The invention discloses an automatic
temperature control lower reverse
combustion type
coal-fired boiler. The automatic
temperature control lower reverse
combustion type
coal-fired boiler comprises a boiler body, a
water heating layer, a
coal feeding inlet, an ash outlet, a
smoke outlet, a
waste heat water tank, an electrical appliance protective cover, an observation opening, an automatic reciprocating grate and a linkage arm, wherein the
water heating layer is arranged around the boiler body, a
heat flow buffer chamber is formed by the
water heating layer in the boiler body, the
waste heat water tank is arranged outside the water heating layer, and a lower reverse
combustion heating
pipe is arranged in the boiler body; the automatic reciprocating grate is arranged in the boiler body, an upper
combustor is arranged above the automatic reciprocating grate, a lower
combustor is arranged below the automatic reciprocating grate, and a temperature sensor is arranged on the boiler body. According to the structure of the automatic
temperature control lower reverse combustion type coal-fired boiler, the upper
combustor and the lower combustor are formed so as to achieve the purpose of complete combustion, combustion can be conducted for 3-5 days when a
coal storage bin is filled with coal, fire banking can be conducted for seven days, the temperature is automatically controlled, the automatic acousto-optical indication is given when coal deficiency exists, ash falls off through the automatic reciprocating grate, drinkable hot water can be obtained for a long time,
thermal efficiency is high, the temperature rise is rapid, installation and maintenance are convenient, and the automatic temperature control lower reverse combustion type coal-fired boiler is applicable to civil heating and heating for small enterprises.