WO2022085289A1 - Soupape à diaphragme - Google Patents

Soupape à diaphragme Download PDF

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Publication number
WO2022085289A1
WO2022085289A1 PCT/JP2021/030486 JP2021030486W WO2022085289A1 WO 2022085289 A1 WO2022085289 A1 WO 2022085289A1 JP 2021030486 W JP2021030486 W JP 2021030486W WO 2022085289 A1 WO2022085289 A1 WO 2022085289A1
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WO
WIPO (PCT)
Prior art keywords
seat
holder
diaphragm
outer edge
sheet
Prior art date
Application number
PCT/JP2021/030486
Other languages
English (en)
Japanese (ja)
Inventor
圭介 石橋
忠幸 薬師神
隆志 一法師
俊英 吉田
Original Assignee
株式会社フジキン
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 株式会社フジキン filed Critical 株式会社フジキン
Priority to JP2022556439A priority Critical patent/JP7426149B2/ja
Priority to KR1020237016413A priority patent/KR20230085201A/ko
Publication of WO2022085289A1 publication Critical patent/WO2022085289A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
    • F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
    • F16K7/16—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being mechanically actuated, e.g. by screw-spindle or cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm

Definitions

  • the present invention relates to a diaphragm valve, and more particularly to a diaphragm valve in which the seat is detachable and held in a seat holder.
  • the conventional diaphragm valve 70 as shown in FIG. 8 is formed on a body 71 having a fluid inflow passage 72 and a fluid outflow passage 73 inside, a seat 75 arranged on the periphery of the fluid passage, and an upper part of the body 71.
  • the diaphragm 76 which is arranged in the recess 74 and opens and closes the fluid passage by being pressed and separated from the seat 75, the bonnet 78 that presses the outer peripheral edge of the diaphragm 76 from above, and the actuator 80 move up and down.
  • the tip is provided with a stem 79 for deploying a diaphragm retainer 77 that presses the central portion of the diaphragm 76.
  • the seat 75 of the diaphragm valve 70 is fixed to the seat accommodating portion 81 formed at the bottom of the recess 74 by crimping, the seat 75 can be easily replaced if the seat 75 is worn out or the like. It is difficult and may require replacement of the body 71 itself.
  • the diaphragm valve 100 shown in FIG. 9 includes a body 102 having an inflow path 108 and an outflow path 109, a seat 103 detachably provided in the body 102 and located in the middle of the inflow path 108 and the outflow path 109.
  • a seat holder 104 provided on the outer periphery of the seat 103 in the body 102 to hold the seat 103, and a diaphragm 105 provided above the seat 103 and the seat holder 104 so that the central portion can abut and separate from the seat.
  • the seat 103 is provided between the driving means 106 provided above the diaphragm 105 to bring the diaphragm 105 into contact with and separated from the seat 103, and the seat holder 104 provided on the body 102 and located on the inner circumference of the seat 103.
  • a raised portion 107 for holding is provided.
  • the sheet 103 is housed in the sheet accommodating portion 111 formed in the raised portion 107.
  • the diaphragm 105 is pressed and fixed from above by the bonnet 116.
  • the seat holder 104 is housed in the seat holder accommodating portion 112.
  • the locking step 113 of the seat 103 and the locking step 114 of the seat holder 104 are aligned, and the seat 103 is detachably fixed to the body 102.
  • a communication hole 115 is formed in the sheet holder 104, and the fluid that has passed through the communication hole 115 flows out from the outflow path 109.
  • the seat 103 is replaceable, but there is a gap (clearance) between the seat accommodating portion 111 and the seat 103, and the seat holder accommodating portion 112 and the seat holder 104 There is also a clearance between them. Due to this clearance, the seat 103 and the seat holder 104 may be displaced from each other during valve operation, which causes wear of these members. In particular, the higher the pressure of the fluid being handled, the more likely this deviation will affect valve performance. In order not to cause this deviation, it is necessary to make the pressing force from above by the bonnet 116 very high, but there is a limit to that as well. Further, the diaphragm valve 100 shown in FIG.
  • valve body 9 has a valve body of a type in which a seat holder accommodating portion 112 is formed in the body 102 and a raised portion 107 for holding the seat 103 is formed, and the seat is fixed by crimping.
  • the shape is different. For this reason, it is necessary to manufacture a valve body different from the valve body used for the crimping type diaphragm valve that does not require replacement of the seat, which causes a problem that the yield deteriorates and it is difficult to reduce the product cost. there were.
  • An object of the present invention is a diaphragm valve having an easily replaceable seat, which is unlikely to shift the seat during valve operation and can be used as a valve body used for a crimp type diaphragm valve. It is to provide a diaphragm valve with a holder.
  • the present invention (1) is attached to and detached from a body provided with a fluid inflow passage and a fluid outflow passage, a recess forming a valve chamber in the body, and a peripheral edge of the bottom of the recess where the fluid inflow passage opens.
  • a sheet that is removably arranged, a sheet holder that is detachably arranged on the body and holds the sheet, a diaphragm that opens and closes the fluid inflow passage by being pressed and separated from the sheet, and the diaphragm.
  • the seat has a step on the upper outer periphery and the seat holder is convex downward with a through hole through which the seat penetrates in the center. It is conical and has a flow hole on the slope through which fluid passes, the upper surface of the outer edge of the seat holder is in contact with the lower surface of the outer edge of the diaphragm, and the lower surface of the outer edge of the seat holder is the outer edge of the bottom of the recess.
  • the sheet holder is arranged so as to be in contact with the surface, the lower surface of the inner edge of the sheet holder is in contact with the upper surface on the large diameter side of the step of the sheet, and the sheet is pressed downward by the bonnet. It is a characteristic diaphragm valve.
  • the diaphragm valve described in Patent Document 1 is provided with a seat holder for fixing the seat, but the means for preventing the horizontal displacement is due to the frictional resistance caused by the pressing force from above by the bonnet. there were. Therefore, since the frictional resistance is small, it is not sufficient when the pressure of the fluid is large.
  • the diaphragm valve of the present invention (1) has a seat holder like the diaphragm valve described in Patent Document 1, and the number of component elements is the same as that of the diaphragm valve described in Patent Document 1, but the seat holder has a spring. It is different to have sex. It is a feature of the present invention (1) that the seat holder has a spring property.
  • the seat in the diaphragm valve of the present invention (1) has a step on the upper outer peripheral portion, and the seat holder has a downwardly convex conical ring shape having a through hole through which the seat penetrates in the center, and fluid flows on the slope.
  • the upper surface of the outer edge of the seat holder is in contact with the lower surface of the outer edge of the diaphragm, and the lower surface of the outer edge of the seat holder is in contact with the outer edge surface of the bottom of the recess.
  • the seat holder is arranged so that the lower surface of the inner edge of the seat holder is in contact with the upper surface on the large diameter side of the step of the seat and the seat is pressed downward by the bonnet.
  • the force from the top to the bottom by the bonnet bends the seat holder, and the natural height of the seat holder becomes smaller.
  • a force that tries to return to the original position is generated in the seat holder compressed in the height direction, and the generated force presses the sheet downward, so that the sheet is prevented from laterally displaced.
  • the present invention (2) is the diaphragm valve of the present invention (1), wherein the seat holder is a disc spring.
  • the diaphragm valve of the present invention (2) uses a disc spring that is generally used for the seat holder.
  • Belleville springs are widely used as parts of structural members, and by using this general-purpose product as a seat holder, the manufacturing cost can be reduced.
  • the seat can be easily replaced, and the seat can be prevented from laterally shifting while the valve is in operation. Further, since the seat holder has a downwardly convex conical ring shape and does not have a peculiar shape, it can also be used as a valve body used for a crimping type diaphragm valve.
  • Example 1 It is a partial cross-sectional view of Example 1 of the diaphragm valve with a seat holder.
  • the plan view (A) and the sectional view (B) of the seat holder used for the diaphragm valve of Example 1 are shown.
  • a perspective view (A) of another embodiment of the seat holder that can be used for the diaphragm valve with the seat holder and a plan view (B) of still another embodiment are shown.
  • It is an end view which shows the state just before attaching a sheet to a body.
  • sectional drawing which shows the state which arranged the seat holder in the body which attached the seat.
  • FIG. 1 is a partial cross-sectional view of a diaphragm valve with a seat holder according to the first embodiment of the present invention.
  • the diaphragm valve 1 includes a valve body 10 and an actuator 65.
  • a fluid inflow passage 11 and a fluid outflow passage 12 are formed in the valve body 10, a recess 13 including a valve chamber is formed, and a diaphragm 40 is arranged.
  • a diaphragm retainer 51 that presses the central portion of the diaphragm 40 is provided at the tip of the stem 50 that is moved up and down by the actuator 65.
  • the diaphragm 50 opens and closes the fluid inflow passage 11 in the body 10 by being pressed and separated from the sheet 20 detachably arranged on the peripheral edge of the fluid inflow passage 11 at the bottom of the recess 13 by the diaphragm retainer 51.
  • a sheet holder 30 for holding the sheet 20 is arranged around the sheet 20. The diaphragm 40 and the seat holder 30 are firmly fixed to the body 10 by applying a force from above by the bonnet 60.
  • FIG. 2 shows a plan view (A) and a cross-sectional view (B) of the seat holder used for the diaphragm valve of the first embodiment.
  • the seat holder 30 When the upper surface of the seat holder 30 is viewed, it has an annular shape, a through hole 31 is formed in the center, and the inner edge side surface of the through hole 31 abuts on the step 21 of the sheet 20 housed in the seat accommodating portion 16. Penetrate like.
  • the outer edge has an upper surface 33 of the outer edge, and a slope 36 is formed between the outer edge and the inner edge.
  • the slope 36 is provided with four flow holes 32 through which a fluid flows.
  • the number and shape of the flow holes are not limited to this embodiment, and various ones can be selected.
  • the number and shape of the flow holes are not limited to this embodiment, and various ones can be selected.
  • the lower surface 34 of the outer edge and the lower surface 35 of the inner edge appear.
  • the distance between the upper surface 33 of the outer edge and the lower surface 34 of the outer edge is reduced because it is pressed in the vertical direction by the bonnet 60 when it is set in the diaphragm valve 1.
  • the repulsive force causes the seat holder 30 to expand in the vertical direction, and the seat holder 30 exhibits springiness.
  • FIG. 3A shows a perspective view of a seat holder 30'of another embodiment that can be used for a diaphragm valve with a seat holder.
  • a through hole 31' is formed in the center, and 18 flow holes 32' are formed on the slope 36'. Between the flow hole 32'and the through hole 31', 18 flow grooves 37 are formed so as to connect the through hole 31'and the flow hole 32'.
  • the fluid can flow from the through hole 31'to the flow hole 32'and the flow groove 37 to the fluid outflow passage 12. Further, the lower surface 35'of the inner edge and the lower surface 34'of the outer edge are formed at the locations shown in FIG. Further, FIG.
  • 3B is a plan view of yet another seat holder 30, and a plurality of grooves 38 (four locations in FIG. Example) are formed from the through holes 31 of the seat holder 30 in FIG. 2A, and the seat holder 30 is formed.
  • the springiness of the is improved. Further, by providing the groove 38 and the distribution groove 37, the pressed portion of the sheet 20 does not reach the entire circumference, so that the rotation of the sheet 20 can be effectively prevented.
  • the spring strength of the seat holders 30 and 30'and the flow rate of the fluid per unit time vary depending on the number and size of the flow holes 32 and 32'and the flow grooves 37. Further, since the spring strength of the seat holders 30 and 30'can be adjusted by the thickness of the seat holders 30 and 30', the desired spring strength and the desired spring strength per unit time can be obtained by appropriately changing the combination of these parameters. It is possible to use the flow rate of the fluid.
  • FIG. 4 is an end view showing a state immediately before the seat 20 is attached to the body 10.
  • the body 10 is formed with a seat accommodating portion 16 for accommodating the seat 20.
  • the bottom of the recess 13 has a bottom 14 of the recess, the outer edge of which has an outer edge surface 15.
  • a protruding portion 17 is formed on the inner circumference near the bottom of the recess 13 to ensure the stability of the seat holder 30 during temporary assembly, but it is not always necessary to form the protruding portion 17. ..
  • a step 21 is formed on the outer peripheral side of the sheet 20, and an upper surface 22 of the step is formed at a position on the upper surface of the step 21.
  • the seat 20 is formed so that it can be accommodated in the seat accommodating portion 16 without press-fitting or the like, but the clearance is prevented from becoming too large.
  • the body 10 can also be used as a valve body used for a crimp type diaphragm valve.
  • FIG. 5 is a cross-sectional view showing a state in which the seat holder 30 is arranged on the body 10 in which the seat 30 is mounted on the seat accommodating portion 16. Utilizing the springiness of the seat holder 30, the outer periphery of the seat holder 30 is arranged so as to overcome the protrusion 17. The upper surface 33 of the outer edge is in contact with the lower surface of the protrusion 17, but it is not always necessary to be in contact with the lower surface depending on the design. There is a gap between the lower surface 34 of the outer edge and the outer edge surface 15. This gap is necessary for the seat holder 30 to have a spring property at this assembly stage.
  • FIG. 6 is a cross-sectional view showing a state in which the diaphragm 40 and the bonnet 60 are placed on the body 10 on which the seat holder 30 is arranged. Even in this assembly stage, there is a gap between the lower surface 34 of the outer edge and the outer edge surface 15. The outer surface of the lower end of the bonnet 60 is scraped to form a bonnet large diameter portion 61 and a bonnet small diameter portion 62, and a bonnet large diameter portion bottom surface 63 which is the bottom surface of the bonnet large diameter portion 61 is formed.
  • FIG. 7 is a cross-sectional view showing a state in which the diaphragm 40 and the seat holder 30 are installed in a completed state by pressing the bonnet 60 downward.
  • the lower surface 34 of the outer edge of the seat holder 30 is in contact with the outer edge surface 15 of the body 10, and the seat holder 30 is in a bent state. Due to the restoring force that tries to return to the original state from this bent state, the lower surface 35 of the inner edge of the seat holder 30 exerts a force that pushes the upper surface 22 of the step of the seat 20 downward, so that even when the valve is operating.
  • the seat does not come off, and lateral slippage and rotation are suppressed.
  • the diaphragm valve provided with the seat holder according to the present invention is less likely to cause lateral displacement of the seat even when a high-pressure fluid is passed, and the seat can be easily replaced.
  • Diaphragm valve 10 Body 11: Fluid inflow passage 12: Fluid outflow passage 13: Recess 14: Bottom of the recess 15: Outer edge surface 16: Seat accommodating portion 17: Protruding portion 20: Seat 21: Step 22: Step Top surfaces 30, 30': Sheet holders 31, 31': Through holes 32, 32': Flow holes 33: Outer edge upper surface 34, 34': Outer edge lower surface 35, 35': Inner edge lower surface 36, 36': Slope 37 : Flow groove 40: Diaphragm 50: Stem 51: Diaphragm presser 60: Bonnet 61: Bonnet large diameter 62: Bonnet small diameter 63: Bonnet large diameter bottom 65: Actuator 70, 100: Diaphragm valve 71, 102: Body 72, 108: Fluid inflow passage 73, 109: Fluid outflow passage 74: Recess 75, 103: Seat 76, 105: Diaphragm 77: Diaphragm retainer 78, 116: Bonnet 79, 117: Stem 80

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne une soupape à diaphragme dotée d'un support de siège ayant une faible probabilité qu'un siège soit déplacé pendant le fonctionnement de la soupape. Une soupape à diaphragme (1) comprend un corps (10) ; un siège (20) ; un support de siège (30) ; un diaphragme (40) ; et un capot (60). Le siège (20) a une différence de pas (21) dans une partie périphérique externe du côté supérieur. Le support de siège (30) a une forme d'anneau conique convexe vers le bas ayant un trou traversant (31), à travers lequel le siège (20) pénètre au centre, et est pourvu d'un trou d'écoulement (32) dans une surface inclinée (36). Une surface supérieure de bord externe (33) du support de siège (30) est mise en contact avec une surface inférieure de bord externe (34) de la membrane (40), et la surface inférieure de bord externe (34) du support de siège (30) est mise en contact avec une surface de bord externe (15) au fond d'une partie évidée (13). Le support de siège (30) est disposé de façon à amener une surface inférieure de bord interne (35) du support de siège (30) en contact avec une surface supérieure côté grand diamètre (22) de la différence de pas (21) du siège et pour amener le capot (60) à presser le siège (20) vers le bas.
PCT/JP2021/030486 2020-10-20 2021-08-20 Soupape à diaphragme WO2022085289A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022556439A JP7426149B2 (ja) 2020-10-20 2021-08-20 ダイヤフラムバルブ
KR1020237016413A KR20230085201A (ko) 2020-10-20 2021-08-20 다이어프램 밸브

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020175840 2020-10-20
JP2020-175840 2020-10-20

Publications (1)

Publication Number Publication Date
WO2022085289A1 true WO2022085289A1 (fr) 2022-04-28

Family

ID=81291258

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/030486 WO2022085289A1 (fr) 2020-10-20 2021-08-20 Soupape à diaphragme

Country Status (4)

Country Link
JP (1) JP7426149B2 (fr)
KR (1) KR20230085201A (fr)
TW (1) TW202221246A (fr)
WO (1) WO2022085289A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110140014A1 (en) * 2007-06-12 2011-06-16 Luxembourg Patent Company S.A. High pressure diaphragm valve with exchangeable seat assembly
KR20140105182A (ko) * 2013-02-22 2014-09-01 이종천 솔레노이드 밸브
JP2019108920A (ja) * 2017-12-18 2019-07-04 株式会社キッツエスシーティー ダイヤフラムバルブ

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4700234B2 (ja) 2001-07-31 2011-06-15 株式会社フジキン ダイヤフラム弁
JP2010144765A (ja) 2008-12-16 2010-07-01 Hamlet Motoyama Japan:Kk ダイヤフラム弁
WO2014120997A1 (fr) 2013-02-01 2014-08-07 Swagelok Company Robinet à membrane comprenant un support de siège de membrane soudé

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110140014A1 (en) * 2007-06-12 2011-06-16 Luxembourg Patent Company S.A. High pressure diaphragm valve with exchangeable seat assembly
KR20140105182A (ko) * 2013-02-22 2014-09-01 이종천 솔레노이드 밸브
JP2019108920A (ja) * 2017-12-18 2019-07-04 株式会社キッツエスシーティー ダイヤフラムバルブ

Also Published As

Publication number Publication date
JPWO2022085289A1 (fr) 2022-04-28
KR20230085201A (ko) 2023-06-13
JP7426149B2 (ja) 2024-02-01
TW202221246A (zh) 2022-06-01

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