Pump body and compressor

The pump body comprises a main body structure, a first air cylinder, a first roller, a second air cylinder and a second roller, and the main body structure is provided with a first exhaust port, a second exhaust port and a third exhaust port which are arranged at intervals; the first cylinder is arranged on the main body structure; the first exhaust port is communicated with a cavity of the first cylinder; the first roller is arranged in a cavity of the first air cylinder, and the volume of an area defined by the inner wall of the cavity of the first air cylinder and the outer wall of the first roller is V1; the second air cylinder is arranged on the main body structure, and the second exhaust port and the third exhaust port communicate with a cavity of the second air cylinder; the second roller is arranged in a cavity of the second air cylinder, and the volume of an area defined by the inner wall of the cavity of the second air cylinder and the outer wall of the second roller is V2; wherein V1/V2 is equal to