GB611416A - Improvements in or relating to rotary air pumps - Google Patents
Improvements in or relating to rotary air pumpsInfo
- Publication number
- GB611416A GB611416A GB3203345A GB3203345A GB611416A GB 611416 A GB611416 A GB 611416A GB 3203345 A GB3203345 A GB 3203345A GB 3203345 A GB3203345 A GB 3203345A GB 611416 A GB611416 A GB 611416A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- rotor
- container
- filter
- vanes
- 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
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
-
- 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)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
611,416. Rotary pumps; screw fans; substitutes for stuffing-boxes. BEST, C., and MOLINS MACHINE CO., Ltd. Nov. 27, 1945, No. 32033. [Classes 110 (i), 110 (ii) and 122 (v)] [Also in Group I] A rotary suction pump of the sliding vane-type in which liquid is employed to effect a seal and act as a lubricant comprises a water container having an outlet leading to the atmosphere and having passages for water leading from the container to apertures between the bearings and the rotor, the apertures having a close diametrical clearance with respect to parts rotating with the rotor so that water can filter into the pump chamber. The water container 13 communicates by means of passages 16, 17, Fig. 2, with spaces 12, Fig. 1, from which water flows through a close clearance between the spaces and the ends of the rotor to the pump chamber to provide sealing and lubrication. The clearance is about .002 inches on the diameter. Holes 18 are provided in the rotor to feed water to the vanes. Air is drawn in through a filter 59 and a sump 30, and a mixture of air and water is expelled into the container 13 by way of a tube 19 having downwardly directed holes 21. The air escapes to the atmosphere by way of a baffle plate 26, a non-return valve 25 and a diffuser 28. The latter prevents the escape of globules of water and preferably consists of knitted fabric. Noise due to pulsations is reduced by the presence of a volume of air above the level of the water in the container 13 and by the use of the valve 25 which prevents the pulsating return of air from the atmosphere. There may be a series of baffle plates 26. A non-return valve 31 may be fitted at the intake, and there may be baffling 70 to assist in keeping water out of the suction line. A lid 14, held in position by a clamp 15, allows the container to be refilled. A filter 40 may be provided. The height of water in the container 13 is shown by a gauge having a window 45 of transparent material such as that sold under the Registered Trade Mark " Perspex," provided on its inner face with a series of prismatic .grooves 46 which prevents the reflection of light and gives the water a dark appearance. A screen 47, preferably black in colour, prevents water from splashing on the window. The rotor vanes 9 are stepped to overlap one another and are pressed outwards by springs 10. Segmental packing pieces 11 are provided. The vanes and packing pieces are preferably of artificial graphite. The graphite may be reinforced by a steel framework around which it is moulded or inserted. To reduce relative motion between the two vanes the chamber bore may consist of two semi-circular arcs joined by two straight surfaces. A singlepiece diametrical vane may be used, in combination with a suitably shaped chamber wall. The rotor may be of stainless steel and the bush 3 may be of phosphor bronze. The outer race of one of the rotor shaft bearings is clamped in a bush 34 which is provided with an external thread engaging a threaded portion of the pump casing, whereby the longitudinal position of the rotor may be adjusted. Glands of the graphite ring type are provided at each end of the rotor shaft, sealing between each graphite ring 36 and the shaft being provided by a rubber washer 39. The glands may be of the kind described in Specification 611,503. Holes 44 are provided, through which water can drip, to indicate failure of a gland. Cooling is provided by fins 55 and by fan blades 56 fitted within the driving pulley 57. A modified filling arrangement for the water container comprises a funnel 50, Fig. 3, provided with a filter consisting of a porous cylindrical pot 54 of sintered bronze or other metal. To draw the water through the filter, the pipe leading therefrom is connected to the suction side of the pump, e.g. to the sump 30. A cock 53 is connected to the clamp 52 by a spindle 55 so that it is opened when the clamp is opened. Alternatively, the lid 51 may itself be pivoted about the spindle 55. According to the Provisional Specification, the pump chamber may be provided with a flexible liner which is distorted to the required non-circular shape by means of a system of wedges or screws.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3203345A GB611416A (en) | 1945-11-27 | 1945-11-27 | Improvements in or relating to rotary air pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3203345A GB611416A (en) | 1945-11-27 | 1945-11-27 | Improvements in or relating to rotary air pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB611416A true GB611416A (en) | 1948-10-29 |
Family
ID=10332062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3203345A Expired GB611416A (en) | 1945-11-27 | 1945-11-27 | Improvements in or relating to rotary air pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB611416A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1428122B1 (en) * | 1963-05-20 | 1970-09-03 | Louis Hibon | Liquid separator for rotating air or gas suction pumps combined with a silencer |
GB2242936A (en) * | 1990-03-22 | 1991-10-16 | Hydrovane Compressor | Oil sealed rotary compressors |
CN102434460A (en) * | 2010-09-29 | 2012-05-02 | 王安大 | Water-sealed single-stage rotary vane vacuum pump |
-
1945
- 1945-11-27 GB GB3203345A patent/GB611416A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1428122B1 (en) * | 1963-05-20 | 1970-09-03 | Louis Hibon | Liquid separator for rotating air or gas suction pumps combined with a silencer |
GB2242936A (en) * | 1990-03-22 | 1991-10-16 | Hydrovane Compressor | Oil sealed rotary compressors |
CN102434460A (en) * | 2010-09-29 | 2012-05-02 | 王安大 | Water-sealed single-stage rotary vane vacuum pump |
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