There are two functions of the automatic electric heating constant temperature drinking water tank in the cattle farm. The first main function is to ensure the drinking water demand of cattle and sheep, because the automatic electric heating constant temperature drinking water tank can realize automatic water addition, so that cattle and sheep can drink water at any time. The second is to allow cattle and sheep to drink warm water at any time when entering autumn and winter, which is good for the stomach and physique of cattle and sheep. The automatic water filling function of Niuchang automatic electric heating constant temperature drinking water tank is mainly completed by the patented "floating ball valve" installed inside the tank. The "floating ball valve" is connected to the water inlet valve in the tank, so the height of the ball valve determines the height of the tank Whether the water inlet valve is open or closed, the height of the ball valve mainly changes with the change of the water level inside the tank. When the water level inside the tank rises to a certain height, the ball valve will close the water inlet valve according to its own height change. When the water level inside the tank drops to a certain height, the ball valve will open the water inlet valve according to the automatic height change. Therefore, the drinking water needs of livestock are no longer manually operated. Another automatic heating and constant temperature function of the cattle farm automatic electric heating constant temperature drinking trough is mainly completed by four technologies: temperature controller, temperature sensor, electric heating belt, and insulation layer. The temperature that can be set by the temperature controller is (5-40 degrees, the default temperature of the general setting is 25 degrees) The temperature sensor is used to detect the change of the water temperature inside the tank in real time. The function of the electric heating belt is mainly to complete the heating of the water inside the tank The function of the insulation layer is mainly to reduce the loss rate of the water temperature inside the tank, so as to save energy. As long as the temperature controller is turned on, the automatic electric heating constant temperature drinking water tank can automatically complete the heating and heat preservation function for 24 hours, and because of the existence of a temperature sensor, when the water temperature inside the tank changes, it will be transmitted to the control cabinet in real time. Then the control system decides whether the electric heating belt should stop heating or continue heating, so that cattle, sheep, horses and donkeys can drink real-time warm water that is beneficial to the health of the body in the cold autumn and winter.The control cabinets of the automatic electric heating constant temperature drinking water tanks are all equipped with transformers, which can convert the voltage of 220V into a safe voltage of 36V-24V, so that the automatic electric heating drinking water tanks will not appear electric cows when they are working, and for cattle and sheep to drink water It is safer, and the leakage protection device is added inside the water tank, so farmers don't have to worry about the safety of use.