The water to be screened is either pumped or drawn by gravity through the inlet flange. The inlet pipe on the rotary screen is connected to the inlet flange in the distribution area, where the water reaches and comes into contact with the rotary drum though its distribution chamber, which spreads the water all along the filtering drum.
The water passes through the V-shaped profiles that form the drum while any solids larger than the spacing on the lattice are retained on its surface. These solids are carried by the drum as it turns until they are removed by a scraper, which rests on the length of the drum and facilitates the discharge of the wastes.
This scraper, located on the opposite side from the inlet, is in permanent contact with the drum along its entire length thanks to the pressure exerted by a spring, which also compensates automatically for any wear.
The clean, filtered water passes through the lower part of the screen through the V-shaped profiles, now free of solids but still containing the particles that have not been removed by the scraper. The filtered water leaves the QUILTON rotary drum screen through the chamber for collecting filtered water, located in the lower part, via a flanged connection. It is also fitted with emergency outlet and emptying flanges.
The filtering drum consists of V-shaped wire, forming a helicoidal coil that is electro-welded to a chassis that has been specially designed for this purpose. The welding points on the wires and supports ensure a rigid structure that is extremely strong. There is almost no risk of clogging or obstruction thanks to the V-shaped spacing between wires that does not allow for more than two points of contact with the particles.
The scraper or blade may be made of brass, copper, bronze or plastic so as not to damage the stainless-steel drum. The pressure and contact between the two components are achieved through the action and force of a system that allows for the manual adjustment of the scraper pressure.
The system for washing and cleaning the lattice on the rotary drum screen consists of a pipe, fitted with evenly spaced spray nozzles, located along the entire length of the drum.
Options in assembly and maintenance