Another option to produce a roller brush is to use brush strands of special design, much stronger than ordinary strands. Brushes have been designed for special applications and very difficult conditions. The height of the strand has to be large enough to accommodate the wire locking system which prevents the filler material from being torn out and thus makes it resistant to very heavy use.
Brush strands have a significant advantage over standard strands.
The photo perfectly shows the side of the holder and the special fold that perfectly blocks the filler material from being pulled out during heavy brush work.
Sample spiral with INOX steel frame and PA 6.12 filling with diameter of 0.60 mm, designed for wastewater treatment plants for cleaning drum screen.
DZ – overall diameter
DK – inside diameter
LR - working length (when rolled up)
Other parameters: spiral pitch, number of turns, spiral direction (left-hand, right-hand)
A – width of frame
B – height of frame
H - height of fill material
The special strand can be bent into a spiral which, if adhered to each other and slid over a steel pipe, for example, forms a roller brush for special applications. These types of brushes are most commonly found in concrete mixing plants, sewage treatment plants and in agriculture.
We have the possibility to offer different spiral dimensions, however, the most frequently ordered one is 8 mm wide and 10 mm high. Often the verbal nomenclature forces the use of the term coil, which is identical to one circle of such a brush.
The width of the working part can be easily calculated by multiplying the number of coils and the width of the holder. For example, 50 coils of an 8 mm wide brush will make a brush with a working width of 400 mm.
Two types of binding material are available: galvanized steel and stainless and acid resistant steel.
Please note that spirals can be clockwise or counterclockwise. This sometimes makes a big difference in the operation of the brush and the direction of rotation of the drive shaft. Also note that a spiral in loose form will have a larger outside diameter than the same spiral when stretched. The formation of a pitch will cause the spiral to become smaller (slightly).
Mounting the brush fitting on the shaft is most often done by welding on both ends, so that there is no possibility of movement. Another possibility is to use clamps (side bands).
Brushes are usually constructed by mounting a loose spiral on a steel shaft (or tube). The simplest mounting option is to weld spiral ends directly to the shaft. When constructing new solutions, the minimum diameter to which such spirals can be wound must be taken into account. Today the technology allows to achieve a minimum diameter of 150 mm.
Roller brushes equipped with a spiral brushes with reinforced construction, can be used in food industry, at vegetable rubbing machines, in sewage treatment plants or as brushes for cleaning moulds in production of concrete products.