_ rotary-vane vacuum pump working principle and application field

rotary vane vacuum pump must be installed in the stator and rotor slot of two or more rotor blades, the rotor and the pump shell surface tangent or intersection, the rotor rotating rotor blades by centrifugal force, the rotor blades, some stretch near the cylinder wall, separate inlet and outlet and periodically to breathe in, and make the air intake cavity in the body of container periodically to reduce emissions and compressed gas, borrow the exhaust valve discharge waste gas and oil pressure and vacuum.

double-stage vacuum pump is composed of two stage series single stage, when the inlet pressure high, big, medium-sized ordinary pump, secondary can exhaust at the same time, low inlet pressure, the volume is low, then exhaust pump. The change of the pump is the use of inspiratory capacity to extraction, its nominal pumping speed can be according to the inspiratory capacity geometric size calculation.

when the required final absolute pressure is very low, the use of vacuum pump. The pump can continuously connected to the closed container to empty, and it can run continuously for a long time under atmospheric pressure. The pump exhaust is not filter, therefore, special filter can be used for flue gas emissions.

these vacuum pump working principle is similar to the lubrication pump. However, in this case, the stator submerged in lubricating oil also has sealed air loss function. This type of pump pressure level than any other rotary vane vacuum water pump. The pump is equipped with a gas ballast system, to avoid the water vapor condensation.

this kind of pump can be made by a single rotor system Stator groups, known as the single stage; Or they can be made by series connection of two rotor system Stator group, so the first set of outlet connected to a second group of air intake system. The latter is called the dual phase.

the main application areas include: the refrigeration and air conditioning systems, laboratory applications, freeze drying, spectrometric and overspeed centrifugal. Special rotary vane vacuum pump parts can be used in the connection of various of system components.