Novel coal scuttle

Abstract

The invention discloses a novel coal scuttle, and an inner wall of the coal scuttle is an integral curved surface obtained by rotating a contour line for a circle around a center line. The novel coal scuttle is characterized in that an upper end point of the contour line is a point on the inner edge of an outlet end of a raw coal bunker, a lower end point of the contour line is a point on the inner edge of an inlet end of a coal feeder, and the contour line is brachistochrone which passes between the upper end point and the lower end point. The brachistochrone is adopted as the contour line, so that the movement of coal granules on a wall surface is fastest, the wall friction and extrusion of raw coal and the inner wall of the coal scuttle are reduced, the adhering of the raw coal to the inner wall is reduced, and normal operation of an equipment system is guaranteed.

Description

technical field [0001] The invention relates to material storage equipment, in particular to a novel coal scuttle. Background technique [0002] In the production links of electric power, building materials, energy, chemical and other industries, steps such as storage and grinding of materials are often involved. For example, in the pulverizing system of a power plant, the raw coal stored in the raw coal bunker enters the coal feeder through the coal hopper, and then is transported by the coal feeder to the coal mill for grinding. Most of the existing coal hoppers are conical, connecting the upper coal bunker and the lower coal feeder. The raw coal moves from top to bottom in the coal scuttle. Due to the change of the cross-sectional area of ​​the coal scuttle, the movement speed gradually accelerates and passes through the entire coal scuttle smoothly. However, due to wall friction and extrusion, the raw coal near the wall moves slowly, and even adheres or fixes on the wa...

AI Technical Summary

Problems solved by technology

However, due to the friction and extrusion of the wall near the raw coal, the coal particles on the wall move slowly, and even adhere to or fix on the wall, which affects the flow of raw coal in the central part, and even causes the raw coal in the entire coal hopper to be blocked, forming a "blockage". "coal" and "broken coal", in severe cases, it will affect the normal operation of the equipment and even cause safety accidents

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