GB1363967A - Nonpulsating fluid flow pump - Google Patents

Nonpulsating fluid flow pump

Info

Publication number
GB1363967A
GB1363967A GB995872A GB995872A GB1363967A GB 1363967 A GB1363967 A GB 1363967A GB 995872 A GB995872 A GB 995872A GB 995872 A GB995872 A GB 995872A GB 1363967 A GB1363967 A GB 1363967A
Authority
GB
United Kingdom
Prior art keywords
piston
cylinder
valve
cam
outlet
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
GB995872A
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.)
NII NEFTEKHIMICHESKIKH PROIZV
Original Assignee
NII NEFTEKHIMICHESKIKH PROIZV
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 NII NEFTEKHIMICHESKIKH PROIZV filed Critical NII NEFTEKHIMICHESKIKH PROIZV
Priority to GB995872A priority Critical patent/GB1363967A/en
Publication of GB1363967A publication Critical patent/GB1363967A/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
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • 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
    • F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
    • F04B3/003—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage with two or more pistons reciprocating one within another, e.g. one piston forning cylinder of the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

1363967 Reciprocating pumps NAUCHNOISSLEDOVATELSKY INSTITUT NEFTEKHIMICHESKIKH PROIZVODSTV USSR 3 March 1972 9958/72 Heading F1A A pump of adjustable, non-pulsating output, e.g. for delivering small quantities for laboratory use, comprises a series of pistons and cylinders, the first pumping chamber 10, Fig. 2 being connected to an outlet 4 and the second pumping chamber 11 communicating with an inlet 5 during its suction stroke and with the first pumping chamber and outlet during its discharge stroke. As shown, cylinder 6 is fixed, piston 7 and cylinder 8 are moved together by a cam 3, Fig.1, acting through a rocker 17 and rod 21, and piston 9 is moved 180 degrees out of phase with piston 7 and cylinder 8 by cam 3 acting through rocker 18 and rod 22, a pivot 25 being movable to adjust the pump output. Springs 23, 24 bias cam follower rollers 19, 20 onto cam 3. The cam is shaped to produce a discharge stroke slower than the suction stroke. In operation, with piston-cylinder 7, 8 and piston 9 moving upwardly, liquid is discharged from chamber 10 through outlet 4, valves 13 and 15 being closed. When piston 9 starts to move downwardly, with piston-cylinder 7, 8 still moving upwardly, valve 13 remains closed and valve 15 opens to admit liquid into chamber 11 from inlet 5. Finally, piston-cylinder 7, 8 starts to move downwardly and piston 9 moves upwardly, valve 15 closing and valve 13 opening so that liquid continues to be discharged through outlet 4. In Fig.3 (not shown) valves 13, 15 are replaced by a slide valve controlling parts in a housing on cylinder 6, one part communicating with pumping chamber 11 via a flexible pipe. In Fig.4 (not shown) the valves are ball, non-return valves in a housing on cylinder 6. In Fig. 5 (not shown) a change-over valve (31) operated by the piston movement is incorporated in the piston-cylinder 7, 8. In Fig. 6 (not shown) piston-cylinder 7, 8 is replaced by a doublecylinder and cylinder 6 by a fixed piston, piston 9 being formed with a flat on its side wall and being rotatable to function as a valve controlling an inlet port and a passage between the cylinders.
GB995872A 1972-03-03 1972-03-03 Nonpulsating fluid flow pump Expired GB1363967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB995872A GB1363967A (en) 1972-03-03 1972-03-03 Nonpulsating fluid flow pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB995872A GB1363967A (en) 1972-03-03 1972-03-03 Nonpulsating fluid flow pump

Publications (1)

Publication Number Publication Date
GB1363967A true GB1363967A (en) 1974-08-21

Family

ID=9881918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB995872A Expired GB1363967A (en) 1972-03-03 1972-03-03 Nonpulsating fluid flow pump

Country Status (1)

Country Link
GB (1) GB1363967A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5575627A (en) * 1995-01-12 1996-11-19 Hyvair Corporation High and low pressure two stage pump and pumping method
WO2010118740A2 (en) 2009-04-17 2010-10-21 Fachhochschule Jena Method and apparatus for the pulsation-free volumetric delivery of fluids and suspensions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5575627A (en) * 1995-01-12 1996-11-19 Hyvair Corporation High and low pressure two stage pump and pumping method
WO2010118740A2 (en) 2009-04-17 2010-10-21 Fachhochschule Jena Method and apparatus for the pulsation-free volumetric delivery of fluids and suspensions
DE102009017918A1 (en) 2009-04-17 2010-12-16 Fachhochschule Jena Method and device for pulsation-free volumetric delivery of fluids and suspensions

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee