Feed and chip removal device for biomass combustion furnace and combustion furnace

Abstract

The invention discloses a feed and chip removal device of a biomass combustion furnace and the combustion furnace. The feed and chip removal device comprises a vertical screw and a chip removal channel and is characterized in that the chip removal channel is arranged on the periphery of a screw column at the lower end of the vertical screw, a chip removal screen plate and a chip scraping device are arranged in the chip removal channel, and the chip scraping device is arranged below the chip removal screen plate. The feed and chip removal device of the biomass combustion furnace and the combustion furnace have the advantages that chip removal grooves are uniformly formed in blades of the vertical screw, the chip removal screen plate is installed at the lower end of the vertical screw, a chip scraping plate is installed under the chip removal screen plate, a vertical screw support is provided with a chip removal opening A, and therefore chips in fuel can be discharged out of a furnace body, the number of the chips in the fuel in a furnace chamber can be reduced, sparks generated by combustion of the chips can be reduced, ash discharge can be reduced correspondingly, and pollutants can be reduced correspondingly; a screw air channel is formed in the center of the vertical screw, a screw air outlet hole is formed in the upper end of the vertical screw, and therefore air can be uniformly blown even if the diameter of the furnace chamber is large; the screw air channel has the ash discharge effect, and therefore the combustion furnace can work more stably and is better in environmental friendliness.

Description

technical field [0001] The invention belongs to a solid fuel combustion furnace, and relates to a fully automatic feed biomass combustion furnace in which the fuel is burned from top to bottom, in particular to a biomass combustion furnace feeding chip removal device and a combustion furnace. Background technique [0002] The combustion device that uses the top-down combustion method for fuel has been continuously developed. The existing feeding device is "closed biomass fuel feeding device", patent number: CN200820185125.6. The flap door device of the device, the flap door device is provided with a fuel inlet, the lower end of the screw device communicates with a metering silo, and the metering hopper is equipped with a fuel level detection device; another example is the applicant CN201110072163.7 of "A Fuel Feeding Device for Furnace with Full-automatic Feeding and Burner Furnace", which adopts the method of mobile replenishment and push-type feeding, and continuously prom...

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Problems solved by technology

[0002]The fuel adopts the top-down combustion method of the combustion device after continuous development, the existing feeding device such as "closed biomass fuel feeding device", the patent No.: CN200820185125.6, the upper end of the screw device is provided with a flap door device connected to the screw device, the flap door device is provided with a fuel inlet, the lower end of the screw device is connected with a metering silo, and the metering silo It is equipped with a fuel level detection device inside; another example is "A Fully Automatic Feeding Combustion Furnace and Burner Fuel Feeding Device" CN201110072163.7 held by the applicant, which adopts mobile replenishment and push-type feeding The way of continuous advancement to achieve continuous and uninterrupted fuel addition can meet the continuous long-term fire demand. Since the above-mentioned feeding device cannot remove the crumbs in the fuel, the content of fuel dust in the furnace is relatively large, and there are many sparks at the fire outlet. The amount of dust emission is also relatively large, which pollutes the atmosphere

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