GB810166A - Improvements in and relating to priming systems for centrifugal pumps - Google Patents
Improvements in and relating to priming systems for centrifugal pumpsInfo
- Publication number
- GB810166A GB810166A GB323557A GB323557A GB810166A GB 810166 A GB810166 A GB 810166A GB 323557 A GB323557 A GB 323557A GB 323557 A GB323557 A GB 323557A GB 810166 A GB810166 A GB 810166A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pump
- priming
- inlet
- centrifugal
- 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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
810,166. Centrifugal pumps; gear pumps. HATHAWAY Ltd., L. March 29, 1957 [Jan. 30, 1957], No. 3235/57. Classes 110 (1) and 110 (2). The inlet of a centrifugal pump is connected to the inlet of a priming pump through a non- return valve and a float-operated valve for preventing liquid from entering the priming pump, and a thrust-transmitting means is arranged between the valves so that when one valve is seated the other valve is held off its seat whereby to prevent the development of a pressure depression between them that would hold them undesirably against their seats. The priming pump is a gear pump 26 which draws gas from the inlet of a centrifugal pump (not shown) through a duct 24, a spring-loaded non-return valve 23, a float chamber 11 and a pair of parallel pipes 13, 14. The use of two pipes 13, 14 instead of one prevents air locks. The priming pump 26 is put into operation by pulling a knob 33 to bring a valve 32 into the position shown in which it restricts a by-pass 31 connecting the inlet and outlet of the pump 26. When the priming is completed, liquid enters the float chamber 11 and lifts a float 16 to close a needle valve 17. An extension 18 on the valve 17 then engages the non-return valve 23 to prevent both valves from being closed at the same time. The priming pump 26 is filled with lubricant which circulates through the pump and by-pass 31 in both positions of valve 32, to lubricate and seal the gear teeth. A vent 35 is provided for the gas drawn from the centrifugal pump during priming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB323557A GB810166A (en) | 1957-01-30 | 1957-01-30 | Improvements in and relating to priming systems for centrifugal pumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB323557A GB810166A (en) | 1957-01-30 | 1957-01-30 | Improvements in and relating to priming systems for centrifugal pumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB810166A true GB810166A (en) | 1959-03-11 |
Family
ID=9754495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB323557A Expired GB810166A (en) | 1957-01-30 | 1957-01-30 | Improvements in and relating to priming systems for centrifugal pumps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB810166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131817A (en) * | 1990-03-22 | 1992-07-21 | The Nash Engineering Company | Two-stage pumping system |
-
1957
- 1957-01-30 GB GB323557A patent/GB810166A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131817A (en) * | 1990-03-22 | 1992-07-21 | The Nash Engineering Company | Two-stage pumping system |
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