GB691425A - Improvements in or relating to two stage liquid-ring air-pumps - Google Patents
Improvements in or relating to two stage liquid-ring air-pumpsInfo
- Publication number
- GB691425A GB691425A GB3037/51A GB303751A GB691425A GB 691425 A GB691425 A GB 691425A GB 3037/51 A GB3037/51 A GB 3037/51A GB 303751 A GB303751 A GB 303751A GB 691425 A GB691425 A GB 691425A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- port
- pump
- liquid
- working
- 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
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
- F04C19/004—Details concerning the operating liquid, e.g. nature, separation, cooling, cleaning, control of the supply
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Non-Positive Displacement Air Blowers (AREA)
Abstract
691,425. Centrifugal pumps. SIEMEN, O., and HINSCH, J. Feb. 7, 1951 [June 3, 1950], No. 3037/51. Class 110(i) In a liquid-ring air pump having two series-connected stages of different displacements, so much liquid is drawn from the second stage 2 through an auxiliary port 7 that it is put out of action when the pump is working at low vacuum, so that only the first stage 1 is operative. The air enters the pump through a port 3 and leaves it through a port 6, being transferred from stage 1 to stage 2 through ports 4 and 5. When the pump is working at high vacuum, sufficient liquid passes from stage 1 to stage 2 compared with the amount passing out through the port 7 to maintain the liquid ring of stage 2. The flow through port 7 may be adjusted by a throttling valve. Port 7 may be situated at the periphery of the casing 10. The two stages may be arranged in series around the periphery of a common impeller. It is stated to be known to provide by-pass valves whereby the second stage is partially by-passed when the pump is working at low vacuum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH691425X | 1950-06-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB691425A true GB691425A (en) | 1953-05-13 |
Family
ID=4529268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3037/51A Expired GB691425A (en) | 1950-06-03 | 1951-02-07 | Improvements in or relating to two stage liquid-ring air-pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB691425A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058689B (en) * | 1954-02-04 | 1959-06-04 | New York Air Brake Co | Two-stage vacuum pump based on the rotary piston principle |
| EP0033726A4 (en) * | 1979-08-09 | 1981-06-23 | Nash Engineering Co | Two stage liquid ring pump. |
| US4795315A (en) * | 1987-01-08 | 1989-01-03 | The Nash Engineering Company | Two-stage liquid ring pump |
| EP0645538A1 (en) * | 1993-09-24 | 1995-03-29 | Graham Manufacturing Co., Inc. | Method and apparatus for selectively varying the flow rate of service liquid through a two stage liquid ring vacuum pump |
| US5899668A (en) * | 1997-01-30 | 1999-05-04 | The Nash Engineering Company | Two-stage liquid ring pumps having separate gas and liquid inlets to the second stage |
| CN104612972A (en) * | 2014-12-02 | 2015-05-13 | 扬州长江水泵有限公司 | Water-ring vacuum pump |
| CN109296533A (en) * | 2018-12-05 | 2019-02-01 | 威海天宇新材料科技有限公司 | Water-ring vacuum pump |
-
1951
- 1951-02-07 GB GB3037/51A patent/GB691425A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058689B (en) * | 1954-02-04 | 1959-06-04 | New York Air Brake Co | Two-stage vacuum pump based on the rotary piston principle |
| EP0033726A4 (en) * | 1979-08-09 | 1981-06-23 | Nash Engineering Co | Two stage liquid ring pump. |
| EP0033726A1 (en) * | 1979-08-09 | 1981-08-19 | Nash Engineering Co | Two stage liquid ring pump. |
| US4795315A (en) * | 1987-01-08 | 1989-01-03 | The Nash Engineering Company | Two-stage liquid ring pump |
| EP0645538A1 (en) * | 1993-09-24 | 1995-03-29 | Graham Manufacturing Co., Inc. | Method and apparatus for selectively varying the flow rate of service liquid through a two stage liquid ring vacuum pump |
| US5899668A (en) * | 1997-01-30 | 1999-05-04 | The Nash Engineering Company | Two-stage liquid ring pumps having separate gas and liquid inlets to the second stage |
| CN104612972A (en) * | 2014-12-02 | 2015-05-13 | 扬州长江水泵有限公司 | Water-ring vacuum pump |
| CN109296533A (en) * | 2018-12-05 | 2019-02-01 | 威海天宇新材料科技有限公司 | Water-ring vacuum pump |
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