Suction Scanning Self-Cleaning Filter

Product Introduction

The suction scanning self-cleaning filter is designed for high-precision water filtration, ensuring continuous operation with minimal maintenance. It features an automatic backwashing system that efficiently removes trapped impurities, making it ideal for applications where water quality must be maintained without interrupting flow. With a filtration precision range of 15-300 microns, this filter provides excellent performance even in relatively turbid raw water conditions.

Working Principle

Water enters the filter housing through the inlet and flows through the filter screen, where impurities and suspended particles are trapped. The clean water then exits through the outlet. Over time, as debris accumulates, the pressure drop across the filter increases. When the pressure differential reaches a preset value, the control system activates the backwashing process. The backwash valve opens, and the suction nozzle moves in a spiral pattern, scanning and cleaning the interior of the filter screen. The collected impurities are discharged through the drain port, ensuring efficient cleaning while maintaining continuous filtration with minimal flow and pressure fluctuations.

Material Composition

Each component of the suction scanning self-cleaning filter is made from high-quality materials to ensure durability and corrosion resistance:

• Filter Housing: Stainless Steel (SS304/SS316L) or Carbon Steel with anti-corrosion coating

• Filter Screen: Stainless Steel Wedge Wire or Sintered Mesh

• Suction Nozzles: High-grade engineering plastic or Stainless Steel

• Backwash Valve: Pneumatically or electrically actuated for precise control

• Drive System: Electric motor or hydraulic drive for nozzle movement

• Control System: PLC-based automated system for backwash activation

Applications

The suction scanning self-cleaning filter is widely used in various industries where high-precision water filtration is essential. Common applications include:

• Municipal Water Treatment: Ensuring clean water supply and protecting downstream equipment

• Industrial Process Water Filtration: Removing fine particles to maintain product quality

• Cooling Water Systems: Preventing clogging and scaling in heat exchangers

• Irrigation Systems: Protecting drippers and sprinklers from blockages

• Desalination Plants: Pre-filtering seawater to reduce membrane fouling

• Power Plants: Ensuring clean water for cooling and boiler feed applications

Key Selection Parameters

To select the appropriate suction scanning self-cleaning filter, consider the following factors:

1. Flow Rate: Match the filter size with the required system flow rate.

2. Filtration Precision: Choose between 15-300 microns based on application needs.

3. Operating Pressure: Ensure compatibility with system pressure conditions.

4. Filter Housing Material: Select between stainless steel (SS304/SS316L) or coated carbon steel based on the working      environment.

5. Backwash Mechanism: Determine if an electric or hydraulic drive is preferred.

6. Connection Type & Size: Ensure proper inlet/outlet flange or threaded connections.

7. Control System: Decide between time-based, pressure-differential, or manual cleaning initiation.

8. Environmental Factors: Consider temperature, chemical exposure, and installation space.

FAQ

1. How does the suction scanning self-cleaning filter work?
   It uses a motor-driven suction nozzle to scan and clean the filter screen when the pressure drop reaches a preset value, ensuring uninterrupted filtration.

2. What is the filtration precision range?
   The filter provides a precision range of 15-300 microns, which can be customized based on requirements.

3. Does the filter require manual cleaning?
    No, the filter operates automatically with a PLC-controlled backwashing system, reducing manual maintenance.

4. What materials are used for the filter screen?
    The filter screen is typically made of stainless steel wedge wire or sintered mesh for durability and efficient filtration.

5. Can the filter handle high turbidity water?
    Yes, the filter is designed to handle relatively turbid raw water with effective backwashing to prevent clogging.

6. How does backwashing affect the system's flow and pressure?
    The filter maintains stable flow and pressure during backwashing, minimizing fluctuations.

7. Is it suitable for seawater filtration?
    Yes, when constructed with corrosion-resistant SS316L materials, it is ideal for seawater applications.

8. What power options are available for the drive system?
    The filter can be equipped with either an electric motor or a hydraulic drive, depending on the application.