Oil-water separator

The utility model relates to the technical field of oil-water separation, and discloses an oil-water separator which comprises a water outlet pipe fixedly connected to the inner bottom wall of a box body, a supporting plate is arranged on the upper side of the inner wall of the box body, a lifting basket grating is supported on the supporting plate, a siphon pipe is arranged on the water outlet pipe in a communicated mode, a filter sieve is arranged at the bottom of the siphon pipe, and the filter sieve is arranged on the inner wall of the box body. An observation opening is formed in one side of the box body, an oil discharging valve is arranged on one side, located at the observation opening, of the box body, an emptying valve is arranged on the lower side of the box body, and an exhaust part is arranged at the bottom of the side, provided with the observation opening, of the box body. Through cooperative arrangement of the observation opening and the oil discharging valve, the position of an oil body can b