Group 88
Group 86

Wedge-wire grids and screens

The Wadge-wire screens are manufactured by welding profiled rods to supporting rods and offer a number of advantages over conventional systems (welded/woven screens):

  • Unique shape stability, resistance to bulging and cracking even in environments with loads of 350 kPa and above
  • Precise media retention with gaps of up to 0.03 mm according to the required shape
  • The “V” shape of the open part allows contact at only two points, which prevents clogging
  • Flexibility of design: material, shape according to requirements, including manholes, hinged elements, etc.
  • Easy cleaning
  • Ensures a stable open area necessary for a wide range of processes
  • Stable contact area even without a bed of inert balls
  • Reduces particle damage

Wedge-wire screens can be used:

  • For direct filtration – solid particles/liquid, solid particles/gas, de-watering
  • As a carrier element for media – catalyst, adsorbents (activated carbon, molecular sieves, alumina), sand beds, resin, etc.
  • Decorative elements in architecture

Applications:

  • Filtration separation
    ◦ Rotary drums and centrifuges
    ◦ Filter cartridges
    ◦ Screw presses
    ◦ Water: Wells, surface water, water treatment, drainage, etc.
    ◦ Mineral processing
    ◦ Polyurethane casting
    ◦ Paper mills
    ◦ Food industry (starch, sugar refining, winemaking, brewing, bag filters, etc.)
    ◦ Processes
         –  Dewatering
         –  Filtration
         –  Sieving
         –  Media retention
         –  Flow distribution
         –  Straining/sifting
  • Architecture and construction
    ◦ Column and wall covers
    ◦ Stairs and railings
    ◦ Convector grates and floors
    ◦ Ventilation systems
    ◦ Shading blinds
    ◦ Lighting
    ◦ Facades
    ◦ Furniture and others
  • Refineries and petrochemicals
    ◦ Central and peripheral baskets
    ◦ Scallops and shaped peripheral baskets
    ◦ Supporting grates, screens
    ◦ Distribution floors
    ◦ Collectors – distributors
    ◦ Necks, baskets
    ◦ Screens (scale, resin trap)
    ◦ Inlet structures
    ◦ Malt houses, brewery floors
    ◦ Other
    ◦ Processes
         –  Catalytic reforming
         –  Adsorbents
         –  Paraxylene
         –  Hydrogen treatment
         –  MTBE
         –  Ammonia converter
         –  Propane dehydrogenation
         –  Styrene
         –  Sulfur removal

Examples of Wadge wire net configurations
Basic configuration:

Axial vessel flow arrangment:

Radial vessel flow arrangment:

Cylindrical flow arrangment: