The invention relates to a bundled
straw direct-fired module fast-
assembly boiler which is partially arranged above a fire grate and comprises a stock bin, a direct-fired module, a direct-fired module and a direct-fired module, the
combustion cavity is located below the stock bin; the
water cooling device and the stock bin are arranged in the length direction of the fire grate, and the
water cooling device is connected to the
combustion cavity; the heat exchange device is connected to the
water cooling device and located on the side, away from the stock bin, of the water cooling device. According to the technical scheme, the
combustion cavity is arranged below the stock bin, so that the whole bag breaking process is in a high-temperature environment, the bag breaking difficulty is reduced, meanwhile, most
straw fuel is consumed, and the subsequent fuel consumption pressure is relieved; meanwhile, the stock bin, the water cooling
system and the heat exchange device are all independent modules and can be independently transported to an installation site to be combined and spliced conveniently, compared with a traditional boiler, a large amount of site building and
welding work is omitted, the installation period is greatly shortened, and the installation cost is reduced.