Gas booster pump driven by servo motor

The invention relates to the technical field of gas booster pumps, in particular to a servo motor driven gas booster pump. According to the technical scheme, the device comprises a high-pressure end cover, a high-pressure cavity and a servo motor, the high-pressure end cover and the servo motor are fixedly connected through the high-pressure cavity, an output shaft of the servo motor is spirally sleeved with a lead screw, piston rods are fixedly connected to the two ends of the lead screw, and pistons are connected to the ends, away from the lead screw, of the piston rods; a positioning block is fixedly connected to the interior of the servo motor, and a positioning groove matched with the positioning block is formed in the outer wall of the lead screw; the servo motor is fixedly sleeved with a motor cooling sleeve used for conducting water cooling on the servo motor. The direct-drive motor is adopted to drive the lead screw to achieve automatic reciprocating design of the high-pressure piston, and the proble