Inner Scraper Self-Cleaning Filter

• Fully automatic operation, 24-hour continuous on-line filtration;
• Automatically discharge waste liquids containing high concentration impurities that can be recycled to reduce the loss of high value materials;
• Closed filtration to prevent the leakage of hazardous materials and ensure the work safety and employee health;
• Stainless steel sheet scraper and stainless steel brush scraper are employed to offer great scraping effect, which significantly improves its impurity removal capacity and avoids crushing impurities;
• Backwash function can be added to help cleaning filter elements;
• PLC-based control system is adopted to control scraping and draining time.

The liquid flows in from the inlet (1), flows through the filter element and then flows out from the outlet (2). Impurities are trapped on the inner surface of the filter element. When impurities trapped on the surface of the filter element accumulate to a certain amount, the cleaning procedure is initiated by a timer setting or triggered by a differential pressure sensor. The speed reducer or cylinder (4) drives the scraper blades (6) attached to the surface of the filter element to rotate and scrap off the impurities. These impurities fall into the bottom of the filter. Drain valve (3) at the bottom of the filter shall be opened regularly to drain out the high concentration liquid for recycling.