JPH0251774U - - Google Patents
Info
- Publication number
- JPH0251774U JPH0251774U JP13047888U JP13047888U JPH0251774U JP H0251774 U JPH0251774 U JP H0251774U JP 13047888 U JP13047888 U JP 13047888U JP 13047888 U JP13047888 U JP 13047888U JP H0251774 U JPH0251774 U JP H0251774U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve stem
- bodies
- types
- stem
- 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.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
Landscapes
- Details Of Valves (AREA)
- Check Valves (AREA)
Description
第１図ないし第３図は本考案の一実施例を示す
バタフライ逆止弁であつて、第１図は平面図、第
１ａ図は第１図Ａ部の拡大図、第２図は第１図の
―線断面図、第３図は第１図、第２図の―
線断面図、第３ａ図は第３図Ｂ部の拡大図、第
４図ないし第６図は従来例を示し、第４図は平面
図、第５図は第４図の―線断面図、第６図は
第４図、第５図の―線断面図である。
１，１ａ，１ｂ……弁体、４……本体、５……
弁座部、８……ストツプピン、２１……弁軸、２
１ａ……延長部、２１ｃ，２１ｄ……係止用穴、
２２……係合部、３１，３２……コイルスプリン
グ、３１ａ，３２ａ……先端部、３１ｂ，３２ｂ
……後端部。
1 to 3 show a butterfly check valve according to an embodiment of the present invention, in which FIG. 1 is a plan view, FIG. 1a is an enlarged view of section A in FIG. 1, and FIG. Figure 3 is a cross-sectional view of Figure 1 and Figure 2.
3a is an enlarged view of part B in FIG. 3, FIGS. 4 to 6 show conventional examples, FIG. 4 is a plan view, and FIG. 5 is a sectional view taken along the line -- in FIG. FIG. 6 is a sectional view taken along the line -- in FIGS. 4 and 5. FIG. 1, 1a, 1b... Valve body, 4... Main body, 5...
Valve seat portion, 8... Stop pin, 21... Valve stem, 2
1a...extension part, 21c, 21d...locking hole,
22...Engagement part, 31, 32...Coil spring, 31a, 32a...Tip part, 31b, 32b
...Rear end.
Claims (1)
動する２枚の弁体によつて構成し、コイルスプリ
ングの反力によつてこれら２枚の弁体によつて弁
座部を閉じるようにしたウオータハンマ防止機能
を有するバタフライ逆止弁において、弁軸の端部
を延長し、該延長部に弁軸を外部から回転できる
係合部を設け、弁軸の中央部に、巻き方向を異に
した２種類のコイルスプリングの各先端部をそれ
ぞれ係止する係止部を設け、該係止部に係止され
た上記２種類のコイルスプリングの各後端部を、
両弁体の背面にそれぞれ閉鎖方向に押圧するよう
に当接させたことを特徴とするウオータハンマ防
止機能を有するバタフライ逆止弁。 The valve body is composed of two valve bodies that each swing around the valve shaft as a fulcrum, and the valve seat is closed by these two valve bodies by the reaction force of a coil spring. In a butterfly check valve that has a water hammer prevention function, the end of the valve stem is extended, an engaging part that allows the valve stem to be rotated from the outside is provided in the extension, and the valve stem is wound in different directions in the center of the valve stem. A locking portion is provided for locking each tip of the two types of coil springs, and each rear end of the two types of coil springs is locked to the locking portion.
1. A butterfly check valve having a water hammer prevention function, characterized in that the back surfaces of both valve bodies are brought into contact so as to be pressed in the closing direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13047888U JPH0251774U (en) | 1988-10-06 | 1988-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13047888U JPH0251774U (en) | 1988-10-06 | 1988-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0251774U true JPH0251774U (en) | 1990-04-12 |
Family
ID=31385683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13047888U Pending JPH0251774U (en) | 1988-10-06 | 1988-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0251774U (en) |
-
1988
- 1988-10-06 JP JP13047888U patent/JPH0251774U/ja active Pending