Roxia filter grids for tower press filters have a longer lifetime because they are made from polypropylene with higher, up to 30 % glass fibre content. This reinforces the grid wear resistance and makes it possible to use them in high-temperature applications. Individual Roxia grid elements are bigger than usual as they extend over the full width of the filter plate. This means there are fewer grid components that are easier to install. Available sizes are for 1.6 m², 2.5 m² and 6 m² filter plates. Roxia filter grids for tower press filters are durable and reliable which results in savings and extended service intervals.
Sealed filter grid corners
All cut corners of the Roxia filter grids are sealed. The sealing extends not only grid, but also filter cloth lifetime – there are no sharp edges that can otherwise harm the cloth. Upon request, it is possible to deliver them uncut and without sealing. Different tower press filter types also require different plate corners.
Grids offered by Roxia come in the following corner types:
Corner 80 x 80
Rounded corner R220
Corner 210 x 210
Corner 173 x 173
The latter three corner cuts are applicable to 6 m² filter plate size.
Various grid sizes, openings and corner types
Roxia filter grids come in different sizes for tower press filter plates measuring 1.6 m², 2.5 m² and 6 m². The grid components are bigger than usual which significantly eases the installation. Fewer grid elements to install means less work, shorter installation time and reduces the possible risk of improper fitting.
The number of Roxia grid elements per filter plate size:
Filter plate size 1.6 m² fits 5 elements
Filter plate size 2.5 m² fits 7 elements
Filter plate size 6 m² fits only 12 elements
Besides traditional diagonal openings, Roxia filter grids are also available with square openings. The latter options allows a better flow of filtrate and air. A larger open area through square openings has less filtration resistance. For more details, see the technical datasheet or consult Roxia filter service experts.
All cut corners of the grids are sealed, which also extends filter cloth lifetime.
Square openings on Roxia filter grids provide a larger open area which improves flow of filtrate and air and reduces filtration resistance.
Conventional diagonal grids
Less open area & less filtration area → less capacity
Small openings → higher probability of blinding
Lots of supporting legs → rambling route for filtrate/air
Thin supporting legs & wearing → collapsing
Original yellow element just polypropylene → low mechanical properties
Small element size → complicated assembly
Square openings: lots of open area less filtration resistance
Bigger openings → less blinding problems
Big element size → easy to install
Rigid thick supporting legs & less legs needed → easy flow of filtrate/air
Thick legs → wear resistance
Glass fiber reinforced polypropylene → good mechanical properties