Zhengzhou Dragon Pump Co., Ltd. Reminder: impeller and large mouth damage is the most common pump problems. This damage is mainly manifested as wear and tear, is the mechanical products will be used for a long time problems. Therefore, the pump to use for some time (usually six months or one year) after the need to do some targeted maintenance and replacement.
Impeller and the big mouth ring wear, causing the gap with the change, when the gap exceeds a certain value, the pump performance decreased dramatically, accompanied by large vibration and noise, this time must be repaired. The interval of such damage is generally proportional to the pump running time, generally can be planned preventive maintenance.
In general, the pump is located in the middle of the impeller is most likely to wear (the first impeller material alloy steel, the other impeller is made of cast iron), and heavy ring wear heavy impeller inlet diameter wear light, this time, can The impeller entrance in the lathe on a little cutting, or abrasive polished smooth, and then repair the impeller inlet diameter, the replacement of the new ring, to meet the original requirements. In order to improve the maintenance efficiency, in the repair process to match the ring and the impeller to mark, to avoid confusion and increase maintenance.
When the impeller inlet diameter wear large, can be surfacing, plating and spray repair repair methods, surfacing, should be used homogeneous welding electrode surfacing, welding after welding must pay attention to the prevention of white-hole organization Appears, and then lathe turning or grinding on the grinding machine to achieve the required size. When the outer diameter of the impeller entrance serious wear or fracture, this time has lost repair value, you can replace the new pieces.
Impeller and the big mouth ring wear, causing the gap with the change, when the gap exceeds a certain value, the pump performance decreased dramatically, accompanied by large vibration and noise, this time must be repaired. The interval of such damage is generally proportional to the pump running time, generally can be planned preventive maintenance.
In general, the pump is located in the middle of the impeller is most likely to wear (the first impeller material alloy steel, the other impeller is made of cast iron), and heavy ring wear heavy impeller inlet diameter wear light, this time, can The impeller entrance in the lathe on a little cutting, or abrasive polished smooth, and then repair the impeller inlet diameter, the replacement of the new ring, to meet the original requirements. In order to improve the maintenance efficiency, in the repair process to match the ring and the impeller to mark, to avoid confusion and increase maintenance.
When the impeller inlet diameter wear large, can be surfacing, plating and spray repair repair methods, surfacing, should be used homogeneous welding electrode surfacing, welding after welding must pay attention to the prevention of white-hole organization Appears, and then lathe turning or grinding on the grinding machine to achieve the required size. When the outer diameter of the impeller entrance serious wear or fracture, this time has lost repair value, you can replace the new pieces.
Maintenance process, in addition to pay attention to external wear, but also should pay attention to the impeller inside the plug. As the mine water will be a lot of impurities, such as small wood, bark, small coal and so on. Often stuck in the impeller flow path, affecting pump flow and efficiency, this situation occurred in the first and second impeller, must be removed. In the repair process to ensure that several gaps for the size of the mouth ring gap is 0.4 ~ 0.5 mm, the export of water and guide the import of the wing through the gap with the gap of 0.8 ~ 1.2 mm, balance plate tail set of outer and water jacket The gap between the internal and external channels is 0.8 ~ 1.0 mm.
Manufacturers recommend: Shenlong stainless steel fountain submersible pump
Keywords:Maintenance knowledge, pump impeller, wear maintenance
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