WO2006016921A2 - Pompe intégrée et appareil à clapets de non retour - Google Patents

Pompe intégrée et appareil à clapets de non retour Download PDF

Info

Publication number
WO2006016921A2
WO2006016921A2 PCT/US2005/015371 US2005015371W WO2006016921A2 WO 2006016921 A2 WO2006016921 A2 WO 2006016921A2 US 2005015371 W US2005015371 W US 2005015371W WO 2006016921 A2 WO2006016921 A2 WO 2006016921A2
Authority
WO
WIPO (PCT)
Prior art keywords
check valve
piston
fluid
pump
housing
Prior art date
Application number
PCT/US2005/015371
Other languages
English (en)
Other versions
WO2006016921A3 (fr
Inventor
Garret Angove
Original Assignee
Sapphire Engineering, Inc.
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 Sapphire Engineering, Inc. filed Critical Sapphire Engineering, Inc.
Publication of WO2006016921A2 publication Critical patent/WO2006016921A2/fr
Publication of WO2006016921A3 publication Critical patent/WO2006016921A3/fr

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
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time
    • 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
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber

Definitions

  • This invention relates to an integrated pump and check valve apparatus for pumping discrete liquid volumes to points of use of the liquid volumes. More particularly, this invention relates to an integrated displacement pump and check valve apparatus for pumping discrete liquid volumes to points of use.
  • the syringe pump includes a valve construction formed of a polymeric composition which directs the pumped liquid volumes to a point of use.
  • the valve construction includes a housing (stator) having a hollow, essentially interior surface into which is press fit a mating rotor.
  • the rotor is provided with fluid passageways that control flow of liquid into the syringe pump and flow of liquid from the syringe pump while providing sealing between a pump inlet and a pump outlet.
  • This configuration of syringe pump and rotor-stator valve requires two motors, one to drive the syringe and a second to drive the rotor.
  • a pump apparatus capable of delivering discrete liquid volumes to a point of use such as different areas of a sample tray in a manner which is repeatable for long time periods of 1,000,000 cycles or more.
  • a pump apparatus which avoids shedding of polymeric particles during pumping.
  • a pump which eliminates the need for a motor to activate a seal in order to direct fluid to a desired point of use.
  • the present invention provides a pumping apparatus comprising (a) a displacement pump having a liquid displacement element comprises a piston housed within a barrel, a high pressure seal and means for reciprocating the piston within the barrel and (b) check valves wherein the sealing is effected by activating a movable element under pressure of fluid being pumped without use of a motor.
  • Liquid in the barrel is delivered to a point of use while the piston is traveling toward a check valve positioned between the piston and the point of use and liquid is supplied to the barrel when the piston is traveling away from the check valve positioned between the piston and the point of use.
  • the moving piston is spaced apart from the inside surface of the barrel so that a frictional force between the piston and the barrel is prevented during pumping.
  • Fig. 1 is a side view of the displacement pump and check valve apparatus of this invention.
  • Fig. 2 is a front view of the apparatus of Fig. 1.
  • Fig. 3 is a cross-sectional view of the apparatus of Figure 2 taken along line 3-3 of Figure 2.
  • Fig. 4 is a cross-sectional view of a check valve useful in the present invention. DESCRIPTION OF SPECIFIC EMBODIMENTS
  • the pump apparatus 10 of this invention includes a housing 12 and a motor 16 which effects rotation.
  • Housing 32 which can be formed of an opaque or transparent material which is resistant to the liquid being pumped such as acrylic, polyetherether ketone, or the like can be a single piece or a plurality of joined elements.
  • the piston 34 can be formed of sapphire, glass or a ceramic or the like and is spaced apart from the interior wall 38 of housing 32. When the piston 34 is so-positioned, a single stroke of the piston 34 during use of the pump will deliver a known volume of liquid depending upon the piston diameter and the stroke length.
  • the housing 32 for the check valve 45 and the piston 34 can be formed of a single element.
  • this single element housing provides the advantage that the valve seats and displacement pump of this invention can be replaced simultaneously after the useful life of the pump is completed.
  • Motor 16 causes gear box 40 to reciprocate through pulley 41, and gears 42, 44 and 46 and gear track 48.
  • Gear box 40 is positioned within track 47 which causes the piston 34 to move in a repeatable linear path stroke after stroke. As shown in Fig. 1, the stroke of the pump varies from position 50 and position 52 which typically can be between about 1.5 and 2.0 inches. It is to be understood that any conventional activating apparatus which causes piston 34 to reciprocate on a linear path can be utilized in the present invention.
  • the piston 34 is positioned within seal 56 which can be formed, for example of ultra high molecular weight polyethylene (VHMWPE) or the like and optional roulon guide 58.
  • the roulon guide aligns piston 34 into seal 56.
  • the piston 34 reciprocates within seal 56 and roulon guide 58.
  • the piston 34 is fixedly positioned in ferrule 60 which, in turn, is fixed within arm 62 by knob 64.
  • the housing 32 can be formed of two pieces comprising piece 32b and 32a.
  • Housing piece 32b includes two valve seats 31 and 33 into which are positioned check valves 35 and 37.
  • Check valves 35 and 37 can have threads 39 and 41 to screw the valves 35 and 37 into valve seats 31 and 33 having internal threads (not shown).
  • Housing 32b can be provided with threads 49 and 45 to secure housing 32b to housing 12.
  • Check valve 35 is connected to conduit 45, which in turn is in fluid communication with a point of use for the fluid (not shown).
  • Check valve 37 is connected with conduit 47 which, in turn, is connected to a reservoir for the fluid (not shown).
  • check valve 35 In use, when piston 34 moves toward check valve 35, check valve 35 is open and check valve 37 is closed so that fluid is delivered through check valve 35 and conduit 45 to a point of use of the fluid. When piston 34 moves away from check valve 35, check valve 35 is closed and check valve 37 is open so that fluid moves into barrel 38 through check valve 37 and conduit 47 from a fluid reservoir.
  • valve 35 like valve 37 includes a movable ball 70 which moves within valve seat 72 to block either conduit 74 or conduit 76 to effect fluid flow as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

Un appareil de pompe comprend une pompe volumétrique et un appareil à clapets de non retour. La pompe volumétrique comprend un piston alternatif placé dans un corps dans lequel une paroi intérieure est espacée du piston. L'appareil à clapets de non retour comprend deux clapets de non retour qui commandent l'écoulement du fluide sous l'effet de la pression exercée par le piston alternatif, ledit fluide s'écoulant entre un réservoir et un point d'utilisation dudit fluide.
PCT/US2005/015371 2004-07-12 2005-05-04 Pompe intégrée et appareil à clapets de non retour WO2006016921A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/887,623 US20060008365A1 (en) 2004-07-12 2004-07-12 Integrated pump and check valve apparatus
US10/887,623 2004-07-12

Publications (2)

Publication Number Publication Date
WO2006016921A2 true WO2006016921A2 (fr) 2006-02-16
WO2006016921A3 WO2006016921A3 (fr) 2007-05-10

Family

ID=35541561

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/015371 WO2006016921A2 (fr) 2004-07-12 2005-05-04 Pompe intégrée et appareil à clapets de non retour

Country Status (2)

Country Link
US (1) US20060008365A1 (fr)
WO (1) WO2006016921A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8430651B2 (en) * 2010-01-08 2013-04-30 Medtronic, Inc. Multi-material single-piece actuator member for miniature reciprocating piston pump in medical applications
CN102330670B (zh) * 2011-09-19 2014-12-10 中航力源液压股份有限公司 一种柱塞泵防吸空方法及装置
CN107076126B (zh) * 2014-10-13 2020-07-07 阿尔法有限责任公司 用于流体产品的容积泵和泵送组以及使用其的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1546596A (en) * 1920-06-29 1925-07-21 Hugo Junkers Fuel pump
US3053195A (en) * 1959-04-14 1962-09-11 Larkin R Williamson High pressure hydraulic pump
GB2188437A (en) * 1986-01-30 1987-09-30 Geoservices Analysis of fluid gas content
US4883409A (en) * 1987-09-26 1989-11-28 Fred Strohmeier Pumping apparatus for delivering liquid at high pressure
US7080975B2 (en) * 2003-06-25 2006-07-25 Sapphire Engineering, Inc. Integrated pump and ceramic valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778347A (en) * 1986-09-15 1988-10-18 Mize Robert L High production pump for viscous materials and method
US5094596A (en) * 1990-06-01 1992-03-10 Binks Manufacturing Company High pressure piston pump for fluent materials

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1546596A (en) * 1920-06-29 1925-07-21 Hugo Junkers Fuel pump
US3053195A (en) * 1959-04-14 1962-09-11 Larkin R Williamson High pressure hydraulic pump
GB2188437A (en) * 1986-01-30 1987-09-30 Geoservices Analysis of fluid gas content
US4883409A (en) * 1987-09-26 1989-11-28 Fred Strohmeier Pumping apparatus for delivering liquid at high pressure
US7080975B2 (en) * 2003-06-25 2006-07-25 Sapphire Engineering, Inc. Integrated pump and ceramic valve

Also Published As

Publication number Publication date
US20060008365A1 (en) 2006-01-12
WO2006016921A3 (fr) 2007-05-10

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