The invention discloses a
straw bale
direct combustion boiler
combustion control system which comprises a fire grate, a boiler falling on the fire grate, a stock bin at the front end of the fire grate, a stock bin negative pressure meter detection opening in the upper position of the stock bin, a feeding device connected with a stock bin opening, a
combustion cavity at the lower end of the stock bin, namely a main
combustion area, and a bale breaking device in the upper position in the combustion cavity. A
hearth temperature sensor is arranged at the position, close to the connecting arch, of the boiler, and a controller, a fire grate speed
reducer, a
burnout fan, a fire grate
air blower, a heat exchange cylinder, a dust remover, an induced draft fan and a
chimney are further arranged. The frequency of the feeding device, the frequency of the bag breaking device, the frequency of the air blowing and inducing fan and the frequency of the fire grate speed
reducer can be controlled in a linkage mode according to the
hearth temperature condition, and dynamic combustion is achieved; micro-negative pressure in the stock bin is realized by detecting the pressure in the stock bin, so that
smoke return and fire return of a stock bin opening are avoided; and through daily and powerful
modes of the bag breaking device, the problems of non-uniform material falling and bag breaking efficiency of straws with different qualities are solved, and the practicability is higher.