Ceramic wedge-type double-gate valves

Abstract

The invention relates to a ceramic hard sealing valve, comprising a valve rail and a valve plate. The ceramic hard sealing valve is characterized in that the contact position between the valve rail and the valve plate is provided with a ceramic sealing ring, wherein, the valve plate comprises a main valve plate and an auxiliary valve plate; the main valve plate is parallel and the auxiliary valve plate is wedge shape; the ceramic sealing rings which are arranged at the contact position between the valve rail and the valve plate can have the quantity of 4 according to the structure of the main valve plate surface and the auxiliary valve plate surface; according to the characteristic that the hardness of the ceramic is only second to the hardness of diamond in the nature, the valve is prepared as the ceramic sealing valve, thus achieving the effects of wearability, anti-corrosion, anti-scaling, high temperature resistance and long service life; the valve is economical and practical and can ensure the continuous and normal operation of the workshops. Under working conditions, owning to the wedge-shaped structure of the auxiliary valve plate which has inclined angle, the problems such as sealing performance reduction and plate-blocking and the like of the valve are solved, and the service life of the valve plate is prolonged.

Description

technical field [0001] The invention relates to a ceramic wedge valve, in particular to a ceramic wedge double gate valve used in power plants, aluminum plants, molybdenum mines, etc. to transport media such as slurry and slag. Background technique [0002] At present, in the working process of metal mines such as power plants, aluminum plants, molybdenum mines, and tungsten mines, the valves used to transport slurry, slag and other medium systems are mostly made of metal, which has low wear resistance and corrosion resistance, thereby reducing The service life of the valve plate is shortened, maintenance and replacement are frequent, and most of the valves have a parallel gate structure. It is easy to form scaling on the surface of the valve plate during the lifting and lowering of the valve stem, resulting in problems such as reduced valve sealing performance and jamming. It has a certain impact on the continuous normal operation of its production. Contents of the invent...

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Problems solved by technology

[0002] At present, in the working process of metal mines such as power plants, aluminum plants, molybdenum mines, and tungsten mines, the valves used to transport slurry, slag and other medium systems are mostly made of metal, which has low wear resistance and corrosion resistance, thereby reducing The service life of the valve plate is shortened, maintenance and replacement are frequent, and most of the valves have a parallel gate structure. It is easy to form scaling on the surface of the valve plate during the lifting and lowering of the valve stem, resulting in problems such as reduced valve sealing performance and jamming. have a certain impact on the continuous normal operation of its production

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