GB875444A - Improvements in or relating to rotary vacuum pumps - Google Patents
Improvements in or relating to rotary vacuum pumpsInfo
- Publication number
- GB875444A GB875444A GB428357A GB428357A GB875444A GB 875444 A GB875444 A GB 875444A GB 428357 A GB428357 A GB 428357A GB 428357 A GB428357 A GB 428357A GB 875444 A GB875444 A GB 875444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- groove
- oil
- spring
- supply
- relating
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/02—Liquid sealing for high-vacuum pumps or for compressors
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manipulator (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
875,444. Non-return valves. EDWARDS HIGH VACUUM Ltd. Jan. 28, 1958 [Feb. 7, 1957], No. 4283/57. Class 135. [Also in Group XXVI] A lift valve, Fig. 2, for controlling the supply of oil to a vacuum pump (see Group XXVI), comprises a resilient disc 20 and a metal backing plate 21 which are positioned by a spring 22 bearing against a clamping screw 23 and which serve to control the supply of oil from an inlet groove 18 to a concentric outlet groove 19. The screw 23 is provided with shoulders 24, 25 respectively serving as a downward stop and a clamp to position the disc 20 near its centre with a controlled amount of compression. The overflow from the groove 19 is fed to a reservoir 17. In a modification, Fig. 3, the spring 33 abuts a bridge-piece 34 and the groove 18 is replaced by a central recess 31.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB428357A GB875444A (en) | 1957-02-07 | 1957-02-07 | Improvements in or relating to rotary vacuum pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB428357A GB875444A (en) | 1957-02-07 | 1957-02-07 | Improvements in or relating to rotary vacuum pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875444A true GB875444A (en) | 1961-08-23 |
Family
ID=9774210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB428357A Expired GB875444A (en) | 1957-02-07 | 1957-02-07 | Improvements in or relating to rotary vacuum pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084084A1 (en) * | 1981-12-17 | 1983-07-27 | Leybold-Heraeus GmbH | Oil-sealed vacuum pump |
-
1957
- 1957-02-07 GB GB428357A patent/GB875444A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0084084A1 (en) * | 1981-12-17 | 1983-07-27 | Leybold-Heraeus GmbH | Oil-sealed vacuum pump |
| US4525129A (en) * | 1981-12-17 | 1985-06-25 | Leybold-Heraeus Gmbh | Oil-sealed vacuum pump |
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