The screw classifier is a commonly used equipment for beneficiation. The spiral classifier machine is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the speed of precipitation in the liquid is different. Today, I will mainly introduce the maintenance methods of the spiral classifier and the solutions to common faults.
Maintenance method of spiral classifier
1. All the oil in the reducer shall be replaced with new oil within one week of the load operation. Replace it every six months thereafter. Check the oil level every shift and add it in time.
2. The remaining lubrication points are lubricated with calcium-based or sodium-based grease. Twist the oiling cup once every shift.
3. The lubricating grease of the large shaft component bearing is cleaned and replaced once a year.
4. The spiral lining should be replaced in time after it is worn out.
5. Frequently check whether the bearing bushes, bearings, and sealing rings of the lower support or intermediate frame are worn out and whether the bearing bushes are damaged, and replace the parts in time.
6. Before stopping the screw classifier, stop supplying materials first, and then stop the operation after the classification of the materials is completed.
7. Bearing lubrication Every 4 hours, a manual dry oil pump is used to inject high-pressure oil into the bearing to maintain the sealing performance of the bearing.
Common faults and solutions of spiral classifiers
1. The spiral classifier has a broken shaft.
Reasons: The amount of returned sand is fluctuating large and small, the load is uneven; the quality of the shaft material is poor; the installation is not correct or the shaft is bent.
Solution: Weld or change the shaft.
2. Spiral blades or curved spokes
Reasons: the amount of returned sand is too large and the amount of returned sand is blocked; when the machine is started, too much sand is returned; the screw lift is not enough before driving.
Solution: Correct or replace the spiral blades and spokes.
3. Sand enters the lower shaft head of the spiral classifier machine
Reason: The flange or packing plug is too loose; the cushion is not tight.
Solution: Find a technician to repair the shaft head.
4. The lifting gear is idling when the spiral classifier descends
Reason: There is too much sand in the groove of the spiral classifier, which causes the lifting gear to rotate.
Solution: clean the sand in the tank.
5. Lifting rod vibration
Reason: The shaft head is bent; sand enters into the lower shaft head; the shaft head ball is worn out.
Solution: Clean and replace the shaft head in time.
The above are the maintenance methods of the spiral classifier and the solutions to common failures. Paying attention to the daily maintenance of the machine can not only extend the service life of the machine but also avoid sudden damage to the machine and affect work efficiency. If you want to know more about mining machinery, please consult us online.
