DE3940629A1 - Compressed air membrane or piston pump - uses integrated pressure reduction valve - Google Patents

Compressed air membrane or piston pump - uses integrated pressure reduction valve

Info

Publication number
DE3940629A1
DE3940629A1 DE3940629A DE3940629A DE3940629A1 DE 3940629 A1 DE3940629 A1 DE 3940629A1 DE 3940629 A DE3940629 A DE 3940629A DE 3940629 A DE3940629 A DE 3940629A DE 3940629 A1 DE3940629 A1 DE 3940629A1
Authority
DE
Germany
Prior art keywords
pressure
control
pump
valve
pump according
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.)
Withdrawn
Application number
DE3940629A
Other languages
German (de)
Inventor
Tomas Sirek
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE3940629A priority Critical patent/DE3940629A1/en
Publication of DE3940629A1 publication Critical patent/DE3940629A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

Membrane or piston pump driven by a gaseous medium and having an integrated pressure reduction valve which can be adjusted to control very low pressures of the outlet fluid. The pressure of the outlet fluid (control pressure) acts through a mesh (10) channel (11) and throttle (12) on the pressure reduction valve membrane, and a control bore (3). ADVANTAGE - Compressed air pump which maintains constant a very low outlet pressure and is reliable in any position.

Description

Es sind viele Systeme von Membran- und Kolbenpumpen die durch ein anderes Medium angetrieben werden, bekannt. Fast alle haben eine Trennwand, eine Membrane bei direktem Antrieb, oder einen Differenzialkolben bei einem bestimmten Übersetzungsgrad.There are many systems of diaphragm and piston pumps which are driven by another medium. Almost all of them have a partition, a membrane with direct Drive, or a differential piston at a particular Degree of translation.

Die Membranpumpen werden meistens mit gasförmigen Medien angetrieben. Durch Vorschalten von einem Druckminder- Ventil im Zulauf von Antriebsmedium kann der Ausgangsdruck der Pumpe reduziert werden. Je nach Steuerungsart der Pumpe auf einen Minimaldruck von ca. 1 bar. Bei niedrigeren Drücken schaltet der Steuerschieber nicht mehr zuverlässig und die Pumpe bleibt oft stehen.The diaphragm pumps are mostly gaseous Media driven. By connecting a pressure reducing Valve in the supply of drive medium can the outlet pressure the pump can be reduced. Depending on the control type of the pump to a minimum pressure of approx. 1 bar. At lower ones Pressing the control spool no longer switches reliably and the pump often stops.

Die Pumpen mit einer mechanischen Umsteuerung sind in der Herstellung aufwendiger.The pumps with a mechanical changeover are in the Manufacturing complex.

Bei keiner bekannten Pumpenkonstruktion sind die inneren Pumpenverluste auskompensiert.In no known pump construction are the inner ones Pump losses compensated.

Die Erfindung hat sich zur Aufgabe gestellt eine Medium angetriebene Pumpe zu schaffen, die in der Lage ist, einen sehr niedrigen Ausgangsdruck konstant zu halten und in jede Lage zuverlässig zu arbeiten.The invention has set itself the task To create medium powered pump that is able to to keep a very low outlet pressure constant and to work reliably in any position.

Die genannten Anforderungen an die Pumpe werden durch folgende Konstruktionsmaßnahmen erzielt:The specified requirements for the pump are met by achieved the following construction measures:

Der Pumpe wird nur voller Netzdruck zugeführt. Die Steuerung des Umschaltschiebers erfolgt durch den vollen Druck.The pump is only supplied at full network pressure. The switch is controlled by the full pressure.

Der Umschaltschieber steuert, durch das integrierte Druckminderventil den reduzierten Arbeitsdruck, wechselweise auf die beiden gegenüberliegenden Druckkammern der Pumpe.The switching slide controls, through the integrated Pressure reducing valve the reduced working pressure, alternately to the two opposite pressure chambers of the pump.

Das Druckminderventil wird für sehr niedrige Pumpen- Ausgangsdrücke durch den Flüssigkeitsausgangsdruck gesteuert.The pressure reducing valve is used for very low pump Output pressures controlled by the fluid outlet pressure.

Der Arbeitsdruck (nach dem Druckminderventil) wird um die Pumpenverluste, gegenüber dem Pumpenausgangsdruck (Steuerdruck) höher liegen.The working pressure (after the pressure reducing valve) is around the Pump losses compared to the pump outlet pressure (control pressure) lie higher.

Durch Umtauschen der Stopfen (13) mit Drossel (12) wird das Druckminderventil mit dem Arbeitsdruck gesteuert. Die inneren Verluste der Pumpe werden nicht mehr auskompensiert. By exchanging the plug ( 13 ) with throttle ( 12 ), the pressure reducing valve is controlled with the working pressure. The internal losses of the pump are no longer compensated for.

SteuerfunktionControl function

Das Arbeitsmedium z. B. Druckluft wird der Pumpe direkt aus der Leitung zugeführt.The working medium z. B. Compressed air is the pump directly fed from the line.

Durch die Anschlußbohrung (1) fließt das Arbeitsmedium in den Ringkanal (2) und weiter in die Druckkammer (3) des Druckminderventils, andererseits durch den Kanal (4) in die Mitte des Steuerventils.The working medium flows through the connection bore ( 1 ) into the ring channel ( 2 ) and further into the pressure chamber ( 3 ) of the pressure reducing valve, and on the other hand through the channel ( 4 ) into the center of the control valve.

In der Mitte des Steuerventils befindet sich ein Kugelumschaltventil (7) und auf beiden Seiten spiegelbildlich angeordnet sind zwei Kegelöffnungsventile (8).In the middle of the control valve there is a ball switch valve ( 7 ) and two cone opening valves ( 8 ) are arranged in mirror image on both sides.

Die Räume zwischen der Kugel und dem Kegelventil sind jeweils mit dem Steuerraum X und Y des Steuerschiebers (6) verbunden.The spaces between the ball and the plug valve are connected to the control chamber X and Y of the control spool ( 6 ).

Erreicht die Membrane ihre Endlage wird das Kegelventil (8) des Steuerventils geöffnet. In dem Steuerraum X bzw. Y sinkt der Druck. Durch die entstehende Druckdifferenz schließt das Umschaltventil (7) den geöffneten Raum X bzw. Y und öffnet den Durchgang des Steuerdrucks zum gegenüberliegenden Raum Y bzw. X. Der Umschaltschieber (6) wird durch die Druckdifferenz in den Räumen X und Y umgeschaltet.When the diaphragm reaches its end position, the plug valve ( 8 ) of the control valve is opened. The pressure drops in the control room X and Y, respectively. Due to the resulting pressure difference, the changeover valve ( 7 ) closes the open room X or Y and opens the passage of the control pressure to the opposite room Y or X. The changeover slide ( 6 ) is switched by the pressure difference in rooms X and Y.

Der reduzierte Arbeitsdruck wird von P nach A bzw. B und der Rücklauf von B nach S bzw. von A nach R geleitet. Die Pumpe wird dann automatisch von einer Richtung in die andere umgeschaltet.The reduced working pressure changes from P to A or B and the return flow from B to S or from A to R. The pump will then automatically move from one direction to the other others switched.

Claims (6)

1. Durch gasförmige Medien angetriebene Membran- oder Kolbenpumpe, mit integriertem Druckminderventil.1. Membrane driven by gaseous media or piston pump, with integrated pressure reducing valve. 2. Pumpe nach Anspruch 1, dadurch gekennzeichnet, daß das Druckminderventil für sehr niedrige Drücke von der Ausgangsflüssigkeit gesteuert wird. Der Druck der Ausgangsflüssigkeit (Steuerdruck) wirkt durch ein Sieb (10), Kanal (11) und Drossel (12) auf die Druckminderventilmembrane.2. Pump according to claim 1, characterized in that the pressure reducing valve for very low pressures is controlled by the starting liquid. The pressure of the starting liquid (control pressure) acts on the pressure reducing valve membrane through a strainer ( 10 ), channel ( 11 ) and throttle ( 12 ). 3. Pumpe nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Steuerung, durch den vollen Anschlußdruck, von dem Druckanschluß (1) durch den Ringkanal (2) und die Steuerbohrung (3) versorgt wird.3. Pump according to claim 1 and 2, characterized in that the control is supplied by the full connection pressure from the pressure connection ( 1 ) through the ring channel ( 2 ) and the control bore ( 3 ). 3. Pumpe nach Anspruch 1-3, dadurch gekennzeichnet, daß die Steuerung aus aus einem Kugelumschaltventil (7) und jeweils einem Öffnungsventil (8), für die linke und die rechte Seite besteht.3. Pump according to claims 1-3, characterized in that the control consists of a ball switch valve ( 7 ) and in each case an opening valve ( 8 ) for the left and right side. 5. Pumpe nach Anspruch 1-4, dadurch gekennzeichnet, daß der vom Druckminderventil reduzierte Arbeitsdruck durch den Kanal (5) zum Umschaltschieber (6) geführt wird. Der Umschaltschieber (6) verteilt dann den Arbeitsdruck wechselweise durch den Anschluß A und B auf die zwei Pumpenkammern.5. Pump according to claim 1-4, characterized in that the working pressure reduced by the pressure reducing valve is guided through the channel ( 5 ) to the switching slide ( 6 ). The changeover slide ( 6 ) then distributes the working pressure alternately through ports A and B to the two pump chambers. 6. Pumpe nach Anspruch 1-5, dadurch gekennzeichnet, daß die Steuerung an den Anschlüssen X und Y jeweils ein Entwässerungsventil (9) hat, das bei Störung durch Ansammlung von Kondenswasser oder andere Flüssigkeit betätigt wird.6. Pump according to claim 1-5, characterized in that the control at the connections X and Y each has a drainage valve ( 9 ) which is actuated in the event of a fault due to the accumulation of condensed water or other liquid.
DE3940629A 1989-12-08 1989-12-08 Compressed air membrane or piston pump - uses integrated pressure reduction valve Withdrawn DE3940629A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3940629A DE3940629A1 (en) 1989-12-08 1989-12-08 Compressed air membrane or piston pump - uses integrated pressure reduction valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3940629A DE3940629A1 (en) 1989-12-08 1989-12-08 Compressed air membrane or piston pump - uses integrated pressure reduction valve

Publications (1)

Publication Number Publication Date
DE3940629A1 true DE3940629A1 (en) 1991-06-13

Family

ID=6395084

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3940629A Withdrawn DE3940629A1 (en) 1989-12-08 1989-12-08 Compressed air membrane or piston pump - uses integrated pressure reduction valve

Country Status (1)

Country Link
DE (1) DE3940629A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326234A (en) * 1993-02-17 1994-07-05 Versa-Matic Tool, Inc. Fluid driven pump
US5334003A (en) * 1993-01-25 1994-08-02 The Aro Corporation Air valving mechanism, in combination with a double diaphragm pump subassembly
DE19946562A1 (en) * 1999-09-29 2001-04-19 Oliver Timmer Membrane pump used as a double membrane pump has two housing valve recesses, a nonreturn valve, a control valve, and two lid valve recesses
EP1785630A1 (en) * 2005-11-11 2007-05-16 M & C Products Analysentechnik GmbH Pump
CN115234483A (en) * 2022-08-23 2022-10-25 中铁工程装备集团有限公司 Pneumatic diaphragm pump air valve chamber and pneumatic diaphragm pump

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5334003A (en) * 1993-01-25 1994-08-02 The Aro Corporation Air valving mechanism, in combination with a double diaphragm pump subassembly
US5326234A (en) * 1993-02-17 1994-07-05 Versa-Matic Tool, Inc. Fluid driven pump
DE19946562A1 (en) * 1999-09-29 2001-04-19 Oliver Timmer Membrane pump used as a double membrane pump has two housing valve recesses, a nonreturn valve, a control valve, and two lid valve recesses
DE19946562C2 (en) * 1999-09-29 2003-10-30 Oliver Timmer Compact double diaphragm pump
EP1785630A1 (en) * 2005-11-11 2007-05-16 M & C Products Analysentechnik GmbH Pump
CN115234483A (en) * 2022-08-23 2022-10-25 中铁工程装备集团有限公司 Pneumatic diaphragm pump air valve chamber and pneumatic diaphragm pump
CN115234483B (en) * 2022-08-23 2023-11-24 中铁工程装备集团有限公司 Pneumatic diaphragm pump gas valve chamber and pneumatic diaphragm pump

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