EP3532729A1 - Pompe à broche hélicoïdale, divisée horizontalement - Google Patents

Pompe à broche hélicoïdale, divisée horizontalement

Info

Publication number
EP3532729A1
EP3532729A1 EP17801607.7A EP17801607A EP3532729A1 EP 3532729 A1 EP3532729 A1 EP 3532729A1 EP 17801607 A EP17801607 A EP 17801607A EP 3532729 A1 EP3532729 A1 EP 3532729A1
Authority
EP
European Patent Office
Prior art keywords
housing part
screw pump
rotors
chamber
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17801607.7A
Other languages
German (de)
English (en)
Other versions
EP3532729B1 (fr
Inventor
Thomas Eschner
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.)
Klaus Union GmbH and Co KG
Original Assignee
Klaus Union GmbH and Co KG
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
Family has litigation
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Application filed by Klaus Union GmbH and Co KG filed Critical Klaus Union GmbH and Co KG
Publication of EP3532729A1 publication Critical patent/EP3532729A1/fr
Application granted granted Critical
Publication of EP3532729B1 publication Critical patent/EP3532729B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • 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
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
    • F04C15/0069—Magnetic couplings
    • 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
    • F04C15/0096—Heating; Cooling
    • 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
    • F04C2240/70—Use of multiplicity of similar components; Modular construction

Definitions

  • the invention relates to a screw pump or screw pump, in particular a single or Mehrflutige double screw pump or twin screw pump comprising a multi-part housing and at least two coupled, chamber-forming rotors, each having at least one at least partially formed, thread-shaped profiling with helical channels and with the channels bounding Partition walls, wherein the rotors exert an opposing rotor rotation and the partition walls mesh tooth-like, a barrel housing part, wherein the rotor housing part surrounds the rotors without contact, wherein the rotors form with the barrel housing part at least one delivery chamber for the fluid to be delivered, wherein the delivery chamber moves axially along the rotor axes and promotes the fluid from a suction chamber into a pressure chamber, a fluidically connected to the suction chamber suction-side connection element and a de m pressure chamber fluidly connected pressure-side connection element.
  • Such screw pumps are known from DE 716 161 A, DE 197 49 572 A1, DE 20 01 000 A, DE 20 01 015 A, GB 645 817 A and US 5 601 414 A.
  • Such a pump is suitable for conveying fluids, such as liquid plastic or other chemical products.
  • a disadvantage of the previously known pump is the high production and maintenance costs.
  • the storage of the rotors in the removable side wall of the pump housing provides for elaborate adjustments of the rotors after disassembly of the pump for cleaning and maintenance.
  • the production of cast steel is difficult due to the complicated shape and sectional double-walledness between spindle bore and pump housing.
  • the invention thus raises the problem of providing a screw pump that allows easy manufacture and maintenance.
  • the screw pump is characterized in that the suction-side connection element and the pressure-side connection element are arranged on a connection housing part of the multi-part housing, wherein the housing between the running housing part and the connection housing part has a substantially planar, parallel to the rotor axes extending graduation plane.
  • a modular design of the pump can be achieved by combining different barrel housing parts and different terminal housing parts can be combined.
  • the housing parts come with almost no undercuts and without double walls, so that the production of the parts in the casting process is significantly simplified.
  • the plane dividing plane also offers simple and durable sealing possibilities between the housing parts of the pump housing.
  • the arrangement of the suction-side and pressure-side connection element in a common connection housing part which can be easily separated by the dividing plane of the barrel housing part, also makes it possible that the connection housing part remains during maintenance in the composite pipe. That is, during maintenance work, the suction-side and the pressure-side connection element with the pipes, remain connected.
  • the rotors are mounted in the barrel housing part.
  • the centering of the storage or the storage itself are included in the barrel housing part.
  • the bearing of the rotors in the barrel housing part makes assembly during the production easier and also reduces the cost of maintenance of the pump.
  • this also has the centerings for the bearing of the rotors.
  • the position of the rotors in the barrel housing part can be checked for better accessibility prior to connection to the terminal housing part. In this way, it can be easily ensured that the rotor housing part surrounds the rotors without contact and that the rotors form at least one sealed pumping chamber with the rotor housing part.
  • the barrel housing part is integrally formed.
  • the one-piece design of the barrel housing part offers particular advantages in the alignment and storage of the rotors in the barrel housing part.
  • the one-piece design of the barrel housing part offers, in particular together with the bearing of the rotors in the barrel housing part the advantage that in the positioning of the rotors no additional tolerances must be taken into account during assembly. Such additional tolerances usually result from the fact that the housing part, which forms the delivery chamber with the rotors, is different from the component which supports the rotors.
  • connection housing part is integrally formed.
  • a one-piece design of the connection housing part facilitates the assembly with the other housing parts of the pump and with the pump connected pipe system.
  • the production of the connection housing part is significantly simplified by the one-piece design.
  • connection housing part together with the running housing part forms the suction space and the pressure space.
  • the formation of the suction chamber and the pressure chamber through the terminal housing part and the barrel housing part provides easy accessibility of the spaces formed by the housing parts upon disassembly of the barrel housing part from the terminal housing part.
  • connection housing part has a partition wall between the suction chamber and the pressure chamber.
  • This partition may be designed differently depending on the requirements at the place of use of the pump, for example, to adjust the conveying direction of the pump. If a so-called "in line" configuration of the connection elements is required, the partition wall between the suction chamber and the pressure chamber can be designed differently than in other desired configurations of the connection housing part, in which the connection elements are offset from one another or at an angle
  • the pressure-equalizing element between the pressure chamber and the suction chamber prevents damage to the pump if, for example, the pipe system connected to the pressure chamber becomes clogged
  • the pressure compensation element designed as an overload valve would divert the pressure generated in the pressure chamber in the direction of the suction chamber and thus prevent damage to the pump and the pipe system
  • Another advantage is the arrangement of a pressure compensation element in the partition wall, since this can be done with little installation effort and the construction is error-prone.
  • An advantageous embodiment of the invention provides several parallel to the rotor axes graduation levels. On this additional Divisional levels, which offer the same access to the suction and pressure chamber of the pump as the first graduation level to the connection housing, can be provided with additional functions such as pressure protection, flushing connections, bypass fitting devices, etc.
  • An advantageous embodiment of the invention provides that between the barrel housing part and the terminal housing part, a flat gasket is arranged.
  • the flat design of the dividing plane between the barrel housing part and the connecting housing part allows the use of a flat gasket between the housing parts of the pump.
  • gaskets can be relatively easy to assemble and are durable and error-prone.
  • the flat gaskets offer enormous advantages.
  • An alternative embodiment of the invention provides that an O-ring seal is arranged between the barrel housing part and the connection housing part.
  • connection housing part is provided.
  • the arrangement of a support leg on the connection housing part makes it possible that the connection housing part is supported independently from the ground. This is of particular advantage when the barrel housing part is disassembled for maintenance and the terminal housing part remains in the connected tube assembly. As a result, the connection housing part does not burden the pipe network during maintenance work. In addition, this means a center suspension is possible. In addition, this can be mechanically decoupled the barrel housing part.
  • the rotors are drivable via a drive arranged in a drive housing part of the multi-part housing.
  • the arrangement of the drive in a drive housing part increases the modularity of the pump housing parts. Different drive housing parts and connection housing parts can be combined with different drives to adapt the screw pump to the requirements of the To be able to optimally adapt the purpose and location of use.
  • the drive can be connected directly via a guided out of the housing shaft.
  • the drive comprises a magnetic coupling.
  • a magnetic coupling in the drive of the screw pump, a mechanical separation between the pumped medium and the drive unit can be realized, which enables the safe delivery of, for example, flammable or otherwise reactive or toxic fluids.
  • the housing between the barrel housing part and the drive housing part has a plane extending graduation plane.
  • the plane dividing plane offers simple and durable sealing possibilities between the housing parts of the pump housing.
  • a flat gasket is arranged between the barrel housing part and the drive housing part.
  • the plane configuration of the dividing plane between the barrel housing part and the drive housing part allows the use of a flat gasket between the housing parts of the pump.
  • flat gaskets can be relatively easy to assemble, inexpensive, durable and error-prone.
  • An alternative embodiment of the invention provides that between the barrel housing part and the drive housing part, an O-ring seal is arranged.
  • a further advantageous embodiment is that the barrel housing part is heated. With the barrel housing part so that directly placed in the barrel housing part rotors are directly heated.
  • the direct heating of the barrel housing a promotion of media is possible, which are liquid only in the heated state.
  • These may in particular be plastics, for example MDI plastics.
  • Figure 1 is a schematic representation of a screw pump according to the invention
  • Figure 2 is another schematic representation of a screw pump according to the invention
  • Figure 3 is a schematic sectional view of a screw pump according to the invention
  • FIG. 4 shows another schematic sectional view of a screw pump according to the invention
  • Figure 5 is another schematic sectional view of a screw pump according to the invention.
  • Figure 6 is another schematic sectional view of a screw pump according to the invention.
  • Figure 7 is a schematic exploded view of a screw pump according to the invention.
  • FIG. 1 designated by the reference numeral 1, a screw pump 1 is shown schematically.
  • the illustration according to FIG. 1 shows a screw pump 1, which comprises a multi-part housing 2.
  • the housing 2 comprises a running housing part 7 and a connection housing part 15 as well as a drive housing part 21.
  • these housing parts 7, 15, 21 further housing part components for attachment to these housing parts 7, 15, 21 may be provided.
  • a drain housing for mounting on the housing parts 7, 15, 21 may be provided, wherein the drain housing preferably comprises components which allow emptying of the screw pump 1 for maintenance.
  • an attachment housing with flushing connections for checking and cleaning the screw pump 1 may be provided.
  • a pressure limiting valve housing and a bypass housing are also possible for mounting on the modular housing parts 7, 15, 21 of the screw pump 1.
  • a mountable pressure compensation housing with lines for pressure equalization of the screw spindle pump rotors.
  • cultivation of a separate recirculation housing for example, to provide a controlled recirculation of fluid in capacity adjustments, may be provided.
  • a safety valve adapter housing as an attachment to the housing parts 7, 15, 21 of the screw pump 1, via which safety valves or rupture discs can be connected.
  • An attachable transmission hood is also foreseeable.
  • Further modular additional housing with additional functions are possible. In order to attach the module-like additional housing (not shown) to the housing 2 of the screw pump 1 a plurality of cover plates 25 are provided on the barrel housing part 7, which can be removed for mounting an additional housing.
  • the cover plates 25 are also used for easier maintenance, since they cover openings in the interior of the pump housing 2, for example, to the suction chamber 1 1.
  • the suction-side connection element 13 and the pressure-side connection element 14 are arranged on a common connection housing part 15 of the multi-part housing 2.
  • the connection housing part 15 is formed in one piece. This facilitates the assembly with the other housing parts 7, 21 of the pump 1, since fewer parts have to be aligned with each other.
  • the separate configuration of the connection housing part 15 makes it possible, by replacing this component, to change the position of the connection elements 13, 14 on the connection housing part 15, without requiring any changes to the running housing part 7.
  • FIG. 2 shows a screw pump 1 shown schematically. Compared to Figure 1, the perspective is changed, so that a better view of the suction-side connection element 14 is possible.
  • FIG. 3 shows a schematic sectional illustration through the housing 2 of a screw pump 1 according to the invention along a rotor 3, 3a of the screw pump 1.
  • the screw pump 1 comprises two coupled, chamber-forming rotors 3, 3a, each having at least one, at least partially formed, thread-shaped profiling 4, 4a with helical channels 5, 5a and with the channels 5, 5a bounding partitions 6, 6a.
  • the rotors 3, 3a exert in pumping operation an opposing rotor rotation about the rotor axes 10, 10a, so that the partitions 6, 6a of the two rotors 3, 3a engage in a gearwheel-like manner.
  • the running housing part 7 forms with a spindle bore 9, the outer wall for the rotors 3, 3a.
  • the rotors 3, 3a form with the barrel housing part 7 a plurality of delivery chambers 8, 8a for the fluid to be delivered.
  • the delivery chambers 8, 8a migrate axially along the rotor axes 10, 10a due to the rotation of the rotors 3, 3a.
  • the fluid is conveyed from a suction chamber 1 1 in a pressure chamber 12.
  • FIG. 4 Although only two chamber-forming rotors 3, 3a (Fig. 4) are shown in the embodiment, the invention is not limited thereto.
  • further rotors may be provided in the screw pump 1.
  • the rotors 3, 3a are mounted via bearings 26 in the barrel housing part 7. For this purpose, 7 recordings or centerings of the storage are housed in the barrel housing part.
  • the alignment and storage of the rotors 3, 3a in the barrel housing part 7 can be done very easily.
  • the one-piece design of the barrel housing part 7 offers, in particular together with the bearing of the rotors 3, 3a in the barrel housing part 7, the possibility of not having to consider additional tolerances by further components when positioning the rotors 3, 3a.
  • the terminal housing part 15 together with the barrel housing part 7 forms the suction chamber 1 1 and the pressure chamber 12.
  • the connection housing part 15 has between the suction chamber 1 1 and the pressure chamber 12 a partition 17.
  • a pressure compensation element 18 is arranged, which can derive an overpressure valve generated in the pressure chamber 12 pressure in the direction of the suction chamber 1 1 and thus prevents damage to the pump and connected to the screw pump 1 pipe system.
  • the housing 2 has a plane, parallel to the rotor axes 10, 10 a extending graduation plane 16.
  • This dividing plane 16 forms a connecting flange between the connecting housing part 15 and the barrel housing part 7.
  • the rotors 3, 3a are driven for pumping operation via a drive 22 arranged in a drive housing part 21 of the multi-part housing 2.
  • This drive 22 comprises a magnetic coupling which is arranged in a drive housing part 21 designed as a flange housing.
  • FIG. 4 discloses a schematic sectional view through the module-like housing 2 of a screw pump 1 according to the invention from the perspective of the rotor axes 10, 10a (FIG. 3).
  • the multi-part housing 2 of the screw pump 1 comprises the barrel housing part 7, which surrounds the two rotors 3, 3a in an 8-shaped spindle bore 9 without contact.
  • the running housing part 7 thus forms the outer wall for the rotors 3, 3a.
  • the rotors 3, 3a form with the barrel housing part 7 a plurality of delivery chambers 8, 8a (FIG. 3) for the fluid to be delivered.
  • the delivery chambers 8, 8a ( Figure 3) migrate axially along the rotor axes 10, 10a due to the rotation of the rotors 3, 3a ( Figure 3).
  • the fluid is conveyed from the suction chamber 1 1 in the pressure chamber 12.
  • connection element 13 By way of a suction-side connecting element 13 fluidically connected to the suction chamber 1 1, the medium to be delivered is directed into the suction chamber 11 from a pipe system connected to the connecting element 13 in pumping operation.
  • a fluid-side connected to the pressure chamber 12 pressure-side connection element 14 creates a connection to a pipe system in which the conveyed medium is slid.
  • connecting element 13, 14 come in the area, as shown in the embodiment, connecting flanges 13, 14 in question.
  • the housing 2 has between the barrel housing part 7 and the connection housing part 15 has a largely planar, substantially parallel to the rotor axes 10, 10 a extending division plane 16. This parting plane 16 forms a connecting flange between the connecting housing part 15 and the barrel housing part 7.
  • FIG. 5 shows a schematic sectional view of a screw pump 1 according to the invention through the connection housing part 15 and the drive housing part 21 with drive 22.
  • the cutting plane runs parallel to the rotor axes 10, 10a (FIG. 3) and the division plane 16 (FIGS. 4 and 6). It is easy to see that the connection housing part 15 together with the barrel housing part 7 forms the suction chamber 1 1 and the pressure chamber 12.
  • the connection housing part 15 has a partition wall 17 between the suction chamber 1 1 and the pressure chamber 12. This partition 17 may be designed differently depending on the requirements at the site of the pump 1, for example, to adjust the conveying direction of the pump 1.
  • FIG. 5 shows a schematic sectional view of a screw pump 1 according to the invention through the connection housing part 15 and the drive housing part 21 with drive 22.
  • the cutting plane runs parallel to the rotor axes 10, 10a (FIG. 3) and the division plane 16 (FIGS. 4 and 6). It is easy to see that the connection housing part 15 together with the barrel housing part 7 forms the
  • FIG. 6 shows a schematic sectional view of a screw pump 1 according to the invention through the dividing plane 16 (FIG. 4).
  • the dividing plane 16 runs through the suction chamber 11 and the pressure chamber 12.
  • a flat gasket 19 is arranged on the plane dividing plane 16 between the running housing part 7 and the connection housing part 15 (FIG , Since the cut also passes through the drive housing part 21 and the drive 22, the flat seal 24 located between the housing parts can be seen on the dividing plane 23 between the drive housing part 21 and the running housing part 7.
  • FIG. 7 discloses a schematic exploded view of a screw pump 1 according to the invention.
  • the terminal housing part 15 is lifted from the barrel housing part 7, so that the likewise raised flat seal 19 and the suction chamber 1 1 and the pressure chamber 12 can be seen. It is particularly advantageous that all pump elements can be pre-assembled and tested before assembly with the connection housing part 15 in the barrel housing part 7, including the seals or the magnetic drive.
  • terminal housing parts 15 may be provided on several sides of the barrel housing part 7.

Landscapes

  • 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 (1), en particulier une pompe à double vie, comprenant un carter (2, 7, 15, 21) en plusieurs parties et au moins deux rotors (3, 3a) couplés formant une chambre et présentant chacun au moins un profilage (4, 4a) de type filetage au moins par endroits et doté de canaux (5, 5a) en forme de vis ainsi que de parois de séparation (6, 6a) délimitant les canaux (5, 5a), les rotors (3, 3a) exercent une rotation rotorique en sens opposé et les parois de séparation (6, 6a) s'engrènent à la manière de dents, une partie carter périphérique (7), laquelle partie de carter de vis (7) entoure les rotors (3, 3a) sans contact, lesdits rotors (3, 3a) formant conjointement avec la partie carter périphérique (7) au moins une chambre de refoulement (8, 8a) pour le fluide à refouler, la chambre de refoulement (8, 8a) se déplace axialement le long des axes de rotor (10, 10a) et refoule le fluide, d'une chambre d'aspiration à un espace de pression (12), un élément de raccordement côté aspiration (13), en communication fluidique avec la chambre d'aspiration (11) et un élément de raccordement côté pression (14), en communication fluidique avec avec l'espace de pression (12), l'élément de raccordement côté aspiration (13) et l'élément de raccordement côté pression (14) étant montés sur une partie carter de raccordement (15) du carter (2, 7, 15, 21) en plusieurs parties, ledit carter (2, 7, 15, 21) présentant un plan de séparation (16) plan, parallèle aux axes de rotor (10, 10a), situé entre la partie carter périphérique (7) et la partie carter de raccordement (15).
EP17801607.7A 2016-10-27 2017-10-27 Pompe à broche hélicoïdale, divisée horizontalement Active EP3532729B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016120579.6A DE102016120579B3 (de) 2016-10-27 2016-10-27 Horizontal geteilte Schraubenspindelpumpe
PCT/EP2017/077555 WO2018078073A1 (fr) 2016-10-27 2017-10-27 Pompe à broche hélicoïdale, divisée horizontalement

Publications (2)

Publication Number Publication Date
EP3532729A1 true EP3532729A1 (fr) 2019-09-04
EP3532729B1 EP3532729B1 (fr) 2020-12-30

Family

ID=60421733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17801607.7A Active EP3532729B1 (fr) 2016-10-27 2017-10-27 Pompe à broche hélicoïdale, divisée horizontalement

Country Status (7)

Country Link
US (1) US11530699B2 (fr)
EP (1) EP3532729B1 (fr)
CN (1) CN110036202B (fr)
DE (1) DE102016120579B3 (fr)
ES (1) ES2858000T3 (fr)
RU (1) RU2019116010A (fr)
WO (1) WO2018078073A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018116772B3 (de) * 2018-07-11 2019-11-07 Netzsch Pumpen & Systeme Gmbh Schraubenspindelpumpe und Verfahren zur Wartung einer solchen Schraubenspindelpumpe
DE102019128602B3 (de) 2019-10-23 2021-02-11 Leistritz Pumpen Gmbh Schraubenspindelpumpe
GB2590664A (en) * 2019-12-23 2021-07-07 Edwards S R O Sealing between a cover plate and the pumping chamber or a multiple stage pump

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US11530699B2 (en) 2022-12-20
WO2018078073A1 (fr) 2018-05-03
EP3532729B1 (fr) 2020-12-30
ES2858000T3 (es) 2021-09-29
DE102016120579B3 (de) 2018-04-05
CN110036202B (zh) 2020-10-30
US20190249662A1 (en) 2019-08-15
RU2019116010A (ru) 2020-11-27
CN110036202A (zh) 2019-07-19

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