US3581767A - Coupling means for connecting molten metal transporting lines - Google Patents

Coupling means for connecting molten metal transporting lines Download PDF

Info

Publication number
US3581767A
US3581767A US3581767DA US3581767A US 3581767 A US3581767 A US 3581767A US 3581767D A US3581767D A US 3581767DA US 3581767 A US3581767 A US 3581767A
Authority
US
United States
Prior art keywords
fitting
pumping
delivery line
metal
bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Gilbert C Jackson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of US3581767A publication Critical patent/US3581767A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/30Accessories for supplying molten metal, e.g. in rations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/02Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00Branching pipes; Joining pipes to walls
    • F16L41/02Branch units, e.g. made in one piece, welded, riveted
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85954Closed circulating system

Definitions

  • the male half of the coupling comprises a stud fitting having a ballshaped head portion and a lengthwise axial bore in communication with the outlet end of the pumping and metering assembly passageway.
  • a female half of the coupling is defined by a bell-shaped fitting having a central lengthwise bore in communication with the inlet end of the delivery line passageway.
  • a lower portion of the bore defines a frustoconical cavity having tapered sidewalls adapted to wedgingly engage the ball-shaped head portion of the stud fitting to provide an essentially liquidtight joint.
  • the invention relates broadly to handling of molten metal. More specifically, the invention is directed to an improved coupling means for transferring molten metal from a pumping and metering assembly to a delivery line in a diecasting apparatus.
  • the molten metal to be diecast is contained in a suitable vessel, such as a crucible or melting pot.
  • a suitable vessel such as a crucible or melting pot.
  • the molten metal is transferred to a diecasting machine through a pumping and metering assembly and a delivery line or transfer pipe coupled to the assembly.
  • Molten metal is drawn into a pump intake chamber which houses the impeller unit of a centrifugal pump.
  • the impeller unit drives the metal through a passageway containing a metering valve.
  • the valve meters a predetermined quantity of the metal, which passes through the coupling and directly into a passageway in the delivery line. From the delivery line the metal is ejected through a nozzle portion at the outlet end of the line and into the shotwell of a diecasting machine.
  • One of the more common diecasting metals is a magnesiumbased alloy which, in a molten state, is readily oxidizable by atmospheric oxygen. It is essential therefore in die-casting magnesium-based metals, to maintain the delivery line substantially completely full of the liquid metal during the casting operation. Any interruption of metal flow into the delivery line will produce open spaces in the metal stream in the delivery line passageway, which cause suction of air into the passageway through the nozzle portion. This resulting in surface oxidation of the metal remaining in the delivery line passageway and creates oxide "slugs" which plug the passageway in a relatively short time.
  • the coupling means which joins the pumping and metering assembly to the delivery line.
  • the male half of the coupling is a fitting having a central bore therethrough and a head portion with generally tapered sidewalls.
  • the male fitting is mounted on the pumping and metering assembly at the outlet end of the metal-conducting passageway in the assembly.
  • the female half of the coupling is a generally bell-shaped fitting having a central frustoconical bore section, the fitting being mounted integral with the inlet end of the metal-conducting passageway in the delivery line.
  • the frustoconical bore section of the female fitting fits over and wedgingly engages the tapered sidewalls of the head portion of the male fitting.
  • the prior coupling means has been generally unsatisfactory with regard to maintaining the passageway in the delivery line full of metal during the casting operation.
  • the delivery line which usually comprises several feet of an insulation-covered pipe, exerts a substantial downward pull at the nozzle or discharge end of the pipe, due to the weight of the line.
  • the downward pull of the line thus has a tendency to tip or cant the female fitting at the inlet end of the line such that the conical bore section of the fitting gets out of alignment with the tapered head portion of the male fitting.
  • the coupling seal is broken and the liquid metal in the delivery line will leak between the coupling fittings and back into the melting pot.
  • a broad object of the invention is a coupling means which provides an essentially liquidtight connection between lines for transporting molten metal.
  • a more specific object is to provide a coupling for joining the pumping and metering assembly to the delivery line in a metal diecasting apparatus which provides a better liquid metal seal" than the prior couplings.
  • Another object is to provide a coupling of the character described which permits more flexibility in adjusting the delivery line ofa diecasting apparatus.
  • Still another object is to provide a coupling as described which permits the delivery line in the diecasting apparatus to be easily and readily disconnected from the pumping and metering assembly to facilitate cleaning of the delivery line.
  • the invention provides an improved coupling means for effecting transfer of molten metal from a pumping and metering assembly to a delivery line.
  • a male half of the coupling defines a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough.
  • the stud fitting is upstandingly affixed to the pumping and metering assembly, such that the lower end ofthe fitting bore is in direct communication with the outlet end of metal conducting passageway in the assembly.
  • the opposite or female half of the coupling defines a generally bell-shaped fitting with a central bore extending generally lengthwise through the fitting.
  • the bore in the female fitting includes a lower bore section adapted to sealingly engage the head portion of the stud fitting.
  • An upper bore section obliquely intersects the lower bore section and is directly joined to the inlet end of a metalconducting passageway in the delivery line.
  • the coupling means of this invention is employed in a metal diecasting apparatus.
  • FIG. 1 is a front elevation view, partly schematic and partly in section, of a conventional diecasting apparatus which includes the coupling means of this invention.
  • FIG. 2 is an enlarged detailed view, mostly in section, of the coupling means illustrated in FIG. I.
  • FIG. 1 there is illustrated a portion of a conventional diecasting apparatus of the type employed in diecasting ofa magnesium-based alloy.
  • the diecasting apparatus 10 includes a crucible or melting pot 12 for containing the molten metal 14 to be die-cast.
  • a pumping and metering assembly as generally designated by numeral 16, provides means for transferring the molten metal 14 from the crucible 12 to a delivery line 18. From delivery line 18 the metal is injected into the shotwell 20 of adiecasting machine (not shown).
  • Pumping and metering assembly 16 comprises basically a centrifugal pump unit 22 and a metering valve unit 24.
  • the lower portion of assembly 16, which is suspended in the metal melt 14, includes a metal-conducting passageway 26.
  • the metal inlet end of passageway 26 is defined by a chamber which houses an impeller unit 2211 of the pump 22.
  • a piston-type metering valve 24a is positioned in passageway 26 downstream from the impeller unit 22a.
  • Valve 24a is operated by a suitable electrical control (not shown) to meter a predetermined amount ofthe metal 14 through passageway 26 into the delivery line 18.
  • the metal 14 is transferred from the pumping and metering assembly 16 into the delivery line 18 through a coupling means 28, which connects the passageway 26 in assembly 16 with a metal-conducting passageway 30 in delivery line 18.
  • Coupling means 28 is more specifically illustrated in the enlarged detail view of HO. 2.
  • the male half of coupling 28 comprises a stud fitting 32 having a ball-shaped head portion 320 and an axial bore 32b, which extends lengthwise through the fitting. Stud fitting 32 is upstandingly affixed to the pumping and metering assembly 16 such that the lower end of bore 32b is directly joined to the outlet end of passageway 26 in assembly 16.
  • An upper or female half of coupling 28 defines a generally bell-shaped fitting 34 with a central bore extending substantially lengthwise through the fitting.
  • the bore in fitting 34 comprises a lower bore section 350 and an upper bore section 36.
  • Lower bore section 35a defines a frustoconical cavity having tapered sidewalls 35c, which are adapted to wedgingly engage the perimeter of'the ball-shaped head portion 32a of stud fitting 32.
  • the lower end of upper bore section 36 communicates with the lower bore section 35a by forming an oblique intersection with a transverse upper wall 35d of the lower bore section.
  • the bore section 36 intersects bore section 351': at an angle of about 45 such that the bore section 36 will extend generally diagonally through the upper part of fitting 34.
  • the metal conducting passageway 30 of delivery line 18 fits into the upper portion of upper bore section 36 and the outer wall of the passageway is secured to the fitting 34 to thereby directly join bore section 36 with the (metal) inlet end of passageway 30.
  • the coupling means 28 provides an excellent connection for the transfer of the molten metal 14 from the pumping and metering assembly 16 to the delivery line 18.
  • the tapered sidewalls 35: of bore section 350 provide a substantially snug wedging-type fit of fitting 34 on the perimeter of the ballshaped head portion 32a of stud fitting 32.
  • the snug fit thus obtained provides a good liquidtight seal" which prevents the molten metal 14 in passageway 30 of delivery line 18 from leaking between the coupling fittings and back into the crucible 12.
  • the coupling 28 is the swiveltype" joint it provides, which permits substantially unlimited flexibility of delivery line 18, as regards either up or down or lateral adjustment of the delivery line.
  • the coupling has another particularly desireable feature which is not found in the prior coupling means. With a swivel-type joint the coupling may be readily disconnected when it is desired to remove plugging solids from the passageway 30 in delivery line 18.
  • coupling 28 includes a holddown means 37 for urging the bellshaped fitting 34 downwardly against stud fitting 32.
  • Holddown means 37 is defined generally by an upstanding bar or rod 37a.
  • the lower end of rod 370 has a recess therein adapted to engage an integral knob member 38 formed at the apex of bell-shaped fitting 34.
  • the upper end of rod 370 is connected to one end of lever 37b, which is pivotally mounted in a yoke member 370 carried on an upper deck plate 40 ofthe diecasting apparatus.
  • lever 37b may be moved upwardly to force fitting 34 downwardly against stud fitting 32 to assure good sealing contact between the fittings.
  • the lever may be moved downwardly to disengage rod 37a from fitting 34 when it is desired to disconnect the coupling 28 for cleaning purprovide a holddown means of the type described.
  • the coupling means of this invention has particular utility in a diecasting apparatus of the type used to cast light metals, such as alloys of magnesium, aluminum or zinc, it is not intended that the invention be limited to this precise concept. It is contemplated, for example, that the present coupling means may be used in any type of system requiring a leakproof, flexible, readily disconnectable coupling to join sections of conduit used to transport liquids from one point to another.
  • a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough, the stud fitting being upstandingly affixed to the pumping and metering assembly such that the lower end of the fitting bore is in direct communication with the outlet end of a metalconducting passageway in said pumping and metering assembly;
  • a generally bell-shaped fitting having a central bore extending substantially lengthwise through the fitting, the bore including a lower bore section adapted to sealingly engage the head portion of the stud fitting and an upper bore section obliquely intersecting the lower bore section and being directly joined to the inlet end of a metal-conducting passageway in said delivery line.
  • a metal die casting apparatus including a pumping and metering assembly for transferring molten metal to a delivery line, an improved means for coupling the pumping and meterthe lower bore section and being directly joined to the ing assembly to the delivery line, the coupling means comprisinlet end of a metal conducting passageway in said ing: delivery line;
  • a stud fitting having a ball-shaped head portion and a holddown means adapted to engage the knob member of lengthwise axial bore extending therethrough, the stud 5 the bell-shaped fitting and to urge said fitting downwardly fitting being upstandingly affixed to the pumping and meagainst the stud fitting to thereby provide sealing contact tering assembly u h that the low d f h f i b between the lower bore section of the bell fitting and the is in direct communication with the outlet end of a metalhead Portion of the d fining conducting passageway in said pumping and m t i 5.
  • the holdm 10 down means is defined by an upstanding rod having a recess in a generally

Abstract

Coupling means particularly useful in a metal diecasting apparatus for connecting the metal-conducting passageway in the pumping and metering assembly to the metal-conducting passageway in the delivery line. The male half of the coupling comprises a stud fitting having a ball-shaped head portion and a lengthwise axial bore in communication with the outlet end of the pumping and metering assembly passageway. A female half of the coupling is defined by a bell-shaped fitting having a central lengthwise bore in communication with the inlet end of the delivery line passageway. A lower portion of the bore defines a frustoconical cavity having tapered sidewalls adapted to wedgingly engage the ball-shaped head portion of the stud fitting to provide an essentially liquidtight joint.

Description

United States Patent [72] lnventor Gilbert C. Jackson Midland, Mich. [2|] App]. No, 838.285 [22] Filed July 1, 1969 [45] Patented June 1, 1971 [73] Assignee The Dow Chemical Company Midland, Mich.
[541 COUPLING MEANS FOR CONNECTING MOLTEN METAL TRANSPORTING LINES 5 Claims, 2 Drawing Figs.
52 us. Cl 137/563, 251/144, 251/319, 222/385 [51] Int. Cl F16k 1/00 [50] Field of Search 137/565,
[56] References Cited UNITED STATES PATENTS 1,484,512 2/1924 Lightfoot 285/9X 2,040,008 5/1936 Kreidel..... 285/261X 2,774,618 12/1956 Alderson 285/261X 3,115,352 12/1963 Heerlein 285/9 3,233,549 2/1966 Howe 285/9X 3.323.651 6/1967 Hauxwell et al. 285/9X FOREIGN PATENTS 922,562 12/1954 Germany 285/261 Primary Examiner-M. Cary Nelson Assistant Examiner-R. B. Rothman Atlorneys-Griswold & Burdick, V. Dean Clausen and William R. Norris ABSTRACT: Coupling means particularly useful in a metal diecasting apparatus for connecting the metal-conducting passageway in the pumping and metering assembly to the metal-conducting passageway in the delivery line. The male half of the coupling comprises a stud fitting having a ballshaped head portion and a lengthwise axial bore in communication with the outlet end of the pumping and metering assembly passageway. A female half of the coupling is defined by a bell-shaped fitting having a central lengthwise bore in communication with the inlet end of the delivery line passageway. A lower portion of the bore defines a frustoconical cavity having tapered sidewalls adapted to wedgingly engage the ball-shaped head portion of the stud fitting to provide an essentially liquidtight joint.
PATENTEBJUH nan 358L767 INVENTOR. 6 /'/b ervC. J0 ckson COUPLING MEANS FOR CONNECTING MOLTEN METAL TRANSPORTING LINES BACKGROUND OF THE INVENTION The invention relates broadly to handling of molten metal. More specifically, the invention is directed to an improved coupling means for transferring molten metal from a pumping and metering assembly to a delivery line in a diecasting apparatus.
In a typical diecasting apparatus the molten metal to be diecast is contained in a suitable vessel, such as a crucible or melting pot. The molten metal is transferred to a diecasting machine through a pumping and metering assembly and a delivery line or transfer pipe coupled to the assembly. Molten metal is drawn into a pump intake chamber which houses the impeller unit of a centrifugal pump. The impeller unit drives the metal through a passageway containing a metering valve. The valve meters a predetermined quantity of the metal, which passes through the coupling and directly into a passageway in the delivery line. From the delivery line the metal is ejected through a nozzle portion at the outlet end of the line and into the shotwell of a diecasting machine.
One of the more common diecasting metals is a magnesiumbased alloy which, in a molten state, is readily oxidizable by atmospheric oxygen. It is essential therefore in die-casting magnesium-based metals, to maintain the delivery line substantially completely full of the liquid metal during the casting operation. Any interruption of metal flow into the delivery line will produce open spaces in the metal stream in the delivery line passageway, which cause suction of air into the passageway through the nozzle portion. This resulting in surface oxidation of the metal remaining in the delivery line passageway and creates oxide "slugs" which plug the passageway in a relatively short time.
In the presently available die-casting apparatus a principal cause of interrupted metal flow in the delivery line is the coupling means which joins the pumping and metering assembly to the delivery line. In a common type of coupling used for this purpose the male half of the coupling is a fitting having a central bore therethrough and a head portion with generally tapered sidewalls. The male fitting is mounted on the pumping and metering assembly at the outlet end of the metal-conducting passageway in the assembly. The female half of the coupling is a generally bell-shaped fitting having a central frustoconical bore section, the fitting being mounted integral with the inlet end of the metal-conducting passageway in the delivery line. In coupling the delivery line to the pumping and metering assembly, the frustoconical bore section of the female fitting fits over and wedgingly engages the tapered sidewalls of the head portion of the male fitting.
The prior coupling means has been generally unsatisfactory with regard to maintaining the passageway in the delivery line full of metal during the casting operation. For example, the delivery line, which usually comprises several feet of an insulation-covered pipe, exerts a substantial downward pull at the nozzle or discharge end of the pipe, due to the weight of the line. The downward pull of the line thus has a tendency to tip or cant the female fitting at the inlet end of the line such that the conical bore section of the fitting gets out of alignment with the tapered head portion of the male fitting. When the female fitting is canted in this manner the coupling seal" is broken and the liquid metal in the delivery line will leak between the coupling fittings and back into the melting pot. The usual procedure, in attempting to prevent the coupling from leaking, is to hammer the female fitting down into the male fitting. Forcing the coupling fittings together in this manner exerts considerable strain on the pumping and metering assembly housing and frequently results in cracking the housing. A further disadvantage of the prior coupling is that it is not flexible enough to permit up and down adjustment ofthe nozzle end of the ,delivery line without breaking the coupling "seal. This is particularly undesirable in that it is frequently necessary to vary the distance of the delivery line nozzle from the shotwell in order to deliver metal into the shotwell under optimum conditions for producing castings.
Other means for coupling the pumping and metering assembly to the delivery line have included use of railroad unions or a coupling similar to that described above, but with a ring-seal fitted into the .bore section of the female fitting. Railroad unions have the general disadvantage of being difficult to disconnect, particularly under the surface of a molten metalbath. Additionally, the unions are not flexible enough to allow for nozzle adjustment of the delivery line. The ring-seal type of coupling has the same general drawbacks as the firstmentioned coupling means described above, since the structure ofboth couplings is essentially the same.
SUMMARY OF THE INVENTION A broad object of the invention is a coupling means which provides an essentially liquidtight connection between lines for transporting molten metal.
A more specific object is to provide a coupling for joining the pumping and metering assembly to the delivery line in a metal diecasting apparatus which provides a better liquid metal seal" than the prior couplings.
Another object is to provide a coupling of the character described which permits more flexibility in adjusting the delivery line ofa diecasting apparatus.
Still another object is to provide a coupling as described which permits the delivery line in the diecasting apparatus to be easily and readily disconnected from the pumping and metering assembly to facilitate cleaning of the delivery line.
Broadly stated, the invention provides an improved coupling means for effecting transfer of molten metal from a pumping and metering assembly to a delivery line. A male half of the coupling defines a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough. I
The stud fitting is upstandingly affixed to the pumping and metering assembly, such that the lower end ofthe fitting bore is in direct communication with the outlet end of metal conducting passageway in the assembly. The opposite or female half of the coupling defines a generally bell-shaped fitting with a central bore extending generally lengthwise through the fitting. The bore in the female fitting includes a lower bore section adapted to sealingly engage the head portion of the stud fitting. An upper bore section obliquely intersects the lower bore section and is directly joined to the inlet end of a metalconducting passageway in the delivery line. In a preferred application the coupling means of this invention is employed in a metal diecasting apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevation view, partly schematic and partly in section, of a conventional diecasting apparatus which includes the coupling means of this invention.
FIG. 2 is an enlarged detailed view, mostly in section, of the coupling means illustrated in FIG. I.
The drawing illustrates only one of numerous embodiments within the scope of the invention, the form shown being selected for convenient illustration and clear demonstration of the principles involved.
DESCRIPTION OF A PREFERRED EMBODIMENT In the drawing, referring particularly to FIG. 1, there is illustrated a portion of a conventional diecasting apparatus of the type employed in diecasting ofa magnesium-based alloy. The diecasting apparatus 10 includes a crucible or melting pot 12 for containing the molten metal 14 to be die-cast. A pumping and metering assembly, as generally designated by numeral 16, provides means for transferring the molten metal 14 from the crucible 12 to a delivery line 18. From delivery line 18 the metal is injected into the shotwell 20 of adiecasting machine (not shown). Pumping and metering assembly 16 comprises basically a centrifugal pump unit 22 and a metering valve unit 24. The lower portion of assembly 16, which is suspended in the metal melt 14, includes a metal-conducting passageway 26. The metal inlet end of passageway 26 is defined by a chamber which houses an impeller unit 2211 of the pump 22. A piston-type metering valve 24a is positioned in passageway 26 downstream from the impeller unit 22a. Valve 24a is operated by a suitable electrical control (not shown) to meter a predetermined amount ofthe metal 14 through passageway 26 into the delivery line 18. As indicated by the flow direction arrows in FIGS. 1 and 2, the metal 14 is transferred from the pumping and metering assembly 16 into the delivery line 18 through a coupling means 28, which connects the passageway 26 in assembly 16 with a metal-conducting passageway 30 in delivery line 18.
Coupling means 28 is more specifically illustrated in the enlarged detail view of HO. 2. As shown in H0. 2, the male half of coupling 28 comprises a stud fitting 32 having a ball-shaped head portion 320 and an axial bore 32b, which extends lengthwise through the fitting. Stud fitting 32 is upstandingly affixed to the pumping and metering assembly 16 such that the lower end of bore 32b is directly joined to the outlet end of passageway 26 in assembly 16. An upper or female half of coupling 28 defines a generally bell-shaped fitting 34 with a central bore extending substantially lengthwise through the fitting. The bore in fitting 34 comprises a lower bore section 350 and an upper bore section 36. Lower bore section 35a defines a frustoconical cavity having tapered sidewalls 35c, which are adapted to wedgingly engage the perimeter of'the ball-shaped head portion 32a of stud fitting 32. The lower end of upper bore section 36 communicates with the lower bore section 35a by forming an oblique intersection with a transverse upper wall 35d of the lower bore section. Preferably, the bore section 36 intersects bore section 351': at an angle of about 45 such that the bore section 36 will extend generally diagonally through the upper part of fitting 34. The metal conducting passageway 30 of delivery line 18 fits into the upper portion of upper bore section 36 and the outer wall of the passageway is secured to the fitting 34 to thereby directly join bore section 36 with the (metal) inlet end of passageway 30.
As will be apparent from the foregoing description and the accompanying drawing, the coupling means 28 provides an excellent connection for the transfer of the molten metal 14 from the pumping and metering assembly 16 to the delivery line 18. Referring to FIG. 2, it will be seen that the tapered sidewalls 35: of bore section 350 provide a substantially snug wedging-type fit of fitting 34 on the perimeter of the ballshaped head portion 32a of stud fitting 32. The snug fit thus obtained provides a good liquidtight seal" which prevents the molten metal 14 in passageway 30 of delivery line 18 from leaking between the coupling fittings and back into the crucible 12. Another advantage of the coupling 28 is the swiveltype" joint it provides, which permits substantially unlimited flexibility of delivery line 18, as regards either up or down or lateral adjustment of the delivery line. The coupling has another particularly desireable feature which is not found in the prior coupling means. With a swivel-type joint the coupling may be readily disconnected when it is desired to remove plugging solids from the passageway 30 in delivery line 18.
ln the preferred embodiment illustrated in FIGS. 1 and 2, coupling 28 includes a holddown means 37 for urging the bellshaped fitting 34 downwardly against stud fitting 32. Holddown means 37 is defined generally by an upstanding bar or rod 37a. The lower end of rod 370 has a recess therein adapted to engage an integral knob member 38 formed at the apex of bell-shaped fitting 34. The upper end of rod 370 is connected to one end of lever 37b, which is pivotally mounted in a yoke member 370 carried on an upper deck plate 40 ofthe diecasting apparatus. As will be apparent from the drawing, lever 37b may be moved upwardly to force fitting 34 downwardly against stud fitting 32 to assure good sealing contact between the fittings. Conversely, the lever may be moved downwardly to disengage rod 37a from fitting 34 when it is desired to disconnect the coupling 28 for cleaning purprovide a holddown means of the type described.
In a typical operation of the diecasting apparatus 10, a
general procedure for casting of the molten metal 14 in crucible 12 is as follows. A series of "test" shots are made to completely fill the passageway 26 in pumping and metering assembly 16 and passageway 30 in delivery line 18. Once the passageways are full ofmetal, electrical controls are employed to set the pump 22 on idle speed and to open the metering valve 24a. The speed of pump 22 is then increased to the point where the impeller 22a is continuously withdrawing metal from the crucible and filling the passageway 26 in the assembly l6 and passageway 30 in delivery line 18. After a preset period, valve 24a automatically closes to meter a given amount of metal into the delivery line 18 through passageway 26 and coupling 28. From delivery line 18 the premeasured amount of metal is injected into a die-assembly (not shown) to make the casting. Timer controls operating in conjunction with pump 22 and metering valve 24 open and close the die assembly according to an established sequence.
The importance of having a good liquidtight connection between the pumping and meter in assembly 16 in delivery line 18, as provided by the coupling 28, is readily apparent. For example, once metering value 2411 closes off passageway 26 during the metering sequence, the only way to hold the desired level of metal in delivery line 18, is to have a connection between passageways 26 and 30 which will not permit the metal to drain back into the crucible.
Although the coupling means of this invention has particular utility in a diecasting apparatus of the type used to cast light metals, such as alloys of magnesium, aluminum or zinc, it is not intended that the invention be limited to this precise concept. It is contemplated, for example, that the present coupling means may be used in any type of system requiring a leakproof, flexible, readily disconnectable coupling to join sections of conduit used to transport liquids from one point to another.
Iclaim:
1. In a pumping and metering assembly for transferring molten metal to a delivery line, an improved means for coupling the pumping and metering assembly to the delivery line, the coupling means comprising:
a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough, the stud fitting being upstandingly affixed to the pumping and metering assembly such that the lower end of the fitting bore is in direct communication with the outlet end of a metalconducting passageway in said pumping and metering assembly;
a generally bell-shaped fitting having a central bore extending substantially lengthwise through the fitting, the bore including a lower bore section adapted to sealingly engage the head portion of the stud fitting and an upper bore section obliquely intersecting the lower bore section and being directly joined to the inlet end of a metal-conducting passageway in said delivery line.
2. The coupling means of claim 1 wherein the lower bore section of the bell fitting defines a frustoconical cavity having tapered sidewalls adapted to wedgingly engage the perimeter of the ball-shaped head portion ofthe stud fitting.
3. The coupling means of claim 1 wherein the upper bore section defines a cylindrical cavity, the lower end ofwhich intersects with an upper transverse wall of the lower bore section at an angle of about 45.
4. In a metal die casting apparatus including a pumping and metering assembly for transferring molten metal to a delivery line, an improved means for coupling the pumping and meterthe lower bore section and being directly joined to the ing assembly to the delivery line, the coupling means comprisinlet end of a metal conducting passageway in said ing: delivery line;
a stud fitting having a ball-shaped head portion and a holddown means adapted to engage the knob member of lengthwise axial bore extending therethrough, the stud 5 the bell-shaped fitting and to urge said fitting downwardly fitting being upstandingly affixed to the pumping and meagainst the stud fitting to thereby provide sealing contact tering assembly u h that the low d f h f i b between the lower bore section of the bell fitting and the is in direct communication with the outlet end of a metalhead Portion of the d fining conducting passageway in said pumping and m t i 5. The die-casting apparatus of claim 4 in which the holdm 10 down means is defined by an upstanding rod having a recess in a generally |l h fini having an integral knob the lower end thereof adapted to engage the knob member of member at the apex of the fitting, the fitting including a the fittingfmd the PP end of h being adapted for central bore extending Substantially lengthwise through engagement with a lever member carried on the diecasting apthe fining, the bore including a lower bore Section paratus and adapted for effecting up and down movement of adapted to sealingly engage the head portion of the stud the fitting and an upper bore section obliquely intersecting

Claims (5)

1. In a pumping and metering assembly for transferring molten metal to a delivery line, an improved means for coupling the pumping and metering assembly to the delivery line, the coupling means comprising: a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough, the stud fitting being upstandingly affixed to the pumping and metering assembly such that the lower end of the fitting bore is in direct communication with the outlet end of a metal-conducting passageway in said pumping and metering assembly; a generally bell-shaped fitting having a central bore extending substantially lengthwise through the fitting, the bore including a lower bore section adapted to sealingly engage the head portion of the stud fitting and an upper bore section obliquely intersecting the lower bore section and being directly joined to the inlet end of a metal-conducting passageway in said delivery line.
2. The coupling means of claim 1 wherein the lower bore section of the bell fitting defines a frustoconical cavity having tapered sidewalls adapted to wedgingly engage the perimeter of the ball-shaped head portion of the stud fitting.
3. The coupling means of claim 1 wherein the upper bore section defines a cylindrical cavity, the lower end of which intersects with an upper transverse wall of the lower bore section at an angle of about 45*.
4. In a metal die casting apparatus including a pumping and metering assembly for transferring molten metal to a delivery line, an improved means for coupling the pumping and metering assembly to the delivery line, the coupling means comprising: a stud fitting having a ball-shaped head portion and a lengthwise axial bore extending therethrough, the stud fitting being upstandingly affixed to the pumping and metering assembly such that the lower end of the fitting bore is in direct communication with the outlet end of a metal-conducting passageway in said pumping and metering assembly; a generally bell-shaped fitting having an integral knob member at the apex of the fitting, the fitting including a central bore extending substantially lengthwise through the fitting, the bore including a lower bore section adapted to sealingly engage the head portion of the stud fitting and an upper bore section obliquely intersecting the lower bore section and being directly joined to the inlet end of a metal conducting passageway in said delivery line; holddown means adapted to engage the knob member of the bell-shaped fitting and to urge said fitting downwardly against the stud fitting to thereby provide sealing contact between the lower bore section of the bell fitting and the head portion of the stud fitting.
5. The die-casting apparatus of claim 4 in which the holddown means is defined by an upstanding rod having a recess in the lower end thereof adapted to engage the knob member of the bell fitting and the upper end of the rod being adapted for engagement with a lever member carried on the diecasting apparatus and adapted for effecting up and down movement of the rod.
US3581767D 1969-07-01 1969-07-01 Coupling means for connecting molten metal transporting lines Expired - Lifetime US3581767A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83828569A 1969-07-01 1969-07-01

Publications (1)

Publication Number Publication Date
US3581767A true US3581767A (en) 1971-06-01

Family

ID=25276731

Family Applications (1)

Application Number Title Priority Date Filing Date
US3581767D Expired - Lifetime US3581767A (en) 1969-07-01 1969-07-01 Coupling means for connecting molten metal transporting lines

Country Status (7)

Country Link
US (1) US3581767A (en)
JP (1) JPS4938968B1 (en)
CA (1) CA923272A (en)
DE (1) DE2032600A1 (en)
FR (1) FR2050411B1 (en)
GB (1) GB1314201A (en)
NL (1) NL7009345A (en)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724435A (en) * 1970-01-29 1973-04-03 Holley Carburetor Co Remote metering system
US4301094A (en) * 1978-08-24 1981-11-17 Baus Heinz Georg Evaporation air humidifier
US5082045A (en) * 1989-02-01 1992-01-21 Fry's Metals Ltd. Casting apparatus and method
US6358468B1 (en) * 1998-12-21 2002-03-19 Vanderjagt Adrian D. Apparatus and method for metering molten metal
US20130299525A1 (en) * 2007-06-21 2013-11-14 Molten Metal Equipment Innnovations, Inc. Molten metal transfer vessel and method of construction
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US9017597B2 (en) 2007-06-21 2015-04-28 Paul V. Cooper Transferring molten metal using non-gravity assist launder
US9034244B2 (en) 2002-07-12 2015-05-19 Paul V. Cooper Gas-transfer foot
US9080577B2 (en) 2009-08-07 2015-07-14 Paul V. Cooper Shaft and post tensioning device
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9382599B2 (en) 2009-08-07 2016-07-05 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
CN107000047A (en) * 2014-09-26 2017-08-01 派瑞泰克有限公司 Mold pump
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US10947980B2 (en) 2015-02-02 2021-03-16 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
US11149747B2 (en) 2017-11-17 2021-10-19 Molten Metal Equipment Innovations, Llc Tensioned support post and other molten metal devices
US11358217B2 (en) 2019-05-17 2022-06-14 Molten Metal Equipment Innovations, Llc Method for melting solid metal
US11873845B2 (en) 2021-05-28 2024-01-16 Molten Metal Equipment Innovations, Llc Molten metal transfer device
US11931802B2 (en) 2020-05-18 2024-03-19 Molten Metal Equipment Innovations, Llc Molten metal controlled flow launder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3012047C2 (en) * 1980-03-28 1983-01-05 Norsk Hydro Magnesiumgesellschaft mbH, 4300 Essen Dosing device for conveying liquid metal
US5125450A (en) * 1990-05-07 1992-06-30 Electrovert Ltd. Method of and system for controlling flow of molten liquid to cast metal alloys
JP2010156267A (en) * 2008-12-26 2010-07-15 Sanken Sangyo Co Ltd Transfer apparatus for nonferrous-metal melt

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484512A (en) * 1922-11-11 1924-02-19 Lee L Lightfoot Device for cleaning sinks
US2040008A (en) * 1934-09-27 1936-05-05 Kreidel Hans Coupling-head
DE922562C (en) * 1952-05-01 1955-02-07 Ringfeder Gmbh Detachable, weldless and solderless pipe connection
US2774618A (en) * 1954-09-13 1956-12-18 Winston T Alderson Combination ball and slip joint for pipes
US3115352A (en) * 1960-07-20 1963-12-24 Gen Electric Alignment compensating coupling
US3233549A (en) * 1963-04-22 1966-02-08 Lyle F Howe Straining, collecting and pumping system
US3323651A (en) * 1962-06-26 1967-06-06 Ransomes Sims & Jefferies Ltd Liquid reservoir tanks, suitably, for vehicles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484512A (en) * 1922-11-11 1924-02-19 Lee L Lightfoot Device for cleaning sinks
US2040008A (en) * 1934-09-27 1936-05-05 Kreidel Hans Coupling-head
DE922562C (en) * 1952-05-01 1955-02-07 Ringfeder Gmbh Detachable, weldless and solderless pipe connection
US2774618A (en) * 1954-09-13 1956-12-18 Winston T Alderson Combination ball and slip joint for pipes
US3115352A (en) * 1960-07-20 1963-12-24 Gen Electric Alignment compensating coupling
US3323651A (en) * 1962-06-26 1967-06-06 Ransomes Sims & Jefferies Ltd Liquid reservoir tanks, suitably, for vehicles
US3233549A (en) * 1963-04-22 1966-02-08 Lyle F Howe Straining, collecting and pumping system

Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3724435A (en) * 1970-01-29 1973-04-03 Holley Carburetor Co Remote metering system
US4301094A (en) * 1978-08-24 1981-11-17 Baus Heinz Georg Evaporation air humidifier
US5082045A (en) * 1989-02-01 1992-01-21 Fry's Metals Ltd. Casting apparatus and method
US6358468B1 (en) * 1998-12-21 2002-03-19 Vanderjagt Adrian D. Apparatus and method for metering molten metal
US9034244B2 (en) 2002-07-12 2015-05-19 Paul V. Cooper Gas-transfer foot
US9435343B2 (en) 2002-07-12 2016-09-06 Molten Meal Equipment Innovations, LLC Gas-transfer foot
US9409232B2 (en) * 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US10458708B2 (en) 2007-06-21 2019-10-29 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US11185916B2 (en) 2007-06-21 2021-11-30 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel with pump
US11167345B2 (en) 2007-06-21 2021-11-09 Molten Metal Equipment Innovations, Llc Transfer system with dual-flow rotor
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US11130173B2 (en) 2007-06-21 2021-09-28 Molten Metal Equipment Innovations, LLC. Transfer vessel with dividing wall
US9383140B2 (en) 2007-06-21 2016-07-05 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US11103920B2 (en) 2007-06-21 2021-08-31 Molten Metal Equipment Innovations, Llc Transfer structure with molten metal pump support
US11020798B2 (en) 2007-06-21 2021-06-01 Molten Metal Equipment Innovations, Llc Method of transferring molten metal
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US10562097B2 (en) 2007-06-21 2020-02-18 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US11759854B2 (en) 2007-06-21 2023-09-19 Molten Metal Equipment Innovations, Llc Molten metal transfer structure and method
US9017597B2 (en) 2007-06-21 2015-04-28 Paul V. Cooper Transferring molten metal using non-gravity assist launder
US20130299525A1 (en) * 2007-06-21 2013-11-14 Molten Metal Equipment Innnovations, Inc. Molten metal transfer vessel and method of construction
US10352620B2 (en) 2007-06-21 2019-07-16 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US10345045B2 (en) 2007-06-21 2019-07-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9566645B2 (en) 2007-06-21 2017-02-14 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9581388B2 (en) 2007-06-21 2017-02-28 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US10274256B2 (en) 2007-06-21 2019-04-30 Molten Metal Equipment Innovations, Llc Vessel transfer systems and devices
US10195664B2 (en) 2007-06-21 2019-02-05 Molten Metal Equipment Innovations, Llc Multi-stage impeller for molten metal
US10072891B2 (en) 2007-06-21 2018-09-11 Molten Metal Equipment Innovations, Llc Transferring molten metal using non-gravity assist launder
US9982945B2 (en) 2007-06-21 2018-05-29 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9855600B2 (en) 2007-06-21 2018-01-02 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9862026B2 (en) 2007-06-21 2018-01-09 Molten Metal Equipment Innovations, Llc Method of forming transfer well
US9925587B2 (en) 2007-06-21 2018-03-27 Molten Metal Equipment Innovations, Llc Method of transferring molten metal from a vessel
US9470239B2 (en) 2009-08-07 2016-10-18 Molten Metal Equipment Innovations, Llc Threaded tensioning device
US9506129B2 (en) 2009-08-07 2016-11-29 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US9080577B2 (en) 2009-08-07 2015-07-14 Paul V. Cooper Shaft and post tensioning device
US9377028B2 (en) 2009-08-07 2016-06-28 Molten Metal Equipment Innovations, Llc Tensioning device extending beyond component
US9382599B2 (en) 2009-08-07 2016-07-05 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US10570745B2 (en) 2009-08-07 2020-02-25 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US9422942B2 (en) 2009-08-07 2016-08-23 Molten Metal Equipment Innovations, Llc Tension device with internal passage
US9464636B2 (en) 2009-08-07 2016-10-11 Molten Metal Equipment Innovations, Llc Tension device graphite component used in molten metal
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US10309725B2 (en) 2009-09-09 2019-06-04 Molten Metal Equipment Innovations, Llc Immersion heater for molten metal
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9482469B2 (en) 2010-05-12 2016-11-01 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US10641279B2 (en) 2013-03-13 2020-05-05 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened tip
US11391293B2 (en) 2013-03-13 2022-07-19 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10126058B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Molten metal transferring vessel
US9587883B2 (en) 2013-03-14 2017-03-07 Molten Metal Equipment Innovations, Llc Ladle with transfer conduit
US10126059B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Controlled molten metal flow from transfer vessel
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US10302361B2 (en) 2013-03-14 2019-05-28 Molten Metal Equipment Innovations, Llc Transfer vessel for molten metal pumping device
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10307821B2 (en) 2013-03-15 2019-06-04 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10322451B2 (en) 2013-03-15 2019-06-18 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US11286939B2 (en) 2014-07-02 2022-03-29 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
CN107000047A (en) * 2014-09-26 2017-08-01 派瑞泰克有限公司 Mold pump
US20170246681A1 (en) * 2014-09-26 2017-08-31 Pyrotek, Inc. Mold pump
US10947980B2 (en) 2015-02-02 2021-03-16 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
US10641270B2 (en) 2016-01-13 2020-05-05 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US11519414B2 (en) 2016-01-13 2022-12-06 Molten Metal Equipment Innovations, Llc Tensioned rotor shaft for molten metal
US11098719B2 (en) 2016-01-13 2021-08-24 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US11098720B2 (en) 2016-01-13 2021-08-24 Molten Metal Equipment Innovations, Llc Tensioned rotor shaft for molten metal
US11149747B2 (en) 2017-11-17 2021-10-19 Molten Metal Equipment Innovations, Llc Tensioned support post and other molten metal devices
US11759853B2 (en) 2019-05-17 2023-09-19 Molten Metal Equipment Innovations, Llc Melting metal on a raised surface
US11471938B2 (en) 2019-05-17 2022-10-18 Molten Metal Equipment Innovations, Llc Smart molten metal pump
US11358216B2 (en) 2019-05-17 2022-06-14 Molten Metal Equipment Innovations, Llc System for melting solid metal
US11358217B2 (en) 2019-05-17 2022-06-14 Molten Metal Equipment Innovations, Llc Method for melting solid metal
US11850657B2 (en) 2019-05-17 2023-12-26 Molten Metal Equipment Innovations, Llc System for melting solid metal
US11858036B2 (en) 2019-05-17 2024-01-02 Molten Metal Equipment Innovations, Llc System and method to feed mold with molten metal
US11858037B2 (en) 2019-05-17 2024-01-02 Molten Metal Equipment Innovations, Llc Smart molten metal pump
US11931802B2 (en) 2020-05-18 2024-03-19 Molten Metal Equipment Innovations, Llc Molten metal controlled flow launder
US11933324B2 (en) 2021-03-13 2024-03-19 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
US11873845B2 (en) 2021-05-28 2024-01-16 Molten Metal Equipment Innovations, Llc Molten metal transfer device
US11931803B2 (en) 2023-02-27 2024-03-19 Molten Metal Equipment Innovations, Llc Molten metal transfer system and method

Also Published As

Publication number Publication date
FR2050411A1 (en) 1971-04-02
NL7009345A (en) 1971-01-05
DE2032600A1 (en) 1971-02-11
FR2050411B1 (en) 1975-02-21
JPS4938968B1 (en) 1974-10-22
GB1314201A (en) 1973-04-18
CA923272A (en) 1973-03-27

Similar Documents

Publication Publication Date Title
US3581767A (en) Coupling means for connecting molten metal transporting lines
US10322451B2 (en) Transfer pump launder system
EP0925132B1 (en) Submerged nozzle for the continuous casting of thin slabs
JPS63144846A (en) Continuous casting method and device
CA1147254A (en) Chemical feed system
CA1066743A (en) Plural fluids delivery system
CN103817303A (en) Pouring protecting device and pouring protecting control method for continuously cast ladle
US4671433A (en) Continuous casting nozzle
US1282963A (en) Metal-casting apparatus.
CN215691265U (en) Pressure type proportional mixing device
JP2014188589A (en) Automatic molten metal feeder of die casting machine
JP3357974B2 (en) Method and apparatus for feeding molten metal
CN111893243B (en) Automatic argon blowing butt joint device for steel ladle, argon butt joint method for steel ladle and argon blowing method for steel ladle
CN210587156U (en) Robot steel ladle pouring long nozzle with argon sealing device
JPS63502601A (en) Injection of substances into hot liquids
CN209716416U (en) Lead device is put in a kind of heat preservation of lead pig moulding machine
CN201425027Y (en) Vacuum water diversion tank for automatic water replenishing
CN218744747U (en) Crystallizer export aerial fog cooling device
CN211872112U (en) Prevent that electrolyte from inhaling aluminum pipe
CN215237667U (en) Porous position gas-liquid mixture whitewashing device
CN214168021U (en) Improved structure of top of oxygen lance
CN214349463U (en) Siphon type automatic atomizing and spraying device for mold
CN217248088U (en) Solution mixing and diluting equipment
JP3847529B2 (en) Beverage supply equipment
CN220503113U (en) Water circulation temperature control device capable of rapidly reducing temperature