JPS59112073U

JPS59112073U - Overpressure check valve

Info

Publication number: JPS59112073U
Application number: JP560983U
Authority: JP
Inventors: 博高橋
Original assignee: 富士電機株式会社
Priority date: 1983-01-19
Filing date: 1983-01-19
Publication date: 1984-07-28
Also published as: JPH0234529Y2

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

[Brief explanation of the drawing]

第１図は退団阻止弁の使用例管路図、第２図および第３
図は従来の過圧阻止弁のそれぞれ常時および動作時の断
面側面図、第４図および第５図はそれぞれこの考案実施
例の断面側面図および第４図のＡ−Ａ部断面正面図、第
６図は第４図と異なる制限体をもったこの考案実施例の
断面側面図である。２０：開口、２３：弁ケース、２８：管路、４１：過圧
阻止弁、４２：内筒、４３ツラツパ、４６二流体流通口
、４７・・・受圧板、５０：仕切板、′５１：回動軸、
５３ニ一方の流入進路、５４：制限体、６１：めねじ、
６２：おねじ棒、６３：可撓紐体。Figure 1 is an example pipe diagram of the use of the withdrawal prevention valve, Figures 2 and 3 are
4 and 5 are respectively a sectional side view and a sectional front view taken along the line A-A in FIG. FIG. 6 is a sectional side view of an embodiment of the invention having a restriction body different from that in FIG. 4. 20: Opening, 23: Valve case, 28: Pipeline, 41: Overpressure check valve, 42: Inner cylinder, 43 Tsuratsupa, 46 Two fluid flow port, 47... Pressure receiving plate, 50: Partition plate, '51: rotation axis,
53 D One inflow path, 54: Limiting body, 61: Female thread,
62: Male thread rod, 63: Flexible string body.

Claims

[Scope of utility model registration request]

(1) A valve inserted into a fluid pipeline, which has an inner cylinder and a flapper inside a valve case equipped with two openings in the axial direction, one opening and the other opening. In an overpressure check valve that also allows passage of fluid in the opening direction and prevents the passage of fluid when the flow in a predetermined one direction reaches the predetermined flow velocity, an axial direction near the one opening of the inner cylinder - One end is closed and the other end is opened to the other opening and has a fluid communication port perpendicular to the axis, and the flapper is a rotor whose axis is perpendicular to the inflow passage for fluid from the one opening. a pressure receiving plate fixed to the moving shaft and facing the inflow path; and a partition plate that covers the fluid passage port of the inner cylinder by rotation of the pressure receiving plate, and a restriction member that limits the rotation angle of the flanges. An overpressure check valve characterized by being equipped with. −

(2) Scope of Utility Model Registration In the valve described in claim 1, the limiter is provided in the valve case and has a female thread that is screwed into the female thread and rotated so that its tip abuts the lower surface of the pressure receiving plate. An overpressure check valve comprising a threaded rod.

(3) Scope of Utility Model Registration In the valve described in claim 1, one end of the limiter is fixed to the flapper, and the other end is fixed to the valve case in a flexible string-like body whose length can be adjusted. An overpressure check valve characterized by:

(4) Scope of Utility Model Registration Claims For the valve described in paragraph 1,
An overpressure check valve characterized in that the rotating shaft is horizontally arranged on the ground side, and the center of gravity of the flapper is always on one opening side of a vertical plane containing the rotating shaft.