Slurry pump parts - china slurry pump shaft
Slurry pump shaft is an indispensable part of slurry pump operation
The pump shaft is made by forging and finishing, there are two kinds of optical shaft and stepped shaft.
The shaft is equipped with parts such as bearings and axial seals.
What is the role of the pump shaft of the slurry pump?
The pump shaft mainly transmits power and supports the impeller to maintain its normal operation in the working position.
One end is connected to the motor shaft through a coupling, and the other end supports the impeller for rotational movement
When the slurry pump is working normally, the high-speed rotation of the impeller can only be driven by the high-speed rotation of the pump shaft.
Therefore, most of the stress on the shaft is variable stress, and the fatigue damage it receives is the main one.
Working characteristics of slurry pump shaft:
The slurry pump shaft works under the combined action of bending and torsion
So it supports rotation on the one hand and also withstands bending
Only in this way can the rotational motion and torque of the prime mover be transmitted to the impeller
Due to the high-speed rotation of the impeller, the liquid can be continuously sucked into and discharged into the pipeline
How to choose the material of the slurry pump shaft?
According to the working characteristics and the stress of the pump shaft
When choosing materials, use carbon steel and alloy steel with better fatigue resistance
The comprehensive mechanical properties of these materials are better
If the pump speed is not high and the temperature and pressure of the conveying medium are not high
Carbon steel can be used for pump shaft
If the pump speed is high and the temperature and pressure of the conveying medium are high
The pump shaft should use alloy steel with relatively high strength
If it is used to transport acid, alkali and other highly corrosive media
The pump shaft material is generally stainless steel such as lCr18N19 lCr18Ni9Ti.
How to measure the bending of the pump shaft?
Bending of the shaft will cause unbalance of the rotor and wear of dynamic and static parts
Put the small bearing on the V-shaped iron and the large bearing on the roller bracket to make it stable
Put the dial indicator on the dial, the dial rod points to the axis, and slowly turn the pump shaft
If there is a bend, the dial indicator has a maximum and minimum reading per revolution
(The difference between the two readings indicates the maximum radial runout of the shaft bending, called sloshing)
Shaft curvature is 1/2 of sway
The radial runout of the shaft does not exceed 0.05mm in the middle, and 0.02mm at both ends
