Sand washing machine common faults and solutions

Sand washing machine common faults and solutions

The sand washing machine is a washing device for machine sand and natural sand. There are two kinds of screw sand washers and wheel sand washers, which can remove impurities covering the surface of sand and gravel, and destroy the water vapor layer covering the sand particles. The role of efficient cleaning. In the production, the sand washing machine will inevitably encounter various problems. Today, Xiaobian has compiled 12 common fault problems and attached solutions.

1, the machine can not start

The cause of the failure: 1) insufficient voltage; 2) belt slip; 3) gear unit failure; 4) motor damage.

Solution: 1) change the voltage supply; 2) tension the belt; 3) repair the reducer; 4) replace the motor.


2, the machine has noise

The cause of the failure: 1) bearing damage; 2) failure of the reducer; 3) collision of the body of the wheel body.

Solution: 1) Replace the bearing; 2) Repair the reducer; 3) Check and adjust the wheel body.

3, the bearing temperature is too high

Causes of failure: 1) grease is dirty; 2) improper use of grease; 3) bearing damage (generally the first two reasons).

Solution: 1) Replace the grease; 2) The amount of grease must be moderate, not too much or too little; 3) Replace the bearing.


4, the phenomenon of flower turning when washing sand

The cause of the failure: 1) The speed of the spiral sand washing machine is too high; 2) The horizontal axis of the spiral disk is not fixed.

Solution: 1) Adjust the speed; 2) If the speed is adjusted in place and there is still a tumbling phenomenon, fix the horizontal axis.

5, rack vibration

The cause of the failure: 1) the bolt of the coupling bracket is loose; 2) the bolt of the bearing housing is loose.

Solution: 1) tighten the bolts; 2) check and tighten the bolts.

6, the transmission part is noisy

The cause of the failure: 1) insufficient gear lubrication; 2) gear spacing change.

Solution: 1) Add grease; 2) Adjust the anchor bolts of the reducer and tighten.


7, the discharge port is blocked

The cause of the failure: This is the most common problem in the sand washing machine. Most of the reason is that the sand particle size in the slurry of the sand washing machine is too fine, and the single feeding amount suddenly increases, resulting in discharging. Mouth deposit material.

Solution: First stop the feeding, open all the discharge openings to avoid the occurrence of siltation, and clean the sand washing machine with water before working.

8, the gear is vulnerable

The cause of the failure: 1) no timely maintenance; 2) the sand washer shaft and the low speed shaft of the reducer did not reach the specified parallelism.

Solution: 1) Refueling according to the specified time; 2) Adjusting to meet the requirements.

9, the rotor core damage, deformation

The cause of the failure: 1) excessive wear or poor assembly of the bearing, causing the rotor phase to rub, causing damage to the surface of the iron core, thereby causing short circuit between the silicon steel sheets; 2) excessive force when removing the old winding, causing the tooth gap to be skewed and flared outward; 3) The surface of the core is corroded due to moisture and other reasons; 4) The iron core and the base are loosely combined.

Solution: 1) Remove the burr with a tool such as fine boring, eliminate the short circuit of the silicon steel sheet, apply the insulating varnish after cleaning, and heat and dry; 2) trim with a needle-nosed pliers, wooden hoe and other tools to reset the tooth And adding hard insulating materials such as green paper and rubber wood between the gapless silicon steel sheets which are not well reset; 3) sanding the sandpaper and applying the insulating paint after cleaning; 4) tightening the original positioning screws, if the positioning screws In case of failure, the drill can be re-drilled on the frame and the set screw can be tightened.


10, the amount of sand washing is reduced or sand leakage

The cause of the failure: 1) sand net damage; 2) sand net fixing bolts fall off.

Solution: 1) Check the repair or replacement of the sand net; 2) Tighten the bolts.

11, the bearing is vulnerable

Causes of failure: 1) oil or seal damage; 2) long-term lack of maintenance and cleaning.

Solution: 1) Refuel or replace the seal according to regulations; 2) Regularly clean.

12, the bearing parts have noise

The cause of the failure: 1) When the rolling bearing lacks oil, there will be a “bone and bone” sound; 2) when the bearing steel ring breaks, the sound of the discontinuous “stalk” will be heard, or the bearing parts will be worn; 3) the bearing is mixed Sand and other debris.

Solution: 1) Add lubricating oil; 2) When the bearing has cracks, the inner and outer rings are broken or the bearing is excessively worn, the new bearing should be replaced, and the same bearing as the original model should be used. 3) Clean in time.