EP3532729B1 - Pompe à broche hélicoïdale, divisée horizontalement - Google Patents

Pompe à broche hélicoïdale, divisée horizontalement Download PDF

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Publication number
EP3532729B1
EP3532729B1 EP17801607.7A EP17801607A EP3532729B1 EP 3532729 B1 EP3532729 B1 EP 3532729B1 EP 17801607 A EP17801607 A EP 17801607A EP 3532729 B1 EP3532729 B1 EP 3532729B1
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EP
European Patent Office
Prior art keywords
housing part
screw
screw pump
rotors
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17801607.7A
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German (de)
English (en)
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EP3532729A1 (fr
Inventor
Thomas Eschner
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Klaus Union GmbH and Co KG
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Klaus Union GmbH and Co KG
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Application filed by Klaus Union GmbH and Co KG filed Critical Klaus Union GmbH and Co KG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—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 multi-flow double screw pump or double screw pump, comprising a multi-part housing and at least two coupled, chamber-forming rotors each with at least one at least regionally formed, thread-shaped profile with helical channels and with partition walls delimiting the channels, wherein the rotors exert a counter-rotating rotor rotation and the partition walls mesh with one another, a barrel housing part, the barrel housing part enclosing the rotors without contact, the rotors with the barrel housing part forming at least one delivery chamber for the fluid to be delivered, the delivery chamber moving axially along the rotor axes and conveys the fluid from a suction space into a pressure space, a suction-side connection element fluidly connected to the suction space and a pressure-side connection fluidically connected to the pressure space luss element.
  • Such screw pumps are from the DE 716 161 A , DE 197 49 572 A1 , DE 20 01 000 A , DE 20 01 015 A , GB 645 817 A and U.S. 5,601,414 A known.
  • Such a pump is suitable for pumping fluids such as liquid plastic or other chemical products.
  • the disadvantage of the known pump is the high manufacturing and maintenance costs.
  • the bearing of the rotors in the removable side wall of the pump housing ensures complex adjustments of the rotors after the pump has been dismantled for cleaning and maintenance. Production from cast steel is difficult due to the complicated shape and double-walled sections between the spindle bore and the pump housing.
  • the EP 2 606 234 A2 relates to a rotary lobe pump for conveying a fluid medium containing solids, comprising an inlet opening and an outlet opening for the medium to be conveyed, two rotary lobes arranged in a pump housing with interlocking rotary lobe vanes, each of the two rotary lobes being fixed torque-proof on a respective shaft and being drivable by the respective shaft is, and wherein the two shafts are coupled to one another by a transmission arranged in a transmission housing, the inlet opening and the outlet opening being arranged on a connection housing.
  • the invention therefore poses the problem of specifying a screw pump which enables simple 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, the housing having a largely planar dividing plane running parallel to the rotor axes between the barrel housing part and the connection housing part.
  • a modular design of the pump can be achieved in that different barrel housing parts and different connection housing parts can be combined with one another.
  • the housing parts have almost no undercuts and no double walls, so that the production of the parts using the casting process is significantly simplified.
  • special materials can also be processed well.
  • the plane dividing plane also offers simple and long-lasting sealing options between the housing parts of the pump housing.
  • the arrangement of the suction-side and pressure-side connection elements in a common connection housing part which can be easily separated from the barrel housing part by the dividing plane, also enables the connection housing part to be Maintenance work in the pipe network remains. This means that the suction-side and pressure-side connection elements can remain connected to the pipes during maintenance work.
  • Multi-flow screw pumps are understood to mean pumps in whose barrel housing part two or more pairs of screws are arranged, which then work in parallel between a common pressure chamber and a common suction chamber.
  • the dividing plane runs through the suction chamber and the pressure chamber.
  • Such a course of the dividing plane offers advantages in terms of modularity and maintenance.
  • such a course of the dividing plane has further advantages in production, since hardly any undercuts are required.
  • the dividing plane does not run within the spindle axes, so that these are not directly exposed when the barrel housing part and the connecting housing part are dismantled.
  • the rotors are mounted in the barrel housing part.
  • the centering of the bearing or the bearing itself are contained in the barrel housing part.
  • the bearing of the rotors in the running housing part makes assembly during production easier and also reduces the effort involved in maintaining the pump.
  • the barrel housing part also has the centerings for mounting the rotors.
  • the position of the rotors in the barrel housing part can be checked before the connection to the connection housing part. This makes it easy to ensure that the barrel housing part encloses the rotors without contact and that the rotors form at least one tight delivery chamber with the barrel housing part.
  • the barrel housing part is designed in one piece.
  • the one-piece design of the barrel housing part offers particular advantages in the alignment and mounting of the rotors in the barrel housing part.
  • the one-piece design of the barrel housing part in particular together with the mounting of the rotors in the barrel housing part, offers the advantage that when the rotors are positioned, none additional tolerances must be taken into account during assembly. Such additional tolerances usually result from the fact that the housing part that forms the delivery chamber with the rotors is different from the component that supports the rotors.
  • connection housing part is designed in one piece.
  • a one-piece design of the connection housing part facilitates assembly with the other housing parts of the pump and the pipe system connected to the pump.
  • the production of the connection housing part is also significantly simplified by the one-piece design.
  • connection housing part forms the suction chamber and the pressure chamber together with the barrel housing part.
  • the formation of the suction chamber and the pressure chamber by the connection housing part and the barrel housing part offers easy accessibility to the spaces formed by the housing parts when the barrel housing part is dismantled from the connecting housing part.
  • connection housing part has a partition between the suction chamber and the pressure chamber.
  • This partition wall can be designed differently depending on the requirements at the place of use of the pump in order, for example, to adapt the conveying direction of the pump. If a so-called "in line" configuration of the connection elements is required, the partition between the suction chamber and the pressure chamber can be designed differently than with other desired configurations of the connection housing part, in which the connection elements are arranged offset to one another or at an angle.
  • the separation of the barrel housing part and the connection housing part also creates flexible adjustment options for the pump thanks to the modularity gained.
  • the embodiment is further advantageous that a pressure compensation element is arranged in the partition.
  • the pressure compensation 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 is clogged.
  • it would be designed as an overload valve
  • Pressure compensation element divert the overpressure generated in the pressure chamber in the direction of the suction chamber, thus preventing damage to the pump and the pipe system.
  • the arrangement of a pressure compensation element in the partition wall is particularly advantageous, since this can be achieved with little installation effort and the construction is not prone to errors.
  • An advantageous embodiment of the invention provides several planes of division parallel to the rotor axes.
  • additional partition levels which offer the same access to the suction and pressure chamber of the pump as the first partition level to the connection housing, additional functions such as Pressure protection, flushing connections, bypass fittings, etc. are provided.
  • An advantageous embodiment of the invention provides that a flat seal is arranged between the barrel housing part and the connection housing part.
  • the planar design of the dividing plane between the barrel housing part and the connection housing part enables the use of a flat seal between the housing parts of the pump.
  • a particular advantage here is that flat seals are relatively easy to assemble and have a long service life and are not prone to faults.
  • Flat gaskets offer enormous advantages, especially with regard to media and temperature resistance.
  • 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 At least one support foot is provided on the connection housing part.
  • the arrangement of a support foot on the connection housing part enables the connection housing part to be supported independently from the floor. This is of particular advantage if the barrel housing part is dismantled for maintenance and the connection housing part remains in the connected pipe assembly. As a result, the connection housing part does not stress the pipe assembly during maintenance work. In addition, a central suspension is possible. In addition, the barrel housing part can thereby be mechanically decoupled.
  • a preferred embodiment provides that the rotors can be driven 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 barrel housing parts and connection housing parts can be combined with different drives in order to be able to optimally adapt the screw pump to the requirements of the intended use and location.
  • the drive can be connected directly via a shaft guided out of the housing.
  • the drive comprises a magnetic coupling.
  • the embodiment is further advantageous that the housing has a planar dividing plane between the barrel housing part and the drive housing part.
  • the flat parting plane offers simple and long-lasting sealing options between the housing parts of the pump housing.
  • a further advantageous embodiment is that a flat seal is arranged between the barrel housing part and the drive housing part.
  • the planar design of the dividing plane between the running housing part and the drive housing part enables the use of a flat seal between the housing parts of the pump.
  • a particular advantage here is that flat seals can be installed relatively easily, are inexpensive, have a long service life and are not prone to faults.
  • An alternative embodiment of the invention provides that an O-ring seal is arranged between the barrel housing part and the drive housing part.
  • the barrel housing part can be heated.
  • the rotors placed directly in the barrel housing part can also be heated directly.
  • the direct heating of the barrel housing part enables media to be conveyed that are only liquid when heated.
  • These can in particular be plastics, for example MDI plastics.
  • FIG. 1 Denoted by the reference number 1, a screw pump 1 is shown schematically.
  • the representation according to Figure 1 shows a screw pump 1 comprising a multi-part housing 2.
  • the housing 2 comprises a barrel housing part 7 and a connection housing part 15 as well as a drive housing part 21.
  • housing part components can be provided for attachment to these housing parts 7, 15, 21.
  • an emptying housing can be provided for mounting on the housing parts 7, 15, 21, the emptying housing preferably comprising components that allow the screw pump 1 to be emptied for maintenance.
  • an add-on housing with flushing connections for checking and cleaning the screw pump 1 can be provided.
  • a pressure-limiting valve housing and a bypass housing are also possible for assembly on the modular housing parts 7, 15, 21 of the screw pump 1.
  • a mountable pressure compensation housing with lines for pressure compensation of the screw pump rotors can also be provided.
  • a separate recirculation housing can be added, for example to provide a controlled recirculation of fluid in the event of capacity adjustments.
  • 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 bursting disks can be connected.
  • An attachable gear cover can also be provided.
  • Further modular additional housings with additional functions are possible.
  • a plurality of cover plates 25 are provided on the barrel housing part 7 and can be removed for the assembly of an additional housing.
  • the cover plates 25 also serve to simplify maintenance, since they cover openings into the interior of the pump housing 2, for example to the suction chamber 11. How good in Figure 1 As can be seen, 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.
  • connection housing part 15 is formed in one piece. This facilitates assembly with the further housing parts 7, 21 of the pump 1, since fewer parts have to be aligned with one another.
  • the separate The configuration of the connection housing part 15 makes it possible, by exchanging this component, to change the position of the connection elements 13, 14 on the connection housing part 15 without having to make changes to the barrel housing part 7 for this purpose. In this way, for example, the conveying direction of the pump 1 can be changed without the barrel housing part 7 having to be adapted.
  • the connection housing part 15 has a total of four support feet 20 in order to be able to support itself independently from the ground. Foot heating is provided on the support feet 20.
  • the barrel housing part 7 can be heated by means of these or other heating elements that can be attached, for example in order to ensure the desired viscosity of the fluid being conveyed.
  • FIG. 2 shows a screw pump 1 shown schematically. Across from Figure 1 the perspective is changed so that a better view of the suction-side connection element 14 is possible.
  • the Figure 3 shows a schematic sectional view 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 with at least one at least regionally formed, thread-shaped profile 4, 4a with helical channels 5, 5a and with the dividing walls 6, 6a delimiting the channels 5, 5a.
  • the rotors 3, 3a exert a counter-rotating rotor rotation about the rotor axes 10, 10a during pumping operation, so that the partition walls 6, 6a of the two rotors 3, 3a mesh with one another like a gear.
  • the barrel housing part 7 forms the outer wall for the rotors 3, 3a with a spindle bore 9.
  • 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 11 into a pressure chamber 12.
  • Further rotors can be provided in the screw pump 1.
  • the rotors 3, 3a are mounted in the barrel housing part 7 via bearings 26. For this purpose 7 recordings or centering of the bearing are housed in the barrel housing part.
  • connection housing part 15 together with the barrel housing part 7 forms the suction space 11 and the pressure space 12.
  • the connection housing part 15 has a partition 17 between the suction space 11 and the pressure space 12.
  • a pressure compensation element 18 is arranged in the partition wall 17, which as an overload valve can divert an overpressure generated in the pressure chamber 12 in the direction of the suction chamber 11 and thus prevents damage to the pump and the pipe system connected to the screw pump 1.
  • the housing 2 has a planar dividing plane 16 running parallel to the rotor axes 10, 10a.
  • This dividing plane 16 forms a connection flange between the connection housing part 15 and the barrel housing part 7.
  • the rotors 3, 3a are driven for the 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.
  • a further planar dividing plane 23 is advantageously provided between the barrel housing part 7 and the drive housing part 21.
  • a further flat seal 24 is arranged on this parting plane 23 between the barrel housing part 7 and the drive housing part 21.
  • the further attachable additional housings are preferably also connected to the pump housing 2 via planar dividing planes and furthermore preferably sealed off from one another by further flat seals on these dividing planes. Further dividing levels within the barrel housing part 7, the connection housing part 15 or the drive housing part 21 are possible. Here, too, there are other flat seals for sealing the housing parts against one another.
  • the Figure 4 discloses a schematic sectional view through the modular 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 the two rotors 3, 3a in an 8-shaped Spindle bore 9 encloses without contact.
  • the barrel housing part 7 thus forms the outer wall for the rotors 3, 3a.
  • the rotors 3, 3a form several delivery chambers 8, 8a ( Fig. 3 ) for the fluid to be pumped. In the pumping mode, the delivery chambers 8, 8a move ( Fig.
  • connection flanges 13, 14 can be used as connection elements 13, 14 in the area.
  • the housing 2 has between the barrel housing part 7 and the connection housing part 15 a largely planar parting plane 16 which runs largely parallel to the rotor axes 10, 10a.
  • This dividing plane 16 forms a connection flange between the connection housing part 15 and the barrel housing part 7.
  • the connecting housing part 15 connects the process connections (suction line, pressure line) on the connection elements 13, 14 with the barrel housing part 7.
  • the Figure 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 sectional plane runs parallel to the rotor axes 10, 10a ( Fig. 3 ) and the partition level 16 ( Fig. 4 u. 6).
  • the connection housing part 15 together with the barrel housing part 7 forms the suction chamber 11 and the pressure chamber 12.
  • the connection housing part 15 has a partition 17 between the suction chamber 11 and the pressure chamber 12. This partition 17 can be designed differently depending on the requirements at the place of use of the pump 1, for example to adapt the conveying direction of the pump 1.
  • the Figure 6 shows a schematic sectional view of a screw pump 1 according to the invention through the parting plane 16 ( Fig. 4 ).
  • the parting plane 16 runs through the suction chamber 11 and the pressure chamber 12.
  • a flat seal 19 is arranged on the planar parting plane 16. Since the section also runs through the drive housing part 21 and the drive 22, the flat seal 24 located between the housing parts can be seen on the parting plane 23 between the drive housing part 21 and the barrel housing part 7.
  • the Figure 7 discloses a schematic exploded view of a screw pump 1 according to the invention.
  • the connection housing part 15 is raised from the barrel housing part 7 so that the flat seal 19, which has also been raised, and the suction chamber 11 and the pressure chamber 12 can be seen.
  • a multi-stage pump can advantageously be implemented.
  • connection housing parts 15 can be provided on several sides of the barrel housing part 7.

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

Claims (17)

  1. Pompe à vis (1), en particulier pompe à double vis à simple flux ou à flux multiples, comprenant un boîtier (2, 7, 15, 21) en plusieurs parties et au moins deux rotors (3, 3a) couplés de formation de chambre avec respectivement au moins un profilage (4, 4a) fileté réalisé au moins par endroits avec des canaux (5, 5a) de forme hélicoïdale et avec des cloisons de séparation (6, 6a) délimitant les canaux (5, 5a), dans laquelle les rotors (3, 3a) exercent une rotation de rotor en sens contraire et les cloisons de séparation (6, 6a) s'imbriquent les unes dans les autres à la manière de roue dentée, une partie de boîtier mobile (7), dans laquelle la partie de boîtier mobile (7) entoure sans contact les rotors (3, 3a), dans laquelle les rotors (3, 3a) forment avec la partie de boîtier mobile (7) au moins une chambre de refoulement (8, 8a) pour le fluide à refouler, dans laquelle la chambre de refoulement (8, 8a) se déplace de manière axiale le long des axes de rotor (10, 10a) et refoule le fluide depuis un compartiment d'aspiration (11) dans un compartiment de pression (12), un élément de raccordement côté aspiration (13) relié fluidiquement au compartiment d'aspiration (11) et un élément de raccordement côté pression (14) relié fluidiquement au compartiment de pression (12),
    caractérisée en ce
    que l'élément de raccordement côté aspiration (13) et l'élément de raccordement côté pression (14) sont disposés au niveau d'une partie de boîtier de raccordement (15) du boîtier (2, 7, 15, 21) en plusieurs parties, dans laquelle le boîtier (2, 7, 15, 21) présente entre la partie de boîtier mobile (7) et la partie de boîtier de raccordement (15), un plan de division (16) plan s'étendant de manière parallèle par rapport aux axes de rotor (10, 10a).
  2. Pompe à vis (1) selon la revendication 1, caractérisée en ce que le plan de division (16) s'étend à travers le compartiment d'aspiration (11) et le compartiment de pression (12).
  3. Pompe à vis (1) selon la revendication 1 ou 2, caractérisée en ce que les rotors (3, 3a) sont montés dans la partie de boîtier mobile (7).
  4. Pompe à vis (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la partie de boîtier mobile (7) est réalisée en une partie.
  5. Pompe à vis (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la partie de boîtier de raccordement (15) est réalisée en une partie.
  6. Pompe à vis (1) selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la partie de boîtier de raccordement (15) forme conjointement avec la partie de boîtier mobile (7) le compartiment d'aspiration (11) et le compartiment de pression (12).
  7. Pompe à vis (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la partie de boîtier de raccordement (15) présente une cloison de séparation (17) entre le compartiment d'aspiration (11) et le compartiment de pression (12).
  8. Pompe à vis (1) selon la revendication 7, caractérisée en ce qu'un élément de compensation de pression (18) est disposé dans la cloison de séparation (17).
  9. Pompe à vis (1) selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'un joint d'étanchéité plat (19) est disposé entre la partie de boîtier mobile (7) et la partie de boîtier de raccordement (15).
  10. Pompe à vis (1) selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'un joint d'étanchéité torique est disposé entre la partie de boîtier mobile (7) et la partie de boîtier de raccordement (15).
  11. Pompe à vis (1) selon l'une quelconque des revendications 1 à 10, caractérisée en ce qu'au moins un pied de support (20) est prévu au niveau de la partie de boîtier de raccordement (15).
  12. Pompe à vis (1) selon l'une quelconque des revendications 1 à 11, caractérisée en ce que les rotors (3, 3a) peuvent être entraînés par l'intermédiaire d'un entraînement (22) disposé dans une partie de boîtier d'entraînement (21) du boîtier (2, 7, 15, 1) en plusieurs parties.
  13. Pompe à vis (1) selon la revendication 12, caractérisée en ce que l'entraînement (22) comprend un couplage magnétique.
  14. Pompe à vis (1) selon la revendication 12 ou 13, caractérisée en ce que le boîtier (2, 7, 15, 21) présente entre la partie de boîtier mobile (7) et la partie de boîtier d'entraînement (21) un plan de division (23) s'étendant de manière plane.
  15. Pompe à vis (1) selon l'une quelconque des revendications 12 à 14, caractérisée en ce qu'un joint d'étanchéité plat (24) est disposé entre la partie de boîtier mobile (7) et la partie de boîtier d'entraînement (21).
  16. Pompe à vis (1) selon l'une quelconque des revendications 12 à 14, caractérisée en ce qu'un joint d'étanchéité torique est disposé entre la partie de boîtier mobile (7) et la partie de boîtier d'entraînement (21).
  17. Pompe à vis (1) selon l'une quelconque des revendications 1 à 16, caractérisée en ce que la partie de boîtier mobile (7) peut être réchauffée.
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

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

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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)

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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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Also Published As

Publication number Publication date
US11530699B2 (en) 2022-12-20
WO2018078073A1 (fr) 2018-05-03
ES2858000T3 (es) 2021-09-29
DE102016120579B3 (de) 2018-04-05
CN110036202B (zh) 2020-10-30
US20190249662A1 (en) 2019-08-15
EP3532729A1 (fr) 2019-09-04
RU2019116010A (ru) 2020-11-27
CN110036202A (zh) 2019-07-19

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