What problems are easily caused by improper use of the slurry pump, and how to solve it to make the slurry pump operate normally?
1. The long-term use of the slurry pump causes the surface of the cooler tube wall to scale, so that the heat transfer is poor; the amount of cooling water is small or no cooling water is added. Therefore, always check whether the bearing cooling water pressure and flow are appropriate. Generally, the slurry pump cooling water pressure is 0.05～0.2MPa, and the cooling water flow is 1～3m3/h. Replace the scaled cooler in time, and turn on the cooling before the pump starts. The water adjusts the pressure to the specified value, and regularly checks the bearing temperature rise (35°C), and the high temperature should not exceed 75°C.
2. During the use of the slurry pump, the seal fails due to the wear of the packing, the slurry leaks along the shaft seal, and the slurry instantly fills the curved surface of the semicircular positioning hole connecting the bracket and the rear pump casing, and the slurry discharged from the discharge port cannot pass through the stopper. The seal at the water pan penetrates into the oil sump, causing bearing damage. In daily maintenance, attention should be paid to regularly detecting the leakage of the shaft seal water. When the leakage increases, the bolts of the packing gland should be adjusted, and the packing and the failed O-ring seal should be replaced in time to prevent the leaking slurry from sealing along the shaft from the water retaining plate. Penetrate into the bracket oil pool.
3. The lubricating oil is not clean, causing bearing friction, wear, heating, vibration and other problems. Lubricating all parts of the bearing can reduce friction and wear. The quality of the lubricating oil should be checked regularly to allow dust or oil aging and deterioration. The lubricating oil should be adjusted in strict accordance with the pump instruction manual. It should not be too much or too little. If the oil is too much, it will not take away most of the friction heat inside the bearing, which will not provide effective heat dissipation and increase the temperature rise of the bearing; If there is little oil, it will cause the bearing oil film to rupture and dry friction and burn the bearing.
These small problems of the slurry pump will cause a big impact over time. It should be inspected and repaired in time to ensure the normal use of the slurry pump.