Anti-sediment butterfly valve

Abstract

The invention provides an anti-sediment butterfly valve that can prevent sediment from entering the shaft sleeve, has excellent protection levels, can reduce risks, provide multiple protections, prolong the service life of the butterfly valve, and reduce maintenance or replacement costs, including the anti-sediment butterfly valve with fluid channels. The valve body, the valve seat arranged on the inner wall of the fluid passage, the butterfly plate that is rotatably arranged in the valve seat and can be used to seal the fluid passage, and the rotation that cooperates with the butterfly plate is arranged on the transmission of the valve body The valve stem in the end, and the bushing used to connect the valve body and the valve stem are arranged in the drive end of the valve body, and a medium clearance groove is formed between the valve stem and the valve seat, and the valve Between the rod and the valve body, a first matching clearance groove is formed on the side of the shaft sleeve close to the medium clearance groove, and a second matching clearance groove is formed on the side of the shaft sleeve away from the medium clearance groove.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an anti-sediment butterfly valve. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. A valve is a device that makes or stops the flow of media (liquid, gas, powder) in piping and equipment and controls its flow. Specifically, it can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. The valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cut-off, throttling, check, diversion or overflow relief. [0003] Butterfly valve, also known as flap valve, is a regulating valve with simple structure, which can be used for switch control of low-pressure pipeline medium. of a valve. ...

AI Technical Summary

Problems solved by technology

[0004] During the use of the butterfly valve, there is inevitably a certain amount of sand in the fluid. When the butterfly valve is opened and closed, the sand easily enters the shaft sleeve from the medium gap groove between the valve seat and the valve stem. After a large amount of sand enters, it will This causes the valve stem and the shaft sleeve to be worn or even stuck, which is not conducive to the use of the butterfly valve. The protection level to prevent sediment from entering the shaft sleeve is poor, which cannot reduce the risk and provide multiple protections. The service life of the butterfly valve is short and requires maintenance. or costly to replace

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