GB936679A - Improvements in or relating to screw pumps - Google Patents
Improvements in or relating to screw pumpsInfo
- Publication number
- GB936679A GB936679A GB1425560A GB1425560A GB936679A GB 936679 A GB936679 A GB 936679A GB 1425560 A GB1425560 A GB 1425560A GB 1425560 A GB1425560 A GB 1425560A GB 936679 A GB936679 A GB 936679A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sump
- pump
- piston
- clearance
- liquid
- 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.)
- Expired
Links
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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/04—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps
Abstract
936,679. Meshing screw pumps. PNEUMATIKUS ES HIDRAULIKUS GEPEK GYARA. April 22, 1960, No. 14255/60. Class 110 (2). In a reversible intermeshing screw pump for liquids the driving spindle 3 has a load relief piston 5, one annular face G 1 of which communicates with a first sump N 1 in the pump, while a second annular face G 2 bounds a load relief space R, connected by a duct C 1 in the stator to a second sump P 1 , and also through a clearance r, a a space B and a non- return valve S to the sump N 1 . In operation, when the flow is to the left in Fig. 1, the piston face G 1 compensates for the axial load on the spindle 3 and any liquid lost through a piston clearance h is returned to the sump P 1 through the duct C 1 . When the flow is reversed, the piston face G 2 compensates for the axial load by means of pressurized liquid from the sump P 1 , and any liquid passing through the clearance r is returned to the first sump through the valve S to relieve a seal V on the spindle 3 of pressure. In Fig. 3, the pump is incorporated in a liquid rectifier having non-return valves J, K, L, M such that the pump can be operated in either direction of rotation while maintaining a constant direction of flow from a suction port Sz to a pressure port Ny, openings N 2 , P 2 being connected to the sumps N 1 , P 1 respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1425560A GB936679A (en) | 1960-04-22 | 1960-04-22 | Improvements in or relating to screw pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1425560A GB936679A (en) | 1960-04-22 | 1960-04-22 | Improvements in or relating to screw pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB936679A true GB936679A (en) | 1963-09-11 |
Family
ID=10037842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1425560A Expired GB936679A (en) | 1960-04-22 | 1960-04-22 | Improvements in or relating to screw pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB936679A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4131400A (en) * | 1976-04-27 | 1978-12-26 | Aktiebolaget Imo-Industri | Hydraulic rotary screw machine with axial balancing piston |
EP0247947A1 (en) * | 1986-05-29 | 1987-12-02 | Alsthom | One-direction pumping apparatus with a reversible pump |
WO2004097222A1 (en) * | 2003-04-23 | 2004-11-11 | Emile Kadoche | Reversible screw pump |
-
1960
- 1960-04-22 GB GB1425560A patent/GB936679A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4131400A (en) * | 1976-04-27 | 1978-12-26 | Aktiebolaget Imo-Industri | Hydraulic rotary screw machine with axial balancing piston |
EP0247947A1 (en) * | 1986-05-29 | 1987-12-02 | Alsthom | One-direction pumping apparatus with a reversible pump |
FR2599435A1 (en) * | 1986-05-29 | 1987-12-04 | Alsthom | UNIDIRECTIONAL PUMPING DEVICE WITH REVERSIBLE PUMP. |
WO2004097222A1 (en) * | 2003-04-23 | 2004-11-11 | Emile Kadoche | Reversible screw pump |
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