JPH043170U

JPH043170U -

Info

Publication number: JPH043170U
Application number: JP4515690U
Authority: JP
Priority date: 1990-04-25
Filing date: 1990-04-25
Publication date: 1992-01-13

Description

[Brief explanation of drawings]

第１図および第２図は本考案の第１実施例に係
る制御弁を示しており、第１図は要部縦断面図、
第２図は全体構成を示す概略縦断面図、第３図は
本考案の制御弁の制御特性図、第４図ａは第２実
施例に係る制御弁の要部縦断面図、第４図ｂは同
図ａのピンの部分の要部斜視図、第５図は第３実
施例に係る制御弁の要部縦断面図、第６図は第４
実施例に係る制御弁の要部縦断面図、第７図は従
来の制御弁の概略構成を示す縦断面図、第８図は
第７図の制御弁の制御特性図、第９図は第７図の
制御弁の要部縦断面図である。符号の説明、１……弁箱、２……ダイアフラム
、３……弁体、３１……中央段凸部、３２……外
径側段凹部、４……弁座、４１……内径側段凹部
、４２……外径側段凸部、５……流路、６……流
入口、７……ばね、８……シール部、９……乱流
発生部、１０，１４……凹凸部、１１……ピン、
１２……ピン穴、１３……スリツト。 1 and 2 show a control valve according to a first embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view of main parts;
FIG. 2 is a schematic longitudinal sectional view showing the overall configuration, FIG. 3 is a control characteristic diagram of the control valve of the present invention, FIG. 4a is a longitudinal sectional view of the main part of the control valve according to the second embodiment, b is a perspective view of the main part of the pin portion in figure a, FIG. 5 is a vertical sectional view of the main part of the control valve according to the third embodiment, and FIG.
FIG. 7 is a longitudinal sectional view of a main part of a control valve according to an embodiment, FIG. 7 is a vertical sectional view showing a schematic configuration of a conventional control valve, FIG. 8 is a control characteristic diagram of the control valve of FIG. FIG. 8 is a longitudinal cross-sectional view of a main part of the control valve shown in FIG. 7; Explanation of symbols, 1...Valve box, 2...Diaphragm, 3...Valve body, 31...Central step protrusion, 32...Outer diameter side step recess, 4...Valve seat, 41...Inner diameter side step Recessed portion, 42... Outer diameter side step convex portion, 5... Channel, 6... Inflow port, 7... Spring, 8... Seal portion, 9... Turbulent flow generating portion, 10, 14... Uneven portion , 11...pin,
12...pin hole, 13...slit.

Claims

[Scope of Claim for Utility Model Registration] In a control valve that opens and closes a flow path opening to the valve seat by bringing a valve body into contact with and separating from a valve seat provided in a valve box, the area between the contact surfaces between the valve body and the valve seat. A control valve comprising: a seal portion that surrounds a flow path opening and is in close contact with the entire circumference; and a turbulence generating portion formed by an uneven surface adjacent to the outside of the seal portion. .