Different types of rotary evaporators use rotary evaporators (flasks) to increase the evaporation area and place them in a water bath, while rotating and heating the equipment to uniformly heat the solution in the evaporation flask. Rotary evaporators have gradually become an ideal and necessary instrument for manufacturing and analytical experiments in the chemical industry, pharmaceutical industry, universities and scientific research laboratories for concentration, drying and recovery.
 
There are many types of rotary evaporators. To solve various faults of rotary evaporators, including leakage of rotary evaporators, operators must understand the various components that make up rotary evaporators. Next, let's take a look at the various components of the rotary evaporator!
 

Various parts of the rotary evaporator:

1. Evaporating flask: hold the sample
2. Rotary motor: The rotary motor drives the evaporating flask with the sample, and can set a certain rotation speed;
3. Evaporation tube: The evaporation tube has two functions. First, it acts as a rotating support shaft for the sample, and then through the evaporation tube, the vacuum system sucks the sample out.
4. Vacuum system: used to reduce the air pressure of the rotary evaporator system, there are generally two circulating water vacuum pumps: vertical type circulating water vacuum pump and Desktop Circulating Water Vacuum Pump. Contact us for vacuum pump for rotary evaporator price;
5. Fluid heating pot: There are usually two heating methods, water bath heating samples and oil bath heating samples;
6. Condenser tube: use a serpentine condenser or other condensing agents (such as dry ice and acetone) to condense the sample;
7. Condensation sample receiving bottle: After condensation, the sample enters the receiving bottle.
 
During the use of different types of rotary evaporators, the leakage of rotary evaporators is one of the common types of rotary evaporators. During the use process, attention should be paid to frequent rotary evaporator leak detection. Phenolphthalein test paper can be used to check for leaks in rotary evaporators, because ammonia is alkaline and turns red in the presence of phenolphthalein test paper. When you look, the leak is usually where there is no frost in the evaporator. You can also use soapy water to find the leak at the leak. Halogen lamps and halogen leak detectors can be used to check for leaks in freon evaporators, and soapy water can also be used to find leaks.
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If the rotary evaporator leaks, first check the evaporator pipes to see if there are any traces of oil, because freon and oil are miscible, and if freon leaks, it will leak from the leak. When using a halogen lamp for leak detection, if there is a leakage of Freon, the flame of the halogen lamp will change to green, light green, grass green, purple green, purple, etc. to judge how much Freon leaked. If the flame is dark green or purple, the phosgene in the flame is poisonous and cannot be checked by this method for a long time.

Various troubleshooting of rotary evaporator:

1. The motor does not turn

Methods to take: Re-insert the plug and connect the disconnection. Update the motor fuse or confirm that the power supply is normal. Update the circuit board or electrical control box. Connect the ground wire or change the work location. Exclude according to the inverter manual.

2. The bathtub is not heated

Method to take: Check the power supply 220V. Replace heating coil. Replace solid state relay or relay board. Change the thermostat. Check probe wiring or update probe.

3. Warm up the bath

Method to take: Change the temperature controller. Replace solid state relay or relay board. Change the probe or temperature controller.

4. The vacuum cannot be pumped up

Methods to take: empty the solvent and test with an empty bottle. Change the oil (water) of the vacuum oil pump, clean and overhaul. Detect and eliminate section by section along the vacuum pipeline. To reassemble, clean the grinding mouth of the glass wool sandwich panel, apply vacuum silicone grease, and align and tighten the flange mouth.
 
Correct installation steps and correct operation methods can reduce the frequency of failures of different types of rotary evaporators. Please take care and maintain your experimental equipment such as rotary evaporators in time.
 
ZZKD not only sells rotary evaporators of various capacities from stock for a long time, but also can provide you with vacuum pump for rotary evaporator price, ZZKD has been providing you with after-sales service.
 
If you need a quotation for a rotary evaporator, please contact us in time!