Spray Attachment Washes Screen Mesh
Sweco has introduced the MM4 Traveling Spray, an attachment that can continuously or intermittently wash screen mesh free of solids. Typical applications for the MM4 rectangular separator include dewatering cellulose fibers, plastic recycling, kaolin clay dewatering, starch production and general waste stream solids removal.
In many of these applications, capacity is reduced due to screen blinding. Sweco developed the Traveling Spray to prevent this problem. It operates using a traveling bar equipped with 21 spray nozzles, which move side to side and spray water onto the screen mesh to keep screens clean and facilitate material conveyance.
The bar reverses at the sidewalls and travels back over the screen for a continual cleaning process. The system is suspended from the stationary sump skid to avoid interference with the vibrating basket. It is also equipped with a variable speed drive to optimize screen de-blinding and minimize water usage.