Anti-oil-leakage screw type air compressor

The utility model relates to the technical field of air compressors, and discloses an oil leakage prevention screw air compressor which comprises a connecting pipe installed at the bottom of a screw air compressor body, a first flange is fixedly installed at one end of the connecting pipe, and the first flange is connected with a second flange through a butt joint assembly. The axis of the second flange is fixedly connected with an oil separator feeding hole; the limiting assembly comprises two mounting plates mounted at the bottom of the screw air compressor body, sliding grooves are formed in the mounting plates, springs are fixedly connected to the tops of the sliding grooves, and the lower ends of the springs are connected with the second flange. The feeding port of the oil separator is locked and fixed by manually screwing the threaded sleeve, and the mounted oil separator is further tensioned and limited by the spring, so that the oil separator can be stably mounted under the condition that the oil sepa