Improved structure for integrated oil-gas separator

The invention relates to an improved structure for an integrated oil-gas separator. The improved structure comprises a cylinder head protecting cover, wherein oil-gas separation chambers are arranged on the inner surface of the cylinder head protecting cover and comprise a first oil-gas separation chamber positioned on a gas inlet side and a second oil-gas separation chamber positioned on an exhaust side; the first oil-gas separation chamber adopts a four-stage separation structure; the second oil-gas separation chamber adopts the four-stage separation structure. According to the invention, by adopting the four-stage separation structure and the structure that cyclone separation plate groups are additionally arranged, when the oil-gas mixed gas passes through the cyclone separation plate groups, gas flow generates vortexes through the arrangement of curve plates, oil and gas are separated from each other under the effect of vortexes since oil and gas are different in density, large separated oil drops directly fall on oil baffles, and small oil drops collide the surfaces of the cyclone separation plates and flow towards pore plates along the surfaces of the cyclone separation plates, so that the oil-gas separation effect is improved.