A ball valve for conveying coal-water slurry

Abstract

The invention discloses a ball valve for coal water slurry conveying. A through hole is formed in the upper portion of a ball body. An inner valve element body for forming an inner valve of the ball valve is arranged between a left valve body and a right valve body. The lower end of the inner valve element body is inserted into the through hole, and the upper end of the inner valve element body is fixedly connected with a handle. A valve rod with a thread is arranged on the upper portion of the inner valve element body. A check block and a disc-shaped second valve element are arranged on the middle portion and the lower portion of the inner valve element body respectively. The valve rod is connected to the upper side of the second valve element through the check block. The second valve element arranged on the valve rod of the ball valve is fully utilized, a valve element of the ball valve has the function of a gate plate, and the ball valve can be opened and closed quickly. Abrasion to the valve bodies of the ball valve is reduced, the ball valve for coal water slurry conveying has the dual opening and closing function, the hazards caused by leakage to the environment are reduced, and the service life of the ball valve is prolonged.

Description

technical field [0001] The invention relates to a ball valve, in particular to a ball valve used for conveying coal-water slurry. Background technique [0002] Coal water slurry is a new, efficient and clean coal-based fuel, and it is a new member of the fuel family. It is composed of 65%-70% coal with different particle size distribution, about 29-34% water and about 1% chemical additives made mixture. After many rigorous processes, impurities such as incombustible components in coal are screened out, and only the essence of carbon is retained, becoming the essence of coal water slurry. It has the same fluidity as oil, and its calorific value is half that of oil, so it is called a liquid coal product. Coal water slurry technology includes key technologies such as coal water slurry preparation, storage and transportation, combustion, and additives. It is a system technology involving multiple disciplines. Coal water slurry has the characteristics of high combustion efficie...

AI Technical Summary

Problems solved by technology

However, due to the difference in coal particle size, it will cause serious impact and wear to the ball valve during pipeline transportation, resulting in failure and leakage of the ball valve.

It is easy to cause the ball valve body to be severely worn or blocked, resulting in the inability of the ball valve to complete the adjustment function and normal opening and closing, resulting in the leakage of coal water slurry and increasing the transportation cost

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