GB701507A - Improvements in or relating to pump and motor combinations - Google Patents
Improvements in or relating to pump and motor combinationsInfo
- Publication number
- GB701507A GB701507A GB2794849A GB2794849A GB701507A GB 701507 A GB701507 A GB 701507A GB 2794849 A GB2794849 A GB 2794849A GB 2794849 A GB2794849 A GB 2794849A GB 701507 A GB701507 A GB 701507A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- air
- motor
- water
- cock
- 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
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
701,507. Centrifugal pumps. HAYWARD TYLER & CO., Ltd., and IVANHOFF, A. Jan. 31, 1951 [Nov. 1, 1949], No. 27948/49. Class 110 (1). [Also in Group XXXV] In a motor-driven pump in which the pump and motor are housed in virtually a single casing, the level of the casing in relation to the external system through which the pump circulates liquid is such that, when an air outlet giving egress from the upper end of the casing is opened, any air in the casing will escape and the casing will be filled with liquid from the external system. The motor-driven pump described in Specifications 701,509, 701,510 and 701,511, comprising a motor casing 1 joined to a pump casing 2 by a neck portion 3, circulates water between the water drum 4 and the water tubes 5 of a boiler. Before use, a cock 16 is opened, and water from the boiler fills the casings 1, 2, 3, the air being expelled through an outlet 15 which is situated a distance h below the water level 17. To prevent damage to the motor windings, the water is cooled in a cooler 9 before entering the casing 1, the circulation being maintained by an auxiliary impeller at the top of the motor shaft. If air collects at the top of the casing 1, the circulation stops, and it becomes necessary to repeat the, air-expelling, operation. Warning is given by a thermometer 21a, which may be arranged to actuate an audible device. To prevent the rate of air release from becoming so high that hot water passes directly into the casing 1, the flow is restricted by a fine bore tube 19. A porous metal plug between the cock 16 and the tube 19 prevents the latter from being clogged by foreign matter. Alternatively, an additional cock, separated from the first cock by a length of pipe, may be provided, the two cocks being operated in succession so that air; first enters and is closed off in the length of pipe and is then released therefrom. The pipe may be of oval crosssection to render it expansible. The direction of now through. the coil 9 may be opposite to that shown. The cock 16 may be situated at the highest point of the cooling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2794849A GB701507A (en) | 1949-11-01 | 1949-11-01 | Improvements in or relating to pump and motor combinations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2794849A GB701507A (en) | 1949-11-01 | 1949-11-01 | Improvements in or relating to pump and motor combinations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB701507A true GB701507A (en) | 1953-12-30 |
Family
ID=10267853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2794849A Expired GB701507A (en) | 1949-11-01 | 1949-11-01 | Improvements in or relating to pump and motor combinations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB701507A (en) |
-
1949
- 1949-11-01 GB GB2794849A patent/GB701507A/en not_active Expired
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