Pump body assembly, fluid machine and heat exchange equipment

The utility model provides a pump body assembly, a fluid machine and heat exchange equipment. The pump body assembly comprises an air cylinder provided with a first sliding sheet groove; the roller is arranged in the air cylinder and forms a first compression cavity with the inner wall of the air cylinder; the first sliding sheet is in sliding connection with the first sliding sheet groove, at least one part of the first sliding sheet is contained in the first sliding sheet groove, and the top of the first sliding sheet is connected with the roller; the crankshaft is provided with an eccentric part, and at least one part of the outer periphery of the eccentric part is cut off, so that the roller and the outer periphery of the eccentric part form a second compression cavity; the roller is provided with a second sliding piece groove, the second sliding piece is connected with the second sliding piece groove in a sliding mode, at least one part of the second sliding piece is contained in the second sliding piece