GB1422271A - Externally meshing gear pumps and motors - Google Patents
Externally meshing gear pumps and motorsInfo
- Publication number
- GB1422271A GB1422271A GB762673A GB762673A GB1422271A GB 1422271 A GB1422271 A GB 1422271A GB 762673 A GB762673 A GB 762673A GB 762673 A GB762673 A GB 762673A GB 1422271 A GB1422271 A GB 1422271A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- gears
- sealing
- recess
- portions
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Hydraulic Motors (AREA)
Abstract
1422271 Rotary positive-displacement machines SPERRY RAND CORP 16 Feb 1973 [17 Feb 1972] 7626/73 Heading F1F An externally-meshing gear pump has a unitary flexible sealing plate 26 of uniform thickness for sealing one side of the gears, the plate having a figure three slot 32 communicating with the outlet pressure and an opening 34 at the low pressure side of the point of mesh. This defines two annular sealing zones 30 connected to each other at the meshing point by a portion 38 and connected to the periphery 28 of the plate by respective bridges 40. The periphery 28 is clamped between ports of the pump housing and the bridges act as cantilevers so that the annular portions 30 can be urged towards their respective gears. The portions 30 have the same radius as the hub portions so as to not cover the gear teeth 12. A body portion, Fig. 2, on the side remote from the gears has a figure 3 recess 42 which extends inwardly to overlie at least partially, the recess having a circumferential elastomeric seal 44 held in position by a plate 46. The recess 42 communicates with the outlet pressure and urges the zones 30 towards the gears, this being opposed by pressure forces acting on the sealing side. Plate 26 is made of bi-metallic material such as a steel backing with bronze bearing material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US227225A US3876347A (en) | 1972-02-17 | 1972-02-17 | Gear pump or motor with unitary flexible end seal plate |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1422271A true GB1422271A (en) | 1976-01-21 |
Family
ID=22852270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB762673A Expired GB1422271A (en) | 1972-02-17 | 1973-02-16 | Externally meshing gear pumps and motors |
Country Status (8)
Country | Link |
---|---|
US (1) | US3876347A (en) |
JP (1) | JPS5148801B2 (en) |
AU (1) | AU470449B2 (en) |
CA (1) | CA979735A (en) |
FR (1) | FR2172686A5 (en) |
GB (1) | GB1422271A (en) |
IT (1) | IT976882B (en) |
SE (1) | SE389895B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112016015451B1 (en) * | 2014-01-03 | 2021-09-14 | Koninklijke Douwe Egberts B.V. | REPLACEABLE SUPPLY PACKAGE, DOSING, PUMP ASSEMBLY, BEVERAGE DISPENSING SYSTEM, AND METHOD FOR MANUFACTURING A NEW REPLACEABLE SUPPLY PACKAGE |
CN105631104B (en) * | 2015-12-24 | 2018-10-12 | 哈尔滨锅炉厂有限责任公司 | The manufacturing method of tooth form sealing plate |
CN106014975B (en) * | 2016-07-19 | 2018-02-27 | 江苏大学 | A kind of cantilevered twin-screw water jet propulsion pump |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2702509A (en) * | 1951-04-06 | 1955-02-22 | Air Equipment | Rotary pump |
US3213799A (en) * | 1962-12-26 | 1965-10-26 | Webster Electric Co Inc | Rotary pump or motor |
US3270680A (en) * | 1964-12-17 | 1966-09-06 | Kingston Products Corp | Pressure loaded gear pump |
US3213800A (en) * | 1965-05-04 | 1965-10-26 | Webster Electric Co Inc | Unitary wear plate and seal |
US3376824A (en) * | 1965-07-01 | 1968-04-09 | Turolla Marco | Gear pump |
-
1972
- 1972-02-17 US US227225A patent/US3876347A/en not_active Expired - Lifetime
-
1973
- 1973-01-11 AU AU50994/73A patent/AU470449B2/en not_active Expired
- 1973-01-15 IT IT47685/73A patent/IT976882B/en active
- 1973-01-17 CA CA161,439A patent/CA979735A/en not_active Expired
- 1973-02-13 FR FR7305072A patent/FR2172686A5/fr not_active Expired
- 1973-02-13 SE SE7302026A patent/SE389895B/en unknown
- 1973-02-16 GB GB762673A patent/GB1422271A/en not_active Expired
- 1973-02-16 JP JP48019137A patent/JPS5148801B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU470449B2 (en) | 1976-03-18 |
JPS4890002A (en) | 1973-11-24 |
DE2306540A1 (en) | 1973-08-30 |
SE389895B (en) | 1976-11-22 |
IT976882B (en) | 1974-09-10 |
DE2306540B2 (en) | 1976-01-15 |
CA979735A (en) | 1975-12-16 |
JPS5148801B2 (en) | 1976-12-23 |
AU5099473A (en) | 1974-07-11 |
US3876347A (en) | 1975-04-08 |
FR2172686A5 (en) | 1973-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |