GB2081812A - Stationary part for single- spindle screw pump - Google Patents
Stationary part for single- spindle screw pump Download PDFInfo
- Publication number
- GB2081812A GB2081812A GB8121797A GB8121797A GB2081812A GB 2081812 A GB2081812 A GB 2081812A GB 8121797 A GB8121797 A GB 8121797A GB 8121797 A GB8121797 A GB 8121797A GB 2081812 A GB2081812 A GB 2081812A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stationary part
- sleeve
- pump
- segments
- stationary
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229920001967 Metal rubber Polymers 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The stationary part has a sleeve segment, the outer part of which is produced from the combination of metal-elastomer and the strength of which allows certain rigidity, thus fitting the stationary part of suitable length assembled from segments into metal tube, optional counter-pressure can be brought about. The preferred embodiment of the stationary part according to the invention is characterized in that differential pump controlled with pressure in the pressure chamber of the pump is arranged in the pitch follower hollow part of the sleeve segment, by the use of which the overpressure necessary for correction can be automatically brought about. <IMAGE>
Description
SPECIFICATION
Stationary part for single-spindle screw pump
The invention relates to the stationary part of single-spindle screw pump, for improvement of the presently known stationary parts.
There are such screw pumps, or stationary parts of screw pumps, where the stationary parts are built into the screw pump and these parts have hollow sleeve segments with threaded profile fitted to each other. The interior of all sleeve segments is provided with elastic lining. The linings extend to the side plates of the sleeve segments covering them at least in part. The lining parts extending to the side plates have shaped packing profiles formed from their own material.
These sleeve segments are iocated in relation to each other with locating drifts corresponding to the pitch of the internal hollow threaded profile.
This technical solution offers the advantage to assemble stationary part of optional length from the sleeve segments, as from construction units.
Its main advantage is that it can be assembled from prefabricated, mass produced components as many as necessary to form chambers from the mentioned threaded profiles in sufficient number for the delivery head of the pump. However the earlier mentioned solution does not offer adequate assurance for reducing the leakage, nor can be the wear -- arising during operation -- adequately corrected.
The invention is aimed at the realization of such stationary part for single-spindle screw pump, at which the previously mentioned drawbacks are eliminated, thus further possibilities are ensured for reducing the ieakage, and to correct the wear arising during operation.
The objective is attained by such stationary part, which has a sleeve segment, the outside of which is made with metal -- elastomer combination and its strength allows certain rigidity, thus fitting the stationary part of suitable length produced from segments into metal sleeve, optional counter-pressure can be brought about. A preferred embodiment of the stationary part according to the invention is characterized in that a differential pump controlled by the pressure in the pressure chamber of the pump is arranged in the pitch follower hollow part of the sleeve segment, whereby the overpressure necessary for correction can be automatically brought about.
The technical solution according to the invention is described by way of a preferred embodiment with the aid of enclosed drawing, in which:
Figure 1.: Front view of sleeve segment of the stationary part
Figure 2.: Section of the developed view shown in
Figure 1.
The external surface of sleeve segment 1 is circular, but may be any form different from the circle. The internal cavity of the sleeve segment 1 contains threaded profile 2, provided with linings 3 of elastic material. The elastic lining 3 covers the internal profile with uniform wall thickness characteristic to the size of the pump. Said lining is formed in such a way, that adapted for sealing purpose are applied at the edges of the threaded profile 2.
The stationary part of suitable length assembled from sleeve segments can be fitted into metal tube and optional pressure can be brought about in the pitch follower cavity of said sleeve segments, as a result of which the deformed threaded profile corrects the worn material deficiencies.
1. Stationary part of single-spindle screw pump with hollow sleeve segments fitted to each other and having threaded profile, elastic lining therein and with shaped sealing profiles made of the own material of the linings, characterized in that the external framework of the sleeve segments /1/ is made of elastomer material and the stationary part is arranged in metal tube.
2. Stationary part as claimed in claim 1., characterized in that the sleeve segment /1/ is assembled from the combination of metal-elastomer material.
3. Stationary part as claimed in any of claims 1 and 2., characterized in that the pitch follower hollow part of the sleeve segment /1/ is attached to differential pump connected with pressure chamber of the pump.
4. Pump stator, substantially as herein described with reference to and as shown in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. Stationary part of single-spindle screw pump with hollow sleeve segments fitted to each other and having threaded profile, elastic lining therein and with shaped sealing profiles made of the own material of the linings, characterized in that the external framework of the sleeve segments /1/ is made of elastomer material and the stationary part is arranged in metal tube.
2. Stationary part as claimed in claim 1., characterized in that the sleeve segment /1/ is assembled from the combination of metal-elastomer material.
3. Stationary part as claimed in any of claims 1 and 2., characterized in that the pitch follower hollow part of the sleeve segment /1/ is attached to differential pump connected with pressure chamber of the pump.
4. Pump stator, substantially as herein described with reference to and as shown in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU801785A HU181561B (en) | 1980-07-17 | 1980-07-17 | Stator for single-spindle screw pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2081812A true GB2081812A (en) | 1982-02-24 |
| GB2081812B GB2081812B (en) | 1984-08-08 |
Family
ID=10956188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8121797A Expired GB2081812B (en) | 1980-07-17 | 1981-07-15 | Stationary part for single-spindle screw pump |
Country Status (7)
| Country | Link |
|---|---|
| CS (1) | CS238373B2 (en) |
| DD (1) | DD202924A5 (en) |
| DE (1) | DE3126988A1 (en) |
| FR (1) | FR2487017B1 (en) |
| GB (1) | GB2081812B (en) |
| HU (1) | HU181561B (en) |
| IT (1) | IT1167465B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5171138A (en) * | 1990-12-20 | 1992-12-15 | Drilex Systems, Inc. | Composite stator construction for downhole drilling motors |
| WO2006015574A1 (en) * | 2004-08-07 | 2006-02-16 | Netzsch-Mohnopumpen Gmbh | Eccentric screw pump having conical sealing surfaces |
| US7083401B2 (en) | 2003-10-27 | 2006-08-01 | Dyna-Drill Technologies, Inc. | Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
| US7407372B2 (en) * | 2004-05-14 | 2008-08-05 | Robbins & Myers Energy Systems L.P. | Progressing cavity pump or motor |
| US7517202B2 (en) | 2005-01-12 | 2009-04-14 | Smith International, Inc. | Multiple elastomer layer progressing cavity stators |
| US9393648B2 (en) | 2010-03-30 | 2016-07-19 | Smith International Inc. | Undercut stator for a positive displacment motor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3710930A1 (en) * | 1987-04-01 | 1988-10-20 | Gd Anker Gmbh & Co Kg | Eccentric spiral pump |
| DE3820483A1 (en) * | 1988-06-16 | 1989-12-21 | Stihl Maschf Andreas | PUMP FOR VISCOSE LIQUIDS, ESPECIALLY LUBRICATING OIL PUMP |
| AT401089B (en) * | 1988-09-30 | 1996-06-25 | Gd Anker Gruber Duebel Anker G | Eccentric screw pump |
| GB2244517B (en) * | 1990-05-31 | 1994-05-04 | Mono Pumps Ltd | Helical gear pump and stator |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2621605A (en) * | 1945-10-12 | 1952-12-16 | Clayton Mark & Company | Pump |
| GB800154A (en) * | 1955-09-30 | 1958-08-20 | Ahmad Aziz | Improvements in or relating to rotary pumps or motors |
| DE1553199C3 (en) * | 1966-03-15 | 1974-03-07 | Karl Dipl.-Ing. 7024 Bernhausen Schlecht | Adjustable stator for an eccentric screw pump |
| DE1653910A1 (en) * | 1967-06-09 | 1971-10-14 | Seidl Wilhelm Dipl Ing | Device for axially lining up several stators in eccentric screw pumps |
| DE2161116C3 (en) * | 1971-12-09 | 1979-09-06 | Moeller, Heinrich, 4962 Obernkirchen | Housing insert for eccentric screw pumps |
| DE7146795U (en) * | 1971-12-13 | 1972-03-23 | Vibrastop Gummimetallverbindungen Kaechele W | ADJUSTABLE STATOR |
| US3912426A (en) * | 1974-01-15 | 1975-10-14 | Smith International | Segmented stator for progressive cavity transducer |
| DE2408186A1 (en) * | 1974-02-20 | 1975-08-21 | Lonza Werke Gmbh | Eccentric pump with screw rotor and stator - has cavities between stator and housing |
| DE2512792A1 (en) * | 1975-03-22 | 1976-09-30 | Gummi Jaeger Kg Gmbh & Cie | Cover of eccentric worm pump stator - is of rubber or elastomer and of greater Shore hardness than stator |
| FR2349729A1 (en) * | 1976-04-27 | 1977-11-25 | Tiraspolsky Wladimir | Hydraulic machine with helical rotor - has internal and external helices assembled from separately machined longitudinal sections |
| DE2619751A1 (en) * | 1976-05-05 | 1977-11-17 | Mathis Fertigputz | Eccentric worm pump stator housing maintained under tension - has adjustable circumference and is covered with pressure transmitting vulcanised material |
| DE2817280A1 (en) * | 1978-04-20 | 1979-10-25 | Streicher Foerdertech | STATOR FOR ECCENTRIC SCREW PUMPS |
-
1980
- 1980-07-17 HU HU801785A patent/HU181561B/en unknown
-
1981
- 1981-07-08 DE DE19813126988 patent/DE3126988A1/en active Granted
- 1981-07-09 IT IT22827/81A patent/IT1167465B/en active
- 1981-07-13 CS CS815350A patent/CS238373B2/en unknown
- 1981-07-14 DD DD81231757A patent/DD202924A5/en not_active IP Right Cessation
- 1981-07-15 GB GB8121797A patent/GB2081812B/en not_active Expired
- 1981-07-17 FR FR8114017A patent/FR2487017B1/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5171138A (en) * | 1990-12-20 | 1992-12-15 | Drilex Systems, Inc. | Composite stator construction for downhole drilling motors |
| US7083401B2 (en) | 2003-10-27 | 2006-08-01 | Dyna-Drill Technologies, Inc. | Asymmetric contouring of elastomer liner on lobes in a Moineau style power section stator |
| US7407372B2 (en) * | 2004-05-14 | 2008-08-05 | Robbins & Myers Energy Systems L.P. | Progressing cavity pump or motor |
| WO2006015574A1 (en) * | 2004-08-07 | 2006-02-16 | Netzsch-Mohnopumpen Gmbh | Eccentric screw pump having conical sealing surfaces |
| US7618246B2 (en) | 2004-08-07 | 2009-11-17 | Netzsch-Mohnopumpen Gmbh | Eccentric screw pump having conical sealing surfaces |
| US7517202B2 (en) | 2005-01-12 | 2009-04-14 | Smith International, Inc. | Multiple elastomer layer progressing cavity stators |
| US9393648B2 (en) | 2010-03-30 | 2016-07-19 | Smith International Inc. | Undercut stator for a positive displacment motor |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2487017A1 (en) | 1982-01-22 |
| DE3126988A1 (en) | 1982-02-25 |
| IT8122827A0 (en) | 1981-07-09 |
| CS238373B2 (en) | 1985-11-13 |
| FR2487017B1 (en) | 1987-12-24 |
| HU181561B (en) | 1983-10-28 |
| GB2081812B (en) | 1984-08-08 |
| IT1167465B (en) | 1987-05-13 |
| DE3126988C2 (en) | 1987-06-25 |
| DD202924A5 (en) | 1983-10-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920715 |