Secondary oil return device of compressor

The utility model discloses a secondary oil return device of a compressor, and relates to the technical field of air compressor accessories. The secondary oil return device comprises an oil fine separator installed in a gasoline drum assembly, a first secondary oil return pipe inserted into the oil fine separator and a second secondary oil return pipe with one end connected to the end of an air inlet valve at the top of a compressor body. The first secondary oil return pipe and the second secondary oil return pipe are connected through a first clamping sleeve connector. The end, inserted intothe oil fine separator, of the first secondary oil return pipe is a high-pressure cavity, and the first secondary oil return pipe and a sealing cover at the top of the gasoline drum assembly are embedded through a second clamping sleeve connector; and the second secondary oil return pipe is connected with the air inlet valve through a third clamping sleeve joint and a throttling joint. According to the compressor, use of