EP3189235B1 - Pompe à cavité progressive - Google Patents

Pompe à cavité progressive Download PDF

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Publication number
EP3189235B1
EP3189235B1 EP15744914.1A EP15744914A EP3189235B1 EP 3189235 B1 EP3189235 B1 EP 3189235B1 EP 15744914 A EP15744914 A EP 15744914A EP 3189235 B1 EP3189235 B1 EP 3189235B1
Authority
EP
European Patent Office
Prior art keywords
clamping
stator
ring
segments
elements
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
EP15744914.1A
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German (de)
English (en)
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EP3189235A1 (fr
Inventor
Dirk Overmeier
Marcel Griesdorn
Stefan Göthel
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
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Seepex GmbH
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Publication of EP3189235A1 publication Critical patent/EP3189235A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—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
    • 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
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • 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
    • F01C21/007—General arrangements of parts; Frames and supporting elements
    • 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
    • F04C15/0007—Radial sealings for working fluid
    • F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear 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
    • 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
    • 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/10—Stators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—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
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

Definitions

  • the invention relates to an eccentric screw 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 the 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 at its other end to a connecting flange of the connecting piece.
  • Elastic material means within the scope of the invention esp.
  • composites made of an elastomer or another material, for. As metal includes.
  • the (elastomeric) stator is formed as a longitudinally divided stator of at least two stator sub-shells.
  • the stator preferably consists of two stator half shells.
  • the stator shell consists of at least two shell segments, z. B. three sheath segments or four sheath segments, a Statorspannvorraum form. Because of the stator or the stator shells are with end-side sealing surfaces against corresponding sealing surfaces on the respective housing part (suction housing or connection piece) or on corresponding adapter pieces.
  • An eccentric screw pump of the type described above is z. B. 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 on the connecting flanges of the suction housing or connecting piece or to separate adapters.
  • These clamping means are designed as Spannschraubvorraumen, which are formed essentially by working in the radial direction of clamping screws.
  • the known eccentric screw pump has proven excellent in practice. Particularly advantageous is the fact that the stator can be retightened so that z. B. after some wear an adjustment and thus an optimization of the operation is possible. On this basis, the known measures, however, are more viable. - This is where the invention starts.
  • the invention has for its object to provide an eccentric screw pump of the type described above, in which the stator can be tightened easily in a simple manner, and preferably at higher loads.
  • the invention teaches in a generic eccentric screw pump of the type described above, that the shroud segments end each have at least one clamping flange with first clamping surfaces and that on the clamping flange or clamping flanges one or more displaceable in the axial direction clamping elements is placed with second clamping surfaces is / are, wherein the first clamping surfaces and the second clamping surfaces are formed and cooperate such that the stator casing in the course of axial displacement of the clamping elements in the radial direction against the stator can be tensioned.
  • the first clamping surfaces and / or the second clamping surfaces are formed as wedge surfaces.
  • the clamping elements are then conical, z. B. innenkonisch formed.
  • the clamping flanges are correspondingly conical, z. B. outside conical.
  • 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 contact of the two clamping surfaces, eg wedge surfaces can also be limited to a linear contact.
  • the invention is initially based on the knowledge that the possibility of adjusting and tensioning, esp. Re-tensioning of the stator is of particular importance.
  • This possibility consists according to the invention in a basically known manner with the help of the shroud segments, which are also referred to as Einstellsegmente and are designed to adjust the stator clamping and retightening of the stator and thus form a Statorspannvorraum.
  • the clamping of the shell segments is no longer directly via radially oriented screws, but "indirectly” via one or more clamping elements, which are moved to clamp the stator in the axial direction and apply a radial force on the stator in the course of this axial displacement.
  • the mutually cooperating clamping surfaces are provided, which are particularly preferably designed as wedge surfaces. Due to the design of these clamping surfaces or wedge surfaces is a "deflection" of the axial force in a radial clamping force.
  • the displacement of the clamping elements or the clamping element can with conventional actuators, eg. B. set screws be realized, but then not working in the radial direction, but in axis-parallel or in the direction parallel to the axis. With such adjusting elements, the clamping element can be displaced in the axial direction and thus produce the radial clamping force.
  • the advantage here is the fact that the control elements, z. B. screws, primarily in the course of tensioning and consequently adjusting forces must absorb. During operation, however, must then by the adjusting elements, for. B. screws, only reduced forces are absorbed, because for the most part, the forces are absorbed directly or indirectly by the displaceable in the axial direction clamping elements.
  • a (continuous) clamping ring with a circumferential second clamping surface said second clamping surface of the clamping ring cooperating with the first clamping surfaces of the shell segments.
  • This clamping ring forms with its (inner) wedge surface a cone ring or he comprises a cone ring.
  • suitable control elements eg. B. adjusting screws, move to tension in the axial direction, so that in the course of the axial displacement with the aid of the corresponding clamping surfaces, z. B. wedge surfaces, radial forces are generated.
  • suitable control elements eg. B. adjusting screws
  • the housing parts of the pump or its adapter pieces have receiving pockets which hold the clamping segments and hold and fix in the radial direction and in the circumferential direction, so that the clamping segments in these pockets in the axial direction or axis-parallel direction are.
  • adjusting elements z As set screws are used, but do not work as in the prior art in the radial direction directly on the shell segments, but indirectly work on the clamping elements on the shell segments and are preferably oriented in the axis-parallel direction. It is within the scope of the invention that for the two Stator ends, a plurality of screws are provided in each case.
  • the setscrews can be designed as pressure screws or lag screws.
  • the opposing clamping elements for. B. clamping rings to clamp against each other with common tie rods.
  • the invention also includes other embodiments in which is not working with screws or adjusting rods or tie rods, but with clamping or adjusting levers, which are connected to the clamping elements, for.
  • the clamping ring may be formed in several parts and at least consist of an outer ring and an inner ring, wherein the adjusting elements, for. B. screws, work on the outer ring and wherein the clamping surfaces, for. B. wedge surfaces are arranged on the inner ring, which is then formed as a cone ring.
  • the invention is based on the recognition that it is expedient if the clamping ring is made of several parts of different materials, wherein z. B. the outer ring may be made of steel or cast steel and the inner ring of a corrosion-resistant material with good sliding properties, eg. B. brass. By this two-part design, an optimal adaptation of the materials can be realized.
  • the clamping device has at least one separate clamping set, which has a second clamping surfaces and the shell segments enclosing double wedge ring and two mutually braced and the first clamping surfaces comprising clamping rings.
  • the clamping flanges with the clamping surfaces are not fixedly connected to the respective shell segments, but it is a separate component with the first clamping surfaces, namely the double wedge ring provided, said double wedge ring also by a plurality of individual Double wedge segments can be replaced, in which case particularly preferably each shell segment is assigned a double wedge segment.
  • the bracing is then done with two mutually braced clamping rings, these two clamping rings are braced against each other with the interposition of the double wedge segments or a double wedge ring.
  • the wedge principle according to the invention is realized, because the double wedge segments are braced in the course of the axial displacement of the two clamping rings in the radial direction against each other and thus pressed against the shell segments. Even so, the described advantages of the invention can be achieved.
  • adjusting screws are used as adjusting elements, it may be expedient if these adjusting screws are oriented in (exactly) axis-parallel direction. Alternatively, however, it is likewise within the scope of the invention to arrange the adjusting screws at an angle, particularly preferably parallel or substantially parallel to the first wedge surfaces and second wedge surfaces. Thus, the screws work parallel to the direction of movement of the components in the course of clamping.
  • the clamping ring is rotatably supported and is automatically displaced axially in the course of rotation.
  • This can be z. B. realize that the clamping ring via a threaded connection on the corresponding housing part or the Connection adapter is performed by z. B. the housing part or the connection adapter is provided with an external thread and the clamping ring with a corresponding internal thread. In the course of the rotation of the clamping ring on the housing part of this is then simultaneously displaced axially in the sense of a delivery.
  • a further embodiment of the invention provides that a rotatable adjusting ring or a rotatable adjusting ring arrangement is provided as an adjusting element, which causes an axial displacement of the clamping ring or the clamping segments in the course of rotation. In this embodiment, therefore, not adjusting screws o. The like. Directly to the displacement on the clamping ring, but there is a separate rotatable adjusting ring is provided which generates an axial displacement of the clamping ring in the course of rotation. However, it is not - as in the above-described embodiment - the clamping ring is rotated itself, but the collar.
  • the adjusting ring can - as explained above in connection with the clamping ring - be arranged via a threaded connection on the housing part, so that the adjusting ring moves axially in the course of rotation and thus also axially displaces the clamping ring.
  • the adjusting ring is indeed rotatably mounted on the housing part, but does not move itself in the axial direction, but only shifts the clamping ring in the axial direction.
  • This can be z. B. realize that the adjusting ring on the clamping ring facing surface has one or more slopes or inclined shelves and / or that the clamping ring on the adjusting ring facing surface (corresponding) slopes or inclined shelves, so that due to the possibly corresponding slopes the "total 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.
  • An embodiment with a rotatable adjusting ring can also be designed so that the adjusting ring and / or the clamping ring is provided with recesses / which are designed as guide tracks for rolling or sliding body, wherein in these recesses eg rolling elements (balls, cylinders or the like ) and wherein these rolling or sliding body on the clamping element, for. B. the clamping ring, work or press.
  • These guideways or recesses extend arcuately along the circumferential direction over a certain circumferential or angular range of the adjusting ring and / or clamping ring.
  • recesses can be provided either only in the adjusting ring or only in the clamping ring or preferably corresponding recesses both in the adjusting ring and in the clamping ring. In the latter case, the rolling or sliding bodies are then guided in the corresponding recesses of both the adjusting ring and the clamping ring.
  • the recesses may have a tapering width over their length (ie in the circumferential direction of the ring), so that, for example, when balls are used in the course of rotation of the adjusting ring, the balls will move in these wedge-shaped recesses and be forced out of the recesses. Thus, the balls move in the course of rotation in the axial direction and thus actuate the clamping ring in the axial direction.
  • the recesses are particularly preferred as pocket-like, arcuate Formed grooves having a decreasing groove depth from one end to the other end. It is expedient if, therefore, not (only) the width of the groove tapers, but the groove increases, so that the rolling or sliding body is not guided on the edges, but rests on the rising groove bottom.
  • stator tensioning device additionally has one or more actuators which work for automated delivery to the control elements.
  • the clamping elements with corresponding clamping surfaces, z. B. wedge surfaces.
  • the clamping flanges of the shell segments form-fitting elements, for. B. projections or recesses are arranged, which for an anti-rotation and / or axial securing with corresponding positive locking elements, z. B. recesses or projections, cooperate on a housing part of the pump or on separate adapter pieces.
  • These can z. B. on this jacket segment projections, z. B. T-shaped projections may be connected, which in corresponding recesses the respective housing part or the adapter piece, z. B.
  • 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 drive, wherein the drive operates on the rotor 2 via a coupling rod 6. The coupling rod is connected via coupling joints 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 may be a base plate 8 supplied with the pump to this extent, or else a base plate 8 provided by the user.
  • the stator 1 is connected in a conventional manner with its one end to a connection flange 9 of the suction housing 4 with its other end to a connection flange 10 of the connecting piece 5.
  • the connection does not take place directly on these connection flanges 9, 10, but under Interposition of an adapter piece 11, 12.
  • These adapters 11, 12 are also referred to as centering or segment recording.
  • 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 means along the stator longitudinal axis L or parallel to this. The separating cut between the partial shells thus runs along or 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 partial shells 1a, 1b are with their end-side sealing surfaces 13, 14 attachable to Statorfactn, said Statorfactn are provided in the embodiment shown here on the adapter pieces 11, 12.
  • the adapter pieces 11, 12 themselves are used in known receptacles on the one hand Saugeophuse 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 1 are conical or designed as a conical surface, in the exemplary embodiment "inside-conical".
  • the Stator also have corresponding conical sealing mating surfaces 17, 18, which may be formed outside 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, four in the exemplary embodiment Sheath segments 19 on.
  • 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.
  • first clamping surfaces 21 which are formed in the embodiment as wedge surfaces 21.
  • clamping elements 22, 23 are placed, which are provided with second clamping surfaces 24, which are also formed as wedge surfaces 24.
  • the first clamping surfaces 21 and the second clamping surfaces 24 are now formed and they cooperate such that the stator shell 3, 19 in the course of axial displacement of the clamping elements 22, 23 in the radial direction against the stator 1 is tensioned.
  • a first embodiment is shown in which a completely circumferential clamping ring 22 is provided as clamping element, which (inside) has a circumferential second clamping surface 24, said second clamping surface 24 cooperates with the first clamping surfaces 21 of the shell segments 19.
  • a force acting in the radial direction R clamping force is generated.
  • actuating elements 25 are provided, which in the embodiment according to Fig. 1 are designed as screws 25. These adjusting elements or adjusting screws 25 are held in the illustrated embodiment of the adapter pieces 11, 12.
  • the clamping ring 22 in the there illustrated embodiment is made in several parts and consists of an outer ring 22a and an inner ring 22b, wherein the screws 25 press on the outer ring 22a and wherein the wedge surfaces 24 are arranged on the inner ring 22b, which forms a cone ring.
  • FIG. 4 represents a modified fourth embodiment in which a plurality of individual clamping segments 23 are provided as adjusting elements, each having second clamping surfaces 24, wherein these second clamping surfaces 24 cooperate with the first clamping surfaces 21 of the shell segments 19.
  • a comparative analysis of the Fig. 4a to 4d shows that each shell segment 19 is associated with a clamping segment 23 at each end.
  • the clamping segments 23 are received in suitable recesses or receptacles 26 in the adapter pieces 11, 12.
  • adjusting screws 25 are provided as adjusting elements, which are held on the adapter pieces 11, 12 and work on the clamping segments 23.
  • This embodiment also works according to the wedge principle according to the invention.
  • Fig. 5 shows a further embodiment in which the clamping device has a separate clamping set 27 at both stator ends.
  • This separate clamping set 27 has a plurality of double wedge segments 28 and two mutually braced clamping rings 22 'on.
  • the double wedge segments 28 have outside first wedge surfaces 21 and the two clamping rings 22 'have inside second wedge surfaces 24.
  • the two clamping rings 22 ' are braced against each other with the interposition of the double wedge segments 28, so that in the course of bracing and consequently displacement of the two clamping rings 22', the wedge segments 28 are displaced in the radial direction and thus work on the stator shell 3 in the radial direction ,
  • each shroud segment 19 is associated with a respective double wedge segment 28 at each end.
  • Fig. 6 a modified embodiment is shown, which in its basic structure of the embodiments according to Fig. 1 and 2 equivalent. While at the Fig. 1 and 2 the screws 25 are oriented in the axis-parallel direction, shows Fig. 6 an embodiment in which the screws 25 are oriented obliquely, in the embodiment substantially parallel to the wedge surfaces 21, 24 and thus also parallel to the direction of movement of the shroud segments 19 in the course of bracing.
  • Fig. 1 to 6 Embodiment show, in which as adjusting elements set screws 25 or adjusting rods 25 'or clamping rods are used, which show Fig. 7 to 10 modified embodiments in which working with other adjusting mechanisms.
  • FIG. 7 shows Fig. 7 an embodiment in which the two clamping rings 22 are moved by a lever adjustment, to each clamping ring at least one connecting rod or connecting rod 29 'are connected, wherein the two connecting rods 29' are connected to each other via a common clamping lever 29.
  • Fig. 8 shows a modified embodiment in which a rotatable adjusting ring 32 is provided as an actuating element, which operates on the clamping ring 22, wherein the clamping ring 22 itself does not rotate, but is axially displaced in the course of rotation.
  • the adjusting ring 32 is arranged via a threaded connection 30 on the corresponding housing part or the connection adapter 11, 12. In the course of the rotation of the adjusting ring 32, this moves due to the threaded connection 30 in the axial direction on the housing part or the adapter piece 11, 12, so that then also the clamping ring 22 is displaced with the wedge surfaces and the shell segments are braced.
  • this rotatable adjusting ring 32 of this outer peripheral side may be provided with a toothing 31, so that z.
  • a drive gear outside circumferentially can work on the collar.
  • Fig. 9 an embodiment is shown in which as a control element also a separate rotatable adjusting ring 32 and an adjusting ring arrangement is provided.
  • 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. These gradients 33 and 34 cooperate such that in the course of rotation of the adjusting ring 32 of the clamping ring 22 is displaced in the axial direction.
  • the embodiment according to Fig. 8 moves in this embodiment, only the clamping ring 22 in the axial direction, while the Adjusting ring 32 only rotates.
  • the rotation of the adjusting ring 32 can be effected via a set screw, not shown, or an automated drive.
  • a rotatable adjusting ring 32 is also provided as an actuating element, said adjusting ring 32 having a plurality of recesses 35, which are formed as guide tracks and in each of which rolling elements, for example a ball 36 is guided.
  • These balls 36 are against the clamping elements 22, 23, z. B. the clamping ring 22 or the clamping segments 23, to.
  • the balls can either rest directly against the clamping ring 22 or the clamping segments 23.
  • the clamping ring 22 is also equipped with corresponding recesses. This is not shown in the figures.
  • the balls 36 are guided both in the guide tracks 35 of the adjusting ring and in the corresponding guide tracks of the clamping ring, which are not shown.
  • the guideways 35 can basically run wedge-shaped over their length and have a tapered width. More preferably, however, they do not only taper across the width, but they 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 balls in the course of rotation rest on the rising groove base.
  • the balls 36 are shown as a guide body. Alternatively, however, other rolling elements, for example cylinders or, in principle, also sliding bodies can be used. Details are not shown.
  • 19 form-locking elements 37 are connected to the clamping flanges 20 of the shell segments, which cooperate for an anti-rotation and axial locking with corresponding positive locking elements 38 on the housing parts or the adapter pieces 11, 12.
  • the illustrated embodiments are to the Shroud segments projections 37 connected, which are T-shaped and engage in correspondingly configured grooves 38 of the adapter pieces 11, 12.
  • the projections 37 are not integrally formed with the shell segments 19 in the embodiments, but manufactured as separate parts and fastened with screws 39 to the shell segments 19.
  • adjusting screws shown in the embodiments can also be replaced by other comparable linear work of the adjusting elements, z. As adjusting pins, and esp. Also by linear drives such.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Transmission Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Claims (12)

  1. Pompe à vis sans fin excentrique avec au moins un stator (1) en matériau élastique et un rotor (2) pouvant tourner dans le stator (1),
    le stator (1) étant entouré au moins par zone d'une enveloppe de stator (3),
    l'enveloppe de stator (3) étant composée d'au moins deux segments d'enveloppe (19) en tant qu'enveloppe divisée longitudinalement et formant un dispositif de tension de stator avec lequel le stator peut être serré dans la direction radiale contre le rotor (2),
    les segments d'enveloppe (19) comportant en extrémité respectivement au moins une bride de serrage (20) avec une première face de serrage (21), caractérisée en ce que
    sur la bride de serrage ou les brides de serrage (20) des segments d'enveloppe (19), un ou plusieurs éléments de serrage (22, 23) est/sont posé(s) déplaçable(s) dans le sens axial (a) avec les deuxièmes faces de serrage (24),
    les premières faces de serrage (21) et les deuxièmes faces de serrage (24) étant constituées de telle sorte que l'enveloppe de stator (3) peut être serrée contre le stator (1) au cours d'un déplacement axial (a) des éléments de serrage (22, 23) dans le sens radial (R).
  2. Pompe à vis sans fin excentrique selon la revendication 1, caractérisée en ce que le stator (1) est composé d'au moins deux parties de coquilles de stator (la, 1b) en tant que stator divisé longitudinalement.
  3. Pompe à vis sans fin excentrique selon la revendication 1 ou 2, caractérisée en ce que les premières faces de serrage (21) et/ou les deuxièmes faces de serrage (24) sont constituées comme des faces cunéiformes.
  4. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'une bague de serrage (22) est prévue en tant qu'élément de serrage avec une deuxième face de serrage (24) périphérique, laquelle coopère avec les premières faces de serrage (21) des éléments d'enveloppe (19).
  5. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 1 à 3, caractérisée en ce que des segments de serrages individuels (23) avec respectivement une deuxième face de serrage (24) sont prévus en tant qu'éléments de serrage, lesquels coopèrent avec les premières faces de serrage (21) des segments d'enveloppe (19).
  6. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 1 à 5, caractérisée en ce que les éléments de serrage (22, 23) peuvent être déplacés dans la direction axiale avec des éléments de réglage (25, 25', 29, 32).
  7. Pompe à vis sans fin excentrique selon la revendication 6, caractérisée en ce que les éléments de réglage sont constitués sous la forme de vis de réglage (22), de barres de réglage (23) ou des barres de serrage ou levier de serrage (29), lesquels fonctionnent sur les éléments de serrage, par ex. : la bague de serrage ou les segments de serrage.
  8. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 6 ou 7, caractérisée en ce que la bague de serrage (22) est constituée en plusieurs parties et est composée d'au moins une bague extérieure (22a) et une bague intérieure (22b), les éléments de réglage fonctionnant sur la bague extérieure (22a) et les deuxièmes faces de serrage (22b), par ex. : faces cunéiformes, étant disposées sur la bague intérieure.
  9. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 1 à 8, caractérisée en ce que le dispositif de serrage comporte au moins un ensemble de serrage séparé (27) lequel comporte une bague conique double ou plusieurs segments coniques doubles (28) comportant les deuxièmes faces de serrage (24) et entourant les segments d'enveloppe (19) et deux bagues de serrage (22') serrables l'une contre l'autre et comportant les premières faces de serrage (21) .
  10. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 4 à 9, caractérisée en ce que la bague de serrage (22) est maintenue pouvant tourner et pouvant être déplacée axialement au cours d'une rotation.
  11. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 6 à 10, caractérisée en ce qu'une bague de réglage (32) pouvant tourner ou un ensemble de bague de réglage pouvant tourner est prévu en tant qu'élément de réglage, lequel cause un déplacement axial de l'élément de serrage (22, 23) ou des éléments de serrage (22, 23) au cours de la rotation.
  12. Pompe à vis sans fin excentrique selon l'une quelconque des revendications 1 à 11, caractérisée en ce que des éléments à conformité de forme (32), par ex. : des évidements ou des saillies, sont disposés sur les segments d'enveloppe (19) ou leurs brides de serrage (20), lesquels coopèrent pour une sécurité anti-rotation et/ou une fixation axiale des segments d'enveloppe avec les éléments à conformité de forme correspondants (38), par ex.: des saillies ou des évidements, sur une partie de boîtier de la pompe ou sur des pièces d'adaptateur séparés.
EP15744914.1A 2014-09-01 2015-07-30 Pompe à cavité progressive Active EP3189235B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014112550.9A DE102014112550B4 (de) 2014-09-01 2014-09-01 Exzenterschneckenpumpe
PCT/EP2015/067557 WO2016034340A1 (fr) 2014-09-01 2015-07-30 Pompe à vis excentrique

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EP3189235A1 EP3189235A1 (fr) 2017-07-12
EP3189235B1 true EP3189235B1 (fr) 2019-02-27

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EP15744914.1A Active EP3189235B1 (fr) 2014-09-01 2015-07-30 Pompe à cavité progressive

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US (1) US10648337B2 (fr)
EP (1) EP3189235B1 (fr)
CN (1) CN106605066B (fr)
DE (1) DE102014112550B4 (fr)
WO (1) WO2016034340A1 (fr)

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DE102016121582A1 (de) * 2016-11-10 2018-05-17 Seepex Gmbh Exzenterschneckenpumpe
DE102017100540B4 (de) 2017-01-12 2018-09-06 Seepex Gmbh Exzenterschneckenpumpe
DE102017104768A1 (de) 2017-03-07 2018-09-13 Seepex Gmbh Exzenterschneckenpumpe
DE102017126002B3 (de) 2017-11-07 2019-02-14 Seepex Gmbh Exzenterschneckenpumpe
DE102018102640A1 (de) 2018-02-06 2019-08-08 Seepex Gmbh Exzenterschneckenpumpe
DE202018101651U1 (de) * 2018-03-16 2018-04-09 Seepex Gmbh Anlage zur Förderung von pastösem Material
DE102019005366A1 (de) * 2019-07-31 2021-02-04 Pumpenfabrik Wangen Gmbh 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
DE102019135635A1 (de) 2019-12-20 2021-06-24 Seepex Gmbh Vorrichtung zur drahtlosen Übermittlung eines Signals
WO2024144472A1 (fr) 2022-12-28 2024-07-04 Polat Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Nouvelle configuration d'ensemble stator pour pompes à rotor hélicoïdal excentré

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Also Published As

Publication number Publication date
WO2016034340A1 (fr) 2016-03-10
EP3189235A1 (fr) 2017-07-12
US20170306760A1 (en) 2017-10-26
DE102014112550B4 (de) 2016-06-16
CN106605066A (zh) 2017-04-26
DE102014112550A1 (de) 2016-03-03
US10648337B2 (en) 2020-05-12
CN106605066B (zh) 2019-06-28

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