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Rotary Vane Pumps
Source: | Author:hkw5fd886 | Published time: 2018-12-13 | 612 Views | Share:

Rotary vane pumps for all applications in the low and medium vacuum range

Rotary vane pumps have proven themselves for years in many applications. Coordinated accessories and the selection of ideal equipment make the CHAOYUE Vacuum rotary vane pumps usable for many processes.

The functional principle of the rotary vane pumps

The pump principle of the rotary vane pumps is based on a continual, cyclical change in the suction volume. This is made possible through a rotor eccentrically aligned to the pump housing with movable vanes. 

The required sealing function is guaranteed through the oil. The rotary vane pumps are offered in two configurations. Pumps with a single stage pump system cover an inlet pressure range of 1,000 to approx. 0,5 hPa; those with a two stage serial pump system have an expanded inlet pressure range in high vacuum of up to 5*10-4 mbar.

Operating notes on the process adaption

Ideally, the pumps are operated in a process frame between 100 mbar and a pressure of about a decade above the final pressure. Above 100 mbar, the exhaust oil separator elements clog very quickly through the oily exhaust gas stream. In the final pressure range, the strong dependency of the pumping speed on the suction pressure comes to bear. In this state, no stationary process can be operated.

All models are able to feed a ballast gas, to prevent the accumulation of liquids due to condensing moisture. The use of a gas ballast affects the performance data of the pumps in various ways. 

For example, the pumping speed of single-stage rotary vane pumps will be reduced by the amount of the gas ballast proportion. This will also raise the final pressure. However, due to their design, gas ballast does not affect the pumping speed of two-stage pumps.

Customer benefits

1. Single and two stage designs with pumping speeds of 1.3 to 1,600 m3/h offer maximum flexibility when selecting for the process.

2. Space saving and ideal for system integration.

3. High pumping speed with small dimensions.

4. Proven design concept.

5. Process-safe through integrated high vacuum safety valve.

6. Non-ferrous metal free design offers additional operating safety.

7. Optionally as corrosive gas version as well.

Applications

1. All applications in low and medium vacuum.

2. Backing pump for turbopumps and roots pumps.

3. General laboratory applications.

4. Analytics.

5. Chemical laboratory.

6. Freeze drying.

7. Process engineering.

8. Food industry

9. Plastic industry

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