Oil removal device for oily wastewater

According to the oil removal device for the oily wastewater, a mixing barrel is arranged on a frame body, a stirrer is arranged in the mixing barrel, an oil-water separation mechanism is arranged at the bottom of the frame body, and a cavity between an outer barrel and an inner barrel of the oil-water separation mechanism is an oil storage cavity; the oil storage cavity is communicated with the mixing barrel through a liquid inlet hole in the wall of the outer barrel and a pipeline, a water inlet valve is installed on the pipeline, an oil outlet communicated with the oil storage cavity is formed in the bottom of the outer barrel, an oil discharge valve is installed on the oil outlet, and oil scraping plates are arranged on the inner barrel and the outer barrel of the oil storage cavity. The two ends of the inner cylinder extend out of the outer cylinder, one end of the inner cylinder is closed and provided with a transmission shaft, the transmission shaft is connected with the power end of a motor located on