Bar screen

for wastewater treatmentcoarse screening

This is a longitudinal cable rake screen. It is ideal for great heights of water or deep shafts, without restrictions on discharge height or channel width. Cleaning is carried out frontally using a rake that travels along a fixed guide on the frame. It is driven by cables. The screen bars, made from carbon steel, are blasted with metal particles, to a Swedish Standards Organisation grade of SA 2 1/2, and then covered with corrosion-resistant paint. Alternatively, they can be made from galvanised stainless steel. The drive unit comprises a stainless steel shaft mounted on bearings and a hollow shaft geared motor. Transmission by cables and reel drums located on the drive shaft. Cables guided by guide pulleys. Three-phase asynchronous electric motors with IP-55 protection. Monobloc frame made from steel sections with anchoring frame to building works. Plastic-coated rake cleaning scraper. Oscillating scraper arms with cushioned action. Bars inclined 85º from the bottom. Screen made up of independent bar modules. Oscillating rake with teeth to clean the bars. Articulated rake on roller carriage that travels vertically using cables (2), along the frame guide. The rake is driven by a geared motor and a spindle that permits variation of the guide pulley distance.