WO2017171007A1 - リリーフ弁 - Google Patents
リリーフ弁 Download PDFInfo
- Publication number
- WO2017171007A1 WO2017171007A1 PCT/JP2017/013605 JP2017013605W WO2017171007A1 WO 2017171007 A1 WO2017171007 A1 WO 2017171007A1 JP 2017013605 W JP2017013605 W JP 2017013605W WO 2017171007 A1 WO2017171007 A1 WO 2017171007A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve seat
- valve
- fluid
- ring
- inflow passage
- Prior art date
Links
Images
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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
-
- 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
Definitions
- This invention relates to a relief valve.
- a relief valve As a relief valve, a body provided with a recess opening upward, a fluid inflow passage opening at the bottom of the recess, and a fluid outflow passage opening at the side of the recess, and an annular valve provided at the opening of the fluid inflow passage A seat, a valve body that is biased downward by a biasing member to close the opening of the valve seat, and an O-ring that is fitted in a recess of the body and seals between the valve seat and the valve body.
- Patent Document 1 When the fluid pressure in the fluid inflow passage is below a predetermined value, the valve body is pressed against the valve seat to close the fluid inflow passage, and when the fluid pressure exceeds the predetermined value, the valve body Is moved upward by the fluid pressure, so that the fluid inflow passage is opened (Patent Document 1).
- An object of the present invention is to provide a relief valve with improved sealing performance.
- a relief valve includes a body provided with a recess opening upward, a fluid inflow passage opening in the bottom surface of the recess and a fluid outflow passage opening in the side surface of the recess, and an opening of the fluid inflow passage.
- An annular valve seat provided; a valve body biased downward by a biasing member to close the opening of the valve seat; and the valve seat and the valve body fitted into the recess of the body
- An O-ring that seals between the fluid inflow passage, and when the fluid pressure in the fluid inflow passage is below a predetermined value, the fluid inflow passage is closed by pressing the valve element against the valve seat.
- valve body When the fluid pressure exceeds a predetermined value, the valve body is moved upward by the fluid pressure so that the fluid inflow passage is opened, and the valve seat is Removably fit into the recess in the body
- An O-ring presser holding the O-ring between the valve seat and the valve seat is fixed to the body, and a lower end portion of the valve body includes an upper end surface of the valve seat and an O-ring.
- a communication passage is provided which is in contact with a part and communicates the space surrounded by the body, the valve seat, and the O-ring with the fluid inflow passage.
- the sealing performance is secured by the O-ring that seals between the valve seat and the valve body. If the O-ring deteriorates due to changes over time, there is a risk of leakage.
- the relief valve of the present invention since the fluid in the fluid inflow passage flows into the space formed by the body, the valve seat, and the O-ring through the communication passage, the pressure in the space rises and the O-ring is A pressure (back pressure) is applied between the seat and the valve body. Thereby, the sealing performance of the opening of the fluid inflow passage is improved.
- an appropriate groove or through hole may be formed in the valve seat or / and the body, and the communication path may include, for example, a groove provided on the bottom surface of the valve seat.
- the valve seat is a separate member from the body and is easy to process. By forming a groove in the valve seat, it is possible to obtain the communication path with less processing effort.
- top and bottom refer to the top and bottom of FIG. 1 (the fluid inflow passage side of the relief valve is the bottom and the opposite side is the top), but this top and bottom is for convenience. Sometimes used upside down or upside down.
- the fluid in the fluid inflow passage flows into the space formed by the body, the valve seat, and the O-ring through the communication passage, the pressure in the space rises, and the O-ring is Since a pressure (back pressure) is applied between the seat and the valve body, the sealing performance of the opening of the fluid inflow passage is improved.
- FIG. 1 is a longitudinal sectional view showing an embodiment of a relief valve according to the present invention.
- FIG. 2 is an enlarged view of a main part of FIG.
- FIG. 3 is an enlarged perspective view of the valve seat.
- FIG. 1 shows the entirety of one embodiment of the relief valve of the present invention.
- the relief valve (1) is for maintaining a fluid pressure below a predetermined value by allowing a part of the fluid to flow out when the fluid pressure in the fluid inflow passage (2a) exceeds a predetermined value.
- the body (2) having the fluid inflow passage (2a), the fluid outflow passage (2b) and the recess (2c), and the peripheral edge of the upward opening of the fluid inflow passage (2a)
- the annular valve seat (3) provided on the valve seat (3) and the valve seat (3) are pressed (moved in the closing direction) or separated from the valve seat (3) (moved in the opening direction) to open the fluid inflow passage (2a).
- a rod-shaped valve body (4) that opens and closes, a cylindrical bonnet (5) that extends upward with the lower part inserted into the upper part of the recess (2c) of the body (2), and a lower end part at the upper end part of the bonnet (5)
- the fluid inflow passage (2a) opens downward and extends up and down, and its upper end opens at the bottom of the recess (2c) of the body (2).
- the fluid outflow passage (2b) opens to the right of the body (2) and extends left and right, and its left end opens to the right side of the recess (2c).
- the valve seat (3) is a separate member from the body (2), is detachably fitted into the recess (2c) of the body (2), and is received by the bottom surface of the recess (2c).
- the inner diameter of the valve seat (3) is slightly smaller than the diameter of the fluid inflow passage (2a).
- the valve seat (3) is provided integrally with an abutting portion (11) whose bottom surface abuts on the bottom surface of the recess (2c) of the body (2) and an upper side of the abutting portion (11). And a support portion (12) for supporting the above.
- the valve body (4) includes a large diameter portion (13) and a small diameter portion (14) which is located above the large diameter portion (13) and has an outer diameter smaller than that of the large diameter portion (13).
- the outer diameter of the large diameter portion (13) is slightly larger than the inner diameter of the valve seat (3).
- the bonnet (5) is fixed to the upper part of the body (2) by screwing the male screw part provided at the lower part thereof with the female screw part provided at the upper part of the recess (2c) of the body (2). Yes.
- On the inner periphery of the bonnet (5) there are a small-diameter inner peripheral portion (16) that slidably guides the small-diameter portion (14) of the valve body (4) and a large-diameter portion (13) of the valve body (4).
- a large-diameter inner peripheral portion (17) for slidably guiding the upper portion is provided.
- An annular recess (17a) is provided at the lower end of the large-diameter inner periphery (17) of the bonnet (5), and an X-ring supported by the retainer (18) is provided in this recess (17a). (19) is arranged.
- the cap (6) has a top wall (6a) closed with a plug (15).
- the cap (6) is fixed to the upper end portion of the bonnet (5) by screwing the lower end portion of the female screw portion provided on the inner periphery thereof with the upper end portion of the male screw portion provided on the upper portion of the bonnet (5).
- a lock nut (20) that prevents loosening of the screw alignment between the cap (6) and the bonnet (5) is screwed into the middle of the male screw portion of the bonnet (5).
- the compression coil spring (7) is sandwiched between the lower surface of the top wall (6a) of the cap (6) and the upper surface of the spring receiver (21) disposed in the bonnet (5).
- the lower surface of the spring receiver (21) is received by the upper end portion of the small diameter portion (14) of the valve body (4).
- the cap (6) and the body (2) are connected by the wire (10), so that the cap (6) is not fixed only to the bonnet (5), but the body (2) Is also fixed against.
- the O-ring retainer (9) is fixed to the lower part of the body (2) by screwing the male thread part provided at the upper part with the female thread part provided at the lower part of the recess (2c) of the body (2). Has been.
- this relief valve (1) when the pressure of the fluid in the fluid inflow passage (2a) rises and exceeds the elastic force of the compression coil spring (7) urging the valve body (4), the valve The body (4) moves upward, and thereby the fluid inflow passage (2a) is opened, and a part (or all) of the fluid passes through the recess (2c) of the body (2), and the fluid outflow passage (2b ) To the outside. As a result, the pressure of the fluid in the fluid inflow passage (2a) decreases, and the fluid inflow passage (2a) returns to the closed state by the elastic force of the compression coil spring (7) exceeding the pressure of the fluid. To do.
- the amount of screwing between the cap (6) and the bonnet (5) can be adjusted, and the elastic force of the compression coil spring (7) can be increased by tightening the cap (6) more against the bonnet (5). can do. Therefore, by adjusting the elastic force of the compression coil spring (7), the set value of the pressure of the fluid that opens the fluid inflow passage (2a) can be arbitrarily set.
- the support portion (12) of the valve seat (3) is formed in an L-shaped cross section including a bottom wall (12a) and a peripheral wall (12b).
- the O-ring (8) is closely fitted in the recess (2c) of the body (2) and is closely fitted on the outer periphery of the peripheral wall (12b) of the support portion (12) of the valve seat (3) It is received by the upper surface of the bottom wall (12a) of the support part (12) of the seat (3).
- the outer diameter of the bottom wall (12a) of the support portion (12) is slightly smaller than the outer diameter of the contact portion (11), and the outer peripheral surface of the bottom wall (12a) of the support portion (12) and the body ( A space (S) is formed between the peripheral surface of the recess (2c) in 2).
- the valve seat (3) is inserted into the recess (2c ) Is provided with a slight gap that can be detachably fitted.
- the O-ring (8) is sandwiched between the support portion (12) of the valve seat (3) and the lower end surface of the O-ring presser (9).
- the O-ring presser (9) presses the O-ring (8) downward while being received by the step surface (2d) provided in the recess (2c) of the body (2).
- the lower end of the large-diameter portion (13) of the valve body (4) has its lower end surface abutted against the upper end surface of the peripheral wall (12b) of the support portion (12) of the valve seat (3).
- the part is brought into contact with part of the O-ring (8). Thereby, the sealing performance of the opening of the fluid inflow passage (2a) is ensured.
- a groove (communication path) (22) is provided on the lower surface of the contact portion (11) of the valve seat (3), in FIG. 2, it passes through the groove (22) from the fluid inflow path (2a).
- a passage extending to the outer periphery of the contact portion (11) of the valve seat (3) is formed.
- the fitting between the valve seat (3) and the body (2) can be done as described above. (The outer surface of the abutment (11) of the valve seat (3) and the recess (2c) of the body (2) Therefore, the fluid in the fluid inflow passage (2a) passes through the outer periphery of the contact portion (11) of the valve seat (3) and passes through the outer periphery of the valve seat (3).
- the O-ring (8) receives the pressure (back pressure) of the fluid in the space (S) and is strongly pressed against the lower end of the large-diameter portion (13) of the valve body (4). More reliably, the fluid in the fluid inflow passage (2a) leaks from between the upper end surface of the support portion (12) of the valve seat (3) and the lower end surface of the large diameter portion (13) of the valve body (4). Is prevented.
- the number and shape of the grooves (22) are not limited to those illustrated.
- a similar groove (22) may be provided on the bottom surface of the recess (2c) of the body (2).
- the groove (22) communicates the space (S) formed in the outer periphery of the bottom wall (12a) of the support portion (12) of the valve seat (3) with the fluid inflow passage (2a). Therefore, instead of the groove (22), a through hole that penetrates the valve seat (3) in the radial direction may be provided as the communication path.
- the sealing performance of a relief valve that is often used in the field of controlling fluid can be improved, which can contribute to improving the performance of various fluid control devices.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
Description
(2) :ボディ
(2a):流体流入通路
(2b):流体流出通路
(2c):凹所
(3) :弁座
(4) :弁体
(7) :圧縮コイルばね(付勢部材)
(8) :Oリング
(9) :Oリング押さえ
(22):溝(連通路)
(S) :空間
Claims (2)
- 上向きに開口する凹所、前記凹所底面に開口する流体流入通路および前記凹所側面に開口する流体流出通路が設けられたボディと、前記流体流入通路の開口部に設けられた環状の弁座と、付勢部材で下方に付勢されて前記弁座の開口を閉鎖する弁体と、前記ボディの前記凹所に嵌め入れられて前記弁座と前記弁体との間をシールするOリングとを備えており、前記流体流入通路内の流体圧力が所定値以下の場合に、前記弁体が前記弁座に押圧されることで前記流体流入通路が閉鎖されており、前記流体圧力が所定値を超えた場合に、前記弁体が前記流体圧力によって上方に移動させられることで、前記流体流入通路が開放されているリリーフ弁であって、
前記弁座は、前記ボディの前記凹所に着脱可能に嵌め入れられており、前記ボディに、前記Oリングを前記弁座との間で挟持するOリング押さえが固定されており、前記弁体の下端部は、前記弁座の上端面および前記Oリングの一部に当接させられており、
前記ボディと前記弁座と前記Oリングとによって囲まれた空間と前記流体流入通路とを連通する連通路が設けられているリリーフ弁。 - 前記連通路は、前記弁座の底面に設けられた溝を含んでいる請求項1のリリーフ弁。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201780022036.1A CN109073104B (zh) | 2016-03-31 | 2017-03-31 | 溢流阀 |
KR1020187025569A KR102143168B1 (ko) | 2016-03-31 | 2017-03-31 | 릴리프 밸브 |
JP2018509656A JP6824534B2 (ja) | 2016-03-31 | 2017-03-31 | リリーフ弁 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016069987 | 2016-03-31 | ||
JP2016-069987 | 2016-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017171007A1 true WO2017171007A1 (ja) | 2017-10-05 |
Family
ID=59966033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/013605 WO2017171007A1 (ja) | 2016-03-31 | 2017-03-31 | リリーフ弁 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6824534B2 (ja) |
KR (1) | KR102143168B1 (ja) |
CN (1) | CN109073104B (ja) |
WO (1) | WO2017171007A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113566002A (zh) * | 2021-08-19 | 2021-10-29 | 沈阳飞机工业(集团)有限公司 | 机械式自力型断气活门装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4723707Y1 (ja) * | 1968-07-13 | 1972-07-28 | ||
JPS5956466U (ja) * | 1982-10-08 | 1984-04-13 | 東伸高圧技研株式会社 | 弁の開閉装置 |
JPH01193473A (ja) * | 1988-01-29 | 1989-08-03 | Toshiba Corp | リリーフバルブ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2724820B2 (ja) | 1986-12-18 | 1998-03-09 | 株式会社小松製作所 | 可変容量型油圧ポンプの制御装置 |
JPS63154874U (ja) * | 1987-03-31 | 1988-10-12 | ||
CN2263237Y (zh) * | 1996-07-22 | 1997-09-24 | 张建伍 | 顺向止流多功能接嘴龙头 |
JPH1144289A (ja) * | 1997-07-29 | 1999-02-16 | Honda Motor Co Ltd | 往復動型コンプレッサ |
CN2338550Y (zh) * | 1998-07-28 | 1999-09-15 | 四川东风嘉泰汽车有限公司 | 自卸车用二位二通限位溢流阀 |
CN102734543B (zh) * | 2012-06-23 | 2015-06-03 | 杭州神林电子有限公司 | 漏水防护阀门 |
CN204664492U (zh) * | 2015-04-15 | 2015-09-23 | 厦门建霖工业有限公司 | 水过滤器安全阀 |
-
2017
- 2017-03-31 CN CN201780022036.1A patent/CN109073104B/zh not_active Expired - Fee Related
- 2017-03-31 JP JP2018509656A patent/JP6824534B2/ja active Active
- 2017-03-31 KR KR1020187025569A patent/KR102143168B1/ko active IP Right Grant
- 2017-03-31 WO PCT/JP2017/013605 patent/WO2017171007A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4723707Y1 (ja) * | 1968-07-13 | 1972-07-28 | ||
JPS5956466U (ja) * | 1982-10-08 | 1984-04-13 | 東伸高圧技研株式会社 | 弁の開閉装置 |
JPH01193473A (ja) * | 1988-01-29 | 1989-08-03 | Toshiba Corp | リリーフバルブ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113566002A (zh) * | 2021-08-19 | 2021-10-29 | 沈阳飞机工业(集团)有限公司 | 机械式自力型断气活门装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2017171007A1 (ja) | 2019-02-28 |
CN109073104B (zh) | 2020-07-31 |
KR20180110045A (ko) | 2018-10-08 |
JP6824534B2 (ja) | 2021-02-03 |
CN109073104A (zh) | 2018-12-21 |
KR102143168B1 (ko) | 2020-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2057150A (en) | Two-stage pressure regulator | |
KR102370283B1 (ko) | 스로틀 밸브 | |
CN105546208B (zh) | 减压阀 | |
JP5040826B2 (ja) | 弁装置 | |
JP6349324B2 (ja) | 真空弁 | |
CN103670715B (zh) | 旁路阀、燃料供应系统和替换旁路阀中部件的方法 | |
JP2008309255A (ja) | 逃がし弁 | |
JP2020523523A (ja) | 残圧機能を有するコンパクトなガスボンベ弁 | |
US2556308A (en) | Faucet | |
US20170102091A1 (en) | Control member for a fluid control device | |
JP5984397B2 (ja) | リリーフ弁 | |
JP2005172026A (ja) | 流体制御器 | |
KR20160119244A (ko) | 다이어프램 밸브 및 그 조립 방법 | |
JP6824528B2 (ja) | 流体制御器 | |
JP5512159B2 (ja) | 圧力開放弁 | |
WO2017171007A1 (ja) | リリーフ弁 | |
JP6336814B2 (ja) | 減圧弁 | |
WO2019163879A1 (ja) | 減圧弁 | |
US2888946A (en) | Diaphragm relief valve | |
JP2015132305A (ja) | 減圧弁 | |
AU2013273691A1 (en) | Excess Pressure Safety Relief Valve | |
JP5911836B2 (ja) | 減圧弁 | |
US2689581A (en) | High-pressure safety relief valve | |
JP2020148251A (ja) | 逃し弁一体減圧弁及び給湯機 | |
JP2015060523A (ja) | ポペット形減圧弁 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 20187025569 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020187025569 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018509656 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17775538 Country of ref document: EP Kind code of ref document: A1 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17775538 Country of ref document: EP Kind code of ref document: A1 |