The invention provides an oil-water separation device, which includes a filter residue 
pool, a separation box, partition plates, and oil guide pipes. A feed 
pipe is inserted into the filter residue 
pool, the separation box is internally provided with three uniformly spaced partition plates, the partition plates divide the separation box into four independent 
sedimentation tanks, the front side wall of each 
sedimentation tank is connected to an oil guide 
pipe, the tails of the plurality of oil guide pipes are welded to an oil guide main 
pipe and the plurality of oil guide pipes are communicated with the oil guide main pipe. Each partition plate is provided with a 
cut-through transverse hollow pipe, the left end of each transverse hollow pipe is welded with a vertical hollow pipe communicated with the same, the bottom of a front side wall on a rightmost 
sedimentation tank is equipped with a through-hole, and a 
discharge pipe is fixed on the through-hole. The oil-water separation device provided by the invention carries out repeated 
precipitation separation, and achieves thorough separation, the hollow pipes disposed on the partition plates realize flow and separation simultaneously, the oil-water separation device has fast treatment speed, realizes 
intelligent control and detection, and is in line with industrial production, and the arranged funnel and 
discharge pipe valve are convenient to observe whether complete separation is achieved, if the separation is incomplete, the valve can be closed for further separation.