Product Overview
As a professional manufacturer of wire mesh products, Hebei Zhen'ou Wire Mesh Products Co., Ltd. produces the Wedge Wire Screen Tube, also commonly referred to as a Johnson screen or profile wire filter element. The Wedge Wire Screen Tube is a filtration component manufactured by resistance-welding trapezoidal profile wires onto support rings. This construction creates continuous V-shaped slots with controlled apertures, designed for solid-liquid separation in industrial equipment such as centrifuges and vibrating screens.
Technical Parameter
Manufacturing specifications can be precisely tailored. Key standard parameters include:
|
Parameter |
Specification Range / Options |
Notes |
|
Slot Aperture |
0.05 mm – 3.0 mm (Standard) |
Can be extended up to 30 mm upon request. Standard tolerance: ±0.02mm for fine slots. |
|
Primary Materials |
AISI 304, 316L Stainless Steel |
Selected for corrosion resistance, strength, and temperature tolerance. |
|
Standard Outer Diameter |
25 mm – 600 mm |
Custom diameters are available. |
|
Temperature Resistance |
Up to 800°C (AISI 304) |
Varies with material grade. |
|
End Connections |
Threaded, Flanged, or Plain |
Configured for direct integration into press, centrifuge, or separator housings. |
Product Advantages
- Clog Resistance：The inward-widening V-profile (e.g., 1.5x wider at the base than the slot opening) prevents particles from lodging deeply, facilitating dislodging during backwash or mechanical cleaning.
- Mechanical Durability：The continuous weld along each wire-to-support junction creates a monolithic structure with a typical shear strength exceeding 350 MPa at weld points.
- TCO Advantage：In abrasive mineral processing applications, the wear life of a wedge wire screen with 4mm thick wire profile has been documented to be 2-3 times longer than a perforated plate of equivalent thickness, reducing replacement frequency.
Primary Applications
- Agriculture & Livestock: Solid-liquid separation in manure press screws, decanter centrifuges, and dryer screens.
- Fod & Beverage: Filtration and clarification of juices, pulps, and syrups.
- Chemical & Pharmaceutical: Catalyst retention and separation of process slurries.
- Water & Wastewater: Screening and filtration in treatment systems, including influent and sludge dewatering stages.
- Mining & Minerals: Dewatering and sizing in vibratory screens and industrial centrifuges.
FAQ
Q: Compared to traditional punched screens or woven wire mesh, where does the Total Cost of Ownership (TCO) advantage of Wedge Wire Screen Tube lie in long-term operation?
A: Although the initial investment may be higher, the TCO is typically lower for the following reasons:
Longer Replacement Cycles: Excellent wear resistance (the thickest part of the trapezoidal wire can reach 3–6 mm) results in a lifespan that is often several times that of punched screens or woven mesh.
Reduced Downtime Losses: The clog-resistant design minimizes cleaning and maintenance downtime, ensuring production continuity.
Stable Product Quality: The precision does not degrade rapidly due to wear, avoiding quality losses caused by fluctuations in particle size distribution.
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