McScreen - Drainage Filter Device Brochure (English)

FRIULANA COSTRUZIONI s.r.l. Via Pedrada, 16 33074 FONTANAFREDDA (PN) Tel. +39 0434 999606 – Fax +39 0434 998637 – www.friulanacostruzioni.it The special shape of the screen and single body of the frame mean the following advantages: It guarantees the correct operation of the machine, regardless of the irregular shape of the civil engineer- ing work. It allows the system to be comprised of different modules in different sizes. For this reason, there are no limits to the size of the system, as it can be module. It can also be installed in any existing sink without making significant changes to civil works. The machine is designed so as to re- quire no regular maintenance in view of the installation position, making it difficult for operators to reach. The choice of materials and the construction type has been made to guarantee maximum durability and reliability over time. The machine is kept clean by the flowing water through the channel and the specific shape of the bars and rakes. To ensure the machine is kept clean, it is regularly moved to prevent potential problems that may occur due to long periods of inactivity. This can be programmed from the electrical panel, setting an operating time of about 3-4 minutes every 30-45 day. The machine will start to operate when rainfall events cause the drain network to overflow. Consent to cleaning is enabled via clean contact, via a level probe or other signal. The machine is completely made in stainless steel, including the oil hydraulic actuator to move it and the tank of the oil hydraulic control unit. The metal structural work is com- pletely assembled in the workshop to guarantee the correct assembly and operation of all parts as well as to speed up the time required to put it into service. Erection is also quick and easy. To guarantee maximum reliability and stability over time, the machine is fixed to the existing site using anchor plugs. The machine is built in compliance with the EC directive and all other safety requirements of the various competent authorities. The client is responsible for: the civil works to house the screen, as well as the works required for the electrical panel and control unit plus the ducting for the wiring needed to connect the screen to the control unit and the level probe and control unit for water level and consent to screen cleaning. The machine will be provided with use and maintenance manual. Specialist manufacturers of machinery for waste water from industrial processes and urban sites. Circular sludge scraper bridges – To-and-fro bridges – Sluice gates Screens Sludge thickeners – Flocculation bridges - Percolators Sludge scraper bridges – Machines built on request McSCREEN, A NEW “DRAINAGE” FILTER DEVICE Technology tailored to the environment. The clever way to treat water. Our experience in the water treat- ment industry and screening is be- hind our McScreen, developed from the amalgamation of a screen with waste recovery and a screen that contains the waste. Based on this idea, we have fitted a smart prism rake inside the bars. This in turn has allowed us to build a modular machine that adapts perfectly to any situation and with relatively low costs. Patent pending - EP 2536890 A A B C D E Friulana Costruzioni s.r.l. from Vigonovo di Fontanafredda (PN) has patented a new filter device for sewage networks. A beneficial tool for manufacturers and managers of purification plants, for town and city councils, consor- tiums, and municipal companies, as well as for industries, engineering companies and building firms. The filtering device is simple, mod- ular and versatile, but at the same time it is hardwearing and built to last. The system is low mainte- nance, which is an important and useful factor, considering the hos- tile environment and difficulty when it comes to accessing the sewage network in which the operators have to act. The system is equipped with a moving cleaning device which has a special “V” shape, an ingenious placement and specific structural characteristics, all of which mean it is most efficient when it comes to pushing back solid objects that due to rainfall and higher water levels in the main channel of the drain- age network, can easily block the screens on the filtering devices in the vent. This is where the excess liquid in the main trough is directed before being discharged into rivers, lakes or the sea. Safeguarding the environment is another reason why investments need to be made in cutting-edge filtering devices with proven effectiveness and operation that, compared to more obso- lete solutions, are able to prevent system collapse caused through blockage or overload. The “rake elements” are rigid, non-deformable and feature a “V”- shaped front projecting section; their singular slide action between the lengthways bars of the vertical screen, with dual travel upwards and downwards, guarantees remov- al of solids and their re-issue into the main channel of the sewage mains, towards the final collection point. A programmable control device prevents the cleaning device and relevant drive mechanism from staying idle for too long and com- promising correct operation, even in the absence of rain. Another specific feature of the whole filtering system is the “an- gled” layout of the vertical screen bars, which facilitates the passage of the flow into the side vents, making it easier to detach solids removed by the cleaning device, allowing them to fall into the main channel, through the action of gravity. The machine has been made even more versatile by the placing of several filtering devices alongside one another, for modular com- positions that are flexible and easily adapted to suit the size and capacity of any channel, without significant interruptions in liquid in the direction of the runoff trough between one screen and the next. The machine has the following main parts: Fixed bar screen, made with cold- rolled plates; the bars are angled to the current, creating a Coanda ef- fect, pulling the water and increasing the flow speed and reducing the risk of moving bodies, such as branches, passing through the bars. Press-formed sheet frame, manu- factured in a single body and mobile structure with 2 cleaning rakes. The structure is kept in position by a system that guarantees the correct alignment between the cleaning rakes and the fixed screen, reducing the necessary force for handling to a minimum. Oil hydraulic driver to move the mobile structure and oil hydraulic power unit with hoses to connect to the actuator; Electric control panel with PLC to complete. Technology tailored to the environment. The clever way to treat water. Floodway self-cleaning bar screen to trap material. How does the Coanda effect work? Technical description The Coanda effect takes its name from Ru- manian aeronautical engineer, Henri Coanda (known for creating the first reaction propul- sion plane, the Coanda-1910). Coanda discovered that a jet of fluid is at- tracted by a nearby surface. The particles in direct contact will lose velocity due to friction, while the outermost particles will tend to preserve their union with the inner ones, and to “crush” them, causing them to maintain their direction. Friulana Costruzioni uses the potential of this effect to separate the water flow from a build-up of materials, such as leaves, branches and other floating elements, making sure that they are removed and returned to the main channel of the sewage network, toward the screening system of the treatment downstream. Rolled bars Tangential flow COST-EFFECTIVE ECO-FRIENDLyRELIABLE