We supply sweeping machines that use an overthrow sweeping system. So what you might say, well let me explain.
In the illustration you can see how our Brava sweeper is arranged internally. Notice the brush rotation is against the direction of travel and that the collected dirt and debris are thrown over the brush into the rear-mounted hopper. Now this has many advantages over the forward throw system used by other manufacturers.
OVERTHROW SWEEPING SYSTEM:
• The dirt is thrown from high to low, so the hopper can be deeper and have a greater capacity.
• The hopper can be filled to 80-90% of its capacity.
• Collection of light and heavy, small or bulky dirt is easy and equally effective.
• Perfect visibility of the work area because the hopper is at the rear not the front.
• A large range of size and type of dust filters can be used to improve performance in different circumstances.
FORWARD THROW SWEEPING SYSTEM:
• The dirt is thrown up from below and therefore hopper must be shallow
• The hopper can only be filled to 50-60% of its capacity as the dirt tends to collapse back onto the brush
• Collecting light and bulky debris is much less effective (leaves, paper, etc.)
• Poor visibility of the work area because the hopper is stuck out in front of the brush.
• Smaller dust filters are used so as not to penalise visibility, but that reduces the sweeper’s performance.
So there you have it – over throw sweepers are going to collect more dirt and debris in any given situation and they will work longer and more efficiently. Don’t take my word for it – try one and see for yourselves.