JPH0434600U - - Google Patents
Info
- Publication number
- JPH0434600U JPH0434600U JP7647290U JP7647290U JPH0434600U JP H0434600 U JPH0434600 U JP H0434600U JP 7647290 U JP7647290 U JP 7647290U JP 7647290 U JP7647290 U JP 7647290U JP H0434600 U JPH0434600 U JP H0434600U
- Authority
- JP
- Japan
- Prior art keywords
- check valve
- case body
- gas outlet
- end wall
- chamber
- 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.)
- Granted
Links
- 230000002265 prevention Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Gas Burners (AREA)
Description
第１図から第３図は本考案の実施例を示し、第
１図は順流時での縦断側面図、第２図は逆流時で
の縦断側面図、第３図は静止時の縦断側面図であ
り、第４図は従来技術を示す第１図相当図である
。
１……逆火防止室、２……消炎筒、３……逆止
弁体、４……遮断弁体、５……ケース本体、６…
…５の一端壁、７……５の周側壁、８……ガス導
入口、９……ガス導出口、１０……ガス導出ノズ
ル、１１……遮断弁ホルダー、１２……遮断弁室
、１３……逆止弁室、１４……５の奥端壁、１５
……ガス連通路、１６……逆止弁座、１７……逆
止弁バネ、１８……リセツト杆、１９……リセツ
トバネ。
Figures 1 to 3 show an embodiment of the present invention, with Figure 1 being a longitudinal side view when flowing in a forward direction, Figure 2 being a longitudinal side view when flowing backward, and Figure 3 being a longitudinal side view when at rest. FIG. 4 is a diagram corresponding to FIG. 1 showing the prior art. DESCRIPTION OF SYMBOLS 1... Flashback prevention chamber, 2... Flame extinguishing tube, 3... Check valve body, 4... Shutoff valve body, 5... Case body, 6...
... One end wall of 5, 7... Circumferential side wall of 5, 8... Gas inlet, 9... Gas outlet, 10... Gas outlet nozzle, 11... Shutoff valve holder, 12... Shutoff valve chamber, 13 ...Check valve chamber, 14...Back end wall of 5, 15
... Gas communication passage, 16 ... Check valve seat, 17 ... Check valve spring, 18 ... Reset rod, 19 ... Reset spring.
Claims (1)
、逆止弁体３及び遮断弁体４を組み込み、ケース
本体５の一端壁６と周側壁７のいずれか一方にガ
ス導入口８を形成するとともに、他方にガス導出
口９を形成した乾式逆火防止器において、 一端壁６を開放状に形成したケース本体５の開
口部にガス導出ノズル１０を内嵌固定してケース
本体５内に逆火防止室１を形成し、 逆火防止室１内に遮断弁ホルダー１１を内嵌固
定し、この遮断弁ホルダー１１とケース本体５の
奥端壁１４内面との間に消炎筒２を配置し、 ガス導出ノズル１０にガス導出口９を形成する
とともに、消炎筒２配設位置に対応するケース本
体５の周側壁７にガス導入口８を形成し、 消炎筒２の内側に遮断弁室１２を形成し、遮断
弁ホルダー１１の内部のガス導出ノズル１０側に
逆止弁室１３を形成し、 遮断弁ホルダー１１にスプール弁で構成した遮
断弁体４を進退移動可能に内嵌するとともに、遮
断弁室１２内の遮断弁ホルダー１１とケース本体
５奥端壁１４との間に形成したガス連通路１５を
遮断弁体４で閉塞可能に構成し、 遮断弁体４の逆止弁室１３側での端部に逆止弁
座１６を形成して逆止弁室１３に装着した逆止弁
体３をガス導出ノズル１０との間に架設した逆止
弁バネ１７で逆止弁座１６に向けて弾圧付勢し、 ケース本体５の奥端壁１４にリセツト杆１８を
遮断弁体４に対向する状態で摺動可能に装着し、
このリセツト杆１８をケース本体５の奥端壁１４
との間に架設したリセツトバネ１９で遮断弁体４
から離隔する方向に弾圧付勢したことを特徴とす
る乾式逆火防止器。[Scope of claim for utility model registration] A flame-extinguishing tube 2 is installed in a flashback prevention chamber 1 formed in an airtight structure.
, a dry reverse valve incorporating a check valve body 3 and a cutoff valve body 4, forming a gas inlet 8 on one of the end wall 6 and the circumferential wall 7 of the case body 5, and forming a gas outlet 9 on the other side. In the fire arrester, a backfire prevention chamber 1 is formed in the case body 5 by fitting and fixing a gas outlet nozzle 10 into the opening of a case body 5 in which one end wall 6 is formed in an open shape. A cutoff valve holder 11 is fitted and fixed therein, and a flame extinguishing tube 2 is arranged between the cutoff valve holder 11 and the inner surface of the rear end wall 14 of the case body 5, and a gas outlet 9 is formed in the gas outlet nozzle 10. At the same time, a gas inlet 8 is formed in the circumferential side wall 7 of the case body 5 corresponding to the position where the flame extinguishing tube 2 is installed, a cutoff valve chamber 12 is formed inside the flame extinguishing tube 2, and a gas outlet inside the cutoff valve holder 11 is formed. A check valve chamber 13 is formed on the side of the nozzle 10, and a shutoff valve body 4 constituted by a spool valve is fitted into the shutoff valve holder 11 so as to be movable forward and backward, and the shutoff valve holder 11 in the shutoff valve chamber 12 and the case body are fitted. 5 A gas communication passage 15 formed between the back end wall 14 is configured to be closable by the cutoff valve body 4, and a check valve seat 16 is formed at the end of the cutoff valve body 4 on the check valve chamber 13 side. Then, the check valve body 3 installed in the check valve chamber 13 is elastically biased toward the check valve seat 16 by the check valve spring 17 installed between it and the gas outlet nozzle 10, and A reset rod 18 is slidably mounted on the end wall 14 in a state facing the shutoff valve body 4,
Connect this reset rod 18 to the back end wall 14 of the case body 5.
A reset spring 19 installed between the shutoff valve body 4
A dry flashback preventer characterized by being biased in a direction away from the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7647290U JPH0539280Y2 (en) | 1990-07-17 | 1990-07-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7647290U JPH0539280Y2 (en) | 1990-07-17 | 1990-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0434600U true JPH0434600U (en) | 1992-03-23 |
| JPH0539280Y2 JPH0539280Y2 (en) | 1993-10-05 |
Family
ID=31617975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7647290U Expired - Lifetime JPH0539280Y2 (en) | 1990-07-17 | 1990-07-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0539280Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240840A (en) * | 2004-02-24 | 2005-09-08 | Iwatani Industrial Gases Corp | Dry type back fire preventing apparatus |
-
1990
- 1990-07-17 JP JP7647290U patent/JPH0539280Y2/ja not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005240840A (en) * | 2004-02-24 | 2005-09-08 | Iwatani Industrial Gases Corp | Dry type back fire preventing apparatus |
| JP4512384B2 (en) * | 2004-02-24 | 2010-07-28 | 岩谷瓦斯株式会社 | Dry backfire preventer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0539280Y2 (en) | 1993-10-05 |
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