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Problem solving and daily maintenance of slurry pumps

Published:

Nov 15,2024

Problem solving and daily maintenance of slurry pumps

Slurry pump in the daily work, due to various reasons will inevitably appear abnormal phenomenon or other problems, when the problem can be solved in time with the fastest speed, is every technician should have the quality. According to the experience of maintenance and repair of slurry pump for many years, some faults and abnormal phenomena often encountered in the operation of slurry pump are summarized, and the causes and solutions are summarized. The specific contents are as follows:

1. When the slurry pump fails to absorb water during operation

This situation is generally due to the slurry pump suction pipe or instrument leakage phenomenon, or may be due to the bottom of the slurry pump valve is not opened. When encountering this kind of failure, first check the location of the air leak and give it a blockage in time. Secondly, the bottom valve of the slurry pump is overhauled and replaced.

2, the slurry pump internal abnormal sound, and there is no water fault

This situation is generally due to the slurry pump suction may have air infiltration, making the pump body abnormal noise, while the slurry pump impeller damage or mixed with debris, resulting in the failure of the pump is not water. When encountering this kind of failure, the technical personnel need to adjust the liquid level of the pump pool of the slurry pump and check the impeller at the same time. If it is damaged or aged, it should be replaced in time. In addition, it is necessary to clean up the sundries in the pump body and impeller.

3. Serious vibration of slurry pump shows abnormal condition

This failure is generally likely to be caused by the following problems:

Cavitation may occur in slurry pump.

② The movement trajectory of the pump shaft and the motor is not concentric.

③ The foot bolts of the slurry pump are loose.

The solutions are:

Reasonable adjustment of the outlet valve of the slurry pump to make it run within the specified performance parameters.

The pump shaft and motor shaft of the slurry pump are corrected to be on the same center line.

③ Check whether the foot bolts of the slurry pump are loose, and screw the bolts firmly.

4. The slurry pump pipe is blocked

This kind of failure is generally due to the leakage of air at the inlet of the slurry pump, and it may also be caused by waste in the tube. The solution is to check the leakage part of the population of the slurry pump and add blockage. Secondly, check the waste in the cleaning pipe. If there is too much waste, be sure to shut down the slurry pump before cleaning to avoid safety problems.

5. The pressure gauge of the slurry pump shows pressure but the pump does not produce water.

This failure may be due to a problem in the direction of rotation, the second may be due to the blockage of the impeller flow passage, and the third may be the insufficient speed of the slurry pump. The solutions are as follows: First, correct the direction of rotation of the slurry pump motor to make it correct. Second, remove the joint part of the water inlet pipe and clean it, especially remove the debris in the flow channel. Third, increase the pump speed to within the rated requirements, to ensure the normal operation of the slurry pump.

6, slurry pump shaft overheating failure

This failure may be due to the following reasons: First, the lack of lubricating oil. Second, debris has entered between the shaft and the ball bearing. Third, there is no cooling water in the slurry pump. Fourth, the slurry pump bearing has been damaged. The methods to solve the above problems are as follows: first, add lubricating oil to the slurry pump. Second, remove the debris in the slurry pump. Third, to the slurry pump into the cooling water. Fourth, replace the bearing for the slurry pump.