Durable acetylene compressor

The utility model discloses a durable acetylene compressor, its working chamber include cylinder cap, sealing washer, gas latallae, middle diaphragm, oily latallae, join in marriage food tray and cylinder body, and the cylinder cap is provided with the air cavity curved surface, joins in marriage the food tray and is provided with the oil pocket curved surface, join in marriage the food tray and are provided with oily side seal face, and the cylinder cap is provided with gas side seal face, and oily side seal face matees with gas side seal facial features, the fixed pin that is provided with of oily side seal face, and the pin is the circumference distribution and is joining in marriage the food tray, each diaphragm all is provided with the pin through -hole, and gas side seal face is provided with the cotter slot, the sealed pad including gas side seal pad and oily side seal pad, gas side seal face is provided with gas side seal pad groove, and oily side seal face is provided with oily side seal pad groove.