Mill Hill Engineering Ltd

Belt press

The belt press is used for water clarification or consistency thickening with a consistency range of O.5%-40%. The headbox and feed chute create a constant uniform flow over the entire width of the upper wire, which runs counter to the stock flow, Foils create a low pressure zone to pull the water from the stock, drying the mat on one side. Shoes positioned above the foils continually turn the stock to enable de-watering throughout the fibre mat. A hexagon bar vibrates the upper wire, agitating the stock, and increasing the de-watering effect of the foils. Plastic retaining strips run the whole length of the suction zone, ensuring thestock remains on the upper wire. Once the upper and lower wires meet, the fibre mat is compressed by a section of offset rollers, squeezing water from the fibre mat. Thickened stock falls off the lower wire to continue through the system, with the removed water having been collected in stainless steel catch trays for recycling. Pneumatically operated stretch gears alter tension in the wires. To ensure that the wires run in the middle of the rollers, two guide units are installed. These operate by the displacement of a spade against the wire, adjusting the alignment of the guide roll, re-centering the wire.