JPS63132175U

JPS63132175U -

Info

Publication number: JPS63132175U
Application number: JP456788U
Authority: JP
Priority date: 1988-01-18
Filing date: 1988-01-18
Publication date: 1988-08-30

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例におけるゲート弁
の要部を示す縦断面図、第２図は第１図の一部拡
大縦断面図、第３図はこの考案の他の実施例にお
けるゲート弁の一部拡大縦断面図、第４図は第１
図に示すシール弁の連動操作系の一例を示す説明
図である。１……上部本体、２……下部本体、３……弁体
、４……弁座、５……環状溝、６……シールリン
グ、６―１……切欠段部、７……上部空気室、８
……上部給排気口、９……下部空気室、１０……
下部給排気口、１１……シリンダ、１２，１３…
…電磁切換弁。 Fig. 1 is a vertical sectional view showing the main parts of a gate valve in one embodiment of this invention, Fig. 2 is a partially enlarged longitudinal sectional view of Fig. 1, and Fig. 3 is a gate valve in another embodiment of this invention. A partially enlarged vertical sectional view of the valve, Figure 4 is the first
It is an explanatory view showing an example of the interlocking operation system of the seal valve shown in the figure. 1... Upper body, 2... Lower body, 3... Valve body, 4... Valve seat, 5... Annular groove, 6... Seal ring, 6-1... Notch step, 7... Upper air room, 8
...Top supply/exhaust port, 9...Bottom air chamber, 10...
Lower supply/exhaust port, 11... Cylinder, 12, 13...
...Solenoid switching valve.

Claims

[Scope of Claim for Utility Model Registration] 1. In a gate valve that needs to shut off differential pressure in a pneumatic conveyance device, etc., a seal ring is slidably inserted into an annular groove surrounding the valve seat of the valve body. , an air chamber for pressure welding air is located deep inside the annular groove.
A sealing device for a gate valve, in which an air chamber for releasing pressurized air is provided on the outer side wall of an annular groove, and an air supply/exhaust port opening into the air chamber is bored in the valve body. 2. For gate valves that need to shut off differential pressure in pneumatic conveyance equipment, etc., a seal ring is slidably inserted into an annular groove surrounding the valve seat of the valve body, and a seal ring is installed deep inside the annular groove. A gate valve sealing device in which an air supply/exhaust port opening into an air chamber for pressurized air for pressure welding is provided in the valve body, and a notch step is provided on the outside of the outer end of the seal ring.