Spiral belts for belt presses
Heat-set polyester spiral belts for sieve belt presses, gravity tables and dewatering tables. Air permeability, spiral pitch and surface are selected for the sludge type.
dwg AVX-1604 · Markets
Sludge dewatering & belt presses
Choosing a dewatering belt starts with the sludge and the installation. The belt affects water drainage, throughput and cake dry-solids content. Polymer dosing also plays a part. So do the layout of the gravity and wedge zones and the pressure roll sequence.
We supply spiral belts, woven filter cloths and drainage cloths to your machine dimensions. We specify the belt, seams and edges together, based on the sludge and your requirements for the joint.
Dry-solids content and throughput depend on sludge, conditioning, the installation and operating conditions. Keep measured feed and cake dry-solids values separate from target values. Any proposed operating target requires review of the process data and test conditions.
Filter cloths & drainage cloths
Woven mono- and multifilament cloths for chamber and membrane presses, plus the drainage layers underneath. Sealed edges, reinforcements and cut-outs supplied as one item.
Seams, edges and fitting
Clipper seams, spiral seams and on-site sealing. We specify the seam with the belt because its construction affects belt life.
Screens & strainers upstream
Wedge wire screens, perforated media and woven mesh for screening and thickening ahead of the press. A blinding screen at this stage can restrict the throughput of the line.
What information helps select your dewatering belt?
Share the information you know or have measured. Flag missing data and keep measured values separate from desired targets.
- Installation and process: machine manufacturer, type or model, and its role in the process.
- Belt or cloth: length and width, material or reference, and known seam and edge construction.
- Sludge: type and measured feed and cake dry-solids content; state the desired cake target separately.
- Operating data: known throughput or flow, polymer or chemical dosing, pH, temperature, washing medium, pressure and cleaning interval.
- Symptoms and history: wet cake, blinding, seam or edge wear, filtrate quality, and previous maintenance, cleaning or replacements.
- Quantity and planning: required quantity, desired replacement or shutdown window, and documentation needed.
Enter the technical details in the form below. Add drawings or photos as attachments.
Suitability, production and delivery options are confirmed only after technical review of your process data and a capacity check.
Problems at different process stages
For wet press cake, start with the belt-press guide and its dewatering-belt information. The mesh-blinding article concerns an upstream screening or prefiltration stage.
These articles are starting points for technical review. Each listed product needs an application check for the process stage, medium, flow, temperature, pressure and cleaning method.
Why does my belt press cake stay too wet?
Dry-solids content falls over several weeks while polymer consumption rises. Slower belt speed may improve dewatering but reduces throughput. More water in the discharged cake increases transport weight and may raise disposal costs.
Read the guideProduct information for this process stage
Why does my filter mesh blind within hours?
Differential pressure climbs far faster than the design curve. Cleaning intervals shrink from weeks to hours, and after each cleaning the recovery gets worse. Throughput drops while the pumps work harder.
Read the guideProduct information for this process stage
RFQ
Send a drawing or ask us to help create one.
Share your specifications, sketch or description using this form. You will receive a personal response within two business days.