Equipment

Belt Cleaners

Primary and secondary belt cleaners for controlling carryback on coal handling conveyors.

Overview

What this equipment does

Belt cleaners remove material that adheres to the conveyor belt after it discharges, preventing carryback that would otherwise build up on idlers, fall off as spillage along the return run, and shorten belt and component life. A typical coal conveyor uses a primary cleaner at the head pulley face followed by one or more secondary cleaners further along the return. Tensioning systems and blade compound choice are central to performance.

At a Glance
Equipment Type
Conveyor belt cleaner
Material Handled
Belt carryback (residual coal, fines)
Capacity Range
Sized to belt width
Where used

Common Applications

  • Coal handling conveyors
  • Transfer stations
  • Underground conveyors
  • Stockyard conveyors
Specifications

Technical Specifications

Belt Cleaners
Specification Value Unit
Belt Width 500–2,400 mm
Cleaner Stages 1–3 per conveyor
Blade Materials Polyurethane, tungsten carbide, rubber
Tensioning Spring, pneumatic, or hydraulic
Mounting Head pulley face, return run
Selection guide

Selection Factors

  • Belt width and speed
  • Material moisture (sticky vs free-flowing)
  • Acceptable carryback level
  • Blade material compatibility with belt cover
  • Access for blade replacement
Maintenance

Maintenance and Wear Notes

Belt cleaners require routine tension checks and blade replacement. Worn blades lose contact pressure and stop performing; over-tensioned blades wear belt covers. Most operations track blade hours and replace on a schedule that matches observed wear.

Frequently Asked

FAQ

What is the difference between primary and secondary belt cleaners?

A primary belt cleaner sits at the head pulley face and removes the bulk of carryback. Secondary cleaners are mounted further along the return run and remove finer residual material the primary cleaner missed.

How does belt cleaner tension affect performance?

Cleaner tension determines blade-to-belt contact pressure. Too little tension allows carryback to pass; too much accelerates belt cover wear. Pneumatic and hydraulic tensioners maintain constant force as blades wear, while spring tensioners need periodic adjustment.

What blade material is right for coal?

Polyurethane blades are the default for coal handling: good wear life, gentle on belt covers, low cost. Tungsten carbide tips extend life on abrasive duty. Rubber blades are used as secondary cleaners and on fragile belt covers.

Will belt cleaners damage the belt?

Properly selected and tensioned cleaners do not damage the belt. Damage occurs when blade compound is harder than the belt cover, when tension is excessive, or when worn blades are not replaced and tension is added to compensate.

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