JPH03117176U

JPH03117176U -

Info

Publication number: JPH03117176U
Application number: JP2643190U
Authority: JP
Priority date: 1990-03-15
Filing date: 1990-03-15
Publication date: 1991-12-04

Description

[Brief explanation of drawings]

第１〜５図は本考案の第１実施例を示すもので
、第１図は流量制御弁の断面図、第２図はその開
弁状態の断面図、第３図は第２のバルブの拡大断
面図、第４図はその底面図、第５図は第２のバル
ブの変更例の断面図である。第６〜８図は本考案
の第２実施例を示すもので、第６図は流量制御弁
の断面図、第７図は第２のバルブの拡大断面図、
第８図はその底面図である。第９，１０図は本考
案の第３実施例を示すもので、第９図は流量制御
弁の断面図、第１０図は流量特性線図である。１……ステツプモータ、１０……バルブシート
、１２……バルブシヤフト、１３……回転子、１
８……第１のバルブ、２９……第２のバルブ。 Figures 1 to 5 show the first embodiment of the present invention, in which Figure 1 is a sectional view of the flow control valve, Figure 2 is a sectional view of the valve in its open state, and Figure 3 is a sectional view of the second valve. FIG. 4 is an enlarged sectional view, FIG. 4 is a bottom view thereof, and FIG. 5 is a sectional view of a modified example of the second valve. 6 to 8 show a second embodiment of the present invention, in which FIG. 6 is a sectional view of the flow control valve, FIG. 7 is an enlarged sectional view of the second valve,
FIG. 8 is a bottom view thereof. 9 and 10 show a third embodiment of the present invention, in which FIG. 9 is a sectional view of a flow rate control valve, and FIG. 10 is a flow rate characteristic diagram. 1...Step motor, 10...Valve seat, 12...Valve shaft, 13...Rotor, 1
8...first valve, 29...second valve.

Claims

[Claims for Utility Model Registration] In a flow control valve that converts the rotational motion of a rotor of a step motor into linear motion of a valve shaft through a screw means, and controls the flow rate of fluid by the linear motion of the valve shaft. , characterized in that the valve shaft is provided with a first valve that controls the cross-sectional area of the flow path of the valve seat in the middle of the flow path, and a second valve that controls the flow rate when the first valve is in a closed state. flow control valve.