EP1519044A1 - Rotary piston type pump, in particular for pumping particle loaded fluids - Google Patents

Rotary piston type pump, in particular for pumping particle loaded fluids Download PDF

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Publication number
EP1519044A1
EP1519044A1 EP04020942A EP04020942A EP1519044A1 EP 1519044 A1 EP1519044 A1 EP 1519044A1 EP 04020942 A EP04020942 A EP 04020942A EP 04020942 A EP04020942 A EP 04020942A EP 1519044 A1 EP1519044 A1 EP 1519044A1
Authority
EP
European Patent Office
Prior art keywords
rotary pistons
pump
motors
fluids
liquids
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.)
Granted
Application number
EP04020942A
Other languages
German (de)
French (fr)
Other versions
EP1519044B1 (en
Inventor
Heinz Deyen
Paul Krampe
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.)
Hugo Vogelsang Maschinenbau GmbH
Original Assignee
Hugo Vogelsang Maschinenbau GmbH
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 Hugo Vogelsang Maschinenbau GmbH filed Critical Hugo Vogelsang Maschinenbau GmbH
Publication of EP1519044A1 publication Critical patent/EP1519044A1/en
Application granted granted Critical
Publication of EP1519044B1 publication Critical patent/EP1519044B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • 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
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots 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
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F04C2240/402—Plurality of electronically synchronised motors
    • 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
    • F04C2240/00—Components
    • F04C2240/50—Bearings

Definitions

  • the invention relates to a pump for conveying liquids, from particulate laden fluids or fluids comprising a pair intermeshing multi-leaf helical rotary lobe, the in turn powered by motors and in a pump housing are stored with inlet and outlet.
  • the present invention is about a pump of the above structurally simplify this type.
  • Such pumps can without constant velocity gearbox and without synchronization be used, both in the forward and in the Reverse operation without causing interference.
  • Such pumps in connection with municipal multi-purpose vehicles having a front intake with Hydraulic connection, where you have a hydraulic pump can connect.
  • the pump is connected to the suction side by means of a hose an entrained water tank and on the pressure side to a hydraulic controllable arm connected.
  • the driver may then, e.g. Approach trees and deliberately irrigate them without getting off his vehicle got to.
  • 10 designates the housing of a pump in which cooperating rotary pistons 22 and 32 are arranged to To perform pumping operations. Not shown are the inlet and the outlet of Pump.
  • the housing 10 of the pump is with a plate 11 to the outside completed, where two holes have been placed through the plate which in turn serve to carry out waves 21 and 31.
  • Fig. 1 two hydraulic motors 20 and 30 are shown, only schematically and only partially. In any case, these are Hydraulic motors 20 and 30 with shaft ends 21 and 31 formed by outside protrude into the housing 10, 11 of the pump. To this Shaft ends 21 and 31 are the two rotary pistons 22 and 32 from axially outside deferred to the drive.
  • the rotors can be made of metal or plastic and may have an appropriate coating, so they too aggressive media can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The hydraulically driven pump for the feed of liquids, particle laden liquids, or fluids has a pair of intermeshing, multi-vaned, bevel-toothed rotary pistons driven by hydraulic motors and mounted in the pump casing (10). The two identical rotary pistons are driven independently of one another by two similar hydraulic motors (20,30) which are hydraulically connected in parallel and constantly transmit equal torque to the rotary pistons. The rotary pistons are mounted on the shaft ends (21,31) of the hydraulic motors.

Description

Die Erfindung bezieht sich auf eine Pumpe zur Förderung von Flüssigkeiten, von mit Partikeln beladenen Flüssigkeiten oder von Fluiden, aufweisend ein Paar miteinander kämmender mehrflügeliger schräg verzahnter Drehkolben, die ihrerseits vermittels von Motoren angetrieben und in einem Pumpengehäuse mit Einlass und Auslass gelagert sind.The invention relates to a pump for conveying liquids, from particulate laden fluids or fluids comprising a pair intermeshing multi-leaf helical rotary lobe, the in turn powered by motors and in a pump housing are stored with inlet and outlet.

Es sind hydraulisch angetriebene Pumpen bekannt, die insbesondere dann eingesetzt werden, wenn partikelbeladene Flüssigkeiten gepumpt werden müssen. Ein wesentliches Merkmal solcher Pumpen ist die Synchronisation, die unbedingt erforderlich ist, damit die Kolben zueinander geordnet arbeiten können. Konstruktiv schlägt sich dies in einem Gleichlaufgetriebe nieder, welches das einwandfreie Arbeiten der Drehkolben sicherstellen muss.There are known hydraulically driven pumps, especially then be used when pumping particle-laden liquids have to. An essential feature of such pumps is the synchronization, which is absolutely necessary for the pistons to work orderly can. This is reflected in a constant velocity gearbox constructively which must ensure the proper functioning of the rotary pistons.

Bei der vorliegenden Erfindung geht es darum, eine Pumpe der eingangs genannten Art baulich zu vereinfachen.The present invention is about a pump of the above structurally simplify this type.

Erreicht wird dies dadurch, dass bei einer Pumpe der eingangs genannten Art in der ersten Ausführungsform die beiden zueinander identischen Drehkolben von zwei gleichen Hydraulikmotoren unabhängig voneinander angetrieben und hydraulisch parallel geschaltet sind und somit stets die gleichen Drehmomente auf die Drehkolben übertragen und in einer zweiten Ausführungsform die beiden zueinander identischen Drehkolben von zwei gleichen Elektromotoren unabhängig voneinander angetrieben sind und dass die Elektromotoren elektrisch parallel geschaltet sind und stets die gleichen Drehmomente auf die Drehkolben übertragen.This is achieved by the fact that in a pump of the type mentioned in the first embodiment, the two mutually identical rotary pistons driven by two identical hydraulic motors independently and hydraulically connected in parallel and thus always the same torques transferred to the rotary piston and in a second embodiment, the two mutually identical rotary piston of two identical electric motors are driven independently of each other and that the electric motors are electrically connected in parallel and always the same torques on the Transfer rotary piston.

Solche Pumpen können ohne Gleichlaufgetriebe und ohne Synchronisation eingesetzt werden, und zwar sowohl im Vorwärts- als auch im Rückwärtsbetrieb, ohne dass es dabei zu Störungen kommen kann. Such pumps can without constant velocity gearbox and without synchronization be used, both in the forward and in the Reverse operation without causing interference.

Besonders vorteilhaft ist der Einsatzzweck solcher Pumpen im Zusammenhang mit kommunalen Mehrzweckfahrzeugen, die eine Frontaufnahme mit Hydraulikanschluss aufweisen, an der man eine hydraulische Pumpe anschließen kann. Die Pumpe wird mittels eines Schlauches saugseitig an einen mitgeführten Wassertank und druckseitig an einen hydraulisch steuerbaren Arm angeschlossen. Der Fahrer kann dann z.B. Bäume anfahren und diese gezielt bewässern, ohne dass er von seinem Fahrzeug absteigen muss.Particularly advantageous is the purpose of such pumps in connection with municipal multi-purpose vehicles having a front intake with Hydraulic connection, where you have a hydraulic pump can connect. The pump is connected to the suction side by means of a hose an entrained water tank and on the pressure side to a hydraulic controllable arm connected. The driver may then, e.g. Approach trees and deliberately irrigate them without getting off his vehicle got to.

Weitere vorteilhafte Merkmale gehen aus den Unteransprüchen hervor, nämlich dass
   die Drehkolben einseitig gelagert sind,
   die Drehkolben auf den Wellenenden der Motoren gelagert sind,
   die Drehkolben auf die Wellenenden aufschiebbar sind und
   zwischen den Drehkolben und den Motoren jeweils eine Hülse angeordnet ist.Further advantageous features emerge from the dependent claims, namely that
the rotors are mounted on one side,
the rotary pistons are mounted on the shaft ends of the engines,
the rotary pistons are pushed onto the shaft ends and
in each case a sleeve is arranged between the rotary piston and the motors.

Die Erfindung wird nachstehend anhand der Zeichnung beispielsweise erläutert.

Fig. 1
zeigt eine Längsschnittansicht durch eine Pumpe mit Hydraulikantrieb gemäß der Erfindung.
Fig. 2
zeigt eine Schnittansicht gemäß A-A der Fig. 1
The invention will be explained below with reference to the drawing, for example.
Fig. 1
shows a longitudinal sectional view of a pump with hydraulic drive according to the invention.
Fig. 2
shows a sectional view according to AA of Fig. 1st

In den Figuren ist mit 10 das Gehäuse einer Pumpe bezeichnet, in dem zusammenwirkende Drehkolben 22 und 32 angeordnet sind, um Pumpvorgänge auszuführen. Nicht gezeigt sind der Einlass und der Auslass der Pumpe.In the figures, 10 designates the housing of a pump in which cooperating rotary pistons 22 and 32 are arranged to To perform pumping operations. Not shown are the inlet and the outlet of Pump.

Das Gehäuse 10 der Pumpe ist mit einer Platte 11 nach außen hin abgeschlossen, wobei durch die Platte hindurch zwei Bohrungen gelegt worden sind, die wiederum der Durchführung von Wellen 21 und 31 dienen.The housing 10 of the pump is with a plate 11 to the outside completed, where two holes have been placed through the plate which in turn serve to carry out waves 21 and 31.

In der Fig. 1 sind zwei Hydraulikmotoren 20 und 30 gezeigt, und zwar nur schematisch und auch nur zum Teil. In jedem Falle sind diese Hydraulikmotoren 20 und 30 mit Wellenenden 21 und 31 ausgebildet, die von außen her in das Gehäuse 10, 11 der Pumpe hineinragen. Auf diese Wellenenden 21 und 31 sind die beiden Drehkolben 22 und 32 von axial außen zum Antrieb hin aufgeschoben.In Fig. 1, two hydraulic motors 20 and 30 are shown, only schematically and only partially. In any case, these are Hydraulic motors 20 and 30 with shaft ends 21 and 31 formed by outside protrude into the housing 10, 11 of the pump. To this Shaft ends 21 and 31 are the two rotary pistons 22 and 32 from axially outside deferred to the drive.

Die richtige Lage der Drehkolben 22 und 32 auf den Wellenenden 21 und 31 wird durch Hülsen sichergestellt, wobei in Fig. 1 lediglich die Hülse 23 für den oberen Drehkolben gezeigt ist. Die Hülse 23 dient nicht nur als Anschlag, sondern ist auch dazu gedacht, als Auflager für Laufbuchsen zu dienen, damit eine Wellenabdichtung 24 möglich ist.The correct position of the rotary pistons 22 and 32 on the shaft ends 21 and 31st is ensured by sleeves, in Fig. 1, only the sleeve 23 for the upper rotary piston is shown. The sleeve 23 serves not only as a stop, but is also intended to serve as a support for liners so a shaft seal 24 is possible.

Im Zusammenhang mit der vorliegenden Erfindung ist es wesentlich, dass der Achsabstand der beiden Wellen 21 und 31 bzw. der Drehkolben 22 so klein gewählt worden ist, dass nur noch Hydraulikantriebe für den Antrieb der beiden Drehkolben in Frage kommen. Es wird ein gedrungener Aufbau der Pumpe insgesamt ermöglicht, wenn Hydraulikmotoren eingesetzt werden.In the context of the present invention, it is essential that the Axial distance of the two shafts 21 and 31 and the rotary piston 22 so small it has been chosen that only hydraulic drives for driving the two Rotary pistons come into question. It will be a stocky construction of the pump overall allows when hydraulic motors are used.

Weiterhin ist für die Erfindung wesentlich, dass die beiden Drehkolben zueinander identisch ausgebildet sind, das gleiche trifft auch für die Motoren zu. Furthermore, it is essential for the invention that the two rotary pistons are identical to each other, the same applies to the engines.

Bei den Pumpen gemäß der Erfindung ist es möglich, die beiden Drehkolben direkt auf das Antriebsende der Motoren aufzusetzen, zusätzliche separate Wellen sind nicht erforderlich.In the pumps according to the invention it is possible to use the two rotary pistons directly on the drive end of the motors, additional separate Waves are not required.

Auch können die Drehkolben aus Metall oder aus Kunststoff hergestellt werden und können eine entsprechende Beschichtung haben, so dass sie auch bei aggressiven Medien eingesetzt werden können.Also, the rotors can be made of metal or plastic and may have an appropriate coating, so they too aggressive media can be used.

Claims (6)

Pumpe zur Förderung von Flüssigkeiten, von mit Partikeln beladenen Flüssigkeiten oder von Fluiden, aufweisend ein Paar miteinander kämmender mehrflügeliger schräg verzahnter Drehkolben, die ihrerseits vermittels von Motoren angetrieben und in einem Pumpengehäuse mit Einlass und Auslass gelagert sind, dadurch gekennzeichnet, dass die beiden zueinander identischen Drehkolben (22, 32) von zwei gleichen Hydraulikmotoren (20, 30) unabhängig voneinander angetrieben sind und dass die Hydraulikmotoren hydraulisch parallel geschaltet sind und stets die gleichen Drehmomente auf die Drehkolben übertragen.Pump for conveying liquids, of particle-laden liquids or fluids, comprising a pair of intermeshing multi-leaf helical rotary pistons, which are in turn driven by motors and stored in a pump housing with inlet and outlet, characterized in that the two identical to each other Rotary pistons (22, 32) of two identical hydraulic motors (20, 30) are driven independently of each other and that the hydraulic motors are hydraulically connected in parallel and always transmit the same torques to the rotary pistons. Pumpe zur Förderung von Flüssigkeiten, von mit Partikeln beladenen Flüssigkeiten oder von Fluiden, aufweisend ein Paar miteinander kämmender mehrflügeliger schräg verzahnter Drehkolben, die ihrerseits vermittels von Motoren angetrieben und in einem Pumpengehäuse mit Einlass und Auslass gelagert sind, dadurch gekennzeichnet, dass die beiden zueinander identischen Drehkolben (22, 32) von zwei gleichen Elektromotoren (20, 30) unabhängig voneinander angetrieben sind und dass die Elektromotoren elektrisch parallel geschaltet sind und stets die gleichen Drehmomente auf die Drehkolben übertragen.Pump for conveying liquids, of particle-laden liquids or fluids, comprising a pair of intermeshing multi-leaf helical rotary pistons, which are in turn driven by motors and stored in a pump housing with inlet and outlet, characterized in that the two identical to each other Rotary pistons (22, 32) of two identical electric motors (20, 30) are driven independently of each other and that the electric motors are electrically connected in parallel and always transmit the same torques to the rotary pistons. Pumpe nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Drehkolben (22, 23) einseitig gelagert sind. Pump according to one of claims 1 or 2, characterized in that the rotary pistons (22, 23) are mounted on one side. Pumpe nach Anspruch 3, dadurch gekennzeichnet, dass die Drehkolben (22, 32) auf den Wellenenden (21, 31) der Motoren (20, 30) gelagert sind.Pump according to claim 3, characterized in that the rotary pistons (22, 32) are mounted on the shaft ends (21, 31) of the motors (20, 30). Pumpe nach Anspruch 4, dadurch gekennzeichnet, dass die Drehkolben (22, 32) auf die Wellenenden (21, 31) aufschiebbar sind.Pump according to claim 4, characterized in that the rotary pistons (22, 32) can be pushed onto the shaft ends (21, 31). Pumpe nach Anspruch 5, dadurch gekennzeichnet, dass zwischen den Drehkolben (22, 32) und den Motoren (20, 30) jeweils eine Hülse (23) angeordnet ist.Pump according to claim 5, characterized in that between the rotary pistons (22, 32) and the motors (20, 30) each have a sleeve (23) is arranged.
EP04020942A 2003-09-24 2004-09-03 Rotary piston type pump, in particular for pumping particle loaded fluids Expired - Lifetime EP1519044B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20314793U DE20314793U1 (en) 2003-09-24 2003-09-24 Hydraulically driven pump
DE20314793U 2003-09-24

Publications (2)

Publication Number Publication Date
EP1519044A1 true EP1519044A1 (en) 2005-03-30
EP1519044B1 EP1519044B1 (en) 2006-06-21

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Family Applications (1)

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EP04020942A Expired - Lifetime EP1519044B1 (en) 2003-09-24 2004-09-03 Rotary piston type pump, in particular for pumping particle loaded fluids

Country Status (3)

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EP (1) EP1519044B1 (en)
AT (1) ATE331140T1 (en)
DE (2) DE20314793U1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014067988A2 (en) * 2012-10-31 2014-05-08 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump having direct drive
WO2018113898A1 (en) * 2016-12-19 2018-06-28 Renk-Maag Gmbh Hydraulic drive system for a delivery pump
US11953007B2 (en) 2018-12-13 2024-04-09 Vogelsang Gmbh & Co Kg Rotary lobe pump with internal bearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045440B4 (en) * 2008-09-02 2017-02-09 Börger GmbH Rotary piston of a rotary lobe pump and rotary lobe pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184155A (en) * 1963-04-17 1965-05-18 Cooper Bessemer Corp Motor compressor unit
US5295798A (en) * 1991-09-05 1994-03-22 Matsushita Electric Industrial Co., Ltd. Fluid rotating apparatus with rotor communicating path
DE19522555A1 (en) * 1995-06-21 1997-01-02 Sihi Ind Consult Gmbh Dual-rotor type rotary piston compressor e.g. for vacuum pump
WO1997001037A1 (en) * 1995-06-21 1997-01-09 Sihi Industry Consult Gmbh Vacuum pump
DE20305937U1 (en) * 2003-04-12 2004-05-19 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump with integrated hydraulic motor has synchronizing gear unit formed as gear pump with intakes and outlets for pumped medium and hydraulic fluid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184155A (en) * 1963-04-17 1965-05-18 Cooper Bessemer Corp Motor compressor unit
US5295798A (en) * 1991-09-05 1994-03-22 Matsushita Electric Industrial Co., Ltd. Fluid rotating apparatus with rotor communicating path
DE19522555A1 (en) * 1995-06-21 1997-01-02 Sihi Ind Consult Gmbh Dual-rotor type rotary piston compressor e.g. for vacuum pump
WO1997001037A1 (en) * 1995-06-21 1997-01-09 Sihi Industry Consult Gmbh Vacuum pump
DE20305937U1 (en) * 2003-04-12 2004-05-19 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump with integrated hydraulic motor has synchronizing gear unit formed as gear pump with intakes and outlets for pumped medium and hydraulic fluid

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014067988A2 (en) * 2012-10-31 2014-05-08 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump having direct drive
WO2014067988A3 (en) * 2012-10-31 2014-11-13 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump having direct drive
CN104870750A (en) * 2012-10-31 2015-08-26 福格申机械有限公司 Rotary piston pump having direct drive
JP2015535045A (en) * 2012-10-31 2015-12-07 フーゴ・フォーゲルザング・マシネンバウ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツングＨｕｇｏ Ｖｏｇｅｌｓａｎｇ Ｍａｓｃｈｉｎｅｎｂａｕ Ｇｍｂｈ Rotary lobe pump with direct drive
US9719507B2 (en) 2012-10-31 2017-08-01 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump having direct drive
AU2013340894B2 (en) * 2012-10-31 2017-08-31 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump having direct drive
CN104870750B (en) * 2012-10-31 2018-02-16 福格申机械有限公司 rotary piston pump with direct drive
WO2018113898A1 (en) * 2016-12-19 2018-06-28 Renk-Maag Gmbh Hydraulic drive system for a delivery pump
US11953007B2 (en) 2018-12-13 2024-04-09 Vogelsang Gmbh & Co Kg Rotary lobe pump with internal bearing

Also Published As

Publication number Publication date
EP1519044B1 (en) 2006-06-21
ATE331140T1 (en) 2006-07-15
DE20314793U1 (en) 2005-02-03
DE502004000814D1 (en) 2006-08-03

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