DE1553148A1 - Runner for screw pumps - Google Patents

Runner for screw pumps

Info

Publication number
DE1553148A1
DE1553148A1 DE19661553148 DE1553148A DE1553148A1 DE 1553148 A1 DE1553148 A1 DE 1553148A1 DE 19661553148 DE19661553148 DE 19661553148 DE 1553148 A DE1553148 A DE 1553148A DE 1553148 A1 DE1553148 A1 DE 1553148A1
Authority
DE
Germany
Prior art keywords
rotor
screw pumps
runner
face diameter
pitch
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.)
Pending
Application number
DE19661553148
Other languages
German (de)
Inventor
Willy John
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.)
Erich Netzsch GmbH and Co Holding KG
Original Assignee
Erich Netzsch GmbH and Co Holding KG
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 Erich Netzsch GmbH and Co Holding KG filed Critical Erich Netzsch GmbH and Co Holding KG
Publication of DE1553148A1 publication Critical patent/DE1553148A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels

Description

."Läufer für Schneckenpumpen" Die Erfindung betrifft einen Läufer für Schneckenpumpen, deren Läufer und Ständer mit Gewinde von unterschiedlicher Gangzahl versehen sind.. "Rotor for worm pumps" The invention relates to a rotor for worm pumps, their rotors and stator with thread of different Number of gears are provided.

Nach dem Hauptpatent (2atentaruneldung N 27 350 10/59e) sind die Steigung und der Stirndurohmesser des Läufers in ein bestimmtes Verhältnis zu einander gebracht, bei dem die größtmöglichste Exzentrizität des Läufers der bestimmende Faktor ist.According to the main patent (2atentarunmeldung N 27 350 10 / 59e) the pitch and the front diameter of the rotor are brought into a certain ratio to each other, in which the greatest possible eccentricity of the rotor is the determining factor.

Die Leistung wird daher nicht mehr durch den Durchmesser des Läufers und seiner Umdrehungszahl bestimmt, sondern durch das Verhältnis seiner größtmöglichsten Exzentrizität zu seinem Stirndurchmesser und zu seiner Steigung.The performance is therefore no longer determined by the diameter of the rotor and its number of revolutions, but rather by the ratio of its greatest possible Eccentricity to its face diameter and its slope.

Die Zusatierfindung ist auf eine Weiterentwicklung und Verbesserung eines solchen Rotors gerichtet, um die Leistung weiter zu erhöhen, Die Lösung dbx Aufgabe wurde durch eine Er- höhung im Verhältnis des Stirndurohmesser des Läufers zur größtmöglichen Exzentrizität auf mindestens das Sechsfache und seiner Steigung auf das Dreifache des Stirndurchmessers gefunden. Die dadurch erzielte Mehrleistung der Pumpe beträgt dabei rund 20 Bei Anwendung der angegebenen Verhältnisse ergeben sich bei gleichen Leistungen wesentliche geringere Läuferdurchmesser, während die Länge sich vergrößert. Es war daher eine Grenze nach oben gesetzt, hinsichtlich der Bearbeitung von Läufer und Ständer.'Gerade bei letzterem war es mit zunehmender Länge und ahnehmender Bohrung immer schwieriger dieselbe einwandfrei herzustellen.The Zusatierfindung is directed to a further development and improvement of such a rotor, the power continues to increase, the solution dbx object has been heightening by ER in the ratio of Stirndurohmesser of the rotor to the maximum eccentricity to at least six times and its gradient on three times the Face diameter found. The increased output of the pump achieved in this way is around 20. Using the specified ratios results in significantly smaller rotor diameters with the same output, while the length increases. There was therefore an upper limit with regard to the machining of the rotor and stator. With the latter in particular, it became more and more difficult to produce the same flawlessly with increasing length and increasing bore.

Auch traten im Betrieb frühzeitige Zerstörungserscheinungen beim Überschreiten einer bestimmten Länge auf. Erst durch das in-letzter Zeit angewandte Einvulkanisieren des Otänders in ein besonderes Stahlrohr wurde seine Festigkeit so versteift, daß diese Schwierigkeiten überwunden werden konnten. Gleichzeitig wurde damit die Erkenntnis gewonnen, daß mit dem der Erfindung zugrunde gelegten Verhältnis eine weitere Leistungssteigerung erzielt werden kann.Early signs of destruction also occurred in operation when exceeded a certain length. Only through the vulcanization that has been used recently of the uterine in a special steel tube, its strength was so stiffened that these difficulties could be overcome. At the same time it became the realization won that with the ratio on which the invention is based, a further increase in performance can be achieved.

In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel dargestellt.In the drawing, the subject matter of the invention is in one embodiment shown.

Es zeigt: Fig. 1 den Läufer in der Längsansicht und Fig. 2 eine Seitenansicht. . It shows: FIG. 1 the rotor in a longitudinal view and FIG. 2 a side view. .

Die Exzentrizität ist mit e bezeichnet, d = der Stirndurchmesser, s = die Steigung und u der von dem Läufer beschxiebene Umfang.The eccentricity is denoted by e, d = the face diameter, s = the pitch and u the circumference described by the rotor.

Claims (2)

Patentansprüche 1 äuf er f ür Schneckenpumpen, deren Läuf er und Ständer mit Gewinde von unterschiedlicher Gangzahl versehen sind (nach 2atent .............. amtl. Aktenzeichen N27350 IC/59e) dadurch gekennzeichnet, daß die größtmöglichste Exzentrizität des Läufers bestimmend für die Größe seines Stirndurchmessexs und für seine Steigung ist. He claims 1 äuf f or screw pumps whose Runners are provided and he stands with different numbers of threads in (after 2atent .............. amtl. Docket N27350 IC / 59e) characterized in that the the greatest possible eccentricity of the rotor is decisive for the size of its face diameter and for its pitch. 2. Läufer für Schneckenpumpen gemäß Anspruch 1, dadurch gekennzeichnet, daß der Stirndurchmesser (d) des Läufers vorzugsweise um das Sechsfache der größtmöglichsten Exzentrizität (a) herum liegt und seine Steigung (s) das Dreifache des Stirndurchmessers beträgt.- 2. rotor for screw pumps according to claim 1, characterized in that the face diameter (d) of the rotor is preferably around six times the greatest possible eccentricity (a) and its pitch (s) is three times the face diameter.
DE19661553148 1966-03-12 1966-03-12 Runner for screw pumps Pending DE1553148A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0028195 1966-03-12

Publications (1)

Publication Number Publication Date
DE1553148A1 true DE1553148A1 (en) 1969-07-03

Family

ID=7344574

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661553148 Pending DE1553148A1 (en) 1966-03-12 1966-03-12 Runner for screw pumps

Country Status (1)

Country Link
DE (1) DE1553148A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381413A2 (en) * 1989-02-01 1990-08-08 Mono Pumps Limited Helical gear pump
US5120204A (en) * 1989-02-01 1992-06-09 Mono Pumps Limited Helical gear pump with progressive interference between rotor and stator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0381413A2 (en) * 1989-02-01 1990-08-08 Mono Pumps Limited Helical gear pump
EP0381413A3 (en) * 1989-02-01 1990-12-05 Mono Pumps Limited Helical gear pump
US5120204A (en) * 1989-02-01 1992-06-09 Mono Pumps Limited Helical gear pump with progressive interference between rotor and stator

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