Duplex Basket Strainer

How Does Duplex Basket Strainer work?

The double-layer basket filter primarily consists of connecting pipes, a cylinder body, a double-layer filter basket, flanges, flange covers, and fasteners. Its working principle is as follows:

• Fluid enters the filter through the inlet, first passing through the outer filter basket (typically with larger apertures) to intercept larger particulate impurities.
• The fluid then passes through the inner filter basket (usually with smaller apertures) for fine filtration, removing finer particles.
• The clean fluid, having undergone dual filtration, exits through the outlet. When accumulated impurities in the filter baskets cause excessive pressure differential, the system must be shut down to open the filter for cleaning or basket replacement.

Some double-layer basket filters incorporate a jacketed design, featuring an additional layer around the outer shell. This allows steam or thermal oil to be introduced for fluid insulation or heating, preventing solidification or excessive viscosity due to temperature drops. This ensures consistent filtration efficiency, making it particularly suitable for cold regions or applications involving high-viscosity liquids.

Features Of Duplex Basket Strainer

• Double-Layer Filter Basket Design: Typically features an outer layer of perforated plate (high strength for preliminary filtration and structural support) and an inner layer of woven mesh (high precision for fine filtration). The mesh wires are often arranged in an offset pattern to further enhance filtration performance.
• Housing and Materials: Main bodies are commonly made of Stainless Steel 304, 316L or Carbon Steel (with surface corrosion protection) to meet varying media corrosion requirements.
• Quick-Opening Structure: Many models feature quick-release end caps (e.g., horizontal quick-release clamps, eye bolts) for rapid access during maintenance and cleaning.
• Drainage Design: A drain port or plug is often provided at the bottom to remove accumulated sediment without opening the main body.
• Optional Configurations: Can be fitted with a pressure gauge or differential pressure sensor to monitor filter operation and indicate when cleaning is required.

What Are The Advantages Of Duplex Basket Strainer?

• High-Efficiency Filtration & Large Contaminant Holding Capacity: Dual-layer filter screens sequentially intercept impurities of varying particle sizes. Features large filtration area, low pressure drop, and strong contaminant retention capability.
• Convenient Maintenance and Cleaning: Quick-opening design facilitates easy access and filter basket replacement. Select models support cleaning without shutdown (dual-unit type).
• Wide Applicability and High Strength: Adaptable to diverse corrosive media and operating conditions through material and filtration precision selection. Outer perforated plate structure provides robust support and protection for the inner fine mesh.
• Intelligent Monitoring: Optional differential pressure sensing systems provide timely cleaning alerts for predictive maintenance.
• Insulation Function: Jacketed insulation models effectively prevent fluid solidification or viscosity increase, ideal for cold environments or specialized process requirements.

애플리케이션 Of Duplex Basket Strainer

Double-layer basket filters are widely used in industrial sectors requiring continuous production and high filtration reliability:

• Chemical and Petrochemical Industries: Filters feedstock oils, acid/alkali solutions, organic solvents, and recovers catalyst particles, protecting reactors, pumps, and instrumentation.
• Food and Pharmaceutical Industries: Filters high-hygiene fluids like beer, beverages, dairy products, syrups, and pharmaceutical solutions, ensuring product safety and GMP compliance.
• Power Generation and Marine: Filters fuel oil, lubricants, and circulating water to protect turbines, generators, and marine propulsion systems.
• Environmental Protection and Water Treatment: Removes solid particles in wastewater treatment or circulating water systems.
• Other Industries: Purifies process fluids in metallurgy, textiles, papermaking, and related sectors.

With its dual-stage filtration, robust construction, easy maintenance, and flexible configuration, the double-layer basket filter has become a critical component across numerous industrial sectors for maintaining pipeline system cleanliness and safeguarding the safe, stable operation of key equipment. Selection should be based on comprehensive consideration of factors including fluid properties (corrosivity, temperature), required filtration precision, operating pressure, and installation space.

We hope this information provides a comprehensive understanding of duplex basket filters. Should you have specific application scenarios or further questions, I can offer more detailed recommendations.

자주 묻는 질문  

1. Q: How can I tell if the filter element needs to be replaced?  

A: Replacement is required when the differential pressure gauge shows differential pressure ≥ 0.1MPa or when the flow rate drops by 30%.

2. Q: Can you handle high temperature oil liquids?  

A: Yes, 316L material model can withstand 450℃, high temperature sealing ring is required.

3. Q: What is the lead time for customization?  

A: 7 days for standard models, 15-30 days for special materials/sizes.

4. Q: Are there still impurities after cleaning?  

A: The filter may be broken, check the integrity of the filter element and replace it.