JPH0312060U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例のボールバルブの断面
図、第２図は第１図の入口側環状弁座の拡大断面
図である。 １……本体、３……端部材、４……入口、５…
…出口、６……弁室、７……弁ボール、８……貫
通孔、１１，１２……環状弁座、１５，１６……
皿バネ、１７，１８……Ｏリング、１９，２０…
…リツプ、２２……弁軸。 FIG. 1 is a sectional view of a ball valve according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the annular valve seat on the inlet side of FIG. 1...Main body, 3...End member, 4...Inlet, 5...
... Outlet, 6 ... Valve chamber, 7 ... Valve ball, 8 ... Through hole, 11, 12 ... Annular valve seat, 15, 16 ...
Disc spring, 17, 18...O ring, 19, 20...
...Lip, 22...Valve stem.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 流体通路を形成する弁ケーシング内に、貫通孔
を有する弁ボールを配設し、弁ケーシングを気密
的に貫通した弁軸で弁ボールを回転操作し、弁ボ
ールに当接して流体通路の開閉作用を弁ボールと
共に協働する合成樹脂や合成ゴムで作つた環状弁
座を流体通路内に配置し、環状弁座の外周に形成
した環状溝にＯリングを配置したもの於いて、環
状溝を形成する環状弁座の背面側の部位をリツプ
形状に形成してその外周がケーシングの壁面に当
接するようにし、当該リツプをＯリングに付勢す
る弾性部材を配置したボールバルブ。 A valve ball with a through hole is arranged in a valve casing that forms a fluid passage, and the valve shaft that passes through the valve casing in an airtight manner rotates the valve ball, and when it comes into contact with the valve ball, it opens and closes the fluid passage. An annular valve seat made of synthetic resin or synthetic rubber that works together with a valve ball is placed in the fluid passage, and an O-ring is placed in an annular groove formed on the outer periphery of the annular valve seat, forming an annular groove. A ball valve in which the back side of an annular valve seat is formed into a lip shape so that its outer periphery comes into contact with the wall surface of a casing, and an elastic member is arranged to bias the lip against an O-ring.