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Difference between revisions of "Belt Scrapers"
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Installed after the point where the belt leaves the head (discharge) pulley and or anywhere on the return side of the belt where it can be cleaned and maintained effectively. | Installed after the point where the belt leaves the head (discharge) pulley and or anywhere on the return side of the belt where it can be cleaned and maintained effectively. | ||
==Function, Cleaning and Care== | |||
*Primary belt cleaners | |||
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. | |||
*Secondary Belt Cleaners | |||
The function of the secondary cleaner is to remove fine and sticky materials from the belt after the primary cleaner has removed the course carry back. | |||
In terms of volume removed, the secondary cleaner does not appear to be as effective as the primary cleaner. However, this does not ring true when looking at the mess around a conveyor or the build-up on return rollers. | |||
It is the fine and sticky material that is responsible for the mess as it is particularly hard to remove. In many cases, it is necessary to apply water to the belt in front of the secondary cleaner to achieve the required result. | |||