EP2475889B1 - Drehkolbenpumpe - Google Patents

Drehkolbenpumpe Download PDF

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Publication number
EP2475889B1
EP2475889B1 EP10750126.4A EP10750126A EP2475889B1 EP 2475889 B1 EP2475889 B1 EP 2475889B1 EP 10750126 A EP10750126 A EP 10750126A EP 2475889 B1 EP2475889 B1 EP 2475889B1
Authority
EP
European Patent Office
Prior art keywords
rotary
outlet opening
rotary piston
piston pump
housing
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
EP10750126.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2475889A2 (de
Inventor
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
Priority to SI201031527T priority Critical patent/SI2475889T1/sl
Priority to PL10750126T priority patent/PL2475889T3/pl
Publication of EP2475889A2 publication Critical patent/EP2475889A2/de
Application granted granted Critical
Publication of EP2475889B1 publication Critical patent/EP2475889B1/de
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
    • F04C2/126—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
    • 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
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet
    • F04C2250/102—Geometry of the inlet or outlet of the outlet

Definitions

  • the invention relates to a rotary piston pump for conveying a fluid medium containing solids, with two rotary pistons with interlocking rotary lobes and each having a rotation axis and an outer periphery, wherein the axes of rotation of the two rotary pistons spaced from each other and are arranged parallel to each other and the outer circumferences of the two rotary pistons partially overlap , 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 each encloses a portion of the outer peripheries of the rotary pistons and wherein the rotary piston pump is formed, the medium in a conveying direction from the inlet to the outlet opening to promote.
  • Rotary lobe pumps belong to the positive displacement pumps and have two rotary lobes with two or more rotary lobes each.
  • the rotary pistons are arranged in a housing, whose inner wall faces the rotary piston and the outer wall of which closes the rotary piston pump to the outside.
  • the housing encloses with its inner wall in each case a portion of the outer peripheries of the rotary pistons.
  • the enclosed by the GeHouseau towandung section is also referred to as enclosing angle.
  • the tips of the rotary lobes may be provided with a coating, preferably a rubber sealing surface, to provide a seal between the lobe wing and housing inner wall and between the intermeshing lobe vanes.
  • the rotary pistons are each rotatably driven in an opposite direction about a rotation axis, wherein through the circular paths on which rotate the rotary vane tips, each an outer periphery of the rotary piston is defined. In the area where the rotary lobes engage, the two outer circumferences of the lobes overlap.
  • Rotary pumps are generally symmetrical in order to allow a reversal of the conveying direction.
  • Rotary pumps of the type mentioned are, for example DE 297 23 984 U1 . DE 34 27 282 A1 . US 2,848,952 . NL 101 62 83 . US 3,126,834 and US 15,221 known. Rotary pumps of this type are also used to convey media containing solids. Through the inlet opening, a fluid medium, usually a liquid in which solids of different types and amounts may be contained, fed into the overlap region of the rotary pistons and further pushed from the rotary vanes to the outlet opening. In this case, media of different viscosity can be promoted.
  • Rotary pumps of the type mentioned have, for example, flow rates of about 3 to 1,000 cubic meters per hour, ie about 50 to 16,667 liters per minute, and pressures up to about 16 bar.
  • Solids contained in the medium are swept with the medium into the spaces between the rotary lobes and transported with the medium in the conveying direction of the rotary lobe pump from the inlet to the outlet.
  • Solids contained in the medium may be, for example, stones, metal parts or other foreign bodies.
  • Rotary lobe pumps are often used in demanding environmental conditions. Typical applications for rotary lobe pumps are, for example, sewage treatment plants, wastewater and wastewater engineering, waste management and recycling technology, paper and pulp industry, rail and port industry, food industry or construction industry. Rotary pumps are u.a. used as a sludge pump, wastewater pump, dirty or hot water pump, sludge pump, feed pump, mobile pump, pump for contaminated media, slurry pump, sewage pump or pump for vinasse and pulp. These operating conditions require a robust, reliable and less sensitive design of rotary lobe pumps.
  • a rotary piston pump for promoting a fluid medium containing solids, which reduces the number of shutdowns and the wear of the rotary piston pump or their components and / or a decrease in the efficiency or delivery pressure of the rotary lobe pump via a longer service life or reduced under challenging operating conditions.
  • the object is achieved by a rotary piston pump, with an ejection extension and outlet opening according to claim 1.
  • the outlet opening is an opening in the housing so that the outlet opening passes through both the inner wall and the outer wall of the housing.
  • the ejection extent is defined as the extent of the outlet opening that occurs on the inner wall of the housing, in a direction that is perpendicular to both axes of rotation and connects these axes of rotation.
  • rotary lobe pumps are used in an operating position in which the axes of rotation of the rotary pistons are aligned horizontally and arranged vertically one above the other.
  • the ejection extension extends in the vertical direction, ie parallel to the plane of the axes of rotation and perpendicular to the axes of rotation.
  • the ejection extent would be in the horizontal direction.
  • the invention is characterized in that the cross section of the outlet opening tapers from the inner wall of the housing to the outer wall of the housing.
  • the cross section of the outlet opening is larger on the inner wall of the housing than the cross section of the outlet opening on the outer wall of the housing.
  • outlet opening in the housing arise between the inner and the outer wall of the housing along the circumference of the outlet opening side surfaces of the outlet opening, which can also be referred to as ejection ramps. At least one of the ejection ramps is inclined in such a way that the outlet opening tapers in the direction of the conveying direction of the rotary piston pump. Such a tapering of the outlet opening in the conveying direction reduces tearing currents and vortices in the area of the outlet opening. As a result, a steering of the solids in trajectories, which prevents or reduces a clamping of the solids between rotary vane tips and housing or between two intermeshing rotary vane, advantageously reinforced.
  • the ejection extent is greater than the distance of the axes of rotation from each other and thus greater than in the solutions shown in the prior art.
  • the portion of the outer circumference, which is encompassed by the inner wall of the housing, is therefore smaller in the region of the outlet opening than in solutions shown in the prior art.
  • the invention is based on the recognition that on the outlet side of existing rotary lobe pumps an outlet flow or vortex formation of the medium prevails, which causes solids at the outlet opening frequently between the rotary lobe tips and the housing or between two interlocking rotary lobes advised and damage, Wear and shutdowns can lead. Due to the preferred design of the ejection extension, the solids are released earlier by the rotary lobes.
  • the life of the rotary piston pump can be extended by the inventive solution and the repair and maintenance costs of the rotary lobe pump can be reduced.
  • the cross section of the ejection extension can be arbitrarily shaped, for example circular or oval.
  • the ejection extent along the entire width of the outlet opening is greater than the distance between the axes of rotation, since even with an ejection strain, which is smaller in sections than the distance between the axes of rotation, the positive effect on the trajectories of the solids decreases ,
  • the outlet opening has a rectangular or square cross-section, in which the ejection extension over the entire width of the outlet opening is substantially constant.
  • the invention is characterized in that the ejection extent is greater than an extent of the inlet opening on the inner wall of the housing in a direction which is parallel to the plane of the axes of rotation and perpendicular to the axes of rotation.
  • the Adapted to flow and pressure conditions adapted formation of the inlet and outlet ports to prevent or reduce the trapping of solids at both the inlet and the outlet opening.
  • a further development form in which, in the operating position of the rotary piston pump, the axes of rotation of the rotary pistons are aligned horizontally and arranged vertically one above the other.
  • the ejection extension runs in the vertical direction.
  • a rectangular or square cross section of the outlet opening is particularly preferred, in which the lower and the upper side surfaces or ejection ramps are inclined in the conveying direction to the central axis of the outlet opening.
  • the width of the outlet opening may be the same on the inner wall of the housing as on the outer wall of the housing, so that there is no inclination of the side surfaces.
  • the invention is preferably developed by the fact that the outlet opening on the outer wall of the housing has an extension which corresponds in a direction which is parallel to the plane of the axes of rotation and perpendicular to the axes of rotation, at most the distance between the axes of rotation. It is particularly preferred that the outlet opening on the outer wall of the housing has an extension in a direction parallel to the plane of the axes of rotation and perpendicular to the axes of rotation runs, is smaller than the distance between the axes of rotation.
  • a further preferred development of the invention is characterized by a pipe connection flange surrounding the outlet opening with a central axis which is arranged offset to a central axis of the outlet opening on the outer wall of the housing. It is particularly preferred that in an operating position of the rotary piston pump, the axes of rotation of the two rotary pistons are aligned horizontally and vertically above one another and the central axis of the Rohran gleichflansches is offset relative to the central axis of the outlet opening on the outer wall of the housing in the vertical direction downwards.
  • the rotary piston pump preferably has a pipe connection flange.
  • the pipe connection flange preferably has connection means to which a pipe or hose to be connected or the like is connected. can be attached.
  • the pipe connection flange preferably surrounds the outlet opening so that the complete cross section of the outlet opening is in fluid communication with the interior of a pipe to be connected.
  • the pipe connection flange is preferably not arranged concentrically to the outlet opening on the outer wall of the housing, but offset. This creates an offset between the outlet opening and the pipe to be connected to the pipe connection flange.
  • This offset can advantageously serve as a barrier to solids and prevent them from being returned to the outlet port or between the rotary vane tips and the housing or between two intermeshing rotary vane vanes after leaving the outlet port.
  • the foreign body sensitivity and the repair and maintenance costs of the rotary lobe pump are further reduced and the life of the rotary lobe pump further increased.
  • the offset between the outlet opening and the pipe to be connected forms an obstacle to solids that have left the outlet and are due to the effect of gravity or due to currents or vortices in the medium in the lower part of a pipe to be connected, so that the solids not or only difficult to get back into the outlet opening.
  • the invention is preferably further developed in that the housing has a base frame with two receptacles and two flanges which can be mounted interchangeably in the receptacles, wherein one of the two flanges is constructed as the outlet flange comprising the outlet opening and the other of the two flanges as the inlet flange comprising the inlet opening.
  • the invention is preferably further developed by the fact that the two flanges and / or the two receptacles are formed such that each of the two flanges can be mounted both in one and in the other receptacle.
  • an optimal conveying direction of the rotary piston pump is determined from the inlet to the outlet opening.
  • a reverse conveying direction is possible in this embodiment of the inlet and outlet ports, but disadvantageous, since there is an increased risk of trapping solids between the rotary vane tips and the housing or between two interlocking rotary lobes.
  • the training according to the invention is therefore intended to construct the housing modular with a base frame having two recesses or receptacles, in each of which a flange can be used.
  • a flange preferably comprises the inlet or the outlet opening and optionally also the tube connection flange surrounding the outlet opening.
  • the two flanges and / or the two receptacles have a geometry which makes it possible to mount each of the two flanges in each of the two receptacles. If both flanges in the Accommodations are releasably fastened, can be reversed by swapping the two flanges and the optimal direction of conveyance. In order to ensure easy handling and thus a quick and easy reversal of the conveying direction, it is particularly preferred if the attachment of the flanges in the exceptions by means of quick release closures.
  • the invention is preferably further developed in that the two receptacles are mirrored to one another at a symmetry surface extending through the base frame.
  • This further development form is particularly preferred because a mirror-image embodiment of the receptacles and preferably also a gel-like design of the outer geometry of the flanges enables a particularly simple replacement of the flanges.
  • the invention is preferably further developed in that the outlet opening has at least one movable adjusting element which is adjustable between a first and a second position such that the conveying direction in an arrangement of the actuating element in the first position of the conveying direction in an arrangement of the actuating element in the second Position is opposite.
  • the invention is further preferably further developed in that the inlet opening has at least one movable actuating element which is adjustable between a first and a second position such that the conveying direction in an arrangement of the actuating element in the first position of the conveying direction in an arrangement of the actuating element in the second position is opposite.
  • the invention is preferably further developed in that the actuating element of the outlet opening has a pressure application surface, which is configured such that the actuating element in the first position at a first pressure of the medium at the outlet opening and in the second at a second pressure of the medium at the outlet Position is arranged, wherein preferably the second pressure is a negative pressure.
  • a further preferred embodiment provides a pressure sensor which is designed to detect the pressure of the medium at the outlet opening and is coupled to the actuating element of the outlet opening such that the actuating element is in the first position and at a first pressure of the medium at the outlet opening a second pressure of the medium at the outlet opening in the second position is arranged.
  • the invention is preferably further developed in that the actuating element of the inlet opening has a pressure application surface which is designed such that the actuating element is in the second position at a first pressure of the medium at the inlet opening and at the second inlet pressure of the medium first position is arranged, wherein preferably the second pressure is a negative pressure.
  • a further preferred embodiment provides a pressure sensor, which is designed to detect the pressure of the medium at the inlet opening and is coupled to the actuator of the inlet opening, that the actuator at a first pressure of the medium at the inlet opening in the second position and at a second pressure of the medium at the inlet opening in the first position is arranged. It is particularly preferred if the pressure sensor for detecting the pressure of the medium at the inlet opening is identical to the pressure sensor for detecting the pressure of the medium at the outlet opening.
  • the invention is preferably developed by at least one of the adjusting elements being coupled to at least one of the rotary pistons such that the adjusting element or the adjusting elements are arranged in the first position in a first rotational direction of the rotary piston and in the second position in a second rotational direction of the rotary piston is or are.
  • the invention is preferably further developed in that at least one of the actuating element is coupled to a switching device for adjusting the conveying direction of the rotary piston pump, that the actuating element or the adjusting elements in a first conveying direction of the rotary piston pump in the first position and in a second conveying direction of the rotary piston pump in the second position is arranged or are.
  • Fig. 1 shows the state of the art with a rotary piston pump 100 with two rotary pistons 110, 120 and a housing 130.
  • the two rotary pistons 110, 120 each have a rotation axis 111, 121 and four rotary wing 112, 122 on.
  • the housing 130 has an inner wall 131 which surrounds the outer peripheries of the rotary pistons 110, 120 in sections, and an outer wall 132 and pedestals 133, 134 which close off the rotary pump.
  • the housing 130 has an inlet opening 150 and an outlet opening 140.
  • the outlet opening 140 is surrounded by a pipe connection flange 143, to which a pipe 160 having an upper wall 161, a lower wall 162 and a central axis 163 is connected.
  • the central axis 163 of the pipeline 160 corresponds to the central axis of the pipe connection flange 143.
  • the inlet opening 150 is surrounded by a further pipe connection flange 153, to which a further pipe 170 with an upper wall 171, a lower wall 172 and a central axis 173 is connected.
  • the rotary pistons 110, 120 rotate in the directions of rotation 113, 123.
  • the inlet opening 150 and the outlet opening 140 taper in each case toward the inner wall 131 of the housing and are mirror-symmetrical to the mirror surface SF , Between the inner wall 131 and the outer wall 132, the inlet and outlet openings form side surfaces 141, 142, 151, 152.
  • the enclosure angle of the housing is both in the region of the inlet and in the region of the outlet opening alpha plus delta alpha, ie, the inner wall of the housing encloses each a portion of the outer periphery of a rotary piston of 2 x alpha plus 2 x delta alpha.
  • Such a mirror-symmetrical design of the inlet and the outlet opening are advantageous in terms of a possible switching the conveying direction of the rotary lobe pump.
  • this prior art solution is further to be improved in terms of foreign body sensitivity, cutoff frequency, pressure loss, wear, life, repair and maintenance costs.
  • Fig. 2 and 3 show two embodiments of inventive rotary lobe pumps. Functionally identical or similar components are denoted by the same reference numerals plus 100 ( Fig. 2 ) or plus 200 ( Fig. 3 ) across from Fig. 1 designated.
  • the following is mainly due to the differences of the rotary lobe pump according to the invention Fig. 2 and 3 in relation to the rotary piston pump in the prior art Fig. 1 as well as the differences between the two variants of the invention in the Fig. 2 and 3 received.
  • the Fig. 2 and 3 differ from that in the prior art according to Fig. 1
  • the outlet openings 240, 340 are in the two variants according to Fig. 2 and 3 the same education.
  • Fig. 2 and 3 differ in that the inlet opening 250 according to Fig. 2 the inlet opening 150 according to the prior art according to Fig. 1 corresponds, whereas Fig. 3 shows an inlet opening 350, which differs from both the prior art Fig. 1 as well as of the inventive variant of Fig. 2 different.
  • the different design of the inlet openings 250, 350 in the Fig. 2 and 3 is particularly clear by the different inflow behavior of the medium, which is shown schematically with the arrows in the region of the inlet openings 250, 350.
  • the medium is guided centrally between the two rotary pistons 210, 220.
  • the medium flows over the entire cross section of the inlet opening 350 to a wider area of the two rotary pistons 310, 320.
  • the enclosure angle of the inner wall 231, 331 of the housing is on the outlet side of the rotary pump at the top and bottom of each beta minus delta beta.
  • the Expulsion extent of the outlet opening 240, 340 is thus in a direction which is parallel to the plane of the axes of rotation 211, 221, 311, 321 and perpendicular to the axes of rotation 211, 221, 311, 321, greater than the distance between the axes of rotation 211, 221, 311, 321.
  • the lower side surface or ejection ramp 242, 342 is more inclined than the upper side surface 241, 241.
  • the upper Ausscherampe 241, 341 of the outlet opening 240, 340 on the outer wall 232, 332 of the housing 230, 330 at the height of the axis of rotation 211, 311 of the upper rotary piston 210, 310 terminates and the lower Ausschrampe 242, 342 of Outlet opening 240, 340 on the outer wall 232, 332 of the housing 230, 330 ends only at an angle of beta plus delta rho.
  • the trajectories of the upper rotary piston 210th , 310 conveyed solids b also extend in an arc from the outlet opening 240, 340 in the interior of the connected pipe 260, 360.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP10750126.4A 2009-09-08 2010-09-08 Drehkolbenpumpe Active EP2475889B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201031527T SI2475889T1 (sl) 2009-09-08 2010-09-08 Rotacijska batna črpalka
PL10750126T PL2475889T3 (pl) 2009-09-08 2010-09-08 Pompa z tłokami obrotowymi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009012158U DE202009012158U1 (de) 2009-09-08 2009-09-08 Drehkolbenpumpe
PCT/EP2010/063179 WO2011029847A2 (de) 2009-09-08 2010-09-08 Drehkolbenpumpe

Publications (2)

Publication Number Publication Date
EP2475889A2 EP2475889A2 (de) 2012-07-18
EP2475889B1 true EP2475889B1 (de) 2017-05-31

Family

ID=43536426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10750126.4A Active EP2475889B1 (de) 2009-09-08 2010-09-08 Drehkolbenpumpe

Country Status (12)

Country Link
US (1) US9732749B2 (pl)
EP (1) EP2475889B1 (pl)
JP (2) JP2013504010A (pl)
CN (1) CN102625880B (pl)
BR (1) BR112012005192B1 (pl)
DE (1) DE202009012158U1 (pl)
DK (1) DK2475889T3 (pl)
ES (1) ES2634691T3 (pl)
PL (1) PL2475889T3 (pl)
PT (1) PT2475889T (pl)
SI (1) SI2475889T1 (pl)
WO (1) WO2011029847A2 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018107141U1 (de) 2018-12-13 2020-03-18 Vogelsang Gmbh & Co. Kg Drehkolbenpumpe mit innenliegender Lagerung

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DE202009012158U1 (de) 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe
DE202010011626U1 (de) 2010-08-20 2010-10-21 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe
DE102012206699B4 (de) * 2012-04-24 2020-12-10 Robert Bosch Gmbh Zahnradmaschine mit wannenartiger Vertiefung an der Außenoberfläche des Gehäuses
DE102012008527B3 (de) 2012-05-02 2013-07-25 Netzsch Pumpen & Systeme Gmbh Drehkolbenpumpe mit optimierten ein-und auslässen
EP2971774B1 (en) * 2013-03-15 2021-01-27 Lobepro, Inc. Piston with replaceable and/or adjustable surfaces
DE102014000392A1 (de) * 2014-01-13 2015-07-16 Schöning Gmbh Gleitringdichtungssystem, Dosiervorrichtung mit Gleitringdichtungssystem sowie dazugehöriges Montageverfahren einer Dosiervorrichtung
CN104454512B (zh) * 2014-11-04 2016-08-24 中国农业大学 一种多联凸轮泵
CN106194762B (zh) * 2016-09-27 2018-12-25 天津海辰华环保科技股份有限公司 旋转钢管泥浆泵
GB2564381B (en) * 2017-06-12 2020-07-01 Edwards Ltd Twin shaft pumps and a method of pumping
DE202017104786U1 (de) * 2017-08-09 2018-11-12 Vogelsang Gmbh & Co. Kg Verteilervorrichtung für feststoffhaltige Flüssigkeiten
KR102172435B1 (ko) * 2018-09-07 2020-11-02 한국생산기술연구원 회전자가 트위스트 된 용적식 수차 장치
DE202022104656U1 (de) 2022-08-17 2023-11-20 Vogelsang Gmbh & Co. Kg Pumpe zur Förderung eines Fluides

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018107141U1 (de) 2018-12-13 2020-03-18 Vogelsang Gmbh & Co. Kg Drehkolbenpumpe mit innenliegender Lagerung
WO2020120746A1 (de) 2018-12-13 2020-06-18 Vogelsang Gmbh & Co. Kg Drehkolbenpumpe mit innenliegender lagerung

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CN102625880A (zh) 2012-08-01
BR112012005192A2 (pt) 2016-03-08
BR112012005192B1 (pt) 2020-08-18
US9732749B2 (en) 2017-08-15
WO2011029847A3 (de) 2012-03-15
SI2475889T1 (sl) 2017-10-30
PT2475889T (pt) 2017-08-23
JP2013504010A (ja) 2013-02-04
EP2475889A2 (de) 2012-07-18
DK2475889T3 (en) 2017-07-31
JP2015078700A (ja) 2015-04-23
DE202009012158U1 (de) 2011-02-03
JP6029696B2 (ja) 2016-11-24
ES2634691T3 (es) 2017-09-28
US20120207638A1 (en) 2012-08-16
PL2475889T3 (pl) 2017-10-31
WO2011029847A2 (de) 2011-03-17
CN102625880B (zh) 2016-01-13

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