How Does a Roots Vacuum Pump Work?

The water ring vacuum pump closed-loop unit is a vacuum pump unit that is derived from the water ring vacuum pump and is equipped with auxiliary components such as an air-liquid separator, heat exchanger, valves, instruments, and piping. The main functions of this unit are: 

1. Keep the working fluid of the water ring vacuum pump circulating continuously within the gas-liquid separator and the pump chamber to reduce wastewater discharge. 

2. The gas can be condensed and recovered through the exhaust port or directly enter the tail gas treatment unit. 

3. The extracted solvent can be used as the working solution for recycling, which is beneficial for environmental protection and helps achieve the goal of reducing emissions. 

4. Particularly suitable for processes where the extracted medium contains organic solvents, toxic substances, etc.

Principle description: The gas is drawn into the vacuum pump through the N1 intake port, compressed and carrying some working fluid. It is then discharged to the vapor-liquid separator through the exhaust pipeline. In the separator, the vapor and liquid are separated. After being compressed to the exhaust pressure, the gas is discharged through the exhaust port of the separator to the spiral-wound heat exchanger. The volatile and condensable gas that is easy to evaporate is condensed by the spiral-wound heat exchanger and then enters the recovery tank. The non-condensable gas is discharged through the N2 exhaust port from the system. The liquid flows from the separator to the heat exchanger through the liquid supply pipeline and is cooled before returning to the vacuum pump. The design purpose of this unit is: By condensing and recovering at the exhaust end, it can effectively condense and recover volatile gases, reduce exhaust emissions and generate economic value. The working fluid circulates continuously in the vapor-liquid separator and the pump chamber, reducing wastewater discharge and being beneficial for environmental protection to achieve emission reduction. Thus, it can save a large amount of cost for users' water ring vacuum pumps in wastewater treatment.