JPH0260784U

JPH0260784U -

Info

Publication number: JPH0260784U
Application number: JP13923788U
Authority: JP
Priority date: 1988-10-27
Filing date: 1988-10-27
Publication date: 1990-05-07

Description

[Brief explanation of drawings]

第１図は本考案に係る手動弁の一実施例を示す
断面図、第２図は同じく安全機構を構成するネジ
リングの斜視図、第３図Ａ，Ｂ，Ｃは同じく安全
機構の動作状態を示す説明図、第４図は従来の手
動弁の一例を示す断面図である。１０……ボデイ本体、１１……流通路、１２…
…連通口、１３……口部、１５……ボンネツト、
１６……雄ネジ部、１７……ハンドル、１８……
ゴムリング、１９……ネジリング、２０……雌ネ
ジ部、２４……弁棒、２５……弁体、Ｆ……衝撃
荷重。 Fig. 1 is a sectional view showing an embodiment of the manual valve according to the present invention, Fig. 2 is a perspective view of a threaded ring constituting the safety mechanism, and Figs. 3 A, B, and C show the operating state of the safety mechanism. The explanatory diagram shown in FIG. 4 is a sectional view showing an example of a conventional manual valve. 10... Body main body, 11... Distribution path, 12...
...Communication port, 13...Mouth, 15...Bonnet,
16...Male thread part, 17...Handle, 18...
Rubber ring, 19... Threaded ring, 20... Female threaded portion, 24... Valve stem, 25... Valve body, F... Impact load.

Claims

[Claims for Utility Model Registration] 1. A valve stem inserted and supported in the mouth of the body main body through a bonnet so as to be movable with a predetermined stroke in the valve opening/closing direction by rotation of the handle, and In this valve, the valve stem is provided with a valve element at the tip of the valve stem that sets the communication port of the fluid flow path in the body to a fully closed position, an intermediate position, or a fully open position. A manual valve characterized by having a safety mechanism that can forcibly slide in the valve closing direction while opening the screwed state under load. 2. A valve stem is inserted and supported in the bonnet provided at the mouth of the body body by threading the handles together in a serrated manner, and the threaded part of the handle to which the valve stems are connected is subjected to an impact in the valve closing direction of a predetermined amount or more. 2. The manual valve according to claim 1, further comprising a safety mechanism that can be opened by a load. 3 The threaded portion of the handle is formed of a threaded ring that is flexible in the circumferential direction, and this threaded ring is elastically deformed to release the threaded state in the circumferential direction by an impact load in the valve closing direction that exceeds a predetermined value. 3. The valve safety device according to claim 2, wherein the valve safety device is made of: