Mechanical drive control type flow regulating valve

Abstract

The invention discloses a mechanical drive control type flow regulating valve which comprises a pressure control cavity, a valve seat, a regulating system, a piston and a flow limiting plate, wherein the regulating system comprises a regulating seat, a screw plug and a rectangular spring, and the screw plug and the rectangular spring are arranged in the regulating seat; the piston is arranged in the pressure control cavity in a sliding mode, a flow limiting channel is formed in the valve seat, sliding ways are arranged on the two sides, which correspond to the flow limiting plate, of the valve seat, the flow limiting plate is arranged in the flow limiting channel in a sliding and penetrating mode, the two ends of the flow limiting plate are connected with the sliding ways in a sliding mode, the flow limiting plate is used for controlling the through-flow section area of the flow limiting channel, and a throttling opening is formed between an upper flange of the flow limiting plate and the valve seat; one end of the flow limiting plate extends into the pressure control cavity and is connected with the piston, and the other end of the flow limiting plate extends into the regulating seat and is connected with the screw plug through the rectangular spring; and the pressure control cavity is connected with an air source. The through-flow cross section area is regulated in real time, the flow passing through the valve body can be effectively regulated in time, and good practicability is achieved.

Description

technical field [0001] The invention belongs to the technical field of flow regulating valves, and in particular relates to a mechanically driven and controlled flow regulating valve. Background technique [0002] At present, most of the flow control valves used in China are grading and quantitative adjustment, and the movement of the valve core is mostly controlled by a solenoid valve. The finer the adjustment range, the more complicated the electromagnetic design, and the more complicated the solenoid valve control program. And installing the solenoid valve requires a larger space size, thereby increasing the size and weight of the control valve body. In order to achieve the purpose of automatic control, it is also necessary to increase various sensors, which not only increases the manufacturing cost of the solenoid valve, but also increases the probability of failure with the increase in the number of electronic components used, which increases the maintenance probability...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the flow control valves used in China are grading and quantitative adjustment, and the movement of the valve core is mostly controlled by a solenoid valve. The finer the adjustment range, the more complicated the electromagnetic design, and the more complicated the solenoid valve control program.

And the installation of the solenoid valve requires a larger space size, thereby increasing the size and weight of the control valve body

In order to achieve the purpose of automatic control, it is also necessary to increase various sensors, which not only increases the manufacturing cost of the solenoid valve, but also increases the probability of failure with the increase in the number of electronic components used, which increases the maintenance probability of the system, and cannot meet the requirements of harsh conditions. Use requirements under working conditions

The use of common control valves has high limitations, high manufacturing and maintenance costs, and the service life and working efficiency under severe working conditions cannot be guaranteed.

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