JPH032985U

JPH032985U -

Info

Publication number: JPH032985U
Application number: JP6361489U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-11

Description

[Brief explanation of drawings]

第１図は閉じた状態の従来装置の縦断面図、第
２図は開いた状態の従来装置の縦断面図、第３図
はこの考案の実施例装置のそれが閉じた状態の縦
断面図、第４図イ〜ハは作動説明図である。１…主開閉弁、２…ケーシング、３…入口側通
路、４…出口側通路、５…弁座、６…弁体、７…
パイロツト室、８…通路、１２…フロート弁、１
５…ケーシング、１６…弁体、１７…弁座、１８
…揺動レバー、２２…昇降ロツド、２４…フロー
ト、２５…ストツパー。 Fig. 1 is a longitudinal sectional view of the conventional device in the closed state, Fig. 2 is a longitudinal sectional view of the conventional device in the open state, and Fig. 3 is a longitudinal sectional view of the embodiment of the device of this invention in the closed state. , FIGS. 4A to 4C are operation explanatory diagrams. 1... Main on-off valve, 2... Casing, 3... Inlet side passage, 4... Outlet side passage, 5... Valve seat, 6... Valve body, 7...
Pilot chamber, 8... passage, 12... float valve, 1
5...Casing, 16...Valve body, 17...Valve seat, 18
... Swinging lever, 22... Lifting rod, 24... Float, 25... Stopper.

Claims

[Scope of utility model registration request]

Main on-off valve 1 and float valve 12 for pilot
The main on-off valve 1 has a casing 2 and an outlet side passage 4 in the casing 2.
It has a valve body 6 which is provided to be movable forward and backward with respect to the valve seat 5, and a pilot chamber 7 partitioned by the valve body 6 and the casing 2,
A passage 8 is formed in the valve body 6 to communicate the inlet side passage 3 of the casing 2 with the pilot chamber 7,
An inlet end 13 of the float valve 12 is connected to the pilot chamber 7, and the float valve 12 includes a casing 15 and a valve body 16 housed within the casing 15 and pressed against a valve seat 17 by hydraulic pressure. and a swinging lever 1 which is pivotally attached to the casing 15 at the middle of its length and which moves the valve body 16 away from the valve seat 17 at one end.
8, a lifting rod 22 pivotally connected to the other end of the swing lever 18, a float 24 fitted to the lifting rod 22 so as to be movable up and down, and the float 2.
It has a pair of upper and lower stoppers 25 provided on the lifting rod 22 to restrict the vertical movement range of the lever 18. When the lifting rod 22 is lowered, the swing lever 18
The automatic opening/closing valve device is operated by a change in the liquid level, in which the valve body 16 is separated from the valve seat 17 by the change in the liquid level.