Self-cleaning filters are designed to separate oversized contaminated particles from liquids. The device can filter particle sizes between 100 to 10 microns, depending on the filter type and the liquid being filtered.
The role of an automatic self-cleaning filter allows liquid to be continuously filtered through the machine while keeping the insides of the machine clean simultaneously. The mechanical scrapers inside the filter remove oversized materials stuck on the machine’s surface. This process is automated to avoid manual intervention.
The contaminated coolant/oil is pumped from the application into the self-cleaning filter from the top and flows into the inner diameter of the drum. The contaminants are retained on the inner diameter while the clean coolant flows past the outer diameter and out of the filter drum. The clean coolant is drawn out by pressure into the exit or outlet port. As the contaminant layer or cake builds up, the differential pressure increases. At a pre-set pressure, the drain port opens up and the sludge is pushed out of the machine by a geared brush/scraper. Once the flushing cycle is completed, the brush/scraper is stopped and the drain valve shuts. The drain valve can be connected to oil recovery systems for further oil recovery from the sludge. These filters operate from inside to outside where the brushing/scrapping occurs inside the filter.
In the vertical type self-cleaning filter, the contaminated coolant is passed into the filter through an inlet pipe placed at the top. The vertical drum filter will collect the dirt and the clean filtered coolant will be discharged through an outlet pipe at the bottom.
High temperature self-cleaning filter types are mainly used in food and beverage, chemical and coating Industries. These filters are essential for handling operations that deal with high temperatures, withstanding temperatures up to 70 °C (160 °F). These devices can be customized to handle higher temperatures.
- No requirement for manually cleaning clogged filtration systems.
- Filtration capacity: 250 LPM to 1000 LPM.
- Uninterrupted system flow with automated backwash.
- The back-washing facility is short and consumes less water.
- Backwashing pressure can be adjusted.
- Compact design.
- Steel roll mills
- Lubricating oil
- Marine plants
- Food and Beverage
- Process cooling
- High-temperature applications – chemical, food & beverage
- Wide applications with water
- Effluent Treatment Plants (ETP)