EP2606234B1 - Rotary piston pump - Google Patents

Rotary piston pump Download PDF

Info

Publication number
EP2606234B1
EP2606234B1 EP11748632.4A EP11748632A EP2606234B1 EP 2606234 B1 EP2606234 B1 EP 2606234B1 EP 11748632 A EP11748632 A EP 11748632A EP 2606234 B1 EP2606234 B1 EP 2606234B1
Authority
EP
European Patent Office
Prior art keywords
pump
rotary
housing
rotary lobe
inlet
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
EP11748632.4A
Other languages
German (de)
French (fr)
Other versions
EP2606234A2 (en
Inventor
Paul Krampe
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.)
Hugo Vogelsang Maschinenbau GmbH
Original Assignee
Hugo Vogelsang Maschinenbau GmbH
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 Hugo Vogelsang Maschinenbau GmbH filed Critical Hugo Vogelsang Maschinenbau GmbH
Priority to PL11748632T priority Critical patent/PL2606234T3/en
Priority to SI201130788A priority patent/SI2606234T1/en
Publication of EP2606234A2 publication Critical patent/EP2606234A2/en
Application granted granted Critical
Publication of EP2606234B1 publication Critical patent/EP2606234B1/en
Priority to HRP20160309TT priority patent/HRP20160309T1/en
Priority to CY20161100280T priority patent/CY1117347T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12Rotary-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/001Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086Carter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12Rotary-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
    • F04C2/14Rotary-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
    • F04C2/16Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/02Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for several machines or pumps connected in series or in parallel
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12Rotary-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
    • F04C2/14Rotary-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
    • F04C2/18Rotary-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/30Casings or housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/50Bearings
    • F04C2240/51Bearings for cantilever assemblies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/80Other components
    • F04C2240/801Wear plates

Definitions

  • the invention relates to a rotary piston pump for conveying a solids-containing fluid medium, comprising an inlet opening and an outlet opening for the medium to be conveyed, two arranged in a pump housing rotary piston with interlocking rotary lobes, each of the two rotors torque-fixed to one shaft and by the respective Shaft is drivable, and wherein the two shafts are coupled together by a transmission disposed in a transmission housing.
  • the invention further relates to a rotary lobe pump kit for providing rotary lobe pumps.
  • Rotary pumps of the type mentioned are, for example, from DE 10 2007 054 544 A1 and the EP 1 624189 B1 the applicant and from the DE 10 2005 017 575 A1 and the WO 2007/026 109 A1 known and serve to promote a fluid medium containing solids.
  • a fluid medium containing solids For example, with a rotary pump inhomogeneous liquids, such as liquid manure can be promoted.
  • the medium to be delivered passes through an inlet opening arranged on the pump housing into the interior of the pump housing, where it is conveyed by the intermeshing rotary lobe wings of two driven rotary lobes in the direction of an outlet opening arranged on the pump housing and leaves the interior of the pump housing again through the outlet opening.
  • US 6,152,719 discloses a gear pump having a front plate, a pump housing, a back plate, a seal housing, a drive shaft assembly, a Mitlaufwellenan extract, which are each mounted in support bearings.
  • a gear pump having a front plate, a pump housing, a back plate, a seal housing, a drive shaft assembly, a Mitlaufwellenan extract, which are each mounted in support bearings.
  • the pump housing is located between the front panel and the rear panel.
  • the back plate acts as a partial support for the drive shaft and the counter shaft.
  • the invention is based on the finding that an advantageous rotary pump arranged by a departure from the usual design with the pump housing Inlet and outlet ports can be realized with as direct access to the rotary piston in the pump housing.
  • the inlet and outlet openings are arranged on a connection housing.
  • the two rotary pistons are arranged, preferably in a pump chamber formed in the interior of the pump housing.
  • the two rotary pistons are driven in opposite directions, with their rotary lobes meshing to promote the medium.
  • connection housing can be firmly integrated into a pipeline system via the inlet and outlet openings and only the pump housing must be accessible for maintenance of the rotary pump.
  • This embodiment of the rotary piston pump according to the invention with a spatial separation of the pump housing with the rotary piston of the inlet and outlet ports used for connection of the rotary piston pump on pipes allows on the one hand a very compact design of the rotary lobe pump and on the other hand a maintenance-friendly rotary lobe pump, as exposed to increased wear and therefore more often to be exchanged rotary piston so independent of the connection housing and the pipes to be connected and arranged are accessible.
  • the terminal housing is offset from the pump housing in an axial direction parallel to the shafts.
  • the inlet and outlet openings in an axial direction, which is parallel to the waves, from the pump housing, in particular to a pump chamber formed in the interior of the pump housing are spaced or adjacent thereto. In this way it can be ensured that the adjoining the inlet and outlet ports are spaced from the pump housing and the pump housing is easily accessible.
  • the transmission housing and the connection housing form a structural unit-the transmission unit.
  • the gear housing and the connection housing can each consist of several components or each formed in one piece. It is particularly preferred that the gear unit is formed as a whole in one piece, i. the transmission housing and the connection housing are formed as a continuous, one-piece component.
  • the transmission housing is arranged at least partially within the connection housing and further preferably at least one flow space is formed between the connection housing and the transmission housing, through which medium can be flowed through.
  • the at least one flow space is preferably in fluid communication with the inlet or outlet opening and the interior of the pump housing, so that flowing through the inlet opening medium through the flow space to a arranged in the interior of the pump housing and the rotary piston pump chamber and from there via the same or can reach a further flow space to the outlet opening.
  • the pump housing and the gear unit are releasably connected to each other.
  • the pump housing may be releasably secured to the terminal housing, the transmission housing or both the connection housing and the transmission housing. In this way, the pump housing of the rotary pump can be removed to wait for example, the rotary piston or replace. Due to the fact that, according to the invention, the inlet and outlet openings are not arranged on the pump housing, inlet and outlet lines connected to the inlet and outlet openings do not have to be dismantled during maintenance of the rotary pump, but can remain connected to the connection housing even when the pump housing is removed. By being able to completely remove the pump housing from the gear unit and thus fully expose the rotary pistons, the accessibility the rotary piston and thus their maintenance and possibly assembly / disassembly considerably easier.
  • the invention can be further developed in that the two rotary pistons are detachably fastened to the respective shaft.
  • the invention can be further developed by a wear plate arranged between the pump housing and the gear unit, wherein the wear plate is preferably releasably attached to the gear unit.
  • This preferred development of the rotary lobe pump according to the invention has the advantage that the ease of maintenance of the rotary lobe pump is further improved in that the wear plate is arranged at the junction of gear unit and pump housing and therefore very easily accessible and can be quickly replaced. It is particularly preferred that the wear plate is releasably secured to the gear unit, so that for example when removing the pump housing from the gear unit to replace the rotary piston, the wear plate on the one hand easily accessible, but on the other hand is stably fixed to the gear unit, if an exchange or disassembly of the wear plate should take place at another time.
  • the wear plate may be releasably secured to the terminal housing, the transmission housing, or both the terminal housing and the transmission housing.
  • the rotary piston pump has only a single wear plate.
  • the invention can be further developed in that the two shafts of the gear unit are rotatably mounted and in each case a portion of the shafts protrudes into a pump chamber formed in the interior of the pump housing.
  • the pump housing has no storage for the two shafts.
  • the bearings for the two drive shafts of the rotary pistons are located in the gear unit, preferably in the gear housing.
  • the waves protrude in such a way into the pump chamber in the pump housing into which the two rotary pistons are fixed torque-resistant on the waves and can be driven by the respective shaft accordingly.
  • the shafts are not additionally supported by bearings in the pump housing.
  • Another advantage of this training is that in this way the pump housing can be particularly simple and therefore can be made faster and cheaper than housing parts having shaft bearings.
  • a particularly preferred further development form therefore also provides that the pump housing is formed in one piece.
  • a one-piece design of the pump housing over a known in the prior art training in two half-shells has the advantage that the pump housing can be produced cheaper, easier and faster to assemble and disassemble is as a two-part pump housing and an additional separation point, which must be sealed and therefore always a risk of leakage, can be avoided.
  • the invention can be developed by connecting the inlet opening via a first flow channel and the outlet opening via a second flow channel to a pump chamber formed in the interior of the pump housing, at least a part of the first and second flow channel extending in a substantially axial direction, which is arranged parallel to the waves.
  • connection housing it is necessary to provide flow channels through which the medium to be delivered can pass from the inlet opening into the pump chamber formed in the interior of the pump housing and from the pump chamber to the outlet.
  • the flow channels are arranged at least in sections axially, that is to say parallel to the axis of rotation of the shafts.
  • the flow channels may be formed within or as part of one or more flow spaces between the connection housing and the transmission housing.
  • the invention can be developed by arranging the inlet opening and the outlet opening in the operating state of the rotary piston pump in the upper half of the connection housing.
  • the inlet opening and the outlet opening are arranged in the operating state of the rotary piston pump on the connection housing such that a first axis which is arranged at right angles to a plane comprising the inlet opening, and a second axis which is perpendicular to an outlet opening Plane is arranged, each inclined at an angle of 45 ° to a vertical.
  • This form of training has not only the advantage that a very good liquid reservoir and a high power density can be achieved, but also that of the inlet and Outlet opening to be connected inlet and outlet can be variably adapted to different installation situations.
  • a particularly preferred further development form is characterized by an inlet connection adjoining the inlet opening with an inlet flange and an outlet connection with an outlet flange adjoining the outlet opening, wherein the inlet connection and the outlet connection are designed and fastened to the connection housing in such a way that in a first fastening position the inlet - And / or the outlet in the operating state of the rotary pump is arranged horizontally or are and / or in a second mounting position of the inlet and / or the outlet in the operating state of the rotary pump is arranged vertically or are.
  • inlet and outlet ports are provided, which can be arranged and fastened to the inlet or outlet opening on the connection housing and furthermore each have an inlet or outlet flange for connecting the inlet or outlet connection to a pipeline.
  • the inlet and the outlet are designed such that they can be arranged in at least two different ways at the inlet or outlet port on the connection housing:
  • the respective nozzle can be arranged so that the associated flange in the operating state the rotary lobe pump is arranged horizontally or vertically.
  • connection housing has at least one releasably closable drainage bore, through which the medium to be conveyed can be discharged.
  • connection housing in particular at least one formed between the connection housing and the transmission housing flow space is enabled and so, for example, during a maintenance when opening the rotary pump no promotional Medium runs after.
  • the drain hole is opened before maintenance.
  • the at least one drain hole is preferably closed in order to prevent an unwanted escape of the medium to be conveyed.
  • a rotary lobe pump kit for providing rotary lobe pumps of different size and / or power, comprising a rotary lobe pump according to the invention as described above and further characterized by at least two other lobes of other size with interlocking rotary lobes, wherein the two shafts and the at least two further rotary lobes another size are formed such that the at least two further rotary pistons of other size are detachably fastened on the respective one of the two shafts.
  • a rotary lobe pump according to the invention and its further developments can form part of a rotary lobe pump kit, which makes it possible to convert a rotary lobe pump according to the invention to a rotary lobe pump according to the invention having a different size or a different power by replacing the rotary lobes.
  • the rotary lobe pump kit has two pairs of rotary pistons of different sizes, in particular of different lengths, so that either the first pair of two rotary lobes is fastened to the shafts or the second pair of two rotary lobes.
  • a rotary piston pump set according to the invention can also have more than two pairs of rotary pistons of different sizes.
  • the rotary pump can be changed very quickly and easily in terms of size or performance by replacing the rotary piston.
  • the rotary lobe pump kit according to the invention can be developed by providing at least one further pump housing of a different size, wherein the gear unit and the at least one further pump housing of a different size are designed such that the at least one further pump housing of a different size can be detachably fastened to the gear unit.
  • the rotary piston pump 100 has an inlet opening 111 and an outlet opening 112 for the medium to be conveyed.
  • an inlet nozzle 115 are attached to an inlet flange 117, via which the rotary piston pump 100 in the operating state to a pipeline (not shown) can be connected.
  • an outlet port 112 may, as also in the FIGS. 1 to 7 it can be seen, an outlet port 116 are arranged with a Auslassflansch 118, via which the rotary piston pump 100 in the operating state on a pipe (not shown) can be connected.
  • FIGS. 1 and 2 show an embodiment of a rotary piston pump 100 according to the invention, in which the nozzles 115, 116 are arranged so that the respective flanges 117,118 of the nozzles 115, 116 are arranged substantially vertically in the installed state of the rotary piston pump, so that to be connected to these flanges 117, 118 pipeline (not shown) extends substantially horizontally, so-called 90 ° connection.
  • the two nozzles 115, 116 formed as a gooseneck connection, ie, the two flanges 117, 118 are arranged horizontally in the installed state of the rotary pump, so that to the flanges 117, 118 to be connected pipes in the installed state of the rotary piston Pump run substantially vertically.
  • the rotary piston pump 100 of the invention can be very easily transformed by a gooseneck in a 90 ° connection and vice versa or the rotary pump 100 without any nozzle or can only be used with a nozzle.
  • the inlet and the outlet openings 111, 12 are arranged on a connection housing 151 of the rotary piston pump 100.
  • the rotary piston pump 100 further has a pump housing 140.
  • a pump chamber 141 is formed, in which two rotary pistons 121, 122 are arranged, whose rotary lobes engage with each other.
  • the first rotary piston 121 is fixed torque-fixed on a shaft 131 and driven by this.
  • the second rotary piston 122 is (not shown) fixed torque on a second shaft and driven by this.
  • the two shafts are driven in opposite directions and coupled together for this purpose via a corresponding gear.
  • Such a transmission (not shown) is located in a transmission housing 152.
  • the transmission housing 152 and the connection housing 151 together form a transmission unit 150.
  • the transmission housing 152 is arranged at least partially within the connection housing 151.
  • a flow space 153 is formed, via which the inlet opening 111 is in fluid communication with the pump chamber 141.
  • the rotary piston pump 100 has a further flow space (not shown) via which the outlet opening 112 is in fluid communication with the pump chamber 141.
  • the inlet and outlet ports 111, 112 are spaced from the pump housing 140 in an axial direction that is parallel to the shaft 131. Terminal housing 151 and pump housing 140 are offset in the axial direction and adjoin one another in the axial direction. As in particular in Fig. 6 can be seen, inlet and outlet ports 111, 112 and pump chamber 141 (in each case based on their viewed in the axial direction center) at a distance A from each other.
  • the pump housing (140) is detachably connected to the transmission unit 150 at a connection or interface 170.
  • One of the two shafts, here the shaft 131, is guided out of the gear housing 152 and can be rotated by means of a drive motor (not shown). This rotation is transmitted through the transmission (not shown) in the transmission housing 152 to the other shaft (not shown).
  • the shaft 131 is rotatably supported in the transmission housing 152 and protrudes with a portion 131 a into the pumping chamber 141.
  • On this section 131a of the rotary piston 121 is removably fixed torque.
  • the second rotary piston 122 is on the same manner attached to the second shaft, not shown.
  • the pump housing 140 has no bearing for the two shafts and may therefore be formed in one piece. In this way, results in a particularly inexpensive to produce pump housing 140, which can be poured without a core and requires only a clamping in the processing.
  • the one-piece design of the pump housing 140 further reduces the number of housing separation points, so that the accuracy of fit of the housing parts can be increased in an advantageous manner.
  • a wear plate 160 is arranged, which is releasably secured to the gear unit 150.
  • the inventive construction of the rotary piston pump 100 it is possible to provide only a single wear plate 160, so that in the maintenance time and costs can be saved.
  • the fluid medium entering the connection housing through the inlet connection 115 and the inlet opening 111 passes through a first flow channel 113 into the pump chamber 141 and from there through a second flow channel 114 through the outlet opening 112 and the outlet connection 116 out of the rotary piston pump 100.
  • the two flow channels 113, 114 each have a first portion 113 a, 114 a, which extends in the gear unit 150, and a second portion 113 b, 114 b, which extends in the pump housing 140.
  • the two flow channels 113, 114 are partially parallel to the shaft 131, d. H. arranged in a substantially axial direction of the rotary piston pump 100 relative to the axis 180 of the rotary piston pump 100.
  • the flow channel 113 is at least partially formed within the flow space 153 or constitutes a part of the flow space 153. The same applies to the flow channel 114 and another, not shown flow space. Due to the at least partially axial inflow or outflow of the fluid medium through the flow spaces or channels, the axial distance A between inlet and outlet openings 111, 112 and pump chamber 141 is overcome.
  • the arrangement of the inlet opening 111 and the outlet opening 112 in the operating state of the rotary lobe pumps 100 in the upper half of the connection housing 151 always results in a very good liquid reservoir in the rotary lobe pump 100 and in particular in the pump chamber 141, especially in combination with the at least partially axial inlet. or drainage of the fluid medium.
  • the terminal housing 151 may have two releasably closable drain holes 154a, b with releasably attached closure lids 155a, b, through which the medium to be conveyed can be discharged.
  • This facilitates maintenance of the rotary lobe pump 100, since in this way a complete or almost complete emptying of the connection housing 151, in particular of the at least one flow space 153 formed between the connection housing and the transmission housing and the flow channels 113, 114, is made possible and thus, for example, at one Maintenance when opening the rotary lobe pump 100 runs no medium to be pumped.
  • the closure lid 155 a, b, the drain holes 154 a, b close tightly to prevent accidental leakage of medium to be conveyed.
  • inlet and outlet ports 111, 112 on the connection housing 151 and the arrangement of the two rotary pistons 121, 122 in the pump housing 140 there are several advantages: First, it is possible, the rotary pump 100 with the terminal housing 151 fixed in a pipeline system (not shown) via connecting to the inlet and outlet ports 111, 112 connecting piece 115, 116 with connecting flanges 117, 118 to connect. At the same time, however, despite this fixed connection of the terminal housing 151, the wearing parts, in particular the wear plate 160 and the rotary pistons 121, 122, 140 can be replaced easily and quickly by removing the pump housing.
  • the structure of the rotary lobe pump 100 according to the invention has little dead spaces in which solids can settle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Treatment Of Sludge (AREA)

Description

Die Erfindung betrifft eine Drehkolbenpumpe zur Förderung eines Feststoffe enthaltenden fluiden Mediums, umfassend eine Einlassöffnung und eine Auslassöffnung für das zu fördernde Medium, zwei in einem Pumpengehäuse angeordnete Drehkolben mit ineinandergreifenden Drehkolbenflügeln, wobei jeder der beiden Drehkolben drehmomentfest auf jeweils einer Welle befestigt und durch die jeweilige Welle antreibbar ist, und wobei die beiden Wellen durch ein in einem Getriebegehäuse angeordnetes Getriebe miteinander gekoppelt sind.The invention relates to a rotary piston pump for conveying a solids-containing fluid medium, comprising an inlet opening and an outlet opening for the medium to be conveyed, two arranged in a pump housing rotary piston with interlocking rotary lobes, each of the two rotors torque-fixed to one shaft and by the respective Shaft is drivable, and wherein the two shafts are coupled together by a transmission disposed in a transmission housing.

Die Erfindung betrifft weiterhin einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen.The invention further relates to a rotary lobe pump kit for providing rotary lobe pumps.

Drehkolbenpumpen der Eingangs genannten Art sind beispielsweise aus der DE 10 2007 054 544 A1 und der EP 1 624189 B1 der Anmelderin sowie aus der DE 10 2005 017 575 A1 und der WO 2007/026 109 A1 bekannt und dienen dazu, ein fluides Medium zu fördern, das Feststoffe enthält. Beispielsweise können mit einer Drehkolbenpumpe inhomogene Flüssigkeiten, wie etwa Gülle, gefördert werden. Das zu fördernde Medium gelangt über eine am Pumpengehäuse angeordnete Einlaßöffnung in das Innere des Pumpengehäuses, wird dort durch die ineinandergreifenden Drehkolbenflügel zweier angetriebener Drehkolben in Richtung einer am Pumpengehäuse angeordneten Auslassöffnung gefördert und verlässt das Innere des Pumpengehäuses wieder durch die Auslassöffnung.Rotary pumps of the type mentioned are, for example, from DE 10 2007 054 544 A1 and the EP 1 624189 B1 the applicant and from the DE 10 2005 017 575 A1 and the WO 2007/026 109 A1 known and serve to promote a fluid medium containing solids. For example, with a rotary pump inhomogeneous liquids, such as liquid manure can be promoted. The medium to be delivered passes through an inlet opening arranged on the pump housing into the interior of the pump housing, where it is conveyed by the intermeshing rotary lobe wings of two driven rotary lobes in the direction of an outlet opening arranged on the pump housing and leaves the interior of the pump housing again through the outlet opening.

US 6,152,719 offenbart eine Zahnradpumpe mit einer Frontplatte, einem Pumpengehäuse, einer Rückplatte, einem Abdichtungsgehäuse, einer Antriebswellenanordnung, einer Mitlaufwellenanordnung, die jeweils in Stützlagern gelagert sind. In der Frontplatte sind zwei Fluiddurchgangswege definiert, ein Einlassfluiddurchgangsweg und ein Auslassfluiddurchgangsweg. Das Pumpengehäuse ist zwischen der Frontplatte und der Rückplatte angeordnet. Die Rückplatte wirkt als teilweise Stützung für die Antriebswelle und die Mitlaufwelle. US 6,152,719 discloses a gear pump having a front plate, a pump housing, a back plate, a seal housing, a drive shaft assembly, a Mitlaufwellenanordnung, which are each mounted in support bearings. In the front panel, two fluid passageways are defined, an inlet fluid passageway and an outlet fluid passageway. The pump housing is located between the front panel and the rear panel. The back plate acts as a partial support for the drive shaft and the counter shaft.

Aufgrund der Art des zu fördernden Mediums, insbesondere durch die darin enthaltenden Feststoffe, und die Anwendungsgebiete von Drehkolbenpumpen, sind diese einem hohen Verschleiß ausgesetzt. Aufgrund des hohen Verschleißes ist eine regelmäßige Wartung von Drehkolbenpumpen mit einem Austausch von Verschleißteilen erforderlich.Due to the nature of the medium to be pumped, in particular by the solids contained therein, and the applications of rotary lobe pumps, they are exposed to high wear. Due to the high wear, regular maintenance of rotary lobe pumps with replacement of wearing parts is required.

Weitere Probleme bei Drehkolben sind einerseits die bei unzureichenden oder verschleißanfälligen Dichtungen auftretenden Leckageprobleme sowie das Absetzen von Feststoffen in Toträumen.Other problems with rotary lobes are on the one hand occurring in insufficient or wear-prone seals leakage problems and the settling of solids in dead spaces.

Weiterhin besteht bei existierenden Drehkolbenpumpen der Nachteil, dass sie in Einbausituation mit sehr kleinem Bauraum nicht oder nur aufwändig einsetzbar sind und/oder auf verschiedene Anwendungsgebiete und Einsatzbereiche nicht oder nur schwer anpassbar sind.Furthermore, there is the disadvantage in existing rotary lobe pumps that they are not or only consuming laborious in installation situation with very small space and / or are difficult or impossible to adapt to various applications and applications.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Drehkolbenpumpe zur Förderung eines Feststoffe enthaltenden fluiden Mediums sowie einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen bereitzustellen, die einen oder mehrere der genannten Nachteile reduziert oder beseitigt. Es ist weiterhin eine Aufgabe der vorliegenden Erfindung, eine Drehkolbenpumpe zur Förderung eines Feststoffe enthaltenden fluiden Mediums sowie einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen bereitzustellen, die einen geringeren Verschleiß aufweisen und wartungsfreundlicher sind. Es ist weiterhin eine Aufgabe der vorliegenden Erfindung, eine Drehkolbenpumpe zur Förderung eines Feststoffe enthaltenden fluiden Mediums sowie einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen bereitzustellen, die einerseits kompakt, andererseits aber hinsichtlich Einbausituation und Größe bzw. Leistung variabel sind. Es ist weiterhin eine Aufgabe der vorliegenden Erfindung, eine Drehkolbenpumpe zur Förderung eines Feststoffe enthaltenden fluiden Mediums sowie einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen bereitzustellen, die kostengünstig herzustellen sind.It is therefore the object of the present invention to provide a rotary piston pump for conveying a fluid medium containing solids as well as a rotary lobe pump kit for providing rotary lobe pumps, which reduces or eliminates one or more of the mentioned disadvantages. It is a further object of the present invention to provide a rotary lobe pump for conveying a fluid medium containing solids as well as a rotary lobe pump kit for providing rotary lobe pumps which have less wear and are easier to maintain. It is a further object of the present invention to provide a rotary lobe pump for conveying a fluid medium containing solids as well as a rotary lobe pump kit for providing lobe pumps which are compact on the one hand, but variable in terms of installation situation and size or performance. It is a further object of the present invention to provide a rotary lobe pump for conveying a fluid containing solids Medium and provide a rotary lobe pump kit for providing rotary lobe pumps, which are inexpensive to manufacture.

Diese Aufgabe wird gelöst durch eine Drehkolbenpumpe gemäß Anspruch 1.This object is achieved by a rotary piston pump according to claim 1.

Der Erfindung liegt dabei die Erkenntnis zu Grunde, dass eine vorteilhafte Drehkolbenpumpe durch eine Abkehr von der üblichen Konstruktion mit am Pumpengehäuse angeordneten Einlass- und Auslassöffnungen mit möglichst direktem Zugang zu den Drehkolben im Pumpengehäuse realisiert werden kann. Erfindungsgemäß sind die Einlass- und die Auslassöffnung an einem Anschlussgehäuse angeordnet.The invention is based on the finding that an advantageous rotary pump arranged by a departure from the usual design with the pump housing Inlet and outlet ports can be realized with as direct access to the rotary piston in the pump housing. According to the invention, the inlet and outlet openings are arranged on a connection housing.

Im Pumpengehäuse sind die beiden Drehkolben angeordnet, vorzugsweise in einer im Inneren des Pumpengehäuses ausgebildeten Pumpenkammer. Die beiden Drehkolben sind gegenläufig angetrieben, wobei ihre Drehkolbenflügel zur Förderung des Mediums ineinandergreifen.In the pump housing, the two rotary pistons are arranged, preferably in a pump chamber formed in the interior of the pump housing. The two rotary pistons are driven in opposite directions, with their rotary lobes meshing to promote the medium.

Die erfindungsgemäße Anordnung der Einlass- und Auslassöffnung am Anschlussgehäuse und nicht am Pumpengehäuse hat den Vorteil, dass das Anschlussgehäuse über die Einlass- und Auslassöffnungen in ein Rohrleitungssystem fest integriert werden kann und für eine Wartung der Drehkolbenpumpe lediglich das Pumpengehäuse zugänglich sein muss.The arrangement according to the invention of the inlet and outlet opening on the connection housing and not on the pump housing has the advantage that the connection housing can be firmly integrated into a pipeline system via the inlet and outlet openings and only the pump housing must be accessible for maintenance of the rotary pump.

Diese Ausgestaltung der erfindungsgemäßen Drehkolbenpumpe mit einer räumlichen Trennung des Pumpengehäuses mit den Drehkolben von den zum Anschluss der Drehkolbenpumpe an Rohrleitungen dienenden Einlass- und Auslassöffnungen ermöglicht einerseits eine sehr kompakte Bauweise der Drehkolbenpumpe und andererseits eine wartungsfreundlichere Drehkolbenpumpe, da die einem erhöhten Verschleiß ausgesetzten und daher häufiger auszutauschenden Drehkolben so unabhängig vom Anschlussgehäuse und den daran anzuschließenden Rohrleitungen angeordnet und zugänglich sind.This embodiment of the rotary piston pump according to the invention with a spatial separation of the pump housing with the rotary piston of the inlet and outlet ports used for connection of the rotary piston pump on pipes allows on the one hand a very compact design of the rotary lobe pump and on the other hand a maintenance-friendly rotary lobe pump, as exposed to increased wear and therefore more often to be exchanged rotary piston so independent of the connection housing and the pipes to be connected and arranged are accessible.

Bevorzugt ist es, dass das Anschlussgehäuse in einer axialen Richtung, die parallel zu den Wellen verläuft, zu dem Pumpengehäuse versetzt ist. Insbesondere ist bevorzugt, dass die Einlass- und Auslassöffnung in einer axialen Richtung, die parallel zu den Wellen verläuft, von dem Pumpengehäuse, insbesondere zu einer im Inneren des Pumpengehäuses ausgebildeten Pumpenkammer, beabstandet sind oder daran angrenzen. Auf diese Weise kann sichergestellt werden, dass die an die Einlass- und Auslassöffnung anschließenden Rohrleitungen vom Pumpengehäuse beabstandet sind und das Pumpengehäuse gut zugänglich ist.It is preferable that the terminal housing is offset from the pump housing in an axial direction parallel to the shafts. In particular, it is preferred that the inlet and outlet openings in an axial direction, which is parallel to the waves, from the pump housing, in particular to a pump chamber formed in the interior of the pump housing, are spaced or adjacent thereto. In this way it can be ensured that the adjoining the inlet and outlet ports are spaced from the pump housing and the pump housing is easily accessible.

In der Ausführungsform der Efindung ist vorgesehen, dass das Getriebegehäuse und das Anschlussgehäuse eine bauliche Einheit - die Getriebeeinheit - bilden. Das Getriebegehäuse und das Anschlussgehäuse können jeweils aus mehreren Bauteilen bestehen oder jeweils einstückig ausgebildet sein. Besonders bevorzugt ist es, dass die Getriebeeinheit insgesamt einstückig ausgebildet ist, d.h. das Getriebegehäuse und das Anschlussgehäuse als zusammenhängendes, einstückiges Bauteil ausgebildet sind.In the embodiment of the invention, it is provided that the transmission housing and the connection housing form a structural unit-the transmission unit. The gear housing and the connection housing can each consist of several components or each formed in one piece. It is particularly preferred that the gear unit is formed as a whole in one piece, i. the transmission housing and the connection housing are formed as a continuous, one-piece component.

Besonders bevorzugt ist weiterhin, dass das Getriebegehäuse zumindest teilweise innerhalb des Anschlussgehäuses angeordnet ist und weiterhin vorzugsweise zwischen dem Anschlussgehäuse und dem Getriebegehäuse mindestens ein Strömungsraum ausgebildet ist, der von dem zu fördernden Medium durchströmbar ist. Der mindestens eine Strömungsraum steht vorzugsweise mit der Einlass- bzw. Auslassöffnung und dem Inneren des Pumpengehäuses in Fluidverbindung, so dass durch die Einlassöffnung einströmendes Medium durch den Strömungsraum zu einer im Inneren des Pumpengehäuses angeordneten und die Drehkolben umfassenden Pumpenkammer und von dort über den gleichen oder einen weiteren Strömungsraum zur Auslassöffnung gelangen kann. Diese Fortbildungsform ist einerseits sehr kompakt und hat weiterhin den Vorteil, dass das Getriebegehäuse auf diese Weise durch das zu fördernde Medium, das im Strömungsraum das Getriebegehäuse zumindest abschnittsweise umströmt, gekühlt wird und somit eine höhere Leistungsdichte erzielt werden kann.It is furthermore particularly preferred that the transmission housing is arranged at least partially within the connection housing and further preferably at least one flow space is formed between the connection housing and the transmission housing, through which medium can be flowed through. The at least one flow space is preferably in fluid communication with the inlet or outlet opening and the interior of the pump housing, so that flowing through the inlet opening medium through the flow space to a arranged in the interior of the pump housing and the rotary piston pump chamber and from there via the same or can reach a further flow space to the outlet opening. This training form is on the one hand very compact and has the further advantage that the gearbox is cooled in this way by the medium to be pumped, which at least partially flows around the gear housing in the flow space, and thus a higher power density can be achieved.

In einer bevorzugten Fortbildung der erfindungsgemäßen Drehkolbenpumpe ist vorgesehen, dass das Pumpengehäuse und die Getriebeeinheit lösbar miteinander verbunden sind.In a preferred embodiment of the rotary piston pump according to the invention it is provided that the pump housing and the gear unit are releasably connected to each other.

Das Pumpengehäuse kann an dem Anschlussgehäuse, dem Getriebegehäuse oder sowohl am Anschlussgehäuse als auch am Getriebegehäuse lösbar befestigt sein. Auf diese Weise kann das Pumpengehäuse der Drehkolbenpumpe abgenommen werden, um beispielsweise die Drehkolben zu warten oder auszutauschen. Dadurch, dass erfindungsgemäß die Einlass- und Ausfassöffnung nicht am Pumpengehäuse angeordnet sind, müssen auch an die Einlass- und Auslassöffnung angeschlossene Zu- und Ablaufleitungen bei einer Wartung der Drehkolbenpumpe nicht demontiert werden, sondern können auch bei abgenommenem Pumpengehäuse mit dem Anschlussgehäuse verbunden bleiben. Durch Möglichkeit, das Pumpengehäuse vollständig von der Getriebeeinheit abnehmen zu können und damit die Drehkolben komplett freizulegen, wird die Zugänglichkeit der Drehkolben und somit deren Wartung und ggf. Montage/Demontage erheblich erleichtert.The pump housing may be releasably secured to the terminal housing, the transmission housing or both the connection housing and the transmission housing. In this way, the pump housing of the rotary pump can be removed to wait for example, the rotary piston or replace. Due to the fact that, according to the invention, the inlet and outlet openings are not arranged on the pump housing, inlet and outlet lines connected to the inlet and outlet openings do not have to be dismantled during maintenance of the rotary pump, but can remain connected to the connection housing even when the pump housing is removed. By being able to completely remove the pump housing from the gear unit and thus fully expose the rotary pistons, the accessibility the rotary piston and thus their maintenance and possibly assembly / disassembly considerably easier.

Die Erfindung kann dadurch fortgebildet werden, dass die beiden Drehkolben lösbar an der jeweiligen Welle befestigt sind.The invention can be further developed in that the two rotary pistons are detachably fastened to the respective shaft.

Diese Fortbildungsform hat den Vorteil, dass bei einer Wartung mit einem Austausch der Drehkolben nicht auch die Wellen demontiert werden müssen, sondern - bei abgenommenem Pumpengehäuse - lediglich die Drehkolben von der Welle gelöst werden müssen und ausgetauscht werden können.This further development form has the advantage that during maintenance with replacement of the rotary piston, the shafts do not have to be disassembled, but - with the pump housing removed - only the rotary pistons of the shaft have to be loosened and replaced.

Die Erfindung kann fortgebildet werden durch eine zwischen dem Pumpengehäuse und der Getriebeeinheit angeordnete Verschleißplatte, wobei die Verschleißplatte vorzugsweise lösbar an der Getriebeeinheit befestigt ist.The invention can be further developed by a wear plate arranged between the pump housing and the gear unit, wherein the wear plate is preferably releasably attached to the gear unit.

Diese bevorzugte Fortbildungsform der erfindungsgemäßen Drehkolbenpumpe hat den Vorteil, dass die Wartungsfreundlichkeit der Drehkolbenpumpe weiterhin dadurch verbessert wird, dass die Verschleißplatte an der Verbindungsstelle von Getriebeeinheit und Pumpengehäuse angeordnet und daher sehr einfach zugänglich ist und schnell ausgetauscht werden kann. Es ist insbesondere bevorzugt, dass die Verschleißplatte an der Getriebeeinheit lösbar befestigt ist, damit beispielsweise bei Abnahme des Pumpengehäuses von der Getriebeeinheit zum Austausch der Drehkolben die Verschleißplatte zwar einerseits leicht zugänglich ist, anderseits aber stabil an der Getriebeeinheit befestigt ist, falls ein Austausch bzw. eine Demontage der Verschleißplatte erst zu einem anderen Zeitpunkt erfolgen soll. Die Verschleißplatte kann an dem Anschlussgehäuse, dem Getriebegehäuse oder sowohl am Anschlussgehäuse als auch am Getriebegehäuse lösbar befestigt sein.This preferred development of the rotary lobe pump according to the invention has the advantage that the ease of maintenance of the rotary lobe pump is further improved in that the wear plate is arranged at the junction of gear unit and pump housing and therefore very easily accessible and can be quickly replaced. It is particularly preferred that the wear plate is releasably secured to the gear unit, so that for example when removing the pump housing from the gear unit to replace the rotary piston, the wear plate on the one hand easily accessible, but on the other hand is stably fixed to the gear unit, if an exchange or disassembly of the wear plate should take place at another time. The wear plate may be releasably secured to the terminal housing, the transmission housing, or both the terminal housing and the transmission housing.

Insbesondere ist es bevorzugt, dass die Drehkolbenpumpe nur eine einzige Verschleißplatte aufweist.In particular, it is preferred that the rotary piston pump has only a single wear plate.

Der Aufbau der erfindungsgemäßen Drehkolbenpumpe und ihrer Fortbildungen ermöglicht es, dass im Gegensatz zu aus dem Stand der Technik bekannten Drehkolbenpumpen mit zwei Verschleißplatten nur eine Verschleißplatte erforderlich ist. Dies hat den Vorteil, dass einerseits weniger Zeit für eine Wartung benötigt wird, da weniger Verschleißteile auszutauschen sind. Andererseits sinken bei einer kleineren Zahl von Verschleißteilen auch die instandhaltungskosten.The construction of the rotary lobe pump according to the invention and its further developments makes it possible, in contrast to known from the prior art rotary lobe pumps with two wear plates, only one wear plate is required. This has the advantage that, on the one hand, less time is required for maintenance, since fewer wear parts are to be exchanged. On the other hand, with a smaller number of wearing parts, the maintenance costs also decrease.

Die Erfindung kann dadurch fortgebildet werden, dass die beiden Wellen der Getriebeeinheit drehbar gelagert sind und jeweils ein Abschnitt der Wellen in eine im Inneren des Pumpengehäuses ausgebildete Pumpenkammer hineinragt. Insbesondere ist es bevorzugt, dass das Pumpengehäuse keine Lagerung für die beiden Wellen aufweist.The invention can be further developed in that the two shafts of the gear unit are rotatably mounted and in each case a portion of the shafts protrudes into a pump chamber formed in the interior of the pump housing. In particular, it is preferred that the pump housing has no storage for the two shafts.

In dieser bevorzugten Fortbildungsform befinden sich die Lager für die beiden Antriebswellen der Drehkolben in der Getriebeeinheit, vorzugsweise im Getriebegehäuse. Die Wellen ragen dabei derart in die Pumpenkammer im Pumpengehäuse hinein, das die beiden Drehkolben auf den Wellen drehmomentfest befestigt werden und entsprechend durch die jeweilige Welle angetrieben werden können. Insbesondere ist es bevorzugt, dass die Wellen nicht noch zusätzlich durch Lager im Pumpengehäuse gelagert sind.In this preferred further development form, the bearings for the two drive shafts of the rotary pistons are located in the gear unit, preferably in the gear housing. The waves protrude in such a way into the pump chamber in the pump housing into which the two rotary pistons are fixed torque-resistant on the waves and can be driven by the respective shaft accordingly. In particular, it is preferred that the shafts are not additionally supported by bearings in the pump housing.

Diese Fortbildungsform hat den Vorteil, dass bei der Abnahme des Pumpengehäuses von der Getriebeeinheit und weiterhin auch bei Abnahme der Drehkolben von den Wellen die Wellen auch während der Wartung ausschließlich und vollständig in der Getriebeeinheit gelagert sind und keine Montage/Demontage von Wellenlagern im Pumpengehäuse erforderlich ist.This further development form has the advantage that during the removal of the pump housing from the gear unit and continue even when removing the rotary piston from the waves, the waves are also stored during maintenance exclusively and completely in the gear unit and no assembly / disassembly of shaft bearings in the pump housing is required ,

Ein weiterer Vorteil dieser Fortbildungsform liegt darin, das auf diese Weise das Pumpengehäuse besonders einfach ausgebildet sein kann und daher auch schneller und kostengünstiger hergestellt werden kann als Gehäuseteile, die Wellenlager aufweisen.Another advantage of this training is that in this way the pump housing can be particularly simple and therefore can be made faster and cheaper than housing parts having shaft bearings.

Eine besonders bevorzugte Fortbildungsform sieht daher auch vor, dass das Pumpengehäuse einstückig ausgebildet ist.A particularly preferred further development form therefore also provides that the pump housing is formed in one piece.

Eine einstückige Ausbildung des Pumpengehäuses gegenüber einer im Stand der Technik bekannten Ausbildung in zwei Halbschalen hat den Vorteil, dass das Pumpengehäuse kostengünstiger hergestellt werden kann, einfacher und schneller zu montieren und demontieren ist als ein zweiteiliges Pumpengehäuse und eine zusätzliche Trennstelle, die abgedichtet werden muss und daher immer ein Leckagerisiko darstellt, vermieden werden kann.A one-piece design of the pump housing over a known in the prior art training in two half-shells has the advantage that the pump housing can be produced cheaper, easier and faster to assemble and disassemble is as a two-part pump housing and an additional separation point, which must be sealed and therefore always a risk of leakage, can be avoided.

Die Erfindung kann dadurch fortgebildet werden, dass die Einlassöffnung über einen ersten Strömungskanal und die Auslassöffnung über einen zweiten Strömungskanal mit einer im Inneren des Pumpengehäuses ausgebildeten Pumpenkammer verbunden sind, wobei zumindest jeweils ein Teil des ersten und zweiten Strömungskanals in einer im Wesentlichen axialen Richtung verläuft, die parallel zu den Wellen angeordnet ist.The invention can be developed by connecting the inlet opening via a first flow channel and the outlet opening via a second flow channel to a pump chamber formed in the interior of the pump housing, at least a part of the first and second flow channel extending in a substantially axial direction, which is arranged parallel to the waves.

Durch die erfindungsgemäße Anordnung der Einlass- und Auslassöffnung am Anschlussgehäuse ist es erforderlich, Strömungskanäle vorzusehen, durch die das zu fördernde Medium von der Einlassöffnung in die im Inneren des Pumpengehäuses ausgebildete Pumpenkammer und von der Pumpenkammer zur Auslassöffnung gelangen kann. In der bevorzugten Fortbildungsform sind die Strömungskanäle zumindest abschnittsweise axial, das heißt parallel zur Drehachse der Wellen, angeordnet. Die Strömungskanäle können innerhalb oder als Teil eines oder mehrerer Strömungsräume zwischen Anschlussgehäuse und Getriebegehäuse ausgebildet sein. Durch diesen teilweise axialen Zu- und Abstrom des Mediums zum Pumpengehäuse wird der axiale Abstand der am Anschlussgehäuse angeordneten Einlass- und Auslassöffnungen zu der die Drehkolben umfassenden und im Inneren des Pumpengehäuses ausgebildeten Pumpenkammer überwunden.The inventive arrangement of the inlet and outlet ports on the connection housing, it is necessary to provide flow channels through which the medium to be delivered can pass from the inlet opening into the pump chamber formed in the interior of the pump housing and from the pump chamber to the outlet. In the preferred embodiment, the flow channels are arranged at least in sections axially, that is to say parallel to the axis of rotation of the shafts. The flow channels may be formed within or as part of one or more flow spaces between the connection housing and the transmission housing. By this partial axial inflow and outflow of the medium to the pump housing, the axial distance of the connection housing arranged on the inlet and outlet openings is overcome to the rotary piston comprehensive and formed inside the pump housing pump chamber.

Die Erfindung kann dadurch fortgebildet werden, dass die Einlassöffnung und die Auslassöffnung im Betriebszustand der Drehkolbenpumpe in der oberen Hälfte des Anschlussgehäuses angeordnet sind.The invention can be developed by arranging the inlet opening and the outlet opening in the operating state of the rotary piston pump in the upper half of the connection housing.

Diese Fortbildungsform hat den Vorteil, dass stets eine sehr gute Flüssigkeitsvorlage erreicht wird und so ein besonders effizienter Betrieb der Drehkolbenpumpe mit hoher Leistungsdichte ermöglicht wird.This further development form has the advantage that always a very good liquid reservoir is achieved and thus a particularly efficient operation of the rotary lobe pump with high power density is made possible.

Dabei ist es insbesondere bevorzugt, dass die Einlassöffnung und die Auslassöffnung im Betriebszustand der Drehkolbenpumpe derart am Anschlussgehäuse angeordnet sind, dass eine erste Achse, die rechtwinklig zu einer die Einlassöffnung umfassenden Ebene angeordnet ist, und eine zweite Achse, die rechtwinklig zu einer die Auslassöffnung umfassenden Ebene angeordnet ist, jeweils in einem Winkel von 45° gegenüber einer Vertikalen geneigt sind.In this case, it is particularly preferred that the inlet opening and the outlet opening are arranged in the operating state of the rotary piston pump on the connection housing such that a first axis which is arranged at right angles to a plane comprising the inlet opening, and a second axis which is perpendicular to an outlet opening Plane is arranged, each inclined at an angle of 45 ° to a vertical.

Diese Fortbildungsform hat nicht nur den Vorteil, dass eine sehr gute Flüssigkeitsvorlage und eine hohe Leistungsdichte erzielt werden, sondern auch, dass an die Einlass- und Auslassöffnung anzuschließende Einlass- und Auslassstutzen variabel an verschiedene Einbausituationen angepasst werden können.This form of training has not only the advantage that a very good liquid reservoir and a high power density can be achieved, but also that of the inlet and Outlet opening to be connected inlet and outlet can be variably adapted to different installation situations.

Eine besonders bevorzugte Fortbildungsform ist dabei gekennzeichnet durch einen an die Einlassöffnung anschließenden Einlassstutzen mit einem Einlassflansch und einen an die Auslassöffnung anschließenden Auslassstutzen mit einem Auslassflansch, wobei der Einlassstutzen und der Auslassstutzen derart ausgebildet und an dem Anschlussgehäuse befestigbar sind, dass in einer ersten Befestigungsposition der Einlass- und/oder der Auslassflansch im Betriebszustand der Drehkolbenpumpe waagerecht angeordnet ist bzw. sind und/oder in einer zweiten Befestigungsposition der Einlass- und/oder der Auslassflansch im Betriebszustand der Drehkolbenpumpe senkrecht angeordnet ist bzw. sind.A particularly preferred further development form is characterized by an inlet connection adjoining the inlet opening with an inlet flange and an outlet connection with an outlet flange adjoining the outlet opening, wherein the inlet connection and the outlet connection are designed and fastened to the connection housing in such a way that in a first fastening position the inlet - And / or the outlet in the operating state of the rotary pump is arranged horizontally or are and / or in a second mounting position of the inlet and / or the outlet in the operating state of the rotary pump is arranged vertically or are.

In dieser Fortbildungsform sind Einlass- und Auslassstutzen vorgesehen, die an der Einlass- bzw. Auslassöffnung am Anschlussgehäuse angeordnet und befestigt werden können und weiterhin jeweils einen Einlass- bzw. Auslassflansch aufweisen zum Anschluss des Einlass- bzw. Auslassstutzens an eine Rohrleitung. Bevorzugt ist es nun, dass der Einlass- und der Auslassstutzen derart ausgebildet sind, das sie auf zumindest zwei unterschiedliche Arten an der Einlass- bzw. Auslassöffnung am Anschlussgehäuse angeordnet werden können: Der jeweilige Stutzen kann so angeordnet sein, dass der zugehörige Flansch im Betriebszustand der Drehkolbenpumpen waagerecht oder senkrecht angeordnet ist. Daraus ergeben sich die folgenden bevorzugten Kombinationen: Anordnung von Einlass- und Auslassstutzen derart, dass Einlass- und Auslassflansch im Betriebszustand der Drehkolbenpumpe waagerecht angeordnet sind, Anordnung von Einlass- und Auslassstutzen derart, dass Einlass- und Auslassflansch im Betriebszustand der Drehkolbenpumpe senkrecht angeordnet sind, oder Anordnung von Einlass- und Auslassstutzen derart, dass einer der beiden Stutzen im Betriebszustand der Drehkolbenpumpe waagerecht angeordnet ist und der andere der beiden Stutzen im Betriebszustand der Drehkolbenpumpe senkrecht angeordnet ist. Auf diese Weise ist es bei einer kompakten Bauweise der Drehkolbenpumpe möglich, die Drehkolbenpumpe in einer Vielzahl verschiedener Einbausituationen einzusetzen.In this further development form inlet and outlet ports are provided, which can be arranged and fastened to the inlet or outlet opening on the connection housing and furthermore each have an inlet or outlet flange for connecting the inlet or outlet connection to a pipeline. It is now preferred that the inlet and the outlet are designed such that they can be arranged in at least two different ways at the inlet or outlet port on the connection housing: The respective nozzle can be arranged so that the associated flange in the operating state the rotary lobe pump is arranged horizontally or vertically. This results in the following preferred combinations: Arrangement of inlet and outlet ports such that inlet and outlet are arranged horizontally in the operating state of the rotary pump, arrangement of inlet and outlet ports such that inlet and outlet are arranged vertically in the operating state of the rotary pump, or arrangement of inlet and outlet ports such that one of the two nozzles is arranged horizontally in the operating state of the rotary piston pump and the other of the two nozzles is arranged vertically in the operating state of the rotary piston pump. In this way it is possible in a compact design of the rotary lobe pump to use the rotary lobe pump in a variety of different installation situations.

Die Erfindung kann dadurch fortgebildet werden, dass das Anschlussgehäuse mindestens eine lösbar verschließbare Ablassbohrung aufweist, durch die das zu fördernde Medium abgelassen werden kann.The invention can be further developed in that the connection housing has at least one releasably closable drainage bore, through which the medium to be conveyed can be discharged.

Durch diese Fortbildungsform wird eine Wartung der Drehkolbenpumpe erleichtert, da auf diese Weise eine vollständige oder nahezu vollständige Entleerung des Anschlussgehäuses, insbesondere mindestens eines zwischen dem Anschlussgehäuse und dem Getriebegehäuse ausgebildeten Strömungsraums, ermöglicht wird und so beispielsweise bei einer Wartung beim Öffnen der Drehkolbenpumpe kein zu förderndes Medium nachläuft. Dazu wird die Ablassbohrung vor einer Wartung geöffnet. Im Betriebszustand der Drehkolbenpumpe ist die mindestens eine Ablassbohrung vorzugsweise geschlossen, um einen ungewollten Austritt des zu fördernden Mediums zu verhindern.By this training form a maintenance of the rotary lobe pump is facilitated, since in this way a complete or nearly complete emptying of the connection housing, in particular at least one formed between the connection housing and the transmission housing flow space is enabled and so, for example, during a maintenance when opening the rotary pump no promotional Medium runs after. For this purpose, the drain hole is opened before maintenance. In the operating state of the rotary piston pump, the at least one drain hole is preferably closed in order to prevent an unwanted escape of the medium to be conveyed.

Ein weiterer Aspekt der Erfindung betrifft einen Drehkolbenpumpenbausatz zur Bereitstellung von Drehkolbenpumpen unterschiedlicher Größe und/oder Leistung, umfassend eine erfindungsgemäße Drehkolbenpumpen wie zuvor beschrieben und weiterhin gekennzeichnet durch mindestens zwei weitere Drehkolben anderer Größe mit ineinandergreifenden Drehkolbenflügeln, wobei die beiden Wellen und die mindestens zwei weiteren Drehkolben anderer Größe derart ausgebildet sind, dass die mindestens zwei weiteren Drehkolben anderer Größe lösbar auf der jeweiligen der beiden Wellen befestigbar sind.Another aspect of the invention relates to a rotary lobe pump kit for providing rotary lobe pumps of different size and / or power, comprising a rotary lobe pump according to the invention as described above and further characterized by at least two other lobes of other size with interlocking rotary lobes, wherein the two shafts and the at least two further rotary lobes another size are formed such that the at least two further rotary pistons of other size are detachably fastened on the respective one of the two shafts.

Gemäß dieses Aspekts können eine erfindungsgemäße Drehkolbenpumpe und ihre Fortbildungen einen Teil eines Drehkolbenpumpenbausatzes darstellen, der es ermöglicht, eine erfindungsgemäße Drehkolbenpumpe durch den Austausch der Drehkolben zu einer erfindungsgemäßen Drehkolbenpumpe mit einer anderen Größe bzw. einer anderen Leistung umzubauen. Dadurch weist der Drehkolbenpumpenbausatz zwei Paar Drehkolben unterschiedlicher Größe, insbesondere unterschiedlicher Länge, auf, so dass entweder das erste Paar von zwei Drehkolben auf den Wellen befestigt wird oder das zweite Paar von zwei Drehkolben. Ein erfindungsgemäßer Drehkolbenpumpensatz kann auch mehr als zwei Paar Drehkolben unterschiedlicher Größe aufweisen. Insbesondere wenn das Pumpengehäuse lösbar an der Getriebeeinheit befestigt ist, kann die Drehkolbenpumpe durch einen Austausch der Drehkolben sehr schnell und einfach hinsichtlich Größe bzw. Leistung verändert werden.According to this aspect, a rotary lobe pump according to the invention and its further developments can form part of a rotary lobe pump kit, which makes it possible to convert a rotary lobe pump according to the invention to a rotary lobe pump according to the invention having a different size or a different power by replacing the rotary lobes. As a result, the rotary lobe pump kit has two pairs of rotary pistons of different sizes, in particular of different lengths, so that either the first pair of two rotary lobes is fastened to the shafts or the second pair of two rotary lobes. A rotary piston pump set according to the invention can also have more than two pairs of rotary pistons of different sizes. In particular, when the pump housing is releasably secured to the gear unit, the rotary pump can be changed very quickly and easily in terms of size or performance by replacing the rotary piston.

Der erfindungsgemäße Drehkolbenpumpenbausatz kann dadurch fortgebildet werden, dass mindestens ein weiteres Pumpengehäuse anderer Größe vorgesehen ist, wobei die Getriebeeinheit und das mindestens eine weitere Pumpengehäuse anderer Größe derart ausgebildet sind, dass das mindestens eine weitere Pumpengehäuse anderer Größe an der Getriebeeinheit lösbar befestigbar ist.The rotary lobe pump kit according to the invention can be developed by providing at least one further pump housing of a different size, wherein the gear unit and the at least one further pump housing of a different size are designed such that the at least one further pump housing of a different size can be detachably fastened to the gear unit.

Diese Fortbildungsform hat den Vorteil, dass eine deutlich größere Bandbreite an Größe bzw. Leistung der mit dem Drehkolbenpumpenbausatz bereitzustellenden Drehkolbenpumpen realisiert werden kann, da für größere, insbesondere längere, Drehkolben auch ein größeres, insbesondere längeres, Pumpengehäuse mit einer entsprechend größeren Pumpenkammer zur Aufnahme der Drehkolben bereitgestellt werden kann. Auf diese Weise kann - ohne die Getriebeeinheit mit Anschlussgehäuse und Getriebegehäuse von einem Leitungssystem demontieren zu müssen - lediglich durch Austausch der Drehkolben und gegebenenfalls des Pumpengehäuses Größe bzw. Leistung der Drehkolbenpumpe schnell und einfach variiert werden.This further development form has the advantage that a significantly larger bandwidth can be realized in terms of size and power of the rotary lobe pump set to be provided because larger, especially longer, rotary piston and a larger, especially longer, pump housing with a correspondingly larger pump chamber for receiving the Rotary piston can be provided. In this way - without having to dismantle the gear unit with connection housing and gear housing from a conduit system - only by replacing the rotary piston and possibly the pump housing size or power of the rotary lobe pump can be varied quickly and easily.

Eine bevorzugte Ausführungsform der Erfindung wird beispielhaft anhand der beiliegenden Figuren beschrieben. Es zeigen:

Figur 1:
Eine dreidimensionale Darstellung einer ersten Ausführungsform einer erfindungsgemäßen Drehkolbenpumpe,
Figur 2:
eine Vorderansicht der in Fig. 1 gezeigten Drehkolbenpumpe,
Figur 3:
Eine dreidimensionale Darstellung einer weiteren Ausführungsform einer erfindungsgemäßen Drehkolbenpumpe in einer Variante mit Ablassbohrungen,
Figur 4:
eine Vorderansicht der in Fig. 3 gezeigten Drehkolbenpumpe,
Figur 5:
eine teilweise geschnittene dreidimensionale Ansicht der in Fig. 1 gezeigten Drehkolbenpumpe,
Figur 6:
ein Längsschnitt durch die in Figur 1 dargestellte Drehkolbenpumpe,
Figur 7:
den in Fig. 6 gezeigten Längsschnitt mit abgenommenen Pumpengehäuse,
Figur 8:
eine Rückansicht einer weiteren Ausführungsform einer erfindungsgemäßen Drehkolbenpumpe ohne Einlass- und Auslassstutzen in einer Variante mit Ablassbohrungen,
Figur 9:
eine Vorderansicht einer weiteren Ausführungsform einer erfindungsgemäßen Drehkolbenpumpe ohne Einlass- und Auslassstutzen,
Figur 10:
eine Seitenansicht der in Fig. 9 gezeigten Drehkolbenpumpe,
Figur 11:
eine Rückansicht der in Fig. 9 gezeigten Drehkolbenpumpe,
Figur 12:
eine teilweise geschnittene Seitenansicht der in Fig. 9 gezeigten Drehkolbenpumpe,
Figur 13:
eine Draufsicht auf die in Fig. 9 gezeigte Drehkolbenpumpe,
Figur 14:
eine erste dreidimensionale Ansicht der in Fig. 9 gezeigten Drehkolbenpumpe,
Figur 15:
eine zweite dreidimensionale Ansicht der in Fig. 9 gezeigten Drehkolbenpumpe und
Figur 16:
die in Fig. 15 gezeigte dreidimensionale Ansicht mit teilweise teilweise geschnittenem Pumpengehäuse.
A preferred embodiment of the invention will be described by way of example with reference to the accompanying drawings. Show it:
FIG. 1:
A three-dimensional representation of a first embodiment of a rotary piston pump according to the invention,
FIG. 2:
a front view of in Fig. 1 shown rotary lobe pump,
FIG. 3:
A three-dimensional representation of another embodiment of a rotary piston pump according to the invention in a variant with drain holes,
FIG. 4:
a front view of in Fig. 3 shown rotary lobe pump,
FIG. 5:
a partially sectioned three-dimensional view of the in Fig. 1 shown rotary lobe pump,
FIG. 6:
a longitudinal section through the in FIG. 1 illustrated rotary piston pump,
FIG. 7:
the in Fig. 6 shown longitudinal section with removed pump housing,
FIG. 8:
a rear view of another embodiment of a rotary piston pump according to the invention without inlet and outlet ports in a variant with drain holes,
FIG. 9:
a front view of another embodiment of a rotary piston pump according to the invention without inlet and outlet nozzle,
FIG. 10:
a side view of in Fig. 9 shown rotary lobe pump,
FIG. 11:
a rear view of the in Fig. 9 shown rotary lobe pump,
FIG. 12:
a partially sectioned side view of the Fig. 9 shown rotary lobe pump,
FIG. 13:
a top view of the in Fig. 9 shown rotary lobe pump,
FIG. 14:
a first three-dimensional view of the in Fig. 9 shown rotary lobe pump,
FIG. 15:
a second three-dimensional view of the in Fig. 9 shown rotary lobe pump and
FIG. 16:
in the Fig. 15 shown three-dimensional view with partially partially cut pump housing.

Alle Figuren sind einmal mit Bezugszeichen (jeweilige Figurennummer mit nachgestelltem "a") und einmal - zur besseren Darstellbarkeit - ohne Bezugszeichen (jeweilige Figurennummer mit nachgestelltem "b") abgebildet.All figures are once with reference numerals (respective figure number followed by "a") and once - for better representability - without reference numerals (respective figure number followed by "b") mapped.

Die erfindungsgemäße Drehkolbenpumpe 100 weist eine Einlassöffnung 111 und eine Auslassöffnung 112 für das zu fördernde Medium auf.The rotary piston pump 100 according to the invention has an inlet opening 111 and an outlet opening 112 for the medium to be conveyed.

An der Einlassöffnung 111 kann, wie in den Figuren 1 bis 7 zu erkennen ist, ein Einlassstutzen 115 mit einem Einlassflansch 117 befestigt werden, über den die Drehkolbenpumpe 100 im Betriebszustand an eine Rohrleitung (nicht dargestellt) angeschlossen werden kann. An der Auslassöffnung 112 kann, wie ebenfalls in den Figuren 1 bis 7 zu erkennen ist, ein Auslassstutzen 116 mit einem Auslassflansch 118 angeordnet werden, über den die Drehkolbenpumpe 100 im Betriebszustand an einer Rohrleitung (nicht dargestellt) angeschlossen werden kann.At the inlet opening 111 can, as in the FIGS. 1 to 7 it can be seen, an inlet nozzle 115 are attached to an inlet flange 117, via which the rotary piston pump 100 in the operating state to a pipeline (not shown) can be connected. At the outlet port 112 may, as also in the FIGS. 1 to 7 it can be seen, an outlet port 116 are arranged with a Auslassflansch 118, via which the rotary piston pump 100 in the operating state on a pipe (not shown) can be connected.

Wie in den in den Figuren 8 bis 16 dargestellten Ausführungsformen ohne Einlass- und Auslassstutzen zu erkennen ist, ist die Anordnung dieser Stutzen optional.As in the in the FIGS. 8 to 16 illustrated embodiments can be seen without inlet and outlet ports, the arrangement of these nozzles is optional.

Die Figuren 1 und 2 zeigen eine Ausführungsform einer erfindungsgemäßen Drehkolbenpumpe 100, bei der die Stutzen 115, 116 so angeordnet sind, dass die jeweiligen Flansche 117,118 der Stutzen 115, 116 im Einbauzustand der Drehkolbenpumpe im wesentlichen senkrecht angeordnet sind, so dass die an diese Flansche 117, 118 anzuschließende Rohrleitung (nicht dargestellt) im wesentlichen waagerecht verläuft, sogenannter 90°-Anschluss.The FIGS. 1 and 2 show an embodiment of a rotary piston pump 100 according to the invention, in which the nozzles 115, 116 are arranged so that the respective flanges 117,118 of the nozzles 115, 116 are arranged substantially vertically in the installed state of the rotary piston pump, so that to be connected to these flanges 117, 118 pipeline (not shown) extends substantially horizontally, so-called 90 ° connection.

In der in den Figuren 3 und 4 dargestellten Ausführungsform der Drehkolbenpumpe 100 sind die beiden Stutzen 115, 116 als Schwanenhals-Anschluss ausgebildet, d. h. die beiden Flansche 117, 118 sind im Einbauzustand der Drehkolbenpumpe im wesentlichen waagerecht angeordnet, so dass an die Flansche 117, 118 anzuschließende Rohrleitungen im Einbauzustand der Drehkolben-pumpe im wesentlichen senkrecht verlaufen.In the in the Figures 3 and 4 illustrated embodiment of the rotary piston pump 100, the two nozzles 115, 116 formed as a gooseneck connection, ie, the two flanges 117, 118 are arranged horizontally in the installed state of the rotary pump, so that to the flanges 117, 118 to be connected pipes in the installed state of the rotary piston Pump run substantially vertically.

Weiterhin ist es auch möglich, nur einen der beiden Stutzen mit senkrechtem Flansch zu montieren und den jeweils anderen Stutzen mit im wesentlichen waagerechten Flansch zu montieren. Auf diese Weise ergibt sich eine weitere Flexibilität der erfindungsgemäßen Drehkolbenpumpe 100 zur Anpassung an verschiedene Einbausituationen.Furthermore, it is also possible to mount only one of the two nozzles with a vertical flange and to mount the respective other nozzle with a substantially horizontal flange. In this way, there is a further flexibility of the rotary lobe pump 100 according to the invention for adaptation to different installation situations.

Wie aus der Zusammenschau der Figuren zu erkennen ist, kann durch eine gedrehte Montage der Anschlussstutzen 115, 116 die erfindungsgemäße Drehkolben-pumpe 100 sehr leicht von einem Schwanenhals- in einem 90°-Anschluss und umgekehrt verwandelt werden oder die Drehkolbenpumpe 100 ganz ohne Stutzen oder nur mit einem Stutzen verwendet werden. Dies hat den Vorteil, dass die erfindungsgemäße Drehkolbenpumpe 100 einerseits sehr kompakt ist und andererseits einfach und schnell an verschiedene Einbausituationen anpassbar ist.As can be seen from the synopsis of the figures, by a rotated assembly of the connecting pieces 115, 116, the rotary piston pump 100 of the invention can be very easily transformed by a gooseneck in a 90 ° connection and vice versa or the rotary pump 100 without any nozzle or can only be used with a nozzle. This has the advantage that the rotary piston pump 100 according to the invention on the one hand is very compact and on the other hand is easily and quickly adaptable to different installation situations.

Weitere wesentliche Eigenschaften der erfindungsgemäßen Drehkolbenpumpe 100 sind unabhängig von der Montageart der Einlass- und Auslassstutzen 115, 116. Die im Folgenden beschriebenen Merkmale, Funktionsweisen und Vorteile gelten deshalb gleichermaßen für die in den Figuren dargestellten verschiedenen Ausführungsformen einer erfindungsgemäßen Drehkolbenpumpe 100. Gleiche oder im wesentlichen funktionsgleiche Elemente sind daher mit den gleichen Bezugszeichen versehen.Further essential features of the rotary piston pump 100 according to the invention are independent of the mounting of the inlet and outlet ports 115, 116. The features, functions and advantages described below therefore apply equally to the illustrated in the figures, various embodiments of a rotary piston pump 100. Gleiche or substantially functionally identical elements are therefore provided with the same reference numerals.

Die Einlass- und die Auslassöffnung 111, 12 sind an einem Anschlussgehäuse 151 der Drehkolbenpumpe 100 angeordnet. Die Drehkolbenpumpe 100 weist weiterhin ein Pumpengehäuse 140 auf.The inlet and the outlet openings 111, 12 are arranged on a connection housing 151 of the rotary piston pump 100. The rotary piston pump 100 further has a pump housing 140.

Innerhalb des Pumpengehäuses 140 ist eine Pumpenkammer 141 ausgebildet, in der zwei Drehkolben 121, 122 angeordnet sind, deren Drehkolbenflügel ineinandergreifen. Der erste Drehkolben 121 ist auf einer Welle 131 drehmomentfest befestigt und durch diese antreibbar. Der zweite Drehkolben 122 ist auf einer zweiten Welle (nicht dargestellt) drehmomentfest befestigt und durch diese antreibbar. Die beiden Wellen sind gegenläufig angetrieben und zu diesem Zweck über ein entsprechendes Getriebe miteinander gekoppelt. Ein solches Getriebe (nicht dargestellt) befindet sich in einem Getriebegehäuse 152. Das Getriebegehäuse 152 und das Anschlussgehäuse 151 bilden zusammen eine Getriebeeinheit 150. In der hier dargestellten Ausführungsform ist das Getriebegehäuse 152 zumindest teilweise innerhalb des Anschlussgehäuses 151 angeordnet. Zwischen dem Anschlussgehäuse 151 und dem Getriebegehäuse 152 ist ein Strömungsraum 153 ausgebildet, über den die Einlassöffnung 111 mit der Pumpenkammer 141 in Fluidverbindung steht. Vorzugsweise weist die Drehkolbenpumpe 100 einen weiteren Strömungsraum (nicht dargestellt) auf, über den die Auslassöffnung 112 mit der Pumpenkammer 141 in Fluidverbindung steht.Within the pump housing 140, a pump chamber 141 is formed, in which two rotary pistons 121, 122 are arranged, whose rotary lobes engage with each other. The first rotary piston 121 is fixed torque-fixed on a shaft 131 and driven by this. The second rotary piston 122 is (not shown) fixed torque on a second shaft and driven by this. The two shafts are driven in opposite directions and coupled together for this purpose via a corresponding gear. Such a transmission (not shown) is located in a transmission housing 152. The transmission housing 152 and the connection housing 151 together form a transmission unit 150. In the embodiment shown here, the transmission housing 152 is arranged at least partially within the connection housing 151. Between the connection housing 151 and the transmission housing 152, a flow space 153 is formed, via which the inlet opening 111 is in fluid communication with the pump chamber 141. Preferably, the rotary piston pump 100 has a further flow space (not shown) via which the outlet opening 112 is in fluid communication with the pump chamber 141.

Die Einlass- und die Auslassöffnung 111, 112 sind in einer axialen Richtung, die parallel zu der Welle 131 verläuft, vom Pumpengehäuse 140 beabstandet. Anschlussgehäuse 151 und Pumpengehäuse 140 sind in axialer Richtung versetzt und grenzen in axialer Richtung aneinander an. Wie insbesondere in Fig. 6 zu erkennen ist, sind Einlass- und Auslassöffnung 111, 112 und Pumpenkammer 141 (jeweils bezogen auf ihre in axialer Richtung gesehenen Mitte) im Abstand A voneinander beabstandet.The inlet and outlet ports 111, 112 are spaced from the pump housing 140 in an axial direction that is parallel to the shaft 131. Terminal housing 151 and pump housing 140 are offset in the axial direction and adjoin one another in the axial direction. As in particular in Fig. 6 can be seen, inlet and outlet ports 111, 112 and pump chamber 141 (in each case based on their viewed in the axial direction center) at a distance A from each other.

Das Pumpengehäuse (140) ist an einer Verbindungs- oder Schnittstelle 170 lösbar mit der Getriebeeinheit 150 verbunden. Eine der beiden Wellen, hier die Welle 131, ist aus dem Getriebegehäuse 152 herausgeführt und kann mittels eines Antriebsmotors (nicht dargestellt) in Rotation versetzt werden. Diese Rotation wird durch das Getriebe (nicht dargestellt) im Getriebegehäuse 152 auf die andere Welle (nicht dargestellt) übertragen.The pump housing (140) is detachably connected to the transmission unit 150 at a connection or interface 170. One of the two shafts, here the shaft 131, is guided out of the gear housing 152 and can be rotated by means of a drive motor (not shown). This rotation is transmitted through the transmission (not shown) in the transmission housing 152 to the other shaft (not shown).

Die Welle 131 ist drehbar in dem Getriebegehäuse 152 gelagert und ragt mit einem Abschnitt 131a in die Pumpenkammer 141 hinein. Auf diesem Abschnitt 131a ist der Drehkolben 121 lösbar drehmomentfest befestigt. Der zweite Drehkolben 122 ist auf die gleiche Weise auf der nicht dargestellten zweiten Welle befestigt. Das Pumpengehäuse 140 weist keine Lagerung für die beiden Wellen auf und kann daher einstückig ausgebildet sein. Auf diese Weise ergibt sich ein besonders kostengünstig herzustellendes Pumpengehäuse 140, das ohne Kern abgegossen werden kann und nur eine Aufspannung in der Bearbeitung erfordert. Die einstückige Ausbildung des Pumpengehäuses 140 verringert weiterhin die Anzahl der Gehäusetrennstellen, so dass die Passgenauigkeit der Gehäuseteile in vorteilhafter Weise erhöht werden kann.The shaft 131 is rotatably supported in the transmission housing 152 and protrudes with a portion 131 a into the pumping chamber 141. On this section 131a of the rotary piston 121 is removably fixed torque. The second rotary piston 122 is on the same manner attached to the second shaft, not shown. The pump housing 140 has no bearing for the two shafts and may therefore be formed in one piece. In this way, results in a particularly inexpensive to produce pump housing 140, which can be poured without a core and requires only a clamping in the processing. The one-piece design of the pump housing 140 further reduces the number of housing separation points, so that the accuracy of fit of the housing parts can be increased in an advantageous manner.

Zwischen dem Pumpengehäuse 140 und der Getriebeeinheit 150 ist eine Verschleißplatte 160 angeordnet, die an der Getriebeeinheit 150 lösbar befestigt ist. Durch den erfindungsgemäßen Aufbau der Drehkolbenpumpe 100 ist es möglich, nur eine einzige Verschleißplatte 160 vorzusehen, so dass in der Wartung Zeit und Kosten gespart werden können.Between the pump housing 140 and the gear unit 150, a wear plate 160 is arranged, which is releasably secured to the gear unit 150. The inventive construction of the rotary piston pump 100, it is possible to provide only a single wear plate 160, so that in the maintenance time and costs can be saved.

Das durch den Einlassstutzen 115 und die Einlassöffnung 111 in das Anschlussgehäuse eintretende fluide Medium gelangt über einen ersten Strömungskanal 113 in die Pumpenkammer 141 und von dort über einen zweiten Strömungskanal 114 durch die Auslassöffnung 112 und den Auslassstutzen 116 wieder aus der Drehkolbenpumpe 100 hinaus. Die beiden Strömungskanäle 113, 114 weisen jeweils einen ersten Abschnitt 113a, 114a auf, der in der Getriebeeinheit 150 verläuft, und einen zweiten Abschnitt 113b, 114b, der im Pumpengehäuse 140 verläuft. Die beiden Strömungskanäle 113, 114 sind teilweise parallel zu der Welle 131, d. h. in einer im wesentlichen axialen Richtung der Drehkolbenpumpe 100 bezogen auf die Achse 180 der Drehkolbenpumpe 100 angeordnet. Dadurch ergibt sich ein teilweise axialer Zu- bzw. Abstrom von fluidem Medium in die Pumpenkammer 141. Der Strömungskanal 113 ist zumindest teilweise innerhalb des Strömungsraums 153 ausgebildet oder stellt einen Teil des Strömungsraums 153 dar. Das gleiche gilt für den Strömungskanal 114 und einen weiteren, nicht dargestellten Strömungsraum. Durch den zumindest teilweise axialen Zu- bzw. Abstrom des fluiden Mediums durch die Strömungsräume bzw. -kanäle wird der axiale Abstand A zwischen Einlass- und Auslassöffnung 111, 112 und Pumpenkammer 141 überwunden.The fluid medium entering the connection housing through the inlet connection 115 and the inlet opening 111 passes through a first flow channel 113 into the pump chamber 141 and from there through a second flow channel 114 through the outlet opening 112 and the outlet connection 116 out of the rotary piston pump 100. The two flow channels 113, 114 each have a first portion 113 a, 114 a, which extends in the gear unit 150, and a second portion 113 b, 114 b, which extends in the pump housing 140. The two flow channels 113, 114 are partially parallel to the shaft 131, d. H. arranged in a substantially axial direction of the rotary piston pump 100 relative to the axis 180 of the rotary piston pump 100. This results in a partial axial inflow or outflow of fluid medium into the pump chamber 141. The flow channel 113 is at least partially formed within the flow space 153 or constitutes a part of the flow space 153. The same applies to the flow channel 114 and another, not shown flow space. Due to the at least partially axial inflow or outflow of the fluid medium through the flow spaces or channels, the axial distance A between inlet and outlet openings 111, 112 and pump chamber 141 is overcome.

Durch die Anordnung der Einlassöffnung 111 und der Auslassöffnung 112 im Betriebszustand der Drehkolbenpumpen 100 in der oberen Hälfte des Anschlussgehäuses 151 ergibt sich eine stets sehr gute Flüssigkeitsvorlage in der Drehkolbenpumpe 100 und insbesondere in der Pumpenkammer 141, gerade in Kombination mit dem zumindest teilweise axialen Zu- bzw. Abfluss des fluiden Mediums.The arrangement of the inlet opening 111 and the outlet opening 112 in the operating state of the rotary lobe pumps 100 in the upper half of the connection housing 151 always results in a very good liquid reservoir in the rotary lobe pump 100 and in particular in the pump chamber 141, especially in combination with the at least partially axial inlet. or drainage of the fluid medium.

Wie in den Figuren 3, 4 und 8 zu erkennen ist, kann das Anschlussgehäuse 151 zwei lösbar verschließbare Ablassbohrungen 154a, b mit lösbar befestigten Verschlussdeckeln 155a, b aufweisen, durch die das zu fördernde Medium abgelassen werden kann. Dadurch wird eine Wartung der Drehkolbenpumpe 100 erleichtert, da auf diese Weise eine vollständige oder nahezu vollständige Entleerung des Anschlussgehäuses 151, insbesondere des mindestens einen zwischen dem Anschlussgehäuse und dem Getriebegehäuse ausgebildeten Strömungsraums 153 und der Strömungskanäle 113, 114, ermöglicht wird und so beispielsweise bei einer Wartung beim Öffnen der Drehkolbenpumpe 100 kein zu förderndes Medium nachläuft. Im Betriebszustand der Drehkolbenpumpe 100 ist es bevorzugt, dass die Verschlussdeckel 155a, b die Ablassbohrungen 154a, b dicht verschließen, um ein ungewolltes Austreten von zu förderndem Medium zu verhindern.As in the Figures 3 . 4 and 8th can be seen, the terminal housing 151 may have two releasably closable drain holes 154a, b with releasably attached closure lids 155a, b, through which the medium to be conveyed can be discharged. This facilitates maintenance of the rotary lobe pump 100, since in this way a complete or almost complete emptying of the connection housing 151, in particular of the at least one flow space 153 formed between the connection housing and the transmission housing and the flow channels 113, 114, is made possible and thus, for example, at one Maintenance when opening the rotary lobe pump 100 runs no medium to be pumped. In the operating state of the rotary pump 100, it is preferred that the closure lid 155 a, b, the drain holes 154 a, b close tightly to prevent accidental leakage of medium to be conveyed.

Durch die erfindungsgemäße Anordnung von Einlass- und Auslassöffnung 111, 112 am Anschlussgehäuse 151 und die Anordnung der beiden Drehkolben 121, 122 im Pumpengehäuse 140 ergeben sich mehrere Vorteile: Zum einen ist es möglich, die Drehkolbenpumpe 100 mit dem Anschlussgehäuse 151 fest in einem Rohrleitungssystem (nicht dargestellt) über die an die Einlass- bzw. Auslassöffnung 111, 112 anschließenden Stutzen 115, 116 mit Anschlussflanschen 117, 118 zu verbinden. Gleichzeitig können jedoch trotz dieser festen Verbindung des Anschlussgehäuses 151 die Verschleißteile, insbesondere die Verschleißplatte 160 und die Drehkolben 121, 122, durch Abnahme des Pumpengehäuses 140 leicht und schnell ausgetauscht werden. Weiterhin wird es auf diese Weise möglich, auch Drehkolben anderer Größe sowie Pumpengehäuse anderer Größe auf den Wellen bzw. an der Getriebeeinheit 150 zu befestigen und somit im Sinne eines Drehkolbenpumpenbausatzes Größe bzw. Leistung der Drehkolbenpumpe 100 einfach und schnell zu verändern. Dabei ist es bevorzugt, das die jeweiligen Anschlüsse bzw. Befestigungsvorrichtungen von Getriebeeinheit und Wellen einerseits sowie der Drehkolben und Pumpengehäuse unterschiedlicher Größe andererseits derart ausgestaltet sind, dass verschiedene Kombinationen mit den gleichen Anschlüssen bzw. Befestigungsvorrichtungen realisiert werden können.The inventive arrangement of inlet and outlet ports 111, 112 on the connection housing 151 and the arrangement of the two rotary pistons 121, 122 in the pump housing 140, there are several advantages: First, it is possible, the rotary pump 100 with the terminal housing 151 fixed in a pipeline system ( not shown) via connecting to the inlet and outlet ports 111, 112 connecting piece 115, 116 with connecting flanges 117, 118 to connect. At the same time, however, despite this fixed connection of the terminal housing 151, the wearing parts, in particular the wear plate 160 and the rotary pistons 121, 122, 140 can be replaced easily and quickly by removing the pump housing. Furthermore, it is possible in this way to also attach other size rotary piston and pump housing of other size on the shafts or on the gear unit 150 and thus in terms of a rotary lobe pump kit size and power of the rotary lobe pump 100 easy and fast to change. It is preferred that the respective connections or fastening devices of gear unit and shafts on the one hand and the rotary piston and pump housing of different size on the other hand are designed such that different combinations with the same connections or fastening devices can be realized.

Insgesamt weist der Aufbau der erfindungsgemäßen Drehkolbenpumpe 100 wenig Toträume auf, in denen sich Feststoffe absetzten können.Overall, the structure of the rotary lobe pump 100 according to the invention has little dead spaces in which solids can settle.

Claims (14)

  1. Rotary lobe pump (100) for conveying a fluid medium containing solids, comprising
    - an inlet orifice (111) and an outlet orifice (112) for the medium to be conveyed,
    - two rotary pistons (121, 122) having mutually meshing rotary piston vanes disposed in a pump housing (140), and each of the two rotary pistons is mounted respectively on a shaft (131) so as to rotate in unison with it and can be driven by the respective shaft, and the two shafts are coupled with one another by a gear mechanism disposed in a gear housing (152),
    characterised in that
    - the inlet orifice and outlet orifice are disposed on a connector housing (151), and
    - the gear housing (152) and connector housing (151) are designed as a gear unit (150).
  2. Rotary lobe pump (100) as claimed in the preceding claim,
    characterised in that the pump housing (140) and gear unit (150) are detachably connected to one another.
  3. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the two rotary pistons (121, 122) are releasably mounted on the respective shaft (131).
  4. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised by a wear plate (160) disposed between the pump housing (140) and the gear unit (150), which wear plate is preferably detachably mounted on the gear unit.
  5. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the rotary lobe pump has only one wear plate (160).
  6. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the pump housing (140) does not have a bearing for the two shafts (131).
  7. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the pump housing (140) is of an integral design.
  8. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the inlet orifice (111) is connected via a first flow passage (113) and the outlet orifice (112) via a second flow passage (114) to a pump chamber (141) provided in the interior of the pump housing, and at least a part of the first and second flow passage extends in a substantially axial direction disposed parallel with the shafts (131).
  9. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the inlet orifice (111) and the outlet orifice (112) are disposed in the top half of the connector housing (151) when the rotary lobe pump is in operation.
  10. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the inlet orifice (111) and the outlet orifice (112) are disposed in the connector housing (151) so that when the rotary lobe pump is in operation, a first axis disposed at a right angle to a plane containing the inlet orifice and a second axis disposed at a right angle to a plane containing the outlet orifice are respectively inclined at an angle of 45° with respect to a vertical.
  11. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised by an inlet fitting (115) having an inlet flange (117) connecting to the inlet orifice (111) and an outlet fitting (116) having an outlet flange (118) connecting to the outlet orifice (112), which inlet fitting and outlet fitting are designed and can be mounted on the connector housing (151) in a first fixing position so that the inlet and/or outlet flange is or are disposed horizontally when the rotary lobe pump is in operation and/or in a second fixing position so that the inlet and/or outlet flange is or are disposed vertically when the rotary lobe pump is in operation.
  12. Rotary lobe pump (100) as claimed in one of the preceding claims,
    characterised in that the connector housing (151) has at least one releasably closable drainage hole by means of which the medium to be conveyed can be drained.
  13. Rotary lobe pump kit for supplying rotary lobe pumps (100) of different sizes and/or capacities, comprising a rotary lobe pump as claimed in one of the preceding claims and further characterised by at least two other rotary pistons of a different size having mutually meshing rotary piston vanes, and the two shafts (131) and the at least two other rotary pistons of a different size are designed so that the at least two other rotary pistons of a different size can be detachably mounted on the respective one of the two shafts.
  14. Rotary lobe pump kit as claimed in the preceding claim,
    characterised by at least one other pump housing of a different size, and the gear unit (150) and the at least one other pump housing of a different size are designed so that the at least one other pump housing of a different size can be detachably mounted on the gear unit.
EP11748632.4A 2010-08-20 2011-08-18 Rotary piston pump Active EP2606234B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL11748632T PL2606234T3 (en) 2010-08-20 2011-08-18 Rotary piston pump
SI201130788A SI2606234T1 (en) 2010-08-20 2011-08-18 Rotary piston pump
HRP20160309TT HRP20160309T1 (en) 2010-08-20 2016-03-24 Rotary piston pump
CY20161100280T CY1117347T1 (en) 2010-08-20 2016-04-06 WATER PUMP

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202010011626U DE202010011626U1 (en) 2010-08-20 2010-08-20 Rotary pump
PCT/EP2011/064229 WO2012022784A2 (en) 2010-08-20 2011-08-18 Rotary piston pump

Publications (2)

Publication Number Publication Date
EP2606234A2 EP2606234A2 (en) 2013-06-26
EP2606234B1 true EP2606234B1 (en) 2016-01-20

Family

ID=42994211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11748632.4A Active EP2606234B1 (en) 2010-08-20 2011-08-18 Rotary piston pump

Country Status (19)

Country Link
US (1) US9127673B2 (en)
EP (1) EP2606234B1 (en)
JP (1) JP5918766B2 (en)
KR (1) KR101845572B1 (en)
CN (1) CN103140682B (en)
AU (1) AU2011290716B2 (en)
BR (1) BR112013004008B8 (en)
CY (1) CY1117347T1 (en)
DE (1) DE202010011626U1 (en)
DK (1) DK2606234T3 (en)
ES (1) ES2566340T3 (en)
HK (1) HK1181834A1 (en)
HR (1) HRP20160309T1 (en)
HU (1) HUE027120T2 (en)
NZ (1) NZ607424A (en)
PL (1) PL2606234T3 (en)
RS (1) RS54565B1 (en)
SI (1) SI2606234T1 (en)
WO (1) WO2012022784A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009012158U1 (en) 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Rotary pump
EP2643589B1 (en) 2010-11-22 2021-04-21 Micropump Inc. Pumps and pump-heads with separately removable field-serviceable portion
US9624929B2 (en) * 2012-12-21 2017-04-18 Lg Innotek Co., Ltd. Electric pump
US9605673B2 (en) * 2013-10-17 2017-03-28 Tuthill Corporation Pump with pivoted vanes
DE202014001511U1 (en) 2014-02-20 2015-05-21 Hugo Vogelsang Maschinenbau Gmbh Insertion device for multi-layer fertilization
DE102016120579B3 (en) * 2016-10-27 2018-04-05 Klaus Union Gmbh & Co. Kg Horizontally split screw pump
CN107178498A (en) * 2017-07-22 2017-09-19 马鞍山聚力科技有限公司 A kind of double dynamical translation delivery pump for carrying cooling
DE202018107141U1 (en) 2018-12-13 2020-03-18 Vogelsang Gmbh & Co. Kg Rotary lobe pump with internal bearing
DE102019202416A1 (en) * 2019-02-22 2020-10-29 Syntegon Technology Gmbh Filling device for filling a defined amount of a product
DE102019128602B3 (en) * 2019-10-23 2021-02-11 Leistritz Pumpen Gmbh Screw pump

Family Cites Families (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1972565A (en) * 1928-11-14 1934-09-04 Tuthill Pump Co Rotary engine
US2105428A (en) * 1934-06-02 1938-01-11 Brown & Sharpe Mfg Gear pump seal
US2096490A (en) * 1935-12-16 1937-10-19 Waukesha Foundry Co Rotary pump
US2338609A (en) * 1939-05-10 1944-01-04 Pittsburgh Equitable Meter Co Fluid meter
US2540235A (en) * 1946-12-13 1951-02-06 Hpm Dev Corp Fluid operable apparatus
GB856706A (en) 1958-03-05 1960-12-21 Raymond De Michelis Improvements in gear pumps
US3039398A (en) 1958-11-18 1962-06-19 Claude F Bedouet Pump for pulverulent material
US3067687A (en) * 1959-06-16 1962-12-11 Thompson Ramo Wooldridge Inc Selective tandem pump mounting
GB901266A (en) 1961-04-14 1962-07-18 Claude Bedouet Improvements in or relating to gear pumps
FR1326006A (en) 1962-06-01 1963-05-03 Pump for powdery or granular or pasty products
US3198120A (en) * 1962-10-29 1965-08-03 Waukesha Foundry Co Multiple positive displacement pump
FR1492841A (en) 1966-02-10 1967-08-25 volumetric powder elevator with pressure regulating chambers
FR2239138A5 (en) 1973-07-27 1975-02-21 Baudoino Mario Pump with press. regulating chambers for powder - has two three-lobe rotors and diaphragms to smooth flow
JPS5161005A (en) 1974-11-26 1976-05-27 Atom Kagaku Toryo Kk Romenhyoshikizairyoatsusoyohonpu
JPS585496A (en) * 1981-07-03 1983-01-12 Nikkiso Co Ltd Improvement of canned motor pump
SE445245B (en) * 1982-06-23 1986-06-09 Jerzy Janczak HYDRAULIC PUMP OR HYDRAULIC ENGINE
JPS5952191U (en) * 1982-09-30 1984-04-05 株式会社島津製作所 gear pump
US4606712A (en) 1984-11-14 1986-08-19 Abex Corporation Self-pumping pump shaft seal
US4787332A (en) * 1986-02-12 1988-11-29 Robotics, Inc. Adhesive dispensing pump control system
DE3785192D1 (en) * 1987-05-15 1993-05-06 Leybold Ag TWO-SHAFT VACUUM PUMP WITH SCHOEPFRAUM.
SE462537B (en) * 1988-03-17 1990-07-09 Johnson Pump Ab DEVICE CONTAINING A PUMP WITH A PUMP HOUSE MAKING THE FOUNDATION OF THE PUMP
GB9200217D0 (en) 1992-01-07 1992-02-26 Snell Michael J Water turbines
DE4218855A1 (en) 1992-06-09 1993-12-16 Carl Enke Gmbh Pumpen Und Gebl Rotary piston pump for fluids containing abrasive solids - uses rotary pistons with peripheral profiled layers in form of waves or teeth
EP0595764B1 (en) 1992-10-29 1997-10-29 Sulzer Chemtech AG Gear pump
US5439358A (en) 1994-01-27 1995-08-08 Weinbrecht; John F. Recirculating rotary gas compressor
US5567140A (en) 1995-04-24 1996-10-22 Itt Corporation Keyed insert plate for curved rotary lobe pump chamber walls
US5702240A (en) 1995-05-05 1997-12-30 Tuthill Corporation Rotary positive displacement blower having a diverging outlet part
IT1290106B1 (en) 1997-03-17 1998-10-19 Finder Pompe Spa VOLUMETRIC BLOWER WITH LIDS EQUIPPED WITH CONNECTION DUCT WITH THE DELIVERY MANIFOLD
US6095781A (en) * 1997-09-11 2000-08-01 Viking Pump, Inc. Timed element, high pressure, industrial rotary lobe pump
US6152719A (en) * 1997-09-18 2000-11-28 Roper Pump Company Gear pump having an inlet port aligned with the drive shaft
US6099277A (en) 1998-08-12 2000-08-08 Dresser Industries, Inc. Gas blower and method utilizing recirculation openings
CN2348151Y (en) * 1998-09-19 1999-11-10 丹东市油泵厂 Rotary positive displacement Roots oil pump
US6283740B1 (en) * 1998-12-04 2001-09-04 Antony Mark Brown Rotary lobe pumps
US6062827A (en) * 1999-06-07 2000-05-16 Shu; Wu-Shuan Rotary pump
US6203297B1 (en) * 1999-09-29 2001-03-20 Dresser Equipment Group, Inc. Fluid flow device with improved cooling system and method for cooling a vacuum pump
SI1540184T1 (en) 2002-06-03 2016-02-29 M&M Technologies, Inc. Gear pump
DE10239558B4 (en) 2002-08-28 2005-03-17 SCHWäBISCHE HüTTENWERKE GMBH External gear pump with pressurized fluid precharge
US6783340B2 (en) * 2002-09-13 2004-08-31 Parker-Hannifin Corporation Rotor with a hydraulic overbalancing recess
DE10257859C5 (en) * 2002-12-11 2012-03-15 Joh. Heinr. Bornemann Gmbh Screw Pump
JP2005069138A (en) * 2003-08-26 2005-03-17 Toyota Motor Corp Gear pump
ITVI20040035A1 (en) * 2004-03-04 2004-06-04 Refcomp Spa MODULAR VOLUMETRIC COMPRESSOR
DE102004037561A1 (en) 2004-08-03 2006-03-16 Hugo Vogelsang Maschinenbau Gmbh Rotary pump
DE102005017575A1 (en) 2004-08-05 2006-03-16 Börger GmbH Rotary pump with a pump housing and two double-winged rotary pistons
DE202005010467U1 (en) 2005-06-30 2006-11-09 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump has pair of oppositely driven pistons in housing which has fluid inlet and outlet openings with wider angles for faster filling and less cavitation
GB2429751A (en) 2005-08-31 2007-03-07 Alfa Laval Corp Ab Axially removable flanged wearplate for lobe pump
CN200946568Y (en) 2006-07-20 2007-09-12 山东长志泵业有限公司 Partition plate type multiple axle rotary piston pump
US8007264B2 (en) * 2006-08-08 2011-08-30 Spx Corporation Positive displacement pump apparatus and method
DE102007054544A1 (en) 2006-11-29 2008-06-05 Hugo Vogelsang Maschinenbau Gmbh Rotary piston pump for tank lorry, has pipe line fixedly connected with tank and exit pipe line, housing part with its pipe lines fixedly connected with tank, and another housing part screwing housing with former housing part
WO2009039881A1 (en) 2007-09-21 2009-04-02 Maag Pump Systems Textron Ag Gearwheel pump with split pump housing
US7905717B2 (en) * 2008-06-09 2011-03-15 Wright Flow Technologies Limited PD pumps with a common gearbox module and varying capacities and easy access to mechanical seals
JP2010013951A (en) * 2008-07-01 2010-01-21 Futsuko Kinzoku Kogyo Kk Two-shaft screw pump
DE202009009093U1 (en) 2009-07-01 2009-11-05 Hugo Vogelsang Maschinenbau Gmbh Rotary pump with angular gear
DE202009012158U1 (en) 2009-09-08 2011-02-03 Hugo Vogelsang Maschinenbau Gmbh Rotary pump

Also Published As

Publication number Publication date
SI2606234T1 (en) 2016-05-31
ES2566340T3 (en) 2016-04-12
KR20140020818A (en) 2014-02-19
HUE027120T2 (en) 2016-08-29
DK2606234T3 (en) 2016-02-15
WO2012022784A3 (en) 2013-05-02
CN103140682A (en) 2013-06-05
HK1181834A1 (en) 2013-11-15
US20130202474A1 (en) 2013-08-08
PL2606234T3 (en) 2016-07-29
NZ607424A (en) 2015-03-27
EP2606234A2 (en) 2013-06-26
RS54565B1 (en) 2016-06-30
BR112013004008B8 (en) 2022-08-30
HRP20160309T1 (en) 2016-04-22
WO2012022784A2 (en) 2012-02-23
DE202010011626U1 (en) 2010-10-21
KR101845572B1 (en) 2018-04-04
BR112013004008A2 (en) 2016-06-28
BR112013004008B1 (en) 2021-01-12
CN103140682B (en) 2016-01-20
AU2011290716B2 (en) 2015-01-22
JP2013536360A (en) 2013-09-19
CY1117347T1 (en) 2017-04-26
JP5918766B2 (en) 2016-05-18
US9127673B2 (en) 2015-09-08
AU2011290716A1 (en) 2013-03-07

Similar Documents

Publication Publication Date Title
EP2606234B1 (en) Rotary piston pump
DE19536997C1 (en) Double pump with charge pump
EP0166807B1 (en) Rotary vane vacuum pump
EP3464951B1 (en) Cylindrical-gear transmission
DE19963171A1 (en) Screw-type vacuum pump used in cooling circuits has guide components located in open bores in shafts serving for separate guiding of inflowing and outflowing cooling medium
DE102015221234A1 (en) Spur gears
EP2539061B1 (en) Mixer
DE202019106394U1 (en) Multi-way valve for adjusting a fluid flow
EP3532729B1 (en) Horizontally split screw-spindle pump
DE202011050654U1 (en) Distributor device for a solids-laden liquid
DE3227926C3 (en) Hydraulic unit
DE102012216122A1 (en) Fluid conveying device e.g. double external low pressure gear pump for conveying hydraulic oil, has pair of gears exhibiting same axle distance and different gear geometries to provide different pressures and/or volumetric flows
DE102019128602B3 (en) Screw pump
DE102013101164B4 (en) Screw Pump
EP4198311A1 (en) Screw spindle pump
EP1676795B1 (en) Cellular wheel sluice with heatable casing
EP1854525B1 (en) Filtering device
EP1717208B1 (en) Device for fluid treatment, in particular for waste water treatment, with a stack of discs
DE3502839A1 (en) Pump
EP3358225B1 (en) Compact transmission motor assembly
EP3820271B1 (en) Distribution apparatus for a slurry
CH640608A5 (en) Centrifugal pump having a double-entry, bispiral casing and an axially removable inner block
DE2857227A1 (en) LIQUID RING PUMP
DE102008063281A1 (en) vacuum pump
WO2023052431A1 (en) Drive device for a motor vehicle having an operating medium tank formed in a machine housing

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1181834

Country of ref document: HK

17P Request for examination filed

Effective date: 20131104

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20141030

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150709

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: RENTSCH PARTNER AG, CH

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20160211

Ref country code: AT

Ref legal event code: REF

Ref document number: 771862

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160215

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502011008738

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: HR

Ref legal event code: TUEP

Ref document number: P20160309

Country of ref document: HR

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2566340

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20160412

REG Reference to a national code

Ref country code: HR

Ref legal event code: T1PR

Ref document number: P20160309

Country of ref document: HR

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20160415

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20160120

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E011847

Country of ref document: EE

Effective date: 20160418

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 20689

Country of ref document: SK

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E027120

Country of ref document: HU

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160520

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20160400616

Country of ref document: GR

Effective date: 20160601

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011008738

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

26N No opposition filed

Effective date: 20161021

REG Reference to a national code

Ref country code: HK

Ref legal event code: GR

Ref document number: 1181834

Country of ref document: HK

REG Reference to a national code

Ref country code: HR

Ref legal event code: PBON

Ref document number: P20160309

Country of ref document: HR

Effective date: 20160818

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160420

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20160818

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E011847

Country of ref document: EE

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170309

Ref country code: LT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160818

Ref country code: LV

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160818

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160831

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160819

REG Reference to a national code

Ref country code: GR

Ref legal event code: ML

Ref document number: 20160400616

Country of ref document: GR

Effective date: 20170309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160818

Ref country code: RS

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160818

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160818

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: BELLERIVESTRASSE 203 POSTFACH, 8034 ZUERICH (CH)

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160120

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20200813

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SI

Payment date: 20200807

Year of fee payment: 10

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 20689

Country of ref document: SK

Effective date: 20210818

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20220406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210818

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230823

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230811

Year of fee payment: 13

Ref country code: RO

Payment date: 20230808

Year of fee payment: 13

Ref country code: NO

Payment date: 20230822

Year of fee payment: 13

Ref country code: IT

Payment date: 20230831

Year of fee payment: 13

Ref country code: IE

Payment date: 20230821

Year of fee payment: 13

Ref country code: GB

Payment date: 20230824

Year of fee payment: 13

Ref country code: FI

Payment date: 20230823

Year of fee payment: 13

Ref country code: ES

Payment date: 20230918

Year of fee payment: 13

Ref country code: CZ

Payment date: 20230804

Year of fee payment: 13

Ref country code: CH

Payment date: 20230902

Year of fee payment: 13

Ref country code: AT

Payment date: 20230818

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230823

Year of fee payment: 13

Ref country code: PT

Payment date: 20230817

Year of fee payment: 13

Ref country code: PL

Payment date: 20230801

Year of fee payment: 13

Ref country code: FR

Payment date: 20230821

Year of fee payment: 13

Ref country code: DK

Payment date: 20230823

Year of fee payment: 13

Ref country code: DE

Payment date: 20230907

Year of fee payment: 13

Ref country code: BE

Payment date: 20230822

Year of fee payment: 13