How it works
Powerful and robust with proven rotary vane technology. The cylinder has a rotor with three blades, which are centrifugally mounted. Due to centrifugal force, these blades slide out and form a chamber between themselves and the cylinder.
The pumped medium is trapped in three chambers. During the rotation, the chamber volume decreases continuously. Therefore, the pumped medium is compressed and transported to the outlet.
The vacuum pump uses circulating oil lubrication for continuous operation. The advanced oil mist separator can effectively separate the sealing oil and the pumping medium to ensure the effective circulation of the oil.
After the vacuum pump is shut down, the check valve prevents the pumped medium from flowing back into the vacuum process.

Ideal solutions for the following industries, where Leno bipolar vortex vacuum pumps play an important role:
■ In the industrial field, this pump is used in vacuum coating, chemical/pharmaceutical, automotive industry, metallurgy/vacuum furnace, light bulb/energy-saving lamp, cathode ray tube, environmental engineering, air conditioning/refrigeration, power engineering, mechanical engineering and other industries.
■ In the field of food preservation, two-stage oil vane vacuum pumps are also used in vacuum pre-cooling technology to achieve the purpose of fruit and vegetable preservation.
■ It is also used in beverage industry, die-casting industry, food packaging and processing, metallurgy industry, plastics industry, pneumatic conveying, printed circuit board testing, printing industry, chemical research laboratories, textile industry, transportation and loading and unloading and other fields.
■ Due to its powerful air extraction capacity and stable performance, the two-stage oil vane vacuum pump is widely used in various industries and fields that require a vacuum environment, including but not limited to industry, food preservation, beverages, die-casting, food packaging and processing, metallurgy, plastics, pneumatic conveying, printed circuit board testing, printing, chemical research laboratories, textiles, transportation and loading and unloading, etc.
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