A multifunctional butterfly valve

Abstract

A multifunctional butterfly valve, comprising a pipe fitting, a butterfly valve assembly and a filter assembly arranged on the pipe fitting, and a drive assembly; the pipe fitting is provided with a passage for fluid to pass through; the butterfly valve assembly includes a rotating shaft and a valve plate, and the rotating shaft The valve plate is driven to rotate, the valve plate is placed in the passage, the outer end of the rotating shaft acts on the drive assembly; the outer periphery of the valve plate is provided with a sealing ring and a positioning hole, and the butterfly valve assembly also A positioning column is included. When the valve plate is closed, the positioning column can be inserted into the positioning hole after passing through the pipe wall of the pipe fitting. The invention provides a multifunctional butterfly valve, which has a filtering function and can remove filter residue during the opening and closing process of the valve plate to ensure smooth pipeline. And the degree of automation is high, two sets of operations can be performed by one motor.

Description

technical field [0001] The invention belongs to the field of industrial valves, in particular to a multifunctional butterfly valve. Background technique [0002] In the industrial field, especially in the field of pipeline medium transportation, industrial valves are widely used. Among them, butterfly valves are widely used in fluid conveying pipeline systems. Butterfly valve, also known as flap valve, is a valve that uses disc-type opening and closing parts to turn back and forth from 0 to 90° to realize closing, opening and regulating flow. It is widely used in industrial fields. [0003] During the use of the butterfly valve, its sealing performance is very critical. The current butterfly valve mainly relies on the close fit between the outer periphery of the valve plate and the inner wall of the valve to achieve sealing. Abrasion leads to a decrease in sealing performance. If it is not discovered and repaired in time, fluid leakage will occur, especially for some toxic...

AI Technical Summary

Problems solved by technology

[0003] During the use of the butterfly valve, its sealing performance is very critical. The current butterfly valve mainly relies on the close fit between the outer periphery of the valve plate and the inner wall of the valve to achieve sealing. Abrasion leads to a decrease in sealing performance. If it is not discovered and repaired in time, fluid leakage will occur, especially for some toxic and harmful fluids, which will cause environmental pollution.

In addition, during the use of the butterfly valve, the fluid in its flow channel sometimes contains some solid components or impurities, which need to be filtered, and there is no good filtering structure in the prior art

[0004] Most of the current butterfly valves require workers to manually open and close the butterfly valve. For example, manually turning the disc or valve stem is laborious, especially when the butterfly valve port is blocked or the flow path is very viscous. , more force is required, and it is very easy to use excessive force at this time, causing the butterfly valve to open too much at once, causing accidents

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