Double-seal piston type flow and pressure regulating valve

Abstract

The invention discloses a double-seal piston type flow and pressure regulating valve which comprises a valve body, wherein a liquid inlet and a liquid outlet are formed in two ends of the valve body respectively, upper arc-shaped flow guide plates are symmetrically arranged at the top of the inner wall of the valve body, a fixed base is fixedly arranged at the center of the bottom of the inner wall of the valve body, lower arc-shaped flow guide plates are arranged on two sides of the fixed base, openings are formed between the upper arc-shaped flow guide plates and the lower arc-shaped flow guide plates, adjusting sealing devices are arranged on the openings and comprise connecting cylinders, threaded holes are formed in the connecting cylinders, threaded rods are arranged in the threaded holes in a penetrating mode, the bottom end of the threaded rod is connected with a sealing block through a bearing sleeve, the sealing block is matched with the opening, and a fixing plate is fixedly arranged in the connecting cylinder. The device has the beneficial effects that the device is simple in structure and convenient to use, the water pressure can be adjusted from two sides respectively, the sealing effect is good, and when any one goes wrong, the other one can still work.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a double-seal piston type flow regulating and pressure regulating valve. Background technique [0002] Valves are devices used to control the direction, pressure, and flow of fluids in fluid systems; valves are control components in pipeline fluid delivery systems, and valves can be used to control air, water, steam, various corrosive media, mud, oil, etc. It is used to change the cross section of the channel and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow and pressure relief; the valve used for fluid control, From the simplest cut-off valve to various valves used in extremely complex automatic control systems, there are many varieties and specifications. [0003] The current flow regulating and pressure regulating valves often have problems such as unstable operation, noise, vibration, cavitation, and se...

AI Technical Summary

Problems solved by technology

[0003] The current flow regulating and pressure regulating valves often have problems such as unstable operation, noise, vibration, cavitation, and serious damage to the sealing position during operation, and the existing flow regulating and pressure regulating valves all adopt a single-seal structure. As a result, once there is a problem with the sealing structure, the valve will inevitably be unusable, which will affect people's life, production, etc.

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