High Pressure Blower Shaft Break Reasons

The high-pressure blower is mainly used for combustion deoxidizer, cigarette filter forming machine, electroplating bath liquid stirring, atomization dryer, screen printing machine, photo plate making machine, injection molding machine, automatic feeding dryer, liquid filling machine, powder filling machine, electric welding equipment, film machinery, paper transportation, dry cleaning clothes, washing, drying, conveying powder, air dust removal, gas transmission, feeding, collection, environmental protection, water treatment etc.

After the blower was running for a period of time, the motor shaft was broken. Why does the shaft twist off? When we carefully observe the cross section of the broken shaft, we will find that the outer ring of the cross section is brighter, and the color of the cross section becomes darker toward the shaft center. This phenomenon is mostly caused by the incorrect assembly between the motor and the blower.

When the concentricity of the assembly between the motor and the blower is correct, the shaft bears only the rotational force (torque), and it runs smoothly without pulsation. When it is not concentric, the shaft also bears the radial force (bending moment) from the input end of the blower. The action of this radial force will force the shaft to bend, and the direction of the bend will continue to change with the rotation of the shaft.

If the concentricity error is large, the radial force will increase the local temperature of the shaft, and its metal structure will continue to be destroyed, which will cause the shaft to break due to local fatigue. The greater the error of the concentricity between the two, the shorter the time for the shaft to break. If this radial force exceeds the radial load that the input end of the blower can withstand, the input end of the blower will be deformed or even broken or the input end support bearing will be damaged. Therefore, it is very important to ensure concentricity during assembly!

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