Efficient oil separator for engine

The utility model discloses an efficient oil separator for an engine, which relates to the technical field of oil separators and comprises a base, a large welding cover is arranged on the front side of the base, a cover is arranged on the left side of the base, aluminum foil cloth is arranged on the front side of the large welding cover, and an air inlet pipe is arranged on the right side of the base. A channel wall primary separation device is arranged on the right side of the large welding cover, a diaphragm piece is arranged on the left side of the large welding cover, a low-pressure pipeline one-way valve and a high-pressure pipeline one-way valve are arranged in the middle of the large welding cover, an air outlet pipe is arranged at the bottom of the large welding cover, and the channel wall primary separation device comprises a pressure relief diaphragm. And filter cotton is arranged at the top and the bottom of the pressure relief membrane. The device is provided with two gas passing modes of the filt