EP0393800B1 - Dispositif de clapet - Google Patents

Dispositif de clapet Download PDF

Info

Publication number
EP0393800B1
EP0393800B1 EP90201568A EP90201568A EP0393800B1 EP 0393800 B1 EP0393800 B1 EP 0393800B1 EP 90201568 A EP90201568 A EP 90201568A EP 90201568 A EP90201568 A EP 90201568A EP 0393800 B1 EP0393800 B1 EP 0393800B1
Authority
EP
European Patent Office
Prior art keywords
valve
seat
fluid
chamber
seats
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
EP90201568A
Other languages
German (de)
English (en)
Other versions
EP0393800A3 (en
EP0393800A2 (fr
Inventor
Yoshinobu Koiwa
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.)
Little Rock KK
Kelbin Co Ltd
Original Assignee
Little Rock KK
Kelbin Co Ltd
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
Priority claimed from JP63068882A external-priority patent/JP2557250B2/ja
Priority claimed from JP63077076A external-priority patent/JP2632540B2/ja
Priority claimed from JP63103232A external-priority patent/JPH07113426B2/ja
Application filed by Little Rock KK, Kelbin Co Ltd filed Critical Little Rock KK
Publication of EP0393800A2 publication Critical patent/EP0393800A2/fr
Publication of EP0393800A3 publication Critical patent/EP0393800A3/en
Application granted granted Critical
Publication of EP0393800B1 publication Critical patent/EP0393800B1/fr
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
    • 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
    • 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
    • F04B53/1015—Combinations of ball valves working in parallel
    • 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
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • 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
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid

Definitions

  • the present invention relates to a valve device.
  • FIGS. 8 and 9 show a valve device used on plunger pumps, a type of pump which is often used for high-pressure applications.
  • This valve device is constituted of a tubular seat 100, a valve-piece 102 provided with a surrounding flange 101, and a valve spring 103 which urges the valve-piece 102 against the seat 100.
  • plunger pumps are used to pump materials such as cement clinker, in the conventional valve device solid particles entrained in the fluid may be caught between the valve-piece 102 and the seat 100.
  • the tubular shape of the seat 100 used in the conventional valve device makes it easy for solid particles to pass through; in addition, because the seat 100 and the valve-piece 102 are made of metal the operation of the valve device may be adversely affected by solid particles that are caught therebetween. The result is that it has sometimes been impossible to pump a constant amount of fluid at a constant rate, so that operation of the pump was accompanied by a decline in efficiency. Furthermore, solid particles caught between the seat 100 and the valve-piece 102 can damage the seat and valve-piece, leading to leakage of fluid. Conventionally, therefore, the valve device has to be replaced at this point, which interrupts operations.
  • EP-A-0 309 240 discloses a valve device for preventing inflow of solid particles present in fluid and increasing the durability of the device.
  • a valve device (see Figures 10 and 11) comprises a seat 107 having a valve seat 104 formed as a concave surface 105 corresponding to part of a spherical surface, and a prescribed number of fluid passages 106 which are formed in the seat 107 and open into the concave surface 105.
  • valve-piece 108 that has a surface corresponding to the shape of the concave surface 105 of the valve seat 104, and a valve cover 110 and spring retainer 111 that maintain the valve-piece 108 on the concave surface 105 of the seat 107 via a valve spring 109.
  • at least one of the seat 107 and the valve-piece 108 is either formed of, or covered with, a hard resilient material, or one is formed of a hard resilient material and the other is covered with a hard resilient material.
  • wood may be used instead of the hard resilient material.
  • the fluid passages 106 formed in the seat 107 have a small diameter which makes it difficult for solid particles to pass therethrough. Even if solid particles should pass through the fluid passages 106 and get caught between the seat 107 and the valve-piece 108, the resilience of the valve seat and/or the valve-piece ensures that the functioning of the valve device will be not obstructed.
  • valve device thus configured is less adequate for pumping at higher pressures because increasing the amount being pumped causes the valve-piece 108 to vibrate during the inflow of fluid.
  • BE-A- 520 270 discloses a valve device having the pre-characterising features of claim 1.
  • US-A-1 092 782, US-A-3 298 320 and US-A-3 664 770 each discloses a valve device in which a plurality of fluid passages are provided before a valve seat but the valve seat is not spherically concave and the passages do not terminate at the valve seat surface but at a space before that surface.
  • a valve device comprising:-
  • ultrahigh fluid pump apparatus for use in a cement mill for example comprises a valve box 2 provided with a valve chamber 1, a plunger box 4 provided with a plunger 3, and a box 5 forming a pressure action chamber 5a disposed between the valve box 2 and the plunger box 4.
  • the valve box 2 has an inlet passage 6 and an outlet passage 7 that communicate with the valve chamber 1 and which are provided with an inlet valve 80 and an outlet valve 81, respectively.
  • a side wall 2a of the valve box 2 is provided with a passage 17 that connects the pressure-action chamber 5a with the valve chamber 1.
  • the position of the passage 17 is determined according to the difference in specific gravity between a liquid 28 and the fluid 14 to be pumped so that the latter does not enter the pressure action chamber 5a.
  • the passage 17 is located at a higher position in the pressure-action chamber 5a, and when the liquid has a lower specific gravity the passage 17 is positioned lower.
  • the position where the passage 17 opens into the pressure-action chamber 5a is higher than the inlet of the valve chamber 1.
  • the position of the passage 17 is determined according to the relationship between the heights of the pressure-action chamber 5a and the valve chamber 1 and a consideration of the specific gravities of the liquid and the fluid 14.
  • the end of the plunger 3 maintained within the cylinder 21 in the plunger box 4 via V-packing 22 projects into the pressure action chamber 5a and is reciprocated at high speed by a drive means (not illustrated).
  • a resilient membrane 23 is provided in the pressure-action chamber 5a to divide the pressure-action chamber 5a into a cylinder 21 side A and a valve chamber 1 side B.
  • the cylinder 21 side A of the resilient membrane 23 is filled with an operating medium 25, such as oil, via an oil passage 24 of the plunger box 4.
  • the valve chamber 1 side B of the pressure action chamber 5a and part of the passage 17 are filled with liquid 28, such as oil, which has a lower specific gravity than the fluid 14 and does not mix with the fluid 14. The liquid 28 comes into contact with the fluid 14 part-way along the passage 17.
  • a screening member 29 that uses a mesh screen, for example, to prevent particles that exceed a given size from entering the pressure-action chamber 5a.
  • the screening member 29 may be formed as an integral part of the valve box 5 which forms the pressure-action chamber 5a, and the passages 20 therein are set at a downward inclination toward the passage 17 side.
  • suction operation of the plunger 3 causes the resilient membrane 23 to contract, reducing the volume of the cylinder 21 side A of the pressure-action chamber 5a and increasing the volume on the valve chamber 1 side B.
  • the change in volume results in a rise in the level of the liquid 28 in the passage 17.
  • an amount of fluid 14 corresponding to the change in volume flows into the valve chamber 1 as the inlet valve 80 opens.
  • the expulsion operation of the plunger 3 causes the resilient membrane 23 to expand via the operating medium 25, and with the reduction in the volume of the valve chamber 1 side B the liquid 28 in the valve chamber 1 side B of the pressure-action chamber 5a is expelled.
  • the level of the liquid 28 in the passage 18 decreases and a corresponding amount of fluid 14 is forced out as the outlet valve 81 opens.
  • the liquid 28 is only forced part-way along the passage 17 and does not flow over to the valve chamber 1 side.
  • the inlet valve 80 and the outlet valve 81 each has a seat member 84 in the face 82 which are formed a multiplicity of valve seats 83 (eight, in the illustrated example) spaced at regular intervals around the edge, each being shaped into a concave form that corresponds to part of a spherical surface; spherical valve-pieces 85 arranged on the valve seats 83; and a valve housing 87 that presses the valve-pieces 85 onto the valve seats 83 by means of springs 86.
  • each of the valve seats 83 in the seat member 84 there are formed multiple fluid passages 88 (three in each case, in the illustrated example) that extend axially through the seat member 84 and communicate with and terminate at the valve seat surface.
  • fluid passages 89 Disposed around the edge of the valve housing 87 are fluid passages 89 corresponding to the valve seats 83 and in which the valve-pieces 85 fit.
  • the exit end of each of the fluid passages 89 is formed into a smaller diameter portion by a lip 90.
  • One end of each of the valve springs 86 is held at the lip 90.
  • valve housing 87 and seat member 84 are provided with respective central bolt through-holes 91 and 92 whereby they are bolted together by a bolt 93 and a nut 94.
  • valve-pieces 85 and/or the seat member 84 may be made of, or covered with, a hard resilient material such as synthetic resin, for example.
  • valves 80 and 81 takes the form of small amplitude movements of the numerous valve-pieces 85, vibration accompanying the opening and closing action of the valves can be prevented and when applied to pumps can provide reliable valve function and increased durability, compared with conventional arrangements.

Landscapes

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

Claims (1)

  1. Dispositif de clapet comprenant :
    (a) un organe faisant siège (84) sur une face (82) duquel sont formés une pluralité de sièges (83) de clapet espacés à intervalles réguliers autour du bord ;
    (b) une pluralité de passages pour fluide (88) dans l'organe faisant siège ;
    (c) une pluralité de pièces (85) de clapet, chacune des pièces de clapet correspondant à des sièges de clapet et chacune ayant une surface sphérique ; et
    (d) un logement (87) de clapet comprenant des moyens élastiques (86) qui pressent élastiquement les surfaces sphériques des pièces de clapet sur les surfaces de leurs sièges de clapets respectifs, caractérisé en ce que :
    (e) chacun des sièges a une forme concave et une surface qui correspond a une partie de surface sphérique, la surface sphérique de chacune des pièces de clapet correspondant a la surface des sièges de clapet respectifs ; et
    (f) pour chacun des sièges de clapet, il y a une pluralité de passages respectifs pour fluide dans et à travers l'organe faisant siège qui communique avec et se termine sur la surface du siège de clapet.
EP90201568A 1988-03-23 1989-03-16 Dispositif de clapet Expired - Lifetime EP0393800B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP63068882A JP2557250B2 (ja) 1988-03-23 1988-03-23 流体圧送装置
JP68882/88 1988-03-23
JP77076/88 1988-03-30
JP63077076A JP2632540B2 (ja) 1988-03-30 1988-03-30 流体圧送装置
JP63103232A JPH07113426B2 (ja) 1988-04-26 1988-04-26 バルブ装置
JP103232/88 1988-04-26
EP89302606A EP0343773B1 (fr) 1988-03-23 1989-03-16 Pompe pour fluide et dispositif de clapet

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP89302606.2 Division 1989-03-16

Publications (3)

Publication Number Publication Date
EP0393800A2 EP0393800A2 (fr) 1990-10-24
EP0393800A3 EP0393800A3 (en) 1990-11-07
EP0393800B1 true EP0393800B1 (fr) 1994-08-17

Family

ID=27299893

Family Applications (3)

Application Number Title Priority Date Filing Date
EP89302606A Expired - Lifetime EP0343773B1 (fr) 1988-03-23 1989-03-16 Pompe pour fluide et dispositif de clapet
EP90201581A Expired - Lifetime EP0390298B1 (fr) 1988-03-23 1989-03-16 Dispositif de pompage de fluide
EP90201568A Expired - Lifetime EP0393800B1 (fr) 1988-03-23 1989-03-16 Dispositif de clapet

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP89302606A Expired - Lifetime EP0343773B1 (fr) 1988-03-23 1989-03-16 Pompe pour fluide et dispositif de clapet
EP90201581A Expired - Lifetime EP0390298B1 (fr) 1988-03-23 1989-03-16 Dispositif de pompage de fluide

Country Status (5)

Country Link
EP (3) EP0343773B1 (fr)
KR (1) KR0181711B1 (fr)
AU (1) AU626838B2 (fr)
CA (1) CA1338102C (fr)
DE (3) DE68917587T2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368454A (en) * 1992-07-31 1994-11-29 Graco Inc. Quiet check valve
DE19604132C2 (de) * 1996-02-06 2000-04-13 Hammelmann Paul Maschf Hochdruckplungerpumpe, vorzugsweise für Arbeitsdrücke oberhalb 2.000 bar
DE69823640T2 (de) * 1997-10-02 2005-04-28 Sony Corp. Aufzeichnungs-/wiedergabevorrichtung und aufzeichnungs-/wiedergabeverfahren
SE518114C2 (sv) 1998-09-28 2002-08-27 Asept Int Ab Pumpanordning för att pumpa flytande livsmedel
US20110030213A1 (en) * 2009-08-07 2011-02-10 Weir Spm, Inc. Hydraulic installation tool for pump plunger
CA2931644C (fr) 2013-11-26 2019-08-06 S.P.M. Flow Control, Inc. Siege de vanne a utiliser dans des pompes de fracturation
CN106050596B (zh) * 2016-06-07 2018-05-25 神华集团有限责任公司 柱塞计量泵

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR959521A (fr) * 1950-03-31
BE520270A (fr) *
GB272374A (en) * 1926-09-21 1927-06-16 Nouvelle Soc Des Ateliers Patt Improvements in mud pumps
DE805006C (de) * 1950-01-20 1951-05-04 Westfalia Dinnendahl Groeppel Membranpumpe
US3298320A (en) * 1965-05-17 1967-01-17 Little Inc A Atraumatic fluid pump
US3363580A (en) * 1966-01-19 1968-01-16 Denver Equip Co Multiple valve pump
US3520643A (en) * 1968-10-22 1970-07-14 Passavant Werke Sewage pump or the like
US3664770A (en) * 1970-02-18 1972-05-23 Golden Arrow Mfg Ltd Diaphragm pumps
JPS5018604B1 (fr) * 1971-06-24 1975-07-01
US3802807A (en) * 1972-06-02 1974-04-09 Precision Control Prod Corp Pump
US4378183A (en) * 1980-09-18 1983-03-29 The Pittsburgh & Midway Coal Mining Co. Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid
FR2512123A1 (fr) * 1981-08-27 1983-03-04 Scumra Pompe volumetrique a membrane pour suspensions de particules fragiles
EP0238380B1 (fr) * 1986-02-20 1989-10-25 Saint Gobain Vitrage International Pompage de matières à viscosité élevée
JPH0198773A (ja) * 1987-09-22 1989-04-17 Yoshinobu Koiwa バルブ装置

Also Published As

Publication number Publication date
KR890014899A (ko) 1989-10-25
AU7113391A (en) 1991-05-02
EP0343773A1 (fr) 1989-11-29
AU3160689A (en) 1989-09-28
DE68910726T2 (de) 1994-03-24
EP0390298A3 (en) 1990-10-31
EP0390298B1 (fr) 1994-12-28
DE68910726D1 (de) 1993-12-23
EP0393800A3 (en) 1990-11-07
EP0390298A2 (fr) 1990-10-03
DE68917587T2 (de) 1994-12-15
AU639071B2 (en) 1993-07-15
CA1338102C (fr) 1996-03-05
KR0181711B1 (ko) 1999-05-01
EP0343773B1 (fr) 1993-11-18
EP0393800A2 (fr) 1990-10-24
AU626838B2 (en) 1992-08-13
DE68920306T2 (de) 1995-05-18
DE68917587D1 (de) 1994-09-22
DE68920306D1 (de) 1995-02-09

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