Rotary vane vacuum pumps are divided into single-stage and double-stage, so what are the differences between single-stage and double-stage? Let's take a look together.
Rotary vane vacuum pump is a ...
Mechanical seal
Traditional roots vacuum pump seal structure and sealing method is relatively simple, in the drive shaft end is generally used framework oil seal, the rotor shaft end is used ...
Vacuum drying is a kind of drying method that materials are placed under negative pressure and heated properly to the boiling point under negative pressure or cooled to make materials solidify and ...