The invention discloses a device integrating
solid crushing and coarse and fine gratings, which relates to a
sewage treatment device, in particular to a
solid crushing device with the coarse and fine gratings. The device comprises a coarse
grating and crushing device (1), a fine
grating and crushing device (2), a water inlet (3), a water outlet (4), a coarse
grating (5), a fine grating (6), an electromotor (7), a gearbox (8), a rotating
brush shaft (9), a
reamer shaft (10), a rotating
brush holder (11), a rotating
brush (12), a
reamer (13), a dreg storage chamber (14), a dreg discharging valve (15) of the coarse grating and crushing device, a dreg discharging valve (16) of the fine grating and crushing device, a dreg discharging main
pipe (17), an inspection manhole (18), a corresponding water
fender, a deflector, a bracket, pipeline fittings and the like. The device integrating the coarse and fine gratings and
solid crushing is in a fully-closed structure and is free from the volatilization of foul smell and the propagation of flies. The device has the characteristics of novel constitution, low
energy consumption, small occupied area, convenience in management, environment-friendliness and the like, and is worth popularization and application.