Booster pump for air supply device

The utility model discloses a booster pump for an air supply device. The booster pump comprises a pump body, a driving reversing device, a driving compression device, a driving cylinder tail cover, acompression cylinder tail cover and a partition plate. A driving reversing device is arranged on the left side of the upper end of the pump body; a driving compression device is arranged in the pump body, and the driving compression device and the driving reversing device are matched for use; the partition plate is arranged in the longitudinal middle of the driving compression device; the drivingcylinder tail cover is arranged on the left side of the pump body; the compression cylinder tail cover is arranged on the right side of the pump body; and the driving cylinder tail cover and the compression cylinder tail cover are both matched with the driving compression device. The self-pressurization system is reasonable in design, convenient to use and high in working efficiency, natural gas is pressurized through powe