Typical application areas for vacuum pumps in Roots: Extend the operating range of oil-sealed mechanical pumps at lower inlet pressures

Roots vacuum pump refers to a variable capacity vacuum pump in which the pump is equipped with two leaf-shaped rotors that rotate synchronously in opposite directions, and there is a fine gap between the rotors, the rotor and the inner wall of the pump casing and do not contact each other. Roots pump is a vacuum pump without internal compression, usually the compression ratio is very low, can not be pumped alone, need to be equipped with a backing pump.
Roots pump has the characteristics of fast start-up, low power consumption, low maintenance cost, large pumping speed, high efficiency, and insensitivity to the small amount of water vapor and dust contained in the pumped gas. Roots pumps have a large pumping rate in the pressure range of 100-1 pa, which can quickly remove suddenly released gas.

Based on these characteristics, Roots vacuum pump has been tested for a long time in petroleum, chemical, plastic, pesticide, turbine rotor dynamic balance, aerospace space simulation and other devices; Typical applications also include vacuum metallurgy, chemicals, food, pharmaceuticals, etc.
Roots pumps effectively extend the operating range of oil-sealed mechanical vacuum pumps at lower inlet pressures. Roots pumps are particularly suitable for use in vacuum systems that require large pumping speeds under low inlet pressures, such as vacuum drying of power transformers, power capacitors, power transformers, vacuum impregnation treatment, vacuum heat treatment, exhaust of vacuum smelting, pre-extraction of vacuum coating equipment, extraction of large test wind tunnels and exhaust of lighting production lines.

Because the use conditions of the roots pump are not too harsh and the pumping speed is large, it can be widely used in fine chemical production. Specific application areas include vacuum casting, vacuum melting, vacuum degassing, vacuum distillation and vacuum drying in the vacuum coating industry and chemical and pharmaceutical industries.

In the food industry, the application of roots pumps in the freeze-drying process is more mature, which is also a better food processing technology recognized by the world at this stage.