Coal accumulation cleaning device, coal feeder and coal feeder coal drop port anti-blocking method

Abstract

The invention relates to the technical field of coal feeders, and discloses a coal accumulation cleaning device, a coal feeder and a method for preventing blocking of a coal drop opening of the coal feeder. Wherein, the coal accumulation cleaning device includes a coal accumulation alarm detection mechanism and a coal accumulation cleaning mechanism; the coal accumulation alarm detection mechanism includes a baffle, a connecting rod and a limit switch; one end of the connecting rod is connected to the baffle , the other end is connected to the limit switch, so that the baffle and the limit switch can be linked; when the displacement generated by the baffle reaches the set threshold, the limit switch is triggered; the The coal accumulation cleaning mechanism includes a connecting rod, an operating handle and a scraper adapted to the shape of the side wall of the coal discharge port. One end of the connecting rod is connected to the scraper, and the other end is connected to the operating handle. By applying the coal deposit cleaning device of the present invention, the coal discharge port can be cleaned and dredged without shutting down the coal feeder or the corresponding whole system.

Description

technical field [0001] The invention relates to the technical field of coal feeders, in particular to a coal deposit cleaning device, a coal feeder and a method for preventing blockage of a coal drop port of the coal feeder. Background technique [0002] The coal feeder is one of the main equipments in the pulverizing system of the coal-fired power plant. It is a kind of equipment that transports the raw coal to the coal mill uniformly and continuously according to a certain flow. The water content of the coal entering the coal feeder from the coal bunker increases, and the cohesion improves. After the coal is weighed by the coal feeder belt, it is easy to stick to the pipe wall of the coal drop port 30 in the coal drop port area of ​​the coal feeder. on (eg figure 1 shown), and the amount of bonded coal increases gradually, causing the coal drop port of the coal feeder to be blocked, and the method of cleaning up the coal bonded on the pipe wall of the coal drop port of th...

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Problems solved by technology

[0002] The coal feeder is one of the main equipment in the pulverizing system of the coal-fired power plant. It is a kind of equipment that transports the raw coal to the coal mill evenly and continuously according to a certain flow rate. Affected by the rainy season, the raw coal is wet, so that from The moisture content in the coal entering the coal feeder from the coal bunker increases, and the cohesiveness increases. After the coal is weighed by the belt of the coal feeder, it is easy to stick to the pipe wall of the coal feeder 30 in the area of ​​the coal feeder. on (eg figure 1 As shown), and the amount of bonded coal gradually increases, causing the coal feeder's coal drop port to be blocked, and the method of cleaning the coal stuck on the wall of the coal feeder's coal drop port can only be out of service The entire system can be cleaned only after the hot and cold dampers of the system are isolated, which will cause the load limit problem of the generator set

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