JPS6322389Y2 - - Google Patents
Info
- Publication number
- JPS6322389Y2 JPS6322389Y2 JP1983085693U JP8569383U JPS6322389Y2 JP S6322389 Y2 JPS6322389 Y2 JP S6322389Y2 JP 1983085693 U JP1983085693 U JP 1983085693U JP 8569383 U JP8569383 U JP 8569383U JP S6322389 Y2 JPS6322389 Y2 JP S6322389Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve seat
- recess
- valve body
- outer periphery
- 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
Links
- 244000145845 chattering Species 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Check Valves (AREA)
- Details Of Valves (AREA)
Description
【考案の詳細な説明】
本考案は低差圧リフト逆止弁のチヤタリング防
止装置に関するものである。[Detailed Description of the Invention] The present invention relates to a chattering prevention device for a low differential pressure lift check valve.
従来、低差圧低流量で使用するリフト逆止弁に
於ては流体の持つ出量の不足より弁体のホツピン
グ現象の繰り返しにより騒音を発生し、配管騒音
源の一つとなつている。特に夜間や静粛な場所で
は騒音公害の起因となつている。 Conventionally, in lift check valves used at low differential pressures and low flow rates, noise is generated due to repeated hopping of the valve body due to insufficient fluid output, which is one of the sources of piping noise. It is a cause of noise pollution, especially at night and in quiet places.
本考案はこれに鑑みて流体の出量不足によつて
も弁のチヤタリングを防止し、且騒音発生を未然
に防止せんとしてなしたもので、低差圧リフト逆
止弁の弁筐本体内に弁座を一体に設け、弁座は弁
体を嵌入するくぼみを有する短管状とし、内底面
には弁体に当接する弁座面を形成し、くぼみの上
部は上方向に拡開したテーパ面とし、かつくぼみ
下端は弁座面外周にクツシヨン室を形成すると共
に、弁座内孔と弁体外周面との間を狭小な隙間と
したことを特徴とする。 In view of this, the present invention was developed to prevent the valve from chattering even when there is insufficient fluid output, and also to prevent the generation of noise. A valve seat is integrally provided, and the valve seat is shaped like a short tube with a recess into which the valve element is inserted.The inner bottom surface has a valve seat surface that comes into contact with the valve element, and the upper part of the recess is a tapered surface that expands upward. The lower end of the recess forms a cushion chamber on the outer periphery of the valve seat surface, and a narrow gap is formed between the inner hole of the valve seat and the outer periphery of the valve body.
以下本考案を図面に基づいて説明する。 The present invention will be explained below based on the drawings.
図に於て１はリフト逆止弁の弁筐本体、２はこ
の弁筐本体１に装着する弁蓋、３はこの弁筐本体
内の流路に形成される弁座、４はこの弁座と対向
し、且上下動するように弁蓋２にて支持された弁
体である。 In the figure, 1 is the valve housing body of the lift check valve, 2 is the valve lid attached to this valve housing body 1, 3 is the valve seat formed in the flow path within this valve housing body, and 4 is this valve seat. This is a valve body supported by the valve cover 2 so as to face the valve body and move up and down.
上記弁座３は短管状で弁筐本体内に固定される
と共に上部に弁体を嵌合するくぼみ３ａを形成
し、このくぼみ３ａの内底面に弁座面３ｂを設け
る。そしてこのくぼみ３ａの内径は弁体外径より
若干大とし、くぼみ内周面と弁体外周面間に隙間
ｅを有し、弁体の上下動が円滑に行えるようにな
すと共にこのくぼみ３ａ内で、しかも弁座面３ｂ
の外周部にはリング状の空室を形成してクツシヨ
ン室３ｃとする。またこのくぼみ３ａの内周面は
その中間位置より上方を上方拡開状に即ち角度θ
のラツパ状に開かせて、これにより流量に応じて
弁体の開度を調整するようになす。 The valve seat 3 has a short tubular shape and is fixed within the valve housing body, and has a recess 3a in its upper portion into which a valve body is fitted, and a valve seat surface 3b is provided on the inner bottom surface of the recess 3a. The inner diameter of this recess 3a is made slightly larger than the outer diameter of the valve body, and there is a gap e between the inner circumferential surface of the recess and the outer circumferential surface of the valve body, so that the valve body can move up and down smoothly and within this recess 3a. , and valve seat surface 3b
A ring-shaped empty chamber is formed on the outer periphery of the cushion chamber 3c. Moreover, the inner circumferential surface of this recess 3a is expanded upwardly from the intermediate position, that is, at an angle θ
The opening of the valve body is adjusted according to the flow rate.
尚弁体４はその軽量化を図るようロツド部をパ
イプ状とする。 The rod portion of the valve body 4 is formed into a pipe shape in order to reduce its weight.
而して上述の如く形成したるリフト逆止弁に於
て低差圧、低流量下で使用される場合、流体の出
量により弁体にポツピング現象が生じる。通常弁
体はくぼみ上部のテーパ面部３ｄにより流量に応
じて弁体の開度が自動的に調整されているが、ポ
ツピング現象にて弁体が下降するようになつた
時、弁体がこのテーパ面部３ｄより垂直面部３ｅ
に達すると弁体外周とくぼみ内周面の垂直面部と
の隙間が狭小となり、この狭小隙間とクツシヨン
室との作用にて弁体の押下力に制止力が作用し、
弁体が弁座面に強く当接される力を抑制し、これ
により弁座面への叩きつけられる騒音を未然に防
止するようになすものである。 When the lift check valve formed as described above is used under low differential pressure and low flow rate, a popping phenomenon occurs on the valve body due to the amount of fluid flowing out. Normally, the opening degree of the valve body is automatically adjusted according to the flow rate by the tapered surface portion 3d at the top of the recess, but when the valve body begins to descend due to the popping phenomenon, the valve body is Vertical surface portion 3e from surface portion 3d
When it reaches , the gap between the outer circumference of the valve body and the vertical surface of the inner circumference of the recess becomes narrow, and the action of this narrow gap and the cushion chamber causes a restraining force to act on the pressing force of the valve body.
This suppresses the force with which the valve body is strongly brought into contact with the valve seat surface, thereby preventing the noise caused by slamming against the valve seat surface.
このくぼみ内周面のテーパ面部の長さl2と垂直
面部の長さl1は適当に定められるものである。 The length l 2 of the tapered surface portion and the length l 1 of the vertical surface portion of the inner circumferential surface of the recess are determined appropriately.
本考案による時は弁座に弁体の一部を嵌合する
くぼみを形成し、且このくぼみの上半をテーパ面
とし、下端には弁座面外周にクツシヨン室を形成
すると共に弁体外周との間の間隙を狭小な隙間と
したから、これにより流量に応じて弁体の開度が
自動的に調整されると共に弁体がさらに降下する
力を受けた場合このクツシヨン室にてクツシヨン
作用が働き弁体を弁座面へ強く叩きつけられるの
が防止でき、騒音を低減できる利点があり、しか
も低差圧、低流量でも円滑な作用を行える等の利
点を有する。 According to the present invention, a recess into which a part of the valve body fits is formed in the valve seat, and the upper half of this recess is a tapered surface, and a cushion chamber is formed around the outer periphery of the valve seat surface at the lower end, and the outer periphery of the valve body is formed at the lower end. Since the gap between the valve body and the valve body is made narrow, the opening degree of the valve body is automatically adjusted according to the flow rate, and when the valve body is subjected to further downward force, the cushion acts in this cushion chamber. This has the advantage of preventing the valve body from being slammed against the valve seat surface, reducing noise, and allowing smooth operation even at low differential pressures and low flow rates.
第１図は断面図、第２図は要部の説明図、第３
図は公知の断面図である。
１……弁筐本体、２……弁蓋、３……弁座、３
ａ……くぼみ、３ｂ……弁座面、３ｃ……クツシ
ヨン室、３ｄ……テーパ面部、３ｅ……垂直面
部、４……弁体、ｌ……弁体とくぼみとの隙間、
l1……垂直面部の長さ、l2……テーパ面部の長さ。
Figure 1 is a sectional view, Figure 2 is an explanatory diagram of the main parts, and Figure 3 is a cross-sectional view.
The figure is a known cross-sectional view. 1... Valve housing body, 2... Valve lid, 3... Valve seat, 3
a... recess, 3b... valve seat surface, 3c... cushion chamber, 3d... tapered surface section, 3e... vertical surface section, 4... valve element, l... gap between the valve element and the recess,
l 1 ... Length of vertical surface section, l 2 ... Length of tapered surface section.
Claims (1)
に設け、弁座は弁体を嵌入するくぼみを有する短
管状とし、内底面には弁体に当接する弁座面を形
成し、くぼみの上部は上方向に拡開したテーパ面
とし、かつくぼみ下端は弁座面外周にクツシヨン
室を形成すると共に、弁座内孔と弁体外周面との
間を狭小な隙間としたことを特徴とする低差圧リ
フト逆止弁のチヤタリング防止装置。 A valve seat is integrally provided within the valve housing body of the low differential pressure lift check valve, and the valve seat is shaped like a short tube with a recess into which the valve element is inserted, and the inner bottom surface is formed with a valve seat surface that comes into contact with the valve element. The upper part of the recess is a tapered surface that expands upward, and the lower end of the recess forms a cushion chamber around the outer periphery of the valve seat surface, with a narrow gap between the inner hole of the valve seat and the outer periphery of the valve body. A chattering prevention device for low differential pressure lift check valves featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8569383U JPS59189965U (en) | 1983-06-03 | 1983-06-03 | Chattering prevention device for low differential pressure lift check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8569383U JPS59189965U (en) | 1983-06-03 | 1983-06-03 | Chattering prevention device for low differential pressure lift check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59189965U JPS59189965U (en) | 1984-12-17 |
| JPS6322389Y2 true JPS6322389Y2 (en) | 1988-06-20 |
Family
ID=30215656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8569383U Granted JPS59189965U (en) | 1983-06-03 | 1983-06-03 | Chattering prevention device for low differential pressure lift check valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59189965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016171147A1 (en) * | 2015-04-20 | 2016-10-27 | ナブテスコオートモーティブ 株式会社 | Compressed air drying system and check valve used in compressed air drying system |
| JP2017137848A (en) * | 2016-02-05 | 2017-08-10 | ナブテスコオートモーティブ株式会社 | Compressed air drying system and check valve for the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5552341B2 (en) * | 2010-03-15 | 2014-07-16 | 株式会社テイエルブイ | Relief valve |
| JP5552342B2 (en) * | 2010-03-15 | 2014-07-16 | 株式会社テイエルブイ | Relief valve |
| JP6657348B2 (en) * | 2018-09-25 | 2020-03-04 | 株式会社不二工機 | Electric drive valve |
| JP7395538B2 (en) * | 2021-04-08 | 2023-12-11 | 株式会社鷺宮製作所 | Check valve and refrigeration cycle system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539033B2 (en) * | 1972-11-15 | 1978-04-03 | ||
| JPS5638828A (en) * | 1979-09-07 | 1981-04-14 | Sony Corp | Manufacture of semiconductor device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539033U (en) * | 1977-07-29 | 1978-01-25 |
-
1983
- 1983-06-03 JP JP8569383U patent/JPS59189965U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539033B2 (en) * | 1972-11-15 | 1978-04-03 | ||
| JPS5638828A (en) * | 1979-09-07 | 1981-04-14 | Sony Corp | Manufacture of semiconductor device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016171147A1 (en) * | 2015-04-20 | 2016-10-27 | ナブテスコオートモーティブ 株式会社 | Compressed air drying system and check valve used in compressed air drying system |
| US10561979B2 (en) | 2015-04-20 | 2020-02-18 | Nabtesco Automotive Corporation | Compressed air drying system and check valve used in compressed air drying system |
| JP2017137848A (en) * | 2016-02-05 | 2017-08-10 | ナブテスコオートモーティブ株式会社 | Compressed air drying system and check valve for the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59189965U (en) | 1984-12-17 |
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