EP3538766A1 - Exzenterschneckenpumpe - Google Patents
ExzenterschneckenpumpeInfo
- Publication number
- EP3538766A1 EP3538766A1 EP17800800.9A EP17800800A EP3538766A1 EP 3538766 A1 EP3538766 A1 EP 3538766A1 EP 17800800 A EP17800800 A EP 17800800A EP 3538766 A1 EP3538766 A1 EP 3538766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- housing
- eccentric screw
- drive
- screw 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.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract description 37
- 238000010168 coupling process Methods 0.000 claims abstract description 37
- 238000005859 coupling reaction Methods 0.000 claims abstract description 37
- 238000000926 separation method Methods 0.000 claims description 34
- 125000006850 spacer group Chemical group 0.000 claims description 17
- 238000005065 mining Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 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
- F04C2/1075—Construction of the stationary member
-
- 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
-
- 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
- F04C2230/603—Centering; Aligning
-
- 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
- F04C2240/10—Stators
-
- 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
- F04C2240/20—Rotors
-
- 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
-
- 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
- F04C2240/60—Shafts
Definitions
- the invention relates to an eccentric screw pump having at least one stator, a rotor rotating in the stator, a drive for the rotor, a pump housing (eg suction housing) connected to the stator, which has at least one housing opening (eg an inlet opening) for the medium to be conveyed has a connection shaft (eg drive shaft) connected to the drive, a coupling rod arranged in the pump housing, the drive side having at least one detachable drive-side connection region (separable) with the connection shaft and rotor side having at least one detachable rotor-side connection region ( separable) is connected to the rotor, wherein the suction housing has a drive-side housing socket and a stator-side housing socket.
- the housing opening eg, inlet opening
- the housing opening is preferably arranged between the drive-side housing stub and the stator-side housing stub, so that these two housing stubs are arranged on both sides of the inlet opening or housing opening.
- 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 liquid media and also highly viscous liquids in various industrial sectors.
- the liquids to be delivered can be z. B. also contain solids.
- the pump is used in mining, mine construction, tunneling or the like.
- the stator consists of z. B. elastic material and is usually surrounded by a one-piece or multi-part stator shell or stator housing (eg., From metal).
- the elastomeric stator can be firmly connected to the stator jacket, z. B. be vulcanized in this.
- the invention also includes embodiments in which the stator is detachably and thus exchangeable formed by the stator jacket.
- the pump housing is also referred to in practice as a suction housing.
- a housing part is usually provided that as a connecting piece, z. B. is referred to as a pressure port, so that the pressure port z. B. can be connected to the stator on the pressure side.
- the connecting shaft can be formed directly from the drive shaft of the drive.
- the connecting shaft is preferably a shaft which is separate from the drive and which 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.
- a connecting housing, in which the connecting shaft is arranged, can be arranged between the pump housing (eg suction housing) and the drive.
- Such a connection housing is also referred to in practice as a "lantern.” This serves to "receive" or support and support the pump housing on the one hand and the drive on the other hand, so that this connection housing or the lantern on a base plate or mounted directly on a foundation is supported and carries the drive and the pump housing.
- the drive can be designed as an electric motor drive or as a hydraulic drive.
- WO 2010/012993 A2 has already described the possibility of exposing the region of the rotor-side joint of the coupling rod in which the stator-side or rotor-side housing neck of the pump housing is made removable.
- a nozzle portion of this housing neck of the pump housing is detachable and can be pushed in the axial or axis-parallel direction of the stator, so that the rotor-side portion of the coupling rod is exposed.
- a housing part can also be formed by half-shells, which are disassembled for the purpose of exposing a hinge region.
- the present invention seeks to provide an eccentric screw pump of the type described above, which is characterized by a simple structure by optimized maintenance and repair options.
- the invention teaches in a generic eccentric screw pump of the type described above, that the rotor-side housing stub has a fixed first nozzle portion and a displaceable second nozzle portion, which for exposing (and separation) of the rotor-side connecting portion axially in the direction of the housing opening of the suction on the first nozzle section is pushed.
- the invention is based on the recognition that maintenance and repair possibilities of an eccentric screw pump of the type described can be optimized if the possibility of a simple disassembly or disassembly of the pump housing is made possible, so that a corresponding connection region (eg a joint) can be exposed in the drive train.
- Stutzenabites of the pump housing is provided, which - not as in the prior art on the stator - but is pushed in the opposite direction to the pump housing itself and consequently to the first, fixed nozzle portion of the pump housing.
- the stator and / or the rotor can be removed and replace if necessary, without the pump housing or suction housing itself must be removed or further dismantled.
- Such a rotor and / or stator replacement is consequently not hindered by the displaceable housing part.
- this embodiment has the advantage that a modular design of the pump is optimized because design or dimensioning of the rotor / stator can be independent of the design or dimensioning of the pump housing, since no part of the pump housing must be pushed onto the rotor / stator but it is carried out in the opposite direction pushing the sliding nozzle portion on the fixed nozzle portion of the pump housing in the direction of the center of the pump housing and consequently in the direction of the (central) housing opening of the pump housing.
- the coupling rod may be connected in a known manner via a rotor-side joint with the rotor. This means that the releasable connection area, which is accessible via the displacement of the nozzle section, is formed by this separable rotor-side joint.
- a separation point in the rotor or in the coupling rod
- This separation point is seen from the (central) coupling rod, preferably beyond the joint.
- the described configuration of the rotor-side housing neck can be realized optionally or additionally also in the region of the drive-side housing neck.
- the invention therefore also relates to a generic eccentric screw pump in which the drive-side housing stub has a fixed first stub section and a displaceable second stub section, which is axially slidable in the direction of the housing opening of the pump housing to the first stub section for exposing the drive-side connection region.
- connection with the rotor-side housing neck can consequently be achieved alternatively or additionally also in the region of the drive-side housing neck, so that in particular a joint provided on the drive side which connects the connecting shaft and the coupling rod to one another can be exposed.
- the coupling rod can be separated from the connecting shaft or drive shaft, so that in particular an exchange of the connecting shaft (eg plug-in shaft) is possible, without dismantling the suction housing or the drive as a whole.
- a locally very limited disassembly or opening of the pump housing in the region of the drive-side connection piece of the suction housing is sufficient.
- the detachable connection area not or not only the separable drive-side joint, but in addition to the joint has a separation point that allows separation of the coupling rod of the connecting shaft / drive shaft without disassembly of the drive-side joint.
- a separation point can also be exposed very easily according to the invention by the displaceable second connecting piece section.
- the configurations of the drive-side housing stub on the one hand and the rotor-side housing stub on the other hand also combine with each other.
- the invention also includes embodiments in which only the rotor-side housing stub or only the drive-side housing stub are formed with the displaceable nozzle section.
- a rotor-side connection region and / or a drive-side connection region In the foreground is the exposure of a rotor-side connection region and / or a drive-side connection region. It may be z. B. itself to the respective joint (eg., Pin joint, Cardan joint or the like) act. As described, however, alternative or additional separation points can also be provided. It is thus preferably provided that the rotor is connected to the coupling rod or to the rotor-side joint with the interposition of a rotor head which can be separated from the rotor. Such an additional separation point in the region of the rotor has the advantage that the rotor-side joint itself does not have to be disassembled in order to exchange the rotor and / or the stator. Rather, a separation can take place at this additional separation point within the rotor.
- the rotor itself is thus extended by an additional, separate rotor head, said rotor head can then contain in particular one joint half of the rotor-side joint, so that the rotor head with its joint half with the coupling rod with the other joint half can be connected together to form the rotor-side joint , In the course of the replacement of the rotor but then a separation of this joint is not required, but the separation takes place as it were within the rotor between the rotor and the rotor geometry and the rotor head.
- the rotor head can be used as an extension element in the assembled state through the second nozzle portion into the region of the first
- the rotor-side joint is preferably arranged within the fixed first nozzle section. With the aid of the rotor head, therefore, an extension of the rotor and thus a bridging of the displaceable second nozzle section takes place.
- the rotor with the rotor head with the interposition of a removable spacer element, for. B. is connected to a removable spacer sleeve.
- the spacer sleeve may consist of two or more distributed over the circumference shell segments, for. B. half shells be composed.
- the (non-rotatable) connection between the rotor head and rotor can be done by means of screws and in addition optionally the spacer element can be provided. However, it is also within the scope of the invention to produce the rotationally fixed connection via the spacer element. Alternatively to a screw connection are also bolted connections,
- the described additional rotor head with a certain length also has the advantage that it can be used on existing pump housing and existing coupling rods.
- the fixed first nozzle section is then part of the existing pump housing and the displaceable second nozzle section is mounted as an additional housing part.
- the rotor is lengthened with the help of the additional rotor head, so that the area
- the drive train consists of starting from the drive, from the drive shaft, optionally an additional separation point, the drive-side joint, the coupling rod, the rotor-side joint, the rotor head, optionally an additional separation point and finally the rotor.
- the connecting region consequently comprises in each case at least the joint and optionally an additional separation point, wherein the additional separation point is provided starting from the (central) coupling rod either at the joint or beyond the joint.
- 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.
- a suitable seal is provided between the first nozzle section and the second nozzle section, so that the pump housing (eg, suction housing) is formed as a whole liquid-tight and pressure-tight.
- the pump housing eg, suction housing
- circumferential seal z. B. with an O-ring
- displaceable second nozzle section on the inner peripheral side with a circumferential seal for.
- an O-ring be provided.
- the respective opposite part optionally has corresponding sealing surfaces against which the seal rests.
- the displaceable nozzle section with suitable fastening means for. B. fastening screws on the first (fixed) nozzle section (releasably) is attached. In operation, therefore, a suitable fixation between the two nozzle sections is provided.
- the displaceable second nozzle portion consists essentially of a (tubular) part, which is pushed onto the fixed nozzle portion.
- the displaceable nozzle section itself is designed in several parts and consists of at least two telescopically displaceable sleeves. The total length of the displaceable nozzle section is then distributed in the mounted state on the two telescoping sleeves and in the course of disassembly, the sleeves can slide over each other, so that all in all, only a shortened space and consequently a shortened solid first nozzle section must be provided. This allows a particularly compact design of the pump housing.
- the (elastomeric) stator can be clamped in a basically known manner with tension rods (or tie rods) in the axial direction, z. B. between a first flange which is arranged on the side of the pump housing and a second flange which is on the opposite side of the pump housing, z. B. is arranged in the region of the pressure port.
- these flanges have recesses, so that the clamping rods pass through the recesses in the flanges, with finally a bracing with suitable clamping means, for.
- a bracing with suitable clamping means for.
- nuts or the like can take place, which are arranged end to the tie rods.
- the recesses into which engage the tie rods at least on one of the flanges as edges open recesses, z. B. edge-open elongated holes are formed so that the tie rods in the region of this flange can be disassembled in the radial direction. The tie rods can then be removed after loosening the clamping screws / clamping nuts radially out of the flange, so that in particular a very space-saving expansion of the tie rods is made possible.
- the (elastomeric) stator has over its entire length or substantially constant wall thickness.
- the same can apply to the stator jacket or stator housing.
- Such a stator with a uniform wall thickness has the advantage over conventional pipe stators under the same pressure conditions of a length and weight reduction and thus the advantage of easier maintenance.
- the rotor is at least over a part of its length, preferably over the entire length, hollow, z. B. is formed as a hollow drilled rotor. This leads to a weight reduction and thus also to a simpler maintenance.
- the eccentric screw pump according to the invention can preferably be used in mining or underground. Here sometimes extreme conditions with high demands on the maintainability of the pump occur. Maintenance is often carried out in a confined space.
- Typical maintenance work involves the replacement of wearing parts, in particular the rotor and stator, but also the mechanical seal.
- the invention relates to only the described eccentric screw pump, but also a rotor assembly for such an eccentric screw, wherein such a rotor assembly, the rotor and the rotor head and optionally a spacer element, for. B. detects the spacer sleeve.
- This rotor assembly is provided as a wear part and spare part of such an eccentric screw pump also isolated under protection.
- the specific embodiment can be realized in the manner described.
- the invention relates to a pump system, for. As for drainage in mining, mine construction, tunneling or the like, with at least one eccentric screw pump of the type described and with at least one tank, for. B. a drainage tank to which the eccentric screw pump is connected.
- the pump is connected to the outlet of such a drainage tank.
- FIG. 1 shows an eccentric screw pump according to the invention in a (partial) vertical section
- Fig. 2 shows a detail of Fig. 1 in another view
- FIG. 3 shows a section of a modified embodiment of the article according to FIG. 1.
- an eccentric screw pump which has in its basic structure a stator 1, a rotor 2 rotating in the stator 1 and a drive 3 for the rotor 2.
- the eccentric screw pump has a (central) pump housing 4, which is also referred to as a suction housing.
- the pump housing 4 is connected to the suction side of the stator 1.
- a further housing part is connected to the stator 1 as a connecting piece, which is also referred to as a discharge nozzle 5.
- the pump housing 4 has a housing opening 6, the z. B. serves as an inlet opening for the medium to be conveyed, so that - depending on the operating direction - the medium z. B.
- the drive 3 is equipped with an integrated drive shaft, not shown, which is connected to a connecting shaft 9.
- This connecting shaft 9 is formed in the embodiment as a plug-in shaft.
- the rotor 2 is connected via a coupling rod 10 with the connecting shaft 9, wherein the coupling rod 10 is connected via a drive-side joint 1 1 with the connecting shaft 9 and a rotor-side joint 12 with the rotor 2.
- the connecting shaft 9 is sealed with a shaft seal 13.
- This shaft seal 13 is z. B. formed as a mechanical seal.
- connection housing 14 is arranged, which is also referred to as a lantern.
- a connection housing 14 supports the pump housing 4 and the
- connection housing 14 may be fastened to a base plate 15.
- the shaft seal 13 is connected to this connection housing 14.
- the pump housing 4 has a drive-side tubular housing stub 16, to which the connecting housing 14 is connected, wherein in this drive-side housing stub 16, the drive-side joint 1 1 is arranged.
- the pump housing 4 has a stator-side (tubular) 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.
- the coupling rod 10 is separably connected to the rotor 2 via a releasable drive-side connecting region separable with the connecting shaft 9 and the rotor side via a detachable rotor-side connecting region.
- this detachable connection region is formed by the drive-side joint 11.
- the optionally separable rotor-side joint 12 is provided on the rotor side.
- a (further) separation point 20 is provided in addition to the joint 12, so that the rotor 2 can be separated from the coupling rod 10 by separating the separation point 20.
- the rotor 2 is connected to the coupling rod 10 or to the joint 12 with the interposition of a separable rotor head 21.
- the rotor head 21 consequently has on the drive side a joint half of the joint 12. Rotor side is
- the rotor head 21 is detachably connected to the rotor 2. This will be discussed below.
- the rotor-side housing connection 17 has, on the one hand, a fixed first connection section 17a and, on the other hand, a displaceable second connection section 17b.
- the displaceable second nozzle section 17b is axially slidable in the direction of the housing opening 6 of the pump housing 4 on the first nozzle section 17a in order to expose (and separate) the rotor-side connecting region.
- the displaceable second nozzle portion 17b is tubular and in the embodiment substantially cylindrical, it can be pushed onto the fixed nozzle portion 17a and thus the rotor-side connection region, namely the separation point 20 is exposed.
- the separation point 20 is as it were integrated into the rotor 2, by the rotor side of the rotor 2 at the end of the rotor head 21 is detachably connected to form the separation point 20.
- the rotor head 21 in this case has a certain length, so that it serves as an extension of the rotor and thus also bridges the displaceable nozzle section 17b. Because the coupling joint 12 is disposed within the fixed nozzle portion 17 a. Consequently, the rotor head 21 extends through the first connection section 17b in the sense of an extension and extends into the second connection section 17a.
- the rotor head 21 has for this purpose the one hinge half of the coupling joint 12. The other joint half is part of the coupling rod 10. In this case, the rotor head 21 at the rotor 2 end facing a
- Flange 32 which is screwed by means of screws 33 with the rotor 2. It can be seen in the embodiment that this screwing takes place with the interposition of a spacer element 22, wherein this spacer element is designed as a (two-part) spacer sleeve 22.
- This spacer sleeve 22, which may consist of two half shells, can be seen after loosening the screws 33, so that in the axial direction, a free space and thus a displacement for the rotor 2 is formed, whereby the disassembly is facilitated. This will be discussed below.
- At least one seal 18 is provided between the first nozzle section 17a and the second nozzle section 17b, which seals the first nozzle section 17a against the second nozzle section 17b in a liquid-tight and pressure-tight manner, in the assembled state shown in FIG is shown.
- the seal 18 is arranged on the outer peripheral side (eg in a groove) on the first nozzle section 17a or an adapter piece 23 connected thereto.
- an adapter piece 23 is connected to the fixed first nozzle portion 17a, which has a flange 24 at the end.
- This adapter piece 23 carries the seal 18.
- the displaceable nozzle part 17b is attached to this adapter piece 23 with fastening screws 25, d. H. it is as it were connected via the adapter piece 23 with the mounting screws 25 to the flange 24.
- the displaceable nozzle part 17b is fastened on the rotor side by means of fastening screws 26 to a stator-side flange 29 or adapter piece 27.
- Suction housing can be used, which already has the fixed nozzle portion 17a and the displaceable nozzle portion 17b is provided as it were as an additional component to form the suction housing 4 according to the invention.
- the stator 1 is clamped with tension rods 28 in the axial direction between a first flange 29 and a second flange 30.
- the first flange 29 is arranged on the side of the pump housing 4.
- the second flange 30 is disposed on the opposite side of the pump housing 4 of the stator. It is part of the connecting piece or pressure nozzle 5.
- the flanges 29, 30 have recesses 31, through which the tie rods 28 are passed. According to the invention, these recesses 31 are at least in the region of one of the flanges as edge-open recesses, z. B. elongated holes, so that the clamping rods 28 are removable in the radial direction in the region of this flange.
- the tie rods 28 are 'fixed or clamped with nuts 28.
- the fastening screws 25 and 26 of the displaceable nozzle portion 17b are released, so that subsequently the displaceable nozzle portion 17b can be pushed in the direction of the arrow P on the first nozzle portion 17a.
- the region of the separation point 20 is exposed. It can then solve the screws 33 and then remove the spacer sleeve 22 (see Fig .. 2). In this way, there is the already described axial clearance between the rotor 2 and the rotor head 21 separated therefrom. Now the tie rods 28 can be loosened and removed
- the elastomeric stator 1 over its entire length or substantially the entire length has a substantially constant wall thickness.
- the stator 1 is firmly connected in the exemplary embodiment with the jacket 1 ', z. B. vulcanized in this.
- the pump shown may be the subject of a pump system or a drainage system, the z. B. may be used in mining, with the subject of such a pump system, at least the illustrated pump and a drainage tank, not shown, are.
- the rotor assembly which may consist of the rotor 2 with rotor head 21 and the spacer sleeve 22.
- FIG. 3 A second embodiment of the invention is shown in Fig. 3 fragmentary.
- This second aspect of the invention relates to the drive side of the pump housing.
- the drive-side housing stub 16 consists here of a first, fixed stub portion 16a and a second displaceable stub portion 16b.
- the second nozzle section 16b is axially displaceable in the illustrated embodiment.
- the area of the drive-side joint 1 1 can expose and thus make accessible.
- 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 of the pump housing 4.
- first nozzle portion 16a and the second nozzle portion 16b at least one seal 18 'is provided.
- the collar 19 of the drive-side joint 1 1 can be removed and the joint can be disassembled.
- the coupling rod 10 can move together with the attached rotor 2 from the drive side 2 away or pull out. Incidentally, disassembly and replacement of the connecting shaft and / or the mechanical seal is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016121581.3A DE102016121581B4 (de) | 2016-11-10 | 2016-11-10 | Exzenterschneckenpumpe |
PCT/EP2017/078808 WO2018087254A1 (de) | 2016-11-10 | 2017-11-09 | Exzenterschneckenpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3538766A1 true EP3538766A1 (de) | 2019-09-18 |
EP3538766B1 EP3538766B1 (de) | 2020-09-23 |
Family
ID=60388036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17800800.9A Active EP3538766B1 (de) | 2016-11-10 | 2017-11-09 | Exzenterschneckenpumpe |
Country Status (7)
Country | Link |
---|---|
US (1) | US11326595B2 (de) |
EP (1) | EP3538766B1 (de) |
CN (1) | CN109952435B (de) |
AU (1) | AU2017358848B2 (de) |
DE (1) | DE102016121581B4 (de) |
DK (1) | DK3538766T3 (de) |
WO (1) | WO2018087254A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7432921B2 (ja) * | 2019-08-29 | 2024-02-19 | 兵神装備株式会社 | 一軸偏心ねじポンプ |
CN114341499B (zh) * | 2019-08-29 | 2023-12-29 | 兵神装备株式会社 | 单轴偏心螺杆泵 |
DE102019130981A1 (de) * | 2019-11-15 | 2021-05-20 | Seepex Gmbh | Exzenterschneckenpumpe |
DE102021111925A1 (de) | 2021-05-07 | 2022-11-10 | Seepex Gmbh | Exzenterschneckenpumpe |
DE102021205936A1 (de) | 2021-06-11 | 2022-12-15 | Putzmeister Engineering Gmbh | Exzenterschneckenpumpenvorrichtung, Pumpensystem, Austragssystem und Verwendung einer Exzenterschneckenpumpenvorrichtung und/oder eines Pumpensystems und/oder eines Austragssystems |
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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0777172B2 (ja) | 1986-06-16 | 1995-08-16 | 日新電機株式会社 | 電磁誘導機器 |
JPH0777172A (ja) * | 1993-09-03 | 1995-03-20 | Heishin Sobi Kk | 一軸偏心ねじポンプ |
US5769618A (en) * | 1995-09-25 | 1998-06-23 | Heishin Sobi Kabushiki Kaisha | Uniaxial eccentric screw pump having a flexible plastic shaft |
US5688114A (en) * | 1996-03-20 | 1997-11-18 | Robbins & Myers, Inc. | Progressing cavity pumps with split extension tubes |
DE10118785A1 (de) * | 2001-04-17 | 2002-10-24 | Viscotec Pumpen Und Dosiertech | Exzenterschneckenpumpe |
US6926492B2 (en) * | 2003-10-21 | 2005-08-09 | Chemgrout, Inc. | Suction housing for rotor/stator pump |
EP1683970A2 (de) * | 2005-01-24 | 2006-07-26 | Knoll Maschinenbau Gmbh | Exzenterschneckenpumpe mit einem abgedeckten Anschlusselement |
DE102008021919A1 (de) | 2008-05-02 | 2009-11-05 | Seepex Gmbh | Exzenterschneckenpumpe |
GB2455597B (en) | 2008-07-28 | 2009-12-09 | Mono Pumps Ltd | Pump |
DE102010037440B4 (de) * | 2010-09-09 | 2014-11-27 | Seepex Gmbh | Exzenterschneckenpumpe |
ES2890807T3 (es) * | 2014-05-12 | 2022-01-24 | Hugo Vogelsang Maschb Gmbh | Bomba de tornillo excéntrico con montaje a través del rotor hueco |
DE102014117932B3 (de) * | 2014-12-04 | 2016-03-31 | Netzsch Pumpen & Systeme Gmbh | Längenausgleichsvorrichtung |
DE102015104300B4 (de) * | 2015-03-23 | 2016-12-01 | Pumpenfabrik Wangen Gmbh | Exzenterschneckenpumpe und Verfahren zum Ausbau eines Stators aus einer derartigen Exzenterschneckenpumpe |
-
2016
- 2016-11-10 DE DE102016121581.3A patent/DE102016121581B4/de not_active Expired - Fee Related
-
2017
- 2017-11-09 US US16/343,692 patent/US11326595B2/en active Active
- 2017-11-09 DK DK17800800.9T patent/DK3538766T3/da active
- 2017-11-09 AU AU2017358848A patent/AU2017358848B2/en active Active
- 2017-11-09 WO PCT/EP2017/078808 patent/WO2018087254A1/de unknown
- 2017-11-09 CN CN201780069454.6A patent/CN109952435B/zh active Active
- 2017-11-09 EP EP17800800.9A patent/EP3538766B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
AU2017358848A1 (en) | 2019-05-30 |
US20190257308A1 (en) | 2019-08-22 |
DK3538766T3 (da) | 2020-12-07 |
CN109952435A (zh) | 2019-06-28 |
DE102016121581B4 (de) | 2018-07-26 |
AU2017358848B2 (en) | 2022-01-27 |
CN109952435B (zh) | 2021-04-06 |
DE102016121581A1 (de) | 2018-05-17 |
EP3538766B1 (de) | 2020-09-23 |
US11326595B2 (en) | 2022-05-10 |
WO2018087254A1 (de) | 2018-05-17 |
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