Detailed steps for adjusting the clearance between impellers of slurry pumps

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• TIME : 2024-12-24

1. Preparation work

Before starting the adjustment, it is necessary to ensure that the pump has stopped running and all safety measures are in place. In addition, necessary tools such as feeler gauges and wrenches need to be prepared.

2. Release the fixed components

Firstly, it is necessary to loosen the bolts that secure the bearing components in order to adjust the position of the impeller. For slurry pumps with open type brackets, it is also necessary to loosen the bracket cover compression nut.

3. Adjust the position of the impeller

Next, it is necessary to move the bearing assembly by adjusting the bolts to adjust the position of the impeller. Specifically, it is necessary to evenly tighten the bearing box compression nut to move the rotor assembly towards the pump head until the disc stops moving. Then, use a feeler gauge to measure the gap δ=a between the bearing box flange and the bracket end face. At this time, the gap between the impeller and the front guard plate is.

4. Adjust the impeller clearance

When adjusting the clearance of the impeller, it is necessary to loosen the compression nut of the bearing box, and then evenly tighten the adjustment screws of the bearing box to move the rotor assembly towards the direction of the motor. Use a feeler gauge to check the gap δ until δ=a+(0.75-1.00) mm (take the larger value for the larger pump). It should be noted that the gap should be uniform and consistent.

5. Fix the axial position of the rotor

After adjusting the impeller clearance to the appropriate position, it is necessary to tighten the bearing box compression nut to completely fix the axial position of the rotor. This step ensures that the impeller does not move unnecessarily during operation.

6. Check the rotation of the impeller

After completing the above steps, it is necessary to recheck whether the impeller can rotate normally. This step can be achieved by manually rotating the pump shaft. If the impeller does not rotate smoothly or cannot rotate, it may be necessary to recheck whether the previous adjustment steps were incorrect.

7. Check if the bolts are tightened

Before starting the pump, it is also necessary to check whether the clamping bolts and adjusting bolts of the bearing components have been tightened. This is to ensure that the pump will not malfunction due to loose bolts during operation.

epilogue

The above steps are compiled based on the information provided in the search results, hoping to help you better understand and execute the adjustment of the impeller clearance of the slurry pump. If you encounter any problems during the adjustment process, it is recommended to consult the relevant operation manual or professional technical personnel in a timely manner.

　　This article originates from https://www.fuyangpumps.com/news/300.html. Please indicate the source when reprinting.

(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)

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