Double-screw type shaft head pump of compressor

The utility model provides a double-screw type shaft head pump of a compressor. The double-screw type shaft head pump comprises a pump body with a suction inlet and an exhaust outlet, wherein a driving screw and a driven screw, which are meshed with each other, are arranged in the pump body; the two ends of the pump body are sealed by a front cover and a rear cover; one end of the driving screw extends to the outer side of the front cover and is connected with a crankshaft of the compressor, and the other end of the driving screw is supported on the rear cover through a movable bearing; a rolling bearing is arranged between the driving screw and the front cover; the two ends of the driven screw are supported between the front cover and the rear cover through sliding bearings; a left screw sleeve and a right screw sleeve are arranged on the driving screw and the driven screw, respectively; synchronous gears, which are connected with the driving screw and the driven screw, are arranged between the left screw sleeve and the right screw sleeve. Therefore, the operating life of the shaft head pump is further prolonged, the manufacturing cost is reduced, and the operation of the compressor is facilitated.