Rotary individually ventilated cage system

A rotary individually-ventilated-cages (IVC) system, comprising:

• a cage holder having an air supply pipeline and an air exhaust pipeline that are independent and nested with each other, and the cage holder is provided with a plurality of air supply ports in communication with the air supply pipeline and a plurality of air exhaust pipes in communication with the air exhaust pipeline;
• the cage holder comprising a plurality of cage holder units, each cage holder unit comprising:
• a holder bottom surface for placing the cages thereon;
• a holder side wall formed in the middle of the holder bottom surface and arranged to vertically pass through the holder bottom surface, wherein the holder side wall forms an air cavity, and the air supply port is disposed on the holder side wall;
• wherein the plurality of cage holder units are stacked in a vertical direction, and adjacent holder side walls are sealed and combined to form the air supply pipeline communicating the cage holder units;
• independent air chambers are formed in the air cavity enclosed by the holder side wall, the air chambers are connected to the holder side wall via the air exhaust pipe, and each of the air chambers is in sealed communication with an adjacent one of the air chambers to form the air exhaust pipeline communicating the cage holder units;
• a plurality of rotary cages arranged on the cage holder, and each cage is in communication with one of the air supply ports and one of the air exhaust pipes;
• and
• a support tube, wherein the support tube is arranged to pass through a plurality of air chambers and is sealed with the air chambers, a plurality of air extraction holes are provided on the support tube corresponding to the air chambers, and the support tube cooperates with the air chambers to form the air exhaust pipeline;
• wherein the air supply pipeline and the air exhaust pipeline are designed to be connected to a fresh-air supply and exhaust system;
• wherein during the continuous operation of the fresh-air supply and exhaust system, air in the cages is continuously exhausted from the air exhaust pipeline to the fresh-air supply and exhaust system, and clean air obtained from purification of the fresh-air supply and exhaust system is supplied into the cages from the air supply port via the air supply pipeline, so as to keep the air in the cages fresh and clean;
• a total area of the air extraction hole corresponding to each of the air chambers gradually decreases by 8% to 15% in an air extraction direction of the support tube.