WO2005066496A1 - Drehkolbenpumpe mit axial beweglichem flügel - Google Patents
Drehkolbenpumpe mit axial beweglichem flügel Download PDFInfo
- Publication number
- WO2005066496A1 WO2005066496A1 PCT/DE2004/002788 DE2004002788W WO2005066496A1 WO 2005066496 A1 WO2005066496 A1 WO 2005066496A1 DE 2004002788 W DE2004002788 W DE 2004002788W WO 2005066496 A1 WO2005066496 A1 WO 2005066496A1
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- WIPO (PCT)
- Prior art keywords
- rotor
- pump
- drive shaft
- pump according
- bearing
- Prior art date
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Classifications
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- 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
- F01C19/00—Sealing arrangements in rotary-piston machines or engines
- F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
-
- 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
- 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
- F01C21/02—Arrangements of bearings
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- 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
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
-
- 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
- F01C21/08—Rotary pistons
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0827—Vane tracking; control therefor by mechanical means
- F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
-
- 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
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- 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
- F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
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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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0015—Radial sealings for working fluid of resilient material
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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
- 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
- F04C15/003—Sealings for working fluid between radially and axially moving parts
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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
- 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
- F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
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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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/356—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C2/3568—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member with axially movable vanes
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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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
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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
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/007—Venting; Gas and vapour separation during pumping
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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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0076—Fixing rotors on shafts, e.g. by clamping together hub and shaft
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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
- F04C2230/00—Manufacture
- F04C2230/70—Disassembly methods
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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
- F04C2240/00—Components
- F04C2240/10—Stators
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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
- F04C2240/00—Components
- F04C2240/30—Casings or housings
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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
- F04C2240/00—Components
- F04C2240/50—Bearings
- F04C2240/51—Bearings for cantilever assemblies
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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
- F04C2240/00—Components
- F04C2240/80—Other components
- F04C2240/802—Liners
Definitions
- the invention relates to a pump designed as a positive displacement pump or a rotary lobe pump.
- the main areas of application for pumps of this type which are viscous and viscous are found in the chemical, pharmaceutical and food processing industries.
- a pump of the type mentioned is known.
- This pump has a rotor which is rotatably mounted on a drive shaft which can be connected to a motor drive.
- the rotor has a radially protruding, rotating shaft collar.
- the pump inlet and outlet are separate.
- the inlet communicates with an intake space and the outlet with an outlet space.
- These two pump rooms are connected to each other via a pump channel.
- a sealing slide which is adjustable in the axial direction and which bears sealingly on both sides of the rotor collar in the axial direction, it is ensured that the medium conveyed from the inlet to the outlet by the pump channel cannot flow back past the sealing slide back to the inlet.
- the sealing slide must therefore continuously bear tightly on both sides of the rotor collar during the rotary movement of the rotor. Adequate sealing must also be present between the rotor collar and the walls of the pump channel that delimit it in the axial direction if the pumping action and thus the efficiency of the pump are not to be impaired.
- the drive shaft driving the rotor extends far into the pump chamber. Their bearing points are located on the one hand in the area of the rear housing wall and on the other outside the pump housing in a hollow cylindrical shaft carrier flanged to the rear wall of the pump housing. The rotor is thus seated on the collar end area of the drive shaft.
- the invention has for its object to provide a pump of the type mentioned, which can be operated economically, especially with high working pressures.
- the pump according to the invention is characterized in that a bearing point for the drive shaft is present within the clearance area occupied by the rotor in the axial direction.
- the drive shaft no longer projects freely into the pump chamber, but is supported in the radial direction within the clearance area occupied by the rotor in the axial direction or preferably in the clearance area occupied by the rotor collar in the axial direction.
- the extremely large deflections that have to be considered constructively in the prior art at correspondingly high working pressures no longer occur.
- the bearing designs of the drive shaft and the design of the drive shaft itself no longer have to be dimensioned to such an extent that the deflections in the cantilever region of the drive shaft become correspondingly small.
- the bearing point for the drive shaft located within the pump housing has the further advantage that the overall length of the pump is considerably shorter compared to the previously known pump; the externally flanged-on hollow cylindrical shaft support according to the prior art, on the end of which is further away from the pump housing, a bearing point for the drive shaft can now be dispensed with.
- the drive shaft can be adequately supported in the area of the rear wall of the pump and within the clearance profile taken up by the rotor or its rotor collar in the axial direction.
- the bearing point for the drive shaft inside the pump housing can be realized according to the exemplary embodiments also shown in the drawing by a hollow cylindrical shaft support which projects freely into the interior of the pump from the rear region.
- the shaft support can be designed to be sufficiently rigid so that the unavoidable deflections at its collar end are of no importance for the practical operation of the pump.
- the rotor and its rotor collar which is arranged in a rotationally fixed manner on the collar end region of the shaft carrier, it is therefore possible constructively to assume a bearing which is practically fixed in the axial direction.
- Such a pump not only builds much shorter than the pump known above in the prior art, but can also be operated with comparatively higher working pressures.
- the rotor collar must lie as close as possible to the fixed wall areas delimiting the pump channel in the axial direction in order to enable a correspondingly high efficiency of the pumps.
- stators replaceable wear parts
- the rotor can encompass the drive shaft and also the shaft support at the end in the manner of an end cap. This then allows simple assembly and disassembly of the rotor, in that the rotor can be axially pushed onto the drive shaft in a rotationally fixed manner and can be held axially immovably on the drive shaft, for example by means of a retaining or locking nut.
- the bearing point of the drive shaft can be formed on the inside of the shaft carrier.
- An additional bearing point for the rotor can be formed on the outside of the shaft carrier opposite thereto, provided that the cap wall of the rotor is not sufficiently rigid that the rotationally fixed bearing point of the rotor on the drive shaft is sufficient.
- the bearing for the drive shaft on the outside of the shaft carrier.
- This bearing point can then be used simultaneously as a bearing point acting in the axial direction for the rotor or for its cap area.
- the drive shaft attaches to the shaft carrier from the outside via the rotor.
- the respective bearing point for the drive shaft and for the rotor which is provided in the collar end region of the shaft carrier, if the latter is provided in addition to the rotationally fixed bearing of the rotor, can be arranged in the same axial cross-sectional plane.
- each bearing point can consist of several bearings lying side by side in the axial direction.
- a second bearing point for the drive shaft can be present in the region of the rear wall of the pump adjacent to the motor drive. In the case of very light pump designs, this second bearing point could also be dispensed with and the drive shaft could only be mounted in the area of the motor drive.
- the second bearing point for the drive shaft which is already available as an alternative, can then be provided in the holding flange.
- this second bearing point could also be provided in the rear wall of the pump housing.
- the shaft support projecting freely into the pump housing can be attached to the rear wall of the pump housing or also to the holding flange in a rigid manner.
- the shaft carrier which in this case is not a part of the pump housing by weight, does not have to be taken into account by weight when the pump housing is removed from the holding flange.
- these bearings can be coated with a bushing.
- a bushing remains as an assembled structural part when dismantling the rotor on the bearing or bearings and reliably seals the same unchanged.
- FIG. 1 is a vertical longitudinal section through a first embodiment of a pump according to the invention
- FIG. 2 shows a vertical longitudinal section through a second embodiment of a pump according to the invention
- FIG. 3 shows a vertical longitudinal section through a third embodiment of a pump according to the invention
- Fig. 4 is a vertical longitudinal section through a fourth embodiment of an inventive pump, with axially pulled apart individual components of the pump.
- the pump 10 shown in FIG. 1 is screwed to the rear flange 14 of its housing 12 by means of screws 16 on the holding flange 18 of a bearing block 20.
- the housing 12 is designed to be rotationally symmetrical about its axis 22, with the rear wall 14 which is circular in plan and a circular cylindrical jacket wall 24 which is integrally connected to the rear wall 14.
- the cover 28 is attached to a plurality of studs distributed circumferentially on the cover 28, only two of which are shown in FIG. 1 with their stud screw axis 30 the rear wall 14 screwed.
- the studs lead through the interior of the housing 12.
- the respective ring nut 34 screwed on the outside is shown in FIG. 1.
- an O-ring 36 is inserted in an annular groove running around the cover 28, which ensures the required tightness.
- the inner wall of the jacket wall 24 can be slightly conical in the shape of a circular cylinder or for the purpose of easier shaping when producing the one-piece piece consisting of the rear wall 14 and the jacket wall 24.
- the thread sections present at the two ends of the stud screw are smaller in diameter than the diameter of the stud screw shaft present in the interior of the housing 12, so that each stud screw which screws the cover 28 and the rear wall 14 together fix the cover 28 and the rear wall 14 in a mutual manner Keeps distance from each other.
- the bearing chair 20 has a footplate 38, which is connected to it at right angles in the present example and by means of which the housing 12 and thus the pump 10 can be set up on a base 40.
- This base 40 can also be a structural part that can be oriented as desired in space, because for example by means of a screw connection, of which two screw axes 42 are shown, the base plate 38 and thus the entire bearing bracket 20 can be releasably fixed to said base 40.
- a hollow cylindrical shaft support 50 protrudes through the rear wall 14 into the interior of the housing 12.
- the shaft support 50 is attached to the retaining flange by means of an end flange 52 by means of a plurality of screws 54, which are accessible from the outside and distributed over the circumference 18 attached.
- the shaft carrier 50 is constructed in terms of material and cross section such that its collar end region ending in the housing 12 has practically no deflection under load, at least one deflection which is negligible for the operation of the pump 10.
- a drive shaft 60 protrudes centrally through the shaft support 50.
- the right end of the drive shaft 60 in FIG. 1 is rotationally fixed by means of a feather key 62 on the driven shaft of a motor, not shown in the drawing Drive can be connected so that the drive shaft 60 can be driven in both directions of rotation.
- a rotor 70 is fixed in a rotationally fixed manner to the collar end 64 of the drive shaft 60 which ends in the rear space of the housing 12.
- the rotor 70 is - based on FIG. 1 - pushed from the left onto the collar end 64 of the drive shaft 60 and held in its fixed, rotationally fixed position by means of a lock nut 66 screwed onto the end of the drive shaft 60.
- the locking nut 66 lies sealed against the end wall 72 of the rotor 70 via an O-ring 68.
- the rotor 70 has a rotor hub 74 which has a central recess pointing towards the rear wall 14, so that the rotor hub 74 in the form of a cap engages around the collar end region 76 of the drive shaft 60 from the outside at a distance.
- the collar end region 76 is adjoined in the direction of the projecting end of the drive shaft 60 by the collar end 64 and by this the screw region for the locking nut 66.
- a tapered roller bearing 80 or inclined roller bearing is formed between the drive shaft 60 and the shaft carrier 50 in the collar end region 76.
- This tapered roller bearing 80 can absorb radial, in particular, also axial forces. Such forces acting on the rotor 70 can be transmitted or removed via its rotor hub 74 and via the drive shaft 60 to the shaft carrier 50 and ultimately to the bearing block 20.
- the tapered roller bearing 80 thus forms an existing bearing point in the interior of the housing 12 for the drive shaft 60, since the tapered roller bearing 80 is practically fixed in position in the housing 12 due to its support on the shaft support 50. The drive shaft 60 is thus supported in the region of the tapered roller bearing 80.
- the tapered roller bearing 80 is held on the left in FIG. 1 by a shoulder widening 82 of the drive shaft 60 and on the opposite right side by an axially supported bearing inner ring 84 seated in a shaft groove. Radially on the outside, the tapered roller bearing 80 is held in a fixed position between a support ring 86 screwed onto the end of the shaft support 50 and a recess 88 formed in the shaft support 50.
- a shaft sealing ring 90 is arranged on the outside of the support ring 86, which sealingly rests on the shoulder widening 82.
- a radial needle bearing 92 is arranged between the shaft carrier 50 and the rotor hub 74.
- the rotor hub 74 is also supported on the shaft carrier 50 via this needle bearing 92.
- This bearing 92 is - with reference to FIG. 1 - sealed on its left side by a shaft sealing ring 94, which is present between the rotor hub 74 and the shaft carrier 50.
- a radial seal bearing 100 is connected to the radial needle bearing 92.
- This sealing ring receptacle 100 lies against the inside of the rotor hub 74 in a rotationally fixed manner.
- the end face of the sealing ring receptacle 100 which has a rotationally symmetrical cross section, projects through the rear wall 14.
- a sharp edge 104 facing away from the wall end area 102 ensures that the medium escaping from the shaft support 50 emerges from the area of the sealing ring receptacle 100.
- This leakage medium enters an intermediate space 106 formed between the rear wall 14 and the holding flange 18, from which it can exit to the outside via openings formed in the holding flange 18 and not shown in the drawing.
- a shaft sealing ring 110 is supported on a radially projecting shoulder 108 of the sealing ring receptacle 100 and rests sealingly on the outside of the shaft carrier 50. Together with the shaft sealing ring 94, it seals the radial needle bearing 92 on both sides in the axial direction.
- a ball bearing 114 In the area of the holding flange 18 there is another bearing between the drive shaft 60 and the shaft carrier 50 in the form of a ball bearing 114.
- This ball bearing 114 is sealed off from the outside of the holding flange 18 by means of a shaft sealing ring 116, which in turn is held by a screw ring 118 screwed onto the holding flange 18 from the outside.
- the tapered roller bearings 80 and the radial needle bearing 92 are arranged in the same cross-sectional plane 112.
- This cross-sectional plane 112 lies within the axial region of the rotor hub 74 and, moreover, also in the axial cross-sectional region of the rotor collar 120 integrally formed on the rotor hub 74.
- This rotor collar 120 has a circumferential wave-like shape, as is described in detail in DE 34 18 708 A1 already mentioned above with respect to the prior art.
- the pump channel 124 In the lower area of the housing 12 there is a pump channel 124 within which the rotor collar 120 moves back and forth in the axial direction when the drive shaft 60 rotates.
- the pump channel 124 is framed by a stator 130, which is composed of two stator halves 132, 134.
- the two stator halves 132, 134 are identical in cross-section and lie closely together via a common contact surface 136.
- the two stator halves 132, 134 are kept pressed in between the cover 28 and the rear wall 14.
- the stud screws already mentioned above, which hold the cover 28 at a fixed position on the rear wall 14, also pass through the stator 130 or through its two stator halves 132, 134, outside the pump channel 124.
- the cover 28 has a central, circularly projecting cover area 138.
- a rotationally symmetrical front sleeve 140 is partially seated in the inner arch formed thereby.
- This front sleeve 140 is held screwed to the cover 28 or to its central cover area 138 via screws 142 accessible from the outside.
- the front sleeve 140 surrounds the end of the rotor hub 74 at a distance and the locking nut 66 screwed onto the drive shaft 60.
- its inner wall 144 is curved, without sharp edges, so that it can be cleaned easily.
- the front sleeve 140 is sealed off from the cover 28 or the rotor hub 74 and the left stator half 132 by means of O-rings 146, 148 fitted all round in the front sleeve 140.
- the top side of the front sleeve 140 forms the bottom of the intake space or the outlet space 150, via which the pump channel 124 is connected on the one hand to the inlet 152 and on the other hand to the outlet of the pumps 10.
- the longitudinal axes 154 of the inlet 152 and the outlet are at right angles to one another in the present example. Aligned to the top of the front sleeve 140 is on the
- a retaining ring 160 is positioned with its top. With its upper side, this retaining ring 160, like the front sleeve 140, forms the bottom of the intake space or the outlet space 150.
- the retaining ring 160 represents the sealing bottom area of the suction space or the outlet space 150 between the rotor hub 74 and the rear wall 14 of the housing 12.
- These latter slide rings 165, 167 are pressed against the slide ring 164 and 166 by spring rings 168 and 170, respectively, which are supported on the rear on radially projecting shoulders 172 and 174 of the retaining ring 160.
- the retaining ring 160 is fastened to the rear wall 14 by means of screws 176 arranged around the circumference.
- the slide rings 165, 167 can be made of any suitable material, such as, for example, in particular also of ceramic material.
- the rotating seal rings 164, 166 can in particular consist of metallic material.
- the seals formed from the two sliding rings 164, 165 and 166, 167 can both be arranged in the axial direction in any mutual orientation.
- the suction space and the outlet space 150 are separated from one another in terms of pressure by a slide guide 162, which represents a sealed shut-off plate between these two spaces.
- a sealing slide 182 bears back and forth in the axial direction.
- the sealing slide 182 is arranged in the outlet space 150, so that due to the pressure prevailing there, which is greater than the pressure prevailing in the suction space, it bears tightly against the slide guide 162 during its back and forth movement.
- the rotor collar 120 lies with its two collar walls on the side in the axial direction, of which one side wall 186 is visible in FIG. 1.
- This design principle is also described in detail in the aforementioned DE 34 18 708 AI.
- the sealing slide 182 is held on its opposite side to the slide guide 162 by structural parts, not shown in the drawing, which are fixedly connected to the housing 12, so that the sealing slide 182, even when fallen compared to the illustration in FIG. 1, on the retaining flange 18 screwed rotary positions maintains its tight position on the slide guide 162 and does not fall away from the slide guide 162, for example in the circumferential direction.
- the slide guide 162 can be fixed in position, for example, by one of the stud bolts shown with its axis 30 between the cover 28 and the rear wall 14.
- a plurality of leak drains 190 protrude from the rear wall 14 into the intermediate space 106 distributed over the circumference.
- These hose- or tube-shaped leak drains 190 connect the individual bearing spaces to one another via longitudinal and transverse bores (not shown in the drawing) which are formed in the shaft support 50, so that they are to be used for lubricating these bearings.
- the pump 10.2 shown in FIG. 2 is basically constructed like the pump 10 described above. Its tapered roller bearing 80 and radial needle bearing 92 also lie in the same axial cross-sectional plane 112, which lies within the clearance area occupied by the rotor collar 120 in the axial direction.
- the cover 28.2 of the pump 10.2 is flat on the outside and its rear wall 14.2 is designed without the cross-sectional reinforcement present in the lower region of the rear wall 14.
- the retaining ring 160.2 which corresponds to the retaining ring 160, has a slightly different cross-sectional shape than the retaining ring 160 due to the different spatial conditions to the pump 10. Its function is the same as that of the retaining ring 160; Via two slide rings 165.2, 167.2, which are pushed away in the axial direction by spring rings, it bears sealingly against sealing rings 164.2 and 166.2, which are molded in the rotor hub 74.2.
- the tapered roller bearing 80 is supported on its radial inside instead of the bearing inner ring 84 present in the pump 10 by a screw ring 84.2.
- the intermediate space 106 is connected to the individual bearings via the leak drains 190 and transverse and longitudinal bores 196, 198, so that bearings can be provided with oil lubrication on the one hand, and corresponding media in the intermediate space 106 from leaks and from there not through in the drawing shown openings in the holding flange 18 or 18.2 can flow out of the pump 10 or 10.2.
- the pump 10.3 shown in FIG. 3 which is also basically functional like the pumps 10 and 10.2, there are two radial needle bearings 200, 202 in the axial collar end region 76.3 of the drive shaft 60.3, specifically on the outside of the shaft carrier 50.3.
- the rotor hub 74.3 is designed to be sufficiently rigid so that the loads acting on the rotor hub 74.3 during operation of the pump 10.3 and thus on the drive shaft 60.3 via the collar end region 64.3 can be introduced into the shaft carrier 50.3.
- the drive shaft 60.3 is, as it were, suspended from the shaft support 50.3 via the rigid rotor 74.3.
- the height of the tapered roller bearing 80 (FIGS. 1 and 2) existing between the shaft carrier and the drive shaft would be gained. This height can be used due to the stronger design of the shaft support and the drive shaft in the stronger pump.
- the bearing present in the region of the flange 52.3 of the shaft carrier 50.3 is designed as a tapered roller bearing 210. This tapered roller bearing is sealed on its axial side facing the rotor by a shaft sealing ring 203 held axially in a radial recess.
- the tapered roller bearing 210 is held immovably by a screw ring 204 on the drive shaft 60.3.
- a retaining ring 206 is held screwed to the flange 52.3 of the shaft carrier 50.3 from the outside by means of screws 117.
- a shaft sealing ring 208 is seated in the retaining ring 206, which together with the shaft sealing ring 203 seals the tapered roller bearing 210 on both sides in the axial direction.
- the flange 52.3 of the shaft carrier 50.3 could be screwed to a bearing bracket or to the holding flange of a bearing bracket 20. However, it is also possible to use the flange 52.3 of the shaft support 50.3 as the holding flange 18 and - for example detachably - to fasten it to a footplate corresponding to the footplate 38 or to another structural part.
- the pump 10.4 shown in FIG. 4 also basically works in the same way as the pumps 10, 10.2 and 10.3 mentioned above.
- the pump 10.4 has a pot-like housing 12.4, which can be closed by a cover 28.4 on its left side in FIG. 4, as has already been explained for the pumps described above.
- a shaft support 50.4 with the drive shaft 60.4 mounted on it and with the retaining ring 160.4 fastened to it by means of screws 176 is pushed freely projecting into the interior of the housing 12.4 from the outside and can be screwed onto the rear wall 14.4 by means of screws 16.
- the radial needle bearings 200 and 202 described in the above pumps are not present in the pump 10.4 between the shaft carrier 50.4 and the rotor 70.4, as is the case with the pump 10.3, for example, but these two radial needle bearings 200, 202 are covered with a sleeve 220.
- This bushing 220 has a central opening in its bottom region 222 on the left in FIG. 4 so that it can be pushed onto the drive shaft 60.4 from the right as far as the position shown in FIG. 4, based on FIG. 4. After the sleeve 220 has been pushed on, it is held by a nut 228 screwed onto the drive shaft 60.4.
- the right end of the bushing 220 in FIG. 4 has a flange 224, in which two slide rings 164.4, 166.4 are fitted radially one above the other. These two slide rings 164.4, 166.4 abut two slide rings 165.4 and 167.4, respectively, which are also embedded in the retaining ring 160.4. These slide rings correspond to the corresponding slide rings present between the retaining ring and the rotor in the above pumps. In the pump 10.4, these sliding rings are not present between the rotor 70.4 and the retaining ring 160.4, but between the bushing 220 present in the pump 10.4 and the retaining ring 160.4 in a comparable manner.
- Ventil channels are provided in the rotor 70.4.
- An O-ring 68.4 is countersunk in the end wall 72.4 of the rotor hub 74.4 in such a way that it circumferentially frames the air bores 232 radially from the outside.
- the locking nut 66 screwed onto the head 234 of the drive shaft 60.4 in the assembled state lies sealingly against the O-ring 68.4.
- the air bores 232 are sealed off by the locking nut 66 in the assembled state of the pump 10.4.
- the shaft support 50.4 can, as already described for the pumps above, be screwed onto the rear wall 14.4 by means of screws 16.
- the structural part which can be pulled off the rear wall 14.4 by loosening the screws 16 is shown partially pulled out to the right in the axial direction in FIG. 4.
- the rotor collar 120.4 of the rotor 70.4 present in the interior of the pump 10.4 is shown with an axially central region. Furthermore, two axial end positions of the collar 120.4 are shown in dash-dot lines with the reference numbers 120.4a and 120.4b.
- the rotor collar 120.4 is always sealingly in an opening of the sealing slide 182 in the axial direction, right and left, as has also been described above.
- the pump 10.4 there is also a front sleeve 140 between the end wall 72.4 and the cover 28.4.
- the radial outside of the front sleeve 140 together with the rotor hub 74.4 and the outer surface 226 of the sleeve 220 and the outer surface of the retaining ring 160.4, represents the bottom of the suction space or the outlet space, via which the pump channel on the one hand with the inlet 152 and on the other hand with the one shown in FIG. 4 outlet (not shown) of the pumps 10.4 is connected in each case.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/597,044 US7614863B2 (en) | 2004-01-09 | 2004-12-21 | Rotary pump provided with an axially movable blade |
EP04802973A EP1721078A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
DE112004002786T DE112004002786A5 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem Flügel |
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004000185.3 | 2004-01-09 | ||
DE202004000183.7 | 2004-01-09 | ||
DE202004000188.8 | 2004-01-09 | ||
DE202004000189.6 | 2004-01-09 | ||
DE202004000186.1 | 2004-01-09 | ||
DE200420000184 DE202004000184U1 (de) | 2004-01-09 | 2004-01-09 | Pumpe |
DE202004000184.5 | 2004-01-09 | ||
DE200420000185 DE202004000185U1 (de) | 2004-01-09 | 2004-01-09 | Pumpe |
DE200420000183 DE202004000183U1 (de) | 2004-01-09 | 2004-01-09 | Pumpe |
DE200420000186 DE202004000186U1 (de) | 2004-01-09 | 2004-01-09 | Pumpe |
DE200420000188 DE202004000188U1 (de) | 2004-01-09 | 2004-01-09 | Pumpe |
DE200420000189 DE202004000189U1 (de) | 2004-01-09 | 2004-01-09 | Dichtungsflächen zwischen einem wellenförmigen Rotorkragen und den Laibungswänden eines Schlitzes in einem verstellbaren Schieber einer Pumpe sowie Vorrichtung zum Herstellen dieser Dichtungsflächen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005066496A1 true WO2005066496A1 (de) | 2005-07-21 |
Family
ID=34753997
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002792 WO2005066500A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002790 WO2005066498A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002791 WO2005066499A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002789 WO2005066497A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002793 WO2005066501A1 (de) | 2004-01-09 | 2004-12-21 | Dichtungsflächen zwischen einem wellenförmigen rotorkragen und einem verstellbaren schieber einer pumpe |
PCT/DE2004/002788 WO2005066496A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
Family Applications Before (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002792 WO2005066500A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002790 WO2005066498A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002791 WO2005066499A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002789 WO2005066497A1 (de) | 2004-01-09 | 2004-12-21 | Drehkolbenpumpe mit axial beweglichem flügel |
PCT/DE2004/002793 WO2005066501A1 (de) | 2004-01-09 | 2004-12-21 | Dichtungsflächen zwischen einem wellenförmigen rotorkragen und einem verstellbaren schieber einer pumpe |
Country Status (4)
Country | Link |
---|---|
US (1) | US7614863B2 (de) |
EP (5) | EP1721078A1 (de) |
DE (6) | DE112004002786A5 (de) |
WO (6) | WO2005066500A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012034592A1 (en) * | 2010-09-15 | 2012-03-22 | Watson-Marlow Gmbh | Rotary displacement pump for pumping solids emulsions, especially liquid explosives |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100128848A1 (en) * | 2008-11-21 | 2010-05-27 | General Electric Company | X-ray tube having liquid lubricated bearings and liquid cooled target |
DE102015116769A1 (de) * | 2015-10-02 | 2017-04-06 | Watson-Marlow Gmbh | Pumpe und Sperrelement |
DE102015116770A1 (de) * | 2015-10-02 | 2017-04-06 | Watson-Marlow Gmbh | Pumpe und Sperrvorrichtung |
DE102015116768A1 (de) | 2015-10-02 | 2017-04-20 | Watson-Marlow Gmbh | Pumpe |
DE102017011154B3 (de) * | 2017-12-02 | 2018-10-11 | Gottfried Kowalik | Rotierende Verdrängerpumpe zum Fördern von fließfähigen Stoffen, Laufrad für eine solche und Verfahren zum Fördern mit einer solchen Verdrängerpumpe |
US20220145880A1 (en) * | 2020-11-11 | 2022-05-12 | Server Products, Inc. | Flexible impeller pump for flowable food product |
BE1028910B1 (nl) * | 2020-12-16 | 2022-07-19 | Univ Brussel Vrije | Element voor het samenpersen of expanderen van een gas en werkwijze voor het regelen van dergelijk element |
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DE3418708A1 (de) * | 1983-05-21 | 1984-11-22 | Sine Pumps N.V., Curacao, Niederländische Antillen | Pumpe |
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DE56694C (de) * | C. FlLTZ, J. FlLTZ und G. FlLTZ in Paris, Rue Lacourbe 43 | Kraftmaschine mit schraubenförmigem Kolben | ||
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FR639381A (fr) * | 1927-01-15 | 1928-06-20 | Pompe rotative volumétrique | |
US2583704A (en) * | 1945-08-28 | 1952-01-29 | Nicholls Kenneth Howard | Rotary pump and motor differential hydraulic transmission |
GB807734A (en) * | 1956-05-31 | 1959-01-21 | Wm R Whittaker Co Ltd | Improvements in or relating to rotary device for use as a pump or fluid motor |
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JPS5759091A (en) * | 1980-09-26 | 1982-04-09 | Okimoto Tamada | Screw pump |
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-
2004
- 2004-12-21 EP EP04802973A patent/EP1721078A1/de not_active Withdrawn
- 2004-12-21 WO PCT/DE2004/002792 patent/WO2005066500A1/de active Application Filing
- 2004-12-21 DE DE112004002786T patent/DE112004002786A5/de not_active Withdrawn
- 2004-12-21 WO PCT/DE2004/002790 patent/WO2005066498A1/de active Application Filing
- 2004-12-21 DE DE112004002793T patent/DE112004002793A5/de not_active Withdrawn
- 2004-12-21 WO PCT/DE2004/002791 patent/WO2005066499A1/de active Application Filing
- 2004-12-21 WO PCT/DE2004/002789 patent/WO2005066497A1/de active Application Filing
- 2004-12-21 EP EP04802976A patent/EP1714036B1/de not_active Expired - Fee Related
- 2004-12-21 EP EP04816274A patent/EP1714037A1/de not_active Withdrawn
- 2004-12-21 EP EP04816275A patent/EP1714038A1/de not_active Withdrawn
- 2004-12-21 WO PCT/DE2004/002793 patent/WO2005066501A1/de active Application Filing
- 2004-12-21 DE DE112004002792T patent/DE112004002792A5/de not_active Withdrawn
- 2004-12-21 WO PCT/DE2004/002788 patent/WO2005066496A1/de active Application Filing
- 2004-12-21 DE DE112004002794T patent/DE112004002794A5/de not_active Withdrawn
- 2004-12-21 DE DE112004002789T patent/DE112004002789A5/de not_active Withdrawn
- 2004-12-21 US US10/597,044 patent/US7614863B2/en not_active Expired - Fee Related
- 2004-12-21 DE DE112004002788T patent/DE112004002788A5/de not_active Withdrawn
- 2004-12-21 EP EP04802974A patent/EP1714035A1/de not_active Withdrawn
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US3133506A (en) * | 1961-08-15 | 1964-05-19 | Luciani Louis | Gear pump having internal bearings and seals |
DE3418708A1 (de) * | 1983-05-21 | 1984-11-22 | Sine Pumps N.V., Curacao, Niederländische Antillen | Pumpe |
DE19522560A1 (de) * | 1995-06-21 | 1997-01-02 | Sihi Ind Consult Gmbh | Vakuumpumpe mit einem Paar innerhalb eines axial durchströmten Schöpfraums umlaufender Verdrängerrotoren |
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Title |
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MASO PROCESS-PUMPEN; SUNDYNE CORPORATION: "MANUAL - TECHNICAL DOCUMENTATION MASO-SINE-PUMP MR 160", ANNOUNCEMENT SUNDYNE, January 2003 (2003-01-01), pages COMPLETE11, XP001219572 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012034592A1 (en) * | 2010-09-15 | 2012-03-22 | Watson-Marlow Gmbh | Rotary displacement pump for pumping solids emulsions, especially liquid explosives |
US8985981B2 (en) | 2010-09-15 | 2015-03-24 | Watson Marlow Gmbh | Rotary displacement pump for pumping solids emulsions, especially liquid explosives |
Also Published As
Publication number | Publication date |
---|---|
WO2005066498A1 (de) | 2005-07-21 |
EP1721078A1 (de) | 2006-11-15 |
WO2005066497A1 (de) | 2005-07-21 |
DE112004002786A5 (de) | 2007-05-24 |
WO2005066501A1 (de) | 2005-07-21 |
DE112004002789A5 (de) | 2007-05-24 |
EP1714037A1 (de) | 2006-10-25 |
US7614863B2 (en) | 2009-11-10 |
DE112004002788A5 (de) | 2007-05-24 |
DE112004002792A5 (de) | 2007-05-24 |
DE112004002794A5 (de) | 2007-05-24 |
US20070148027A1 (en) | 2007-06-28 |
WO2005066499A1 (de) | 2005-07-21 |
EP1714038A1 (de) | 2006-10-25 |
EP1714036B1 (de) | 2012-03-28 |
DE112004002793A5 (de) | 2007-05-24 |
EP1714035A1 (de) | 2006-10-25 |
WO2005066500A1 (de) | 2005-07-21 |
EP1714036A1 (de) | 2006-10-25 |
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