Troubleshooting Guide for Rice Huller Rubber Rollers
Comprehensive troubleshooting guide for rice huller rubber rollers. Covers common faults causes (e.g., jamming, wear, vibration) and solutions, technical parameters, and maintenance tips for agricultural machinery efficiency.
| ault | Causes | Solutions |
|---|---|---|
| Rubber Roller Jamming | 1. Uneven material feeding 2. Excessive impurities in raw grain 3. Direct impact of falling grains 4. Hard debris trapped between rollers 5. Uneven inflow of returning rice grains | 1. Adjust chute flatness and remove debris 2. Enhance cleaning and maintenance 3. Optimize chute angle 4. Inspect chamber daily and clear debris 5. Balance grain inflow |
| Uneven Roller Diameter | 1. Misaligned roller axes 2. Uneven material flow 3. Uneven roll gap 4. Material bias toward one side 5. Uneven pressure weights | 1. Fine-tune axle alignment 2. Adjust material flow and chute calibration 3. Equalize roll gap 4. Balance grain inflow 5. Equalize pressure weights |
| Excessive Vibration | 1. Axial deformation 2. Roller imbalance 3. Wear-induced deformation | 1. Pre-operation shaft inspection 2. Conduct static balance tests 3. Adjust gap or machine rework |
| Accelerated Wear | 1. High linear speed difference 2. Excessive pressure 3. Impurities in grain 4. High moisture content 5. Incorrect roller hardness | 1. Maintain speed difference ≤5–6 m/s 2. Reduce pressure or adjust gap 3. Use high-abrasion-resistant rollers 4. Optimize grain moisture 5. Select appropriate hardness |
| Low Hulling Efficiency | 1. Roller surface irregularities 2. Excessive gap 3. High speed difference | 1. Machine grinding or replacement 2. Adjust gap to 0.5–0.8 mm 3. Control speed difference |
| Edge Curling | 1. Misaligned installation 2. Roller length mismatch | 1. Replace matched rollers 2. Replace defective rollers |
| Surface Patterns | 1. Material flow issues 2. Roller friction 3. Gap misalignment | 1. Optimize material flow 2. Adjust parallelism 3. Maintain gap consistency |
| Roller Detachment | 1. Poor roller quality 2. Extended storage | 1. Discontinue use immediately 2. Replace rollers |
| Blistering/Peeling | 1. Low-quality materials 2. Aging 3. Prolonged friction | 1. Replace rollers 2. Discontinue use 3. Adjust gap |
| Deformation | 1. Improper storage 2. Imbalanced static calibration 3. Overheating 4. Continuous high-load operation | 1. Replace rollers 2. Rebalance or machine grinding 3. Use high-temperature-resistant rollers 4. Select harder rubber |
| Rapid Wear | 1. High speed difference 2. Excessive pressure 3. Contaminated grains 4. High temperature 5. Over-hard rollers | 1. Adjust speed 2. Reduce pressure 3. Use high-abrasion rollers 4. Optimize hardness |
| Surface Waves | 1. Blocked grain flow 2. Incorrect speed/gap settings 3. Loose rollers 4. Imbalance | 1. Clear flow channels 2. Adjust speed/gap 3. Tighten rollers 4. Rebalance |
| Overheating | 1. Poor ventilation 2. High pressure 3. Excessive impurities 4. Roller contact | 1. Improve airflow 2. Reduce pressure 3. Screen grains 4. Adjust gap |
| Midline Deformation | 1. Uneven material distribution 2. Worn chute 3. Damaged gates 4. Roller misalignment | 1. Optimize feeding 2. Replace chute 3. Install new gates 4. Equalize roller pressure |
