EP3538767A1 - Exzenterschneckenpumpe - Google Patents
ExzenterschneckenpumpeInfo
- Publication number
- EP3538767A1 EP3538767A1 EP17804474.9A EP17804474A EP3538767A1 EP 3538767 A1 EP3538767 A1 EP 3538767A1 EP 17804474 A EP17804474 A EP 17804474A EP 3538767 A1 EP3538767 A1 EP 3538767A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- drive
- pump
- coupling rod
- stub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 57
- 238000010168 coupling process Methods 0.000 claims abstract description 57
- 238000005859 coupling reaction Methods 0.000 claims abstract description 57
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- 238000005192 partition Methods 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000692 anti-sense effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
-
- 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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
- F04C11/006—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle having complementary function
-
- 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
- F04C2230/80—Repairing 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
- F04C2230/85—Methods for improvement by repair or exchange of parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
Definitions
- the invention relates to an eccentric screw pump with at least
- a pump housing eg suction housing connected to the stator (eg on the suction side), which has at least one housing opening, eg a housing, for example, B. inlet opening (or outlet opening), for the medium to be delivered,
- connection housing arranged between the pump housing and the drive
- the pump housing has a drive-side (eg tubular) housing stub to which the connection housing is connected the pump housing has a stator-side (eg tubular) housing stub to which the stator is connected.
- the housing opening, z. B. inlet opening of the pump housing (which can also work as an outlet) is preferably disposed between the drive-side nozzle and the stator-side nozzle.
- Such an eccentric screw pump is a pump from the group of rotary displacement pumps, which are used to convey a wide variety of media and in particular highly viscous liquids in various industrial sectors.
- the liquids to be delivered can be z. B. also contain solids.
- the drive works on the coupling rod via the connecting shaft.
- the connecting shaft can be formed directly from the drive shaft of the drive.
- the connecting shaft is preferably a shaft that is separate from the drive and that can be designed as a plug-in shaft and, as it were, serves as a connecting piece between the drive shaft and the power transmission parts of the pump.
- the connection housing arranged between the pump housing (eg suction housing) and the drive is also referred to in practice as a "lantern.” This serves to "receive" or fasten and support the pump housing on the one hand and the drive on the other hand.
- connection housing or the lantern is mounted on a base plate or directly on a foundation and the drive and the pump housing is supported or carries.
- the drive can be designed as an electric motor drive or as a hydraulic drive.
- the eccentric screw pump is designed as a funnel pump, wherein the inlet opening of the pump housing is designed as an inlet funnel.
- the coupling rod z. B. is arranged below the inlet funnel, with at least one transport device, for. B. a transport screw or similar transport elements.
- Such a screw conveyor can, for. B. peripherally circumferentially welded to the coupling rod.
- the invention teaches in a generic eccentric screw pump of the type described above, that the antnebs worne housing stub so dismantled (or disassembled) and therefore open, that the anti-sideways joint for maintenance or disassembly is exposed.
- the antinodial housing stub is preferably designed so that the antinode-side joint can be exposed such that the (at least in the joint region or in the plane of the joint) is no longer surrounded over the entire circumference of the housing stub by the drive-side housing stub.
- the exposure of the drive-side joint takes place in such a way that the antisense joint (in the joint area) is fully exposed.
- the invention basically includes the possibility that such a displaceable housing or such a displaceable (tubular) nozzle section is pushed away from the pump housing and consequently in the direction of the drive or of the connection housing (lantern).
- the displacement preferably takes place in the direction of the pump housing (or on the pump housing).
- the (tubular) second nozzle portion and the (tubular) first nozzle portion are each at least partially cylindrical or substantially cylindrical. It is advantageous if the inner diameter of the displaceable second nozzle portion (at least partially) is greater than the outer diameter of the fixed first nozzle portion. This applies in particular when the second nozzle section can be pushed onto the first nozzle section. If the second nozzle section can be inserted into the first nozzle section, it is expedient for the outer diameter of the second nozzle section to be smaller than the inner diameter of the first nozzle section. In the assembled state, of course, a suitable seal between the first nozzle portion and the second nozzle portion is provided, so that the
- the coupling rod which optionally with a transport device, for. B. transport screw is provided in the course of disassembly of the drive-side housing stub against lowering or falling and / or against (axial) displacement is supported or supported.
- This makes it possible to fix the coupling rod (or screw conveyor) before loosening the drive-side joint for service purposes. In this way, the dismantling of the joints can be facilitated.
- a separate fixation and positioning by a crane or the like is not necessary.
- the coupling rod of the displaceable second nozzle portion, for. B. is supported by a front-side nozzle wall of the second nozzle portion.
- the displaceable second nozzle section can therefore be equipped at the end with a front-side nozzle wall, which preferably has a (central) opening.
- the dimensions are realized such that the coupling rod engages in the inserted state of the second nozzle portion in the opening of the nozzle wall, that this nozzle wall or the aperture fix the coupling rod against lowering and / or against axial displacement or supported.
- the aperture can be adapted to the outer circumference of the coupling rod in such a way that in the inserted state, a seal is made, via the front-side nozzle wall of the displaceable second nozzle portion.
- the second nozzle section, z. B. the drive-side chamber is provided with one or more flushing connections, so that this drive-side chamber, in which in the course of disassembly is the exposed joint can be flushed for cleaning purposes, without the flushing liquid enters the suction chamber.
- this drive-side chamber, in which in the course of disassembly is the exposed joint can be flushed for cleaning purposes, without the flushing liquid enters the suction chamber.
- the use of the partition described can therefore be advantageous, since with the help of the partition still
- a support of the coupling rod in the course of dismantling is not only possible in embodiments with movable second nozzle sections, but also in other housing designs with exposure of the joint area, z. B. also in solutions with one or more half-shells, which form the drive-side housing stub or are connected to the drive-side housing stub.
- the drive-side housing socket has a first, fixed nozzle portion, to which a laying second nozzle portion is connected, which z. B. has one or more removable part shells, z. B. is formed by two half-shells. In such an embodiment, for. B.
- a seal may also be provided in the region of this opening.
- this connection between the coupling rod and the corresponding counterpart can be used in the manner described in order to seal the gap between the coupling rod and the housing.
- connection housing is mounted in a basically known manner on a base plate or a foundation, so that it supports or carries the drive and the pump housing. It is preferably provided that this attachment to the base plate or on the foundation for pivoting the connection housing is releasable.
- connection housing is fastened with a plurality of screw connections (or similar connections) on the base plate and the foundation and that only a part of these connections is removed, so that subsequently a pivoting about an axis of rotation can take place, which of one of (dissolved) screw is formed.
- Decisive here is the fact that such a pivoting is possible according to the invention without the pump housing being completely removed. Rather, it is sufficient to disassemble or disassemble the pump housing in the region of the drive-side housing neck in the manner described by z. B. the second nozzle portion of the drive-side housing stub is moved.
- FIG. 1 shows an eccentric screw pump according to the invention in one
- Fig. 9 shows a third embodiment of the invention (in a
- Fig. 1 1 shows a fifth embodiment of the invention and Fig. 12 shows a sixth embodiment of the invention.
- connection housing 14 is arranged, which is also referred to as a lantern.
- a connecting housing 14 receives on the one hand the pump housing 4 and on the other hand the drive 3 or supports it.
- the connection housing 14 may be fastened to a base plate 15.
- the shaft seal 13 is connected to this connection housing 14.
- the eccentric screw pump is designed as a funnel pump.
- the inlet opening 6 is formed as a funnel.
- the coupling rod 10 is provided with a screw conveyor 20, the z. B. outer peripheral side circumferentially welded to the coupling rod 10.
- the pump housing 4 has a drive-side rohrformigen housing socket 16, to which the connecting housing 14 is connected, wherein in this drive-side housing socket 16, the drive-side hinge 1 1 is arranged.
- the pump housing 4 has a stator (rohrformigen) housing stub 17, to which the stator 1 is connected, wherein in this stator-side housing stub 17 z.
- the stator-side joint or rotor-side joint 12 is arranged. In FIGS. 2 to 7, only the stator-side joint or rotor-side joint 12 is arranged.
- Antnebs worne housing socket 16 shown.
- the stator-side housing stub 17 is not shown in Figs. 2 to 7.
- the counter-side housing stub 16 can be dismantled or dismounted in such a way that the counter-side articulation 11 can be uncovered for the purpose of maintenance and / or disassembly.
- FIGS. 2 to 7 and in particular FIGS. 2 and 3. It can be seen in the figures that in this embodiment by disassembly of the drive-side housing stub 16, the anti-sideways hinge 1 1 is fully exposed, d. H. the joint is in this area completely no longer surrounded by the housing neck 16. The exposure can take place over the entire length of the joint, but at least in the joint region or in the plane of the joint.
- the counterpart housing connection piece 16 consists of a first, fixed connection section 16a and a second displaceable connection section 16b.
- the second nozzle portion 16b is axially displaceable in the illustrated embodiment.
- a comparative examination of FIGS. 2 and 3 shows that the area of the drive-side joint 1 1 is exposed and consequently accessible due to the axial displacement of the second nozzle section 16 b.
- a displacement of the second nozzle section 16b takes place axially in the direction of the first nozzle section 16a and consequently in the direction of the inlet opening 6 or the funnel of the pump housing 4.
- At least one seal 18 is provided which seals the first nozzle portion 16a against the second nozzle portion 16b liquid-tight and pressure-tight, in the assembled state,
- the seal 18 is attached to the first nozzle portion 16a on the outer peripheral side (eg, in a groove). Alternatively, however, such a seal may also be arranged on the inner circumference of the second nozzle section 16b.
- the drive-side joint is exposed for the purpose of maintenance and / or disassembly.
- the collar 19 of the drive-side joint 11 can then be removed and the joint can be disassembled (compare FIG. Subsequently, the coupling rod 10 (together with the rotor 2 connected thereto) can be moved away or pulled away from the drive side (compare FIG. 5).
- FIG. 6 it is now possible to pivot the connecting housing 14 about a vertical axis of rotation A (see FIG. 6), without the pump housing 4 itself having to be removed.
- a vertical axis of rotation A refers to the base plate 15 or a corresponding foundation.
- mount such a pump in a different orientation. For example As an assembly in the vertical direction, the base plate is vertically aligned, so that the connection housing 14 is then pivoted about a horizontal axis, which, however, is then also vertically on the base plate and the corresponding reference plane.
- the connecting shaft 9, which is designed as a plug-in shaft, can be pulled out of the connecting housing 14.
- the plug-in shaft is a wearing part, which must be replaced at regular intervals.
- this replacement can now take place without the drive 3 and the pump housing 4 having to be removed. Rather, it is sufficient to open the pump housing 4 only on the drive side in the manner described or disassemble and then to pivot the connection housing 14 in the manner described.
- the shaft seal, z. B. Gleitringdraum 13 are exchanged.
- FIGS. 6 and 7 show the pump in a plan view, while Figs. 2 to 5 show the pump in a side view and in a vertical section.
- the lantern or the connecting housing 14 with fastening means, for. B. can be attached to the base plate with four screws.
- the connection housing 14 is then pivotable about the axis A formed by this screw.
- FIGS. 8 to 12 Alternative embodiments of the invention will be explained with reference to FIGS. 8 to 12, wherein the features implemented in the various embodiments can also be implemented in various combinations in the embodiment according to FIGS. 1 to 7. It happens
- Fig. 8 shows an embodiment in which the displaceable second nozzle portion 16b is provided with an end-side nozzle wall 21, said nozzle wall 21 having a (central) opening 22.
- the connecting shaft 9 passes through this opening 22.
- the displaceable second nozzle section 16b is displaced in the direction of the fixed first nozzle section 16a and in the displaced position the coupling rod 10 is supported by this nozzle wall 21 or the opening 22, then that the coupling rod 10 does not decrease even after separation of the joint 1 1.
- a seal of the interior 25 of the pump housing 4 but without in the embodiment of Fig. 8, a special seal in the region of the opening 22 is arranged.
- Fig. 8 shows an embodiment in which the housing socket 16b is not pushed onto the housing socket 16a, but is inserted into the housing socket 16a.
- the support shown in Fig. 8 can be realized in the same way also in the embodiment shown in Figures 1 to 7.
- Fig. 9 shows a modified embodiment in which the support of the coupling rod 10 in the course of disassembly is not realized via an end-side nozzle wall on the displaceable nozzle section 16b, but via an (additional) partition wall 23, in the drive-side
- Housing socket 16 is arranged.
- This partition 23 may, for. B. be integrated at the front end of the fixed nozzle portion 16a in this nozzle portion 16a.
- the partition wall 23 is also provided with an opening 26 through which the coupling rod 10 is passed, so that the coupling rod 10 is supported at least in the course of disassembly of the drive-side housing stub 16 in the opening 26.
- the dividing wall 23 separates a drive-side chamber 24 (which is formed, for example, by the displaceable neck portion 16b) from the interior 25 of the pump housing.
- FIG. 10 essentially corresponds to the embodiment according to FIG. 9.
- rinsing connections 28, 29 are arranged here in the area of the second connection section, so that, for example, FIG. B. the drive-side chamber 24, which is formed by the second nozzle portion 16 b, with these flushing ports 28, 29 is provided. In this way, then the space around the (exposed) joint 1 1 can be cleaned without cleaning fluid enters the interior 25 of the pump housing.
- FIG. 11 shows a modification in which the coupling rod 10 is supported in the aperture 26 with the interposition of a seal 27.
- a further modification can be seen in FIG. 11, since the partition wall 23 is not arranged at the front end of the fixed connection section 16a, but an additional component 30 is provided which extends the first connection section 16a, so that the second Stub portion 16b can be pushed onto this additional extension member 30.
- the partition wall 23 is part of this additional nozzle component 30.
- Fig. 12 shows a modified embodiment in which the disassembly is not realized via an axial displacement, but via a half-shell solution.
- a fixed first nozzle section 16a is provided and the second nozzle section 16b is in this case of several partial shells, z. B. formed two half shells.
- z. B. formed two half shells.
- a partition wall 23 is provided, which is provided with an opening 26 for supporting the coupling rod.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016121582.1A DE102016121582A1 (de) | 2016-11-10 | 2016-11-10 | Exzenterschneckenpumpe |
PCT/EP2017/078800 WO2018087248A1 (de) | 2016-11-10 | 2017-11-09 | Exzenterschneckenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3538767A1 true EP3538767A1 (de) | 2019-09-18 |
EP3538767B1 EP3538767B1 (de) | 2023-08-09 |
Family
ID=60473491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17804474.9A Active EP3538767B1 (de) | 2016-11-10 | 2017-11-09 | Exzenterschneckenpumpe |
Country Status (5)
Country | Link |
---|---|
US (1) | US11378078B2 (de) |
EP (1) | EP3538767B1 (de) |
CN (1) | CN109952436B (de) |
DE (1) | DE102016121582A1 (de) |
WO (1) | WO2018087248A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018110917A1 (de) * | 2018-05-07 | 2019-11-07 | Seepex Gmbh | Exzenterschneckenpumpe |
CN109723637A (zh) * | 2019-01-25 | 2019-05-07 | 无锡恒信北石科技有限公司 | 适用于石油领域的全金属锥形组合螺杆泵 |
DE102019135635A1 (de) | 2019-12-20 | 2021-06-24 | Seepex Gmbh | Vorrichtung zur drahtlosen Übermittlung eines Signals |
DE102021111925A1 (de) | 2021-05-07 | 2022-11-10 | Seepex Gmbh | Exzenterschneckenpumpe |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3011445A (en) * | 1957-11-13 | 1961-12-05 | Robbin & Myers Inc | Helical gear pump with by-pass |
US3838949A (en) * | 1973-03-15 | 1974-10-01 | Sumimoto Shipbuilding & Machin | Helical gear pump |
GB9303507D0 (en) * | 1993-02-22 | 1993-04-07 | Mono Pumps Ltd | Progressive cavity pump or motors |
US5688114A (en) | 1996-03-20 | 1997-11-18 | Robbins & Myers, Inc. | Progressing cavity pumps with split extension tubes |
DE19930554C1 (de) * | 1999-07-02 | 2001-06-07 | Mathis Technik | Verfahren und Vorrichtung zum Anmachen von abbindendem Material, insbesondere von einer trockenen oder rieselfähigen Baustoffmischung |
US20030003000A1 (en) * | 2001-06-29 | 2003-01-02 | Shepherd Samuel L. | Polyurethane stator for a progressive cavity pump |
GB2455597B (en) | 2008-07-28 | 2009-12-09 | Mono Pumps Ltd | Pump |
DE202008016904U1 (de) * | 2008-12-19 | 2009-03-05 | M-Tec Mathis Technik Gmbh | Vorrichtung zum Anmachen eines Baustoffs, beispielsweise von Gips |
DE202010011270U1 (de) * | 2010-08-11 | 2010-10-21 | M-Tec Mathis Technik Gmbh | Pumpe zum Fördern von abbindendem Material |
US9038236B2 (en) * | 2012-04-25 | 2015-05-26 | Shop Vac Corporation | Filter shaker |
KR101864972B1 (ko) | 2013-10-29 | 2018-06-05 | 헤이신 엘티디. | 일축 편심 나사 펌프 |
ES2890807T3 (es) * | 2014-05-12 | 2022-01-24 | Hugo Vogelsang Maschb Gmbh | Bomba de tornillo excéntrico con montaje a través del rotor hueco |
DE102014112550B4 (de) * | 2014-09-01 | 2016-06-16 | Seepex Gmbh | Exzenterschneckenpumpe |
DE102018106228A1 (de) * | 2018-03-16 | 2019-09-19 | Seepex Gmbh | Anlage zur Förderung von pastösem Material |
-
2016
- 2016-11-10 DE DE102016121582.1A patent/DE102016121582A1/de active Pending
-
2017
- 2017-11-09 US US16/343,230 patent/US11378078B2/en active Active
- 2017-11-09 EP EP17804474.9A patent/EP3538767B1/de active Active
- 2017-11-09 CN CN201780069564.2A patent/CN109952436B/zh active Active
- 2017-11-09 WO PCT/EP2017/078800 patent/WO2018087248A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE102016121582A1 (de) | 2018-05-17 |
US11378078B2 (en) | 2022-07-05 |
EP3538767B1 (de) | 2023-08-09 |
WO2018087248A1 (de) | 2018-05-17 |
CN109952436B (zh) | 2021-03-02 |
US20190316583A1 (en) | 2019-10-17 |
CN109952436A (zh) | 2019-06-28 |
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