How to reduce the wear of slurry pump?
It is very necessary to reduce the wear of slurry pump, which can effectively reduce the cost of mineral washing. From the design and manufacture of pumps to the application of pumps in production, there are problems and requirements that should be paid attention to. In summary, there are the following points,
1. The design method should conform to relevant theories
In the hydraulic design, because of the solid-liquid mixture transported by the pump, the characteristics of the solid-liquid mixture should be considered in the design, and the two-phase flow theory should be used for the design. At the same time, we should refer to the new scientific research and theory to make the body at the flow passage part more similar to the slurry movement track, so as to reduce the impact and friction of solid particles on the slurry pump, so as to reduce the wear.
2. Improve the structure
Reasonable parameters, structure design and the selection of blade inlet diameter have great influence on wear capacity and efficiency. For the parts easy to wear in the slurry pump, in addition to the improvement in the theoretical design, the structure should also be improved. The components should be made into replaceable parts as far as possible. At the same time, the convenience of replacement should be better considered in the structural design.
3. Do a good job in daily maintenance
3.1 keep the equipment clean, dry, free of oil and leakage
3.2 check whether the operation sound of the pump is normal, whether there is vibration and leakage every day, and timely handle the problems found.
3.3 check whether the oil level in the bracket is appropriate every day. The correct oil level is near the oil level line, which should not exceed 2mm.
3.4 It is strictly forbidden to work when the slurry in the pool is evacuated, because the slurry pump will not only vibrate violently but also affect the service life of the pump.
3.5 Each pump is marked with the size of the maximum solid particles allowed to pass through. It is strictly forbidden to enter metal objects and large solid particles exceeding the allowable passing size in the pump. Moreover, it is strictly prohibited to enter the pump with rubber, cotton yarn, plastic and other flexible materials, so as to avoid damaging the flow passage parts and blocking the impeller flow channel, resulting in the pump can not work normally.
3.6 check whether the pressure and flow of shaft seal water and cooling water are appropriate. The method of checking the opening degree of shaft seal water valve or detecting the temperature of stuffing box can be adopted. When the temperature is high, the water supply is insufficient. For the pump with grease lubrication packing, oil should be added 1-2 times a day to ensure that the slurry pump is in good lubrication state.
