Precleaners

Precleaners or Primary Belt Cleaners are an essential part of any conveyor system. Belt Cleaners help remove bulk material product carry back and prevent it from falling off at various points of the conveyor along the return side of the belt causing various housekeeping and conveyor belt maintenance problems.

Primary Belt Cleaners

These are installed at a positive angle, these primary belt cleaners would be mounted directly against the head pulley below the normal trajectory path of the material.

Function

• The function of the primary cleaner is to”scalp“ the belt of the coarse carry back materials which would otherwise overload the secondary and tertiary cleaners.

• In terms of volume, the primary cleaner is responsible for the removal of up to 75% of the total carry back and is an essential part of the system. It has the added advantage of placing the carry back directly into the flow of material.
• The course materials do not cause a problem of carry back. This is normally because of the fine and sticky particles in the mix of material.
• These fine and sticky particles are removed by the secondary and tertiary cleaners.

Specifications

• Mounted on the head pulley.
• Blade is always narrower than the belt width.
• Ideally, the blade covers just the belt’s material path.
• Removes the big stuff.

Carry back

Carry of Primary belt cleaners can lead to:

• Excessive buildup and wear on conveyor belt idlers and pulleys.
• Conveyor belt misalignment due to the artificial crown created by the carry back.
• Accumulation of material falling off conveyor belt Idlers and structure to the ground or on buildings, vehicles or even people.
• Negative and unsafe work environment.