Long-life adjusting valve

Abstract

The invention discloses a long-life adjusting valve. The valve comprises a valve body, a liquid inlet hole is formed at the lower end of the valve body, a liquid outlet hole is formed in the side face of the valve body, a valve cavity with an opening at the upper end is formed in the valve body, a valve port is formed at the bottom of the valve cavity, a first communicating hole is formed in the side wall of the valve cavity, and a valve clack support is fixedly arranged at the bottom of the valve cavity; and a static valve plate is arranged in the valve clack support, and a plug is fixedly arranged at the upper end of the valve cavity. A lower valve rod is rotationally connected into the plug, a convex shoulder is arranged at the outer side of the lower valve rod, a convex rod is arranged in the center of the convex shoulder, a movable valve plate is arranged at the position, located at the lower end of the convex rod, in a mounting hole, a limiting groove is formed at the upper end of the movable valve plate, and a limiting block is arranged at the lower end of the convex rod; gaps are reserved between the lower end of the convex rod and the movable valve plate and between the limiting block and the bottom of the limiting groove; a valve control assembly is arranged in the valve body; and the long-service-life adjusting valve is simple in structure, and friction between the movable valve plate and the static valve plate is small.

Description

technical field [0001] The invention relates to the field of valves, in particular to a long-life regulating valve. Background technique [0002] In the automatic adjustment system of the production process, the control valve is an important and indispensable link. It is called the "hands and feet" of the automation of the production process and is one of the terminal control components of the automatic control system. It is composed of two parts, the actuator and the valve. From a hydraulic point of view, the regulating valve is a throttling element whose local resistance can be changed. The regulating valve changes the resistance coefficient by changing the stroke according to the input signal, so as to achieve the purpose of regulating the flow. Except for the angle-shaped valve body, the structure of other angle-shaped regulating valves is similar to that of single-seat valves. Its characteristics determine that its flow path is simple and the resistance is small. The ...

AI Technical Summary

Problems solved by technology

The angle valve is similar to the ball valve, its structure and characteristics are modified by the ball valve, the difference from the ball valve is that the outlet of the angle valve is at a right angle to the inlet, so the angle valve is also called a triangle valve, an angle valve, and an angle water valve , the angle valve is to turn the handle 90 degrees to switch the two states of complete closure or complete conduction. The existing angle valve disc device is composed of a moving piece and a static piece. The moving piece and the static piece are made of ceramics. The moving piece and the static piece are provided with a channel for passing water. During the use of the angle valve, due to the large pressure difference between the inlet and the outlet, the moving piece and the static piece are closely fitted, so that the angle valve can be used for a long time. During the opening and closing process of the time, the friction between the moving piece and the static piece is more likely to cause wear, resulting in a gap between the moving piece and the static piece, which is prone to liquid leakage and affects the service life of the angle valve.

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