Relevant knowledge points of low temperature coolant circulating pump

Issue date:2022/03/08    Views：35    Classification：Company news

The low-temperature coolant circulating pump adopts air-cooled fully enclosed compressor unit refrigeration and microcomputer intelligent control system to provide low-temperature cooling water (liquid) flow or low-temperature constant temperature water (liquid) flow to meet the requirements of using cooling water and low-temperature liquid to cool or constant temperature instruments, such as rotary evaporator, electron microscope, low-temperature chemical reactor, electronic energy spectrometer, densitometer, freeze dryer, reactor, etc. It can also directly carry out low temperature and constant temperature experiments on various solvents in the tank.

The low-temperature coolant circulating pump adopts PID microcomputer intelligent control system and fully enclosed refrigeration compressor, which is mainly composed of compressor, condenser, throttle valve, heat exchanger and circulating pump, and can provide low-temperature liquid and low-temperature water bath; The temperature control of the whole range is accurate, and the constant temperature fluctuation reaches 0.5. It can be used for the circulating refrigeration of rotating evaporator, vacuum freeze-drying oven, circulating water vacuum pump, UV spectrophotometer, magnetic stirrer and other instruments, and can carry out multi-functional chemical reaction, biological reaction and drug reaction at low temperature.

Several key points of the application of cryogenic coolant circulating pump in the laboratory:

1. When the liquid circulates outdoors, the user should pay special attention to the firmness of the outlet pipe connection to prevent it from falling off, so as to avoid liquid leakage;

2. The instrument should be cleaned regularly and should not be used for a long time. The medium in the tank should be emptied and wiped clean to keep the workbench and operation panel clean;

3. Before using the low-temperature coolant circulating pump, liquid media (pure water, alcohol, antifreeze) should be added into the tank. The liquid level of the media should not exceed the refrigeration coil in the tank and be 20 mm lower than the workbench.

4. Power supply: 220V 50Hz, 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;

5. Prevent acid and alkali substances from entering the storage tank and corroding the coil and lining;

6. The instrument shall be placed in a dry and ventilated place, and there shall be no obstacles within 300mm around the instrument;

7. Attention should be paid to the setting of high-frequency and low-frequency values in temperature setting, and the setting of high-temperature and low-temperature values should not be reversed;