GB797931A - Improvements in or relating to gaseous pressure operated pumps for liquids - Google Patents

Improvements in or relating to gaseous pressure operated pumps for liquids

Info

Publication number
GB797931A
GB797931A GB2212456A GB2212456A GB797931A GB 797931 A GB797931 A GB 797931A GB 2212456 A GB2212456 A GB 2212456A GB 2212456 A GB2212456 A GB 2212456A GB 797931 A GB797931 A GB 797931A
Authority
GB
United Kingdom
Prior art keywords
piston
pistons
valve
air pressure
subjected
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
Application number
GB2212456A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SKF AB filed Critical SKF AB
Priority to GB2212456A priority Critical patent/GB797931A/en
Publication of GB797931A publication Critical patent/GB797931A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
    • F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
    • F04B9/137—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers the pumping members not being mechanically connected to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/02—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means
    • F01L25/04—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by fluid means by working-fluid of machine or engine, e.g. free-piston machine
    • F01L25/06—Arrangements with main and auxiliary valves, at least one of them being fluid-driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/03—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction
    • F03C1/035—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with movement in two directions being obtained by two single-acting piston liquid engines, each acting in one direction one single-acting piston being always under the influence of the liquid under pressure

Abstract

797,931. Engine valve gear. ABBEY, A. (Aktiebolaget Svenska Kullagerfabriken). July 17, 1956, No. 22124/56. Class 122 (2). [Also in Group XXVIII] A gaseous pressure-operated pump has mechanically independent differential pistons 11, 12, 13, 14, the pistons 12, 14 being subjected to gaseous pressure under the control of a valve 19 to cause the pistons 11, 13 to draw liquid from a reservoir 2 and to deliver it to an outlet 8. The differential pistons are returned by a plurality of pistons 32, 33 subjected to the air pressure, the arrangement being such that one piston must complete its return stroke before the working piston can supply the necessary air impulse to cause the valve 19 to change over. The valve 19 is provided at each end with a piston, the smaller, 25, of which is subjected to constant air pressure and the larger, 26, is selectively connected to air pressure or to atmosphere under the control of the pistons 32, 33. When the pistons 13, 14, 33 are in their raised position, air pressure is connected from a pipe 46 through the cylinder 42 through a groove 47 to a duct 40. When the piston 11, 12 completes its working stroke the duct 40 is connected via a groove 40a in the piston 32 to a pipe 35 which is connected to the cylinder in which the piston 26 works so that the piston 26 is subjected to air pressure to change over the valve 19. When the piston 11, 12 is in its raised position, the pipes 35, 40 are connected by a groove 23 in the piston 32 and when the piston 13, 14 completes its pressure stroke the pipe 40 is connected by an upper groove in the piston 33 to the chamber 37 which is connected to atmosphere, so that the piston 26 is subjected to atmospheric pressure and the valve 19 is changed over under the action of air pressure acting on the piston 25. In the intermediate position of the valve 19 during change-over, both pistons 12, 14 are subjected to air pressure. Specification 764,219 is referred to.
GB2212456A 1956-07-17 1956-07-17 Improvements in or relating to gaseous pressure operated pumps for liquids Expired GB797931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2212456A GB797931A (en) 1956-07-17 1956-07-17 Improvements in or relating to gaseous pressure operated pumps for liquids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2212456A GB797931A (en) 1956-07-17 1956-07-17 Improvements in or relating to gaseous pressure operated pumps for liquids

Publications (1)

Publication Number Publication Date
GB797931A true GB797931A (en) 1958-07-09

Family

ID=10174285

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2212456A Expired GB797931A (en) 1956-07-17 1956-07-17 Improvements in or relating to gaseous pressure operated pumps for liquids

Country Status (1)

Country Link
GB (1) GB797931A (en)

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