JPH0447710U

JPH0447710U -

Info

Publication number: JPH0447710U
Application number: JP9030290U
Authority: JP
Priority date: 1990-08-28
Filing date: 1990-08-28
Publication date: 1992-04-23

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例におけるパイロツト
弁の全体断面図、第２図は本考案の他の実施例に
おけるパイロツト弁の全体構成図、第３図は本考
案のさらに他の実施例における係止体と係合溝を
示す要部拡大図、第４図は従来の耐震貯水槽に対
する配管図、第５図は従来の緊急遮断弁を示す全
体断面図、第６図は従来の緊急開放弁を示す全体
断面図、第７図は従来のパイロツト回路Ａの配管
図、第８図は従来のパイロツト弁の全体断面図で
ある。６１……弁箱、６５，８１……弁座、６６，８
３……弁体、６７……弁軸、６８……ダイヤフラ
ム、６９……作動用スプリング、７１……圧力室
、７２……貫通孔、７３……被制御流体、７４，
９１……係合溝、７５……係止爪、７６……ロツ
ク用スプリング、９２……球体。 Fig. 1 is an overall sectional view of a pilot valve in one embodiment of the invention, Fig. 2 is an overall configuration diagram of a pilot valve in another embodiment of the invention, and Fig. 3 is an overall sectional view of a pilot valve in another embodiment of the invention. An enlarged view of the main parts showing the locking body and the engagement groove, Fig. 4 is a piping diagram for a conventional earthquake-resistant water tank, Fig. 5 is an overall sectional view showing a conventional emergency shutoff valve, and Fig. 6 is a conventional emergency opening. FIG. 7 is a piping diagram of a conventional pilot circuit A, and FIG. 8 is an overall sectional view of a conventional pilot valve. 61... Valve box, 65, 81... Valve seat, 66, 8
3... Valve body, 67... Valve shaft, 68... Diaphragm, 69... Operating spring, 71... Pressure chamber, 72... Through hole, 73... Controlled fluid, 74,
91... Engagement groove, 75... Locking pawl, 76... Locking spring, 92... Ball.

Claims

[Scope of utility model registration request]

A valve body that is provided to be movable toward the valve seat between a fully open position and a fully closed position, a valve shaft that moves in and out together with the valve body, and a valve body that urges the valve body along the direction of movement. An operating spring, a pressure chamber that is provided in communication with the internal flow path of the valve box and urges the valve element against the urging force of the spring by the fluid pressure of the controlled fluid flowing into the internal space, and the valve element. A locking body that engages with an engagement groove formed in the valve stem to lock the valve stem at the position where the valve is opened and closed by the biasing force of the spring, and a locking body that urges the locking body toward the valve stem. A pilot valve with a locking mechanism, characterized in that it is equipped with a locking spring.