Ball valve capable of eliminating cavitation

Abstract

The invention provides a ball valve capable of eliminating cavitation and relates to the field of pipeline control valves. The problem that valve internals of an existing ball valve are damaged due to the cavitation phenomenon is solved. The ball valve capable of eliminating cavitation comprises a first valve body part, a second valve body part, a valve rod, a ball body, valve seats, springs and a fixing shaft and further comprises a spherical surface wall plate provided with through holes. An outlet runner of the ball body is covered by part of the spherical surface wall plate. The ball valve capable of eliminating cavitation can effectively eliminate cavitation when the opening degree is small, and can meet the requirement of the valve for higher flow when the opening degree is large and the cavitation phenomenon is unobvious, in addition, the structure is simple, machining is convenient, assembly is facilitated, and the ball valve has the characteristics of being capable of saving energy and efficient.

Description

technical field [0001] The invention relates to the field of pipeline control valves, in particular to a ball valve for eliminating cavitation. Background technique [0002] Ball valves are widely used in coal chemical, petrochemical, iron and steel, metallurgy and air separation industries due to their advantages such as small fluid resistance, large flow capacity, fast switching, good sealing performance, long life, and convenient air and electric control. [0003] However, the ball valve has the characteristics of large flow capacity and rapid switching. Especially during the opening and closing process of the valve, when the pressure difference on both sides of the valve is large, the flow rate of the fluid medium will be high, and cavitation is prone to occur. When the high speed passes through the flow channel of the ball valve, due to the decrease of the pressure of the liquid fluid, the gas is precipitated to generate bubbles. When the pressure of the bubbles reaches...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of damage to the internal parts of the valve caused by cavitation in the existing ball valve, the present invention provides a ball valve that eliminates cavitation, which can not only prevent cavitation, eliminate noise and vibration, but also reduce the energy consumption of the valve and improve the performance of the valve. The working environment of the operator can effectively eliminate cavitation when the opening is small, and can meet the greater flow requirements of the valve when the cavitation is not obvious when the opening is large, and the structure is simple, easy to process, easy to assemble, and energy-saving. Efficient features

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