What is Pneumatic Scraper Self-cleaning Filter?
Pneumatic Scraper Self-cleaning Filter is a highly efficient and automated industrial liquid filtration device.
Filter: Its core function is filtration, removing solid particles from liquids.
Self-cleaning: Its most critical feature is its ability to automatically clean the filter screen, eliminating the need to interrupt production or manually remove the filter element, significantly reducing maintenance.
Pneumatic scraper: This describes the specific technology used to achieve its self-cleaning function. The cylinder provides the power, and the scraper performs the cleaning action.
Core Working Principle:
The filter's operating process can be divided into two main phases: filtration and cleaning.
1. Filtration Phase:
The liquid to be filtered enters the filter housing through the inlet. Under pressure, the liquid passes from the inside out through a wedge-shaped wire mesh or other precision filter screen. Solid particles are trapped on the inner surface of the screen, and clean liquid flows out through the outlet. Filtration is continuous and uninterrupted throughout the entire filtration process.
2. Cleaning Phase:
When impurities accumulate on the filter's inner surface to a certain level, the pressure differential between the inlet and outlet increases, and the control system automatically initiates the cleaning process:
- Drive: The pneumatic cylinder receives a signal and activates, driving an axial suction scanner or directly driving a scraper assembly, which performs axial linear reciprocating motion within the filter.
- Scraping: The scraper, mounted on the scanner or drive rod, presses against the inner wall of the filter. During this linear motion, the scraper thoroughly removes all impurities adhering to the filter.
- Drainage: The scraped impurities settle under gravity to the filter's bottom sump. Simultaneously, during the cleaning process, the drain valve automatically opens, leveraging the system's inherent pressure differential to instantly and rapidly discharge impurities from the drain outlet. The entire cleaning process takes only seconds, with minimal impact on flow.
- Reset: After cleaning is complete, the pneumatic cylinder resets the scraper assembly, closing the drain valve and allowing the system to resume full-flow filtration.
Key Features and Advantages:
- Fully Automatic Operation: Using pressure differential or time control, the system provides fully automated cleaning and drainage, allowing for unattended operation.
- Continuous Filtration: The cleaning process is performed internally, without disrupting the main production process or requiring downtime.
- Thorough Cleaning: Physical scraping provides strong cleaning power, effectively removing sticky and oily impurities and resisting clogging.
- High Reliability: The mechanical structure is relatively simple, and core components such as the cylinder, scraper, and wedge-shaped filter are extremely durable.
- High-Precision Filtration: High-precision wedge-shaped filters are available, with filtration accuracies ranging from 20 microns to several millimeters.
The Cylinder Scraper Self-Cleaning Filter is a precision filtration device that uses a cylinder-driven scraper to move linearly, removing impurities from the filter screen and achieving automatic cleaning. Its core value lies in ensuring continuous production, reducing labor and maintenance costs, and efficiently handling complex working conditions. It is an indispensable key device for modern industrial fluid handling.
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Nina
Email: nina@filtrationchina.com
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