WO2010105682A1 - Système avec pompe à engrenages pourvue d'un carter de pompe divisé - Google Patents

Système avec pompe à engrenages pourvue d'un carter de pompe divisé Download PDF

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Publication number
WO2010105682A1
WO2010105682A1 PCT/EP2009/053231 EP2009053231W WO2010105682A1 WO 2010105682 A1 WO2010105682 A1 WO 2010105682A1 EP 2009053231 W EP2009053231 W EP 2009053231W WO 2010105682 A1 WO2010105682 A1 WO 2010105682A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
pump
gear pump
arrangement according
parts
Prior art date
Application number
PCT/EP2009/053231
Other languages
German (de)
English (en)
Inventor
Jörg Giesler
Stefan Weber
René Triebe
Markus Steinmann
Original Assignee
Maag Pumps Systems Ag
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
Application filed by Maag Pumps Systems Ag filed Critical Maag Pumps Systems Ag
Priority to PCT/EP2009/053231 priority Critical patent/WO2010105682A1/fr
Publication of WO2010105682A1 publication Critical patent/WO2010105682A1/fr

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Classifications

    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/086—Carter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B29C48/2715—Cleaning; Purging; Avoiding contamination of plasticising units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
    • B29C48/37—Gear pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/387—Plasticisers, homogenisers or feeders comprising two or more stages using a screw extruder and a gear pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • F04C2/18—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 similar tooth forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
    • B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2562—Mounting or handling of the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/27—Cleaning; Purging; Avoiding contamination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • B29C48/693—Substantially flat filters mounted at the end of an extruder screw perpendicular to the feed axis

Definitions

  • the present invention relates to an arrangement according to the preamble of claim 1.
  • Gear pumps have proven to be increasingly technically advantageous and economical in the processing of rubber materials in conjunction with single screw extruder systems. In this case, a relatively high cleaning and maintenance costs, which is to cope with gear pumps, accepted.
  • Gear pumps have due to their working principle only a limited self-cleaning capacity. Falls on the suction side of the inlet pressure, since no further fluid is fed (because, for example, an extruder screw is empty before the gear pump), usually remain in the inlet medium (ie, the suction side), the discharge side (ie the pressure side), in the lubrication medium with lubricated bearings and the tooth chambers.
  • the pumped medium residues can be washed out with the help of a cleaning medium or the gear pump is simply charged with a new pumped medium. If the system still has to be switched off anyway, there is a risk that the system will no longer be approached by scorching the pumped medium without exceeding the maximum permissible torques _ 9 __
  • gear pump must then be completely disassembled and cleaned. While a clean gear pump can be disassembled relatively easily, on the other hand, the decomposition of a filled with pumping medium gear pump is relatively expensive and therefore time consuming. In special cases, the inlet and outlet of a gear pump are coupled with easy-to-use quick release with other process units, so that the gear pump can be disconnected relatively easily. By contrast, the time required for disassembly of the internal parts, the cleaning of the inside of the pump housing, the cleaning of the bearings, the shafts and the mechanical seals and the subsequent assembly of the cleaned parts is considerable.
  • a gear pump which has a pump housing which can be divided into two parts, whereby a simple access to the gears is given. Due to the compulsory division of the pump housing along a cutting plane which is perpendicular to the plane formed by the shaft axes, cleaning of the bearings and seals is cumbersome.
  • a major disadvantage is that the inlet and outlet side flange must be solved before dividing the pump housing.
  • extrusion line in which an extruder unit, a gear pump and an extrusion tool are connected in series, the cleaning effort is considerable, since the system after the
  • the present invention is therefore initially based on the object of specifying an arrangement which allows a cleaning and thus a frequent change of medium in a simple and fast way.
  • the invention relates to an arrangement comprising:
  • a gear pump having a pump housing consisting of two housing parts and comprising inner parts, in particular a bearing / seal unit and two toothed gears provided on shafts, wherein at least one of the shafts is guided outwardly from the pump housing and is operatively connected to a pump drive, an extruder unit with an extruder drive,
  • an extrusion die wherein with respect to a conveying direction defined by the flow direction of the conveying medium, the extruder unit in front of the gear pump and the gear pump in front of the
  • Extrusion tool are arranged.
  • the invention is characterized in that the extruder unit and the extrusion tool are displaceable relative to one another and that the housing parts forming the pump housing can be joined together along a surface, wherein at least in the
  • Area of the inner parts of the surface is designed such that a tangential plane in each point of the surface to a plane spanned by the wave axes reference plane has an angle ( ⁇ ) of a maximum of 45 °.
  • a variant of the inventive arrangement is that the surface which divides the pump housing into two housing parts, is a plane.
  • Arrangement consist in that the extruder unit, the gear pump and the extrusion tool are arranged substantially on a straight line.
  • Arrangement consist in that the extruder unit are mounted rotatably or pivotally together with a housing part connected to this, so that the inner parts of the gear pump can be removed.
  • the extruder unit with flange-mounted housing part is rotatable or pivotable about a point and that a rotational or pivoting movement takes place in a horizontal plane.
  • Still further embodiments of the inventive arrangement are that only the extruder unit and the housing part flanged to this are displaceable. Further embodiments of the inventive arrangement are that a locking element is provided by means of which the internal parts remain in one of the two housing parts after the pump housing is divided.
  • a filter element is provided which is suction side with open pump housing, wherein a support member between the filter element and the sliding bearing unit is arranged and holds the filter element in a predefined position.
  • a screw present in the extruder unit can be pulled through a suction-side opening when the pump housing is open.
  • the pump housing consists solely of the housing parts.
  • Fig. 1 shows a known arrangement with a
  • FIG. 2 shows an inventive arrangement in plan view
  • 3 shows the inventive arrangement according to FIG. 2 with a divided pump housing
  • FIG. 4 shows the arrangement according to the invention according to FIG. 2 with a divided pump housing and a swung-away extrusion unit
  • FIG. 6 shows the inventive arrangement according to FIG. 5 with a split pump housing
  • FIG. 7 is a perspective view of a
  • FIG. 8 is a perspective view of a section through an inventive gear pump connected to two flanges, wherein longitudinal axes of supply and discharge channel lie in the cutting plane, which is also perpendicular to a plane formed by shaft axes of the gear pump,
  • FIG. 9 is a simplified representation of the gear pump according to FIG. 8 in a cross section also according to FIG. 8,
  • FIG. Fig. 10 is a simplified illustration of another
  • FIG. 11 is a simplified representation of yet another embodiment of a gear pump, again in a section according to FIG. 9,
  • FIG. 12 is a simplified representation of yet another embodiment of a gear pump, again in a section according to FIG. 9,
  • Fig. 13 is a simplified illustration of yet another
  • FIG. 14 is a simplified representation of yet another embodiment of a gear pump, again in a section according to FIG. 9,
  • 15 is a perspective view of a section in the region of a connection point for the two housing parts, in which they are fixed with a clamping wedge, and
  • Fig. 16 is a perspective view of a section in the region of the connection point for the two housing parts, in which they are fixed with screw.
  • a known arrangement is shown, which consists of a series connection of an extruder unit 50, a gear pump 40 and an extrusion die 30.
  • the extruder unit 50 in turn consists of a drive 53 and downstream gear 52, which with a
  • Extruder screw 51 is coupled.
  • the extruder unit 50 feeds the following gear pump 40 with conveying medium via a first coupling point 55.
  • the gear pump 40 conveys the conveying medium in a known manner from the so-called suction side to the pressure side and delivers a constant throughput through the subsequent extrusion die 30.
  • the components are to be cleaned, in particular in those areas which are marked in line with line 1 in FIG.
  • These are conveyor channel sections located at the end or beginning of processing areas.
  • the cleaning is performed by the coupling points 55 and 56 are released so that, for example, the gear pump 40 can be completely removed.
  • the gear pump 40 can be completely disassembled, whereby also the internal parts, such as a bearing / seal unit, the gears arranged on shafts, can be cleaned.
  • the gear pump 40 has a pump housing which is divisible into two housing parts 2 and 3.
  • the pump housing is divided in a plane 10 which coincides with a plane defined by the axes of the shafts.
  • FIG. 3 again shows the arrangement according to FIG. 2, but now the pump housing of the gear pump 40 is opened or divided, and the extruder unit 50, together with the housing part 3 flanged to the extruder unit 50, has moved back against the conveying direction or extrusion direction R. as required for cleaning, for example.
  • the internal parts of the gear pump 40 are held by a holding plate 57 and a bolt 58. Without the retaining plate 57 and the bolt 58, the internal parts would possibly fall out of the open pump housing and be damaged.
  • housing part 2 of the gear pump 40 is free of internal parts, there is the possibility of cleaning the housing part. 2 and the conveyor channel leading to the extrusion tool.
  • the internal parts are to be removed from the housing part 3.
  • the bolt 58 can be removed after the internal parts have been secured elsewhere, for example, with a specially made for this purpose holding device (not shown in Fig. 3).
  • Fig. 5 shows the inventive arrangement in a side view.
  • a fixed upright element 60 is now shown in FIG. 5, with which the extrusion tool 30 and at least the left-hand housing part 2 of the gear pump 40 are connected.
  • the extruder unit 50 and connected to this right housing part 3 of the gear pump 40 is connected to a movable stand member 61, wherein the movable stand member 61 is slidably mounted on the fixed stand member. This ensures that the extruder unit 50 can be moved together with the right housing part 3 of the gear pump 40 to the right.
  • a pump drive 41 is provided, by means of which the outwardly guided shaft of the gear pump 40 is driven.
  • Pump drive shaft and guided outward shaft of the gear pump 40 are connected to each other via a releasable coupling.
  • the releasable coupling 42 must be removed if the gear pump 40 is to be divided by driving away the extruder unit 50. This is indicated in Fig. 6. - 1 "5 -
  • Fig. 7 shows the left housing part 3 of the gear pump in a perspective view, wherein the internal parts are removed from the housing part 3.
  • the delivery port for fluid conveyed from the suction side, i. from the outlet of the screw extruder, flows into the pump interior.
  • the gears (not shown in Fig. 7) are in
  • a filter element 70 is provided, which is arranged in the feed opening 74, whereby the pumped medium must first pass the filter element 70 before it reaches the gears.
  • the filter element 70 and associated support member 71 are isolated, i. not inserted into the housing part 3, shown. So that
  • Filter element 70 can be inserted into the feed opening 74 and is also held in this, the feed opening 74 on the side of the pump interior has a larger diameter than on the side of the extruder unit. The different diameters have As a result, a shoulder 75 is formed in the feed opening 74, up to which the filter element 70 can be pushed into the feed opening 74.
  • the support member 71 is pushed, whereby the filter element 70 is held and fixed between the stopper 75 and the support member 71.
  • the forces acting on the filter element 70 by the pumped medium are taken over by the support element 71 and transmitted to the shafts and plain bearings. For this purpose, the support element 71 with lateral
  • Support surfaces 76 are formed, which are simulated area-wise the course of the sliding bearing surfaces.
  • the possibility of removing the filter element 70 via the pump interior has the great advantage that the pump housing on the suction side does not have to be released from other process components, such as, for example, from the extruder unit. After dividing the pump housing and the removal of the internal parts, the support member 71 and then the filter element 70 can be very easily removed and cleaned. In addition, there is the possibility that with appropriate design of the feed opening 74 can also be accessed on other components. It is conceivable, for example, that the extruder screw is pulled through the feed opening 74 and can thus be cleaned or replaced without the extruder unit having to be dismantled.
  • FIGS. 8 to 16 Various variants for divisible pump housing will be explained with reference to FIGS. 8 to 16, as they can be used in connection with the inventive arrangement.
  • Fig. 8 shows a connected with flanges 4 and 5 gear pump in a section, wherein the cutting plane is perpendicular to shaft axes of the gear pump and longitudinal axes of supply and discharge channels 16 and 17 lie in the cutting plane.
  • the gear pump consists of a pump housing 1, a bearing / sealing unit 15, two clamping wedges 6 and 7, a suction side 8, is supplied to the conveying medium via the supply channel 17, and a pressure side 9, from which the conveying medium is discharged via the discharge channel 16.
  • the pump housing 1 is connected, for example via screw with the respective flange 4 and 5, wherein in Fig. 8 only holes 18 to 21 are shown for receiving corresponding screws.
  • the screw connections are not necessarily to be solved when the pump housing 1 is to be opened.
  • the pump housing 1 consists of two housing parts, which are designated by 2 and 3.
  • the two housing parts 2 and 3 are using the clamping wedges 6 and
  • the two housing parts 2 and 3 can be separated from each other after the lifting of the clamping wedges 6 and 7, so that the inner region of the pump housing 1, in particular the both gears and the bearing / seal unit 15 of the gear pump, is freely accessible.
  • the bearing / seal units 15 can be removed together with the two gear shafts as a coherent package the pump housing 1.
  • the two housing parts 2 and 3 are in the assembled state along a surface 10, which coincides with the plane defined by the axes of the waves of the gear pump plane.
  • the bearing / seal unit 15 can be removed with the pump housing 1 open together with the gears and easily cleaned or maintained.
  • the bearing / seal unit 15 can be made of one piece.
  • the bearing / sealing unit 15 is composed of different modules, which are used individually or as a whole in the pump housing 1.
  • Bearing / sealing unit 15 is provided.
  • the bearing function and optionally also the sealing function are realized directly in the housing parts 2 and 3 of the pump housing 1. This achieves an improved seal. In such a variant thus leads to the
  • FIG. 9A shows a section through the divisible pump housing 1, wherein the sectional plane is perpendicular to the gear shafts 11 and 12.
  • the pump housing 1 dividing surface 10 as well as all elements shown are shown schematically.
  • the embodiment variant shown in FIG. 9 is an embodiment variant which is identical to that according to FIG. 8.
  • the position of the surface 10 is identical with respect to the plane defined by the two shaft axes 11 and 12 reference plane.
  • the surface 10 together with the reference plane.
  • Housing parts 2 and 3 are pressed against each other, the housing parts 2 and 3 in Fig. 9B are spaced from each other. This gives the possibility of the bearing / seal unit 15 and the shafts 11 and 12 with the gears (not shown in Fig. 9B) the
  • Remove pump housing 1 As can also be seen from FIG. 9B, the housing parts 2 and 3 have a recess into which the bearing / sealing unit 15 can be inserted. This ensures that the bearing / seal unit 15 and the shafts 11 and 12 are axially fixed together with the gears.
  • Fig. 10 shows a further embodiment of the present invention, wherein the same view and the same schematic representation has been selected as 9, in contrast to the embodiment according to FIG. 9, the reference plane 22 no longer coincides with the surface 10 dividing the pump housing 1 in the embodiment according to FIG. 10, but between the surface 10 and the reference plane 22 becomes
  • angle ⁇ which is a maximum of 45 °, preferably 20 ° and a minimum of 5 °.
  • a larger angle ⁇ causes a stronger rear engagement of the inner parts through the recess, whereby the forces exerted on the inner parts forces to release the inner parts of the housing parts 2 and 3 are increased.
  • the Bearing / sealing unit 15 for example, due to the pumped medium, rather stuck in the recess of the housing parts 2 and 3, so the angle ⁇ is greater than selected in a variant for a gear pump, in which due to the medium a slight removal of the internal parts, in particular the bearing / seal unit 15, is expected from the recess.
  • Fig. IIA shows another embodiment of the present invention.
  • the surface 10 encloses an angle ⁇ with the reference plane 22, which may be in the angular range specified above.
  • the surface 10 in the embodiment according to FIG. IIA is outside the recess for the
  • Bearing / sealing unit 15 a kink up or down, in such a way that the surface 10 at its lower or upper end parallel to the reference plane 22 extends.
  • the bearing / seal unit 15 thus all internal parts, from the position fixed by the housing parts 2 and 3 position. Due to a curvature in the recess in the lower region of the housing part 3, the bearing / seal unit 15 is held, whereby the bearing / seal unit 15, and with it all the others Internal parts also, undergoes a rotational movement when the housing parts 2 and 3 are further apart. If the distance between the housing parts 2 and 3 greater than the outer dimensions of the bearing / seal unit 15, the inner parts will fall down. This is advantageously achieved by a
  • Secured device prevents. For example, with a rope which is fastened above the pump housing 1, the internal parts are secured.
  • the two housing parts 2 and 3 separating surface 10 may have any course. Restriction is only that the specified angle ⁇ , the absolute amount is preferably between 45 ° and 5 °, in any sub-area of the surface 10 is exceeded or fallen short of. This will be apparent from other embodiments shown in FIGS. 12A, 12B, 13A, 13B and 14.
  • a further embodiment of the present invention is that no pump cover, as used in known gear pumps for covering shaft-side ends and for axially fixing the shaft, are provided.
  • the positioning function of the pump cover is integrated in this embodiment of the invention quasi in the two housing parts 2 and 3, because by dividing the pump housing 1 in the housing parts 2 and 3 according to the above-described course possibilities of the surface 10, the housing parts 2 and 3 take this Function of the pump cover.
  • the sealing function which is realized in known pump housing by means of the pump cover, is realized in the inventive device by the interaction of the housing parts 2 and 3 with the bearing / seal unit 15. When cleaning the gear pump eliminating the loosening of the cover screws and disassembly of the lid. It is expressly pointed out that this further embodiment variant without pump cover can be combined with one or all of the variants described above.
  • FIG. 14 is particularly worth mentioning since it gives the impression that the surface 10 dividing the pump housing runs parallel to the reference plane spanned by the shaft axes.
  • the surface 10 in the upper and lower portions of the pump housing is parallel to the reference plane, but the surface 10 does not coincide with the reference plane, so that the imaginary surface 10 (shown in phantom in Fig. 14) peaks in the region of the internal parts of the gear pump Angle ⁇ to the reference plane extends.
  • the inner parts are in particular the gears, the shaft sections, which are located in the pump housing, and possibly also the bearing / seal unit 15.
  • the surface 10 is thus defined in the region of the inner parts as a connecting surface between the cut lines formed in the recess, which by the parallel to Reference plane extending surface 10 in the upper and lower portions of the pump housing arise.
  • FIG. 15 shows a further embodiment variant for fixing the two housing parts 2 and 3.
  • the pins according to FIG a dovetail-shaped cross section.
  • a clamping wedge 30 is pushed, which has a dovetail-shaped recess for receiving the dovetail-shaped pin. This ensures that the clamping wedges 30 do not have to be pressed continuously against the housing parts 2 and 3.
  • FIG. 16 A still further embodiment variant for fixing the two housing parts 2 and 3 is shown in FIG. 16. Instead of a clamping wedge screw connections are used to fix the two housing parts 2 and 3 and to press against each other.

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

Abstract

L'invention concerne un système avec une pompe à engrenages (40) pourvue d'un carter de pompe qui est constitué de deux parties de carter (2, 3) et qui comprend des parties intérieures comme notamment palier/ unité d'étanchéité et deux roues dentées prévues sur des arbres, s'engrenant l'une dans l'autre, au moins un des arbres étant guidé du carter de pompe vers l'extérieur et étant activement relié à un entraînement de pompe (41). Il est en outre prévu une unité extrudeuse (50) comportant un entraînement d'extrudeuse (53) et un outil d'extrusion (30), l'unité extrudeuse (50) étant disposée avant la pompe à engrenages (40) et la pompe à engrenages (40) étant disposée avant l'outil d'extrusion (30) par rapport à une direction de refoulement (R) définie par la direction d'écoulement du fluide refoulé. L'invention est caractérisée en ce que l'unité extrudeuse (50) et l'outil d'extrusion (30) peuvent être déplacés l'un par rapport à l'autre et en ce que les parties de carter (2, 3) formant le carter de pompe peuvent être assemblées le long d'une surface (10), la surface (10) étant conçue au moins dans la région des parties intérieures de telle manière qu'un plan tangentiel présente en chaque point de la surface (10) un angle (α) d'au maximum 45° par rapport à un plan de référence (22) passant par les axes des arbres.
PCT/EP2009/053231 2009-03-19 2009-03-19 Système avec pompe à engrenages pourvue d'un carter de pompe divisé WO2010105682A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/053231 WO2010105682A1 (fr) 2009-03-19 2009-03-19 Système avec pompe à engrenages pourvue d'un carter de pompe divisé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/053231 WO2010105682A1 (fr) 2009-03-19 2009-03-19 Système avec pompe à engrenages pourvue d'un carter de pompe divisé

Publications (1)

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WO2010105682A1 true WO2010105682A1 (fr) 2010-09-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3038862A1 (fr) * 2015-07-17 2017-01-20 Michelin & Cie Dispositif et procede de nettoyage d'une extrudeuse pour melanges d'elastomeres

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120206A (en) * 1991-04-08 1992-06-09 Bridgestone/Firestone, Inc. Gear metering pump for compounded elastomeric material
EP0492425A1 (fr) * 1990-12-24 1992-07-01 Bridgestone Corporation Système et procédé d'extrusion compact et précis

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0492425A1 (fr) * 1990-12-24 1992-07-01 Bridgestone Corporation Système et procédé d'extrusion compact et précis
US5120206A (en) * 1991-04-08 1992-06-09 Bridgestone/Firestone, Inc. Gear metering pump for compounded elastomeric material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3038862A1 (fr) * 2015-07-17 2017-01-20 Michelin & Cie Dispositif et procede de nettoyage d'une extrudeuse pour melanges d'elastomeres
WO2017013080A1 (fr) 2015-07-17 2017-01-26 Compagnie Generale Des Etablissements Michelin Dispositif et procede de nettoyage d'une extrudeuse pour melanges d'elastomeres
US10889043B2 (en) 2015-07-17 2021-01-12 Compagnie Generale Des Etablissements Michelin Device and method for cleaning an extruder for elastomer mixtures

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