Air compressing drive type vacuum pump

The invention relates to an air compressing drive type vacuum pump. The vacuum pump comprises a cylinder body provided with a flowing-in cabin allowing air to flow in and an exhaust cabin allowing air to be exhausted outside; a plurality of suction cabins are arranged between the flowing-in cabin and the exhaust cabin, and a vacuum forming line is formed through series connection of spraying and sucking devices mounted on a flowing-in port in the side wall of the flowing-in cabin and the side walls of the suction cabins, an exhaust pipe arranged on the side wall of the exhaust cabin and the like; the exhaust pipe is movably connected with the side walls of the exhaust cabin in an axial rotating manner, and the periphery of each exhaust pipe is communicated with at least one exhaust hole; and through a rotatable exhaust port, the noise generated when compressed air is exhausted is effectively lowered, smooth exhausting of air of the exhaust cabin can be ensured, and the whole vacuum degree is improved. 本发明涉及种空