SCR urea pump is an important part of the urea solution injection metering system. Its main function is to extract the urea solution in the urea tank and maintain a certain pressure, then transfer it to the injection unit, to meet the flow and pressure requirements of the injection metering system.

dosing pump is a kind of special volumetric pump that can meet the needs of various strict processes, the flow rate can be steplessly adjusted in the range of 0-100%, used to transport liquids (especially corrosive liquids). dosing pump is also called quantitative pump or proportional pump. dosing pump belongs to reciprocating volumetric pump, used for precise measurement, usually requires dosing The stability accuracy of the dosing pump does not exceed ±1%.

Using the mechanical action of the pump, the low-temperature refrigerant is delivered to the evaporator. After throttling, the low-temperature refrigerant first enters the fluorine barrel with certain storage volume and certain gas-liquid separation volume, and then the fluorine pump conveys several times of the evaporated low-temperature liquid to the evaporator in each storehouse.