Noise-reduction ball valve

Abstract

The invention discloses a noise-reduction ball valve. A floating ball valve structure of the ball valve comprises a valve body comprising a first valve body part and a second valve body part; the valve body comprises a ball body; an inlet valve seat is arranged on one side of the ball body; springs are arranged on the inlet valve seat; an outlet valve seat is arranged on the other side of the ballbody; the ball body and the outlet valve seat form a spherical seal; a valve rod drives the ball body to rotate to complete opening and closing actions; when the noise-reduction ball valve is in theclosed state, under the effect of medium pressure, the ball body shifts and closely presses against the outlet valve seat, and the spherical seal is formed; an inner piece is arranged in a flow channel of the ball body and comprises at least two side plates, at least two end plates and at least two supporting plates; through holes are formed in the side plates and the end plates; and a channel isformed in the inlet spherical surface of the ball body. By the aid of the ball valve, noise and vibration can be eliminated substantially, meanwhile, cavitation can be prevented, the energy consumption of the valve is reduced, the working environment of an operator is improved, and the valve adopts the simple structure, is convenient to machine and assemble and has the characteristics of capability of saving energy and high efficiency.

Description

technical field [0001] The invention relates to the technical field of pipeline control valves, in particular to a noise reduction ball valve. Background technique [0002] At present, ball valves are widely used in coal chemical, petrochemical, 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 convenience for air control and electric control. [0003] Existing ball valves have the characteristics of large flow capacity and rapid switching, which easily cause the problems of high noise and strong vibration during the opening and closing process of the ball valve, especially under the working condition of high pressure difference. This is because during the opening and closing process of the ball valve, the pressure difference on both sides of the valve is very large, and the fluid velocity is very high. At the same time, the high noise and stro...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a noise-reducing ball valve to solve the problem of the opening and closing process, especially under the condition of high pressure difference. When passing through the flow channel of the ball valve, turbulence, flashing and cavitation will be generated, causing wear and damage to the valve body and the ball, resulting in high noise and strong vibration and energy loss of the valve, which will bring great harm to the health of operators.

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