JPS6418315U

JPS6418315U -

Info

Publication number: JPS6418315U
Application number: JP1987110014U
Authority: JP
Priority date: 1987-07-20
Filing date: 1987-07-20
Publication date: 1989-01-30
Anticipated expiration: 2002-07-20
Also published as: JPH082734Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す全体構成図、
第２図は第１図の要部を示す拡大図、第３図は第
２図の別の実施例を示す図面、第４図は第１図の
パイロツト弁を示す側断面図、第５図は従来の減
圧弁を示す全体構成図、第６図および第７図は第
５図の要部の閉弁時および小流量開弁時を示す図
面、第８図はハンチングを説明する模式図、第９
図は第５図のパイロツト弁を示す側断面図である
。 θ……テーパ、ε……クリアランス、Ｒ……半
径、１……主弁、６……上部室、８……自動空気
抜き弁、９……弁座、１０……弁体、１３……フ
ランジ部、１５……円錐部、１６……曲面部。 FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
Fig. 2 is an enlarged view showing the main parts of Fig. 1, Fig. 3 is a drawing showing another embodiment of Fig. 2, Fig. 4 is a side sectional view showing the pilot valve of Fig. 1, Fig. 5 6 and 7 are drawings showing the main parts of FIG. 5 when the valve is closed and when the small flow rate valve is opened, and FIG. 8 is a schematic diagram illustrating hunting, 9th
This figure is a side sectional view showing the pilot valve of FIG. 5. θ... Taper, ε... Clearance, R... Radius, 1... Main valve, 6... Upper chamber, 8... Automatic air vent valve, 9... Valve seat, 10... Valve body, 13... Flange part, 15... cone part, 16... curved surface part.

補正昭６３．５．１９実用新案登録請求の範囲を次のように補正する
。Amendment May 19, 1983 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】主弁の弁体の上部に設けられた上部室をパイロ
ツト弁を介して２次側に接続した減圧弁において
、ケーシングの一次側方向に前記主弁の弁体を全
閉するように弁座を設け、該弁体の形状は円筒部
と円錐部と該円錐部に連続した曲面部とから形成
されていることを特徴とする減圧弁。[Claims for Utility Model Registration] In a pressure reducing valve in which an upper chamber provided above a valve body of a main valve is connected to a secondary side via a pilot valve, the valve body of the main valve is connected in the direction of the primary side of a casing. 1. A pressure reducing valve, characterized in that a valve seat is provided so as to be fully closed, and the valve body is formed of a cylindrical portion, a conical portion, and a curved surface portion continuous with the conical portion.

Claims

[Scope of utility model registration request]

In a pressure reducing valve in which the upper chamber provided above the valve body of the main valve is connected to the secondary side via a pilot valve, the valve seat is moved toward the primary side of the casing so as to fully close the valve body of the main valve. The valve body is formed with a conical part and a curved part continuous to the conical part, and an automatic air vent valve is provided in the upper chamber, and the lower end of the valve body of the pilot valve is attached to the casing via a bellows. What is claimed is: 1. A pressure reducing valve, characterized in that it is supported so as to be movable up and down, and its upper end extension is in sliding contact with the inner hole of an adjustment bolt provided above the casing.