Ultramicro-pressure self-operated pressure regulating valve

Abstract

The invention relates to the technical field of valve equipment, in particular to an ultramicro-pressure self-operated pressure regulating valve which comprises a valve front pipe, a valve rear pipe, a pushing module, a conical module and a cleaning mechanism, the upper end of the valve front pipe is fixedly connected with the valve rear pipe, and through holes are formed in the middle of the valve front pipe and the middle of the valve rear pipe; the through hole penetrates through the upper end of the valve front pipe and the lower end of the valve rear pipe, a filter screen is fixedly connected to the middle of the valve front pipe and located on one side of the through hole, a step sliding groove is formed in the right side of the filter screen, a pushing module and a conical module are slidably connected to the step sliding groove, the pushing module is located on the right side of the filter screen, and the conical module is located on the right side of the conical module. The conical module is located on the right side of the pushing module, a collecting cavity is fixed to one side of the right end of the valve front pipe, and a sealing ring is arranged on one side of the collecting cavity. By arranging the cleaning mechanism, the effect of automatically cleaning the filter screen is achieved, the situation that mesh holes of the filter screen are blocked by particle impurities and foreign matter in water after long-time work is prevented, and therefore the use efficiency of the device is improved.

Description

technical field [0001] The invention relates to the technical field of valve equipment, in particular to an ultra-micro-pressure self-operated pressure regulating valve. Background technique [0002] Self-operated pressure regulating valves are divided into three series of self-operated pressure, differential pressure and flow regulating valves. The self-operated pressure regulating valve is divided into two types: before the valve and after the valve according to the position of the pressure taking point. When the pressure taking point is in front of the valve, it is used to adjust the pressure before the valve to be constant; when the pressure taking point is behind the valve, it is used to adjust the pressure behind the valve to be constant. , when the pressure before and after the valve is introduced into both sides of the air chamber of the actuator, the self-operated differential pressure regulating valve can adjust the pressure at both ends of the regulating valve to ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an ultra-micro-pressure self-operated pressure regulating valve, which mainly solves the problem that the valve stem of the existing regulating valve will be stuck by foreign matter during operation, resulting in a decrease in the use efficiency of the device, and impurities inside the regulating valve Cannot effectively intercept and exclude

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