Rotary and sliding fire grate air conditioner of chain

Abstract

The invention relates to a rotary push-pull chain grate air-delivering air-controlling device, in which the air-delivering device has five plenums. A blast-regulating plate is arranged in the air passage on both sides of the plenum and a rotary push-pull damper air-regulating assembly is disposed at the air inlet of each plenum. The fuel and the air are mixed well via the air-regulating device to make the fuel burn up.

Description

technical field [0001] The invention belongs to the technical field of boiler auxiliary facilities, in particular to a rotary push-pull chain grate air distribution and air conditioning device for coal-fired chain boilers. Background technique [0002] To achieve clean and efficient combustion of the boiler, the air distribution and adjustment of the grate is one of the most important factors. In the existing technology, the air distribution devices of medium and small chain boilers mostly use five air chambers. The chain grate is driven by a motor and runs around the air chamber. The fuel falls on the chain grate through the coal hopper, and continuously The air continuously enters the furnace and passes through the five air chambers in turn. The air is introduced from the inlet of the air chamber to intersect the fuel supply direction at a certain angle, and the air is supplied from bottom to top through the top cover vent. Due to the air distribution device in the prior ...

AI Technical Summary

Problems solved by technology

Due to the air distribution device in the prior art, the air inlet of the air chamber has a narrow and long rectangular structure, and is arranged in a line along the length direction of the air chamber. The required air volume is reasonable to supply air. When the air enters the furnace from the air inlet, the unreasonable air supply and distribution will cause partial fire, oblique fire, and local burners in the furnace, as well as a large excess coefficient of air at the burner, a large flow rate, and fly ash. Disadvantages such as serious, combustion deterioration, insufficient cinder combustion, etc.

Due to the low combustion efficiency, the temperature of the furnace is reduced, so that the heating efficiency of the boiler is not high, and the smoke and dust emitted by the boiler are greatly increased, resulting in serious pollution of the surrounding air.

Secondly, the air regulating plate of the air distribution device is close to the air inlet. This structure limits the opening height of the air inlet. Since the air inlet is smaller than the height of the air chamber, the pressure drop in the air chamber is too large, which is not conducive to penetrating the coal seam. The fullness is poor, which affects the combustion effect of coal on the grate. During operation, uneven combustion occurs on the entire grate surface, low wind pressure and partial burning, and it is not easy to catch fire. , to aid combustion

For this reason, it not only increases the labor intensity of the fireman, but also affects the environmental sanitation of the boiler room, and also directly affects the thermal load and thermal efficiency of the boiler.

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