EP2556255B1 - Kontaktelement für drehkolbenpumpen - Google Patents

Kontaktelement für drehkolbenpumpen Download PDF

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Publication number
EP2556255B1
EP2556255B1 EP11729046.0A EP11729046A EP2556255B1 EP 2556255 B1 EP2556255 B1 EP 2556255B1 EP 11729046 A EP11729046 A EP 11729046A EP 2556255 B1 EP2556255 B1 EP 2556255B1
Authority
EP
European Patent Office
Prior art keywords
rotary
contact element
pump housing
pump
pistons
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
EP11729046.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2556255A2 (de
Inventor
Hans Jürgen LINDE
Bernhard Murrenhoff
Robert Kurz
Reinhard Denk
Josef Strassl
Thomas Böhme
Hisham Kamal
Stefan Weigl
Roger Willis
Stefan Kern
Johann Kreidl
Gunter Herr
Franz Kneidl
Mikael Tekneyan
Erwin Weber
Marcel Verhoeven
Mathias Gradl
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.)
Netzsch Pumpen and Systeme GmbH
Original Assignee
Netzsch Pumpen and Systeme 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 Netzsch Pumpen and Systeme GmbH filed Critical Netzsch Pumpen and Systeme GmbH
Publication of EP2556255A2 publication Critical patent/EP2556255A2/de
Application granted granted Critical
Publication of EP2556255B1 publication Critical patent/EP2556255B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/126—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/24—Fluid mixed, e.g. two-phase fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/801—Wear plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/802—Liners

Definitions

  • the present invention relates to rotary lobe pumps with contact elements for the rotary lobes and for the pump housing of the rotary lobe pump.
  • the rotary lobe pump according to the invention consists of at least two rotary pistons moving in opposite directions, which are arranged in an oval pump housing.
  • Each rotary lobe has at least two rotary lobe vanes and each rotary lobe is provided with at least one contact element.
  • German patent application DE 37 07 722 A1 discloses a rotor pump, in particular for the conveyance of liquids containing solids.
  • the patent application discloses a rotor pump, in which plastic or rubber strips are detachably connected to the outer ends of the displacement wings of the rotary lobes. The elastic strips described are introduced into a groove and releasably connected with one or more screws in the radial direction to the outer end of the displacer wing.
  • German patent specification DE 1 553 031 A1 describes a rotary lobe pump in which the housing inner wall is provided with an enamel layer.
  • This enamel layer serves on the one hand to protect the housing against corrosive media and on the other hand the media slip between the rotary lobes and the inside wall of the housing should be reduced.
  • German patent DE 1 807 392 A1 describes a rotary lobe pump in which at least the top flanks of the rotary lobes, which cooperate with the inner wall of the housing, are provided with a corrosion- and abrasion-resistant plastic. Furthermore, the inner wall of the housing is provided with an enamel layer. In addition to this corrosion and / or abrasion protection, the end faces of the rotary pistons and / or the housing can be covered with enamelled plates or with plates made of a plastic. A flexible soft material is preferably used for the covering.
  • a rotary lobe pump for pumping liquid media with a high solid content is in the German patent application DE 42 18 855 A1 disclosed.
  • the patent application discloses a rotary lobe pump in which the rotary lobes are provided with a jacket all around.
  • the jacket is characterized in that it has a profiling on the outer surfaces of the piston circumferences in the form of grooves of different designs.
  • the invention has for its object to provide an economical and wear-resistant rotary lobe pump that has a high delivery rate.
  • the rotary lobe pump according to the invention consists of at least two counter-rotating lobes which are arranged in an oval pump housing.
  • each rotary piston has at least two rotary piston vanes, each of these rotary pistons being provided with at least one contact element.
  • the at least two rotary pistons of the rotary piston pump are each provided with at least one contact element at the contact points on their flanks. At least two rotary pistons form a friction pair at the contact points.
  • the inside of the oval pump housing is also provided with at least one interchangeable contact element.
  • the contact elements, which are arranged on the flanks of the two rotary pistons of the rotary piston pump, are also interchangeable.
  • the arrangement and configuration of the contact elements on the flanks of the rotary pistons ensures the operative connection between the contact elements and the at least two rotary pistons in every rotational angle position of the rotary pistons.
  • the exchangeable contact element of the pump housing is made up of at least two contact elements; this can also be a contact element which is made up of several parts.
  • such a contact element will be a structure which partially covers the rear of the pump housing and the radial surfaces, as well as the approaches of the inlets and outlets. Recesses are provided in the back through which the shafts for receiving the rotary pistons can be guided.
  • the contact element of the pump housing has projections on the radial surfaces which are inserted into the inflow opening and into the outflow opening of the pump housing. Another part of the contact element is located in the cover on the front side of the pump housing. After installing the cover, this part is in operative connection with the contact element of the pump housing in the area of the sealing surface.
  • the contact elements of the at least two rotary pistons and / or the pump housing are made of a sealing and / or slidable material. These materials can include rubber, PTFE, metals or material mixtures.
  • the contact elements of the rotary pistons and the pump housing can consist of different materials and / or material mixtures.
  • the material pairing between the rotary piston and the contact element must be selected in such a way that the rotary pistons form a friction pairing and that the movement of the rotary pistons in the pump housing is not blocked. It is clear to the person skilled in the art that rotary lobe pumps can be lined with a wide variety of materials depending on the area of application. The same applies to the contact elements of the rotary lobes. Thus, the aforementioned selection of materials does not represent a final limitation of the protection area.
  • the contact elements for the pump housing and the rotary pistons can be made of different materials be. It is possible to reinforce a first layer of the contact element, which is inserted into the interior of the pump housing, for example with fibers and / or other materials.
  • the second layer of the contact element is designed in a rubberized form, which ensures that the rotary pistons form a friction pair with one another.
  • the inner layer is harder and more stable than the other.
  • the person skilled in the art is aware that the choice of material combinations depends on the field of application of the rotary lobe pump. The type of material arrangement may have to be selected according to the type of application.
  • the contact elements of the rotary pistons are rectangular or trapezoidal.
  • flanks of the rotary pistons which are provided with contact elements, are such that, for each rotary angle position of the rotary pistons, only materials form an effective combination with one another, which results in the lowest possible coefficient of friction.
  • This friction pairing ensures trouble-free operation of the rotary lobe pump.
  • the contact elements are not only designed to ensure the friction pairing, but also as wear and / or corrosion protection.
  • the contact elements of the rotary pistons consist of an elastomer and the rotary pistons themselves consist of a metallic material, because the friction surface of the rotary pistons is smaller than the friction surface of the Contact elements. This ensures that there is no excessive wear on the pump components.
  • the contact elements of the rotary pistons have a thickness of 0.5 mm to 20 mm, alternatively a thickness in the ratio of 1: 3 to 1: 300 to the distance between the two piston flanks. In the preferred embodiment, the contact elements with a thickness of 3 mm to 7 mm are used. In order to ensure a secure operative connection between the rotary pistons, it is important that the contact elements are securely connected to the rotary pistons. This non-positive and / or positive and / or material connection is generated in that the contact elements are connected to the rotary piston by vulcanization and / or gluing. It is also conceivable that the contact elements can be connected to the rotary pistons by a screw connection or by clamping connections.
  • the material in the embodiments can have a hardness between 10 Shore A and 100 Shore A and between 10 Shore D and 100 Shore D.
  • the contact elements are designed with a hardness between 50 Shore A and 100 Shore A. Possible metallic materials that can be used for the production of the contact elements can also be produced in different degrees of hardness.
  • the end face of the rotary pistons and the contact elements on the end plate of the pump housing form an effective pairing after the end plate has been installed. This effective combination is characterized by a particularly small contact or gap dimension.
  • the very small gap dimension ensures that as little material as possible to be pumped flows past the rotary lobe and that the rotary lobe pump has very good suction power.
  • FIG. 1 shows the schematic structure of a rotary lobe pump 20.
  • the rotary lobe pump 20 essentially consists of a motor 44 and a pump housing 28 in which the rotary lobes 22 are arranged.
  • An inflow opening 41 and an outflow opening 42 are also shown.
  • Figure 2 shows how the rotary pistons 22 are arranged in the pump housing 28.
  • the inflow opening 41 and the outflow opening 42 are also shown, in which a contact element 34b of the pump housing 28 can be seen.
  • the contact elements 34a of the rotary pistons 22 are attached to the flanks 24 of the rotary pistons 22.
  • the Figure 3 shows the construction of a pump housing 28 with one of two rotary pistons 22 and the contact elements 34a and 34b in an exploded view.
  • the pump housing 28 can be seen, on the inside 32 of which the contact element 34b is inserted.
  • the rotary pistons are then in the contact element 34b 22 used.
  • the rotary piston 22 has two flanks 24 and two caps 26. Recesses 35 for receiving the contact elements 34a are made in the flanks 24.
  • the contact elements 34a are dimensioned such that it is ensured that the caps 26 of the one rotary piston 22 are always in operative connection with a contact element 34a of the second rotary piston 22.
  • an end plate 30 is shown with which the pump housing 28 is closed.
  • the end plate 30 of the pump housing 28 is also provided with a contact element 34b. After assembly, this contact element 34b forms with one end face 27 of the rotary pistons 22 a unit which has only a minimal gap. Furthermore, the pump housing 28 is tightly closed by the interaction of the contact element 34b of the end plate 30 with a sealing surface 37, which is located on the contact element 34b of the pump housing 28.
  • the structure of the contact element 34b for the pump housing 28 is shown in a front view.
  • the contact element 34b has an oval basic shape.
  • two recesses 36 are made, through which the shafts (not shown here) are guided, to which the rotary pistons 22 are fastened.
  • the sealing surface 37 can be seen, which rotates all around the contact element 34b on its front side. With this sealing surface 37 we ensure the seal between the contact element 34b of the end plate 30 (not shown here) and the pump housing 28.
  • the approaches 38 for the inflow opening 41 and the outflow opening 42 on the flanks 40 of the contact element 34b are shown.
  • Figure 5 shows a front view of the pump housing 28 in which the contact element 34b for the pump housing 28 and two rotary pistons 22 are located.
  • the inflow opening 41 and the outflow opening 42 can be seen on the two flanks 40 of the pump housing 28.
  • the sealing surface 37 can be seen all around the pump housing 28.
  • the rotary pistons 22 are arranged in the interior 32 of the pump housing 28.
  • the contact elements 34a can be seen on the flanks 24 of the rotary pistons 22.
  • the caps 26 of the rotary pistons 22 are either operatively connected to the contact element 34b of the pump housing 28 or to the contact element 34a of the other rotary piston 22.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP11729046.0A 2010-04-08 2011-04-06 Kontaktelement für drehkolbenpumpen Active EP2556255B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010014248.4A DE102010014248B4 (de) 2010-04-08 2010-04-08 Kontaktelemente für Drehkolbenpumpen
PCT/DE2011/000372 WO2011124212A2 (de) 2010-04-08 2011-04-06 Kontaktelemente für drehkolbenpumpen

Publications (2)

Publication Number Publication Date
EP2556255A2 EP2556255A2 (de) 2013-02-13
EP2556255B1 true EP2556255B1 (de) 2020-08-05

Family

ID=44581850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11729046.0A Active EP2556255B1 (de) 2010-04-08 2011-04-06 Kontaktelement für drehkolbenpumpen

Country Status (10)

Country Link
US (1) US20130129555A1 (zh)
EP (1) EP2556255B1 (zh)
CN (1) CN103201458B (zh)
AU (1) AU2011238239B2 (zh)
BR (1) BR112012025732B1 (zh)
CL (1) CL2012002794A1 (zh)
DE (1) DE102010014248B4 (zh)
MX (1) MX2012011669A (zh)
SG (1) SG184425A1 (zh)
WO (1) WO2011124212A2 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012003066B3 (de) * 2012-02-17 2013-07-04 Netzsch Pumpen & Systeme Gmbh Verfahren und vorrichtung zum fixieren und synchronisieren von drehkolben in einer drehkolbenpumpe
DE102012003287A1 (de) 2012-02-20 2013-08-22 Netzsch Pumpen & Systeme Gmbh Drehkolben
DE102014117483A1 (de) 2014-04-14 2015-10-15 Erich Netzsch Gmbh & Co. Holding Kg Verstellbare Pumpeinheit für eine Verdrängerpumpe
CN108061032B (zh) * 2017-11-21 2019-02-22 燕山大学 无脉动高阶椭圆齿轮泵
DE102018008264B4 (de) 2018-10-18 2020-11-12 Doris Korthaus Drehkolbenpumpe mit Verschleißelementen zur Förderung von mit Feststoffen durchsetzten Fördermedien
DE202018004820U1 (de) 2018-10-18 2018-11-19 Doris Korthaus Drehkolbenpumpe mit Verschleißelementen zur Förderung von mit Feststoffen durchsetzten Fördermedien
DE202022104701U1 (de) * 2022-08-19 2023-11-22 Vogelsang Gmbh & Co. Kg Verdrängerkörper und Pumpengehäuse für eine Verdrängerpumpe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR427472A (fr) * 1911-03-17 1911-08-04 Dauxin Soc Pompe rotative pouvant également servir de compresseur

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1097783A (en) * 1911-01-28 1914-05-26 Burgess Sulphite Fibre Co Process of blowing acid gases.
GB191206686A (en) * 1911-03-24 1912-07-18 Thomas Wilbraham Green Improvements in or relating to Rotary Blowers.
US2519588A (en) * 1943-12-24 1950-08-22 Borg Warner Pump housing
US2754050A (en) * 1950-04-22 1956-07-10 Gen Motors Corp Rotary blower
US2966860A (en) * 1957-04-03 1961-01-03 Lobee Pump & Machinery Co Pump for corrosive fluids
LU48131A1 (zh) * 1964-03-28 1965-05-05
DE1553031C3 (de) 1965-10-29 1974-03-14 Eisenwerke Kaiserslautern Gmbh, 6750 Kaiserslautern Drehkolbenpumpe zum Fördern zähflüssiger Stoffe
DE2056661C3 (de) 1970-11-18 1975-03-27 Eisenwerke Kaiserslautern Gmbh, 6750 Kaiserslautern Verdrängerflügel für eine Drehkolbenpumpe zum Fördern zähflüssiger, gegebenenfalls inhomogener, korrosiver Medien
FR96392E (fr) 1968-11-07 1972-06-16 Eisenwerke Kaiserslautern G M Pompe a pistons rotatifs pour produits visqueux.
US4028021A (en) * 1975-12-08 1977-06-07 Curtiss-Wright Corporation Rotary trochoidal compressor with compressible sealing
DE3010659C2 (de) * 1980-03-20 1988-06-16 Fa. Friedrich Theysohn, 3012 Langenhagen Doppelschneckenextruder mit Verschleißeinsatz
EP0225937B1 (de) * 1985-12-19 1990-08-29 Gerhard Eckart Drehkolbenpumpe zur Förderung von Gülle oder dgl.
EP0180788A1 (en) * 1984-10-08 1986-05-14 Shimadzu Corporation Gear pump or motor
JPS62191684A (ja) * 1986-02-17 1987-08-22 Kosaka Kenkyusho:Kk ２軸回転ポンプのケ−シング
DE3712354A1 (de) * 1986-11-08 1988-05-11 Wankel Gmbh Rotationskolbengeblaese
DE3707722A1 (de) 1987-03-11 1988-09-29 Alois Boerger Rotorpumpe, insbesondere fuer die foerderung von feststoffe enthaltenden fluessigkeiten
DE4218855A1 (de) 1992-06-09 1993-12-16 Carl Enke Gmbh Pumpen Und Gebl Drehkolbenpumpe
US5567140A (en) * 1995-04-24 1996-10-22 Itt Corporation Keyed insert plate for curved rotary lobe pump chamber walls
US5816699A (en) * 1997-06-13 1998-10-06 Entek Manufacturing Inc. Twin screw extruder barrel with an easily removable seamless insert having a wear and corrosion resistant lining
GB2429751A (en) 2005-08-31 2007-03-07 Alfa Laval Corp Ab Axially removable flanged wearplate for lobe pump
US8337182B2 (en) * 2006-10-03 2012-12-25 Schlumberger Technology Corporation Skinning of progressive cavity apparatus
DE102012008527B3 (de) * 2012-05-02 2013-07-25 Netzsch Pumpen & Systeme Gmbh Drehkolbenpumpe mit optimierten ein-und auslässen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR427472A (fr) * 1911-03-17 1911-08-04 Dauxin Soc Pompe rotative pouvant également servir de compresseur

Also Published As

Publication number Publication date
US20130129555A1 (en) 2013-05-23
CN103201458B (zh) 2015-09-16
WO2011124212A3 (de) 2013-03-21
EP2556255A2 (de) 2013-02-13
BR112012025732A2 (pt) 2016-06-28
SG184425A1 (en) 2012-11-29
CL2012002794A1 (es) 2013-02-08
DE102010014248A1 (de) 2011-10-13
AU2011238239A1 (en) 2012-11-15
DE102010014248B4 (de) 2016-04-28
BR112012025732B1 (pt) 2021-02-23
MX2012011669A (es) 2012-12-17
CN103201458A (zh) 2013-07-10
WO2011124212A2 (de) 2011-10-13
AU2011238239B2 (en) 2015-08-13

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