EP3532729A1 - Horizontally split screw-spindle pump - Google Patents

Horizontally split screw-spindle pump

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)
French (fr)
Other versions
EP3532729B1 (en
EP3532729B2 (en
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/en
Publication of EP3532729B1 publication Critical patent/EP3532729B1/en
Application granted granted Critical
Publication of EP3532729B2 publication Critical patent/EP3532729B2/en
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

The invention relates to a screw pump (1), in particular a double screw pump, comprising a multiple-piece housing (2, 7, 15, 21) and at least two coupled rotors (3, 3a) which form chambers with in each case at least one thread-shaped profile (4, 4a) which is configured at least in regions with helical channels (5, 5a) and with dividing walls (6, 6a) which delimit the channels (5, 5a), wherein the rotors (3, 3a) perform an opposed rotor rotation, and the dividing walls (6, 6a) engage into one another in a gearwheel-like manner, a running housing part (7), wherein the running housing part (7) encloses the rotors (3, 3a) without contact, wherein the rotors (3, 3a) form, with the running housing part (7), at least one conveying chamber (8, 8a) for the fluid to be conveyed, wherein the conveying chamber (8, 8a) migrates axially along the rotor axis (10, 10a) and conveys the fluid from a suction chamber (11) into a pressure chamber (12), a suction-side connector element (13) which is connected fluidically to the suction chamber (11), and a pressure-side connector element (14) which is connected fluidically to the pressure chamber (12), wherein the suction-side connector element (13) and the pressure-side connector element (14) are arranged on a connector housing part (15) of the multiple-piece housing (2, 7, 15, 21), wherein the housing (2, 7, 15, 21) has a planar dividing plane (16) which runs parallel to the rotor axes (10, 10a) between the running housing part (7) and the connector housing part (15).

Description

Horizontal geteilte SchraubensDindelDumpe Die Erfindung betrifft eine Schraubenpumpe oder Schraubenspindelpumpe, insbesondere eine ein- oder mehrflutige Doppelschraubenpumpe oder Doppelschraubenspindelpumpe, umfassend ein mehrteiliges Gehäuse und wenigstens zwei gekoppelte, kammerbildende Rotoren mit jeweils wenigstens einer zumindest bereichsweise ausgebildeten, gewindeförmigen Profilierung mit schraubenförmigen Kanälen und mit die Kanäle begrenzenden Trennwänden, wobei die Rotoren eine gegensinnige Rotordrehung ausüben und die Trennwände zahnradartig ineinandergreifen, ein Laufgehäuseteil, wobei das Laufgehäuseteil die Rotoren kontaktfrei umschließt, wobei die Rotoren mit dem Laufgehäuseteil wenigstens eine Förderkammer für das zu fördernde Fluid bilden, wobei die Förderkammer axial entlang der Rotorenachsen wandert und das Fluid von einem Saugraum in einen Druckraum fördert, ein mit dem Saugraum fluidtechnisch verbundenes saugseitiges Anschlusselement und ein mit dem Druckraum fluidtechnisch verbundenes druckseitiges Anschlusselement.  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.
Derartige Schraubenpumpen sind aus der DE 716 161 A, DE 197 49 572 A1 , DE 20 01 000 A, DE 20 01 015 A, GB 645 817 A und US 5 601 414 A bekannt. Eine solche Pumpe eignet sich zur Förderung von Fluiden, wie beispielsweise flüssigem Kunststoff oder anderen chemischen Produkten. Nachteilig an der vorbekannten Pumpe ist jedoch der hohe Fertigungs- und Wartungsaufwand. Insbesondere die Lagerung der Rotoren in der abnehmbaren Seitenwand des Pumpengehäuses sorgt für aufwendige Justierungen der Rotoren nach Zerlegung der Pumpe zur Reinigung und Wartung. Die Herstellung aus Stahlguss ist aufgrund der komplizierten Form und abschnittsweiser Doppelwandigkeit zwischen Spindelbohrung und Pumpengehäuse schwierig. Der Erfindung stellt sich somit das Problem, eine Schraubenpumpe anzugeben, die eine einfache Fertigung und Wartung ermöglicht. 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. However, a disadvantage of the previously known pump is the high production and maintenance costs. In particular, 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.
Erfindungsgemäß wird dieses Problem durch eine Schraubenpumpe mit den Merkmalen des Patentanspruchs 1 gelöst. Erfindungsgemäß zeichnet sich die Schraubenpumpe dadurch aus, dass das saugseitige Anschlusselement und das druckseitige Anschlusselement an einem Anschlussgehäuseteil des mehrteiligen Gehäuses angeordnet sind, wobei das Gehäuse zwischen dem Laufgehäuseteil und dem Anschlussgehäuseteil eine weitgehend plane, parallel zu den Rotorenachsen verlaufende Teilungsebene aufweist. According to the invention this problem is solved by a screw pump with the features of claim 1. According to the invention, 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.
Dadurch ist eine deutlich einfachere Fertigung und Wartung möglich. Außerdem kann eine modulare Bauart der Pumpe erreicht werden, indem sich unterschiedliche Laufgehäuseteile und unterschiedliche Anschlussgehäuseteile miteinander kombinieren lassen. Zudem kommen die Gehäuseteile nahezu ohne Hinterschneidungen und ohne doppelte Wandungen aus, sodass die Fertigung der Teile im Gussverfahren deutlich vereinfacht wird. Hierdurch lassen sich neben Guss auch Sondermaterialien gut verarbeiten. Die plane Teilungsebene bietet zudem einfache und langlebige Abdichtungsmöglichkeiten zwischen den Gehäuseteilen des Pumpengehäuses an. Die Anordnung des saugseitigen und druckseitigen Anschlusselementes in einem gemeinsamen Anschlussgehäuseteil, welches sich durch die Teilungsebene vom Laufgehäuseteil einfach trennen lässt, ermöglicht es zudem, dass das Anschlussgehäuseteil bei Wartungsarbeiten im Rohrverbund verbleibt. Das heißt bei Wartungsarbeiten können das saugseitige und das druckseitige Anschlusselement mit den Rohren, verbunden bleiben. As a result, a much simpler production and maintenance is possible. In addition, a modular design of the pump can be achieved by combining different barrel housing parts and different terminal housing parts can be combined. In addition, 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. As a result, not only cast iron but also special materials can be processed well. 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.
Unter mehrflutigen Schraubenpumpen werden Pumpen verstanden, in deren Laufgehäuseteil zwei oder mehr Schraubenpaare angeordnet sind, die dann parallel zwischen einem gemeinsamen Druckraum und einem gemeinsamen Saugraum arbeiten. Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass die Teilungsebene durch den Saugraum und den Druckraum verläuft. Ein derartiger Verlauf der Teilungsebene bietet Vorteile hinsichtlich der Modularität und der Wartung. Zudem hat ein derartiger Verlauf der Teilungsebene weitere Vorteile bei der Fertigung, da kaum Hinterschneidungen erforderlich sind. Die Teilungsebene verläuft nicht innerhalb der Spindelachsen, so dass diese bei Demontage von Laufgehäuseteil und Anschlussgehäuseteil nicht direkt freigelegt werden. Under multi-screw pumps are understood pumps in the 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. According to an advantageous embodiment of the invention it is provided that the dividing plane extends through the suction chamber and the pressure chamber. Such a graduation plane provides advantages in terms of modularity and maintenance. In addition, such a course of the division level further advantages in the production, since hardly undercuts are required. The division level does not run within the spindle axes, so that they are not directly exposed when disassembling the barrel housing part and connection housing part.
Eine vorteilhafte Ausführung ist, dass die Rotoren in dem Laufgehäuseteil gelagert sind. Die Zentrierung der Lagerung oder die Lagerung selber sind im Laufgehäuseteil enthalten. Die Lagerung der Rotoren im Laufgehäuseteil macht die Montage bei der Fertigung einfacher und reduziert zudem den Aufwand bei der Wartung der Pumpe. Zur Lagerung der Rotoren in dem Laufgehäuseteil weist dieses auch die Zentrierungen für die Lagerung der Rotoren auf. Außerdem lässt sich die Position der Rotoren in dem Laufgehäuseteil aufgrund der besseren Zugänglichkeit vor der Verbindung mit dem Anschlussgehäuseteil überprüfen. Hierdurch kann einfach sichergestellt werden, dass das Laufgehäuseteil die Rotoren kontaktfrei umschließt und dass die Rotoren mit dem Laufgehäuseteil mindestens eine dichte Förderkammer ausbilden. An advantageous embodiment is that 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. For storage of the rotors in the barrel housing part, this also has the centerings for the bearing of the rotors. In addition, 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.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass das Laufgehäuseteil einteilig ausgebildet ist. Die einteilige Ausbildung des Laufgehäuseteils bietet besondere Vorteile bei der Ausrichtung und Lagerung der Rotoren in dem Laufgehäuseteil. Die einteilige Ausführung des Laufgehäuseteils bietet insbesondere zusammen mit der Lagerung der Rotoren in dem Laufgehäuseteil den Vorteil, dass bei der Positionierung der Rotoren keine zusätzlichen Toleranzen bei der Montage berücksichtigt werden müssen. Solche zusätzlichen Toleranzen ergeben sich üblicherweise dadurch, dass das Gehäuseteil, welches mit den Rotoren die Förderkammer ausbildet von dem Bauteil, welches die Rotoren lagert, verschieden ist. According to an advantageous embodiment of the invention it is provided that 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.
Besonders vorteilhaft ist die Weiterbildung, dass das Anschlussgehäuseteil einteilig ausgebildet ist. Eine einteilige Ausgestaltung des Anschlussgehäuseteils erleichtert die Montage mit den weiteren Gehäuseteilen der Pumpe und dem mit der Pumpe verbundenen Rohrsystem. Auch die Fertigung des Anschlussgehäuseteils ist durch die einteilige Ausbildung deutlich vereinfacht. Particularly advantageous is the development that the terminal 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.
Eine bevorzugte Ausführung sieht vor, dass das Anschlussgehäuseteil mit dem Laufgehäuseteil zusammen den Saugraum und den Druckraum bildet. Die Bildung des Saugraums und des Druckraums durch das Anschlussgehäuseteil und das Laufgehäuseteil bietet eine einfache Zugänglichkeit der durch die Gehäuseteile gebildeten Räume bei Demontage des Laufgehäuseteils vom Anschlussgehäuseteil. A preferred embodiment provides that the 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.
Besonders vorteilhaft ist die Weiterbildung, dass das Anschlussgehäuseteil eine Trennwand zwischen dem Saugraum und dem Druckraum aufweist. Diese Trennwand kann abhängig von den Erfordernissen am Einsatzort der Pumpe unterschiedlich gestaltet sein, um beispielsweise die Förderrichtung der Pumpe anzupassen. Ist eine sogenannte„in line"-Konfiguration der Anschlusselemente erforderlich, kann die Trennwand zwischen dem Saugraum und dem Druckraum anders ausgestaltet sein als bei anderen gewünschten Konfigurationen des Anschlussgehäuseteils, bei denen die Anschlusselemente versetzt zueinander oder unter einem Winkel angeordnet sind. Die Trennung von Laufgehäuseteil und Anschlussgehäuseteil schafft hier ebenfalls flexible Anpassungsmöglichkeiten der Pumpe durch die gewonnene Modularität. Weiter vorteilhaft ist die Ausgestaltung, dass in der Trennwand ein Druckausgleichselement angeordnet ist. Das Druckausgleichselement zwischen Druckraum und Saugraum verhindert Schäden an der Pumpe, sollte beispielsweise das an den Druckraum angeschlossene Rohrsystem verstopft sein. In diesem Fall würde das als Überlastungsventil ausgestaltete Druckausgleichselement den im Druckraum erzeugten Überdruck Richtung Saugraum ableiten und so Schäden an der Pumpe und dem Rohrsystem verhindern. Von besonderem Vorteil ist die Anordnung eines Druckausgleichelements in der Trennwand, da dies mit geringem Montageaufwand zu bewerkstelligen ist und die Konstruktion fehlerunanfällig ist. Eine vorteilhafte Ausführungsform der Erfindung sieht mehrere zu den Rotorachsen parallele Teilungsebenen vor. Auf diesen zusätzlichen Teilungsebenen, die den gleichen Zugang zu Saug- und Druckraum der Pumpe wie die erste Teilungsebene zum Anschlussgehäuse bieten, können weitere Zusatzfunktionen wie z.B. Druckabsicherung, Spülanschlüsse, Bypasspasseinrichtungen, etc. bereitgestellt werden. Eine vorteilhafte Ausführungsform der Erfindung sieht vor, dass zwischen dem Laufgehäuseteil und dem Anschlussgehäuseteil eine Flachdichtung angeordnet ist. Die plane Ausgestaltung der Teilungsebene zwischen Laufgehäuseteil und Anschlussgehäuseteil ermöglicht die Verwendung einer Flachdichtung zwischen den Gehäuseteilen der Pumpe. Hier ist von besonderem Vorteil, dass Flachdichtungen sich relativ einfach montieren lassen und langlebig sowie fehlerunanfällig sind. Insbesondere hinsichtlich der Medien- und Temperaturbeständigkeit bieten die Flachdichtungen enorme Vorteile. Particularly advantageous is the development that the 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 In this case, 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. Here is of particular advantage that gaskets can be relatively easy to assemble and are durable and error-prone. In particular with regard to the resistance to media and temperature, the flat gaskets offer enormous advantages.
Eine alternative Ausführungsform der Erfindung sieht vor, dass zwischen dem Laufgehäuseteil und dem Anschlussgehäuseteil eine O-Ring-Dichtung angeordnet ist. An alternative embodiment of the invention provides that an O-ring seal is arranged between the barrel housing part and the connection housing part.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass an dem Anschlussgehäuseteil mindestens ein Stützfuß vorgesehen ist. Die Anordnung eines Stützfußes an dem Anschlussgehäuseteil ermöglicht es, dass sich das Anschlussgehäuseteil selbstständig vom Boden abstützt. Dies ist von besonderem Vorteil, wenn das Laufgehäuseteil zur Wartung demontiert ist und das Anschlussgehäuseteil im verbundenen Rohrverbund verbleibt. Hierdurch belastet das Anschlussgehäuseteil bei den Wartungsarbeiten den Rohrverbund nicht. Außerdem ist hierdurch eine Mittenaufhängung möglich. Zudem kann hierdurch das Laufgehäuseteil mechanisch entkoppelt sein. Eine bevorzugte Ausführung sieht vor, dass die Rotoren über einen in einem Antriebsgehäuseteil des mehrteiligen Gehäuses angeordneten Antrieb antreibbar sind. Die Anordnung des Antriebes in einem Antriebsgehäuseteil erhöht die Modularität der Pumpengehäuseteile. So können unterschiedliche Laufgehäuseteile und Anschlussgehäuseteile mit verschiedenen Antrieben kombiniert werden, um die Schraubenpumpe an die Erfordernisse des Einsatzzweckes und -ortes optimal anpassen zu können. Der Antrieb kann direkt über eine aus dem Gehäuse geführte Welle angeschlossen sein kann. According to an advantageous embodiment of the invention it is provided that at least one support foot is provided on the connection housing part. 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. A preferred embodiment provides that 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.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, dass der Antrieb eine Magnetkupplung umfasst. Mit der Einbindung einer Magnetkupplung in den Antrieb der Schraubenpumpe ist eine mechanische Trennung zwischen Fördermedium und Antriebsaggregat realisierbar, die die sichere Förderung beispielsweise von brennbaren oder sonstwie reaktiven oder giftigen Fluiden ermöglicht. According to an advantageous embodiment of the invention it is provided that the drive comprises a magnetic coupling. With the inclusion of 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.
Weiter vorteilhaft ist die Ausgestaltung, dass das Gehäuse zwischen dem Laufgehäuseteil und dem Antriebsgehäuseteil eine plan verlaufende Teilungsebene aufweist. Die plane Teilungsebene bietet einfache und langlebige Abdichtungsmöglichkeiten zwischen den Gehäuseteilen des Pumpengehäuses an. Further advantageous is the embodiment that 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.
Weiter vorteilhaft ist die Ausgestaltung, dass zwischen dem Laufgehäuseteil und dem Antriebsgehäuseteil eine Flachdichtung angeordnet ist. Die plane Ausgestaltung der Teilungsebene zwischen Laufgehäuseteil und Antriebsgehäuseteil ermöglicht die Verwendung einer Flachdichtung zwischen den Gehäuseteilen der Pumpe. Hier ist von besonderem Vorteil, dass Flachdichtungen sich relativ einfach montieren lassen, preiswert, langlebig sowie fehlerunanfällig sind. Further advantageous embodiment is that between the barrel housing part and the drive housing part, a flat gasket is arranged. 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. Here is of particular advantage that flat gaskets can be relatively easy to assemble, inexpensive, durable and error-prone.
Eine alternative Ausführungsform der Erfindung sieht vor, dass zwischen dem Laufgehäuseteil und dem Antriebsgehäuseteil eine O-Ring-Dichtung angeordnet ist. An alternative embodiment of the invention provides that between the barrel housing part and the drive housing part, an O-ring seal is arranged.
Eine weitere vorteilhafte Ausführung ist, dass das Laufgehäuseteil beheizbar ist. Mit dem Laufgehäuseteil sind damit auch die direkt im Laufgehäuseteil platzierten Rotoren direkt beheizbar. Durch die direkte Beheizung des Laufgehäuseteils ist eine Förderung von Medien möglich, die nur in erwärmtem Zustand flüssig sind. Hierbei kann es sich insbesondere um Kunststoffe, beispielsweise MDI- Kunststoffe, handeln. Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen. Ausführungsbeispiele der Erfindung sind in den folgenden Zeichnungen rein schematisch dargestellt und werden nachfolgend näher beschrieben. Einander entsprechende Gegenstände oder Elemente sind in allen Figuren mit den gleichen Bezugszeichen versehen. Es zeigen: 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. Further features, details and advantages of the invention will become apparent from the following description and from the drawings. Embodiments of the invention are shown purely schematically in the following drawings and will be described in more detail below. Corresponding objects or elements are provided in all figures with the same reference numerals. Show it:
Figur 1 schematische Darstellung einer erfindungsgemäßen Schraubenpumpe; Figur 2 weitere schematische Darstellung einer erfindungsgemäßen Schraubenpumpe; Figur 3 schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe; Figur 4 weitere schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe; 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;
Figur 5 weitere schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe; Figure 5 is another schematic sectional view of a screw pump according to the invention;
Figur 6 weitere schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe; Figure 6 is another schematic sectional view of a screw pump according to the invention;
Figur 7 schematische Explosionsdarstellung einer erfindungsgemäßen Schraubenpumpe; Figure 7 is a schematic exploded view of a screw pump according to the invention;
In Figur 1 mit dem Bezugszeichen 1 bezeichnet ist eine Schraubenpumpe 1 schematisch dargestellt. Die Darstellung gemäß Figur 1 zeigt eine Schraubenpumpe 1 , die ein mehrteiliges Gehäuse 2 umfasst. Das Gehäuse 2 umfasst ein Laufgehäuseteil 7 und ein Anschlussgehäuseteil 15 sowie ein Antriebsgehäuseteil 21 . Neben diesen Gehäuseteilen 7, 15, 21 können weitere Gehäuseteilkomponenten zum Anbau an diese Gehäuseteile 7, 15, 21 vorgesehen sein. So kann ein Entleerungsgehäuse zur Montage an den Gehäuseteilen 7, 15, 21 vorgesehen sein, wobei das Entleerungsgehäuse vorzugsweise Komponenten umfasst, die eine Entleerung der Schraubenpumpe 1 zur Wartung ermöglichen. Zudem kann ein Anbaugehäuse mit Spülanschlüssen zum Prüfen und Reinigen der Schraubenpumpe 1 vorgesehen sein. Auch ein Druckbegrenzungsventilgehäuse sowie ein Bypassgehäuse sind zur Montage an den modulartig aufgebauten Gehäuseteilen 7, 15, 21 der Schraubenpumpe 1 möglich. An dem Gehäuse 2 der Schraubenpumpe 1 kann zudem ein montierbares Druckausgleichsgehäuse mit Leitungen zum Druckausgleich der Schraubenspindelpumpenrotoren vorgesehen sein. Weiterhin kann der Anbau eines separaten Rezirkulationsgehäuse, beispielsweise zur Bereitstellung einer kontrollierten Rezirkulation von Fluid bei Kapazitätsanpassungen, vorgesehen sein. Außerdem ist denkbar, ein Sicherheitsventil-Adapter-Gehäuse als Anbauteil an die Gehäuseteile 7, 15, 21 der Schraubenpumpe 1 vorzusehen, über welches Sicherheitsventile oder Berstscheiben anschließbar sind. Auch eine anbaubare Getriebehaube ist vorsehbar. Weitere modulartige Zusatzgehäuse mit zusätzlichen Funktionen sind möglich. Um die modulartigen Zusatzgehäuse (nicht gezeigt) an dem Gehäuse 2 der Schraubenpumpe 1 anzubauen sind an dem Laufgehäuseteil 7 mehrere Abdeckplatten 25 vorgesehen, die zur Montage eines Zusatzgehäuses entfernt werden können. Die Abdeckplatten 25 dienen auch der einfacheren Wartung, da sie Öffnungen in das Innere des Pumpengehäuses 2, beispielsweise zu dem Saugraum 1 1 , abdecken. Wie gut in Figur 1 zu erkennen ist, sind das saugseitige Anschlusselement 13 und das druckseitige Anschlusselement 14 an einem gemeinsamen Anschlussgehäuseteil 15 des mehrteiligen Gehäuses 2 angeordnet. Das Anschlussgehäuseteil 15 ist einteilig ausgebildet. Dies erleichtert die Montage mit den weiteren Gehäuseteilen 7, 21 der Pumpe 1 , da weniger Teile zueinander ausgerichtet werden müssen. Die separate Ausgestaltung des Anschlussgehäuseteils 15 ermöglicht es durch Austausch dieses Bauteils die Position der Anschlusselemente 13, 14 auf dem Anschlussgehäuseteil 15 zu verändern, ohne dass hierfür Änderungen an dem Laufgehäuseteil 7 erforderlich sind. Hierdurch kann beispielsweise die Förderrichtung der Pumpe 1 verändert werden, ohne dass das Laufgehäuseteil 7 angepasst werden muss. Das Anschlussgehäuseteil 15 hat insgesamt vier Stützfüße 20 um sich selbständig vom Untergrund abstützen zu können. An den Stützfüßen 20 ist eine Fußheizung vorgesehen. Über diese oder weitere anbaubare Heizelemente ist das Laufgehäuseteil 7 beheizbar, z.B. um die gewünschte Viskosität des geförderten Fluids zu gewährleisten. Die Figur 2 zeigt eine Schraubenpumpe 1 schematisch dargestellt. Gegenüber Figur 1 ist die Perspektive geändert, so dass ein besserer Blick auf das saugseitige Anschlusselement 14 möglich ist. In 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. In addition to these housing parts 7, 15, 21 further housing part components for attachment to these housing parts 7, 15, 21 may be provided. Thus, 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. In addition, 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. On the housing 2 of the screw pump 1 can also be provided a mountable pressure compensation housing with lines for pressure equalization of the screw spindle pump rotors. Furthermore, the cultivation of a separate recirculation housing, for example, to provide a controlled recirculation of fluid in capacity adjustments, may be provided. It is also conceivable to provide 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. As can be seen well in FIG. 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. As a result, for example, the conveying direction of the pump 1 can be changed without the running housing part 7 having to be adapted. The terminal housing part 15 has a total of four Support feet 20 to support themselves from the ground can. On the support legs 20, a foot heating is provided. About this or other attachable heating elements, the barrel housing part 7 is heated, for example, to ensure the desired viscosity of the pumped fluid. 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.
Die Figur 3 zeigt eine schematische Schnittdarstellung durch das Gehäuse 2 einer erfindungsgemäßen Schraubenpumpe 1 entlang eines Rotors 3, 3a der Schraubenpumpe 1 . Die Schraubenpumpe 1 umfasst zwei gekoppelte, kammerbildende Rotoren 3, 3a mit jeweils wenigstens einer zumindest bereichsweise ausgebildeten, gewindeförmigen Profilierung 4, 4a mit schraubenförmigen Kanälen 5, 5a und mit die Kanäle 5, 5a begrenzenden Trennwänden 6, 6a. Die Rotoren 3, 3a üben im Pumpbetrieb eine gegensinnige Rotordrehung um die Rotorachsen 10, 10a aus, so dass die Trennwände 6, 6a der beiden Rotoren 3, 3a zahnradartig ineinandergreifen. Das Laufgehäuseteil 7 bildet mit einer Spindelbohrung 9 die Außenwandung für die Rotoren 3, 3a. Die Rotoren 3, 3a bilden mit dem Laufgehäuseteil 7 mehrere Förderkammern 8, 8a für das zu fördernde Fluid aus. Im Pumpbetrieb wandern die Förderkammern 8, 8a aufgrund der Rotation der Rotoren 3, 3a axial entlang der Rotorenachsen 10, 10a. Hierdurch wird das Fluid von einem Saugraum 1 1 in einen Druckraum 12 gefördert. Auch wenn im Ausführungsbeispiel lediglich zwei kammerbildende Rotoren 3, 3a (Fig. 4) gezeigt sind, ist die Erfindung nicht darauf beschränkt. So können weitere Rotoren in der Schraubenpumpe 1 vorgesehen sein. Die Rotoren 3, 3a sind über Lager 26 in dem Laufgehäuseteil 7 gelagert. Hierzu sind im Laufgehäuseteil 7 Aufnahmen oder Zentrierungen der Lagerung untergebracht. Durch die einteilige Ausbildung des Laufgehäuseteils 7 kann die Ausrichtung und Lagerung der Rotoren 3, 3a in dem Laufgehäuseteil 7 sehr einfach erfolgen. Die einteilige Ausführung des Laufgehäuseteils 7 bietet insbesondere zusammen mit der Lagerung der Rotoren 3, 3a in dem Laufgehäuseteil 7 die Möglichkeit, bei der Positionierung der Rotoren 3, 3a keine zusätzlichen Toleranzen durch weitere Bauteile berücksichtigen zu müssen. Wie zu erkennen ist, bildet das Anschlussgehäuseteil 15 mit dem Laufgehäuseteil 7 zusammen den Saugraum 1 1 und den Druckraum 12. Das Anschlussgehäuseteil 15 weist zwischen dem Saugraum 1 1 und dem Druckraum 12 eine Trennwand 17 auf. In der Trennwand 17 ist ein Druckausgleichselement 18 angeordnet, das als Überlastungsventil ein im Druckraum 12 erzeugten Überdruck in Richtung Saugraum 1 1 ableiten kann und so Schäden an der Pumpe und dem mit der Schraubenpumpe 1 verbundenen Rohrsystems verhindert. Zwischen dem Laufgehäuseteil 7 und dem Anschlussgehäuseteil 15 weist das Gehäuse 2 eine plane, parallel zu den Rotorenachsen 10, 10a verlaufende Teilungsebene 16 auf. Diese Teilungsebene 16 bildet einen Anschlussflansch zwischen dem Anschlussgehäuseteil 15 und dem Laufgehäuseteil 7. Die Rotoren 3, 3a sind für den Pumpbetrieb über einen in einem Antriebsgehäuseteil 21 des mehrteiligen Gehäuses 2 angeordneten Antrieb 22 angetrieben. Dieser Antrieb 22 umfasst eine Magnetkupplung, die in einem als Flanschgehäuse ausgebildeten Antriebsgehäuseteil 21 angeordnet ist. Zwischen dem Laufgehäuseteil 7 und dem Antriebsgehäuseteil 21 ist vorteilhafterweise eine weitere plan verlaufende Teilungsebene 23 vorgesehen. Auf dieser Teilungsebene 23 zwischen dem Laufgehäuseteil 7 und dem Antriebsgehäuseteil 21 ist eine weitere Flachdichtung 24 angeordnet. Die weiteren anbaubaren Zusatzgehäuse sind vorzugsweise ebenfalls über plan verlaufende Teilungsebenen mit dem Pumpengehäuse 2 verbunden und weiter vorzugsweise über weitere Flachdichtungen auf diesen Teilungsebenen gegeneinander abgedichtet. Weitere Teilungsebenen auch innerhalb des Laufgehäuseteils 7, des Anschlussgehäuseteil 15 oder des Antriebsgehäuseteils 21 sind möglich. Auch hier bieten sich weitere Flachdichtungen zur Abdichtung der Gehäuseteile gegeneinander an. Die Figur 4 offenbart eine schematische Schnittdarstellung durch das modulartige Gehäuse 2 einer erfindungsgemäßen Schraubenpumpe 1 aus Sicht der Rotorachsen 10, 10a (Fig. 3). Das mehrteilige Gehäuse 2 der Schraubenpumpe 1 umfasst das Laufgehäuseteil 7, welches die beiden Rotoren 3, 3a in einer 8- förmigen Spindelbohrung 9 kontaktfrei umschließt. Das Laufgehäuseteil 7 bildet so die Außenwandung für die Rotoren 3, 3a. Die Rotoren 3, 3a bilden mit dem Laufgehäuseteil 7 mehrere Förderkammern 8, 8a (Fig. 3) für das zu fördernde Fluid aus. Im Pumpbetrieb wandern die Förderkammern 8, 8a (Fig. 3) aufgrund der Rotation der Rotoren 3, 3a axial entlang der Rotorenachsen 10, 10a (Fig. 3). Hierdurch wird das Fluid von dem Saugraum 1 1 in den Druckraum 12 gefördert. Über ein mit dem Saugraum 1 1 fluidtechnisch verbundenes saugseitiges Anschlusselement 13 wird im Pumpbetrieb das zu fördernde Medium aus einem mit dem Anschlusselement 13 verbundenen Rohrsystem in den Saugraum 1 1 geleitet. Ein mit dem Druckraum 12 fluidtechnisch verbundenes druckseitiges Anschlusselement 14 schafft eine Verbindung zu einem Rohrsystem in welches das geförderte Medium gleitet wird. Als Anschlusselement 13, 14 in dem Bereich kommen, wie im Ausführungsbeispiel gezeigt, Anschlussflansche 13, 14 in Frage. Das Gehäuse 2 weist zwischen dem Laufgehäuseteil 7 und dem Anschlussgehäuseteil 15 eine weitgehend plane, weitgehend parallel zu den Rotorenachsen 10, 10a verlaufende Teilungsebene 16 auf. Diese Teilungsebene 16 bildet einen Anschlussflansch zwischen dem Anschlussgehäuseteil 15 und dem Laufgehäuseteil 7. Das Anschlussgehäuseteil 15 verbindet die Prozess- Anschlüsse (Saugleitung, Druckleitung) an den Anschlusselementen 13, 14 mit dem Laufgehäuseteil 7. Die Figur 5 zeigt eine schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe 1 durch das Anschlussgehäuseteil 15 und das Antriebsgehäuseteil 21 mit Antrieb 22. Die Schnittebene verläuft parallel zu den Rotorenachsen 10, 10a (Fig. 3) und der Teilungsebene 16 (Fig. 4 u. 6). Es ist gut zu erkennen, dass das Anschlussgehäuseteil 15 mit dem Laufgehäuseteil 7 zusammen den Saugraum 1 1 und den Druckraum 12 bildet. Das Anschlussgehäuseteil 15 weist eine Trennwand 17 zwischen dem Saugraum 1 1 und dem Druckraum 12 auf. Diese Trennwand 17 kann abhängig von den Erfordernissen am Einsatzort der Pumpe 1 unterschiedlich gestaltet sein, um beispielsweise die Förderrichtung der Pumpe 1 anzupassen. Die Figur 6 zeigt eine schematische Schnittdarstellung einer erfindungsgemäßen Schraubenpumpe 1 durch die Teilungsebene 16 (Fig. 4). Wie zu erkennen ist, verläuft die Teilungsebene 16 durch den Saugraum 1 1 und den Druckraum 12. Es ist weiter gut zu erkennen, dass zwischen dem Laufgehäuseteil 7 und dem Anschlussgehäuseteil 15 (Fig. 4) eine Flachdichtung 19 auf der planen Teilungsebene 16 angeordnet ist. Da der Schnitt auch durch das Antriebsgehäuseteil 21 und den Antrieb 22 verläuft, ist auf der Teilungsebene 23 zwischen dem Antriebsgehäuseteil 21 und dem Laufgehäuseteil 7 die zwischen den Gehäuseteilen befindliche Flachdichtung 24 zu sehen. Die Figur 7 offenbart eine schematische Explosionsdarstellung einer erfindungsgemäßen Schraubenpumpe 1 . Hierbei ist das Anschlussgehäuseteil 15 vom Laufgehäuseteil 7 angehoben, so dass die ebenfalls angehobene Flachdichtung 19 und der Saugraum 1 1 sowie der Druckraum 12 zu sehen sind. Von besonderem Vorteil ist, dass alle Pumpenelemente vor Montage mit dem Anschlussgehäuseteil 15 im Laufgehäuseteil 7 vormontierbar und testbar sind, inklusive der Dichtungen oder des Magnetantriebs. 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. In pumping operation, the delivery chambers 8, 8a migrate axially along the rotor axes 10, 10a due to the rotation of the rotors 3, 3a. As a result, the fluid is conveyed from a suction chamber 1 1 in a pressure chamber 12. Although only two chamber-forming rotors 3, 3a (Fig. 4) are shown in the embodiment, the invention is not limited thereto. Thus, 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. Due to the one-piece design of the barrel housing part 7, 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. As can be seen, 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. In the partition wall 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. Between the running housing part 7 and the connection housing part 15, 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. Between the barrel housing part 7 and the drive housing part 21, a further plane dividing plane 23 is advantageously provided. On this parting plane 23 between the barrel housing part 7 and the drive housing part 21, a further flat gasket 24 is arranged. The additional attachable additional housing are preferably also connected to planer dividing planes with the pump housing 2 and further preferably sealed by another flat gaskets on these graduation levels against each other. Further graduation levels also within the barrel housing part 7, the connection housing part 15 or the drive housing part 21 are possible. Here, too, offer more flat gaskets for sealing the housing parts against each other. 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. In pumping operation, 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). As a result, the fluid is conveyed from the suction chamber 1 1 in the pressure chamber 12. 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. As 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. The connecting housing part 15 connects the process connections (suction line, pressure line) to the connecting elements 13, 14 with 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. 6 shows a schematic sectional view of a screw pump 1 according to the invention through the dividing plane 16 (FIG. 4). As can be seen, the dividing plane 16 runs through the suction chamber 11 and the pressure chamber 12. It can also be clearly seen that 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. Here, 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.
Durch die Anordnung mehrerer Laufgehäuseteile 7 aufeinander, also ein Stapeln der Laufgehäuseteile 7, kann mit Vorteil eine mehrstufige Pumpe realisiert werden. By arranging a plurality of barrel housing parts 7 on each other, so stacking the barrel housing parts 7, a multi-stage pump can be realized with advantage.
Außerdem können mehrere Anschlussgehäuseteile 15 an mehreren Seiten des Laufgehäuseteils 7 vorgesehen sein. In addition, a plurality of terminal housing parts 15 may be provided on several sides of the barrel housing part 7.
Bezuaszeichenliste Schraubenpumpe Bezuaszeichenliste screw pump
Gehäuse casing
3a Rotoren 3a rotors
4a Profilierung 4a profiling
5a schraubenförmige Kanäle 5a helical channels
6a Trennwände 6a partitions
Laufgehäuseteil Running housing part
Förderkammer delivery chamber
Spindelbohrung spindle hole
10a Rotorenachsen 10a rotor axes
Saugraum suction
Druckraum pressure chamber
saugseitiges Anschlusselement druckseitiges Anschlusselement 15 Anschlussgehäuseteilsuction-side connection element pressure-side connection element 15 connection housing part
16 Teilungsebene A 16 graduation level A
17 Trennwand  17 partition
18 Druckausgleichselement 19 Flachdichtung A  18 Pressure compensation element 19 Flat gasket A
20 Stützfuß  20 support foot
21 Antriebsgehäuseteil 21 drive housing part
22 Antrieb 22 drive
23 Teilungsebene B  23 Division level B
24 Flachdichtung B 24 Flat gasket B
25 Abdeckplatte  25 cover plate
26 Lager  26 bearings

Claims

Patentansprüche claims
1 . Schraubenpumpe (1 ), insbesondere ein- oder mehrflutige Doppelschraubenpumpe, umfassend ein mehrteiliges Gehäuse (2, 7, 15, 21 ) und wenigstens zwei gekoppelte, kammerbildende Rotoren (3, 3a) mit jeweils wenigstens einer zumindest bereichsweise ausgebildeten, gewindeförmigen Profilierung (4, 4a) mit schraubenförmigen Kanälen (5, 5a) und mit die Kanäle (5, 5a) begrenzenden Trennwänden (6, 6a), wobei die Rotoren (3, 3a) eine gegensinnige Rotordrehung ausüben und die Trennwände (6, 6a) zahnradartig ineinandergreifen, ein Laufgehäuseteil (7), wobei das Laufgehäuseteil (7) die Rotoren (3, 3a) kontaktfrei umschließt, wobei die Rotoren (3, 3a) mit dem Laufgehäuseteil (7) wenigstens eine Förderkammer (8, 8a) für das zu fördernde Fluid bilden, wobei die Förderkammer (8, 8a) axial entlang der Rotorenachsen (10, 10a) wandert und das Fluid von einem Saugraum (1 1 ) in einen Druckraum (12) fördert, ein mit dem Saugraum (1 1 ) fluidtechnisch verbundenes saugseitiges Anschlusselement (13) und ein mit dem Druckraum (12) fluidtechnisch verbundenes druckseitiges Anschlusselement (14), 1 . Screw pump (1), in particular single- or multi-flow twin screw pump, comprising a multipart housing (2, 7, 15, 21) and at least 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) delimiting partitions (6, 6a), wherein the rotors (3, 3a) exert an opposing rotor rotation and mesh the partition walls (6, 6a) like a gear, a running housing part (7), wherein the running housing part (7) surrounds the rotors (3, 3a) without contact, the rotors (3, 3a) with the running housing part (7) forming at least one delivery chamber (8, 8a) for the fluid to be conveyed , wherein the delivery chamber (8, 8a) moves axially along the rotor axes (10, 10a) and conveys the fluid from a suction chamber (1 1) into a pressure chamber (12), a suction-side connection element fluidly connected to the suction chamber (1 1) (13) and a pressure-side connecting element (14) fluidly connected to the pressure chamber (12),
d a d u r c h g e k e n n z e i c h n e t , dass das saugseitige Anschlusselement (13) und das druckseitige Anschlusselement (14) an einem Anschlussgehäuseteil (15) des mehrteiligen Gehäuses (2, 7, 15, 21 ) angeordnet sind, wobei das Gehäuse (2, 7, 15, 21 ) zwischen dem Laufgehäuseteil (7) und dem Anschlussgehäuseteil (15) eine plane, parallel zu den Rotorenachsen (10, 10a) verlaufende Teilungsebene (16) aufweist. characterized in that the suction-side connection element (13) and the pressure-side connection element (14) on a connection housing part (15) of the multi-part housing (2, 7, 15, 21) are arranged, wherein the housing (2, 7, 15, 21) between the running housing part (7) and the connection housing part (15) has a plane, parallel to the rotor axes (10, 10a) extending dividing plane (16).
2. Schraubenpumpe (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass die Teilungsebene (16) durch den Saugraum (1 1 ) und den Druckraum (12) verläuft. 2. Screw pump (1) according to claim 1, characterized in that the dividing plane (16) through the suction chamber (1 1) and the pressure chamber (12).
3. Schraubenpumpe (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Rotoren (3, 3a) in dem Laufgehäuseteil (7) gelagert sind. 3. screw pump (1) according to claim 1 or 2, characterized in that the rotors (3, 3 a) in the barrel housing part (7) are mounted.
4. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Laufgehäuseteil (7) einteilig ausgebildet ist. 4. screw pump (1) according to one of claims 1 to 3, characterized in that the running housing part (7) is integrally formed.
5. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Anschlussgehäuseteil (15) einteilig ausgebildet ist. 5. screw pump (1) according to one of claims 1 to 4, characterized in that the connection housing part (15) is integrally formed.
6. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Anschlussgehäuseteil (15) mit dem Laufgehäuseteil (7) zusammen den Saugraum (1 1 ) und den Druckraum (12) bildet. 6. screw pump (1) according to one of claims 1 to 5, characterized in that the connection housing part (15) with the barrel housing part (7) together the suction chamber (1 1) and the pressure chamber (12).
7. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Anschlussgehäuseteil (15) eine Trennwand (17) zwischen dem Saugraum (1 1 ) und dem Druckraum (12) aufweist. 7. screw pump (1) according to one of claims 1 to 6, characterized in that the connection housing part (15) has a partition (17) between the suction chamber (1 1) and the pressure chamber (12).
8. Schraubenpumpe (1 ) nach einem der Ansprüche 7, dadurch gekennzeichnet, dass in der Trennwand (17) ein Druckausgleichselement (18) angeordnet ist. 8. screw pump (1) according to one of claims 7, characterized in that in the partition wall (17) has a pressure compensation element (18) is arranged.
9. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen dem Laufgehäuseteil (7) und dem Anschlussgehäuseteil (15) eine Flachdichtung (19) angeordnet ist. 9. screw pump (1) according to one of claims 1 to 8, characterized in that between the barrel housing part (7) and the connection housing part (15) has a flat seal (19) is arranged.
10. Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zwischen dem Laufgehäuseteil (7) und dem Anschlussgehäuseteil (15) eine O-Ring-Dichtung angeordnet ist. 10. screw pump (1) according to one of claims 1 to 8, characterized in that between the barrel housing part (7) and the connection housing part (15) an O-ring seal is arranged.
1 1 . Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass an dem Anschlussgehäuseteil (15) mindestens ein Stützfuß (20) vorgesehen ist. 12 Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 1 1 , dadurch gekennzeichnet, dass die Rotoren (3, 3a) über einen in einem Antriebsgehäuseteil (21 ) des mehrteiligen Gehäuses (2, 7, 15, 21 ) angeordneten Antrieb (22) antreibbar sind. 1 1. Screw pump (1) according to one of claims 1 to 10, characterized in that on the connection housing part (15) at least one support foot (20) is provided. 12 screw pump (1) according to one of claims 1 to 1 1, characterized in that the rotors (3, 3a) via a in a drive housing part (21) of the multi-part housing (2, 7, 15, 21) arranged drive (22) are drivable.
13 Schraubenpumpe (1 ) nach Anspruch 12, dadurch gekennzeichnet, dass der Antrieb (22) eine Magnetkupplung umfasst. 13 screw pump (1) according to claim 12, characterized in that the drive (22) comprises a magnetic coupling.
14 Schraubenpumpe (1 ) nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass das Gehäuse (2, 7, 15, 21 ) zwischen dem Laufgehäuseteil (7) und dem Antriebsgehäuseteil (21 ) eine plan verlaufende Teilungsebene (23) aufweist. 14 screw pump (1) according to claim 12 or 13, characterized in that the housing (2, 7, 15, 21) between the barrel housing part (7) and the drive housing part (21) has a plane extending division plane (23).
15 Schraubenpumpe (1 ) nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass zwischen dem Laufgehäuseteil (7) und dem Antriebsgehäuseteil (21 ) eine Flachdichtung (24) angeordnet ist. 15 screw pump (1) according to one of claims 12 to 14, characterized in that between the barrel housing part (7) and the drive housing part (21) has a flat seal (24) is arranged.
16 Schraubenpumpe (1 ) nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, dass zwischen dem Laufgehäuseteil (7) und dem Antriebsgehäuseteil (21 ) eine O-Ring-Dichtung angeordnet ist. 16 screw pump (1) according to one of claims 12 to 14, characterized in that between the barrel housing part (7) and the drive housing part (21) an O-ring seal is arranged.
17 Schraubenpumpe (1 ) nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass das Laufgehäuseteil (7) beheizbar ist. 17 screw pump (1) according to one of claims 1 to 16, characterized in that the barrel housing part (7) is heatable.
EP17801607.7A 2016-10-27 2017-10-27 Horizontally split screw-spindle pump Active EP3532729B2 (en)

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PCT/EP2017/077555 WO2018078073A1 (en) 2016-10-27 2017-10-27 Horizontally split screw-spindle pump

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WO2018078073A1 (en) 2018-05-03
EP3532729B1 (en) 2020-12-30
CN110036202B (en) 2020-10-30
DE102016120579B3 (en) 2018-04-05
CN110036202A (en) 2019-07-19
EP3532729B2 (en) 2024-09-25
US20190249662A1 (en) 2019-08-15
ES2858000T3 (en) 2021-09-29
RU2019116010A (en) 2020-11-27
US11530699B2 (en) 2022-12-20

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