Separator for coal mill

Abstract

The invention disclose a separator of a coal mill which includes a motor, an inner cone, an outer cone and a cover body; the cone ends of the inner cone and the outer cone face to the lower side; the inner cone is arranged in the outer cone; the cover body is covered on the outer cone; static vanes are arranged between the upper side of the upper edge of the inner cone and the cover body; the static vanes are longitudinally arranged and arranged in a circle along the upper edge of the inner cone; the insides of the static vanes surrounded in a circle are provided with rotary impellers which are driven by the motor; the axes of the rotary impeller, the inner cone and the outer cone are concurrent; the upper sides of the rotary impellers are provided with discharge openings. In the invention, the accuracy during the separation of grains can be greatly improved by arranging the rotary impellers inside the static vanes; besides, the adjusting performance is good; the grains of the coal powder are uniform; the powder selecting efficiency is greatly improved as well.

Description

technical field [0001] The invention relates to a separator of a coal mill. Background technique [0002] Now, with the growth of energy demand, some power plants are demanding more and more pulverized coal. Coal powder needs to be obtained by grinding coal with a coal mill. Generally speaking, power plants have requirements for the particle size of pulverized coal. In the coal pulverizer, there is an important part, namely the separator. After the coal is ground, particles of varying sizes are blown up by the air stream and passed through the separator. The function of the separator is to separate the qualified particles from the oversized particles, so that the oversized particles are re-ground, while the qualified particles are discharged from the coal mill. [0003] At present, the separators used in the pulverized coal pulverization system are all static separators, which can adjust the speed and direction of movement of pulverized coal particles through the opening...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a coal mill separator, so that the coal mill has better accuracy when separating particles, and can overcome the coal fineness of the existing coal mill separator. The adjustment effect is not obvious, the adjustment performance is poor, the pulverized coal particles are uneven, and the powder selection efficiency is low.

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