Cleaning device for wall-mounted fire coal in raw coal bunker

Abstract

The invention discloses a cleaning device for wall-mounted fire coal in a raw coal bunker, and belongs to the field of furnace coal cleaning. The cleaning device comprises a cleaning mechanism which is located in the raw coal bunker in use and used for cleaning raw coal, the cleaning mechanism is hinged to the power output end of a hoisting mechanism through a telescopic rod, and the hoisting mechanism is fixedly arranged on a supporting mechanism; and the cleaning device further comprises an external control mechanism used for providing control, and the control signal output end of the control mechanism controls the vertical position and rotation of the cleaning mechanism through a pipeline. The cleaning device is high in maneuverability, movable and convenient to assemble and disassemble, the problem that coal cannot be discharged from the upper portion of a coal feeder of a power plant can be solved, and long-term stable operation of a unit is facilitated. The cleaning device is suitable for cleaning the raw coal bunker of the coal feeder.

Description

technical field [0001] The invention belongs to the field of furnace coal cleaning, and relates to a cleaning device for a raw coal bunker, in particular to a cleaning device for burning coal hanging on a wall in a raw coal bunker. Background technique [0002] The coal feeder is a raw coal transportation device, which can transport the raw coal evenly and continuously to the coal mill or boiler according to a certain flow rate, and is used in the thermal power plant boiler to burn coal to generate electricity. In the prior art, an inlet standpipe is installed behind the inlet of the coal feeder, and the raw coal enters the coal feeder through the inlet standpipe. However, when the moisture and viscosity of the coal entering the furnace are large, the fuel in the raw coal bunker above the coal feeder is easy to be stained. The wall is blocked, and in the worst case, more than half of the coal feeder inlets cannot discharge coal, and it is difficult for the unit to carry the ...

AI Technical Summary

Problems solved by technology

In the prior art, an inlet standpipe is installed behind the inlet of the coal feeder, and the raw coal enters the coal feeder through the inlet standpipe. However, when the moisture and viscosity of the coal entering the furnace are large, the fuel in the raw coal bunker above the coal feeder is easy to be stained. The wall is clogged, and in the worst case, more than half of the coal feeder inlets cannot discharge coal, and it is difficult for the unit to carry the load, and it is even forced to stop

[0003] In the prior art, after the coal feeder inlet standpipe is blocked, manual dredging is generally used, and a number of dredging personnel are added to repeatedly beat the coal feeder inlet standpipe with a sledgehammer, and the blocked raw coal continues to flow through vibration. Although the method has a certain effect, due to the large amount of raw coal being shaken off during the pipeline dredging process, not only the normal coal supply cannot be guaranteed, but also seriously affects the stability of the boiler combustion and the safe operation of the unit, and at the same time causes waste of human resources and equipment damage

[0004] Another way to deal with blockage is: add a central feeder or a rotary scraper machine, and use the central feeder or rotary scraper machine to scrape off the fuel on the inner wall of the raw coal bunker, but this method can only solve the problem at the entrance of the coal feeder. Coal blocking can not solve the problem of wall-hanging and bridging in the upper part of the coal-fired coal in the raw coal bunker, and there are still defects that seriously affect the stability of boiler combustion and the safe operation of the unit, and at the same time cause waste of human resources and equipment damage.

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