Buried integrated rural domestic sewage treatment device

The invention discloses a buried integrated rural domestic sewage treatment device which comprises a buried body, and a driving device and a time delay device are arranged at the top of the buried body; the loofah sponge is fixed through cooperation of a tensioning device, a lifting device and a purification device, the problems of local filler accumulation and blockage are solved; the purification device is periodically driven to operate through cooperation of the lifting device, the driving device, the time delay device, a strain device and a transmission device, and the loofah sponge entersactivated sludge one by one and is subjected to biofilm culturing again; the problem that the purification effect of the loofah sponge becomes poor gradually due to the fact that a biological film onthe loofah sponge is aged gradually and falls off from the loofah sponge easily in the using process is solved; through cooperation of the buried body, the tensioning device, the lifting device, thedriving device and the puri