EP2852762B1 - Pompe à pistons rotatifs dotée d'une entrée et d'une sortie optimisées - Google Patents

Pompe à pistons rotatifs dotée d'une entrée et d'une sortie optimisées Download PDF

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Publication number
EP2852762B1
EP2852762B1 EP13726670.6A EP13726670A EP2852762B1 EP 2852762 B1 EP2852762 B1 EP 2852762B1 EP 13726670 A EP13726670 A EP 13726670A EP 2852762 B1 EP2852762 B1 EP 2852762B1
Authority
EP
European Patent Office
Prior art keywords
pump
recesses
rotary piston
outlet
inlet
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.)
Active
Application number
EP13726670.6A
Other languages
German (de)
English (en)
Other versions
EP2852762A1 (fr
Inventor
Stefan Weigl
Reinhard Denk
Hisham Kamal
Josef Strassl
Robert Kurz
Bernhard Murrenhoff
Thomas Boehme
Gunther Herr
Franz Kneidl
Mikael Tekneyan
Matthias Gradl
Erwin Weber
Roger Willis
Stefan Kern
Johann Kreidl
Marcel Verhoeven
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme 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.)
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Publication date
Application filed by Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP2852762A1 publication Critical patent/EP2852762A1/fr
Application granted granted Critical
Publication of EP2852762B1 publication Critical patent/EP2852762B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04C2/14—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 toothed rotary pistons
    • F04C2/18—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 toothed rotary pistons with similar tooth forms
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049—Equalization of pressure pulses
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C2/086—Carter
    • 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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids

Definitions

  • the present invention relates to a rotary pump for the delivery of liquids and for the promotion of solids-containing liquids.
  • the rotary lobe pump consists of a pump housing, which is provided with an inlet and an outlet.
  • the pump housing has a lining.
  • In the pump housing, or within the lining at least two oppositely rotating rotary pistons are arranged, which form pump chambers during their rotation. During the rotary movement, the rotary pistons are sealed against each other, against the pump housing and against the lining.
  • German patent application DE 10 2006 041 633 A1 discloses a pump with a housing formed from two intersecting cylinder sections, wherein inlet and outlet openings are provided on opposite sides and in each cylinder section, a rotor rotatable about the central longitudinal axis thereof is arranged.
  • the larger transverse axes of the rotor are in each case at least one movement phase approximately perpendicular to each other with the runners sealingly rolling against each other and against the housing inner wall, and extending from the intersection of the large transverse axes generatrix lines run each runner in opposite directions obliquely to the respective central longitudinal axis.
  • Each runner comprises two approximately club-shaped sections, which are connected at their narrower end via a constriction.
  • the two runners When the large transverse axes of the two runners are perpendicular to each other engages the club-shaped portion of a runner in the constriction of the other runner and the two runners roll sealingly from each other.
  • the two runners In each phase of the rotational movement, the two runners form a uniformly increasing suction volume in front of the inlet opening and a uniformly decreasing outlet volume in front of the outlet opening.
  • the surface lines acting as sealing lines are sinusoidal.
  • German utility model DE 20 2009 012 158 U1 discloses a rotary lobe pump for conveying a fluid medium containing solids.
  • the pump is provided with two rotary lobes with intermeshing lobe vanes and each having a rotation axis and an outer circumference, the axes of rotation of the two lobes being spaced apart from each other and parallel to each other and partially overlapping the outer peripheries of the two lobes, and a housing having an inlet opening and an outlet opening and an inner and an outer wall, wherein the inner wall of the housing in each case encloses a portion of the outer peripheries of the rotary piston and wherein the rotary piston pump is adapted to convey the medium in a conveying direction from the inlet to the outlet opening.
  • the German utility model DE 20 2006 020 113 U1 discloses a rotary lobe pump for conveying solids containing liquids.
  • the utility model is based on the task of pumping liquids containing solids in such a way that damage in the pump, in particular to the rotary piston, is prevented.
  • This task is realized by at least one specially designed ramp, through which the inlet is optimized. This optimization ensures that solids are directed into the pump chamber of the rotary lobe pump at a specific location.
  • a reduction of the cavitation is achieved by the special design of the ramps in the inlet and outlet of the rotary lobe pump.
  • an increase of the so-called housing angle is absolutely necessary. In this case, however, it is sufficient that only the lower housing half-angle has an angle of> 90 °.
  • German patent DE 94 751 A shows a capsule fan in which two counter-rotating pistons are moved, with which air is compressed and fed to an outlet.
  • the fan is provided with two special single-toothed rollers, each of which cooperates with a delivery piston so that each wing of the delivery piston is sealed by the roller C, whereby the roller C rolls into the following gap and compresses the air until the Wing releases the outlet to the pressure chamber.
  • the publication DE 34 27 282 A1 describes a rotary pump for the promotion of manure or the like.
  • the inner wall of the housing with respect to the axis of the associated rotary piston is radially movable. As a result, a relatively heavy wear on the outer jacket of the rotary piston can be caught, so that the pump power is not affected.
  • the invention has for its object to provide a rotary piston pump, with a promotion is largely possible without pulsation.
  • the rotary lobe pump consists of a pump housing, which is provided with an inlet and an outlet.
  • the pump housing has a lining.
  • In the pump housing, or within the lining at least two oppositely rotating rotary pistons are arranged, which form pump chambers during their rotation. During rotation, the rotary pistons are sealed against each other and against the liner within the pump housing.
  • In the lining at least two recesses are arranged in each pump room. The recesses are arranged in spatial proximity to the inlet and / or outlet. In the region of the inlet and in the region of the outlet, the pump housing and / or the lining can have reinforcements, which lead to a reduction in cross-section.
  • each pump chamber In a particular embodiment, four recesses are arranged in each pump chamber, wherein the recesses are always arranged in pairs. In a further embodiment, there are six recesses in each pump room, the recesses then being arranged in each case as a trio. It will be apparent to those skilled in the art from the foregoing that these are not an ultimate limitation of the invention. It is possible that a plurality of recesses may be arranged in the pump chambers. It is also conceivable to arrange a different number of recesses in the two pump chambers. As the pump room, the person skilled in the art refers to the space formed by the rotation of the rotary pistons in the rotary pump. This pump chamber, or the pump chambers, are located between the rotary piston and the pump housing.
  • the pulsation of the rotary pump is avoidable. Furthermore, by opening and closing the recesses, the pressure conditions in the pump chambers as well as in the inlet and / or outlet can be changed. These changes in pressure reduce or completely eliminate the blows occurring in the inlet and / or outlet due to the pulsation.
  • the expansion at the ends of the inlet and the outlet allows an optimized flow of the pumped medium, wherein the optimized flow, in combination with the recesses, causes an additional reduction of the pulsation.
  • the combination of recesses and reinforcement is designed such that during operation of the rotary lobe pump results in an optimized flow, with energy losses in the promotion and dead spaces within the rotary lobe pump are almost completely avoidable.
  • the spacing of the recesses from the inlet and / or the outlet is two to five times the cross section of the recesses.
  • the recesses may have different cross sections. There may be a gap between the recesses.
  • the depth of the recesses is at least ten to thirty percent of the wall thickness of the lining.
  • the recesses may have different depths.
  • the recesses in the inlet and outlet area and in the multiple arrangement may have different cross-sections and depths. It will be clear to those skilled in the art that the statements made above are not an exhaustive limitation of the invention. Rather, they refer to preferred embodiments. Due to the different number and configurations of the recesses, it is possible to change the pressure curves in the pump and thus the flows and the pulsation differently or avoided.
  • Fig. 1 shows a rotary piston pump according to the invention with an open pump housing.
  • the Fig. 2 to 4 show different positions of the rotary piston with contact to the lining of the pump housing.
  • Fig. 5 shows a lining for a rotary piston pump according to the invention with twelve recesses.
  • Fig. 1 shows a rotary piston pump 10 according to the invention with an open pump housing 12.
  • the rotary piston pump 10 consists of a pump housing 12, which is provided with an inlet 14 and an outlet 16.
  • a liner 18 is introduced in the pump housing 12.
  • the lining 18 is provided with recesses 24a, 24b, 24c and 24d. Furthermore, the lining 18 has reinforcements 26 in the region of the inlet 14 and the outlet 16.
  • the rotary pistons 20a and 20b are arranged with which the conveying medium is pumped from the inlet 14 to the outlet 16.
  • the recesses 24a, 24b, 24c and 24d are all open. The position of the rotary pistons shown may flow medium into the recesses 24a and 24c and medium may flow out of the recesses 24b and 24d.
  • Fig. 2 to 4 show various positions of the rotary piston 20a and 20b with contact to the lining 18 of the pump housing (not shown).
  • Fig. 2 shows a position in which the rotary pistons 20a and 20b are arranged parallel to each other.
  • the pump chambers 22a and 22b are open.
  • the pump chamber 22a is open to the inlet 14, so that medium can flow into the rotary piston pump.
  • the pump chamber 22b is open to the outlet 16 so that the medium can flow out of the rotary pump.
  • the reinforcements 26 are provided at an angle w of 20 to 160 degrees, preferably at an angle w of 45 to 135 degrees. By this angle w, an improved inflow and outflow of the medium in and out of the rotary piston pump is made possible.
  • the reinforcements 26 By the reinforcements 26, the cross-section of the inlet 14 and the outlet 16 is reduced. Towards their ends 28, the inlet 14 and the outlet 16 widen. By this expansion, an improved supply of medium into the rotary pump and a better pumping of the medium from the rotary pump is made possible.
  • Fig. 3 shows a second position of the rotary piston 20 a and 20 b in the lining 18 of the pump housing (not shown).
  • the pump chamber 22a is closed to the inlet 14 and the outlet 16 through the rotary piston 20a.
  • the recess 24a is opened and can take up medium.
  • the recess 24b is closed by the rotary piston 20a. When closing the recess 24b with the rotary piston 20a, the medium was conveyed out of the recess 24a in the direction of the outlet 16.
  • Fig. 4 shows a third position of the rotary piston 20a and 20b with contact to the lining 18 of the pump housing (not shown).
  • the rotary piston 20a is horizontal on the vertically arranged rotary piston 20b.
  • the pump chamber 22 a is closed relative to the inlet 14 and the outlet 16.
  • the two recesses 24a and 24b are open to the pump chamber 22a.
  • medium can tile from the recess 24b into the pump space 22a.
  • the pressure in the pump chamber 22a is increased.
  • the pressure compensation flow is much lower, since the differential pressure between the pump chamber 22a and the outlet 16 has already been significantly reduced.
  • Fig. 5 shows a liner 18 for a rotary piston pump according to the invention with twelve recesses 24.
  • the twelve recesses 24 are distributed to the two pump chambers 22a and 22b.
  • the recesses 24 are arranged in four groups of three recesses 24.
  • the pulsation can also be changed by this procedure.
  • the recesses 24 are successively opened and / or closed by the rotary pistons 20a and 20b. So that the respective pressure can be changed gradually.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (9)

  1. Pompe à pistons rotatifs (10) constituée d'un boîtier de pompe (12) pourvu d'une entrée (14) et d'une sortie (16), dans laquelle le boîtier de pompe (12) présente un revêtement (18) et au moins deux pistons rotatifs (20) tournant dans des directions opposées sont disposés dans le boîtier de pompe (12), le cas échéant dans le revêtement (18), lesquels forment des espaces de pompe (22) pendant leur rotation, dans laquelle les pistons rotatifs (20) sont isolés l'un par rapport à l'autre et par rapport au revêtement (18) à l'intérieur du boîtier de pompe (12), dans laquelle le boîtier de pompe (12) et/ou le revêtement (18) présentent des renforts (26) du revêtement (18) respectivement dans la région de l'entrée (14) et dans la région de la sortie (16), permettant de réaliser une réduction de section transversale, et dans laquelle la section transversale de l'entrée (14) et de la sortie (16) s'élargit à partir des renforts (26) vers les extrémités (28), caractérisée en ce qu'au moins deux cavités (24) sont disposées dans le revêtement (18) dans chaque espace de pompe (22), les cavités (24) étant disposés à proximité de l'entrée (14) et/ou de la sortie (16).
  2. Pompe à pistons rotatifs (10) selon la revendication 1, caractérisée en ce que quatre cavités (24) sont disposées dans chaque espace de pompe (22), les cavités (24) étant toujours disposées par paires.
  3. Pompe à pistons rotatifs (10) selon l'une des revendications 1 ou 2, caractérisée en ce que l'ouverture et la fermeture des cavités (24) par les pistons rotatifs (20) permet de modifier les rapports de pression dans les espaces de pompe (22) dans la région de l'entrée (14) et/ dans la région de la sortie (16), et d'éviter ainsi la pulsation de la pompe à pistons rotatifs (10).
  4. Pompe à pistons rotatifs (10) selon la revendication 3, caractérisée en ce que l'élargissement des sections transversales de l'entrée (14) et de la sortie (16) à partir des renforts (26) vers les extrémités (28) permet d'améliorer l'alimentation d'un fluide dans la pompe à pistons rotatifs (10) et le pompage du fluide hors de la pompe à pistons rotatifs (10), moyennant quoi l'écoulement du fluide de transport à travers la pompe à pistons rotatifs (10) est optimisé, et dans laquelle l'écoulement optimisé du fluide de transport, en combinaison avec les cavités (24), permet de réduire encore davantage la pulsation.
  5. Pompe à pistons rotatifs (10) selon l'une des revendications 1 à 4, caractérisée en ce que l'écart entre les cavités (24) et l'entrée (14) ou la sortie (16) mesure deux à cinq fois la section transversale des cavités (24).
  6. Pompe à pistons rotatifs (10) selon l'une des revendications 1 à 5, caractérisée en ce que les cavités (24) présentent des sections transversales différentes.
  7. Pompe à pistons rotatifs (10) selon l'une des revendications 1 à 6, caractérisée en ce qu'un espacement est présent entre les cavités (24).
  8. Pompe à pistons rotatifs (10) selon l'une des revendications 1 à 7, caractérisée en ce que les cavités (24) présentent une profondeur, la profondeur mesurant au moins dix à trente pourcent de l'épaisseur de paroi du revêtement (18).
  9. Pompe à pistons rotatifs selon l'une des revendications 1 à 8, caractérisée en ce que les cavités (24) présentent des profondeurs différentes.
EP13726670.6A 2012-05-02 2013-04-09 Pompe à pistons rotatifs dotée d'une entrée et d'une sortie optimisées Active EP2852762B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012008527A DE102012008527B3 (de) 2012-05-02 2012-05-02 Drehkolbenpumpe mit optimierten ein-und auslässen
PCT/DE2013/100127 WO2013163987A1 (fr) 2012-05-02 2013-04-09 Pompe à piston rotatif dotée d'entrées et de sorties optimisées

Publications (2)

Publication Number Publication Date
EP2852762A1 EP2852762A1 (fr) 2015-04-01
EP2852762B1 true EP2852762B1 (fr) 2018-10-31

Family

ID=48576164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13726670.6A Active EP2852762B1 (fr) 2012-05-02 2013-04-09 Pompe à pistons rotatifs dotée d'une entrée et d'une sortie optimisées

Country Status (11)

Country Link
US (1) US9617992B2 (fr)
EP (1) EP2852762B1 (fr)
JP (1) JP6236064B2 (fr)
KR (1) KR101695076B1 (fr)
CN (1) CN104285063B (fr)
AR (1) AR090913A1 (fr)
BR (1) BR112014026872B1 (fr)
DE (1) DE102012008527B3 (fr)
RU (1) RU2601042C2 (fr)
TW (1) TWI537469B (fr)
WO (1) WO2013163987A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014248B4 (de) * 2010-04-08 2016-04-28 Netzsch Pumpen & Systeme Gmbh Kontaktelemente für Drehkolbenpumpen
EP3067528B1 (fr) * 2015-03-13 2018-04-25 Inergy Automotive Systems Research (Société Anonyme) Pompe pour un fluide
CN109973376B (zh) * 2017-12-28 2021-06-18 比亚迪股份有限公司 电动油泵总成和具有其的车辆
CN109555683B (zh) * 2019-01-18 2024-03-29 宁波领智机械科技有限公司 一种输送固液双相的转子泵
DE102019103577A1 (de) * 2019-02-13 2020-08-13 Gebr. Becker Gmbh Drehkolbenpumpe

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DE94751C (fr) *
JPS5161005A (en) * 1974-11-26 1976-05-27 Atom Kagaku Toryo Kk Romenhyoshikizairyoatsusoyohonpu
JPS5546720U (fr) * 1978-09-20 1980-03-27
US4390331A (en) * 1980-04-17 1983-06-28 Nachtrieb Paul W Positive displacement four lobe impeller structure
GB2101218B (en) * 1981-07-03 1984-10-03 Ssp Pumps Rotary positive-displacement pumps
JPS5985494A (ja) * 1982-11-08 1984-05-17 Asahi Malleable Iron Co Ltd 回転機関
DE3427282A1 (de) * 1984-07-24 1986-01-30 Gerhard 8300 Landshut Eckart Drehkolbenpumpe zur foerderung von guelle o.dgl.
US4984975A (en) * 1989-01-26 1991-01-15 Thompson George A Rotary pump with cutting means
JP2616823B2 (ja) * 1989-10-11 1997-06-04 株式会社 アンレット ルーツ式ブロワーの低騒音化装置
JPH046783U (fr) * 1990-04-28 1992-01-22
GB9200217D0 (en) * 1992-01-07 1992-02-26 Snell Michael J Water turbines
JP2004270545A (ja) * 2003-03-07 2004-09-30 Shin Meiwa Ind Co Ltd ルーツ式流体機械
DE202005010467U1 (de) * 2005-06-30 2006-11-09 Hugo Vogelsang Maschinenbau Gmbh Vorrichtung zur Füllungsoptimierung bei Drehkolbenpumpen
DE102006041633A1 (de) * 2006-09-05 2008-03-13 Herold & Co. Gmbh Pumpe
DE102006045932A1 (de) * 2006-09-28 2008-04-03 Robert Bosch Gmbh Zahnradpumpe mit reduzierten Druckpulsationen auf der Förderseite
DE202009012158U1 (de) * 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe

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Also Published As

Publication number Publication date
BR112014026872A2 (pt) 2017-06-27
RU2601042C2 (ru) 2016-10-27
JP2015516037A (ja) 2015-06-04
TWI537469B (zh) 2016-06-11
CN104285063B (zh) 2017-06-30
JP6236064B2 (ja) 2017-11-22
WO2013163987A1 (fr) 2013-11-07
EP2852762A1 (fr) 2015-04-01
BR112014026872B1 (pt) 2021-11-30
TW201405011A (zh) 2014-02-01
KR101695076B1 (ko) 2017-01-10
KR20140142358A (ko) 2014-12-11
AR090913A1 (es) 2014-12-17
RU2014148250A (ru) 2016-06-20
US20150050174A1 (en) 2015-02-19
CN104285063A (zh) 2015-01-14
DE102012008527B3 (de) 2013-07-25
US9617992B2 (en) 2017-04-11

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