Common Problems and Solutions for Sieving Machines

(1) Gearbox overheating or smoking

Cause of Incident: Insufficient lubricating oil in the gearbox, poor lubrication, and substandard oil quality. Overweight application. Common fault within the transmission system body.

Exclusion Methods: Improve the refinement of oil or change the engine oil. Manipulate the load or improve the design of the transmission system. Analyze and address the issue in depth under categories such as "burning electricity," "plywood," and "thermoplastic deformation."

(2) The gearbox experienced vibration and noise

Cause of Occurrence: Poor tooth surface. Side gaps are suitable, but there is movement in the shaft diameter. Gear shaft precision deviation.

Exclusion Methods: Adjust the surface. Adjust the lateral clearance, eliminate vibration. Replace the gear shaft.

Gear shaft tooth crack or breakage

Cause: Poor tooth surface. Side clearance is appropriate, but there is movement in the shaft diameter. Gear shaft precision deviation.

Approach: Adjust the surface. Tweak side gaps, eliminate wobble. Replace gear shaft.

(4) Thermal Plastic Deformation of Transmission Gears and Plywood

Cause of Occurrence: Poor lubrication, low oil, diaphragm vacuum pump. High-speed overload application.

Exclusion Methods: Clean the car's fuel tank, change the engine oil, and add fuel. Adjust operating speed, load, or improve the design.

(5) Severe gap corrosion and detachment of transmission gears

Cause of the Incident: Excessive clearance in the rolling bearing, with severe wear and damage. Poor material or heat treatment process. Overweight application.

Exclusion Methods: Repair or replace the rolling bearing. Improve materials, enhance heat treatment processes. Handle loads.

(6) The transmission gear is severely worn out.

Cause of Incident: Poor sealing of safety protection. Poor quality oil, with residue in the oil. Poor material quality.

Exclusion Methods: Enhance safety protection sealing. Clean and change the engine oil. Use wear-resistant materials.

(7) Abnormal heating and noise issues with roller bearings

Cause of the Incident: Poor finishing, severe wear due to insufficient oil. The foot bolts on the flange at the end of the horizontal axis were loose and stripped. Misalignment and increased side clearance. The screw thread on the top adjusting cap was stripped.

Exclusion Method: Immediately apply oil to increase the remaining fuel in a short time. Re-torque the ground bolt. Dismantle and repair. Resolve the bridge shaft, re-thread, and replace the nut.

(8) Pulverizer blade broken or ejected, causing body to shake

Cause of Incident: Poor leaf quality and inconsistent net weight. The foot bolts securing the leaves became loose, resulting in misalignment during installation, causing the leaves to tilt upwards or downwards.

Exclusion Method: Replace the blades, weigh and install evenly. Inspect the base bolts, add sealing washers, and tighten the base bolts. Adjust the installation position.

(9) The electrical flow of the separator suddenly increased

Cause of Incident: Bottom or top roller bearing overheated. Expansion ring deformation, causing breakage and jam. Solid debris infiltrated during feeding, blocking the upper entrance of the material disk. The large bolt below the vertical shaft loosened, lowering the material disk hub.

Exclusion Methods: Inspect and replace rolling bearings. Check and replace expanding rings. Clean away debris. Tighten the large bolt.

Frequently Asked Question: Vibration of Centrifugal Fan with Base-mounted Bearing.

(10) The two shafts of the centrifugal fan and the motor are not concentric.

Cause of Incident: Unbalanced centrifugal impeller. Inadequate location for the intake valve of the centrifugal fan's inlet and outlet. Insufficient basic bending stiffness for rigidity. Foot screws loose. Accumulated dust on the centrifugal impeller.

Exclusion Method: Seek harmony in the unity of two axes. Align the balance. Adjust the intake valve section. Enhance the basic structure, increase bending stiffness. Inspect the tightened foot bolts. After shutdown, open the maintenance door for dust removal.