Refrigerated centrifuge

The utility model discloses a refrigerated centrifuge which is characterized by comprising a centrifuge body, one end of the centrifuge body is hinged with a cover plate, the centrifuge body is provided with an inner cavity, a rotating seat is arranged in the inner cavity, a driving motor is arranged in the centrifuge body, the driving motor is connected with the rotating seat, a groove is formed in the rotating seat in a surrounding mode, and the rotating seat is connected with the rotating seat. A swing arm is arranged in each groove, the bottom of each swing arm is hinged to the connecting block, a placing groove for placing a test tube is formed in each swing arm, a spring is arranged at one end of each swing arm in a pressing mode, the other end of each swing arm abuts against an adjusting bolt, and the adjusting bolts are connected to the side wall of the rotating base in a screwed mode; a liquid nitrogen inlet is formed in the side wall of the machine body and communicates with an inner cavity of the m