Wear-free anti-erosion clutch valve

Abstract

The invention discloses a wear-free anti-erosion clutch valve. The wear-free anti-erosion clutch valve comprises a valve body, a rotating valve element and a valve rod, wherein the valve body is provided with an input port and an output port, the rotating valve element is provided with a channel, and an input sealing surface and an output sealing surface are formed on one side of the channel; thevalve rod is connected with the rotating valve element to rotate and switch, wherein rotating opening and closing angles opened or closed non-simultaneously are formed between the input sealing surface and the output sealing surface, and the input port and the output port are sequentially closed / opened in a staggered mode when rotation is carried out. According to the wear-free anti-erosion clutchvalve, the service life is long, opening / closing torque is small, the flow resistance coefficient is small, the energy-saving effect is good, the manufacture, installation and maintenance are convenient, and the damage problem of abrasion (or scratch) and erosion (such as scouring and cavitation) of the valve is solved.

Description

technical field [0001] The invention relates to a valve, more specifically, to a wear-free and anti-erosion clutch valve. Background technique [0002] Service life is an important technical indicator of valve quality. The sealing performance of the sealing pair (valve body and opening and closing parts) determines the service life of the valve. The wear (abrasion) and erosion of the sealing pair are the main forms of damage to the sealing performance. Looking at the shut-off valves used in fluid engineering today, no wear-resistant, anti-erosion, and small operating torque valves have been found. [0003] Problems existing in the valve at present: 1. Wear of the sealing pair. The current valves, such as gate valves, ball valves, etc., due to the relative movement of the sealing pair, inevitably wear and tear during the opening or closing process, and serious abrasions (even small ones) scratches) will cause the valve to lose its sealing performance and need to be replace...

AI Technical Summary

Problems solved by technology

[0003] Problems existing in the valve at present: 1. Wear of the sealing pair. The current valves, such as gate valves, ball valves, etc., due to the relative movement of the sealing pair, inevitably wear and tear during the opening or closing process, and serious abrasions (even small ones) scratches) will cause the valve to lose its sealing performance and need to be replaced or repaired

[0004] 2. The erosion of the sealing pair, when the valve is opened or closed, the sealing pair forms a small gap. At this time, the flow rate is high, which will cause erosion and cavitation damage to the sealing pair, especially when there is a high pressure difference and there will be hard particles in the fluid. Directly impact the sealing Parts, or cavitation caused by partial vaporization of liquid medium and impact of gas-liquid blasting

[0005] 3. The problem of operating torque. The operating torque of the general valve opening / closing is very large. Sometimes it is necessary to lengthen the wrench, or rely on external force, such as worm gear, pneumatic, electric device

[0011] Such methods have failed to solve the problem fundamentally.

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