Rotary vane vacuum pump is an oil-sealed mechanical vacuum pump, which is one of the basic vacuum obtaining equipment in vacuum technology. The rotary vane vacuum pump can discharge the dry gas from the airtight container, as long as there is a gas ballast device, it can also discharge a certain amount of condensable gas. However, it contains oxygen, metal is corrosive, and it is not suitable for chemical reaction of pump oil to extract gas containing particulate dust. There are two types of single-stage rotary vane vacuum pumps and two-stage vacuum pumps.

　　The rotary vane vacuum pump is a positive displacement pump, which operates continuously in the pump chamber through a rotary type, sucks in the gas for compression, and finally discharges it from the exhaust port. The pump is mainly composed of a stator, a rotor, a rotating plate, etc., and the rotor is eccentrically assembled in the stator chamber. There are two rotors in the rotor slot, and a rotor spring is placed between the rotors. The supply and exhaust ports of the stator are separated into two parts by the rotor and the seat.

　　1. Roots rotary vane vacuum pump has low noise, small size, shaft seal technology, oil-free pump structure, environmental protection and no pollution; 2. Automatically adjusts the pump speed to prevent motor overload and overheating; 3. Roots rotary vane vacuum pump pumping time Shorten up to 50%, improve efficiency and save costs; 4. Low operating pressure, high reliability and good stability; 5. Roots rotary vane vacuum pump has a long service life and is easy to maintain.