EP2176552B1 - Pompe à vis sans fin excentrique à stator segmenté - Google Patents

Pompe à vis sans fin excentrique à stator segmenté Download PDF

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Publication number
EP2176552B1
EP2176552B1 EP08785517A EP08785517A EP2176552B1 EP 2176552 B1 EP2176552 B1 EP 2176552B1 EP 08785517 A EP08785517 A EP 08785517A EP 08785517 A EP08785517 A EP 08785517A EP 2176552 B1 EP2176552 B1 EP 2176552B1
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EP
European Patent Office
Prior art keywords
stator
progressive cavity
cavity pump
pump according
jacket
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
EP08785517A
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German (de)
English (en)
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EP2176552A1 (fr
Inventor
Denise LÖKER
Michael Sobolewski
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.)
Seepex GmbH
Original Assignee
Seepex 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
Priority claimed from DE102008021920A external-priority patent/DE102008021920A1/de
Application filed by Seepex GmbH filed Critical Seepex GmbH
Priority to PL08785517T priority Critical patent/PL2176552T3/pl
Publication of EP2176552A1 publication Critical patent/EP2176552A1/fr
Application granted granted Critical
Publication of EP2176552B1 publication Critical patent/EP2176552B1/fr
Active 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
    • 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
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member

Definitions

  • the invention relates to an eccentric screw pump with at least one stator made of an elastic material and a rotor mounted in the stator, wherein the stator is at least partially surrounded by a stator casing or stator housing.
  • the rotor is regularly connected to the drive or the drive shaft via at least one coupling rod, which is also referred to as a cardan shaft.
  • the pump has a suction housing and a connection piece, wherein the stator is connected at one end to a connection flange of the suction housing and the other end to a connection flange of the connection piece.
  • Elastic material in the context of the invention means in particular an elastomer, e.g. a (synthetic) rubber or a rubber mixture.
  • composites of an elastomer or other material, e.g. Metal includes.
  • the elastic stator is formed into a stator jacket of e.g. Metal is vulcanised.
  • the elastomeric stators are subject to wear during operation, so that at regular intervals maintenance or a stator replacement is required.
  • the stators are often replaced with their molded stator covers.
  • stator For cost reasons and also for reasons of environmental protection, it has therefore been proposed in practice to manufacture the elastomeric stator on the one hand and the stator jacket or stator housing made of metal on the other as separate components.
  • the stator can then be inserted in the course of assembly in the cylindrical stator shell made of metal, so that after appropriate wear only the stator replaced and used the stator case again can be.
  • stators are also referred to as a push-in.
  • the assembly of such a slide-in stator is often expensive in practice and associated with extensive disassembly of the eccentric screw pump.
  • the invention has for its object to provide an eccentric screw pump of the type described above, which allows replacement of the elastic stator in a cost effective and simple assembly technique.
  • the stator consists of a longitudinally divided stator of at least two stator sub-shells. It is preferably two stator shells, which are thus designed as half shells and each cover an angle of 180 °.
  • the invention also includes split stators with three, four or more sub-shells, which then each cover an angle of 120 ° or 90 ° or less.
  • the invention is initially based on the recognition that it is expedient to produce the elastomeric stator as a separate component from the stator shell or stator housing to ensure replacement of only the elastomeric component and a reusability of the stator shell.
  • the exchange can be done without a costly disassembly of the pump is necessary.
  • the pump can remain mounted in its basic structure on eg a base plate or mounting plate.
  • the suction housing on the one hand and the connection piece on the other as well as the rotor can remain mounted.
  • the two half shells or the plurality of partial shells can then be mounted as it were around the rotor.
  • the stator is connected with its ends, on the one hand, to a connection flange of the suction housing and, on the other hand, to a connecting flange of the connecting piece, wherein the separate partial shells - as explained - can be mounted individually, without disassembly of the pump being required.
  • the partial shells are elastically deformable and therefore are kinkable or bendable for insertion. It may be expedient not to mount the stator or the stator shells directly to the connection flanges, but to provide adapter pieces which are connected to the one or more connection flanges.
  • annular adapter pieces are adapted to the geometry of the stator or the stator partial shells, so that with the help of the adapter pieces in principle also has the possibility of using the longitudinally divided stator according to the invention in connection with conventional pump housings or suction housings and connecting pieces.
  • the adapters can also be referred to as centering rings.
  • stator or the stator partial shells with end sealing surfaces can each be plugged into a stator receptacle of the corresponding connection flange or of the corresponding adapter piece or can be plugged onto such.
  • the stator at the end has conical, preferably outer-conical or inner-conical sealing surfaces, while the described stator receptacles of the connecting flanges or adapter pieces have conical, preferably inner-conical or outer-conical sealing counter surfaces.
  • the end-side sealing surfaces of the stator are formed externally conical and they then abut against the inner-conical sealing mating surfaces of the stator.
  • the stator has end-to-end conical sealing surfaces, and the stator receptacles on the connection flange or on the adapter piece have outer-conical sealing opposing surfaces.
  • stator receptacle protrudes, as it were, in the axial or axially parallel direction from the connection flange or the adapter piece, so that the stator receptacle engages in the stator end or the stator is plugged onto the stator receptacle.
  • the cone angle of the sealing surfaces or the sealing counter surfaces may be 10 ° to 50 °, preferably 20 ° to 30 °.
  • stator casing is designed as a longitudinally divided casing and has for this purpose at least two, preferably at least four casing segments.
  • This also contributes to the fact that the wearing part forming elastomeric stator can be replaced without major disassembly, because even the multi-part stator jacket can now be dismantled without the suction housing, discharge nozzle and / or rotor must be removed from its installed position.
  • a longitudinally divided stator jacket with its several shell segments at the same time forms a stator-clamping device or stator adjustment device with which the stator can be tensioned against the rotor, in particular in the radial direction.
  • the invention is based on the recognition that the elastomeric stator is usually mounted with respect to the rotatably driven rotor with a bias, wherein the function of the eccentric screw pump depends substantially on this bias.
  • the simple structure and in particular the simple replacement of the stator can now be the desired Vorspannure set excellent and in particular set up a post-tension with appropriate wear.
  • the tightness of the longitudinally divided stator is ensured by the multi-part clamping device.
  • the stator clamping device ensures not only a sufficient tightness or connection of the two stator sub-shells to each other, but also a tight connection or a tight engagement of the stator ends in the corresponding stator receptacles of the connecting flanges or adapters.
  • the invention proposes that the outer side abutting against the stator shroud segments have, for example, end mounting flanges for attachment to the flange or adapter piece. These mounting flanges can be connected to the connection flange or the adapter piece with clamping devices for the purpose of clamping the stator.
  • the clamping means can be designed as screw devices, so that can be adjusted in a simple manner, the desired bias or adjusted.
  • the shroud segments are adapted with their mounting flanges to the geometry of the stator and the connecting flanges or adapter pieces, that the fastening of the mounting flanges on the connecting flanges or adapter pieces to form an adjustable annular gap.
  • This can be a gap width of up to 10 mm, preferably up to 5 mm. It may therefore be expedient to mount the mounting flanges first with a gap width of, for example, 5 mm, so that then a residual tension of a total of 5 mm clamping path can take place when wear occurs.
  • the mounting flanges can overlap or engage in the connection flange or the adapter piece.
  • stator subshells each have at least one antirotation protruding on the outside.
  • an anti-rotation can be connected as a longitudinal ridge on the outside of the stator subshells, for example.
  • the geometry of the stator shells with their longitudinal webs is preferably adapted to the geometry of the plurality of shroud segments, so that engage in the invention, the longitudinal webs forming the rotation in corresponding spaces between two adjacent shroud segments.
  • these webs may also have end stops, which serve as axial securing and abut against the adapter pieces or connecting flanges.
  • stator according to the invention can be easily mounted and replaced, without, e.g. Pressure nozzle or pressure lines must be solved.
  • the required rotor-stator clamp can be easily adjusted.
  • the stator can be easily manufactured in relation to the dimensions of the stator geometry, since exact dimensional accuracy is no longer required.
  • an eccentric screw pump which in its basic structure has a stator 1 made of an elastic material and a rotor 2 mounted in the stator 1, wherein the stator 1 is surrounded at least in regions by a stator shell 3. Furthermore, the pump has a suction housing 4 and a connection piece 5, which is also referred to as a discharge nozzle. Not shown is also provided drive, wherein the drive operates on the rotor 2 via a merely indicated coupling rod 6. The coupling rod is connected via coupling joints on the one hand to the rotor 2 and on the other hand to the drive shaft, not shown, wherein of the coupling joints only the rotor-side hinge 7 is shown.
  • the pump is usually mounted on a merely indicated base plate 8, which may be a base plate supplied with the pump or a base plate provided by the user.
  • the stator 1 is connected in a conventional manner with its one end to a connecting flange 9 of the suction housing 4 and with its other end to a connecting flange 10 of the connecting piece 5.
  • the connection in the illustrated embodiment is not directly to these connection flanges 9, 10, but with the interposition of an adapter piece 11, 12, whose structure will be explained in more detail below.
  • These adapters are also referred to as centering rings.
  • stator 1 is now formed as a longitudinally divided stator and consists of two stator-part shells 1 a, 1 b, which form half-shells in the embodiment, each covering an angle of 180 °.
  • Longitudinal means means along the stator longitudinal axis L or parallel to this. The separating cut between the partial shells consequently runs along or parallel to the longitudinal axis L.
  • This longitudinally divided configuration of the elastomeric stator makes it possible to disassemble and mount the stator 1 with the suction housing 4, discharge nozzle 5 and rotor 2 mounted, since the stator 1 does not, as in the prior art, e.g. must be pushed from one side onto the rotor 2 after removing the pressure port 5.
  • stator 1 and its stator shells 1 a, 1 b end sealing surfaces 13, 14 (or 13 ', 14') on.
  • the stator partial shells 1a, 1b are then (successively) with their end-side sealing surfaces 13, 14 in Statorfactn 15, 16 inserted or with sealing surfaces 13 ', 14' on such Statorabilityn 15 ', 16' attachable, said Statorfactn in the here illustrated embodiment with adapter pieces on these adapter pieces 11, 12 are provided.
  • the adapter pieces 11, 12 themselves can be used in known receptacles on the one hand suction housing 4 and the other pressure port 5, so that suction housing 4 on the one hand and pressure port 5 on the other hand can be formed in a conventional construction and consequently can be used with conventional one-piece stators.
  • the end-side sealing surfaces 13, 14 (or 13 ', 14') of the stator 1 are conical or designed as a conical surface, in the embodiment according to Fig. 1 to 7 "Outside-conical".
  • the Statorchantn 15, 16 (or 15 ', 16') also have corresponding conical sealing mating surfaces 17, 18 (17 ', 18') according to Fig. 1 to 7 can be formed internally-conical.
  • stator jacket 3 is provided.
  • This is inventively designed as a longitudinally divided shell and has several, in the exemplary embodiment four, shell segments 19. Consequently, this stator jacket 3 forms, with its jacket segments 19, a stator clamping device or stator adjusting device with which the longitudinally divided stator 1 can be fixed and sealed on the one hand and a desired voltage or bias voltage can be introduced into the stator 1 on the other hand.
  • This succeeds within the scope of the invention in a particularly uniform manner, since four or more shell segments 19 are used. In Fig. 1 only one of these shell segments is shown.
  • the outer side of the stator 1 adjacent jacket segments 19 have end mounting flanges 20 for attaching the shell segments 19 to the adapter pieces 11, 12. These mounting flanges 20 engage over the adapter piece 11, 12.
  • the mounting flanges 20 are connected to the shell segment 19 by means of welded joints.
  • the shroud segments 20 can also be made in one piece, including mounting flange.
  • a plurality of stud bolts are connected as screw bolts 22 to the connecting flanges 9, 10 or in the exemplary embodiment adapter pieces 11, 12.
  • the desired voltages can be adjusted via suitable nuts 23.
  • the end attachment flanges thus have openings for the studs 22 or suitable screws on.
  • the figures show that the attachment takes place with an adjustable annular gap R between the mounting flanges of the shell segments 19 and the adapter pieces. By adjusting this annular gap R, the desired preload can then be adjusted or re-tensioned.
  • the shell segments 19 can then be fixed by means of screw 24 in the longitudinal direction of the adapter pieces or flanges.
  • stator partial shells 1 a, 1 b each have at least one torsion protection 25 projecting on the outside, which in the exemplary embodiment are designed as longitudinal webs 25 extending over almost the entire stator length, which are integrally formed on the outside of the stator, for example vulcanized.
  • Fig. 6 shows that these longitudinal webs 25 engage in the course of assembly in intermediate spaces between the individual maneseat segments 19, so that the longitudinal webs are as it were clamped between two adjacent shell segments 19 and thus form an anti-rotation.
  • the longitudinal webs 25 but also the axial securing, because they are placed in their length to the distance between the adapter pieces, so that stops 26 are provided, which rest against the adapter pieces 11, 12.
  • the longitudinally divided stator 1 according to the invention is preferably first manufactured as a one-piece stator 1 and then separated, for example in the way of water jet cutting. This allows a simple and cost-effective production.
  • Fig. 1 to 7 show a possible embodiment in which stator 1 is inserted into corresponding receptacles 15, 16. This ensures a good seal in the course of clamping.
  • Fig. 8 to 10 show embodiments, in which the stator 1 with its partial shells 1 a, 1 b on suitable "projecting" receptacles 15 ', 16' can be plugged.
  • Fig. 8 shows a preferred embodiment of the invention, which in its basic structure of the embodiment according to Fig. 1 to 7 equivalent. It differs from this embodiment essentially in that the stator 1 is not inserted with its ends in a receptacle, but on recordings 15 ', 16' is attached.
  • the stator 1 therefore has end-side sealing surfaces 13 ', 14', which are formed inside-conical.
  • the Statorfactn 15 ', 16' have accordingly outer-conical sealing mating surfaces 17 ', 18'.
  • the Statorfactn 15 ', 16' are therefore each formed by a projecting axially outwardly sealing collar, which is formed in the embodiment of the adapter piece.
  • stator receivers 15 ', 16' engage, as it were, in the interior of the stator end of the stator 1.
  • Fig. 8 Strictly shows only the one end of the arrangement with the reference numerals 13 ', 15' and 17 '.
  • the reference numerals 14 ', 16' and 18 ', which refer to the opposite, not shown end, are therefore provided in parentheses for the sake of completeness.
  • the stator 1 is also formed in several parts in this embodiment. In detail, the structure - apart from the configuration of the stator receptacles and the sealing surfaces - the structure according to Fig. 1 to 7 ,
  • Fig. 8 recognizable that means for receiving Kipp beyond or radial forces can be provided on the connecting flanges and / or adapter pieces.
  • Fig. 8 Radially projecting from the adapter pieces threaded pins 27 can be seen, which engage in corresponding recesses on the stator casing or on the mounting flanges 20.
  • These setscrews 27 are thus provided in addition to the clamping means 21 provided anyway. While on the clamping means 21, the adjustment the segments can take place, the set screws 27 serve to receive the tilting forces or radial forces.
  • Fig. 9 shows an example of an alternative way to accommodate the tilting forces or radial forces.
  • the in Fig. 8 Grub screws 27 omitted.
  • spacers are used between the individual shell segments or their mounting flanges, which are wedge-shaped in the embodiment as guide wedges 28.
  • FIG. 10 Another way to absorb tilting forces or radial forces.
  • a quasi-positive connection between the connecting flanges or adapter pieces on the one hand and the shell segments or their mounting flanges on the other hand is provided.
  • claw-like projections 29 are provided, which engage in corresponding receptacles or recesses 29b on the respective shell segment or its mounting flange.
  • axial and radial securing via these form-locking elements, eg, claws, on the centering ring on the one hand and the stator adjustment segment on the other hand are possible.

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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)

Abstract

L'invention concerne une pompe à vis sans fin excentrique comportant au moins un stator (1) à base d'un matériau élastique et un rotor (2) monté dans le stator (1). Le stator (1) est entouré, au moins par endroits, par une enveloppe statorique (3). Ladite pompe à vis sans fin excentrique se caractérise en ce que le stator (1) se compose, en tant que stator segmenté dans le sens longitudinal, d'au moins deux coques partielles statoriques (1, 1b).

Claims (11)

  1. Pompe à vis exentrée comprenant au moins un stator (1) à base d'un matériau élastique et un rotor (2) monté dans le stator (1),
    comprenant un carter d'aspiration (4) et une tubulure de branchement (5), le stator étant raccordé par l'une de ses extrémités à une bride de branchement (9) du carter d'aspiration (4) et par son autre extrémité à une bride de branchement (10) de la tubulure de branchement,
    le stator (1) étant entouré au moins par endroits d'une enveloppe de stator (3),
    le stator (1) étant constitué en tant que stator divisé dans la longueur d'au moins deux coques partielles de stator (1, 1 b),
    le stator (1) respectivement les coques partielles de stator (1a, 1 b) dotés de surfaces d'étanchéité (13, 14, 13', 14') côté extrémité pouvant être enfichés dans respectivement un logement de stator (15, 16, 15', 16') de la bride de branchement (9, 10) ou d'un adaptateur (11, 12) ou pouvant être emboîtés sur un tel logement,
    le stator (1) présentant côté extrémité des surfaces d'étanchéité (13, 14, 13', 14') coniques, par exemple coniques à l'extérieur ou coniques à l'intérieur,
    les logements de stator (15, 16, 15', 16') des brides de branchement ou des adaptateurs présentant des contre-surfaces d'étanchéité (17, 18, 17', 18') coniques, par exemple coniques à l'intérieur ou coniques à l'extérieur,
    l'enveloppe de stator (3) étant conçue comme enveloppe divisé dans la longueur et présentant au moins deux, de préférence quatre segments d'enveloppe (19), l'enveloppe de stator (3) formant avec ses segments d'enveloppe (19) un dispositif de serrage de stator, avec lequel le stator (1) peut être tendu dans le sens radial contre le rotor (2).
  2. Pompe à vis exentrée selon la revendication 1, caractérisée en ce que le stator (1) et/ou les coques partielles (1a, 1 b) est/sont raccordé(s) avec l'intercalation d'un ou de plusieurs adaptateurs (11, 12) à la bride de branchement ou aux volets de branchement (9, 10).
  3. Pompe à vis exentrée selon la revendication 1 ou 2, caractérisée en ce que l'angle de cône (α) des surfaces d'étanchéité (13, 14) et/ou des contre-surfaces d'étanchéité (17, 18, 17', 18') est d'environ 10° à 50°, de préférence 20° à 30°.
  4. Pompe à vis exentrée selon l'une des revendications 1 à 3, caractérisée en ce que les segments d'enveloppe (19), s'appliquant côté extérieur contre le stator (1) présentent par exemple côté extrémité des brides de fixation (20) pour la fixation sur la bride de branchement (9, 10) ou l'adaptateur (11, 12).
  5. Pompe à vis exentrée selon la revendication 4, caractérisée en ce que les brides de fixation (20) sont raccordées pour le serrage du stator avec des moyens de serrage (21) à la bride de branchement (9, 10) ou à l'adaptateur (11, 12).
  6. Pompe à vis exentrée selon la revendication 5, caractérisée en ce que les moyens de serrage (21) sont conçus comme des dispositifs à vis de serrage (22, 23).
  7. Pompe à vis exentrée selon l'une des revendications 4 à 6, caractérisée en ce que les brides de fixation à fente annulaire (R) réglable sont raccordées à la bride de raccordement (9, 10) ou l'adaptateur (11, 12).
  8. Pompe à vis exentrée selon l'une des revendications 4 à 7, caractérisée en ce que les brides de fixation (20) recouvrent ou entourent la bride de branchement (9, 10) ou l'adaptateur (11, 12).
  9. Pompe à vis exentrée selon l'une des revendications 1 à 8, caractérisée en ce qu'une ou plusieurs coques partielles de stator, de préférence toutes les coques (1 a, 1 b) présentent à chaque fois au moins un blocage en rotation (25) dépassant côté extérieur.
  10. Pompe à vis exentrée selon la revendication 9, caractérisée en ce que le blocage en rotation (25) est conçu sous forme de nervure longitudinale (25), raccordée côté extérieur à la coque partielle de stator, par exemple formée dessus.
  11. Pompe à vis exentrée selon la revendication 10, caractérisée en ce que la nervure longitudinale (25) présente des butées (26) côté extrémité comme blocage axial.
EP08785517A 2007-08-17 2008-08-13 Pompe à vis sans fin excentrique à stator segmenté Active EP2176552B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08785517T PL2176552T3 (pl) 2007-08-17 2008-08-13 Mimośrodowa pompa śrubowa z dzielonym statorem

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007039062 2007-08-17
DE102008011690 2008-02-28
DE102008021920A DE102008021920A1 (de) 2007-08-17 2008-05-02 Exzenterschneckenpumpe
PCT/EP2008/006641 WO2009024279A1 (fr) 2007-08-17 2008-08-13 Pompe à vis sans fin excentrique à stator segmenté

Publications (2)

Publication Number Publication Date
EP2176552A1 EP2176552A1 (fr) 2010-04-21
EP2176552B1 true EP2176552B1 (fr) 2012-05-16

Family

ID=39942685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785517A Active EP2176552B1 (fr) 2007-08-17 2008-08-13 Pompe à vis sans fin excentrique à stator segmenté

Country Status (8)

Country Link
US (1) US8439659B2 (fr)
EP (1) EP2176552B1 (fr)
JP (1) JP2010537095A (fr)
CN (1) CN101796301B (fr)
BR (1) BRPI0815403A2 (fr)
ES (1) ES2387834T3 (fr)
PL (1) PL2176552T3 (fr)
WO (1) WO2009024279A1 (fr)

Cited By (1)

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US12152588B1 (en) 2023-05-26 2024-11-26 Grant Prideco, Inc. Free-mold stator for a progressing cavity pump

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US8182252B2 (en) 2007-10-30 2012-05-22 Moyno, Inc. Progressing cavity pump with split stator
US8215014B2 (en) 2007-10-31 2012-07-10 Moyno, Inc. Method for making a stator
FR2948424B1 (fr) * 2009-07-23 2017-07-21 Pcm Pompe a cavites progressives et dispositif de pompage associe
CN101892982B (zh) * 2010-06-28 2012-06-20 中国石油大学(北京) 单螺杆金属螺杆泵定子及其内螺旋面加工方法
WO2012026085A1 (fr) * 2010-08-25 2012-03-01 古河産機システムズ株式会社 Structure d'étanchéité de stator pour pompe à vis excentrique à arbre unique
DE102010037440B4 (de) 2010-09-09 2014-11-27 Seepex Gmbh Exzenterschneckenpumpe
CN102062089A (zh) * 2010-12-24 2011-05-18 新疆华易石油工程技术有限公司 一种全金属螺杆泵定子的加工方法
DE102012112044B4 (de) * 2012-05-04 2015-10-08 Netzsch Pumpen & Systeme Gmbh Selbstfixierendes Statorgehäuse
US8967985B2 (en) 2012-11-13 2015-03-03 Roper Pump Company Metal disk stacked stator with circular rigid support rings
WO2015064372A1 (fr) * 2013-10-29 2015-05-07 兵神装備株式会社 Pompe à vis excentrique uniaxiale
JP6349566B2 (ja) * 2014-01-28 2018-07-04 兵神装備株式会社 一軸偏心ネジポンプ
JP6349565B2 (ja) 2014-01-28 2018-07-04 兵神装備株式会社 一軸偏心ネジポンプ
DE102014112552B4 (de) * 2014-09-01 2016-06-30 Seepex Gmbh Exzenterschneckenpumpe
DE102014112550B4 (de) 2014-09-01 2016-06-16 Seepex Gmbh Exzenterschneckenpumpe
DE102015112248A1 (de) * 2015-01-29 2016-08-04 Netzsch Pumpen & Systeme Gmbh Exzenterschneckenpumpe und Verfahren zum Anpassen des Betriebszustands einer Exzenterschneckenpumpe
CN105351184A (zh) * 2015-11-23 2016-02-24 重庆高研泵业有限公司 安全螺杆泵
CZ306826B6 (cs) * 2016-04-01 2017-07-26 Petr Havránek Zařízení pro čerpání kapalin a výměnný dílec pro něj
DE102017100540B4 (de) 2017-01-12 2018-09-06 Seepex Gmbh Exzenterschneckenpumpe
EP3382203B1 (fr) * 2017-03-30 2024-05-15 Roper Pump Company LLC Pompe à cavité progressive avec gaine de chauffage intégrée
EP3473856B1 (fr) 2017-10-20 2020-12-30 Circor Pumps North America, Llc. Dispositif de démontage pour pompes à cavité progressive
DE102018102640A1 (de) 2018-02-06 2019-08-08 Seepex Gmbh Exzenterschneckenpumpe
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CN110410316B (zh) * 2019-09-05 2024-06-11 无锡恒信北石科技有限公司 高稳定的全金属锥形螺杆泵的新型驱动提升装置
JP6824537B1 (ja) * 2019-09-24 2021-02-03 兵神装備株式会社 一軸偏心ねじポンプ
DE102019130981A1 (de) * 2019-11-15 2021-05-20 Seepex Gmbh Exzenterschneckenpumpe
EP3825552B1 (fr) * 2019-11-22 2025-03-12 Grundfos Holding A/S Pompe à vis excentrique
DE102021112422A1 (de) 2021-05-12 2022-11-17 Seepex Gmbh Pumpe zum Fördern eines Mediums und Verfahren zur Überwachung
DE102021112419A1 (de) 2021-05-12 2022-11-17 Ruhr-Universität Bochum, Körperschaft des öffentlichen Rechts Pumpe zum Fördern eines Mediums und Verfahren zur Überwachung
DE102021132561A1 (de) 2021-12-09 2023-06-15 Seepex Gmbh Gelenkverbindung, rotierende Einheit und Exzenterschneckenpumpe
DE102021132549A1 (de) 2021-12-09 2023-06-15 Seepex Gmbh Gelenkverbindung, rotierende Einheit und Exzenterschneckenpumpe
DE102022118485B3 (de) * 2022-07-25 2023-12-21 Netzsch Pumpen & Systeme Gmbh System zum Verspannen eines Tauchrohrs einer Tankpumpe in einem Endstutzen
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CN101796301A (zh) 2010-08-04
BRPI0815403A2 (pt) 2015-02-03
HK1144457A1 (en) 2011-02-18
EP2176552A1 (fr) 2010-04-21
WO2009024279A1 (fr) 2009-02-26
JP2010537095A (ja) 2010-12-02
US8439659B2 (en) 2013-05-14
US20100196182A1 (en) 2010-08-05
CN101796301B (zh) 2013-05-15
ES2387834T3 (es) 2012-10-02
PL2176552T3 (pl) 2012-10-31

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