In industrial liquid filtration systems, suspended particles, impurities, and solid contaminants can gradually block filter screens and reduce flow efficiency. Traditional filtration equipment often requires manual cleaning or frequent replacement of filter elements, increasing maintenance requirements and operation interruptions.
A scraper-type automatic filtration system uses a mechanical cleaning structure to remove accumulated particles from the filter screen while maintaining continuous filtration. By combining a vertical installation structure with an internal scraping mechanism, this equipment is designed for applications requiring stable filtration performance and reduced manual intervention.
Hangzhou Hanzhikang Purification Equipment Co., Ltd provides Vertical Scraper Self-Cleaning Filter solutions for liquid filtration applications, focusing on equipment structure design, filtration accuracy selection, material configuration, and customized engineering requirements.
Four-Stage Operation Process of Vertical Scraper Filtration Equipment
Liquid Flow and Filtration
During operation, contaminated liquid enters the filter housing through the inlet port. The liquid passes through the internal filter screen, retaining solid particles larger than the selected filtration rating. The clean filtrate flows out through the outlet port.
Pressure Difference Detection
As particles build up on the filter screen surface, the differential pressure increases. A differential pressure monitoring system detects this change and triggers a cleaning cycle once the preset limit is reached.
Scraper Cleaning Process
Upon signal, a motor-driven scraper rotates along the screen, removing trapped particles without stopping liquid flow. This ensures continuous, uninterrupted process operation and allows filter screen reusability.
Drainage & Waste Removal
The scraped particles accumulate near the bottom drain outlet. The automatic discharge valve opens based on the PLC control program, purging the waste contaminants before closing to continue filtration.
Main Structural Components & Design
Filter Housing
Provides a sealed flow channel enclosing the inner mechanism. Materials are matched to chemical compatibility, temperature, and corrosion resistance:
Stainless Steel Carbon Steel Special AlloysFilter Screen
The core elements determining particle removal performance, cleaning efficiency, and service life:
Stainless Steel Mesh Wedge Wire Screen Perforated Metal ScreenScraper Assembly
Directly interfaces with the screen surface. It is engineered carefully for contact pressure, wear resistance, rotation stability, and full cleaning coverage to avoid screen wear.
Automatic Control System
The PLC control module handles automated cleaning cycles, motor operation, drain valve opening timing, and safety/alarm indications.
How to Select the Right Automatic Scraper Filter?
Before selecting a specific filtration system, ensure all application variables are correctly assessed:
| Selection Parameter | Critical Factors to Analyze |
|---|---|
| 1. Liquid Characteristics | Viscosity, chemical composition, operating temperature, and solid particle type. |
| 2. Filtration Accuracy | Required mesh size, target particle diameter, and downstream protective requirements. |
| 3. Flow Capacity | Maximum flow volume requirements, working pressure limits, and exact pipeline dimensions. |
| 4. Material Requirements | Chemical compatibility for corrosive liquids, operating environments, and structural steel grades. |
System Advantages
- Reduced Manual Intervention: Eliminates downtime and limits labor intensive element replacements.
- Continuous Online Filtration: Cleaning functions simultaneously while processing, preventing upstream/downstream pressure spikes.
- Eco-friendly Screen Reusability: Sturdy metal screens eliminate recurrent costs of consumable paper/bag replacements.
- Flexible Configuration: Built to scale exactly to custom flows, temperatures, and space limitations.
Application Areas
- Water Circulation Systems: Cooling water loop treatment, protective filters for delicate heat exchangers and centrifugal pumps.
- Industrial Fluids: Processing lines for chemical fluids, chemical intermediate filtration, and process liquid clarification.
- Manufacturing Systems: Fluid distribution machinery requiring clean supply flow, nozzle safety, and continuous pipeline protection.
FAQ
Q: Does liquid filtration need to be shut down during scraping?
No. Cleaning cycles run dynamically while maintaining fluid output, matching the continuous flow demand of high-demand processing lines.
Q: What filtration accuracy is supported?
This is determined by the specific filter screen configured. We offer varying mesh scales corresponding to your specific target micron ratings.
Q: How often does the system require maintenance checks?
Maintenance schedules depend on concentration rates, operating runtimes, and liquid properties. We recommend periodic inspections of the scraping blades, internal O-rings/seals, and sludge purge valves.
Q: Can the overall unit dimensions and system structures be customized?
Yes. Hangzhou Hanzhikang offers full customization including tailored sizing, alternative materials, custom PLC logic schemes, and target connection sizes.
Develop Your Filtration Solution
Selecting suitable filtration equipment requires consideration of liquid characteristics, filtration requirements, and system operating conditions.
Hangzhou Hanzhikang Purification Equipment Co., Ltd provides Vertical Scraper Self-Cleaning Filter solutions with support for equipment customization, structural design, and filtration system integration. The company focuses on developing filtration equipment for industrial liquid processing and water circulation applications.
Contact Hangzhou Hanzhikang