JPS586000U

JPS586000U - Shuttle valve for loading arm equipped with emergency activation means

Info

Publication number: JPS586000U
Application number: JP9763981U
Authority: JP
Inventors: 博吉田
Original assignee: 日本エムコ・ウイ−トン株式会社
Priority date: 1981-07-02
Filing date: 1981-07-02
Publication date: 1983-01-14

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】第１図は本考案によるしゃ断弁を備えたローデングアー
ムの概略図、第２図は本考案の第１の実施例のしゃ断弁
の縦断面図で、主弁開口部が完全に開放されたときの状
態を示す図、第３図は第２図のしゃ断弁の出口附近の絞
り部およびこれに連結されたドロップパイプの一部を示
す部分断面図、第４図は第２図のしゃ断弁が緊急時に閉
鎖されたときの状態を示す縦断面図、第５図は本考案の
第２の実施例のしゃ断弁の部分縦断面図である。３２・・・弁ケーシング、３２ａ・・・入口、３２ｂ・
・・出口、３２Ｃ・・・主弁開口部、３６・・・主弁、
４０・・・中空ピストン、５０・・・ロンド、５６．５
８・・リッド昇降手段、５１，６２ｂ、６２ｂ’　、６
４．６６・・・錠止手段、６２・・・補助弁、６３・・
・貫通孔、７６・・・ばね、８０．２２０・・・ダイヤ
フラム弁、８２゜２０２・・・作用棒、８６，２２８・
・・作用室、９０゜９４、　９６．　９８・・・絞り部
、１０８・・・導管。[Brief Description of the Drawings] Fig. 1 is a schematic diagram of a loading arm equipped with a shutoff valve according to the present invention, and Fig. 2 is a longitudinal sectional view of the shutoff valve according to the first embodiment of the present invention, showing the main valve opening. Figure 3 is a partial cross-sectional view showing the constriction near the outlet of the shutoff valve in Figure 2 and a part of the drop pipe connected to it. FIG. 2 is a vertical cross-sectional view showing the state in which the shut-off valve is closed in an emergency, and FIG. 5 is a partial vertical cross-sectional view of the shut-off valve according to the second embodiment of the present invention. 32... Valve casing, 32a... Inlet, 32b.
...Outlet, 32C...Main valve opening, 36...Main valve,
40...Hollow piston, 50...Rondo, 56.5
8...Lid lifting means, 51, 62b, 62b', 6
4.66... Locking means, 62... Auxiliary valve, 63...
・Through hole, 76... Spring, 80.220... Diaphragm valve, 82° 202... Action rod, 86,228.
...Action chamber, 90°94, 96. 98... Throttle part, 108... Conduit.

Claims

[Scope of utility model registration request]

(1) A valve caning that has an inlet and an outlet and a main valve opening between them, a main valve that has a hollow piston and opens and closes the main valve opening, and a main valve that constantly closes the through hole of the main valve. In a loading arm shutoff valve having an auxiliary valve pressed by a spring against the main valve, and an opening/closing means for the main valve and the auxiliary valve, the opening/closing means for the main valve and the auxiliary valve include: It has a rod extending slidably through the center of the auxiliary valve, and a rod elevating means that engages one end of the rod, and the auxiliary valve and the rod are connected by an unlockable locking means. A working rod is connected and operatively connected to the diaphragm valve so as to face the free end of the rod opposite the rod lifting means, the working chamber containing the diaphragm valve being connected on the one hand to the flow of the liquid to be supplied. A locking means is provided by means of an actuating rod which communicates with a constriction provided in the channel and, on the other hand, with a conduit opening into a tank supplied with liquid, and which moves towards the rod when the diaphragm valve is actuated. A shutoff valve is characterized in that the valve is shut off by unlocking.

(2) The unlockable locking means is provided in an annular groove provided in the free end of the rod and in a sleeve portion extending axially from the auxiliary valve and slidably engaging the rod. a ball holding hole fitted in the annular groove and the ball holding hole; a main body portion slidably fitting with the outer peripheral surface of the sleeve portion; and an inner diameter of the main body portion extending from the main body portion. a ball holding member having an extension portion having an inner diameter slightly larger than that of the ball holding member;
The shutoff valve according to claim 1, which has dimensions such that the ball does not protrude from the outer peripheral surface of the sleeve portion.

(3) The cutoff valve according to claim 1, wherein the operating rod is directly connected to the center of the diaphragm valve.

(4) The shutoff valve according to claim 1', wherein the operating rod is operatively connected to a diaphragm valve via an inclined cam movable perpendicularly to the axis of the operating rod.

(5) The cutoff valve according to claim 3, wherein the diaphragm valve is always biased in a direction away from the rod by a conical coil spring.

(6) The shutoff valve according to claim 1, wherein the throttle portion is formed near the outlet of the valve housing.

(7) The cutoff valve according to claim 1, which is a registered utility model, wherein a conduit communicating with the inside of the valve housing is provided, and a constriction portion is separately connected to the conduit.

(8) The constricted portion includes a tapered portion whose diameter gradually decreases, and an equal diameter portion having the same diameter as the minimum diameter of the tapered portion. It consists of an equal diameter part and a widening part whose diameter gradually increases,
The shutoff valve according to claim 1, 6, or 7, wherein a conduit communicating with the working chamber of the diaphragm is opened in the equal diameter portion.