Urban household garbage crushing machine

The invention discloses an urban household garbage crushing machine which comprises a material inlet, a compression cavity, a crushing cavity, a material outlet and a compression motor, wherein crushing blades are arranged in the crushing cavity and are connected with crushing motors through cutter shafts; a Relo triangular rotor and an eccentric shaft are arranged in the compression cavity, so that a compression rotor can be driven to rotate around the center of the compression rotor, and the compression rotor can be also driven to revolve around the center of the compression cavity; therefore, three corners of the compression rotor in a rotating process can be always attached to the inner wall of the compression cavity; automatic control on the crushing machine can be realized by arranging electric appliance components such as a microcomputer controller. Compared with the prior art, the urban household garbage crushing machine has the advantages that stop caused by shaft winding can be effectively avoided; sizes of particles can be changed by adjusting rotating speeds of the blades and a speed difference of the two groups of blades; the power consumption can be effectively stabilized, and the sizes of the crushed particles can be effectively controlled; pressure on the crushing cutter shafts is reduced, and stop caused by material locking is prevented.