WO2015066355A1 - Cartouche de clapet anti-retour pour pompe - Google Patents

Cartouche de clapet anti-retour pour pompe Download PDF

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Publication number
WO2015066355A1
WO2015066355A1 PCT/US2014/063208 US2014063208W WO2015066355A1 WO 2015066355 A1 WO2015066355 A1 WO 2015066355A1 US 2014063208 W US2014063208 W US 2014063208W WO 2015066355 A1 WO2015066355 A1 WO 2015066355A1
Authority
WO
WIPO (PCT)
Prior art keywords
check valve
pump
inlet
cartridge
valve
Prior art date
Application number
PCT/US2014/063208
Other languages
English (en)
Other versions
WO2015066355A4 (fr
Inventor
Richard D. Hembree
Original Assignee
Wanner 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 Wanner Engineering, Inc. filed Critical Wanner Engineering, Inc.
Publication of WO2015066355A1 publication Critical patent/WO2015066355A1/fr
Publication of WO2015066355A4 publication Critical patent/WO2015066355A4/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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
    • 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
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • F04B53/1005—Ball valves being formed by two closure members working in series
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7504—Removable valve head and seat unit
    • Y10T137/7559—Pump type

Definitions

  • the present invention is directed to a self contained cartridge-type valve assembly and in particular to a removable check valve cartridge for reciprocating positive displacement pumps.
  • Reciprocating positive displacement pumps utilizing a plunger or diaphragm to pump fluid generally have two check valves; an inlet check valve and a discharge check valve. Such valves may need to be serviced or replaced periodically to provide new seals and to perform other maintenance for normal wear and tear or should other problems arise. If multiple plungers or diaphragms are utilized, each pumping diaphragm typically has an associated inlet check valve and an associated discharge check valve. Multiple sets of valves may be arranged in a manifold. As check valves include many parts and in particular, many small parts, disassembly and replacement can be labor intensive and time consuming and is especially difficult for performing maintenance in the field.
  • each of the check valves can be removed as a unit or a cartridge.
  • Such arrangement has an inlet line connected to an inlet check valve that is screwed into the pump manifold.
  • the discharge valve is connected to a discharge line.
  • the inlet line and discharge lines are disconnected from the valve and each valve may be separately removed.
  • a new and improved pump with a single easily removable cartridge containing both the inlet check valve and the discharge valve is needed to reduce complexity and time required for service and maintenance.
  • a pump should not need to be directly connected to the inlet line or discharge line so that it can be removed and replaced without disconnecting lines.
  • cartridges should be easily removed and mounted to the pump's manifold and should allow for use with multiple cylinder pumps and should provide for multiple cartridges being directly mountable to a manifold for multiple cylinder pumps to avoid having complex external plumbing connecting to the cartridges.
  • the present invention addresses these as well as other problems associated with pumps and check valves.
  • Fluid pumps such as diaphragm pumps include an inlet check valve and a discharge check valve.
  • a check valve cartridge is completely self-contained unit and includes a housing that defines both the inlet check valve and the discharge check valve and is removable as an assembly to replace, interchange or service the inlet check valve and/or the discharge check valve. If multiple valve pairs are utilized, a manifold forming an inlet header and an outlet header is utilized to fluidly connect the valve assemblies and the associated pistons or diaphragms. A passage or header extends from the pumping chamber to the associated check valve cartridge intermediate the inlet check valve and the discharge check valve.
  • the check valve cartridge includes a lower housing, a center housing and an upper housing.
  • the center housing connects to the lower housing with a first removable pin while the upper housing connects to the center housing with a second removable pin.
  • the lower housing includes an inlet passage to the inlet header and forms a check valve seat with an inlet valve ball resting against the seat when the inlet valve is closed and being spaced apart from the inlet check valve seat when the inlet valve is open.
  • the first connecting pin also serves as a travel limiter for the inlet check valve ball.
  • the center housing includes a passage connecting the manifold passage to the pumping chamber.
  • the center housing includes a seat for the discharge check valve and the discharge valve ball.
  • the second pin connecting the center housing to the upper housing acts as a travel limiter for the discharge valve ball.
  • the center housing also includes an orifice aligning with the header forming the outlet passage through the manifold.
  • the upper housing of the cartridge includes a hex shaped upper head portion adjacent a threaded exterior that mates with complementary threads of the recess in the manifold receiving the cartridge.
  • valve cartridge allows for easily removing and replacing any of the three housings for service or replacing or interchanging the entire assembly for easy disassembly and/or for maintenance and replacement of gaskets and other wear parts.
  • the cartridges are easily accessed for removal from the top of the manifolds and avoid complicated removal of additional pumps elements, as may be required with prior pump check valves.
  • Figure 1 is a side sectional view of a portion of a prior art pump and inlet and check valves
  • FIG. 2 is a perspective view of a pump according to the principles of the present invention.
  • Figure 3 is a side sectional view of a pump shown in Figure 2 with a diaphragm in a first position
  • Figure 4 is a side sectional view of the pump according shown in Figure 2 with the diaphragm in a second position;
  • Figure 5 is a sectional view of the manifold for the pump shown in Figure 2;
  • Figure 6 is a perspective view of a check valve cartridge for the pump shown in Figure 2;
  • Figure 7 is a first side elevational view of the check valve cartridge shown in
  • Figure 8 is a second side elevational view of the check valve shown in Figure
  • Figure 9 is a sectional view of the check valve cartridge taken along line 9-9 of Figure 7 and with the check valves in a first position;
  • Figure 10 is a sectional view of the check valve cartridge taken along line 9- 9 of Figure 7, but with the check valves in a second position;
  • FIG 11 is an exploded perspective view of the check valve cartridge shown in Figure 6. Detailed Description of the Preferred Embodiment
  • a fluid pump such as a hydraulically driven diaphragm pump, generally designated (20).
  • the diaphragm pump (20) is driven by a crankshaft (36) mounted in a crankcase (22).
  • the manifold (26) includes an inlet passage (76) and a discharge passage (74).
  • the manifold (26) also includes one or more inlet check valves (72) and one or more discharge check valves (70).
  • the pump (20) is a diaphragm pump and includes a diaphragm (46) mounted on a valve stem (44).
  • the diaphragm pump (20) may be a metering pump with very low flows that requires reliable precision inlet and discharge valves to achieve precise flow rates.
  • the diaphragm (46) is hydraulically driven by a plunger (42) connected to a slider (40) on connecting rod (38) to the crankshaft (36).
  • the diaphragm system includes an overfill check valve (48) and an underfill check valve (50).
  • the diaphragm (46) receives fluid in a pumping chamber (34) and the fluid is pumped while the diaphragm deflects back and forth between an extended position and a fully retracted position.
  • the manifold (26) includes separate inlet check valves (72) and discharge check valves (70).
  • a pump (20) includes one or more check valve cartridges, generally designated (100) mounting in the manifold (26) as shown in Figures 2-5. As shown most clearly in Figure 5, multiple check valve cartridges (100) connect along an inlet passage (54) as well as an outlet passage (56). Pumping chamber passages (52) lead from each valve cartridge to an associated pumping chamber (32) for the diaphragm (46) associated with each of the cartridges (100).
  • the check valve cartridge (100) includes a lower housing (110), a center housing (120) and an upper housing (130).
  • the lower housing (110) connects to the center housing (120) by a removable first pin (118).
  • the first pin (118) is removable when not mounted and held in place once inserted into the manifold (140).
  • the center housing (120) attaches to the upper housing (130) by a removable second pin (132).
  • the removable second pin (132) is held in place by the walls of the manifold (140) when the cartridge (100) is inserted.
  • the check valve cartridge (100) is therefore divided into an inlet check valve module and a discharge check valve module.
  • the lower housing (110) includes an inlet passage (112) that connects to the inlet passage (54) of the manifold (26), which forms a header through the manifold (26).
  • the lower housing forms an inlet check valve (102) while the center housing (120) with the upper housing (130) forms a discharge check valve (104).
  • the inlet check valve (102) includes a valve ball (116) that seals to an inlet check valve seat (114) when closed.
  • the inlet check valve (102) includes O-ring type gaskets or seals (150) including seals engaging the check valve ball (116).
  • a cylindrical liner (138) is inserted in each check valve to align the check valve ball (116) as well as holding the gasket (150) in proper position.
  • the center housing (120) forms a passage (122) connecting to the pumping chamber passage (52) formed in the manifold (26).
  • the center housing (120) forms a seat (128) receiving an O-ring type gasket (150) and the cylindrical insert (138) holding the gasket in place.
  • the discharge valve ball (126) engages the gasket (150) when the discharge check valve (104) is in the closed position.
  • the pin (132) connects the center housing (120) to the upper housing (130) and acts as a travel limiter for the discharge valve ball (126).
  • the upper housing (130) includes the hex top (106) or other shape allowing engagement with a conventional wrench, socket or similar tool that allows for applying the tool to turn the cartridge (100).
  • the upper housing (130) also includes a threaded portion (134) mating with complementary threads (142) of the manifold (26) to secure the cartridge (100).
  • Such a configuration provides for easy and simple removal and interchanging of the entire check valve cartridge (100) with
  • the upper housing (130) also forms an orifice (136) that aligns with the outlet passage (56) formed in the manifold (26).
  • the check valve cartridge (100) includes both the inlet check valve (102) and discharge check valve (104) that are automatically actuated by the pumping action of the diaphragm (46). During the suction portion of the diaphragm stroke, the valve ball (116) and the valve ball (126) are positioned as shown in Figure 9.
  • the travel of the inlet valve ball (116) is limited by the lower pin (118) and allows fluid to pass around the valve ball (116) and through the inlet check valve (102).
  • the inlet check valve (102) is closed and the discharge check valve (104) is open.
  • the diaphragm (46) forces fluid through the pumping chamber (34) and passages (52) and (122) to engage the discharge valve ball (126) and lift the valve ball (126) from engagement with the seat (128) and its respective gasket (150).
  • Travel of the discharge valve ball (126) is limited by the pin (132), but allows fluid to flow around the valve ball (126).
  • the pump fluid passes through the transverse orifice (136) aligned with the outlet passage (56) where it is forced from the manifold (26).
  • the inlet check valve (102) is closed with the inlet valve ball (116) engaging the inlet valve seat (114) and its respective gasket (150).
  • the check valve cartridge (100) provides a simple and reliable operation with only the valve balls (116, 126) moving and having geometry that automatically limits the travel of each of the valve balls (116) and (126) in response to pressure changes from the suction or discharge stroke of the pump (20). Moreover, the entire cartridge (100) can be removed and replaced or removed and serviced or maintained by simply unscrewing the cartridge (100) with a conventional wrench or socket. Moreover, the cartridge (100) is a completely self-contained assembly and configured and accessed so that no additional elements need to be removed in order to service and access the inlet check valve (102) and/or the discharge check valve (104).

Abstract

L'invention concerne une pompe comprenant une cartouche de clapet anti-retour montée de manière amovible sur la pompe. La cartouche comprend un clapet anti-retour d'admission et un clapet anti-retour d'évacuation. Un raccord est monté de façon intermédiaire entre le clapet anti-retour d'admission et le clapet anti-retour d'évacuation. Les clapets anti-retour d'admission et d'évacuation comprennent chacun une bille de clapet mobile entre une position ouverte et une position fermée, un siège de clapet entrant en prise avec l'élément de clapet dans la position fermée, une admission et une évacuation. La cartouche de clapet anti-retour est montée par filetage sur la pompe ou un collecteur et constitue un ensemble autonome.
PCT/US2014/063208 2013-10-31 2014-10-30 Cartouche de clapet anti-retour pour pompe WO2015066355A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361898368P 2013-10-31 2013-10-31
US61/898,368 2013-10-31

Publications (2)

Publication Number Publication Date
WO2015066355A1 true WO2015066355A1 (fr) 2015-05-07
WO2015066355A4 WO2015066355A4 (fr) 2015-06-25

Family

ID=51871326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2014/063208 WO2015066355A1 (fr) 2013-10-31 2014-10-30 Cartouche de clapet anti-retour pour pompe

Country Status (2)

Country Link
US (1) US20150118082A1 (fr)
WO (1) WO2015066355A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653895A1 (de) * 1996-12-21 1998-06-25 Teves Gmbh Alfred Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage
US7686595B1 (en) * 2005-12-12 2010-03-30 Stephen Graham Diaphragm pump
DE102009006042A1 (de) * 2008-12-19 2010-07-01 Continental Teves Ag & Co. Ohg Kolbenpumpe, insbesondere zur Versorgung elektrohydraulischer Bremssysteme

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2894459A (en) * 1957-01-04 1959-07-14 Gen Motors Corp Fuel pump
US2962974A (en) * 1959-07-24 1960-12-06 Thomas K Hampton Pump unit
US3407791A (en) * 1967-12-08 1968-10-29 Continental Aviat & Eng Corp Supply valve assembly for variable compression ratio piston assembly
US4365745A (en) * 1981-02-05 1982-12-28 Louis Beck Diaphragm pump
US4862911A (en) * 1988-11-14 1989-09-05 Fluidyne Corporation Check valve assembly for high pressure pumps
US5775884A (en) * 1996-06-24 1998-07-07 Y-Z Industries Sales, Inc. Modular pump assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653895A1 (de) * 1996-12-21 1998-06-25 Teves Gmbh Alfred Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage
US7686595B1 (en) * 2005-12-12 2010-03-30 Stephen Graham Diaphragm pump
DE102009006042A1 (de) * 2008-12-19 2010-07-01 Continental Teves Ag & Co. Ohg Kolbenpumpe, insbesondere zur Versorgung elektrohydraulischer Bremssysteme

Also Published As

Publication number Publication date
US20150118082A1 (en) 2015-04-30
WO2015066355A4 (fr) 2015-06-25

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