Advanced Solid-Liquid Separation for Dewatering, Desliming & Classification
The Wedge Wire Curved Screen, also known as a DSM Screen or Sieve Bend, is a high-capacity, economical solution for preliminary dewatering and mineral processing. Utilizing a concave curved profile, our screens leverage centrifugal force and gravitational flow to achieve significantly higher filtration efficiency than flat panels.
· Ultra-Precision Slots: Customizable from 20μm to 3000μm with a strict tolerance of ±5μm.
· Optimal Geometry: Available in 45°, 60°, 120°, 270°, and 300° arcs for diverse application needs.
· Non-Clogging Design: V-shaped wires allow slots to expand inwardly, ensuring zero blockage during long-term operation.
· Exceptional Durability: Fusion-welded stainless steel (SS304, 316L, SS321) construction for maximum wear and horizontal strength.
· Versatile Flow Options: Supports Standard Wound, Reverse Formed, Reverse Wrapped, and Axial flow configurations.
The Wedge Wire Arc Curved Screen Plate is an essential component for coal preparation plants and mineral processing facilities. By wrapping and welding V-shaped stainless steel profile wire around support rods and bending the panel into a precise curve, we create a concave screen that excels in fine particle classification and slime recovery.
This curved structure allows material to flow perpendicularly across the slots, stripping the fluid layer and achieving precise sizing. Compared to flat screens, the DSM screen provides greater capacity and better dewatering performance, especially when used in conjunction with hydrocyclones for desliming and medium removal.
Product Specifications
Feature Item
Technical Specifications
Material Grades
SS304, 316L, 321, Duplex Stainless Steel (2205, 2507), etc.
Slot Range
20 μm to 3000 μm (Tolerance: ±5 μm)
Wedge Wire Sizes
0.5 mm – 5.0 mm (Width/Height Range)
Support Rod Sizes
1.5 mm – 8.0 mm (Width/Height Range)
Angle Options
45°, 60°, 90°, 120°, 140°, 150°, 270°, 300°, etc.
Arc Height
10mm to 50mm (or customized based on panel size)
Max Dimensions
Length up to 6000mm; Width up to 6000mm
Frame Type
Frameless, "L"-shaped, Ordinary, or Customized (e.g., 5*10mm)
Flow Forms
Standard Wound, Reverse Formed, Reverse Wrapped, Axial
Key Advantages
High Structural Strength: Vertical strength increases with profile depth, while horizontal strength is optimized to prevent lateral bending, maintaining slot precision under high material loads.
Precision Sand Control: With slots as small as 0.15mm, the screen provides superior classification, reducing pump maintenance and extending the life of downstream equipment.
Self-Cleaning V-Wire Geometry: V-shaped slots expand inwardly, allowing particles to pass through easily without clogging, maintaining high efficiency over time.
Extended Service Life: A specialized opening angle minimizes wear on the profile’s top surface, preventing rapid oversized aperture limits.
Greater Capacity: The arc structure enhances centrifugal separation, delivering better dewatering and desliming than static flat plates.
Industrial Applications
Beer and Beverage: High-precision wedge wire filters ensure the clarity and purity of beer, wine, and syrups by providing efficient diatomaceous earth filtration and yeast removal.
Grain and Food Processing: Versatile screening solutions for sifting, drying, and grading grains, starch, and flour while meeting strict food-grade hygiene standards.
Mining Screen: Heavy-duty wedge wire panels and baskets designed for ore classification, tailings dewatering, and coal washing under high-impact conditions.
Oil and Gas: Reliable Johnson-type screens used for downhole sand control, drilling mud filtration, and catalyst recovery in harsh petrochemical environments.
Paper and Pulp Filter: Specialized filtration elements for fiber recovery, white water recycling, and efficient wastewater treatment in paper manufacturing.
Water Treatment: Non-clogging wedge wire cylinders and panels for seawater desalination pretreatment, municipal sewage screening, and self-cleaning water filters.
Beer and Beverage
Grain and Food Processing
Mining Screen
Oil and Gas
Paper and Pulp Filter
Water Treatment
Factory Strength
16+ Years of Expertise: Dedicated to producing stainless steel wire since 2009. Large-Scale Production: 18,000㎡ facility with three state-of-the-art plants in Tianjin, China. High-Tech Enterprise: Recognized as a National High-Tech Enterprise with ISO 9001 certification. Global Reach: Products exported to Europe, America, Southeast Asia, and the Middle East. Fast Fulfillment: Orders fulfilled swiftly with standard lead times of 7-15 days.
Quality Control
· Micro-Tolerance Inspection: Every DSM screen plate is measured to ensure the ±5μm slot tolerance. · Profile Integrity Check: Verification of horizontal and vertical strength to prevent structural deformation. · Welding Quality Assurance: 100% fusion-welding check between V-wires and support rods for impact resistance. · Infrared Monitoring: Real-time production monitoring ensures consistent run-out tolerance across the entire curved surface.
Packaging & Delivery
Packaging: Wooden spools, iron spools, or customized packing for safe international transit. Shipping: Sea freight, air freight, and express delivery available.
FAQ
Q: Why is a curved screen better than a flat screen for dewatering?
A: The curved structure (DSM) uses gravity and centrifugal force to “strip” the liquid layer from the solid material more effectively, allowing for higher flow rates and better separation in a smaller footprint.
Q: Can you customize the angle and arc height for existing machinery?
A: Yes. We offer standard angles like 45°, 60°, and 120°, but we can customize the arc height and angle (up to 300°) to match your specific equipment frame.
Q: What is the smallest slot size you can achieve for fine mineral processing?
A: We can manufacture curved screens with slots as small as 20μm (0.02mm), with a precision tolerance of ±5μm.
Q: Are samples available for material testing?
A: Sample provision is based on the quantity and complexity of the wedge wire required. For large industrial projects, we can provide samples to verify the slot precision and material grade.
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