GB1246307A - Improvements in or relating to rotary positive displacement pumps - Google Patents
Improvements in or relating to rotary positive displacement pumpsInfo
- Publication number
- GB1246307A GB1246307A GB55483/68A GB5548368A GB1246307A GB 1246307 A GB1246307 A GB 1246307A GB 55483/68 A GB55483/68 A GB 55483/68A GB 5548368 A GB5548368 A GB 5548368A GB 1246307 A GB1246307 A GB 1246307A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- passage
- pressure
- rotary element
- housing
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0023—Axial sealings for working fluid
- F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
Abstract
1,246,307. Rotary pumps. BRONZAVIA. Nov.22, 1968 [Nov.28, 1967], No.55483/68. Heading F1F. A rotary positive displacement pump comprising a housing having at least one rotary element therein and two side-wall members within the housing, one on either side of the rotary element, with at least one movable axially with respect to the housing and the rotary element, wherein the movable side-wall member is subjected at least on part of its face adjacent the rotary element to a pressure close to delivery pressure and wherein means are provided to apply to at least part of the other face of the movable side-wall a regulated back-pressure whose magnitude determines the lateral clearance between the rotary element and the side-wall members. As described, the invention is applied to a gear pump having a pair of inter-meshing gears 30, Figs.1, 2 rotatably mounted in a two-port housing 1a, 1b with each disposed between a fixed side-wall member 24 and an axially-movable side-wall member 6 mounted in stepped bores 5, 4 in the housing parts. Each side-wall member 6 is stepped and with the bore 4 and a fixedly located ring member 7 defines annular chambers C 1 , C 2 , C 3 , communicating with the pumping chamber midway between the inlet 2 and outlet 3. The chamber C 1 through a passage 19, the chamber C 2 through a passage 16 and an arcuate recess 14 and the chamber C 3 through a passage 17 and the arcuate recess 14. The chamber C 2 also communicates with the passage 17 through a restricted passage 18 and the chamber C 3 with a chamber 12 connected to the pump inlet by a jet passage 11 the size of which determines the pressure in the chambers C 2 , C 3 and hence the clearance between the side-wall member 6 and the side face of the gear 30 which is sufficient to preclude excessive leakage without excessive friction. Arcuate recesses 13, 15 on either side of the recess 14 enables a pressure of constant magnitude to be maintained. The recesses 13, 14, 15 are matched by corresponding recesses 25, 26, 27 in the sidewall member 24 and inter-connected by balancing passages 31, 32 through the gears and spaces between the gear teeth. The passages 32 are connected by radial passages 33 to the roots of the gear teeth. In a modification, the jet passage 11 is replaced by a perforated spring-loaded washer located at that end of the chamber C 3 remote from the gear 30 which co-operates with an adjustable screw-threaded plug having a central bore through which leakage occurs to again determine the pressure in the chambers C 2 , C 3 .
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR129912 | 1967-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1246307A true GB1246307A (en) | 1971-09-15 |
Family
ID=8642362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB55483/68A Expired GB1246307A (en) | 1967-11-28 | 1968-11-22 | Improvements in or relating to rotary positive displacement pumps |
Country Status (4)
Country | Link |
---|---|
US (1) | US3558247A (en) |
DE (1) | DE1810868A1 (en) |
FR (1) | FR1553040A (en) |
GB (1) | GB1246307A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1362797A (en) * | 1970-11-28 | 1974-08-07 | Lucas Industries Ltd | Bearings for gear pumps |
US4231726A (en) * | 1978-06-22 | 1980-11-04 | Caterpillar Tractor Co. | Gear pump having fluid deaeration capability |
DE2846547A1 (en) * | 1978-10-26 | 1980-04-30 | Pierburg Luftfahrtgeraete | SELF-SEALING GEAR PUMP |
US4358258A (en) * | 1979-07-06 | 1982-11-09 | Fluid Energy Systems Corporation | High pressure gear pump or motor with axial retaining means and radial balancing means |
US4370110A (en) * | 1979-07-06 | 1983-01-25 | Fluid Energy Systems Corporation | High pressure gear pump or motor with axial retaining means in a housing cavity |
DE169307T1 (en) * | 1984-05-18 | 1986-07-24 | Nordson Corp., Amherst, Ohio | PUMP FOR HOT-MELT ADHESIVES WITH PERFORATING GEARS. |
US20230175503A1 (en) * | 2021-12-03 | 2023-06-08 | Hamilton Sundstrand Corporation | Spring retainer for gear pump bearing plate |
-
1967
- 1967-11-28 FR FR129912A patent/FR1553040A/fr not_active Expired
-
1968
- 1968-11-22 GB GB55483/68A patent/GB1246307A/en not_active Expired
- 1968-11-22 US US778114A patent/US3558247A/en not_active Expired - Lifetime
- 1968-11-26 DE DE19681810868 patent/DE1810868A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US3558247A (en) | 1971-01-26 |
DE1810868A1 (en) | 1969-08-21 |
FR1553040A (en) | 1969-01-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2624287A (en) | Gear pump | |
ES299815A1 (en) | Stack-up slipper pump with integral flow control valve | |
GB1304723A (en) | ||
GB1292825A (en) | A gear type hydraulic pump or motor | |
GB1246307A (en) | Improvements in or relating to rotary positive displacement pumps | |
US2505191A (en) | Pump-gear type with unloading | |
GB1206524A (en) | Hydraulic gear pumps and motors | |
GB1347611A (en) | Fluid pump | |
GB1425297A (en) | Hydraulic pump or motor | |
GB1148600A (en) | Improvements in and relating to internally meshing gear pumps | |
GB977315A (en) | Improvements in or relating to pumps or hydraulic motors of the gear type | |
GB1165465A (en) | Improvements in or relating to Rotary Power Steering Pumps | |
GB1372481A (en) | Gear pump | |
GB1298394A (en) | Rotary positive-displacement pump | |
IT1171521B (en) | Pump control and relief valve | |
GB1259389A (en) | ||
GB1243239A (en) | Improvements in and relating to hydraulic gear pumps | |
GB1246091A (en) | Rotary hydraulic-piston pumps and motors | |
GB1013263A (en) | Pressure loaded rotary hydraulic pump or motor | |
GB1127602A (en) | Improvements in or relating to gear pumps | |
GB1459553A (en) | Hydraulic mechanisms | |
GB1019287A (en) | Rotary pumps for liquids | |
GB1140268A (en) | Improvements in or relating to rotary fluid pumps | |
GB1075333A (en) | Improvements in gear pumps or motors of the internally-meshing type | |
US1639961A (en) | Self-metering rotary pump |