The milking machine is composed of two parts: a vacuum pump and a milking machine. The former mainly includes vacuum pumps, motors, vacuum tanks, vacuum regulators, vacuum pressure gauges, etc.; the latter consists of milking barrels, pulsators (or pulsators), milk collectors, milking cups, and some catheters and rubber tubes. Each milking machine includes 8-10 pairs of milking machines, which are sufficient for milking 100-120 cows. The new pipeline milking machine does not have a milking barrel. The milk flows from the milking cup through the milking machine and directly into the milk storage tank through the pipeline, completely isolated from the outside; and can automatically adjust the vacuum pressure of the milking cup according to the milk flow , It can fall off automatically after squeezing, so as not to "empty the car". The milk storage tank is made of stainless steel. The tank is sandwiched with a serpentine tube inside. It is filled with refrigerant such as Freon No. 20. There are 2 electric stirrers in the tank, which can quickly reduce the milk temperature to 2 to 3°C.