Vertical oil-water separation device

The invention belongs to the field of sewage oil-water separation, and particularly provides a vertical oil-water separation device which comprises a top solid separation mechanism, a sewage slow flow coarse graining mechanism, a vertical separation cylinder mechanism, a cylinder water level sensing mechanism and a drain valve mechanism. The sewage slow flow coarse graining mechanism is arranged between the top solid separation mechanism and the vertical separation barrel mechanism in a penetrating manner, the barrel water level sensing mechanism is arranged in the vertical separation barrel mechanism, and the multiple groups of drain valve mechanisms are arranged on the outer bottom wall of the vertical separation barrel mechanism. The device is small in occupied area, can remove solid particles and solid attached oil with different densities in sewage, improves the oil-water gravity layering speed and quality by using a coarse graining method, can dynamically detect the position of an oil-water boundary lay