The screw screens are used to pre-treat any type of wastewater, whether municipal or industrial. Depending on the type of application, there are two different versions: screw screen directly installed in the channel or screw screen supplied complete with tank, with liquid inlet and outlet flanges and, at request, with lateral by-pass screen. For both models, you can choose the version with or without compacting zone.
The main advantages of these models of machines are mainly the low cost of initial investment and the subsequent little maintenance required.The construction of the machine can be made by choosing between the execution in Stainless Steel AISI 304 or AISI 316. The screw can be made of Stainless Steel (choosing between AISI 304 and AISI 316) or possibly also in carbon steel. The screw is always shaftless type. The standard machine is installed in a 35° of inclination from the ground, but can be provided up to a maximum inclination of 48°. The machine is constituted by a screen basket of Stainless Steel that may have a spacing aperture from 2 to 10 mm, in the case of perforated profile, or from 0,25 up to 3 mm in the case of wedgewire profile.
The screen basket is cleaned by reinforced and bolted brushes, easily replaceable once worn out.
These machines guarantee excellent performance even in the presence of fibrous or particularly long products, that do not cause clogging or blocks. In the standard model are always included the washings in the screening, in the transport and in the compacting area (when present), all controlled with a manual valve. The screw screens, of any model, lend themselves to a large variability of customizations, to make every application highly functional.
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