CHG Metal manufactures multi-layer bolted and clamped wire cloth filter leaves for customers who need field mesh replacement and drainage-core service. The bolted or clamped frame can be opened, the outer wire cloth replaced, and the heavy drainage core and frame reused.
Bolted vs Welded Construction
Bolted or clamped construction suits projects with frequent maintenance, field re-meshing or drainage-core inspection. Welded construction suits permanently sealed, high-strength applications. The choice should compare maintenance method, downtime, sealing, rigidity and cost.
|
Comparison |
Bolted/Clamped |
Welded |
|
Maintenance |
Field mesh replacement |
Normally factory return or complete replacement |
|
Drainage core |
Inspectable and reusable |
Usually fixed |
|
Sealing |
Clamped sealing surface |
Continuous weld |
|
Application |
Frequent maintenance and removable construction |
Permanent closure and high strength |
Bolted & Clamped Leaves vs. Permanently Welded Leaves
| Operational Parameter | Permanently Welded Filter Leaves | Our Bolted & Clamped Filter Leaves |
| Maintenance Capability | Factory return required for re-meshing | 100% On-Site Field Serviceable (Fast mesh swap) |
| Lifetime Core Reusability | Risk of frame deformation during tear-off | Indefinite Drainage Core Reusability |
| Total Cost of Ownership | High (Full replacement on mesh failure) | Low (Only replace damaged wire cloth panels) |
| Mesh Tensioning Mechanism | Spot-welded or channel-crimped | Mechanical Uniform Clamp Bar Compression |
| Thermal Expansion Tolerance | Rigid seams can crack under thermal shock | Slotted bolt channels absorb differential expansion |
| Frame Structural Rigidity | Fixed welded profile | Heavy C-Channel with reinforced corner support |
Key Performance Advantages Rooted in Our Manufacturing Process
Precision Slotted Bolt Channels: Perimeter clamping bars feature precision-machined slotted holes that distribute clamping force evenly, preventing localized wire cloth tearing during torque application.
Heavy-Duty Internal Core Matrix: Engineered with a rigid 5-layer crimped drainage grid that provides continuous structural backing, preventing mesh sag or core collapse under high differential pressures.
Corrosion-Resistant Fastener Locking: All bolts and clamping screws utilize locking washers or anti-galling thread coatings to prevent self-loosening from pneumatic vibratory discharge while ensuring smooth unbolting during maintenance.
FAQ
Q: Can bolted filter leaves maintain the same liquid sealing integrity as welded leaves?
A: Yes. Precision-engineered clamping bars provide continuous, high-pressure perimeter compression along the active mesh edges, preventing slurry bypass between the cloth and the frame.
Q: What tools are required to replace the wire cloth on a bolted leaf in the field?
A: Only standard hand tools or portable torque wrenches are needed. Technicians unbolt the perimeter clamping bars, remove the worn mesh layer, align new wire cloth over the drainage core, and re-torque the fasteners to specification.
Q: How do bolted leaves perform under high-frequency vibratory cake discharge?
A: Our bolted leaves use high-tensile fasteners combined with lock washers or self-locking thread designs. This ensures that dynamic vibratory energy passes efficiently through the frame for complete cake release without loosening the perimeter bolts.
Q: When should bolted or clamped filter leaves be used?
A: Use them when the mesh or support layers need to be replaced in the field, or when the drainage core must be inspected and reused.
Q: Are bolted leaves as rigid as welded leaves?
A: The frame and clamping design determine rigidity. The application must be reviewed for pressure, vibration and cake load before selecting the construction.
Q: What information is needed for a quotation?
A: Please provide the frame drawing, clamping method, mesh, layer structure, material, dimensions, pressure, temperature and maintenance method.
Request a Quote
Send the frame, clamping method, mesh, layer structure, material, dimensions, pressure and temperature to CHG Metal for a removable leaf review.
