Magnetic attraction type rotary dust cover for observation window of coal feeder

Abstract

The invention discloses a magnetic attraction type rotary dust cover for an observation window of a coal feeder. The magnetic attraction type rotary dust cover relates to the technical field of coal fuel supply equipment, and comprises a rotary control device, a rotary dust cover body and magnets, wherein the magnets are arranged on the rotary control device and the rotary dust cover respectively,and the rotary control device and the rotary dust cover are in magnetic attraction connection with each other under the action of the magnets. The magnetic attraction type rotary dust cover has the advantages of simple structure and novel style, controls the rotary dust cover arranged in a coal conveying pipe by skillfully utilizing a magnetic traction force through glass of the observation window so as to relieve the condition of frequent coal adhesion on the inner surface of the observation window, facilitates the staff to perform the real-time monitoring of operating condition in a coal dropping pipe, greatly improves the working efficiency, further ensuring normal operation of the coal dropping pipe, reduces the occurrence of alarm and non-stop accidents caused by incapability of observing the operating condition of the coal dropping pipe, is efficient and convenient, is convenient to operate, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to the technical field of coal fuel supply equipment, in particular to a magnetic suction rotating dust cover for an observation window of a coal feeder. Background technique [0002] In thermal power plants, the coal feeder is the main equipment for fuel supply in coal-fired power plants. Once the coal feeder cannot be used normally, it will cause the coal in the furnace to be unable to be transported to the coal mill, which will affect the stable operation of the unit. If the coal feeder The observation window cannot accurately and timely observe the coal falling of the coal feeder, which will cause the coal feeder to be unusable due to coal blockage and coal sticking, and the coal entering the furnace cannot be transported to the coal mill. Insufficient combustion may cause the boiler to break coal and trigger the main fuel trip of the boiler. Therefore, whether the coal feeder can work normally is very important for the safe a...

AI Technical Summary

Problems solved by technology

[0002] In thermal power plants, the coal feeder is the main equipment for fuel supply in coal-fired power plants. Once the coal feeder cannot be used normally, it will cause the coal in the furnace to be unable to be transported to the coal mill, which will affect the stable operation of the unit. If the coal feeder The observation window cannot accurately and timely observe the coal falling of the coal feeder, which will cause the coal feeder to be unusable due to coal blockage and coal sticking, and the coal entering the furnace cannot be transported to the coal mill. Insufficient combustion may cause the boiler to break coal and trigger the main fuel trip of the boiler. Therefore, whether the coal feeder can work normally is very important for the safe and stable operation of the unit

In the actual work, it was found that the reason for the sticky coal in the observation window of the coal feeder is that when the coal feeder is in normal operation or when the coal is cut off, the primary air in the coal mill returns to the coal feeder along with the coal powder, so that the coal feeder Coal powder sticks to the observation window of the coal feeder; the operation of the coal drop pipe cannot be observed after the coal feeder observation window sticks to the coal feeder, and the coal drop pipe will be blocked after a long time of sticking to the coal feeder, which makes the coal feeder unusable. It takes a long time to clear the blocked coal feeder pipe, and the coal cannot be transported to the coal mill normally, which will easily cause the boiler to break the coal, which will cause the main fuel of the boiler to trip

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