US3489100A - Air driven fluid pump - Google Patents

Air driven fluid pump Download PDF

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Publication number
US3489100A
US3489100A US690185A US3489100DA US3489100A US 3489100 A US3489100 A US 3489100A US 690185 A US690185 A US 690185A US 3489100D A US3489100D A US 3489100DA US 3489100 A US3489100 A US 3489100A
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US
United States
Prior art keywords
bore
piston
pump
cylinder
air
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 - Lifetime
Application number
US690185A
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English (en)
Inventor
David C Hill
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.)
Haskel Engineering and Supply Co
Original Assignee
Haskel Engineering and Supply Co
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 Haskel Engineering and Supply Co filed Critical Haskel Engineering and Supply Co
Application granted granted Critical
Publication of US3489100A publication Critical patent/US3489100A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B9/123—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 only one pumping chamber
    • F04B9/125—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 only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
    • 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
    • F01L25/066—Arrangements with main and auxiliary valves, at least one of them being fluid-driven piston or piston-rod being used as auxiliary valve
    • 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
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • the invention is a reciprocating piston for driving a pump that is powered by fluid such as air as well as by hand. It can be operated by power and manually simultaneously. The power operation may be by way of an air cylinder with a manual operating lever attached to the stem of the air cylinder.
  • the pump is useful for many applications but particularly for jacking operations wherein ordinarily it is necessary to have a separate hand pump in the event of an air compressor failure or in the event no compressed air power is available.
  • the herein invention makes it unnnecessary to have two different pumps, thus realizing economy in equipment and space, together with simplifying maintenance over that required for two separate units.
  • the invention relates to the field of fluid pumps and the improvement of the invention is a combination comprising a fluid pump provided with power drive along with manual drive or manual operating means.
  • a fluid pump is power driven by means of an air cylinder althoungh other power means might be used.
  • the fluid pump is a reciprocating piston pump which, with the combination of the invention, is powered by air or by hand or both simultaneously.
  • the invention is adapted to various different applications among which an important one is that in the field of jacking.
  • power drive such as an air driven pump
  • the herein invention avoids the necessity of having two different pumps thus realizing economy in equipment and space, in addition to simplifying maintenance which is, of course greater where two separate units are required.
  • the realization of these advantages constitutes primary object of the invention.
  • FIGURE l is a view partly in section of a preferred form of the invention.
  • FIGURE 2 is a sectional view of the form of the invention shown in FIGURE 1;
  • FIGURE 3 is a diagramatic View illustrating the automatic operation of the air cylinder of the equipment.
  • the equipment comprises a generally upright cylindrical body 10.
  • the fluid pump and its valves are in the lower part of this body; the air cylinder is in the intermediate part of it; and the manually actuated stem is in the upper part of the body.
  • Numeral 12 designates a cylindrical mmeber at the upper part of the body 10.
  • the cylindrical member 12 has a central bore 14 which is a cylinder or a sleeve 16 having a head 18 and the upper part of which adjacent to the head is threaded into the upper end of the bore 14.
  • the sleeve 16 has a bore 22.
  • the lower part of the sleeve 16 is of slightly smaller diameter so as to be spaced from the sidewalls of the bore 14 as 'may be seen at 26.
  • the sleeve 1-6 has a skirt 28 at the lower end of a diameter which is intermediate to that of the bore 22 and the bore 14.
  • a sealing O-ring 30 in annular groove 31 in cylindrical stem 40.
  • an annular groove below the threaded portion 20 and received in this groove is a sealing O-ring 34.
  • the cylindrical stem 40 which connects to the air cylinder as will be described.
  • a socket 42 which receives a ball 44 on the end of a link 46 which connects to the manual operating handle, as will be described.
  • Stem 40 is sealed in bore 22 by O-ring 39 in annular groove 41.
  • a frame member 50 Secured to the cylindrical member 12 is a frame member 50 having an upstanding intermediate part forming a yoke having legs 52 and 54 adjacent to square shoulders 56 and S8.
  • the member 50 is attached to the member 12 by stud bolts 62 and 64 having nuts 66 and 68 at one end and nuts 67 and 69 at the lower ends.
  • Numeral 74 designates the manual operating handle, which preferably is round, with the end bifurcated to provide a slot 76 between two legs 80 and 82. These legs fit between the legs 52 and 54 and are pivotally secured thereto by the transverse pivot bolt 88 having a nut 90.
  • the link 46 extends in between the legs 80 and 82 and is pivotally secured thereto by means of the pivot pin 94.
  • the pilot valve mechanism for operating the air cylinder is embodied in the member 12 as Will be described.
  • Numeral designates a cylindrical member at the lower part of the body 10, this member being of the same diameter as the member 12.
  • a cylinder 102 Between the member 12 and 100 is a cylinder 102.
  • the upper end of this cylinder fits into an annular shoulder 104 at the lower part of the member 12 and the lower end of the cylinder 102 ts into an annular shoulder 106 at the upper end of the cylindrical part 100.
  • the upper end of the cylinder 102 is sealed to the part 12 by way of O-ring 108 and the lower end of the cylinder 102 is sealed to the member 100 by O-ring 110.
  • the air cylinder piston is designated at 116 and reciprocates within the cylinder 102. At its periphery there is an annular groove 118 in which is a sealing O-ring 120. An annular recess or depression 122 is provided in the lower side of the piston 116 and fitting in this depression is a disc 126 configurated to complementarily engage the recess 122.
  • the piston 116 has a central bore 130 through which the stem extends. On the end of this stem is a disc 132 which is secured to a similar disc 134 OI! the upper end of the stem 136 of the uid piston, that is the piston of the pump.
  • the lower cylindrical member 100 has in its upper end an annular groove 140 the outer wall of which is parallel to the axis of the assembly and the inner wall which tapers inwardly as shown.
  • a coil spring 144 Within the cylinder 102 is a coil spring 144, the upper end of which bears against the disc 126 and the lower end of which is seated in the bottom of the annular groove 140.
  • an axial bore 150 In the center of the lower cylindrical member 100 is an axial bore 150. In this bore is the fluid pump cylinder 152.
  • the stem 136 moves through a cylindrical yoke member 154 which is in the bore 150.
  • Numeral 156 designates an annular groove in the sidewall of the bore 150 adjacent to the yoke 154 and in this annular groove is a sealing O-ring 158.
  • the cylindrical yoke 154 itself has a bore 1-60 and in this bore is a sealing gasket 162.
  • the pump cylinder 152 has an annular ange 164 spaced from its end forming a square shoulder, and the yoke 154 engages this cylinder, its lower end tting against the square shoulder at the upper end of the piston.
  • the pump cylinder 152 has a cylindrical bore 168 in which piston 136 moves.
  • the end of the pump cylinder bore 150 is closed by the plug 170 having a threaded part 172 threaded into a threaded part 174 at the end of the bore 150 of a slightly larger diameter, the part 170 having a bore 176.
  • Plug 170 is sealed by O-ring 175 and it bears against cylinder 152 holding the parts in position.
  • the fluid pump is provided with inlet and outlet check valves so that fluid which may be gas or liquid is drawn in on the suction stroke and compressed and forced out on the pressure stroke.
  • fluid which may be gas or liquid is drawn in on the suction stroke and compressed and forced out on the pressure stroke.
  • a threaded bore 180 which receives a threaded nipple 182 having a threaded part 184.
  • the nipple 182 has an outer tapered threaded bore 185 communicating with cylindrical bore 186.
  • a bore 190 Spaced inwardly from the inner end of the nipple 182 is a bore 190 having in it a member 192 having a valve part 194 having horrs 195 and having a skirt part 198 forming a spring retainer for a biasing spring 202, the other end of which is positioned against a bore 203 of smaller diameter at the end of the bore 190.
  • the bore 203 communicates with the bore 150 in which the piston 152 operates.
  • valve member 192-194 positioned so that this check valve openates as an outlet valve.
  • Valve 194' communicates with bore 150, the parts of this assembly being similar to the corresponding parts on the opposite side but being arranged to form an outlet or exhaust check valve.
  • FIGURE 3 illustrates schematically a preferred arrangement for automatically operating the air cylinder piston 116. It should be pointed out, however, that other arrangements may be utilized for driving this piston and such arrangements may be -made like that in Patent No. 3,174,409 wherein a spool-type of pilot valve mechanism is utilized for controlling an air cylinder.
  • a transverse bore 220 communicating with a larger bore 222.
  • a shuttle valve 224 Positioned in these bores is a shuttle valve 224 having a smaller part 226 in the smaller bore and a larger 228 in ⁇ the larger bore.
  • the end part of the smaller portion 226 is of larger diameter having in it an annular groove 232 in which is a sealing O-ring 234.
  • This part of the shuttle valve 224 has an internal bore 240 connecting with a larger internal bore 242 in the part 228 of the shuttle valve of larger diameter.
  • the shuttle valve at the right end looking at FIGURE 3 has an extending part 244 of smaller diameter forming a square annular shoulder 246.
  • annular groove 248 in which is a sealing O-ring 250.
  • a groove 251 communicating with a channel 252 in the portion 12 which connects with the interior of the cylinder 102.
  • Numeral 254 designates a :channel formed in the part 12 which communicates with the bore 220 as shown.
  • a channel 256 In the sidewall of the smaller part of the shuttle valve 226 is a channel 256 allowing communication to bore 240 within the shuttle valve.
  • a channel 258 Formed in the extending end 244 of the shuttle valve is a channel 258 which allows communication from the bore 242 within the shuttle valve to the annular space formed between the annular shoulder 246 of the shuttle valve and the bore 222.
  • the operation of the shuttle valve in automatically controlling the operation of the piston 116 will now be described. Pressure from any suitable source is provided by channel 254 to the'shuttle valve.
  • the interior of the bore 222 is referred to herein as the control chamber.
  • the shuttle valve moves between two positions as shown in FIGURE 3 in full lines and broken lines.
  • the control chamber that is the space within the bore 222 communicates with the 'space within the cylinder 102 above the piston 116. This communication is by way of channel 260 into the space around the lower part 26 of the sleeve 18 which has a diameter smaller than the bore 14.
  • the stem 40 is of smaller diameter than the bore 262 so that air from the control chamber passes down into the ⁇ space above the piston 1.16.
  • the sequence of operation is as follows:
  • the solid line position of the shuttle valve is the pump stroke position.
  • the high pressure enters through the channel 254 and passes around the part 226 of the shuttle valve of smaller diameter through the channel 252 into the chamber above the piston 16 forcing it down in its pump stroke.
  • Stem 40 moves down and when O-ring 39 passes below the end of bore 14 the air in the control chamber is exhausted through the bore 22 in sleeve 18 above O- ring seal 39.
  • the pressure in bore 220 around the part of shuttle valve 227 of smaller diameter acting against the part of the shuttle valve of larger diameter shifts it to the right to the dotted line position which is the suction stroke position.
  • Pump means comprising a cylinder having a piston therein, said piston having a stem
  • power means for operating the pump comprising a cylinder having a piston therein and means for supplyingucid pressure for operating said piston, and for releasing fluid pressure
  • spring means for moving said fluid operated piston in one direction and additional manually operated means cooperable with said fluid operated piston whereby said fluid operated piston and manual operating means may be moved in one direction against the said spring and the fluid operated piston and manual operating means can be moved in the other direction by the spring wherebyucid power, and manual power can be selectively applied simultaneously or -separately for purposes of precise control of the actuation of the pump.
  • said reciprocatable control valve comprises a spool member having areas of diierent diameters one of which is Within a chamber in which pressure is controlled by said further valve means for causing fluid pressure to be applied to and released from rsaid spool member.
  • said further valve means comprises a stem extending from the fluid operated piston associated with ports whereby to control pressure in said chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US690185A 1967-12-13 1967-12-13 Air driven fluid pump Expired - Lifetime US3489100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69018567A 1967-12-13 1967-12-13

Publications (1)

Publication Number Publication Date
US3489100A true US3489100A (en) 1970-01-13

Family

ID=24771455

Family Applications (1)

Application Number Title Priority Date Filing Date
US690185A Expired - Lifetime US3489100A (en) 1967-12-13 1967-12-13 Air driven fluid pump

Country Status (5)

Country Link
US (1) US3489100A (fr)
JP (1) JPS4835562B1 (fr)
DE (1) DE1814102A1 (fr)
FR (1) FR1597814A (fr)
GB (1) GB1245603A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793898A (en) * 1971-05-18 1974-02-26 Bosch Gmbh Robert Gear shifting assembly for change-speed transmissions
US3802200A (en) * 1972-03-27 1974-04-09 Kelsey Hayes Co Plastic master cylinder
US3963383A (en) * 1972-10-04 1976-06-15 Haskel Engineering & Supply Co. Air driven pump
US4645431A (en) * 1984-03-30 1987-02-24 Sigma Enterprises, Inc. Hydraulic pumping apparatus and method of operation
US4812109A (en) * 1986-11-17 1989-03-14 Kabushiki Kaisha Kosmek Apparatus for driving piston by fluid pressure
US5007812A (en) * 1989-09-05 1991-04-16 Hartt Joseph R Hydraulic pump with pulsating high and low pressure outputs
US5050482A (en) * 1990-01-31 1991-09-24 Kabushiki Kaisha Kosmek Apparatus for driving piston by fluid pressure
US5626467A (en) * 1996-04-04 1997-05-06 Teledyne Industries, Inc. Modular pump
USD380479S (en) * 1996-03-06 1997-07-01 Teledyne Industries, Inc. Modular pump
US6503066B1 (en) 2000-06-20 2003-01-07 Curtiss-Wright Flow Control Corporation Hydrostatic pressure test pump
US20110197750A1 (en) * 2010-02-12 2011-08-18 Wen-Feng Wang Pneumatic Control Device for Supplying Hydraulic Fluid
US9470110B2 (en) 2009-02-23 2016-10-18 Novopower Ltd. Pressurized-gas powered compressor and system comprising same
US11111907B1 (en) 2018-05-13 2021-09-07 Tpe Midstream Llc Fluid transfer and depressurization system
WO2024065587A1 (fr) * 2022-09-30 2024-04-04 Graco Minnesota Inc. Appareil et procédé d'extension de course de pompe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63147632U (fr) * 1987-03-18 1988-09-29

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US142092A (en) * 1873-08-26 Improvement in attachments for direct-acting steam-pumps
US3141415A (en) * 1962-10-08 1964-07-21 Continental Motors Corp Pneumatic fuel pump
US3143928A (en) * 1961-11-30 1964-08-11 Bendix Corp Servomotor control system
US3354641A (en) * 1965-08-26 1967-11-28 Gen Motors Corp Pedal lift mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US142092A (en) * 1873-08-26 Improvement in attachments for direct-acting steam-pumps
US3143928A (en) * 1961-11-30 1964-08-11 Bendix Corp Servomotor control system
US3141415A (en) * 1962-10-08 1964-07-21 Continental Motors Corp Pneumatic fuel pump
US3354641A (en) * 1965-08-26 1967-11-28 Gen Motors Corp Pedal lift mechanism

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793898A (en) * 1971-05-18 1974-02-26 Bosch Gmbh Robert Gear shifting assembly for change-speed transmissions
US3802200A (en) * 1972-03-27 1974-04-09 Kelsey Hayes Co Plastic master cylinder
US3963383A (en) * 1972-10-04 1976-06-15 Haskel Engineering & Supply Co. Air driven pump
US4645431A (en) * 1984-03-30 1987-02-24 Sigma Enterprises, Inc. Hydraulic pumping apparatus and method of operation
US4812109A (en) * 1986-11-17 1989-03-14 Kabushiki Kaisha Kosmek Apparatus for driving piston by fluid pressure
US5007812A (en) * 1989-09-05 1991-04-16 Hartt Joseph R Hydraulic pump with pulsating high and low pressure outputs
US5050482A (en) * 1990-01-31 1991-09-24 Kabushiki Kaisha Kosmek Apparatus for driving piston by fluid pressure
USD380479S (en) * 1996-03-06 1997-07-01 Teledyne Industries, Inc. Modular pump
US5626467A (en) * 1996-04-04 1997-05-06 Teledyne Industries, Inc. Modular pump
US6503066B1 (en) 2000-06-20 2003-01-07 Curtiss-Wright Flow Control Corporation Hydrostatic pressure test pump
US9470110B2 (en) 2009-02-23 2016-10-18 Novopower Ltd. Pressurized-gas powered compressor and system comprising same
US20110197750A1 (en) * 2010-02-12 2011-08-18 Wen-Feng Wang Pneumatic Control Device for Supplying Hydraulic Fluid
US8262371B2 (en) * 2010-02-12 2012-09-11 Wen-Feng Wang Pneumatic control device for supplying hydraulic fluid
US11111907B1 (en) 2018-05-13 2021-09-07 Tpe Midstream Llc Fluid transfer and depressurization system
US11859612B2 (en) 2018-05-13 2024-01-02 TPE Midstream, LLC Fluid transfer and depressurization system
WO2024065587A1 (fr) * 2022-09-30 2024-04-04 Graco Minnesota Inc. Appareil et procédé d'extension de course de pompe

Also Published As

Publication number Publication date
FR1597814A (fr) 1970-06-29
JPS4835562B1 (fr) 1973-10-29
GB1245603A (en) 1971-09-08
DE1814102A1 (de) 1969-10-30

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