GB341324A - Improvements in or relating to rotary pumps - Google Patents
Improvements in or relating to rotary pumpsInfo
- Publication number
- GB341324A GB341324A GB630030A GB630030A GB341324A GB 341324 A GB341324 A GB 341324A GB 630030 A GB630030 A GB 630030A GB 630030 A GB630030 A GB 630030A GB 341324 A GB341324 A GB 341324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- projections
- rotor
- per cent
- valve
- recesses
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/123—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
341,324. Rotary pumps. ROWLANDS, J. H., Elmwood, Saundersfoot, and THOMAS, G., Hillside, Begelly, both in Pembrokeshire. Feb. 25, 1930, No. 6300. [Class 110 (ii).] Movable-abutment type.-A rotary pump of the Roots' blower type has two rotors 11, 12, each having two projections 18, 19, and two recesses 20, 21 into which the projections make sliding contact during operation. The leading edges of the projections on one rotor are convex and those on the other rotor, concave. Rolling contact between the two cylindrical rotors 11, 12 is maintained by their being driven by gear wheels. A delivery valve 25 is hinged at 26 and has a secondary valve 28 hinged at 29. Valve 25 has an arm 30 which bears on a spring 31. In a three-stage pump each rotor 11, 12 has an annular tongue on each of its lateral faces which is a running fit in a groove, to prevent leakage between the stages. Fluid trapped in the recesses can escape by way of holes 36. Lubrication is effected through oilways 35. The dimensions of the projections 18, 19 based on the radial depth of the pumping space between rotor 11 and the casing 15 are given, the distance AB in Fig. 1 being 125 per cent, BL 25 per cent, and CA<1> 25 per cent. Projections 18 are larger than projections 19.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB630030A GB341324A (en) | 1930-02-25 | 1930-02-25 | Improvements in or relating to rotary pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB630030A GB341324A (en) | 1930-02-25 | 1930-02-25 | Improvements in or relating to rotary pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB341324A true GB341324A (en) | 1931-01-15 |
Family
ID=9811982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB630030A Expired GB341324A (en) | 1930-02-25 | 1930-02-25 | Improvements in or relating to rotary pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB341324A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2724340A (en) * | 1949-05-05 | 1955-11-22 | British Internal Combust Eng | Rotary pump |
US3472445A (en) * | 1968-04-08 | 1969-10-14 | Arthur E Brown | Rotary positive displacement machines |
US3620655A (en) * | 1969-06-18 | 1971-11-16 | Atlas Copco Ab | Balanced rotor machine |
FR2497881A1 (en) * | 1981-01-13 | 1982-07-16 | Saouma Elie | Positive displacement hydraulic gear pump - has male and female interlocking rotors with one or two engaging teeth |
-
1930
- 1930-02-25 GB GB630030A patent/GB341324A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2724340A (en) * | 1949-05-05 | 1955-11-22 | British Internal Combust Eng | Rotary pump |
US3472445A (en) * | 1968-04-08 | 1969-10-14 | Arthur E Brown | Rotary positive displacement machines |
US3620655A (en) * | 1969-06-18 | 1971-11-16 | Atlas Copco Ab | Balanced rotor machine |
FR2497881A1 (en) * | 1981-01-13 | 1982-07-16 | Saouma Elie | Positive displacement hydraulic gear pump - has male and female interlocking rotors with one or two engaging teeth |
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