Detailed explanation of the internal structure of Roots blower: a guide from principle to maintenance
As a common air conveying equipment in the industrial field, the internal structure of Roots blower directly affects work efficiency and service life. Many users often encounter problems such as loud noise, decreased efficiency, or oil leakage during use. In fact, these problems mostly stem from inadequate maintenance due to a lack of understanding of the internal structure. Let's delve into the "heart" structure of Roots blower together!
Core component: rotor system
The most essential part of a Roots blower is the two interlocking three or two blade rotors. These two rotors are like a pair of tacit dancers, rotating in opposite directions with a small gap (usually 0.2-0.4mm) inside the casing. The shape design of the rotor is very particular:
-Gradual profile ensures smooth meshing
-Special coating treatment reduces wear and tear
-Precision dynamic balance testing to avoid vibration
2 Power transmission: gearbox system
The synchronous motion between rotors relies entirely on these high-precision gears:
-Made of alloy steel material with a hardness of C58-62
-Spiral gear design reduces operating noise
-Forced lubrication system ensures gear life
Many users overlook the regular oil change of the gearbox, which is one of the main causes of early failures.
3 Sealing protection: bearings and shaft seals
-Double row angular contact ball bearings bear radial and axial loads
-Maze seal+skeleton oil seal dual protection
-Specially designed oil slinger to prevent lubricant leakage
When an abnormal increase in bearing temperature is detected, it is often a warning signal of poor lubrication or misalignment.
4. Shell and gap adjustment
Cast iron casing is not only a container, but also an important heat dissipation component:
-Internal flow channel optimized by CFD design
-Equipped with inspection holes for easy maintenance
-Gap adjustment bolt can compensate for wear
Regularly checking the vibration of the shell can detect internal abnormalities in advance.
5 Attachment System
The complete Roots blower also includes:
-Inlet silencer: reduces suction noise
-Valve: prevent overpressure operation
-Pressure gauge interface: monitoring working status
-Shock absorber base: isolates mechanical vibrations
After understanding these internal structures, daily maintenance becomes more targeted. It is recommended to check the rotor clearance every 2000 hours of operation and replace the gear oil every 5000 hours, so that your Roots blower can maintain long-term operation!
