High-temperature-resisting and wear-resisting coal-to-liquid special valve

Abstract

The invention relates to the technical field of machines, in particular to a high-temperature-resisting and and wear-resisting coal-to-liquid special valve. The high-temperature-resisting and and wear-resisting coal-to-liquid special valve comprises a valve cover, a valve body, a support, a valve rod and a gate plate. Compared with the prior art, the high-temperature-resisting and and wear-resisting coal-to-liquid special valve has the characteristics that a structure of the coal-to-liquid special valve is designed, so that when the coal-to-liquid special valve is closed, adverse media of coal slurry, a catalyst and mineral waste residue cannot enter an upper cavity of the valve cover and the bottom of the valve body under the actions of a valve seat spring and a high-temperature butterfly spring; when the coal-to-liquid special valve is opened, the adverse media of coal slurry, the catalyst and the mineral waste residue are taken to a channel of the valve body along the gate plate and flow into a pipeline, and thus the cleanness of an inner cavity of the valve body is ensured. Therefore the coal-to-liquid special valve can be freely opened and closed and has the performances of preventing coking, preventing the structure from being eroded and resisting high temperature and wear.

Description

Technical field [0001] The invention relates to the technical field of machinery, in particular to a special high-temperature and wear-resistant coal-to-liquid valve. Background technique [0002] At present, under the working conditions of various harsh media such as coal slurry, catalyst, slag, etc., the valve that controls the opening and closing of the pipeline medium is the ordinary plate valve with diversion hole. [0003] See figure 1 , During the use of ordinary flat valve with diversion holes, coal slurry, catalyst, slag and other harsh media will enter the sealing surface and the upper cavity of the valve cover 1 and the inner cavity of the valve body 2. At low temperatures, coal slurry, catalyst, slag, etc. Various harsh media are prone to coking, jamming will occur when the valve is opened or closed, resulting in seal leakage, and deposits on the bottom of the valve body 2 make the valve unable to close. [0004] Therefore, it is necessary to design a high-temperature an...

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Problems solved by technology

[0003] see figure 1 , during the use of ordinary plate valves with diversion holes, various harsh media such as coal slurry, catalyst, slag, etc. will enter the sealing surface, the upper cavity of valve cover 1 and the inner cavity of valve body 2, and coal slurry, catalyst, slag, etc. Various harsh media are easy to coke, and jamming occurs when the valve is opened or closed, resulting in seal leakage. Sediment accumulates at the bottom of the valve body 2, making the valve unable to close

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