在使用的时候，先向泵体内注满水，在电动马达的高速转动下，带动水泵叶轮高速旋转，因此，叶轮中的水也也随之旋转起来，在泵体的离心里的作用之下，液体以出口管道排出，等水排出后，在泵壳内的旋转轴附近就形成真空。 When the low-temperature coolant circulation pump is in use, first fill the pump body with water. Under the high-speed rotation of the electric motor, the water pump impeller is driven to rotate at a high speed. Therefore, the water in the impeller also rotates with it. Under the action of the heart, the liquid is discharged through the outlet pipe. After the water is discharged, a vacuum is formed near the rotating shaft in the pump casing.
When the pump is filled with water, centrifugal force is generated when the impeller rotates. The reduction of the impeller center pressure is due to the centrifugal force of the water in the impeller channel, which is thrown into the surroundings of the pump casing. This pressure is generally lower than the pressure in the steam inlet pipe, and the water flows in from the suction basin under the effect of this pressure difference. Impeller. In this way, the pump can continuously absorb water and supply water continuously. Under the influence of external pressure, the water in the water inlet pipe is pressed into the trampoline to fill the vacuum. So as long as the impeller keeps turning, water will continuously flow from the direction of the tangent to the water inlet pipe, which will be discharged through the pump outlet.
This completes the entire workflow. The low-temperature circulation pump adopts a mechanical-type refrigeration low-temperature liquid circulation equipment. This machine cooperates with vacuum freeze-drying boxes, circulating water multi-purpose vacuum pumps, magnetic stirring and other instruments to perform multifunctional chemical reaction operations and drug storage at low temperatures. With the function of providing low temperature liquid and low temperature water bath.
In the working state of the low-temperature cooling liquid circulation pump , the built-in circulating pump pumps the low-temperature liquid in the tank to the experimental device that needs to be cooled. Then, the low-temperature liquid returns to the low-temperature tank for cooling, and the circulation is continuously and continuously cooled.
 Before using the low-temperature coolant circulation pump, a liquid medium (pure water, alcohol, and antifreeze may also be added) in the tank. The liquid level of the medium should not exceed the cooling coil in the tank and be 20mm below the workbench.
 Power supply: 220V50Hz, the power of the power supply should be greater than the total power of the instrument, and the power supply must have a good "grounding" device;
 Avoid acid and alkali substances from entering the tank to corrode the coil and the liner.
 The instrument should be placed in a dry and ventilated place with no obstacles within 300mm around the instrument;
 Always pay attention to the level of the liquid in the tank. When the liquid level is too low, add a liquid medium in time;
 When the working temperature of the low-temperature coolant circulation pump is low, care should be taken not to open the upper cover, and hands should not enter the tank to prevent frostbite;
 After use, all switches are turned off and the power is cut off;
 When the liquid is circulated externally, the customer should pay special attention to the firmness of the connection of the outlet pipe and prevent it from falling off to prevent the liquid from leaking.
 The instrument should be cleaned frequently. If it is not used for a long time, empty the medium in the tank and wipe it clean to keep the work surface and operation panel clean.