JPS6291080U

JPS6291080U -

Info

Publication number: JPS6291080U
Application number: JP18313385U
Authority: JP
Priority date: 1985-11-28
Filing date: 1985-11-28
Publication date: 1987-06-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示した流体制御弁
装置の一部を回路図とした縦断面図、第２図は第
１図における電磁比例可変絞り弁の縦断面図、第
３図ないし第５図はそれぞれ他の実施例図、第６
図は従来例図である。８……弁本体、９……大径孔、１０……第１小
径孔、１１……第２小径孔、１２……弁座、１３
……摺動孔、１４……流入路、１５……流出路、
１６……弁体、１７……着座面、１８……弁部、
２０……第１ピストン部、２１……第２ピストン
部、２４……第１作用室、３０……第２作用室、
３２……絞り、３３……ばね、３５……パイロツ
ト流路。 Fig. 1 is a vertical sectional view showing a circuit diagram of a part of a fluid control valve device showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the electromagnetic proportional variable throttle valve in Fig. 1, and Fig. 3 5 to 5 are other embodiment diagrams, and FIG.
The figure is a diagram of a conventional example. 8... Valve body, 9... Large diameter hole, 10... First small diameter hole, 11... Second small diameter hole, 12... Valve seat, 13
...Sliding hole, 14...Inflow path, 15...Outflow path,
16... Valve body, 17... Seating surface, 18... Valve part,
20... first piston part, 21... second piston part, 24... first working chamber, 30... second working chamber,
32... Throttle, 33... Spring, 35... Pilot flow path.

Claims

[Scope of utility model registration request]

A large-diameter valve body has a sliding hole with a first small-diameter hole and a second small-diameter hole connected to each other on both sides of the large-diameter hole, and a valve seat formed in the step where the large-diameter hole and the first small-diameter hole are connected. having an inlet passage communicating with the hole and an outlet passage communicating with the first small diameter hole;
A valve body that is attached to and separated from the valve seat is slidably inserted into the sliding hole, and an elastic member that urges the valve body in the seating direction is housed. The valve part has a tapered seating surface whose diameter is gradually reduced from the diameter hole side to the first small diameter hole side, and the first small diameter hole is arranged so as to balance the acting force based on the fluid pressure acting on the valve part in the unseating direction. The valve comprises a first piston part that is slidably inserted into the hole and connected to the valve part via a connecting part, and a second piston part that is slidably inserted into the second small diameter hole and connected to the valve part. A pilot fluid having a constant pressure, which is different from the fluid in the inflow passage, is introduced between the valve body and the valve body so as to press the valve body in the unseating direction, and a throttle is used to press the valve body in the seating direction. A second action chamber is formed into which the fluid of the inflow channel is introduced, and the valve body is slid to a position where the action force due to the fluid pressure difference between the first action chamber and the second action chamber is balanced with the elastic force of the elastic member. In order to regulate the opening degree or to shut off the inflow and outflow passages, the pilot passageway that communicates the second working chamber with the low pressure side is throttled and communicated with the opening degree according to the supplied current value. A fluid control valve device equipped with an electromagnetically operated valve mechanism that shuts off the flow.