JPS5992906U - pressure control valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Figures 1 to 6 show the principle and usage examples of this invention. Figure 1 shows the pressure control valve and its piping applied to an automatic set pressure adjustment device, and Figure 2 shows the electropneumatic proportional valve. Figure 3 is a block diagram showing the electrical configuration of the automatic set pressure regulator, and Figure 4 is a diagram showing the relationship between the current and secondary pressure of the pressure control valve stored in the storage device. A diagram showing output voltage data, FIG. 5 is a diagram showing a part of the storage device,
Figure 6 is a flowchart showing the processing procedure of the CPU;
The figure is a longitudinal sectional view showing an embodiment of this invention. 6.6A...Pressure control valve, 61...Input port, 6
2... Output port, 63... Relief port, 6
5... Supply valve body, 66... IJ IJ-F valve body, 6
7...Shaft, 68...Pilot piston,
71° 73... Spring, 74a... Pilot chamber, 74b... Feedback chamber, 75A, 75B.
... Valve body operating protrusion, 79.79A... Check piston, 79a... Pressure receiving part, 79b... Braking part, 80
a... Pressurized chamber. Correction 1984. 1.17 The claims for utility model registration and the brief description of the drawings are amended as follows. O Utility Model Registration Claims A supply valve element that controls the flow of fluid between an input port and an output port, which is disposed opposite to the supply valve element and that controls the flow of fluid between the output port and the relief port. control +)
A leaf valve body, a shaft that slidably passes through both of the valve bodies, a spring that biases the supply valve body in the closing direction of the supply valve body, which is a direction from one end of the shaft to the other end, and a spring that biases the supply valve body from the other end of the shaft. A spring that biases the relief valve element in the closing direction of the relief valve element, which is the direction toward one end, is fixed to the shaft, and when the shaft moves in the closing direction of the supply valve element, the relief valve element opens, and the shaft acts as the relief valve. a valve body actuating member that opens the supply valve body when moved in the valve-closing direction of the body; a pilot piston fixed to the other end of the shaft;
An output pressure feedback chamber and a pilot chamber defined by a piston, a brake section provided on an extension of the other end of the shaft and whose inner end protrudes into the pilot chamber, and a brake section fixed to the outer end of the brake section and provided on the outer end of the shaft. A pressure control valve comprising a check piston consisting of a pressure receiving part whose diameter is larger than the diameter of the braking part, and a pressurizing chamber partitioned by the pressure receiving part and pressurizing the outer end surface of the pressure receiving part. Brief Description of the Drawings Figures 1 to 6 show the principle of this invention and an example of its use. Figure 1 shows a pressure control valve and its piping applied to an automatic set pressure adjustment device, and Figure 2 is a diagram showing the relationship between the current of the electropneumatic proportional valve and the secondary pressure, Figure 3 is a block diagram showing the electrical configuration of the automatic set pressure regulator, and Figure 4 is the pressure control valve stored in the storage device. FIG. 5 is a diagram showing a part of the storage device,
Figure 6 is a flowchart showing the processing procedure of the CPU;
The figure is a longitudinal sectional view showing an embodiment of this invention. '6.
6A...Pressure control valve, 61...Input port, 62...
...Output port, 63...Relief port, 65.
・・Supply valve body, 66...IJ IJ-F valve body, 67・
...Shaft, 68...Pilot piston, 71
゜73...Spring, 74a...Pilot chamber,
74b...Feedback room, 75A, 75B...
Valve body operating protrusion, 79. 79A... Check φ piston, 79a... Pressure receiving part, 79b... Braking part, 80a
...pressurized chamber.

Claims (1)

[Claims for Utility Model Registration] A supply valve body that controls the flow of fluid between the output port and the input port, and a supply valve body that is arranged opposite to the supply valve body and that controls the flow of fluid between the output port and the relief port. A relief valve body that controls the flow, a shaft that slidably passes through both of the valve bodies, a spring that biases the supply valve body in the closing direction of the supply valve body, which is a direction from one end of the shaft to the other end, and a shaft. A spring that biases the relief valve element in the closing direction of the relief valve element, which is a direction from the other end to one end, is fixed to the shaft, and opens the relief valve element when the shaft moves in the direction of the closing force of the supply valve element. , a valve element operating member that opens the supply valve element when the shaft moves in the closing direction of the relief valve element, a pilot and piston fixed to the other end of the shaft, an output pressure feedback chamber and a pilot chamber defined by the pilot piston. , a check consisting of a brake part that is installed on an extension of the other end of the shaft and whose inner end projects into the pilot chamber, and a pressure receiving part whose outer end is fixed and whose outer diameter is larger than the diameter of the brake part. - A pressure control valve that is defined by a piston and a pressure-receiving portion and includes a pressurizing chamber for pressurizing the outer diameter end surface of the pressure-receiving portion.