The twin roto sieve is a special device for separating particles and unrecyclable material from municipal waste. There are several actions in the technological separation process:
a) Extraction of small particles and unrecyclable material from waste
b) Drying of waste
c) Dedusting of waste with ventilation system
Waste is separated by rotation of a perforated drum. The first half of the drum contains a round perforation, while the other half contains a rectangular one. The drum is tilted at a drop of 3° towards the exit so that the material can travel more easily. Also, within the drum there is a spiral that rotates the drum to guide the material out. At the beginning of the sifting drum, there are pikes for further bag and / or box tearing and dispersion of municipal waste contents. Below the drum there is a chamber with a screw conveyor installed to accept sifted fractions. The screw conveyor transfers the separate fractions to the output from the underside of the device. Dust particles are rising during the sifting process. To clean the air, the roto site is connected to the filter station via the ventilation pipes. The sieve is located on a metal frame so that a septic tank can be placed below the sieve to transport the separated fractions to the desired location.Depending on the required capacity of the plant, 6-, 8-, 10- or 12-meter lengths are available.