JPS59105601U

JPS59105601U - flow control device

Info

Publication number: JPS59105601U
Application number: JP20254982U
Authority: JP
Inventors: 今井　秀郎; 江藤　忠男; 豊大橋
Original assignee: ダイキン工業株式会社
Priority date: 1982-12-30
Filing date: 1982-12-30
Publication date: 1984-07-16

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 drawings]

第１図及び第２図は従来例を示すもので、第１図は流量
制御装置の説明図、第２図はその装置による制御状態の
説明図、第３図及び第４図はこの考案の一実施例を示し
、第３図は流量制御装置の説明図、第４図はその装置に
よる制御状態を示す説明図である。１・・・流体ポンプ、２・・・吐出ライン、７・・・流
量方向制御弁、８．９・・・パイロット室、１２・・・
本体、１３・・・スプール摺動室、１４・・・スプール
、１５ａ。１５ｂ、１５Ｃ・・・ランド、１６・・・流量調整オリ
フィス、２２．２３・・・スプリング、２４・・・流体
圧力制御手段、２５・・・分岐ライン、２６．　２７．
　２８・・・ＩＪ　ＩＪ−フ弁、２９・・・方向制御弁
。 −」…非：）２７ビ５1 and 2 show conventional examples. FIG. 1 is an explanatory diagram of a flow rate control device, FIG. 2 is an explanatory diagram of the control state by the device, and FIGS. 3 and 4 are diagrams of this device. One embodiment is shown, and FIG. 3 is an explanatory diagram of a flow rate control device, and FIG. 4 is an explanatory diagram showing a control state by the device. DESCRIPTION OF SYMBOLS 1...Fluid pump, 2...Discharge line, 7...Flow rate directional control valve, 8.9...Pilot chamber, 12...
Main body, 13... Spool sliding chamber, 14... Spool, 15a. 15b, 15C...land, 16...flow rate adjustment orifice, 22.23...spring, 24...fluid pressure control means, 25...branch line, 26. 27.
28...IJ IJ-fu valve, 29... Directional control valve. −”…Non: )27 Bi5

Claims

[Claims for Utility Model Registration] The flow rate control valve 7 has a spool 14 that slides in the axial direction within a spool sliding chamber 13 provided in its main body 12, and connects the ends of lands 1 and 5b provided in the spool 14 with the spool. This flow rate adjusting orifice 16 can be adjusted by adjusting the opening degree of the flow rate adjusting orifice 16 formed between the sliding chamber 13 and the inner wall.
This flow rate control valve 7 is further provided with a spring 23 that biases the spool 14 in its axial direction.
A pilot chamber 8 is provided for pressing the spool 14 in a direction opposite to the direction of the urging force by the spring 23 and moving it against the urging force by the spring 23. Connected to the pilot chamber 8 of the flow rate control valve 7, the fluid pressure control means 24 branches a branch line 25 from the discharge line 2, connects a plurality of relief valves 26 in parallel to this branch line 25, and connects these relief valves 26 in parallel. A directional control valve 29 is provided for selectively operating one of the relief valves 26, and the fluid pressure guided to the pilot chamber 8 via the discharge line 2 is controlled by the operation of the relief valve 26. Characteristic flow control device.