A high-temperature and wear-resistant coal-to-oil special valve

Abstract

The invention relates to the field of a mechanical technology, in particular to a high temperature and wear resistant coal-to-liquid special valve. The valve comprises a valve cover, a valve body, a support, a valve rod and a gate plate. Compared with the prior art, the structure of the coal-to-liquid special valve is designed so that adverse mediums including coal slurry, a catalyst and slags can not enter the upper cavity of the valve cover and the bottom of the valve body under the influence of a valve seat spring and a high temperature belleville spring, when the coal-to-liquid special valve is closed; the adverse mediums including the coal slurry, the catalyst and the slags are taken into a valve body channel and flow into a pipeline along the gate plate so as to guarantee the cleaning of the inner cavity of the valve body, when the coal-to-liquid special valve is opened. Therefore, the coal-to-liquid special valve can be freely opened and closed, and has coking prevention and erosion prevention structures, high temperature resistance and wear resistance.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to a high-temperature and wear-resistant coal-to-oil special valve. Background technique [0002] At present, under the working conditions of various harsh media such as coal slurry, catalyst, and slag, the valve that controls the opening and closing of the pipeline medium is an ordinary plate valve with diversion holes. [0003] see figure 1 , during the use of ordinary plate valves with diversion holes, various harsh media such as coal slurry, catalyst, and slag will enter the sealing surface, 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. All kinds of 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. [0004] Therefore, it is necessary to ...

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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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