A Brief Discussion on the Roots Blower Sealing Forms and Applications of Roots Blowers

The sealing of Roots blowers includes the sealing of the drive shaft extension, the tail oil seal of the bearing seat, and the shaft seal of the wall plate.

 The primary purpose of the wall plate shaft seal is to prevent gas leakage.

 The other two areas primarily prevent oil leakage, 

though they may sometimes also require gas sealing. 

Structures that primarily seal gas are typically referred to as gas sealing devices, while those solely for oil sealing are referred to as oil sealing devices.

 Common sealing devices for the wall plate shaft seal in Roots blowers include labyrinth seals, packing seals,

 expansion ring seals, and mechanical seals. For the drive shaft extension, common sealing devices include skeleton oil seal groups or mechanical seals.