WO2012131751A1 - Structure de clé de soupape - Google Patents

Structure de clé de soupape Download PDF

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Publication number
WO2012131751A1
WO2012131751A1 PCT/JP2011/001784 JP2011001784W WO2012131751A1 WO 2012131751 A1 WO2012131751 A1 WO 2012131751A1 JP 2011001784 W JP2011001784 W JP 2011001784W WO 2012131751 A1 WO2012131751 A1 WO 2012131751A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pin
press
valve shaft
pins
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.)
Ceased
Application number
PCT/JP2011/001784
Other languages
English (en)
Japanese (ja)
Inventor
克典 高井
横山　雅之
暁 長谷川
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2011/001784 priority Critical patent/WO2012131751A1/fr
Priority to JP2013506817A priority patent/JP5279967B2/ja
Publication of WO2012131751A1 publication Critical patent/WO2012131751A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves

Definitions

  • This invention relates to a valve fastening structure for fastening a valve having an insertion hole and a valve shaft inserted through the insertion hole with a pin.
  • Patent Documents 1 and 2 pin press-fitting holes are drilled in the valve and the valve shaft, respectively, the valve shaft is inserted into the valve insertion hole, the pin press-fitting holes are aligned at the same position, and one pin is press-fitted. And concluded.
  • the conventional valve fastening structure is configured to press-fit one pin into each pin press-fitting hole of the valve and the valve shaft, it is necessary to use a long pin that can penetrate the valve and the valve shaft, and the pressure input is also increased. Oops. Also, if the pin press-fitting hole on the front side of the valve is misaligned with the pin press-fitting hole on the valve shaft, or if the pin press-fitting hole on the back side of the valve is misaligned with the pin press-fitting hole on the valve shaft, the pin cannot be press-fit, Even if it was able to be press-fitted, there were cases where galling occurred or the pin buckled.
  • the present invention has been made to solve the above-described problems, and while reducing the pressure input of the pin to the valve and the valve shaft, it secures the fastening force and prevents fluid leakage from the portion where the pin is press-fitted.
  • the purpose is to suppress.
  • the valve fastening structure of the present invention includes a first pin press-fitting hole that passes through the valve shaft insertion hole to the front and back of the valve, a second pin press-fitting hole that passes through the valve shaft, and the valve shaft into the valve shaft insertion hole.
  • a pair of pins that are press-fitted into the first pin press-fitting hole and the second pin press-fitting hole arranged in the coaxial position in the inserted state from the front and back sides of the valve and fasten the valve and the valve shaft. It is.
  • valve fastening structure of the present invention includes a first pin press-fitting hole that passes through the valve shaft insertion hole and penetrates the front and back of the valve, and a pair of third recesses that are recessed from the opposed positions of the outer peripheral surface of the valve shaft toward the center side.
  • a pin press-fitting hole and a first pin press-fitting hole and a pair of third pin press-fitting holes arranged at coaxial positions with the valve shaft inserted through the valve shaft insertion hole are press-fitted from the front and back sides of the valve.
  • a pair of pins for fastening the valve and the valve shaft are press-fitted from the front and back sides of the valve.
  • the length of the pin can be shortened by fastening the valve and the valve shaft with a pair of pins that are press-fitted from both the front and back sides of the valve, compared with the case of fastening with a single pin. Can be reduced. Therefore, it is not necessary to make the pin into a tapered shape, and it is possible to secure the fastening force by press-fitting each of the two pins without a gap, and to suppress fluid leakage.
  • FIG. 1 It is a front view which shows the structure of the butterfly valve which concerns on Embodiment 1 of this invention. It is sectional drawing which cut
  • FIG. It is sectional drawing which cut
  • Embodiment 1 FIG.
  • the butterfly valve shown in FIGS. 1 to 3 includes a housing 10 that is interposed in a pipe (not shown) that circulates a fluid, a valve shaft 20 that is rotatably held in the housing 10, and a valve shaft 20 that is integral with the valve shaft 20.
  • a valve 30 that rotates to open and close the fluid passage 11 and a pair of pins 40 and 41 that fasten the valve shaft 20 and the valve 30 are provided.
  • the front view of FIG. 1 and the cross-sectional view of FIG. 2 show a state where the valve 30 is closed
  • the cross-sectional view of FIG. 3 shows a state where the valve 30 is open.
  • the surface facing the upstream side in the state in which the valve 30 is closed is referred to as the front side
  • the surface facing the downstream side is referred to as the back side.
  • the housing 10 is provided with a fluid passage 11, and a substantially annular step (step) is provided on the inner peripheral surface of the fluid passage 11 to form valve seats 12 and 13.
  • bearing portions 14 and 15 are provided at two locations on the upper and lower sides of the housing 10, and the bearing portions 14 and 15 hold the valve shaft 20 rotatably. Only one of the bearing portions 14 and 15 may be provided.
  • the surface of one wing of the valve 30 abuts on the valve seat 12 with the rotation center axis X as a boundary, and the back surface of the other wing abuts on the valve seat 13. Close.
  • the valve 30 has a substantially circular shape, and a valve shaft insertion hole 31 that penetrates in the radial direction as the rotation center axis X, and a pair of coaxial pins that penetrate the valve shaft insertion hole 31 and pass through the front and back of the valve 30.
  • press-fitting holes first pin press-fitting holes
  • 32 and 33 press-fitting holes
  • the rod-shaped valve shaft 20 has a pin press-fitting hole (second pin press-fitting hole) 21 penetrating in a direction orthogonal to the rotation center axis X.
  • the pin press-fitting hole 21 and the pin press-fitting holes 32 and 33 have substantially the same diameter.
  • valve shaft 20 When the valve shaft 20 is inserted into the valve shaft insertion hole 31 of the valve 30, the direction and position of the pin press-fit holes 32 and 33 and the pin press-fit hole 21 are aligned. Then, the pin 40 is press-fitted into the pin press-fitting holes 32 and 21 from the front side of the valve 30, and the pin 41 is press-fitted into the pin press-fitting holes 33 and 21 from the back side of the valve 30. Fasten to valve 30. Thereby, the valve shaft 20 and the valve 30 are fastened.
  • the respective ends of the pins 40 and 41 are press-fitted to a position where they enter the inside of the outer surface of the valve 30.
  • the respective end portions of the pins 40 and 41 are positioned so as to be flush with the seating surfaces 34 and 35 of the pin press-fitting holes 32 and 33. Press fit. This prevents the pins 40 and 41 from protruding into the fluid passage 11 and makes it difficult to block the flow of fluid (indicated by arrows in FIG. 3) when the valve 30 is opened.
  • the butterfly valve according to the first embodiment is used for an EGR (Exhaust Gas Recirculation) valve that circulates high-temperature exhaust gas (up to 800 ° C.) or the like (members constituting the valve shaft 20 and the valve 30)
  • EGR exhaust Gas Recirculation
  • the pin 40 and 41 are made of the same member as that of heat-resistant steel such as stainless steel) so that the linear expansion coefficient is made the same, so that the fastening force between the valve shaft 20 and the valve 30 is weakened or the pins 40 and 41 It is possible to prevent the end portion from protruding to the fluid passage 11.
  • FIG. 4 is a cross-sectional view of the assembled valve shaft 20 and valve 30 taken along the line AA in FIG.
  • a press-fitting jig 50 and a support jig 51 are used for pin press-fitting.
  • the seat surfaces 34 and 35 provided at the opening edge portions of the pin press-fitting holes 32 and 33 are used as a stopper of the press-fitting jig 50 and a load support portion at the time of press-fitting.
  • the press-fitting jig 50 When the pin 41 is press-fitted into the pin press-fitting holes 33, 21, the press-fitting jig 50 is brought into contact with the end face of the pin 41 to apply a load in the direction of the pin press-fitting holes 33, 21. Press-fit until seated. Thereby, the end surface of the pin 41 press-fitted into the pin press-fitting holes 33 and 21 is flush with the seating surface 35. Further, when the press-fitting jig 50 is seated on the seat surface 35, the press-fitting load value increases rapidly, and therefore it is possible to determine whether or not press-fitting is complete based on the press-fitting load value. Therefore, it is not necessary to finely manage the press-fitting position, and assembly management can be facilitated.
  • the support jig 51 is seated on the seat surface 34 of the pin press-fitting hole 32 on the opposite side, and the load applied to the valve shaft 20 and the valve 30 is received by the support jig 51 when the pin is press-fitted.
  • the other pin 41 may be press-fitted into the pin press-fitting holes 32 and 21 in the same manner.
  • the pins 40 and 41 may be press-fitted by other methods. Further, caulking (high spin caulking, etc.), caulking, brazing, welding, or the like may be performed as a retaining after pin press-fitting.
  • the two pins 40 and 41 are press-fitted from both sides of the valve shaft 20 and the valve 30, compared with the case where one pin is press-fitted from one side of the valve shaft 20 and the valve 30 as in the conventional structure described above.
  • Short pins 40 and 41 can be used. For this reason, compared with the case where one long pin is press-fit, press-fit can be reduced. As a result, the assemblability can be improved.
  • a large pressure input is not required, not only a tapered pin but also a pin having any shape such as a cylindrical straight pin and a grooved pin having a groove on the peripheral surface can be used.
  • the pins 40 and 41 illustrated in FIGS. 1 to 4 are straight pins.
  • the valve fastening structure includes the pin press-fit holes 32 and 33 that pass through the valve shaft insertion hole 31 to the front and back of the valve 30, and the pin press-fit hole 21 that passes through the valve shaft 20.
  • the valve shaft 20 is inserted into the pin press-fitting holes 32 and 33 and the pin press-fitting hole 21 which are arranged at the coaxial positions in a state where the valve shaft 20 is inserted into the valve shaft insertion hole 31 from both the front and back sides of the valve 30.
  • a pair of pins 40 and 41 for fastening the shaft 20 is provided. For this reason, compared with the case where it fastens with one pin conventionally, it becomes possible to shorten the length of a pin and can reduce pressure input.
  • the seat surfaces 34 and 35 are formed at the opening edge portions of the pin press-fit holes 32 and 33, respectively. Therefore, one of the seat surfaces can be used as a stopper for the press-fitting jig 50 for press-fitting the pins, and the other can be used as a seat for seating the support jig 51 that receives the press-fitting load, thereby improving the assemblability.
  • one end of each of the pins 40 and 41 is flush with the respective seating surfaces 34 and 35 of the pin press-fitting holes 32 and 33, and the other end is separated from each other.
  • the pins 40 and 41 stay on the inner side of the outer surface of the valve 30 and can be structured not to block the fluid.
  • the pins do not contact each other, even if a press-fitting defect or the like occurs in one pin, the influence on the other pin can be avoided.
  • the pins 40 and 41 are positioned at least inside the outer surface of the valve 30, so that the pins 40 and 41 are the same as described above. Can be made into a structure that does not block the fluid, and a smooth flow can be obtained.
  • FIG. 5 is a cross-sectional view of the valve shaft 20 and the valve 30 of the butterfly valve according to Embodiment 2 cut at a position corresponding to the line AA shown in FIG. 5, parts that are the same as or equivalent to those in FIGS. 1 to 4 are given the same reference numerals, and descriptions thereof are omitted.
  • the heads 42 and 43 are formed by expanding one end of each of the pins 40 and 41 that are columnar straight pins (or grooves and the like).
  • the pins 40 and 41 are press-fitted into the pin press-fitting holes 32 and 33, and the heads 42 and 43 are seated on the seats 34 and 35, thereby increasing the overlap between the pins 40 and 41 and the front and back of the valve 30.
  • 41 and the valve 30 constitute a labyrinth, so that intrusion of fluid can be further suppressed.
  • the heads 42 and 43 do not have to be flush with the seating surfaces 34 and 35, and may be at least inside the outer surface of the valve 30.
  • the pins 40 and 41 may be press-fitted using the press-fitting jig 50 and the support jig 51.
  • a recess may be provided on each surface of the press-fitting jig 50 and the support jig 51 that contacts the seating surfaces 34 and 35, and the heads 42 and 43 may be accommodated in the recess.
  • one end of the pins 40 and 41 is enlarged in diameter to provide the heads 42 and 43, and these heads 42 and 43 are seated on the seating surfaces 34 and 35 of the pin press-fit holes 32 and 33. Since this part is made to contact
  • FIG. 6 is a cross-sectional view of the valve shaft 20 and the valve 30 of the butterfly valve according to Embodiment 3 cut at a position corresponding to the line AA shown in FIG.
  • parts that are the same as or equivalent to those in FIGS. 1 to 4 are given the same reference numerals, and descriptions thereof are omitted.
  • FIG. 6 parts that are the same as or equivalent to those in FIGS. 1 to 4 are given the same reference numerals, and descriptions thereof are omitted.
  • depressions are formed from the respective opposed positions of the outer peripheral surface of the valve shaft 20 to the center, and the depressions are used as pin press-fitting holes (a pair of third pin press-fitting holes) 22 and 23. Since the pin press-fitting holes 22 and 23 are not penetrated, the portion sandwiched between the pin press-fitting holes 22 and 23 of the valve shaft 20 becomes a partition wall 24 so that fluid does not leak directly from one side to the other. Therefore, leakage can be suppressed more than when the pin press-fitting holes 22 and 23 are penetrated.
  • straight pins are used for the pins 40 and 41.
  • the present invention is not limited to this, and any shape such as a grooved pin or a headed pin as described in the second embodiment may be used.
  • a pin may be used.
  • the fluid can be prevented from entering the pin press-fitting holes 22 and 23, so that leakage can be further suppressed in combination with the effect of providing the partition wall 24.
  • the valve fastening structure includes the pair of pin press-fitting holes 22 and 23 that are recessed from the respective opposed positions of the outer peripheral surface of the valve shaft 20 toward the center, and the pair of pins 40 and 41 includes
  • the valve 30 and the valve shaft 20 are fastened by being press-fitted into the pin press-fit holes 32 and 33 and the pin press-fit holes 22 and 23 from the front and back sides of the valve 30, respectively.
  • the pressure input of the pins 40 and 41 can be reduced, and a fastening force can be secured on each of the front side and the back side of the valve 30.
  • no gap is formed between the pins 40, 41 and the pin press-fit holes 32, 33, 22, 23, and the pin press-fit holes 22, 23 do not penetrate and are partitioned by the partition wall 24, fluid leakage is further suppressed. can do.
  • the configuration in which the valve shaft and the valve are fastened at one place using a pair of pins is not limited to this, and a plurality of pairs of pins are used. You may make it the structure fastened in several places.
  • the butterfly type valve has been described as an example.
  • the present invention is not limited to this, and the valve shaft is inserted into a valve shaft insertion hole provided in the valve and fastened to each other.
  • the valve fastening structure of the present invention is applicable to any fluid control valve.
  • the invention of the present application is within the scope of the invention, and can be freely combined with each embodiment, modified with any component in each embodiment, or omitted with any component in each embodiment. Is possible.
  • the valve fastening structure according to the present invention secures the fastening force while reducing the pressure input, and further prevents the fluid from leaking from the portion where the pin is press-fitted. It is suitable for use in a fluid control valve used in the environment, a fluid control valve having a large valve diameter and valve shaft diameter, and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

La présente invention a trait à une soupape (30) qui est dotée de trous d'ajustage à force de tige (32, 33) qui passent de l'avant vers l'arrière à travers un trou d'insertion de tige de soupape (31). Une tige de soupape (20) est dotée d'un trou d'ajustage à force de tige (21) qui permet à la tige de soupape (20) d'être coaxiale avec les trous d'ajustage à force de tige (32, 33) lorsqu'elle est insérée dans le trou d'insertion de tige de soupape (31). Une tige (40) est ajustée à force dans les trous d'ajustage à force de tige (32, 21) depuis le côté avant de la soupape (30), et une tige (41) est ajustée à force dans les trous d'ajustage à force de tige (33, 21) depuis le côté arrière, ce qui permet de fixer la soupape (30) et la tige de soupape (20).
PCT/JP2011/001784 2011-03-25 2011-03-25 Structure de clé de soupape Ceased WO2012131751A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2011/001784 WO2012131751A1 (fr) 2011-03-25 2011-03-25 Structure de clé de soupape
JP2013506817A JP5279967B2 (ja) 2011-03-25 2011-03-25 バルブ締結構造

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/001784 WO2012131751A1 (fr) 2011-03-25 2011-03-25 Structure de clé de soupape

Publications (1)

Publication Number Publication Date
WO2012131751A1 true WO2012131751A1 (fr) 2012-10-04

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PCT/JP2011/001784 Ceased WO2012131751A1 (fr) 2011-03-25 2011-03-25 Structure de clé de soupape

Country Status (2)

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JP (1) JP5279967B2 (fr)
WO (1) WO2012131751A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542580A (zh) * 2016-06-27 2018-01-05 埃贝斯佩歇排气技术有限责任两合公司 排气活门
JP2018031451A (ja) * 2016-08-26 2018-03-01 アズビル株式会社 調節弁、弁体、および弁軸
CN110030395A (zh) * 2017-11-28 2019-07-19 阿自倍尔株式会社 阀轴与阀芯的销紧固结构
JP2024011357A (ja) * 2022-07-14 2024-01-25 東京エレクトロン株式会社 プラズマ処理装置及びプラズマ処理方法
US20250172112A1 (en) * 2023-02-17 2025-05-29 Power Packer North America, Inc. Exhaust gas recirculation valve assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101876982B1 (ko) * 2017-02-28 2018-07-10 밸프 주식회사 양방향 무(無)시트 버터플라이밸브
KR101922402B1 (ko) * 2017-12-22 2018-11-27 모은산업 주식회사 기능성 버터플라이 밸브

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55175663U (fr) * 1979-06-04 1980-12-16
JPS5891970A (ja) * 1981-11-24 1983-06-01 Kubota Ltd 弁
JPH0214871U (fr) * 1988-07-11 1990-01-30
JPH0814407A (ja) * 1994-06-28 1996-01-16 Fuji Oozx Inc バタフライバルブ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55175663U (fr) * 1979-06-04 1980-12-16
JPS5891970A (ja) * 1981-11-24 1983-06-01 Kubota Ltd 弁
JPH0214871U (fr) * 1988-07-11 1990-01-30
JPH0814407A (ja) * 1994-06-28 1996-01-16 Fuji Oozx Inc バタフライバルブ

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107542580A (zh) * 2016-06-27 2018-01-05 埃贝斯佩歇排气技术有限责任两合公司 排气活门
US20180128189A1 (en) * 2016-06-27 2018-05-10 Eberspächer Exhaust Technology GmbH & Co. KG Exhaust gas flap
US10690063B2 (en) * 2016-06-27 2020-06-23 Eberspächer Exhaust Technology GmbH & Co. KG Exhaust gas flap
CN107542580B (zh) * 2016-06-27 2023-11-24 普瑞姆有限公司 排气活门
JP2018031451A (ja) * 2016-08-26 2018-03-01 アズビル株式会社 調節弁、弁体、および弁軸
CN110030395A (zh) * 2017-11-28 2019-07-19 阿自倍尔株式会社 阀轴与阀芯的销紧固结构
JP2024011357A (ja) * 2022-07-14 2024-01-25 東京エレクトロン株式会社 プラズマ処理装置及びプラズマ処理方法
JP7816878B2 (ja) 2022-07-14 2026-02-18 東京エレクトロン株式会社 プラズマ処理装置
US20250172112A1 (en) * 2023-02-17 2025-05-29 Power Packer North America, Inc. Exhaust gas recirculation valve assembly

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Publication number Publication date
JPWO2012131751A1 (ja) 2014-07-24
JP5279967B2 (ja) 2013-09-04

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