Roots blowers can be roughly divided into single-stage and two-stage blowers according to their different working methods. Among them, there is only one compression stage blower, which we call a single-stage blower, and two single-stage blowers are connected in series to compress the gas twice in a row. We call it a two-stage blower.

  1.Divided by rotor: two-leaf roots blower and three-leaf roots blower；

  2.According to the sealing type: various types of blowers such as labyrinth seals, packing seals and mechanical seals；

  3.According to the cooling method: air-cooled roots blower, water-cooled roots blower, etc.；

  4.According to the type of medium: air, gas, hydrogen, sulfur dioxide roots blower, etc.；

  5.According to the transmission method: direct connection and belt connection Roots blower, etc.；

  6.According to the structure type: vertical, horizontal, intensive roots blower, etc.；

  7.According to the purpose: vertical kiln, oxidation, aeration roots blower, etc.；