EP0380050A2 - Disposition du stator pour des pompes excentriques à spirale - Google Patents

Disposition du stator pour des pompes excentriques à spirale Download PDF

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Publication number
EP0380050A2
EP0380050A2 EP90101298A EP90101298A EP0380050A2 EP 0380050 A2 EP0380050 A2 EP 0380050A2 EP 90101298 A EP90101298 A EP 90101298A EP 90101298 A EP90101298 A EP 90101298A EP 0380050 A2 EP0380050 A2 EP 0380050A2
Authority
EP
European Patent Office
Prior art keywords
stator
metal sleeve
arrangement according
flanges
circumferential surface
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.)
Withdrawn
Application number
EP90101298A
Other languages
German (de)
English (en)
Other versions
EP0380050A3 (fr
Inventor
Antal Nádor
jr. Dipl.-Ing. Nádor Antal
Akos Dipl.-Ing. Petrik
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.)
HIDROMECHANIKA SZIVATTYU- ES ANYAGMOZGATOGEP- GYARTO KISSZOVETKEZET
Original Assignee
HIDROMECHANIKA SZIVATTYU- ES ANYAGMOZGATOGEP- GYARTO KISSZOVETKEZET
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 HIDROMECHANIKA SZIVATTYU- ES ANYAGMOZGATOGEP- GYARTO KISSZOVETKEZET filed Critical HIDROMECHANIKA SZIVATTYU- ES ANYAGMOZGATOGEP- GYARTO KISSZOVETKEZET
Publication of EP0380050A2 publication Critical patent/EP0380050A2/fr
Publication of EP0380050A3 publication Critical patent/EP0380050A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member

Definitions

  • the invention relates to an arrangement which can be used in the case of the stator of eccentric spiral pumps, which is made of elastomeric material and has a threaded profile on its inner surface with two or more gates.
  • the stator of eccentric spiral pumps is produced in different types, corresponding to the expanding uses.
  • the goal is that an appropriate training can meet several requirements, which can be manufactured in a simple manner, with cheap means and therefore guarantees economical production and use accomplishes.
  • the previously known solutions have been worked out to achieve this objective, which is partly being successfully solved. These solutions can be divided into two main groups, namely there are stators made of elastomeric material releasably attached in a metal sleeve, and there are stators made of elastomeric material permanently attached in the metal sleeve. Both groups also include re-enactment variants.
  • the advantage of the solutions belonging to the first group is the cheap manufacture and operation, because the metal sleeve as a part of the pump is a permanent component, and only the stator made of elastomeric material is replaced after wear.
  • stator made of elastomeric material is generally mechanically fastened on one side / at one end / in the metal sleeve, which in part allows the stator to rotate and in part when the open side protrudes into the pressure chamber of the pump , and the liquid penetrates between the stator and the metal sleeve, separates them from each other and reduces or eliminates the frictional connection between the stator and the metal sleeve.
  • stator is made of elastomer Material is made with the metal sleeve forming a unit and after consumption the expensive complete unit is replaced.
  • the metal sleeve is not part of the pump, but part of the stator.
  • the aim of the invention is to develop such a stator for eccentric spiral pumps, which is not connected to the metal sleeve, and yet is completely secured against rotation, its adjustment is still stable, and in which the pumped medium from the pressure chamber does not flow under the outer surface can.
  • the invention is based on the finding that the polygon shape also secures well against rotation, and at the same time one during adjustment uniform deformation can be achieved, and finally the flanges formed at the end of the stator in a corresponding form can prevent not only the longitudinal movement but also the seepage of the medium being pumped.
  • the invention is thus an arrangement of the stator of eccentric spiral pumps, the material of which is elastomeric and the inner surface of which has a threaded profile with two or more gates, and which according to the invention can be characterized in that the outer circumferential surface of the stator is a polygon surface, and the stator of a metal sleeve is encased, the inner lateral surface of which adapts to the outer lateral surface of the stator, and is cut open with at least one longitudinal slit.
  • the polygonal surface of the outer sheath of the stator is formed by sheath pieces of the same center angle and the same arc, and the hitting edge of the adjacent sheath pieces or the passage area formed between them is located as a whole between the common meeting plane of two sheath pieces and the center line of the stator is.
  • both are At the ends of the stator, such a flange is formed, the diameter of which is larger than that of the enveloping circle of the lateral surface, and the length of the metal sleeve is the same with the distance between the two flanges.
  • the flanges have an annular sealing profile which protrudes from their end face.
  • one or more clamping rings are formed on the outer surface of the metal sleeve on both sides of the slit, in which tangential bores are.
  • the metal sleeve with two slits is divided into two half parts and clamping surfaces are formed next to both slits.
  • Fig. 1 the arrangement of the stator is shown in half-section half-view.
  • the stator 1 with a thick line, which indicates this surrounding metal sleeve 2 - as if it were transparent - with a thin line.
  • the inner surface B of the stator 1 made of elastomeric material is a threaded profile with two gates, and the outer surface P is a polygon surface.
  • the lateral surface P is formed by six jacket pieces bent in this way, the central angle ⁇ and radius r of which are the same.
  • the distance t between the edge e arising when the casing pieces meet and the center line is less than the distance T between the contact plane S common to two adjacent casing pieces and the center line. It can be seen that this polygon surface is to a certain extent different from the polygon surface common in technical life, where more or less curved convex sections alternate.
  • the stator 1 is encased by such a metal sleeve 2, the inner lateral surface of which completely adapts to the outer lateral surface P of the stator 1.
  • the metal sleeve 2 is divided into two half parts by means of two longitudinal slits 3 and 4.
  • a clamping ring 5 is formed, which extends along the entire length of the metal sleeve 2. Bores 6 are arranged tangentially in the clamping rings 5.
  • a flange 7 is formed at each of the two ends of the stator 1.
  • the diameter D of the flanges 7 is larger than the diameter d of the enveloping circle of the circumferential surface P.
  • An annular sealing profile 9 protrudes from the end face 8 of the flanges 7. This is similar to the half part of an "O" ring
  • the length l of the stator 1 between the flanges 7 and the length L of the metal sleeve are the same.
  • the arrangement according to the invention can be used as follows.
  • the stator 1 can then be installed in the eccentric spiral pump.
  • the sealing profile 9 located on the flanges 7, as indicated by its shape, will behave as an "O" ring which is used for sealing end faces.
  • This sealing profile 9 prevents the pumped medium from bypassing the flange 7 from the pressure side and thus getting between the stator 1 and the metal sleeve 2. It is evident that the length L of the metal sleeve 2 should therefore be the same as the length l of the stator 1 so that it can give the flanges 7 appropriate support.
  • the form chosen by us also has another task, namely when adjusting the stator 1.
  • the inner surface B of the stator 1 wears out heavily during operation. This was previously compensated for by the deformation of the stator 1, but this was not complete due to the uneven deformation and led to uneven wear.
  • the metal sleeve 2 can also be manufactured with a single, or even with more than two slits. This is primarily influenced by the material and the shape of the stator 1, and on the other hand by the arrangement in the pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP19900101298 1989-01-23 1990-01-23 Disposition du stator pour des pompes excentriques à spirale Withdrawn EP0380050A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU25189 1989-01-23
HU25189A HU204116B (en) 1989-01-23 1989-01-23 Arrangement for the standing part of eccentric worm pump

Publications (2)

Publication Number Publication Date
EP0380050A2 true EP0380050A2 (fr) 1990-08-01
EP0380050A3 EP0380050A3 (fr) 1991-02-20

Family

ID=10948732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900101298 Withdrawn EP0380050A3 (fr) 1989-01-23 1990-01-23 Disposition du stator pour des pompes excentriques à spirale

Country Status (4)

Country Link
EP (1) EP0380050A3 (fr)
CS (1) CS23090A2 (fr)
DD (1) DD294067A5 (fr)
HU (1) HU204116B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318416A (en) * 1991-05-22 1994-06-07 Netzsch-Mohnopumpen Gmbh Casing of an eccentric worm pump designed to burst at preselected pressure
EP0612922A1 (fr) * 1993-02-22 1994-08-31 Mono Pumps Limited Pompe ou moteur à vis commande par excentrique
DE102006021897A1 (de) * 2006-05-11 2007-11-15 Netzsch-Mohnopumpen Gmbh Statormantel für Exzenterschneckenpumpe
FR2948424A1 (fr) * 2009-07-23 2011-01-28 Pcm Pompe a cavites progressives et dispositif de pompage associe
EP2660471A1 (fr) * 2010-12-27 2013-11-06 Heishin Ltd. Pompe à vis excentrée uniaxiale

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1163148B (de) * 1959-06-11 1964-02-13 Seeberger K G Maschinen & Gera Schneckenpumpe
DE2930068A1 (de) * 1979-07-25 1981-03-19 Kurt-Joachim 3000 Hannover Ganz Exzenter-schnecken-verdraengungspumpe
DE2937403A1 (de) * 1979-09-15 1981-04-02 Gummi-Jäger KG GmbH & Cie, 3000 Hannover Nachstellbarer stator fuer exzenterschneckenpumpen
EP0292594A1 (fr) * 1987-05-27 1988-11-30 FOREG Aktiengesellschaft Stator pour pompe moineau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1163148B (de) * 1959-06-11 1964-02-13 Seeberger K G Maschinen & Gera Schneckenpumpe
DE2930068A1 (de) * 1979-07-25 1981-03-19 Kurt-Joachim 3000 Hannover Ganz Exzenter-schnecken-verdraengungspumpe
DE2937403A1 (de) * 1979-09-15 1981-04-02 Gummi-Jäger KG GmbH & Cie, 3000 Hannover Nachstellbarer stator fuer exzenterschneckenpumpen
EP0292594A1 (fr) * 1987-05-27 1988-11-30 FOREG Aktiengesellschaft Stator pour pompe moineau

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5318416A (en) * 1991-05-22 1994-06-07 Netzsch-Mohnopumpen Gmbh Casing of an eccentric worm pump designed to burst at preselected pressure
EP0612922A1 (fr) * 1993-02-22 1994-08-31 Mono Pumps Limited Pompe ou moteur à vis commande par excentrique
US5474432A (en) * 1993-02-22 1995-12-12 Mono Pumps Limited Progressive cavity pump or motors
DE102006021897A1 (de) * 2006-05-11 2007-11-15 Netzsch-Mohnopumpen Gmbh Statormantel für Exzenterschneckenpumpe
DE102006021897B4 (de) * 2006-05-11 2009-11-19 Netzsch-Mohnopumpen Gmbh Statormantel für Exzenterschneckenpumpen
FR2948424A1 (fr) * 2009-07-23 2011-01-28 Pcm Pompe a cavites progressives et dispositif de pompage associe
EP2660471A1 (fr) * 2010-12-27 2013-11-06 Heishin Ltd. Pompe à vis excentrée uniaxiale
EP2660471A4 (fr) * 2010-12-27 2015-01-21 Heishin Ltd Pompe à vis excentrée uniaxiale

Also Published As

Publication number Publication date
EP0380050A3 (fr) 1991-02-20
HU204116B (en) 1991-11-28
HUT53197A (en) 1990-09-28
DD294067A5 (de) 1991-09-19
CS23090A2 (en) 1991-08-13

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