JPS5847910U

JPS5847910U - Pressure reducing valve

Info

Publication number: JPS5847910U
Application number: JP14469781U
Authority: JP
Inventors: 秀治足立; 佐藤　英隆
Original assignee: 株式会社ノーリツ; 株式会社ヨシタケ製作所
Priority date: 1981-09-28
Filing date: 1981-09-28
Publication date: 1983-03-31
Also published as: JPS638967Y2

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】[Brief explanation of drawings]

図は本考案の一実施例を示すものにして、１図は減圧弁
の配管図、第２図は本考案に係る減圧弁の断面図、第３
図は要部の拡大断面図、第４図は同上作動時の断面図、
第５図は第３図のＡ−Ａ断面図である。４・・・−次側圧力室、６・・・二次側圧力室、８・・
・弁口、９・・・ダイヤフラム、１２・・・調節ばね、
１３・・・弁棒、１６・・・弁体、２０・・・連通路、
２１・・・逃し弁、２７・・・調圧ばね。The figures show one embodiment of the present invention, in which Figure 1 is a piping diagram of a pressure reducing valve, Figure 2 is a sectional view of a pressure reducing valve according to the present invention, and Figure 3 is a sectional view of a pressure reducing valve according to the present invention.
The figure is an enlarged cross-sectional view of the main part, Figure 4 is a cross-sectional view of the same when the above is in operation,
FIG. 5 is a sectional view taken along the line AA in FIG. 3. 4... - Outgoing side pressure chamber, 6... Secondary side pressure chamber, 8...
・Valve port, 9...diaphragm, 12...adjustment spring,
13... Valve stem, 16... Valve body, 20... Communication path,
21... Relief valve, 27... Pressure regulating spring.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

一次側圧力室と二次側圧室を連通ずる弁口を設け、該弁
口を開閉する弁体を二次側圧力室の圧力変動に対応して
変位するダイヤフラムに上端部を取付けた弁棒の下端部
に取付け、ダイヤフラム側に弁体を開弁弾圧する調整ば
ねを圧入す乏と共に弁棒の下端部側に弁体を閉弁弾圧す
る調圧ばねを圧入せしめて成る減圧弁において、弁棒の
軸心に一端が一次側圧力室内に開口し、他端が弁棒下端
面に開口して一次側圧力室と二次側圧力室を連通せしめ
る連通路を形成せしめ、該連通路を閉塞する逃し弁を弁
棒の下端部と調圧ばねとの間に介入して弁棒の下端部に
遊嵌せしめたことを特徴とする減圧弁。A valve port that communicates between the primary pressure chamber and the secondary pressure chamber is provided, and the valve body that opens and closes the valve port is a valve stem whose upper end is attached to a diaphragm that is displaced in response to pressure fluctuations in the secondary pressure chamber. In a pressure reducing valve, a pressure regulating spring is attached to the lower end of the valve stem and a pressure regulating spring is press-fitted into the diaphragm side to apply pressure to open the valve element, and a pressure regulating spring is press-fitted to the lower end side of the valve stem to apply pressure to close the valve element. One end opens into the primary pressure chamber at the axis of the valve, and the other end opens into the lower end surface of the valve stem to form a communication passage that communicates the primary pressure chamber and the secondary pressure chamber, and closes the communication passage. A pressure reducing valve characterized in that a relief valve is interposed between the lower end of the valve stem and a pressure regulating spring and loosely fitted to the lower end of the valve stem.