JPH0253661B2 - - Google Patents
Info
- Publication number
- JPH0253661B2 JPH0253661B2 JP60048545A JP4854585A JPH0253661B2 JP H0253661 B2 JPH0253661 B2 JP H0253661B2 JP 60048545 A JP60048545 A JP 60048545A JP 4854585 A JP4854585 A JP 4854585A JP H0253661 B2 JPH0253661 B2 JP H0253661B2
- Authority
- JP
- Japan
- Prior art keywords
- cage
- valve body
- valve
- small holes
- end surface
- 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
Links
Landscapes
- Sliding Valves (AREA)
- Details Of Valves (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、多孔ケージ調節弁の弁体構造に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a valve body structure of a multi-hole cage control valve.
従来この種の先行技術として特開昭59−175687
号公報が挙げられる。
Previously, this type of prior art was published in Japanese Patent Application Laid-Open No. 59-175687.
Publication No.
この構造を説明すると、ケーシングの弁室内に
外周面に多数個の小孔を備えた円筒状のケージを
配置し、ケージ内に弁体を移動自在に設け、弁体
の移動によつて小孔の開口量を調整し、流体を該
ケージの外方から小孔を通過させてケージの内方
へと調整流出させるように構成したものである。 To explain this structure, a cylindrical cage with a large number of small holes on the outer circumferential surface is placed inside the valve chamber of the casing, a valve body is movably provided inside the cage, and the small holes are formed by moving the valve body. The opening amount of the cage is adjusted to allow fluid to flow from the outside of the cage through the small holes and into the cage.
〔発明が解決しようとする課題〕
しかしながら上記従来構造の場合、高圧流体、
例えば高圧水を用いると前記ケージ内周面に顕著
内周面キヤビテーシヨン、エロージヨンが生じ
る。[Problem to be solved by the invention] However, in the case of the above conventional structure, high pressure fluid,
For example, when high-pressure water is used, significant inner circumferential cavitation and erosion occur on the inner circumferential surface of the cage.
このことはモデル試験の結果、第５図のフロー
パターン図の如く弁体５１の外周面底角部が先細
りのテーパー面５２に形成されているため、ケー
ジ５３の小孔５４で生じた気泡を含む噴流がテー
パー面５２とケージ５３内壁面に沿つて流れる気
泡が崩壊し、この衝撃圧によりキヤビテーシヨン
損傷が生じたものと推測できた。 As a result of a model test, it was found that the bottom corner of the outer peripheral surface of the valve body 51 is formed into a tapered surface 52 as shown in the flow pattern diagram in FIG. It was inferred that the air bubbles in which the jet flow contained collapsed along the tapered surface 52 and the inner wall surface of the cage 53, and cavitation damage was caused by this impact pressure.
この為、第６図の如く前記テーパー面５２を無
くし、弁体５１の下端面を水平面５５として試験
したが、この場合、弁体５１の底面がケージ５３
の小孔５４で生ずる気泡を含む噴出にさらされる
状態となり、弁体５１底面でのエロージヨンが生
じるという結果になつた。 For this reason, as shown in FIG. 6, the tapered surface 52 was eliminated and the lower end surface of the valve body 51 was used as a horizontal surface 55 for testing, but in this case, the bottom surface of the valve body 51 was
As a result, the valve body 51 was exposed to the air bubbles generated in the small hole 54, resulting in erosion at the bottom surface of the valve body 51.
これらの現象は弁体５１と弁座５６との接触部
分においても生じる。 These phenomena also occur at the contact portion between the valve body 51 and the valve seat 56.
添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be explained with reference to the accompanying drawings.
ケーシング１の弁室６内に外周面に多数の小孔
１２を備えた円筒状のケージ８を配置し、ケージ
８内に弁体９を移動自在に設け、流体を該ケージ
８の外方から該多数の小孔１２を経て該ケージ８
の内方へと流出させるようにした多孔ケージ調節
弁において、上記弁体９の筒状端面を筒芯に向か
つて内側程凹むテーパー面１４に形成したことを
特徴とする多孔ケージ調節弁の弁体構造に係るも
のである。 A cylindrical cage 8 having a large number of small holes 12 on the outer circumferential surface is disposed within the valve chamber 6 of the casing 1, a valve body 9 is movably provided within the cage 8, and fluid is supplied from the outside of the cage 8. The cage 8 passes through the large number of small holes 12.
The porous cage regulating valve is characterized in that the cylindrical end surface of the valve body 9 is formed into a tapered surface 14 that is concave toward the inner side toward the cylinder core. It is related to body structure.
流体はケージ８の小孔１２を通つてケージ８外
方から内方へと噴出し、このとき弁体９の筒状端
面を筒芯に向かつて内側程凹むテーパー面１４に
形成している為、弁体９の筒状端面は噴流の広が
りから逃げ得る。
The fluid ejects from the outside to the inside of the cage 8 through the small hole 12 of the cage 8, and at this time, the cylindrical end surface of the valve body 9 is formed into a tapered surface 14 that is concave toward the inside toward the cylinder core. , the cylindrical end face of the valve body 9 can escape from the spread of the jet flow.
第１図乃至第４図は本発明を適用した調節弁の
実施例を示し、１はケーシングであつて、それに
は入口流路２と出口流路３が形成されるととも
に、上部に蓋体４をボルト５で固定し、入口流路
２と出口流路３との相互の交差部には弁室６が形
成されている。
1 to 4 show an embodiment of a control valve to which the present invention is applied, in which 1 is a casing, in which an inlet flow path 2 and an outlet flow path 3 are formed, and a lid body 4 is formed in the upper part. are fixed with bolts 5, and a valve chamber 6 is formed at the mutual intersection of the inlet flow path 2 and the outlet flow path 3.
弁室６の下部には弁座７が固定され、弁室６内
には円筒状のケージ８が固定され、ケージ８内に
内には弁体９が上下摺動可能に設けられ、ケージ
８内周面と弁体９外周面とは摺接状態にあり、弁
体９上部には弁棒１０が連結され、弁体９下端面
と弁座７との間に絞り部１１が形成されている。 A valve seat 7 is fixed to the lower part of the valve chamber 6, a cylindrical cage 8 is fixed inside the valve chamber 6, a valve body 9 is provided inside the cage 8 so as to be vertically slidable, and the cage 8 The inner peripheral surface and the outer peripheral surface of the valve body 9 are in sliding contact, a valve stem 10 is connected to the upper part of the valve body 9, and a throttle part 11 is formed between the lower end surface of the valve body 9 and the valve seat 7. There is.
ケージ８の下部には多数の小孔１２が形成され
ている。 A large number of small holes 12 are formed in the lower part of the cage 8.
この弁体９の底部中央には凹部１３が形成さ
れ、且つ底端面は角度θが７度30分の凹状のテー
パー面１４が形成されている。 A concave portion 13 is formed in the center of the bottom of the valve body 9, and a concave tapered surface 14 with an angle θ of 7 degrees and 30 minutes is formed on the bottom end surface.
また弁座７の角度θ0は45度に形成されている。 Further, the angle θ 0 of the valve seat 7 is set to 45 degrees.
本第一実施例は上記構成であるから、弁棒１０
により弁体９を上昇させると絞り部１１が開口
し、流体は入口流路２からケージ８外方に達し、
ケージ８の外方から多数の小孔１２を通つて内方
へと流出し、弁体９の移動量によつて変化する小
孔１２の開口面積に応じた流量、圧力で調整され
て出口流路３より流出される。 Since this first embodiment has the above configuration, the valve stem 10
When the valve body 9 is raised, the throttle part 11 opens, and the fluid reaches the outside of the cage 8 from the inlet channel 2.
The outlet flow flows from the outside of the cage 8 inward through a large number of small holes 12, and is adjusted with a flow rate and pressure according to the opening area of the small holes 12, which changes depending on the amount of movement of the valve body 9. It flows out from route 3.
この場合、第４図野如く弁体９の筒状底端面は
筒芯に向かつて内側程凹むテーパー面１４に形成
されているので弁体９の底端面は小孔１２からの
噴流の広がりから逃げることができ、この結果、
ケージ８内周面、弁体９底端面のキヤビテーシヨ
ン、エロージヨンが抑制でき、且つ騒音の低減も
図ることができる。 In this case, as shown in FIG. 4, the cylindrical bottom end surface of the valve body 9 is formed into a tapered surface 14 that is concave toward the inside toward the cylinder core, so that the bottom end surface of the valve body 9 is protected from the spread of the jet from the small hole 12. This results in being able to escape,
Cavitation and erosion of the inner peripheral surface of the cage 8 and the bottom end surface of the valve body 9 can be suppressed, and noise can also be reduced.
尚、弁体９が上昇した場合における弁室６内周
壁部においても同様な作用効果を得る。 Note that similar effects can be obtained on the inner circumferential wall of the valve chamber 6 when the valve body 9 is raised.
本発明は上述の如く、弁体の筒状端面は筒芯に
向かつて内側程凹むテーパー面に形成されている
ので弁体の筒状端面は小孔からの噴流の広がりか
ら逃げることができ、この結果、ケージ内周面、
弁体の筒状端面のキヤビテーシヨン、エロージヨ
ンが抑制でき、且つ騒音の低減も図ることができ
る。
As described above, in the present invention, the cylindrical end surface of the valve body is formed into a tapered surface that is concave toward the inner side toward the cylinder core, so that the cylindrical end surface of the valve body can escape from the spread of the jet flow from the small hole. As a result, the inner peripheral surface of the cage,
Cavitation and erosion of the cylindrical end surface of the valve body can be suppressed, and noise can also be reduced.
以上、所期の目的を充分達成することができ
る。 As described above, the intended purpose can be fully achieved.
図面は本発明の一実施例を示すもので、第１図
は縦断面図、第２図はその平断面図、第３，４図
はその部分断面図、第５，６図は従来例の部分断
面図である。
１……ケーシング、６……弁室、８……ケー
ジ、９……弁体、１２……小孔、１４……テーパ
ー面。
The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a plan sectional view, FIGS. 3 and 4 are partial sectional views, and FIGS. 5 and 6 are views of a conventional example. FIG. 1...Casing, 6...Valve chamber, 8...Cage, 9...Valve body, 12...Small hole, 14...Tapered surface.
Claims (1)
備えた円筒状のケージを配置し、ケージ内に弁体
を移動自在に設け、流体を該ケージの外方から該
多数の小孔を経て該ケージの内方へと流出させる
ようにした多孔ケージ調節弁において、上記弁体
の筒状端面を筒芯に向かつて内側程凹むテーパー
面に形成したことを特徴とする多孔ケージ調節弁
の弁体構造。1 A cylindrical cage with a large number of small holes on the outer circumferential surface is arranged in the valve chamber of the casing, a valve body is provided in the cage so as to be movable, and fluid is introduced from outside of the cage through the large number of small holes. A multi-hole cage control valve that allows flow to flow inward of the cage, wherein the cylindrical end surface of the valve body is formed into a tapered surface that is concave toward the inner side toward the cylinder core. Body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4854585A JPS61206873A (en) | 1985-03-12 | 1985-03-12 | Valve piece structure of multihole cage adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4854585A JPS61206873A (en) | 1985-03-12 | 1985-03-12 | Valve piece structure of multihole cage adjusting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61206873A JPS61206873A (en) | 1986-09-13 |
| JPH0253661B2 true JPH0253661B2 (en) | 1990-11-19 |
Family
ID=12806338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4854585A Granted JPS61206873A (en) | 1985-03-12 | 1985-03-12 | Valve piece structure of multihole cage adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61206873A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63318396A (en) * | 1987-06-23 | 1988-12-27 | 三井化学株式会社 | Condensate discharger |
| JP2547210B2 (en) * | 1987-04-10 | 1996-10-23 | 英俊 大内 | Plate valve |
| KR100474659B1 (en) * | 2002-01-25 | 2005-03-08 | 주식회사 동강금속 | Valve seat corrosion interruption structure of valve |
| JP2008164636A (en) * | 2008-03-17 | 2008-07-17 | Hioki Ee Corp | Contact probe fixture |
| JP4717144B2 (en) * | 2010-01-08 | 2011-07-06 | 日置電機株式会社 | Contact probe fixture |
| JP6124820B2 (en) * | 2014-03-10 | 2017-05-10 | アズビル金門株式会社 | Cage type decompressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149563A (en) * | 1977-02-16 | 1979-04-17 | Copes-Vulcan, Inc. | Anti-cavitation valve |
-
1985
- 1985-03-12 JP JP4854585A patent/JPS61206873A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61206873A (en) | 1986-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |