Coal-fired boiler auxiliary combustion device

Abstract

The invention relates to the technical field of boilers, in particular to a coal-fired boiler auxiliary combustion device. The coal-fired boiler auxiliary combustion device comprises an installation seat. An installation hole is formed in the installation seat, L-shaped supporting rods are welded to the four corners of the side edges of the installation seat, and three layers of bearing steel plates are arranged above the installation seat in the mode that the bearing steel plates are in parallel with the installation seat; the upper ends of the L-shaped supporting rods are welded to the four corners of the outer sides of the bearing steel plates, a plurality of through holes are evenly formed in each bearing steel plate at equal intervals, and the top face of the lowest bearing steel plate is slidably connected with a baffle; a connecting rod is connected to the middle of the baffle and is arranged to be perpendicular to the baffle, a bent-type steel pipe is arranged between every two bearing steel plates, and the bent-type steel pipes are fixed to the bearing steel plates through fixing rings; and a plurality of air scattering ports are evenly formed in each bent-type steel pipe at equal intervals, one side of each bent-type steel pipe is connected with a straight-type steel pipe, and each straight-type steel pipe is connected with a U-shaped air pipe which is connected with an air blower. According to the coal-fired boiler auxiliary combustion device, the problem that coal briquettes in an existing coal-fired boiler are insufficiently combusted is solved.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to an auxiliary combustion device for a coal-fired boiler. Background technique [0002] The boiler is a kind of energy conversion equipment. The energy input to the boiler includes chemical energy and electric energy in the fuel, and the boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of heat energy. The original meaning of the pot refers to the water container heated on the fire, and the furnace refers to the place where fuel is burned. The boiler includes two parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. [0003] Most of the existing small heating boilers in rural areas are coal-fi...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages in the prior art that the inner layer of coal in the furnace of a small coal-fired boiler cannot fully contact with the air, resulting in insufficient combustion and waste of fuel, and proposes an auxiliary combustion device for a coal-fired boiler

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