JPH01118263U - - Google Patents
Info
- Publication number
- JPH01118263U JPH01118263U JP1439188U JP1439188U JPH01118263U JP H01118263 U JPH01118263 U JP H01118263U JP 1439188 U JP1439188 U JP 1439188U JP 1439188 U JP1439188 U JP 1439188U JP H01118263 U JPH01118263 U JP H01118263U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- chamber
- valve chamber
- valve seat
- port
- 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
- 238000007789 sealing Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012856 packing Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Description
第１図は本考案の一実施例を示す通水状態にお
ける縦断面図であり、第２図は同水抜時あるいは
負圧発生時における縦断面図であり、第３図は同
水抜終了後における縦断面図である。
１は弁箱、２は流入口、３は流出口、４は弁室
、５は弁座、６はガイド壁、７は排水プラグ、８
は排水口、９は密封面、１０，１１はリング状パ
ツキン、１２は弁体、１３はばね、１４は排水路
、１５は吸気弁、１６は吸気弁体である。
Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention in a state where water is flowing, Fig. 2 is a longitudinal cross-sectional view when the same water is being drained or negative pressure is generated, and Fig. 3 is a longitudinal cross-sectional view after the water has been drained. FIG. 1 is a valve box, 2 is an inlet, 3 is an outlet, 4 is a valve chamber, 5 is a valve seat, 6 is a guide wall, 7 is a drain plug, 8
1 is a drain port, 9 is a sealing surface, 10 and 11 are ring-shaped packings, 12 is a valve body, 13 is a spring, 14 is a drain channel, 15 is an intake valve, and 16 is an intake valve body.
Claims (1)
心に対して下方から流出口側に向かつてほぼ４５
°の角度で斜交する弁室を形成し、上記弁室の上
端には下向きに弁座をもうけ、下端には、先端に
排水口を、その上方にシリンダ状の密封面を有す
る排水プラグを接続し、上記弁座および密封面を
閉塞する２個のリング状パツキンを装着し、上記
排水プラグに係止されたばねにより上向きに押圧
される、比重が１より小さい材質からなる弁体を
上記弁室に収容し、弁室の側方には流出口と排水
口とを導通する排水路を形成し、さらに上記弁座
の上流側に吸気弁を設けたことを特徴とする寒冷
地用逆流防止弁。 The inlet and outlet are provided on the same axis, and the direction from below to the outlet side with respect to the axis is approximately 45 mm.
A valve chamber is formed that intersects obliquely at an angle of 100 degrees, and the upper end of the valve chamber has a valve seat facing downward, and the lower end has a drain port at its tip and a drain plug with a cylindrical sealing surface above it. Two ring-shaped gaskets are connected to the valve seat and sealing surface, and a valve body made of a material with a specific gravity of less than 1 is attached to the valve body, which is pressed upward by a spring secured to the drain plug. A backflow prevention device for cold regions, characterized in that the valve chamber is housed in a chamber, a drainage channel is formed on the side of the valve chamber to connect an outflow port and a drainage port, and an intake valve is further provided on the upstream side of the valve seat. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1439188U JPH01118263U (en) | 1988-02-04 | 1988-02-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1439188U JPH01118263U (en) | 1988-02-04 | 1988-02-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01118263U true JPH01118263U (en) | 1989-08-10 |
Family
ID=31225548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1439188U Pending JPH01118263U (en) | 1988-02-04 | 1988-02-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01118263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311446A (en) * | 1997-05-07 | 1998-11-24 | Hikari Gokin Seisakusho:Kk | Drain type check valve |
| JP2011196499A (en) * | 2010-03-23 | 2011-10-06 | Mirai Ind Co Ltd | Drain vent valve |
-
1988
- 1988-02-04 JP JP1439188U patent/JPH01118263U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311446A (en) * | 1997-05-07 | 1998-11-24 | Hikari Gokin Seisakusho:Kk | Drain type check valve |
| JP2011196499A (en) * | 2010-03-23 | 2011-10-06 | Mirai Ind Co Ltd | Drain vent valve |
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