Compressor pump body, compressor, and air conditioner

A compressor pump body, comprising a sliding vane, a first flange and a second flange;

• the sliding vane comprises a main body;
• the main body is provided with a first surface and a second surface arranged opposite to the first surface;
• the first surface abuts against the first flange, and the second surface abuts against the second flange;
• the first surface is provided with an enlargement portion, or the second surface is provided with an enlargement portion, or the first surface and the second surface are provided with enlargement portions;
• an exhaust port is formed in the first flange or an exhaust port is formed in the second flange, or exhaust ports are formed in the first flange and the second flange;
• when the sliding vane rotates to sweep the exhaust port, the enlargement portion is able to prevent two sides of the sliding vane in a rotation direction from communicating by means of the exhaust port.