Pump body assembly for compressor and compressor

The invention relates to the technical field of refrigeration equipment, and discloses a pump body assembly for a compressor, which comprises a crankshaft, a cylinder, a first flange, a second flange, a first silencing part and a second silencing part. The air cylinder is arranged on the crankshaft and provided with a first airflow channel. The first flange is arranged on the crankshaft in a sleeving mode and connected with one end face of the air cylinder, and a first airflow through hole is formed in the first flange. The crankshaft is sleeved with the second flange, the second flange is connected with the other end face of the air cylinder, the second flange is provided with a second airflow through hole, and the first airflow through hole, the first airflow channel and the second airflow through hole are axially and correspondingly communicated to form a second airflow channel. And an extending flow guide part is arranged at the end part of the second airflow channel. And the extending flow guide part is