EP3224478B1 - Pompe à pistons rotatifs, procédé de fixation de pistons rotatifs d'une pompe à pistons rotatifs et procédé de démontage de pistons rotatifs d'une pompe à pistons rotatifs - Google Patents

Pompe à pistons rotatifs, procédé de fixation de pistons rotatifs d'une pompe à pistons rotatifs et procédé de démontage de pistons rotatifs d'une pompe à pistons rotatifs Download PDF

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Publication number
EP3224478B1
EP3224478B1 EP15831040.9A EP15831040A EP3224478B1 EP 3224478 B1 EP3224478 B1 EP 3224478B1 EP 15831040 A EP15831040 A EP 15831040A EP 3224478 B1 EP3224478 B1 EP 3224478B1
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EP
European Patent Office
Prior art keywords
drive shaft
rotary piston
rotary
end region
pump
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
EP15831040.9A
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German (de)
English (en)
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EP3224478A1 (fr
Inventor
Stefan Weigl
Franz Kneidl
Thomas Schmitt
Achim Dehnz
Dominik Hindera
Mathias Obermaier
Markus Rosam
Erwin Weber
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
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Publication date
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Publication of EP3224478A1 publication Critical patent/EP3224478A1/fr
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Publication of EP3224478B1 publication Critical patent/EP3224478B1/fr
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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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • 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
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
    • 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
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/70—Disassembly methods

Definitions

  • the present invention relates to a rotary piston pump, a method for fixing rotary piston of an aforementioned rotary piston pump or method for disassembling rotary piston of an aforementioned rotary piston pump according to the features of the preamble of claims 1, 7 and 15.
  • the present application relates to the fixation of rotary piston of a rotary piston pump on the respective drive shaft.
  • Rotary lobe pumps are self-priming or conditionally self-priming, valveless, positive positive displacement pumps with rotating lobes.
  • rotary lobe pumps comprise at least two oppositely revolving two- or multi-leaf rotary pistons whose drive shafts comprise seals.
  • rotary lobe pumps have two drive shafts for two rotary lobes.
  • the drive shafts are provided at their arranged in the pump room end with screw for attaching the rotary piston.
  • the drive shafts are each formed in one piece and remain during assembly or disassembly of the rotary piston in the pump housing. It is provided that one of the drive shafts is connected via a coupling to the drive and in the uncoupled state is freely rotatable relative to the other drive shaft.
  • DE 102012003066 B3 describes a method and apparatus for fixing and synchronizing rotary pistons of a rotary lobe pump.
  • the rotary pistons are introduced in the pump room.
  • a stub shaft of each rotary piston is pushed by the pump rear wall on the respective drive shaft.
  • the rotors are aligned with a template in the pump room and synchronized.
  • the template is releasably fixed to the pump housing in this alignment step.
  • the stub shafts of the aligned rotary pistons are each by means of a Clamping device frictionally connected to the respective drive shaft outside the pump room.
  • DE 102013101185 A1 discloses a rotary pump, wherein the seals are arranged on a shaft extension of the respective rotary piston and a sliding ring per seal is provided with a locking device having a plurality of fixing positions.
  • the seal with the locking device is placed on the tubular shaft extension and the shaft extension of each rotary piston is pushed by the pump rear wall to the respective drive shaft.
  • a securing element is positively placed in axial grooves of the locking device in connection.
  • the shaft extension and thus the rotary piston is non-positively connected via a clamping device with the respective drive shaft outside the pump chamber.
  • EP 0577064 A1 describes a rotary pump for conveying liquid food.
  • the two rotary pistons each have a receptacle for the respective drive shaft.
  • the end region of the respective drive shaft is arranged and fixed in the receptacle of the respective rotary piston.
  • JP S61 149615 A discloses the attachment of a rotating body to a rotating shaft. Here, special processing on the rotating body is necessary. There is formed a female threaded portion and a tapered hole continued at an end portion of the rotary shaft, and a fastener screw having a male threaded portion and a tapered portion therein can be screwed / fitted therein.
  • the document DE 10 2009 029296 A1 describes a press connection of a shaft with a drive element or driven element pressed thereon.
  • the shaft has at least partially an axially extending recess, through which it is formed in this area as a hollow shaft.
  • the aim of the invention is to divide the strains and resulting deformations more uniformly between the shaft and the drive or driven element pressed thereon.
  • the object of the invention is to easily and quickly fix the rotary pistons of a rotary pump to the respective drive shaft, so that torques and axial forces are transmitted without play from the drive shaft in the rotary piston.
  • the invention relates to a rotary lobe pump with at least two arranged in a pump space to drive shafts, in opposite directions revolving rotary piston. There is always a contact between the rotary pistons and a pump housing surrounding the pump chamber, wherein pump chambers are formed between the rotary pistons and the pump housing.
  • the product to be pumped is drawn in through the pump chambers, conveyed by the rotary lobe pump and ejected on the opposite side of the pump.
  • a diameter of the drive shafts can be elastically expanded in the end region.
  • the rotary pistons are arranged non-rotatably on the respective drive shafts, there is a frictional connection between the respective receiver formed of the rotary piston and the end portion of the respective drive shaft.
  • a backlash-free power transmission can take place.
  • this frictional engagement is, however, canceled.
  • a frictional and positive connection between the respective receptacle of the rotary piston and the end region of the respective drive shaft is formed.
  • this frictional and form-fitting is, however, canceled.
  • the fixing of rotary pistons to drive shafts of an aforementioned rotary pump takes place in the following method steps:
  • the rotary pistons are pushed onto the respective drive shafts, so that the end region of the respective drive shafts is arranged in the receptacle of the respective rotary piston.
  • a game is formed between the drive shaft and the receptacle, so that the rotary pistons can be arbitrarily aligned with the respective drive shafts.
  • the alignment of the pushed onto the drive shafts rotary piston takes place at the same time by means of a template, analogous to that in the DE 102012003066 described prior art.
  • the end portion of the drive shaft and / or the receptacle of the rotary piston is associated with a clamping and / or clamping device for fixing the rotary piston by means of frictional engagement on the respective drive shaft.
  • a clamping and / or clamping device for fixing the rotary piston by means of frictional engagement on the respective drive shaft.
  • the clamping and / or clamping device of the rotary piston so fixed to the respective drive shaft, that torques and axial forces are transmitted without play from the drive shaft in the rotary piston.
  • this operative connection is canceled, so that no transmission of the torques and axial forces from the drive shaft into the rotary piston takes place.
  • the clamping of the rotary piston with the drive shaft can be done in various ways. It can, for example, mechanical elements are used in the drive shaft or hydraulic and / or pneumatic elements are installed.
  • the clamping and / or clamping device comprises size-variable hydraulic and / or pneumatic elements.
  • a suitable hydraulic fluid and / or a suitable gas into the clamping and / or clamping device, and by pressurizing the fluid used, the outer diameter of the drive shaft is expanded in the end region arranged in the pump chamber within the receptacle.
  • the outer diameter of the end portion of the drive shaft is reduced, so that he now again Output outer diameter along the longitudinal axis of the drive shaft corresponds and thus again a game between the end portion of the drive shaft and the receptacle of the rotary piston is formed.
  • the clamping and / or clamping device comprises as mechanical elements so-called cone elements.
  • cone elements By moving the cone elements in a first direction of movement in the region of the receptacle of the rotary piston and / or by moving the cone elements within the arranged in the pump chamber within the receptacle of the rotary piston end portion of the drive shaft, the outer diameter of the end portion is widened or enlarged, so that the end portion of the drive shaft fixed is fixed in the receptacle of the rotary piston.
  • the drive shafts are each formed as hollow shafts with a continuous cavity along their respective longitudinal axis.
  • the rotary pistons each have on the side surface, which is assigned to the projecting into the pump space in the free end of the drive shaft, a receptacle for the arranged in the pump chamber end portion of the respective drive shafts.
  • the cavity in the end region of the respective drive shaft arranged in the pump chamber has an expanded cross-section, that is to say the drive shafts are each designed to be thinned in the region of the rotary piston seat.
  • the respective cavity in the pump chamber arranged in the end region of the respective drive shaft has an expanded cross-section with at least a second inner diameter which is greater than the first inner diameter of the continuous cavity along the longitudinal axis of the drive shaft.
  • the drive shafts of the rotary lobe pump preferably each have a first outer diameter along their respective longitudinal axis. This first outer diameter can be expanded or enlarged in the end region of the drive shafts arranged in the pump space by means of the clamping and / or clamping device, so that the end region of the drive shafts is respectively firmly fixed in the respective receptacle of the rotary piston, in particular braced or jammed.
  • a tool for acting on the clamping and / or clamping device can be introduced through the continuous cavity along the respective longitudinal axis of the drive shafts, in particular a tool for setting or releasing the clamping and / or clamping device.
  • a tool is introduced through the cavity along the respective longitudinal axis of the respective drive shaft for maintenance work, with which the fixation of the rotary piston is released at the respective drive shaft.
  • the tool is preferably removed from the cavity, but may also be during maintenance remain in the cavity, unless this interferes with the further steps.
  • the rotary pistons and the respective sealing elements can now be removed from the respective drive shaft and fixed again after completion of the maintenance work by means of the tool.
  • the clamping and / or clamping device is adjusted by means of the introduced through the cavity tool such that the outer diameter is expanded or increased in the end region of the drive shaft.
  • the clamping and / or clamping device is released by means of the introduced through the cavity tool, so that the outer diameter in the end region again corresponds to the first outer diameter along the longitudinal axis of the drive shaft and thus again a game between the end portion of the drive shaft and the receptacle of the rotary piston is trained.
  • the method for assembling or disassembling rotary pistons of a rotary piston pump may comprise, as an alternative or in addition to the described features, one or more features and / or properties of the device described above.
  • the device may alternatively or additionally comprise one or more features and / or properties of the described method.
  • a particular advantage over the prior art is that the pistons need not be fastened with a plurality of screws on the back of the pump housing, but only a fixation on a fixing point is necessary and no screws or other elements must be installed in the pump room.
  • FIG. 1 shows a schematic view of a rotary piston pump 1 with two rotary pistons 8, 9 according to the known prior art.
  • a motor 3 is arranged on a machine stand 2.
  • This drives two drive shafts 6,7 in opposite directions.
  • Rotary pistons 8, 9, which are driven via the drive shafts 6, 7 and rotate simultaneously and in opposite directions about the axes of the drive shafts 6, 7, are arranged on the drive shafts in a pump housing 4.
  • a pump housing 4 During the rotation of the rotary pistons 8, 9, there is always a contact between the rotary piston 8, 9 and the pump housing 4 of the rotary lobe pump 1.
  • the product to be conveyed is sucked, conveyed in the transport direction TR by the rotary lobe pump 1 and on the ejected opposite pump side.
  • seals (not shown) to the drive shafts 6, 7 are arranged.
  • FIG. 2 shows a first partial view of a first embodiment of an inventively designed rotary piston pump 30 with an attachment of a rotary piston 24 on a specially designed drive shaft 10
  • FIG. 3 shows a sectional view of the first embodiment of the attachment of a rotary piston 24 on a drive shaft 10 according to FIG. 2 along a section line AA.
  • an installation space 20 for mechanical seals 22 or other suitable sealing elements for sealing the pump chamber from the environment is provided.
  • the rotary piston 24 is arranged on the drive side of the drive shaft 10 opposite end portion 12 of the drive shaft 10.
  • a receptacle 25 with a circular cross-section for receiving the drive shaft 10 is provided on the rotary piston 24.
  • the drive shaft 10 is formed as a so-called hollow shaft 11.
  • a first cavity 13 extends along the longitudinal axis L of the drive shaft 10.
  • the hollow shaft 11 has an outer diameter d1 over its entire length. Furthermore, the hollow shaft 11 has in regions a first inner diameter d2, which defines the first cavity 13.
  • the drive shaft 10 is configured in the end region 12, that is, in the region in which the rotary piston 24 is seated on the drive shaft 10 via the receptacle 25, thinned.
  • a second, widened cavity 14 is provided with a second inner diameter d3.
  • the outer diameter d1 of the drive shaft 10 is greater than the second inner diameter d3 of the widened second cavity 14 in the end region 12 of the drive shaft 10, which is in turn greater than the first inner diameter d2 of the first cavity 13 along the longitudinal axis L of the drive shaft 10.
  • the wall thickness W12 in this area is less than the general wall thickness W10 of the drive shaft 10.
  • the receptacle 25 of the rotary piston 24 has an inner diameter which largely corresponds to the outer diameter d1 of the drive shaft 10, in particular the inner diameter of the receptacle 25 is slightly larger than the outer diameter d1, so that the rotary piston 24 with little play on the end portion 12 of the drive shaft 10th seated.
  • the bracing of the rotary piston 24 at the end portion 12 of the drive shaft 10 can be done in various ways. Examples are the FIGS. 2 to 5 shown.
  • tapered elements can be inserted into the drive shaft 10 (see FIG FIGS. 4 and 5 ), or hydraulic and / or pneumatic elements (see FIGS. 2 and 3 ) be used.
  • the rotary piston 24 is closed on the side facing away from the drive shaft 10 side 26.
  • the rotary piston 24 is pushed onto the drive shaft 10, so that the end portion 12 of the drive shaft 10 is at least partially received in the receptacle 25 of the rotary piston 24.
  • the installation of the rotary piston 24 in the rotary piston pump 30 according to the invention is carried out according to a preferred embodiment of the invention in the following steps: First, a respective mechanical seal 22 is pushed onto the drive shafts 10, then a respective rotary piston 24 is slid onto the drive shafts 10. The rotary pistons 24 are aligned. For example, there is a template analogous to that in the DE 102012003066 B3 and in the DE 102013101185 A1 described prior art use. Subsequently, a tool is introduced through the cavity 13 from the drive side of the drive shafts 10 forth and by tightening / tightening the clamping device 15, the rotary piston 24 are fixed to the respective drive shaft 10.
  • the clamping device 15 is arranged in the receptacle 25 of the rotary piston 24.
  • the clamping device 15 is inserted into the second, enlarged cavity 14 of the end portion 12 of the drive shaft 10.
  • the clamping device 15 is arranged in the second, enlarged cavity 14 of the end region 12 of the drive shaft 10, so that the rotary piston 24 is simultaneously pushed onto the drive shaft 10 and clamping device 15.
  • FIG. 4 shows a second embodiment of a fastening device for fastening a rotary piston (not shown) on a drive shaft 10b. It is provided here that the widened cavity 14b widens conically in the end region 12b in the direction of the rotary piston.
  • the clamping means 15b is formed as a cone or truncated cone 35, wherein the cross section of the cone or truncated cone 35 decreases away from the rotary piston.
  • the cone or truncated cone 35 has in the region of its bottom surface 36 an outer diameter dB which is at least slightly larger than the largest inner diameter d3max of the enlarged cavity 14b.
  • FIG. 5 shows a third embodiment of a fastening device for fastening a rotary piston 24c on a drive shaft 10c of a rotary piston pump 30c.
  • the clamping means 15c is formed from a cone element 40 installed in the drive shaft 10c and a corresponding cone receptacle 28 arranged within the receptacle 25c of the rotary piston 24c.
  • the rotary piston 24c is further used by means of a suitable tool on the drive shaft 10c.
  • the truncated cone 40 is thereby inserted further into the cone receptacle 28. This leads to an at least partial spreading of the cone receptacle 28.
  • the extension of the outer diameter d1 causes the drive shaft 10c in this area and thus the Drive shaft 10c in the receptacle 25c of the rotary piston 24c (see also FIG. 2 ) braced.

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

Claims (12)

  1. Pompe à pistons rotatifs (30) avec au moins deux pistons rotatifs (24) tournant dans des sens opposés et disposés sur des arbres d'entraînement (10) dans un espace de pompe, dans laquelle les pistons rotatifs (24) comportent un logement (25) et dans laquelle l'arbre d'entraînement (10) respectif est disposée et fixée avec une région d'extrémité (12) dans le logement (25) du piston rotatif (24) respectif, caractérisée en ce qu'un diamètre des arbres d'entraînement (10) peut être élargi élastiquement dans la région d'extrémité (12) et en ce que dans un état de fonctionnement dans lequel les pistons rotatifs (24) sont disposés sur les arbres d'entraînement (10) respectifs, une liaison par friction ou une liaison par friction et complémentarité de forme est réalisée entre le logement (25) respectif du piston rotatif (24) et la région d'extrémité (12) de l'arbre d'entraînement (10) respectif, de telle façon que la transmission de force a lieu dans jeu, les arbres d'entraînement (10) étant respectivement formés comme des arbres creux (11) avec un espace creux traversant (13) présentant un premier diamètre intérieur (d2) le long de leur axe longitudinal (L) respectif, en ce que l'espace creux respectif présente une section transversale élargie avec au moins un deuxième diamètre intérieur (d3) dans la région d'extrémité (12) de l'arbre d'entraînement (10) respectif disposée dans l'espace de pompe, l'au moins un deuxième diamètre intérieur (d3) étant supérieur au premier diamètre intérieur (d2).
  2. Pompe à pistons rotatifs (30) selon la revendication 1, dans laquelle un dispositif de tension et/ou de serrage pour la fixation des pistons rotatifs (24) au moyen d'une liaison par friction sur l'arbres d'entraînement (10) respectif est attribué à la région d'extrémité (12) de l'arbre d'entraînement (10) et/ou au logement (25) du piston rotatif (24).
  3. Pompe à pistons rotatifs (30) selon la revendication 2, dans laquelle le dispositif de tension et/ou de serrage comporte des éléments hydrauliques et/ou pneumatiques de taille variable, ou dans laquelle le dispositif de tension et/ou de serrage comporte des éléments mécaniques (35, 40).
  4. Pompe à pistons rotatifs (30) selon l'une des revendications précédentes, dans laquelle les arbres d'entraînement (10) présentent respectivement un premier diamètre extérieur (d1) le long de leur axe longitudinal (L) respectif, dans laquelle le premier diamètre extérieur (d1) peut être élargi et/ou agrandi dans la région d'extrémité (12) disposée dans l'espace de pompe à l'aide du dispositif de tension et/ou de serrage.
  5. Pompe à pistons rotatifs (30) selon l'une des revendications précédentes, dans laquelle un outil pour la précontrainte du dispositif de tension et/ou de serrage peut être inséré à travers l'espace creux traversant (13) le long de l'axe longitudinal (L) respectif des arbres d'entraînement (10).
  6. Procédé pour la fixation d'au moins deux pistons rotatifs (24) sur des arbres d'entraînement (10) attribués respectivement, dans l'espace de pompe d'une pompe à pistons rotatifs (30), caractérisé par les étapes de procédé suivantes :
    - glissement des pistons rotatifs (24) sur une région d'extrémité libre (12) de l'arbre d'entraînement (10) respectif disposée dans l'espace de pompe ;
    - orientation des pistons rotatifs (24) sur les arbres d'entraînement (10) respectifs ;
    - élargissement de la région d'extrémité (12) des arbres d'entraînement (10) pour réaliser une liaison par friction entre un logement (25) du piston rotatif (24) et la région d'extrémité (12) de l'arbre d'entraînement (10) pour la fixation du piston rotatif (24),
    - où l'élargissement de la région d'extrémité (12) est réalisé à l'aide d'un outil inséré à travers un espace creux (13) le long de l'axe longitudinal (L) respectif de l'arbre d'entraînement (10) respectif.
  7. Procédé selon la revendication 6, dans lequel l'élargissement de la région d'extrémité (12) de l'arbre d'entraînement (10) est réalisé à l'aide d'un dispositif de tension et/ou de serrage attribué à la région d'extrémité (12) de l'arbre d'entraînement (10) et/ou au logement (25) du piston rotatif (24).
  8. Procédé selon la revendication 7, dans lequel le dispositif de tension et/ou de serrage comporte des éléments hydrauliques et/ou pneumatiques, dans lequel la région d'extrémité (12) de l'arbre d'entraînement (10) est élargie à l'intérieur du logement (25) du piston rotatif (24) en introduisant un liquide hydraulique approprié et/ou un gaz approprié dans le dispositif de tension et/ou de serrage.
  9. Procédé selon la revendication 8, dans lequel le dispositif de tension et/ou de serrage comporte des éléments mécaniques sous la forme d'éléments coniques (35, 40), dans lequel la région d'extrémité (12) de l'arbre d'entraînement (10) est élargie en déplaçant les éléments coniques (35, 40) dans la région du logement (25) du piston rotatif (24) et/ou à l'intérieur de la région d'extrémité (12) de l'arbre d'entraînement (10) disposée dans l'espace de pompe à l'intérieur du logement (25) du piston rotatif (24).
  10. Procédé selon l'une des revendications 6 à 9, dans lequel le réglage du dispositif de tension et/ou de serrage permet de fixer le piston rotatif (24) sur l'arbre d'entraînement (10) respectif, de telle façon que des couples de rotation et des forces axiales peuvent être transmis sans jeu de l'arbre d'entraînement (10) au piston rotatif (24).
  11. Procédé selon l'une des revendications 6 à 10, dans lequel le dispositif de tension et/ou de serrage peut être réglé à l'aide d'un outil, de telle façon qu'un diamètre extérieur (d1) de la région d'extrémité (12) de l'arbre d'entraînement (10) respectif disposée dans l'espace de pompe est élargi à l'intérieur d'un logement (25) du piston rotatif (24) au moyen du dispositif de tension et/ou de serrage, et que la région d'extrémité (12) de l'arbre d'entraînement (10) est bloquée de façon amovible à l'intérieur d'un logement (25) du piston rotatif (24).
  12. Procédé pour le démontage d'au moins deux pistons rotatifs (24) des arbres d'entraînement (10) respectivement attribués, lesquels tournent dans des sens opposés, dans l'espace de pompe d'une pompe à pistons rotatifs (30) selon l'une des revendications 1 à 6, caractérisé par les étapes de procédé suivantes :
    - suppression de la liaison par friction entre le logement (25) du piston rotatif (24) et la région d'extrémité (12) de l'arbre d'entraînement (10) en réduisant le diamètre extérieur de la région d'extrémité (12) de l'arbre d'entraînement (10),
    - où la suppression de la liaison par friction est réalisée à l'aide d'un outil inséré à travers un espace creux (13) le long de l'axe longitudinal (L) respectif de l'arbre d'entraînement (10) respectif, et
    - séparation du piston rotatif (24) d'avec l'arbre d'entraînement (10) respectif.
EP15831040.9A 2014-11-24 2015-11-20 Pompe à pistons rotatifs, procédé de fixation de pistons rotatifs d'une pompe à pistons rotatifs et procédé de démontage de pistons rotatifs d'une pompe à pistons rotatifs Active EP3224478B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014117166.7A DE102014117166B4 (de) 2014-11-24 2014-11-24 Drehkolbenpumpe, verfahren zur fixierung von drehkolben einer drehkolbenpumpe und verfahren zur demontage von drehkolben einer drehkolbenpumpe
PCT/DE2015/000552 WO2016082814A1 (fr) 2014-11-24 2015-11-20 Pompe à pistons rotatifs, procédé de fixation de pistons rotatifs d'une pompe à pistons rotatifs et procédé de démontage de pistons rotatifs d'une pompe à pistons rotatifs

Publications (2)

Publication Number Publication Date
EP3224478A1 EP3224478A1 (fr) 2017-10-04
EP3224478B1 true EP3224478B1 (fr) 2018-10-31

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Application Number Title Priority Date Filing Date
EP15831040.9A Active EP3224478B1 (fr) 2014-11-24 2015-11-20 Pompe à pistons rotatifs, procédé de fixation de pistons rotatifs d'une pompe à pistons rotatifs et procédé de démontage de pistons rotatifs d'une pompe à pistons rotatifs

Country Status (8)

Country Link
US (1) US10539136B2 (fr)
EP (1) EP3224478B1 (fr)
JP (1) JP6564458B2 (fr)
KR (1) KR20170074937A (fr)
CN (1) CN107002669B (fr)
DE (1) DE102014117166B4 (fr)
RU (1) RU2017122217A (fr)
WO (1) WO2016082814A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016106107U1 (de) * 2016-10-31 2018-02-01 Hugo Vogelsang Maschinenbau Gmbh Drehkolbenpumpe mit Sperrkammerdichtung
DE102017007832A1 (de) 2017-08-22 2019-02-28 Pumpenfabrik Wangen Gmbh Verfahren zur Herstellung eines Drehkolbens für eine Schraubenspindelpumpe
FR3093140B1 (fr) * 2019-02-26 2022-05-06 Mouvex Pompe volumétrique à piston excentré

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Also Published As

Publication number Publication date
RU2017122217A (ru) 2018-12-26
DE102014117166B4 (de) 2016-07-07
US20170306949A1 (en) 2017-10-26
CN107002669B (zh) 2019-10-11
DE102014117166A1 (de) 2016-05-25
EP3224478A1 (fr) 2017-10-04
JP6564458B2 (ja) 2019-08-21
WO2016082814A1 (fr) 2016-06-02
CN107002669A (zh) 2017-08-01
RU2017122217A3 (fr) 2018-12-26
JP2018500493A (ja) 2018-01-11
US10539136B2 (en) 2020-01-21
KR20170074937A (ko) 2017-06-30

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