High-efficiency cyclone type coarse powder separator

Abstract

The invention relates to the technical field of pulverized coal processing, and discloses a high-efficiency cyclone type coarse powder separator. The high-efficiency cyclone type coarse powder separator comprises an outer cone, a powder inlet pipe, a powder return pipe and an inner cone. By designing a partition plate, a sliding rod, a large baffle, a small baffle, a large air bag and a small air bag, ascending airflow in the outer cone is separated through the partition plate, pulverized coal coarse particles separated in the inner cone are accumulated on the large baffle and the small baffle, meanwhile the gravity of accumulated pulverized coal promotes the large baffle to slide up and down on the sliding rod and extrudes the large air bag, gas in the large air bag is extruded into the small air bag, the volume of the small air bag is expanded, the small air bag is promoted to push the small baffle to act on a torsion spring and rotate around the large baffle under the connection of a hinge, the bottom of the inner cone is opened, and the pulverized coal coarse particles accumulated in the inner cone are released, the coarse pulverized coal particles are prevented from being secondarily brought into the inner cone by the ascending air flow during falling, meanwhile, fine pulverized coal in the ascending air flow is prevented from being impacted by the coarse pulverized coal particles during falling.

Description

technical field [0001] The invention relates to the technical field of coal powder processing, in particular to a high-efficiency cyclone type coarse powder separator. Background technique [0002] Coarse powder separator is widely used in power plants. Its main function is to separate the coarse coal powder from the gas-powder mixture coming out of the coal mill, and then the fine coal powder enters the next processing link and is separated The coarse coal powder is recycled to the coal mill for re-grinding. [0003] The existing coarse powder separator mainly separates coal powder through centrifugal force, and the air lock on the inner cone impacts and separates the coarse coal powder in the airflow, and the coarse particles brought into the inner cone by the airflow The pulverized coal will fall on the gas locker by colliding with the inner wall of the inner cone, and finally the accumulation of pulverized coal is greater than the weight of the weight connected to the g...

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Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing coarse powder separator proposed in the background technology, the present invention provides a high-efficiency cyclone type coarse powder separator , has the advantages of preventing the coarse coal powder from being brought into the inner cone twice, preventing the coarse coal powder from impacting the fine coal powder in the airflow when the coarse coal powder falls, and solving the technical problems raised in the above-mentioned background technology

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