Automatic pebble coal slag discharging and collecting system of coal mill

Abstract

The invention discloses an automatic pebble coal slag discharging and collecting system of a coal mill, and relates to the technical field of pebble coal collecting devices. The automatic pebble coalslag discharging and collecting system comprises a coal hopper, and an automatic collecting structure is arranged on the coal hopper. The automatic collecting structure mainly comprises a first movable baffle, a coal dropping pipe, a second movable baffle, a purging air duct, a cold air purging structure, a collecting box and a plurality of spraying heads identical in structure. The first movablebaffle is movably mounted at one end of the coal hopper, and the coal dropping pipe is mounted at one end of the coal hopper. The second movable baffle is movably mounted at one end of the coal dropping pipe, and the purging air duct is mounted at one end of the coal dropping pipe. The cold air purging structure is mounted at one end of the purging air duct, and the collecting box is mounted at the other end of the purging air duct. The automatic pebble coal slag discharging and collecting system is simple in structure, convenient to mount and use, extremely low in maintenance cost, easy to maintain and low in failure rate, the spontaneous combustion probability of pebble coal is reduced, and safety operation of a coal pulverizing system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of pebble coal collection devices, in particular to a coal mill pebble coal automatic slag discharge collection system. Background technique [0002] At present, in most thermal power plants, coal is generally used as the raw material for power generation. Before coal enters the boiler for combustion, it must be pulverized by a coal mill, so that the fineness of coal powder entering the boiler can be controlled within a more economical range. In order to achieve the best combustion effect. With the continuous rise of coal prices, in order to reduce production costs, many thermal power plants use low-quality coal for combustion, resulting in an increase in the amount of pebble coal in the coal mill. In the existing pulverizing system, most power plants adopt a buffer box type on-site slag discharge system, and the slag discharge method is on-site discharge and manual removal. Pebble coal generally has a rel...

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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an automatic slag discharge collection system for pulverized coal, which solves the problem that in the existing pulverizing system, most power plants adopt a buffer box type slag discharge system on the spot, and its slag discharge method For in-situ discharge, manual removal

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