Crushing device and garbage treatment equipment for building construction

The invention relates to the technical field of building construction, in particular to a smashing device and garbage disposal equipment for building construction.The smashing device comprises a box body, a smashing cavity is formed in the box body, and a primary smashing device, a secondary smashing device, a tertiary smashing device and a discharging port are sequentially arranged in the smashing cavity from top to bottom; the primary crushing device comprises a scattering device and primary crushing plates arranged on the two sides of the scattering device, crushing teeth are evenly distributed on the primary crushing plates, and the scattering device is connected with a high-speed motor and used for driving the scattering device to rotate at a high speed through the high-speed motor so as to collide and crush construction waste; the construction waste is thrown onto the primary crushing plate, and primary crushing is conducted on the construction waste through crushing teeth; in conclusion, by the adoptio