English (UK) 
简体中文 Core logic of material selection
How to match the belt material according to the material characteristics?
Material characteristics directly determine the applicability of the belt material. When conveying glass, electronic components and other fragile materials, you need to use felt belt or PU belt and other flexible materials to avoid surface scratching; and when conveying ore, building materials and other heavy-duty materials, you should use rubber belt or steel wire rope core tape to withstand high impact and abrasion. High temperature scenarios (such as baked food, casting conveying) need to use temperature-resistant 200 ℃ or more silicone belt or Teflon belt; humid or corrosive environment (such as chemicals, seafood) need PVC belt or PE belt to prevent the material from absorbing water or chemical corrosion failure.
How do environmental conditions affect material life?
Low-temperature environments (such as cold storage) require belts with frost resistance, polyester fibre felt or cold-resistant rubber belts to avoid brittleness and fracture; food and pharmaceutical industries need to comply with FDA standards for food-grade PU belts or silicone belts to ensure that non-toxic and easy to clean. Explosion-proof scenarios (such as dusty environments) need to be configured with conductive rubber belts to reduce the risk of explosion.
How can device parameters be co-designed with materials?
High-speed transmission (>2m/s) requires low elongation wire rope core belts to reduce the risk of slippage; large inclination conveying (>30°) requires high friction materials such as corrugated baffle rubber belts to prevent materials from slipping. If equipped with small diameter roller (<100mm), felt belt or thin PU belt should be used to reduce bending stress damage.
Scenario-based selection of drive modes
How do common drive types match different working conditions?
- drum motor: Compact structure, suitable for light load scenarios with power <45kW and length <150m, but with poor soft-start performance and high impact on the grid.
- Y-motor + torque-limiting hydrodynamic coupling: Cost-effective, can balance the power of multiple motors, suitable for the length of <1500m medium and long-distance conveying, but the speed regulation performance is weak.
- Variable Frequency Speed MotorsSupport stepless speed change and closed-loop control, suitable for large-scale production lines that require precise speed regulation, but the cost is high and the electronic control system is complex.
How do multi-motor drives achieve power balance?
Long-distance conveying (>800m) requires more than 2 motors. When using torque-limiting hydraulic coupling, it is recommended to choose the model with rear auxiliary chamber to reduce the impact of the power grid through delayed start; if you need higher synchronisation accuracy, you can choose CST drive to achieve linear control of the speed curve.
How is drive power scientifically calculated?
The power formula requires a combination of friction coefficient, conveying length, flow rate and lifting height:
p = (c-l-v-q-h) / 6120 - k
(C: Coefficient of friction;L: Conveyor length;Q: Flow rate t/h;H: Lift height;K(: Safety factor 1.2-1.5). Heavy-duty scenarios such as mining require an additional 20% redundant power.
Practical points of layout planning
How to optimise path design under space constraints?
Straight layout is suitable for long-distance horizontal conveying, inclined layout supports maximum 30° climbing; Z-shaped or L-shaped layout can bypass obstacles, but need to control the turning radius ≥ 5 times the bandwidth to prevent material overflow. Mobile or folding models are available for narrow sites, while multi-layer conveyor lines are suitable for high-density sorting in distribution centres.
What key technologies are needed to support the special layout?
- climbing section: Additional baffles or skirts are required when the inclination angle is >15°, and the belt speed is reduced to below 0.5m/s to prevent skidding.
- cornering section30°~180° steering needs to be equipped with special guide rollers, synchronous control of multi-stage belt speed difference ≤ 5%.
- Retractable Layout: When adjusting the length dynamically, it is necessary to strengthen the rigidity of the frame and the response speed of the tensioning device.
How is security integrated into the layout?
The driving part needs to be fully enclosed with protective cover, and the rotating parts are equipped with emergency stop rope (interval ≤ 20m); when the deflection exceeds the bandwidth of 5%, the anti-deviation switch will automatically alarm and stop the machine. Heavy load scenarios require the addition of buffer beds at the loading point to reduce material impact damage.
Professional advice for selection decisions
- Step-by-step verification process
- Step 1: Define the material characteristics (particle size/temperature/corrosivity) → Lock the material type;
- Step 2: Account for load and speed → Match drive power and form;
- Step 3: Mapping site dimensions → planning turning radii and safety spacing.
- Full Life Cycle Cost Control
Priority is given to modular design equipment, with monthly lubrication of the rollers (lithium grease NLGI level 2) and quarterly replacement of the cleaner scrapers; mandatory replacement of belts in the food industry every 2 years to avoid ageing and pollution.
The essence of selection is to balance efficiency and cost: express sorting lines can sacrifice part of their life for high-speed PU belts (2m/s), while heavy-duty lines in mines require wire rope core belts + redundant drives to guarantee continuous operation.
