JPH0281974U

JPH0281974U -

Info

Publication number: JPH0281974U
Application number: JP16144288U
Authority: JP
Priority date: 1988-12-13
Filing date: 1988-12-13
Publication date: 1990-06-25
Anticipated expiration: 2003-12-13
Also published as: JPH077657Y2

Description

[Brief explanation of drawings]

第１図Ａ，Ｂ，Ｃは第１の考案の一実施例を示
す平断面図であり、第１図Ａは開状態を示す図、
第１図Ｂは空気抜き等を行う場合の状態を示す図
、第１図Ｃは上流側のガス漏れの有無を検査する
場合の状態を示す図、第２図は第１図Ａの−
矢視断面図、第３図Ａ，Ｂ，Ｃは第２の考案の一
実施例を示す平断面図であり、それぞれ第１図Ａ
，Ｂ，Ｃと同様の図である。１……コツク本体、２……ボール弁、１１ａ…
…流入路、１２ｂ……流出路、１２ｄ……検査孔
、１３ａ……流入側の弁座、１４ａ……流出側の
弁座、１５……弁収納室、２１……ガス通路。 1A, B, and C are plan sectional views showing an embodiment of the first invention, and FIG. 1A is a view showing an open state;
Fig. 1B is a diagram showing the state when air is vented, etc., Fig. 1C is a diagram showing the state when inspecting for gas leakage on the upstream side, and Fig. 2 is a diagram showing the state in which the presence or absence of gas leakage on the upstream side is inspected.
3A, B, and C are plan sectional views showing an embodiment of the second invention, and FIG.
, B, and C. 1...Kotsuku body, 2...Ball valve, 11a...
...Inflow path, 12b...Outflow path, 12d...Inspection hole, 13a...Valve seat on the inflow side, 14a...Valve seat on the outflow side, 15...Valve storage chamber, 21...Gas passage.

Claims

[Scope of Claim for Utility Model Registration] (1) An inflow passage through which gas flows in, an outflow passage through which gas flows out, a valve storage chamber located between these inflow passages and the outflow passage, and a connection between the valve storage chamber and the inflow passage. An annular inlet-side valve seat formed to surround the inflow passage at the intersection, and an annular outflow-side valve seat formed to surround the outflow passage at the intersection of the valve storage chamber and the outflow passage. and a ball valve that is rotatably provided in a valve storage chamber of the main body in contact with the two valve seats, and the ball valve has a ball valve that penetrates through the inside and has one end. The inflow passage and the outflow passage are communicated by an opening facing the inflow passage via the inflow side valve seat, and an opening at the other end facing the outflow passage through the outflow side valve seat. In a ball socket in which a gas passage is formed in which both openings are located between two valve seats when the ball valve blocks an inflow passage and an outflow passage, one end is attached to the valve body. An inspection hole is formed that opens on the inner surface of the valve storage chamber and the other end opens on the outer surface of the Kotoku main body, and each opening faces the width of both openings of the gas passage in the direction of rotation of the ball valve. A ball socket characterized in that the width is wider than the valve seat, and the width of one opening of the gas passage is wider than the width of the other opening. (2) An inflow passage through which gas flows in, an outflow passage through which gas flows out, a valve housing chamber located between these inflow passages and the outflow passage, and a structure surrounding the inflow passage at the intersection of the valve housing chamber and the inflow passage. A Kotuku main body having an inflow side valve seat formed therein, and an outflow path side valve seat formed at the intersection of the valve storage chamber and the outflow path so as to surround the outflow path, and a valve storage in the Kotuku main body. A ball valve is rotatably provided in the chamber in contact with the two valve seats, and the ball valve has an opening extending through the inside thereof and opening at one end of the ball valve through the inflow side valve seats. The ball valve communicates with the inflow passage by facing the inflow passage and the other end opening facing the outflow passage via the outflow side valve seat, and the ball valve communicates with the inflow passage and the outflow passage. In a ball socket in which a gas passage is formed in which both openings are located between two valve seats when the valve seat is shut off, one end of the socket main body is opened to the inner surface of the valve storage chamber,
The other end forms an inspection hole that opens on the outer surface of the Kotuku main body, and the width of the two valve seats in the rotation direction of the ball valve is set to be larger than the width of each opening of the gas passage that each valve seat faces. A ball valve is narrow, and the width of one valve seat is narrower than the width of the other valve seat.