How to choose vortex vacuum pump and rotary vane vacuum pump for CNC equipment

First, let’s compare the differences between vortex vacuum pumpsand rotary vane vacuum pumps.

Vortex vacuum pumps and rotary vane vacuum pumps are two different types of vacuum pumps. They have some differences in working principles, structures and applications.

• working principle:

Vortex vacuum pump: Also known as a vortex vacuum pump, it creates a vacuum by utilizing the principle of vortex flow. There is a rotor in the vortex pump, which generates vortex by rotating at high speed, which draws the gas into the inlet and discharges it through the pump. This type of pump does not require lubricating oil, making it suitable for some applications that are sensitive to oil contamination.

• structure:

• application:

Overall, the choice between a vortex or rotary vane vacuum pump depends on the specific application needs, including vacuum requirements, susceptibility to oil contamination, and other performance and cost considerations.

In CNC machine tool applications, the choice of vortex vacuum pump or rotary vane vacuum pump usually depends on the specific processing requirements and machine tool performance requirements. The following are some advantages and disadvantages of the two in CNC machine tool applications:

Vortex vacuum pump:

advantage:
There is no need to use lubricating oil, so oil vapor will not be generated, making it suitable for some processing environments that are sensitive to oil pollution.
The structure is relatively simple and the maintenance cost is low.
It can provide a relatively clean vacuum environment and is suitable for some applications that require high processing accuracy.

Disadvantage：
Generally, the vacuum degree is lower than that of rotary vane vacuum pumps.
For large flow and high vacuum requirements, it may not be as good as a rotary vane vacuum pump.

Rotary vane vacuum pump:
advantage:
It can provide high vacuum degree and is suitable for some processing scenarios that require high vacuum degree.
Suitable for situations requiring larger flow rates, such as large CNC machine tools.

Disadvantage:
Lubricating oil is often required and may produce oil vapor, making it unsuitable for some applications, especially processing environments that are sensitive to oil contamination.
The structure is relatively complex and the maintenance cost is high.

Factors to consider in CNC machine tool applications:

Processing requirements: If the processing requirements are very sensitive to oil contamination and the vacuum requirements are not particularly high, a vortex vacuum pump may be more suitable.

Vacuum degree requirements: If the processing process requires a higher vacuum degree, especially in processing that requires fine workpiece surfaces, a rotary vane vacuum pump may be more suitable.

Maintenance costs: Scroll vacuum pumps generally have lower maintenance costs because they do not require lubricating oil, while rotary vane vacuum pumps may require more frequent maintenance.

Cost considerations: Scroll vacuum pumps are generally relatively low in cost and may be suitable for some cost-sensitive applications.

Overall, the choice of vortex or rotary vane vacuum pump should be based on a comprehensive evaluation based on specific processing needs, environmental conditions and cost considerations.