CA1270722A - Loop injection circulation system - Google Patents
Loop injection circulation systemInfo
- Publication number
- CA1270722A CA1270722A CA000521839A CA521839A CA1270722A CA 1270722 A CA1270722 A CA 1270722A CA 000521839 A CA000521839 A CA 000521839A CA 521839 A CA521839 A CA 521839A CA 1270722 A CA1270722 A CA 1270722A
- Authority
- CA
- Canada
- Prior art keywords
- loop
- circulating
- pump
- injection
- outlet
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0406—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with several pumps
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85954—Closed circulating system
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85978—With pump
- Y10T137/86131—Plural
- Y10T137/86139—Serial
Abstract
ABSTRACT
A circulating system for dispensing fluid, such as paint, is provided with a circulating loop having a first pump. There is no substantial restriction in the circulating loop and a second pump injects additional fluid into the loop as needed to maintain pressure and make up for fluid which is dispensed by drops off of the circulating loop. Valving may be provided such that, either of the two pumps may function by itself in the event of a failure of one of the pumps.
A circulating system for dispensing fluid, such as paint, is provided with a circulating loop having a first pump. There is no substantial restriction in the circulating loop and a second pump injects additional fluid into the loop as needed to maintain pressure and make up for fluid which is dispensed by drops off of the circulating loop. Valving may be provided such that, either of the two pumps may function by itself in the event of a failure of one of the pumps.
Description
~2'~ 7~
LOOP INJECTION CIRCULATING SYSTEM
BACKGROUND OF THE INVENTION
Circulating systems for pumping and dispensing fluid, such as paint, are well known and typically consist of a single pump drawing from a fluid source or reservoir. The pump output is connec~ed to a circulating loop supply line having one or more drops off of the output of the pump for supplying spray guns or other dispensing devic~s. After the drops, the fluid is returned to the tank by way of a back-pressure regulator which serves to maintain the desired pressure in the supply line.
SUMMARY OF THE INVENTION
In accordance with one aspect of the invention there is provided a loop injection circulating system comprising: a fluid source; a high pressure circulating loop having at least one drop; a circulaking pump connected in s~ries in said loop, said circulating pump comprising an inlet and an outlet; and an injection pump having an inlet and an outlet, s~id injection pump inlet being connected to said fluid source and said injection pump outlet being connected to said circulating loop.
In the instant invention, a circulating loop pump is provided and is of a type which loads and discharges at the same rate. The loop circulating pump feeds a circulating loop which has one or more drops off .
:
, ::".,' .
:.: . . ..
of the loop for supplying fluid to a spray gun or other fluid-dispensing device. The circulating loop is constructed in such a manner that there is no back-pressure regulator or other - la -.,j ~,...
- . , , . .
.. ..
. ~ ~
JLI~ ~ 1. ~ P~rl-~ul fluid restricting device so that flow around the loop may be free and at substan-tially the same pressure all around.
A fluid injection pump is provided and has i~s inlet plumbed to a source or reservoir of supply fluid and its outlet attached to the circulating loop downstream from the circulating pump outlet and upstream from the spray gun drops. In such a system, the injection pump operates only as much as is necessary to replace fluid into the circu-lating loop which is used by the spray gun drops.
The energy saving with such an arrangement are quite substantial and can be as great as 60~. Because the back-pressure regulator is eliminated, the energy put into the fluid by the circulating pump is not wasted, but rather is retained in the circulating loop. Normally, in a conventional system, that energy would be lost through the back~pressure regulator.
In addition, the back-pressure regulator has recently been found to be a substantial source o~ paint degradation, particularly when utilized with metallic paints. The repeated passage of metallic particles through a back-pressure reyulator can cause those particles to become damaged, thereby resulting in a color change~
: :' . , :
. : : .:. .: ~-:.. , .:
.. . . . .
. . .
, 7~.3~ JV~
When operating with both pumps in actionl the cycle rate on each of those pumps is substantially reduced from that which either pump would operate at singly. This arrangement results in substantially increased pump life for each pump over lts single-pump configuration life~
Further, with the addition of a few extra lines and simple valves, the system can be arranged so that, if either of the pumps were to fail, the other could serve a back-up function and the system could operate as a conven tional one-pump system, rather than have the system go down.
These and other objects and advantages of the invention will appear more fully from the following des cription made in conjunction with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several views.
A BRIEE~ DESCRIPTION OF THE DRAWINGS
Figure l is a schematic view showing a prior art circulating system.
Figure 2 is a schematic view showing the loop circulating system o the instant invention.
Figure 3 is a schematic view o the instant invention showing additional plumbing necessary to provide a back-up pump capability.
.0 .
, ' ~
. ~
~2~
DESCRIPTION OF TH~ PREFERRED EMBODIMENT
Figure 1 displays a typical prior art circulating system, generally designated 10. The prior art system 10 consists generally of a reservoir or fluid source 12 which feeds a pump 14 having an inlet 16 and an outlet 18. Outlet 18 is connected to a supply line 20 which feeds a number of spray guns 22 or other fluid-dispensing devices by way of drops 24. A low pressure return line 26 may be included if the guns are of the type which circulate fluid through the gun even when the gun is not being used. A high pressure return line 28 leads from drops 24 to a back pressure regulator 30 which serves to maintain pressure in the system. In turn, a line 32 connects bac~ pressure regulator 30 with reservoir 12~ In such a system, energy is put into the fluid by pump 14 and that energy is then, in effect, lost as it passes through back pressure regulator 30 and into reservoir 12.
The loop injection circulating system 110 of the instant invention is shown generally and schematically in Figure 2. A reservoir 112 has leading out of it an intake line 134 which is attached to a check valve 136, which allows flow only in the direction as shown by the arrows in Figure 2. Check valve 136 is connected to a tee 138, which has one of its outlets connected to the intake 116 of injection pump 114. The outlet 118 of injection 114 is ., :: . :
. . . :
: , ~ ', . ' , ':: ' .
connected to a tee 140 in the circulating loop. Supply line 120 of the circulating loop is connected to tee 140 and provides fluid travel.ing in the direction shown by the arrows to drops 124, which service guns 1~2. Again, other fluid dispensing devices may be utilized depending on the system.
Similarly, a low pressure return line 126 takes fluid from guns 122 and returns them to previously mentioned tee 138. If desired, low pressure return line 126 may run directly to reservoir 112~ If the plumbing is set up this way, check valve 136 and tee 138 may be deleted. A return line 128 leads from drops 124 to the inlet 144 of loop circulating pump 142. The outlet 146 of loop circulating pump 142 is connected to previously mentioned circulating tee 140. When there is no draw on the systemJ that is, when guns 122 are not being operated, injection pump 114 is essentially inactive and circulatiny pump 142 need work only very lightly to maintain pressure and circulation in the circulating loop. In a similar situation, the prior art system Figure 1 would require pump 14 to continue to work against back pressure regulator 30 and expend a substantially greater amount of energy than the system of the instant invention shown in the ~igure 2.
Turning to Figure 3, the back-up system 210 shown therein utilizes the invention as shown .in Figure 2 with ., .
'" ~ '' :' ' ' extra plumbing so as to provide a back-up capabil:ity should either of the pumps fail.
~ ~luid reservoir 212 feeds an intake line 234 of check valve 236 which is, in -turn, connected to a tee 238.
The outlet o~ tee 238 is connected to the inlet 216 of injection pump 214. The outlet 218 of pump 214 is, in turn, connected to tee 240 which has at one outlet thereof a connection to supply line 220. Again, drops 224 are attached and connect ~o spray guns 222 which are, in turn, provided wi~h a low pressure return line 226. Low pressure return line 226 is, in turn, connected to -tee 238. Again, low pressure return line 226 may be directed to reservoir 212, thereby allowing the deletion of check valve 236 and tee 238. High pressure return line 228 from drops 224 is connected to tee 248 which has at one of its outlets a return line 250 having a valve 252 therein.
Return .line 250 is connected to back pressure regulator 230 and a dump line 232. An i.ntermediate line 256 connects tees 248 and 254 and has a valve 258 therein. Tee 254 has an auxiliary intake line 260 attached thereto which, in turn, has a valve 262 located therein. Tee 254 is, .in turn, connected to intake 244 of loop circulating pump 242.
The outlet 246 of circulating pump 242 is, in turn, connected to tee 240.
: ; :
In practice, first valve 262, second valve 258 arld third valve 252 are all simple on~off type valves. In normal operation of the system as described heretofore with reference to Figure 2, first and third valves 262 and 252, respectively, are closed and second valve 258 opened.
Should in~ection pump 214 fail, first valve 262 would be opened, second valve 258 closed and third valve 252 opened to provid~ a back-up system which operates similar to the prior art system shown in Figure 1. Flow in those lines having flow will be as shown by the arrows in Figure 3.
Similarly, should circulating pump 242 fail, first and second valves 262 and 258, respectively, are closed and third valve 252 opened to, againr provide a back-up system which operates like the prior art system of Figure 1.
It is contemplated that various changes and modifications may be made to the loop injection circulating system without departing from the spirit and scope of the invention as defined by the followiny claims.
: "
,; .,- :' ,: :
. , .. .
'': ; ~
. . ..
,, ~
LOOP INJECTION CIRCULATING SYSTEM
BACKGROUND OF THE INVENTION
Circulating systems for pumping and dispensing fluid, such as paint, are well known and typically consist of a single pump drawing from a fluid source or reservoir. The pump output is connec~ed to a circulating loop supply line having one or more drops off of the output of the pump for supplying spray guns or other dispensing devic~s. After the drops, the fluid is returned to the tank by way of a back-pressure regulator which serves to maintain the desired pressure in the supply line.
SUMMARY OF THE INVENTION
In accordance with one aspect of the invention there is provided a loop injection circulating system comprising: a fluid source; a high pressure circulating loop having at least one drop; a circulaking pump connected in s~ries in said loop, said circulating pump comprising an inlet and an outlet; and an injection pump having an inlet and an outlet, s~id injection pump inlet being connected to said fluid source and said injection pump outlet being connected to said circulating loop.
In the instant invention, a circulating loop pump is provided and is of a type which loads and discharges at the same rate. The loop circulating pump feeds a circulating loop which has one or more drops off .
:
, ::".,' .
:.: . . ..
of the loop for supplying fluid to a spray gun or other fluid-dispensing device. The circulating loop is constructed in such a manner that there is no back-pressure regulator or other - la -.,j ~,...
- . , , . .
.. ..
. ~ ~
JLI~ ~ 1. ~ P~rl-~ul fluid restricting device so that flow around the loop may be free and at substan-tially the same pressure all around.
A fluid injection pump is provided and has i~s inlet plumbed to a source or reservoir of supply fluid and its outlet attached to the circulating loop downstream from the circulating pump outlet and upstream from the spray gun drops. In such a system, the injection pump operates only as much as is necessary to replace fluid into the circu-lating loop which is used by the spray gun drops.
The energy saving with such an arrangement are quite substantial and can be as great as 60~. Because the back-pressure regulator is eliminated, the energy put into the fluid by the circulating pump is not wasted, but rather is retained in the circulating loop. Normally, in a conventional system, that energy would be lost through the back~pressure regulator.
In addition, the back-pressure regulator has recently been found to be a substantial source o~ paint degradation, particularly when utilized with metallic paints. The repeated passage of metallic particles through a back-pressure reyulator can cause those particles to become damaged, thereby resulting in a color change~
: :' . , :
. : : .:. .: ~-:.. , .:
.. . . . .
. . .
, 7~.3~ JV~
When operating with both pumps in actionl the cycle rate on each of those pumps is substantially reduced from that which either pump would operate at singly. This arrangement results in substantially increased pump life for each pump over lts single-pump configuration life~
Further, with the addition of a few extra lines and simple valves, the system can be arranged so that, if either of the pumps were to fail, the other could serve a back-up function and the system could operate as a conven tional one-pump system, rather than have the system go down.
These and other objects and advantages of the invention will appear more fully from the following des cription made in conjunction with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several views.
A BRIEE~ DESCRIPTION OF THE DRAWINGS
Figure l is a schematic view showing a prior art circulating system.
Figure 2 is a schematic view showing the loop circulating system o the instant invention.
Figure 3 is a schematic view o the instant invention showing additional plumbing necessary to provide a back-up pump capability.
.0 .
, ' ~
. ~
~2~
DESCRIPTION OF TH~ PREFERRED EMBODIMENT
Figure 1 displays a typical prior art circulating system, generally designated 10. The prior art system 10 consists generally of a reservoir or fluid source 12 which feeds a pump 14 having an inlet 16 and an outlet 18. Outlet 18 is connected to a supply line 20 which feeds a number of spray guns 22 or other fluid-dispensing devices by way of drops 24. A low pressure return line 26 may be included if the guns are of the type which circulate fluid through the gun even when the gun is not being used. A high pressure return line 28 leads from drops 24 to a back pressure regulator 30 which serves to maintain pressure in the system. In turn, a line 32 connects bac~ pressure regulator 30 with reservoir 12~ In such a system, energy is put into the fluid by pump 14 and that energy is then, in effect, lost as it passes through back pressure regulator 30 and into reservoir 12.
The loop injection circulating system 110 of the instant invention is shown generally and schematically in Figure 2. A reservoir 112 has leading out of it an intake line 134 which is attached to a check valve 136, which allows flow only in the direction as shown by the arrows in Figure 2. Check valve 136 is connected to a tee 138, which has one of its outlets connected to the intake 116 of injection pump 114. The outlet 118 of injection 114 is ., :: . :
. . . :
: , ~ ', . ' , ':: ' .
connected to a tee 140 in the circulating loop. Supply line 120 of the circulating loop is connected to tee 140 and provides fluid travel.ing in the direction shown by the arrows to drops 124, which service guns 1~2. Again, other fluid dispensing devices may be utilized depending on the system.
Similarly, a low pressure return line 126 takes fluid from guns 122 and returns them to previously mentioned tee 138. If desired, low pressure return line 126 may run directly to reservoir 112~ If the plumbing is set up this way, check valve 136 and tee 138 may be deleted. A return line 128 leads from drops 124 to the inlet 144 of loop circulating pump 142. The outlet 146 of loop circulating pump 142 is connected to previously mentioned circulating tee 140. When there is no draw on the systemJ that is, when guns 122 are not being operated, injection pump 114 is essentially inactive and circulatiny pump 142 need work only very lightly to maintain pressure and circulation in the circulating loop. In a similar situation, the prior art system Figure 1 would require pump 14 to continue to work against back pressure regulator 30 and expend a substantially greater amount of energy than the system of the instant invention shown in the ~igure 2.
Turning to Figure 3, the back-up system 210 shown therein utilizes the invention as shown .in Figure 2 with ., .
'" ~ '' :' ' ' extra plumbing so as to provide a back-up capabil:ity should either of the pumps fail.
~ ~luid reservoir 212 feeds an intake line 234 of check valve 236 which is, in -turn, connected to a tee 238.
The outlet o~ tee 238 is connected to the inlet 216 of injection pump 214. The outlet 218 of pump 214 is, in turn, connected to tee 240 which has at one outlet thereof a connection to supply line 220. Again, drops 224 are attached and connect ~o spray guns 222 which are, in turn, provided wi~h a low pressure return line 226. Low pressure return line 226 is, in turn, connected to -tee 238. Again, low pressure return line 226 may be directed to reservoir 212, thereby allowing the deletion of check valve 236 and tee 238. High pressure return line 228 from drops 224 is connected to tee 248 which has at one of its outlets a return line 250 having a valve 252 therein.
Return .line 250 is connected to back pressure regulator 230 and a dump line 232. An i.ntermediate line 256 connects tees 248 and 254 and has a valve 258 therein. Tee 254 has an auxiliary intake line 260 attached thereto which, in turn, has a valve 262 located therein. Tee 254 is, .in turn, connected to intake 244 of loop circulating pump 242.
The outlet 246 of circulating pump 242 is, in turn, connected to tee 240.
: ; :
In practice, first valve 262, second valve 258 arld third valve 252 are all simple on~off type valves. In normal operation of the system as described heretofore with reference to Figure 2, first and third valves 262 and 252, respectively, are closed and second valve 258 opened.
Should in~ection pump 214 fail, first valve 262 would be opened, second valve 258 closed and third valve 252 opened to provid~ a back-up system which operates similar to the prior art system shown in Figure 1. Flow in those lines having flow will be as shown by the arrows in Figure 3.
Similarly, should circulating pump 242 fail, first and second valves 262 and 258, respectively, are closed and third valve 252 opened to, againr provide a back-up system which operates like the prior art system of Figure 1.
It is contemplated that various changes and modifications may be made to the loop injection circulating system without departing from the spirit and scope of the invention as defined by the followiny claims.
: "
,; .,- :' ,: :
. , .. .
'': ; ~
. . ..
,, ~
Claims (8)
1. A loop injection circulating system comprising:
a fluid source;
a high pressure circulating loop having at least one drop;
a circulating pump connected in series in said loop, said circulating pump comprising an inlet and an outlet; and an injection pump having an inlet and an outlet, said injection pump inlet being connected to said fluid source and said injection pump outlet being connected to said circulating loop.
a fluid source;
a high pressure circulating loop having at least one drop;
a circulating pump connected in series in said loop, said circulating pump comprising an inlet and an outlet; and an injection pump having an inlet and an outlet, said injection pump inlet being connected to said fluid source and said injection pump outlet being connected to said circulating loop.
2. The loop injection circulating system of Claim 1 where said injection pump outlet is connected to said loop between said circulating pump outlet and said drop.
3. The loop injection circulating system of Claim 1 wherein said circulating loop is free of any substantial restriction.
4. The loop injection circulating system of Claim 1 further comprising a low pressure return line from said drop, said return line being connected to said injection pump inlet.
5. The loop injection circulating system of Claim 4 further comprising a check valve between said return line and said source allowing fluid to flow only out of said source.
6. The loop injection circulating system of Claim 1 wherein said circulating pump loads and unloads at equal rates.
7. A loop injection circulating system comprising:
a fluid source;
a high pressure circulating loop having at least one drop;
a circulating pump connected in series in said loop, said circulating pump comprising an inlet and an outlet;
an injection pump having an inlet and an outlet, said injection pump being connected to said circulating loop;
a first valve between said fluid source and said circulating pump inlet;
a second valve between said circulating pump inlet and said drop;
a back pressure regulator leading to said fluid source; and a third valve between said back-pressure regulator and a line connecting said second valve and said drop.
a fluid source;
a high pressure circulating loop having at least one drop;
a circulating pump connected in series in said loop, said circulating pump comprising an inlet and an outlet;
an injection pump having an inlet and an outlet, said injection pump being connected to said circulating loop;
a first valve between said fluid source and said circulating pump inlet;
a second valve between said circulating pump inlet and said drop;
a back pressure regulator leading to said fluid source; and a third valve between said back-pressure regulator and a line connecting said second valve and said drop.
8. The loop injection circulating system of Claim 1 where said injection pump outlet is connected to said loop between said circulating pump outlet and said drop.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/799,330 US4653532A (en) | 1985-11-18 | 1985-11-18 | Loop injection circulation system |
| US799,330 | 1985-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1270722A true CA1270722A (en) | 1990-06-26 |
Family
ID=25175606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000521839A Expired - Fee Related CA1270722A (en) | 1985-11-18 | 1986-10-30 | Loop injection circulation system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4653532A (en) |
| JP (1) | JPS62117652A (en) |
| CA (1) | CA1270722A (en) |
| DE (2) | DE8630759U1 (en) |
| FR (1) | FR2590187B1 (en) |
| GB (1) | GB2182867B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4886086A (en) * | 1987-12-23 | 1989-12-12 | Graco, Inc. | Non-degrading pressure regulator |
| US4917296A (en) * | 1989-03-24 | 1990-04-17 | Nordson Corporation | Spraying apparatus with flow alarm |
| US5253484A (en) * | 1991-08-22 | 1993-10-19 | The Boeing Company | High reliability avionic cooling system |
| US5433587A (en) * | 1993-07-19 | 1995-07-18 | Graco Inc. | Paint circulating method with viscosity indicator and paint agitating means |
| US5425504A (en) * | 1993-11-10 | 1995-06-20 | Patterson; James | Water cannon liquid dispensing system |
| FR2772367B1 (en) * | 1997-12-11 | 2000-03-03 | Georges Ollier | IMPROVEMENTS TO THE PRODUCTION OF MIXTURES ESPECIALLY FOR THE MANUFACTURE OF SOFT DRINKS |
| DE60131849T2 (en) * | 2000-05-17 | 2008-12-18 | Knight, Brian George, South Luffenham, Oakham | sprayer |
| FI20010292A0 (en) * | 2001-02-15 | 2001-02-15 | Raimo Parkkinen Oy | Pressure gas arrangement |
| US20060177565A1 (en) * | 2005-02-07 | 2006-08-10 | Shubho Bhattacharya | Paint circulation system |
| US7828527B2 (en) * | 2005-09-13 | 2010-11-09 | Illinois Tool Works Inc. | Paint circulating system and method |
| GB0518637D0 (en) | 2005-09-13 | 2005-10-19 | Itw Ltd | Back pressure regulator |
| ES2341895T3 (en) * | 2007-03-08 | 2010-06-29 | Special Coating Laboratory International (S.C.L. International) | DEVICE FOR REGULATION OF THE CONCENTRATION OF A PRODUCT IN A LIQUID. |
| CA2652949A1 (en) * | 2009-01-22 | 2010-07-22 | Jan A. Korzeniowski | Water distribution system for cold climates |
| US8333210B1 (en) * | 2011-06-16 | 2012-12-18 | Hamilton Sundstrand Corporation | Leak isolation logic for closed-volume system |
| JP5979732B2 (en) * | 2014-06-11 | 2016-08-31 | 本田技研工業株式会社 | Paint circulation system |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2022481A (en) * | 1931-12-02 | 1935-11-26 | Chicago Telephone Supply Co | Circulating and mixing system |
| GB436192A (en) * | 1935-04-13 | 1935-10-07 | Frederic Ernest Webb | Improvements in or relating to apparatus for feeding paints, enamels and the like tospray guns |
| US2244686A (en) * | 1938-12-24 | 1941-06-10 | Binks Mfg Co | Means for distributing and circulating liquid material |
| US2290350A (en) * | 1939-09-18 | 1942-07-21 | Peabody Engineering Corp | Atomizing system |
| US2599680A (en) * | 1947-08-26 | 1952-06-10 | Curtiss Wright Corp | Liquid distributing system |
| US2638973A (en) * | 1947-12-24 | 1953-05-19 | Dowty Equipment Ltd | Fuel supply system with emergency switching means |
| US2644195A (en) * | 1949-05-14 | 1953-07-07 | Celanese Corp | Method and apparatus for forming films |
| US2659625A (en) * | 1951-07-27 | 1953-11-17 | Gramatky Ferdinand Gunner | Asphalt spreading device |
| US3018968A (en) * | 1959-11-17 | 1962-01-30 | Spee Flo Mfg Corp | Closed system recirculating assembly |
| US3233651A (en) * | 1962-05-28 | 1966-02-08 | Holley Carburetor Co | Fluid metering system |
| US3111942A (en) * | 1962-07-06 | 1963-11-26 | Avy L Miller | Hot water distribution system |
| US3429508A (en) * | 1966-08-25 | 1969-02-25 | Gray Co Inc | Fluid selection system |
| US3491949A (en) * | 1967-08-09 | 1970-01-27 | Forrest City Machine Works Inc | Mobile apparatus for batching and applying liquid and particulate fertilizer material or the like |
| US3624759A (en) * | 1970-02-17 | 1971-11-30 | Atomic Energy Commission | Closed fluid system pressurization |
| US4199303A (en) * | 1976-09-29 | 1980-04-22 | Gusmer Corporation | Feeder for apparatus for ejecting a mixture of a plurality of liquids |
| DE2923906C2 (en) * | 1979-06-13 | 1981-01-08 | Basf Farben + Fasern Ag, 2000 Hamburg | Method and device for supplying paint to painting lines |
| DE3007116C2 (en) * | 1980-02-26 | 1986-11-20 | Walter Hofmann, Maschinenfabrik, 2084 Rellingen | Arrangement for pulsation-free delivery of a liquid medium |
| DE3312268A1 (en) * | 1983-04-05 | 1984-10-11 | Hermann Behr & Sohn Gmbh & Co, 7121 Ingersheim | Paint recirculating system for a coating system |
-
1985
- 1985-11-18 US US06/799,330 patent/US4653532A/en not_active Expired - Fee Related
-
1986
- 1986-10-30 CA CA000521839A patent/CA1270722A/en not_active Expired - Fee Related
- 1986-11-13 JP JP61270811A patent/JPS62117652A/en active Granted
- 1986-11-17 GB GB8627437A patent/GB2182867B/en not_active Expired
- 1986-11-17 DE DE19868630759 patent/DE8630759U1/de not_active Expired
- 1986-11-17 DE DE19863639245 patent/DE3639245A1/en active Granted
- 1986-11-17 FR FR8615934A patent/FR2590187B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4653532A (en) | 1987-03-31 |
| FR2590187B1 (en) | 1989-07-28 |
| JPS62117652A (en) | 1987-05-29 |
| GB8627437D0 (en) | 1986-12-17 |
| DE3639245C2 (en) | 1991-10-31 |
| FR2590187A1 (en) | 1987-05-22 |
| GB2182867A (en) | 1987-05-28 |
| DE3639245A1 (en) | 1987-05-21 |
| DE8630759U1 (en) | 1989-08-31 |
| JPH0416220B2 (en) | 1992-03-23 |
| GB2182867B (en) | 1989-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1270722A (en) | Loop injection circulation system | |
| US3720373A (en) | Recirculating paint system or the like | |
| US6109296A (en) | Dribble flow valve | |
| EP0383029A3 (en) | Pressure washer with springless outlet to inlet bypass | |
| CA1059368A (en) | Airless spray apparatus | |
| US6619025B2 (en) | Ecology valve and system in an aircraft engine fuel system | |
| GB1521732A (en) | Hydraulic power systems | |
| EP0874090A4 (en) | Hydraulique drive device | |
| US3628727A (en) | High-pressure spray device | |
| US4712375A (en) | Safety device for priority hydraulic consumer | |
| EP0685644A3 (en) | High pressure pump for fuel injection systems. | |
| US3495544A (en) | Hydraulic system | |
| US5143258A (en) | Pressure relief for vacuum operated valve | |
| GB1132590A (en) | Improvements in or relating to pumps and liquid supply systems incorporating such pumps | |
| US3816030A (en) | Automatic-functioning breather device | |
| EP0273677A3 (en) | Flow controller and a high-pressure liquid system | |
| EP0719235A4 (en) | Liquid dispensing apparatus | |
| FI104846B (en) | Fuel Supply System | |
| RU2037673C1 (en) | Source of the liquid high pressure | |
| US6006782A (en) | Snubber valve | |
| GB1284310A (en) | Improvements relating to fluid pumping systems | |
| US20040123841A1 (en) | Self-regulating switch for split rail gasoline fuel supply system | |
| GB1464369A (en) | Hydraulic systems | |
| JPH0340378Y2 (en) | ||
| KR200185884Y1 (en) | A supplying valve device for high pressure sprayer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |