EP3189237B1 - Pompe excentrique à vis - Google Patents

Pompe excentrique à vis Download PDF

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Publication number
EP3189237B1
EP3189237B1 EP15747426.3A EP15747426A EP3189237B1 EP 3189237 B1 EP3189237 B1 EP 3189237B1 EP 15747426 A EP15747426 A EP 15747426A EP 3189237 B1 EP3189237 B1 EP 3189237B1
Authority
EP
European Patent Office
Prior art keywords
stator
eccentric screw
screw pump
clamping
tensioning
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
EP15747426.3A
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German (de)
English (en)
Other versions
EP3189237A1 (fr
Inventor
Oliver Stumpf
Norman Dicks
Julian Harking
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.)
Seepex GmbH
Original Assignee
Seepex GmbH
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Filing date
Publication date
Application filed by Seepex GmbH filed Critical Seepex GmbH
Priority to PL15747426T priority Critical patent/PL3189237T3/pl
Publication of EP3189237A1 publication Critical patent/EP3189237A1/fr
Application granted granted Critical
Publication of EP3189237B1 publication Critical patent/EP3189237B1/fr
Active legal-status Critical Current
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    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/20—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the form of the inner or outer contour of the working chamber
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/28—Safety arrangements; Monitoring
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
    • F04C18/107—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/18—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber
    • F04C28/20—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the volume of the working chamber by changing the form of the inner or outer contour of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00—Manufacture
    • F04C2230/60—Assembly methods

Definitions

  • the invention relates to an eccentric screw pump with at least one stator made of an elastic material and a rotatable or rotatably mounted in the stator rotor, wherein the stator is at least partially surrounded by a stator jacket, which is also referred to as a stator housing, wherein the stator jacket as a longitudinally divided shell at least two shroud segments and forms a Statorspannvorraum with which the stator is clamped in the radial direction against the rotor.
  • the rotor is regularly connected to the drive or drive shaft via at least one coupling rod, which is also referred to as a cardan shaft.
  • the pump has a suction housing and a connecting piece, wherein the stator is connected at one end to a flange of the suction housing and the other end to a connecting flange of the connecting piece.
  • Elastic material means in particular an elastomer, for example a (synthetic) rubber or a rubber mixture.
  • composites made of an elastomer or another material, eg metal are also included.
  • the (elastomeric) stator is formed as a longitudinally divided stator of at least two partial stator shells.
  • the stator preferably consists of two stator half shells.
  • the stator shell consists of at least two shell segments, for example three shell segments or at least four shell segments, which form a stator tensioning device.
  • the stator or the Statorteilschalen lie with end sealing surfaces against corresponding sealing surfaces on the respective housing part (suction housing or connection piece) or on corresponding adapter pieces.
  • stator adjusting elements for tensioning the stator adjusting elements are provided, for example adjusting screws, which eg work in the radial direction on the shell segments or their end-side clamping flanges, so that the shell segments with these screws in the radial direction against the stator can be tensioned.
  • An eccentric screw pump of the type described above is for example from the WO 2009/024279 A1 known.
  • the shell segments of the stator shell have end attachment flanges, which are connected for the purpose of clamping the stator with clamping means to the connecting flange of the suction housing or connecting piece or to separate adapters.
  • These clamping means or adjusting means are designed as adjusting screws, which are oriented substantially in the radial direction.
  • the known eccentric screw pump has proven excellent in practice. Particularly advantageous is the fact that the stator can be retightened, so that, for example, after some wear, an adaptation and thus an optimization of the operation is possible. On this basis, the known measures are further viable. - This is where the invention starts.
  • the invention has for its object to provide an eccentric screw pump of the type described above with improved adjustment and clamping options.
  • the invention teaches in a generic eccentric screw pump of the type described above, that the Statorspannvoriques one or more actuators connected, which are equipped for automated delivery of the stator to the actuators or equipped with the actuators and that the actuators connected to a control device or are equipped with a control device and that the actuators are driven by the control device in response to state information or operating parameters of the eccentric screw pump both for retightening and for relieving the stator.
  • state information or operating parameters can be made available, for example, directly from the pump or the pump controller.
  • the control device may be connected to or integrated in the pump drive or the pump drive control, the actuators being drivable by the control device, for example, depending on the power absorbed by the drive motor or the motor current.
  • a control in dependence on other parameters, for example, the back pressure and / or the flow rate can be done.
  • sensors can be integrated in the eccentric screw pump, which are connected to the control device, so that the actuators can be driven by the control device as a function of measured values which are detected by the sensors, eg temperature values and / or pressure values. But it can also be used on sensors that are not part of the pump itself, but which are integrated into the system as a whole and are arranged, for example, before and / or behind the pump. Thus, for example, with a flow meter behind the pump, the flow rate can be determined or with a pressure sensor behind the pump, the back pressure can be determined.
  • the invention is based on the recognition that the function, the operation and / or the durability of an eccentric screw pump or its components can be optimized if a manual retightening of the stator is replaced or at least supplemented by an automated retightening.
  • the actuating elements with which the stator is adjusted or re-tensioned, are therefore no longer (only) operated manually with suitable tools, but the Statorspannvorraum is equipped with actuators that allow automated delivery.
  • the efficiency of the pump can be constantly determined and monitored by the power absorbed by the drive motor, the backpressure and / or volume flow. In case of deviation from the optimal efficiency then the delivery of the pump can be changed automatically.
  • the hydraulic power of the pump results from the flow rate on the one hand and the backpressure or differential pressure on the other hand. Both parameters can be recorded and from this the hydraulic power can be determined. This hydraulic power can then be compared with the drive power of the pump and derived from the overall efficiency.
  • the controller can switch to a specific maximum permissible starting torque be interpreted.
  • a control of the delivery could be effected as a function of the temperature of the stator, for example, the delivery can be limited at a maximum permitted stator temperature. This can improve the Statorstand
  • the core of the present invention are therefore the actuators, with which the shell segments for clamping and adjusting the stator are automatically actuated in the radial direction.
  • Such actuators may e.g. be designed as electrical or electric motor drives.
  • hydraulic drives e.g. Hydraulic cylinders or pneumatic drives, e.g. Pneumatic cylinders are used.
  • Actuators can be combined with various mechanical stator clamping devices of the eccentric screw pump.
  • the invention can be, for example, in the from the WO 2009/024279 A1 realize known concept in which the adjusting elements work as set screws and at the same time clamping screws in the radial direction of the shell segments.
  • separate drives eg electric motors, which actuate the adjusting screws in the radial direction
  • driven actuators eg stepper motors or hydraulic or pneumatic cylinders.
  • the piston of the cylinder can then form the actuating element, which operates on the shell segment.
  • One Stepper motor can, for example, work on a corresponding actuator, which replaces the set screw.
  • the clamping of the stator does not take place via radially operable adjusting elements, such as screws, but axially or axially parallel displaceable clamping elements, such as an axially displaceable clamping ring or more displaceable in the axis-parallel direction clamping segments.
  • the shell segments each have a clamping flange with first clamping surfaces on the clamping flange and the clamping flanges are one or more displaceable in the axial direction clamping elements, such as a clamping ring or more clamping segments, mounted with second clamping surfaces, wherein the first clamping surfaces and the second clamping surfaces are formed and cooperate in such a way that the stator casing can be tensioned against the stator in the radial direction in the course of an axial displacement of the clamping elements.
  • the first clamping surfaces and / or the second clamping surfaces are formed as wedge surfaces.
  • the clamping elements are then conical, eg innenkonisch formed.
  • the clamping flanges are correspondingly conical, eg outside conical, formed.
  • both the first clamping surfaces and the second clamping surfaces are formed as wedge surfaces, which then optionally abut against each other on a common contact surface.
  • the re-tensioning is done by axial displacement of the clamping ring or the clamping segments and on the clamping surfaces or wedge surfaces is a deflection of the axial force in a radial clamping force. This embodiment with clamping ring or clamping segments opens up a further optimization of the automated delivery.
  • adjusting screws are also provided as adjusting elements in this embodiment, which then however work in the axis-parallel direction on the axially displaceable clamping ring or the axially displaceable clamping segments.
  • the drives already mentioned above in connection with adjusting screws can again be used and the adjusting screws can then also be replaced by corresponding actuators of the drives, so that the actuators are equipped with adjusting elements.
  • clamping levers may be connected to each tension ring, the tension levers (in pairs) e.g. are connected to each other via a common operating lever. A drive can then work on this actuating lever.
  • the actuation levers connected to the collets may be actuated via separate actuators, e.g. are supported on a base plate of the pump or a housing part.
  • the clamping ring itself is rotatably supported as a rotatable clamping ring and is axially displaced in the course of rotation.
  • the clamping ring is guided via a threaded connection on the corresponding housing part on the connection adapter, for example, by the housing part or the connection adapter with an external thread and the clamping ring is provided with a corresponding internal thread.
  • the clamping ring may then be provided on the outside circumferentially with a toothing, which then works, for example, an electric motor drive with a drive gear.
  • This embodiment can alternatively be configured so that not the clamping ring is provided with the wedge surfaces themselves with internal thread and / or external teeth, but that a separate collar or feed ring is provided with the threads and teeth described and that the clamping ring either rotatably with the Adjusting ring is connected or is also arranged rotatable relative to the adjusting ring, so that in the course of rotation of the adjusting ring of the clamping ring is not rotated, but only in the axial direction is moved.
  • a rotatable adjusting ring in the course of rotation to move the clamping ring by the adjusting ring and the clamping ring are provided with correspondingly matched slopes.
  • the adjusting ring on the surface facing the clamping ring one or more slopes or inclined shelves and / or the clamping ring may have on the collar facing surface (corresponding) slopes or inclined surfaces, so that due to the optionally corresponding slopes the "Overall thickness" of adjusting ring on the one hand and clamping ring on the other hand changes in the course of rotation of the adjusting ring and thus the clamping ring is moved in the axial direction.
  • a drive can operate directly on the adjusting ring, e.g. via appropriate gears.
  • a linear actuator in the tangential direction for example, a set screw, which actuates the adjusting ring in the tangential direction, wherein the adjusting screw or a similar linear actuator is driven by the drive.
  • the adjusting ring can also be provided with recesses, which are designed as guide tracks, wherein in these recesses or guide tracks rolling elements or sliding bodies, e.g. Balls are guided and these bodies, e.g. Balls on the tensioning element, e.g. work and press the clamping ring.
  • the guideways or receptacles are e.g. wedge-shaped, i. they have a width tapering along their length (i.e., in the circumferential direction of the ring). In the course of the rotation of such a collar, the bodies, e.g.
  • the recesses are formed as pocket-like, arcuate grooves having a decreasing groove depth from one end to the other end.
  • the recesses are provided only in the adjusting ring.
  • corresponding recesses are provided, so that the rolling elements, e.g. Balls, then guided in corresponding recesses of both the adjusting ring and the clamping ring.
  • an eccentric screw pump which in its basic structure has a stator 1 made of an elastic material and a rotor 2 mounted in the stator 1, wherein the stator 1 is surrounded at least in regions by a stator shell 3. Furthermore, the pump has a suction housing 4 and a connection piece 5, which is also referred to as a discharge nozzle. Not shown is also provided pump drive, wherein the pump drive operates on the rotor 2 via a coupling rod 6. The coupling rod is connected via a coupling joint 7 to the rotor 2 on the one hand and the drive shaft on the other.
  • the pump is usually mounted on a base plate 8, which is in this respect one delivered with the pump Base plate 8 or a user-supplied base plate 8 can act.
  • the stator 1 is connected in a conventional manner with its one end to a connection flange 9 of the suction housing 4 and with its other end to a connection flange 10 of the connecting piece 5.
  • the connection in the illustrated embodiment is not directly to these flanges 9, 10, but with the interposition of an adapter piece 11, 12.
  • These adapters 11, 12 are also referred to as centering or segment recordings.
  • the stator 1 is formed as a longitudinally divided stator and consists of two stator sub-shells 1a, 1b, which form half-shells in the embodiment, each covering an angle of 180 °.
  • Longitudinal means along the stator longitudinal axis L or parallel to this. The separating cut between the partial shells thus runs along parallel to the longitudinal axis L.
  • This longitudinally divided configuration of the elastomeric stator makes it possible to disassemble and assemble the stator 1 when the suction housing 4, discharge nozzle 5 and rotor 2 are mounted. This is on the WO 2009/024279 A1 directed.
  • stator 1 and its stator shells 1a, 1b end sealing surfaces 13, 14 on.
  • the stator sub-shells 1a, 1b are with their end-side sealing surfaces 13, 14 plugged onto Statorfactn, said Statorfactn are provided with in the embodiment shown here on the adapter pieces 11, 12.
  • the adapter pieces 11, 12 are used in known receptacles on the one hand suction housing 4 and on the other hand pressure port 5, so that the suction housing 4 on the one hand and the discharge nozzle 5 on the other hand can be formed in a conventional construction.
  • the end-side sealing surfaces 13, 14 of the stator are conical or designed as a conical surface, in the embodiment "innenkonisch".
  • the Stator also have corresponding conical sealing mating surfaces 17, 18, which may be formed externally conical in the embodiment.
  • the seal is made by rubber squeezing.
  • the fixing and sealing of the stator partial shells 1a, 1b takes place with the aid of the stator jacket 3.
  • This is designed as a longitudinally divided jacket and has several, in the exemplary embodiment, four shroud segments 19.
  • This stator shell 3 forms with its shell segments 19 a Statorspannvortechnisch or Statoreinstellvortechnisch, with which on the one hand fix the longitudinally divided stator 1 and seal and on the other hand can introduce a desired voltage or bias in the stator 1.
  • the shell segments 19 end clamping flanges 20 with first clamping surfaces 21, which are formed in the embodiment as wedge surfaces 21.
  • clamping elements 22 are placed, which are formed in the embodiment as clamping rings and are provided with second clamping surfaces 24, which are also formed as wedge surfaces.
  • the first clamping surfaces 21 and the second clamping surfaces 24 are now formed and they cooperate in such a way that the stator jacket 3, 19 in the course of an axial displacement of the clamping elements or clamping rings 22 in the radial direction against the stator 1 is tensioned.
  • the clamping ring 22 shown in the embodiment can also be replaced by individual clamping segments, so that the individual clamping segments then form as it were an interrupted clamping ring. Such an embodiment is not shown in the figures, however, the explanations in the figure description apply accordingly.
  • the clamping element is provided as a completely circumferential clamping ring 22, which (inside) a circumferential second clamping surface 24, wherein this second clamping surface 24 cooperates with the first clamping surfaces 21 of the casing segments 19.
  • a force acting in the radial direction R clamping force is generated.
  • a adjusting elements are provided, which may be formed as set screws or steel pins 25, for example.
  • one or more actuators 40 are now provided which are connected to or equipped with these actuators for automated delivery of the stator 1.
  • Fig. 1 is this schematic in Fig. 2 shown.
  • actuators 40 stepper motors, which operate on adjusting elements 25 in the axis-parallel direction on the clamping ring 22.
  • adjusting screws are thus replaced in this embodiment by the linearly displaceable adjusting elements 25.
  • each clamping ring 22 at least two, preferably at least three adjusting elements 25 and insofar also three actuators 40, so that a total of six actuators are provided for the pump.
  • the possibilities can be further optimized if four actuators 25 and consequently a total of eight actuators 25 are provided on each pump side. In practice, there will be a compromise between increasing the actuators to improve employment and the associated tax burden.
  • the drive motors 40 are attached to the respective housing part, for example to the connection adapter pieces 11, 12. It is in Fig. 2 an embodiment shown in which the drive motors 40 move axially on indicated rails. By the leadership of these rails are the Moments recorded. Alternatively, it is also possible to arrange the motor itself stationary, eg when using racks.
  • Fig. 3 an alternative embodiment is shown, in which the drives 40 are not designed as stepper motors, but as a cylinder, for example, hydraulic cylinders or pneumatic cylinders.
  • the adjusting elements 25 ' are formed by the pistons of these cylinders.
  • the pistons of the cylinder 40 consequently press in the axis-parallel direction on the respective clamping ring 22.
  • FIG. 4 shows the two clamping rings 22 on the two pump sides are each separately and independently operable, shows the Fig. 4 an embodiment in which the two clamping rings 22 are braced against each other via one or more drives 40. So shows Fig. 4 an embodiment in which the two clamping rings 22 are displaceable via a lever adjustment.
  • at least one connecting rod or connecting rod 29 ' is connected to each clamping ring 22, wherein the two connecting rods 29', which are designed as train-pressure rods, are connected to each other with a common clamping lever 29.
  • Fig. 4 only one such lever arrangement is shown.
  • a corresponding lever arrangement is provided on the opposite side (not shown).
  • the respective clamping or operating lever 29 can tilt and thus let the two clamping rings 22 clamp against each other.
  • the drive is in Fig. 4 merely hinted. Since a clamping lever 29 is preferably provided on each side of the pump, it is possible to provide a separate drive for each clamping lever 29. Preferably, however, one will couple the two tensioning levers 29 together and apply a common drive.
  • each clamping lever 29 itself with a drive 40 can be actuated.
  • the two indicated drives 40 may be arranged as cylinder drives (eg hydraulic cylinders) or threaded spindles, which may be articulated below the base plate 8, for example.
  • each clamping ring can be moved separately and clamped therewith.
  • there is also in the arrangement according to Fig. 5 the ability to connect the two clamping levers 29 with the interposition of a common drive together and in this way to clamp the two clamping rings 22 against each other.
  • a corresponding arrangement with clamping levers 29 may be provided. These can then be operated separately with appropriate drives or alternatively, common drives can be used.
  • the two clamping rings 22 via linear motors 40 are adjustable, which are each connected via corresponding actuators 25 to the clamping rings 22.
  • the linear motors 40 shown there can also be replaced by other actuators, such as cylinder drives.
  • the recognizable arrangement in the figure with actuators 25 and motors 40 is also located on the invisible, opposite side.
  • Fig. 7 shows a modified embodiment in which a rotatable adjusting ring 32 is provided as an adjusting element, which is rotatably mounted and is axially displaced in the course of rotation.
  • the adjusting ring via a threaded connection 30 on the corresponding housing part or connection adapter 11, 12 is arranged.
  • the threaded connection 30 moves this due to the threaded connection 30 in the axial direction on the housing part or the adapter piece 11, 12, so that then then the clamping ring 22 is moved with the wedge surfaces and the shell segments are braced.
  • a separate rotatable collar 32 In the course of the rotation of the adjusting ring 32 of the clamping ring 22 and the cone ring 22 is displaced with the wedge surfaces 24, not shown in the axial direction.
  • the adjusting ring 32 on its the clamping ring 22 facing surface on one or more gradients 33 in the form of inclined surfaces.
  • the clamping ring 22 has on its the adjusting ring 32 facing surface corresponding slopes 34 in the form of oblique surfaces.
  • the rotatable adjusting ring 32 has a plurality of recesses 35, which are formed as guideways and in each of which a rolling or sliding body, such as a ball 36 is guided. These balls 36 abut against the clamping ring 22.
  • the guideways are formed as pocket-like guide grooves 35 whose depth decreases from one end of the groove to the other end of the groove in the direction of the arrow P, so that the rolling elements, eg balls, rest in the course of rotation on the rising groove base.
  • other rolling elements such as cylinders or basically also sliding bodies are used.
  • FIG. 10 A modified embodiment is in Fig. 10 shown.
  • This pump corresponds to that of the WO 2009/024279 A1 known pump with radially oriented screws or actuators 25.
  • actuators 40 can work on these actuators 25. This is in Fig. 10 merely hinted.
  • drives 40 which are merely indicated in the figures, however, an automated delivery of the Clamping elements, eg clamping rings allow.
  • These drives are preferably equipped with control devices and connected to control devices that drive the drives in response to state information or operating parameters of the eccentric screw pump. It can also be provided sensors that provide such state information. Details are not shown in the figures.
  • Fig. 11 An example which does not fall under the protection of the claims is in Fig. 11 shown.
  • braced sheath segments are completely dispensed with.
  • the Statorspannvorraum is therefore not realized on the shell segments, but via intermediate elements between the stator shell 3 and stator 1.
  • these intermediate elements are volume-changing cushion, such as hydraulic pads 41, which are arranged between the stator shell 3 and stator 1.
  • This example is also useful with longitudinally split stator. It is also possible to work with longitudinally divided stator jacket 3 or jacket segments 19. However, this example can also be realized with an undivided stator jacket.
  • the hydraulic pads 41 can also be automatically controlled in the sense of a remote control, so that even in such an example, an adaptation of the geometry to certain operating parameters is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Claims (10)

  1. Pompe à vis excentrée pourvue d'au moins un stator (1) en une matière élastique et d'un rotor (2) rotatif dans le stator (1),
    le stator (1) étant entouré au moins par endroits d'une enveloppe de stator (3),
    sous la forme d'une enveloppe divisée en longueur, l'enveloppe de stator (3) étant constituée d'au moins deux segments d'enveloppe (19) et formant un dispositif de serrage du stator à l'aide duquel le stator est susceptible d'être serré dans la direction radiale contre le rotor (2),
    le dispositif de serrage du stator comportant un ou plusieurs éléments de réglage mobiles, qui agissent pour régler et serrer le stator sur les segments d'enveloppe (19), caractérisée
    en ce que le dispositif de serrage du stator comporte un ou plusieurs actionneurs (40) qui sont raccordés pour une mise en prise automatique du stator (1) sur les éléments de réglage ou qui sont équipés des éléments de réglage et,
    en ce que les actionneurs (40) sont raccordés sur un dispositif de commande ou sont équipés d'un dispositif de commande et en ce que les actionneurs (40) sont susceptibles d'être entraînés par le dispositif de commande en fonction d'informations d'état ou de paramètres de service de la pompe à vis excentrée, aussi bien pour resserrer, qu'également pour décharger le stator.
  2. Pompe à vis excentrée selon la revendication 1, caractérisée en ce que le dispositif de commande est relié avec un entraînement de pompe ou avec une commande d'entraînement de pompe ou est intégré dans celle-ci et en ce que les actionneurs (40) sont susceptibles d'être entraînés par le dispositif de commande en fonction de la puissance d'entraînement absorbée ou du courant du moteur ou d'autres paramètres d'entraînement de la pompe.
  3. Pompe à vis excentrée selon la revendication 1 ou 2, caractérisée en ce que les éléments de réglage sont susceptibles d'être entraînés par le dispositif de commande en fonction d'une ou de plusieurs valeurs de mesure, lesquelles sont détectées par un ou par plusieurs capteurs qui sont reliés avec le dispositif de commande.
  4. Pompe à vis excentrée selon la revendication 3, caractérisée en ce que les capteurs sont conçus en tant que sondes thermiques, sondes de pression ou capteurs de débit.
  5. Pompe à vis excentrée selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les actionneurs (40) sont conçus sous la forme d'entraînements électriques ou électromotorisés, en tant qu'entraînements hydrauliques et /ou en tant qu'entraînements pneumatiques.
  6. Pompe à vis excentrée selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les éléments de réglage (25, 25') sont conçus en tant que vis de réglage, tiges de réglage ou barres de réglage, lesquelles sont susceptibles d'être actionnés à l'aide des actionneurs.
  7. Pompe à vis excentrée selon la revendication 6, caractérisée en ce que les vis de réglage ou tiges de réglage, respectivement les actionneurs (40) agissent en direction radiale sur les segments d'enveloppe.
  8. Pompe à vis excentrée selon la revendication 6, caractérisée en ce que les vis de réglage ou tiges de réglage, respectivement les actionneurs (40) agissent direction radiale sur une bague de serrage (22) déplaçable en direction axiale ou sur des segments de serrage déplaçables en direction axiale, qui agissent par des surfaces de serrage cunéiformes en direction radiale contre les segments d'enveloppe (19).
  9. Pompe à vis excentrée selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'en tant qu'éléments de réglage sont prévus des leviers de serrage (29) qui agissent de préférence sur des barres de serrage (22) ou segments de serrage déplaçables en direction axiale.
  10. Pompe à vis excentrée selon l'une quelconque des revendications 1 à 9, caractérisée en ce qu'en tant qu'élément de réglage est prévue au moins une bague de réglage (32) rotative, laquelle provoque au cours d'une rotation un déplacement axial d'une bague de serrage ou de plusieurs segments de serrage.
EP15747426.3A 2014-09-01 2015-07-30 Pompe excentrique à vis Active EP3189237B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15747426T PL3189237T3 (pl) 2014-09-01 2015-07-30 Mimośrodowa pompa śrubowa

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014112552.5A DE102014112552B4 (de) 2014-09-01 2014-09-01 Exzenterschneckenpumpe
PCT/EP2015/067568 WO2016034341A1 (fr) 2014-09-01 2015-07-30 Pompe à vis sans fin excentrique

Publications (2)

Publication Number Publication Date
EP3189237A1 EP3189237A1 (fr) 2017-07-12
EP3189237B1 true EP3189237B1 (fr) 2019-09-18

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Application Number Title Priority Date Filing Date
EP15747426.3A Active EP3189237B1 (fr) 2014-09-01 2015-07-30 Pompe excentrique à vis

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US (1) US10161397B2 (fr)
EP (1) EP3189237B1 (fr)
JP (1) JP6660942B2 (fr)
KR (1) KR102190348B1 (fr)
CN (1) CN106605067B (fr)
AU (1) AU2015311228B2 (fr)
CA (1) CA2959443C (fr)
DE (1) DE102014112552B4 (fr)
DK (1) DK3189237T3 (fr)
PL (1) PL3189237T3 (fr)
WO (1) WO2016034341A1 (fr)

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DE102015101352A1 (de) * 2015-01-29 2016-08-04 Netzsch Pumpen & Systeme Gmbh Stator-Rotor-System und Verfahren zum Einstellen eines Stators in einem Stator-Rotor-System
DE102017104768A1 (de) 2017-03-07 2018-09-13 Seepex Gmbh Exzenterschneckenpumpe
PL3473856T3 (pl) * 2017-10-20 2021-07-26 Circor Pumps North America, Llc. Urządzenia do demontażu dla śrubowych pomp wyporowych
DE202018101651U1 (de) 2018-03-16 2018-04-09 Seepex Gmbh Anlage zur Förderung von pastösem Material
DE102018111120A1 (de) * 2018-05-09 2019-11-14 J. Wagner Gmbh Verfahren zum Betrieb einer Fördervorrichtung und Fördervorrichtung
DE102018113347A1 (de) 2018-06-05 2019-12-05 Seepex Gmbh Verfahren zur Bestimmung oder Überwachung des Zustandes einer Exzenterschneckenpumpe
DE102019123180A1 (de) * 2019-08-29 2021-03-04 Seepex Gmbh Anlage und Verfahren zur Verbrennung von Schlamm
JP6824537B1 (ja) 2019-09-24 2021-02-03 兵神装備株式会社 一軸偏心ねじポンプ
DE102019130981A1 (de) 2019-11-15 2021-05-20 Seepex Gmbh Exzenterschneckenpumpe
DE102019135635A1 (de) 2019-12-20 2021-06-24 Seepex Gmbh Vorrichtung zur drahtlosen Übermittlung eines Signals
DE102020111386A1 (de) 2020-04-27 2021-10-28 Vogelsang Gmbh & Co. Kg Zustandserfassung an Exzenterschneckenpumpen
CN111927771A (zh) * 2020-08-01 2020-11-13 上海格兰克林（集团）有限公司 一种纳米涂层单螺杆空压机气缸
DE102021112422A1 (de) 2021-05-12 2022-11-17 Seepex Gmbh Pumpe zum Fördern eines Mediums und Verfahren zur Überwachung
DE102021112419A1 (de) 2021-05-12 2022-11-17 Ruhr-Universität Bochum, Körperschaft des öffentlichen Rechts Pumpe zum Fördern eines Mediums und Verfahren zur Überwachung
DE102021131427A1 (de) 2021-11-30 2023-06-01 Vogelsang Gmbh & Co. Kg Exzenterschneckenpumpe mit Arbeitszustellung und Ruhezustellung sowie Verfahren zum Steuern der Exzenterschneckenpumpe
DE102021132561A1 (de) 2021-12-09 2023-06-15 Seepex Gmbh Gelenkverbindung, rotierende Einheit und Exzenterschneckenpumpe
DE102021132549A1 (de) 2021-12-09 2023-06-15 Seepex Gmbh Gelenkverbindung, rotierende Einheit und Exzenterschneckenpumpe
DE102022118485B3 (de) * 2022-07-25 2023-12-21 Netzsch Pumpen & Systeme Gmbh System zum Verspannen eines Tauchrohrs einer Tankpumpe in einem Endstutzen
DE102022119147A1 (de) 2022-07-29 2024-02-01 Ruhr-Universität Bochum, Körperschaft des öffentlichen Rechts Verfahren zur Bestimmung oder Überwachung des Förderstroms einer Exzenterschneckenpumpe
DE202022107205U1 (de) 2022-12-23 2024-04-22 Vogelsang Gmbh & Co. Kg Exzenterschneckenpumpe mit gekapselter Statorauskleidung

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GB2338268A (en) * 1998-02-24 1999-12-15 Orbit Pumps Ltd Stator assembly
DE102005013466B3 (de) * 2005-03-21 2006-10-05 Netzsch-Mohnopumpen Gmbh Spannvorrichtung

Also Published As

Publication number Publication date
PL3189237T3 (pl) 2020-04-30
CN106605067B (zh) 2018-11-13
KR102190348B1 (ko) 2020-12-11
US10161397B2 (en) 2018-12-25
KR20170052605A (ko) 2017-05-12
AU2015311228A1 (en) 2017-03-16
AU2015311228A8 (en) 2020-01-30
CA2959443A1 (fr) 2016-03-10
DE102014112552A1 (de) 2016-03-03
JP6660942B2 (ja) 2020-03-11
US20170268505A1 (en) 2017-09-21
EP3189237A1 (fr) 2017-07-12
DK3189237T3 (da) 2020-01-02
CN106605067A (zh) 2017-04-26
DE102014112552B4 (de) 2016-06-30
CA2959443C (fr) 2022-07-12
JP2017525895A (ja) 2017-09-07
AU2015311228B2 (en) 2019-06-27
WO2016034341A1 (fr) 2016-03-10

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