The deep well pump is a water-lifting tool that is directly connected to the motor and the water pump and submerged into the water. It is suitable for extracting groundwater from deep wells, and can also be used for water-lifting projects such as rivers, reservoirs, and canals: it is mainly used for farmland irrigation and water for humans and animals in plateau mountainous areas. It can be used for water supply and drainage in cities, factories, railways, mines and construction sites. Since the deep well pump is operated by submerging the motor and the pump body directly into the water, whether it is safe and reliable will directly affect the use and working efficiency of the deep well pump. Therefore, deep well pumps with high safety and reliability have also become the first choice.

In the groundwater source heat pump air conditioning system, the water supply of one deep well pump can often meet the water required by two or more heat pump units. However, in actual operation, it is found that the heat pump unit is operating at part load most of the time, while the deep well pump is always operating at full load, resulting in a large increase in electricity and water costs.