Efficient and Uniform Screen Cleaning Performance  

GFK Series self-cleaning filter cleans and regenerates the screen by the suction nozzle scanning back-flushing working principle. Only less than 0.1% minimum filter area will be back-flushed at the same time during cleaning. So the screen can be completely cleaned by the extremely high velocity reverse flow and 100% surface area can be efficiently and uniformly cleaned. The outlet pressure fluctuation is very low and the waste water discharges is less when back-flushing. Some automatic candle type filters have dead conners that cannot be cleaned completed. About 20%-40% of the filter candle end part gets clogged all the time especially if the filtration degree is finer than 100 μm. When filtering the turbid water, automatic candle type filters get clogged quickly and even fail to work.

Contact Suction Nozzles  Closer Cleaner

The spring-loaded contact suction nozzles (Patent Pending) can back-flush fine particles out of the screen inner surface. The suction nozzle moves close to the screen inner surface, which greatly reduces the un-filtered water around the nozzle flowing into the nozzle when back-flushing. Most of the water comes from the filtrate opposite the nozzles. It greatly increases the back-flushing velocity and intensity, correspondingly increases the back-flushing performance and reduces discharged back-washing water waste. Even when filtering the turbid water with the fine screen, the screen can be back-flushed clean completely and the flow rate keeps stable. This kind of back-flushing principle is the most efficient in current water self-cleaning filters and can guarantee the stable operation of water treatment system. We recommend the GFK series self-cleaning filter with non-contact suction nozzles for filtration degree larger than 200μm or water with less impurities. The nozzles keep distance from the screen inner surface and can back-flush out the larger particles, which reduces the pre-filtration requirement.

High Flow Rate, Easy to back-flush, Accurate Apertures 

HyperSEP series is a special 4-layer screen developed for GFK series self-cleaning filters. The liquid flows from inside to outside and passes the protection layer, filtration layer, distribution layer and the reinforcing layer. Four layers are optimized and laminated. The protection and distribution layers are designed with large mesh, and the filter layer is rarely blocked. So the filtration layer area can be 100% used. This kind of optimized structure makes sure that the filtration layer is effectively back-flushed clean. HyperSEP's real effective filtration area is about 40% higher than the effective filtration area of candle type filter elements at the same screen area. HyperSEP filtration degree ranges from 15μm-300μm. The filtration layer is precisely weaved and has extremely accurate filtration apertures. It can efficiently remove the suspended solids, sediments, Zooplanktons and Phytoplanktons, Two material 316L and 904L are available, 316L is suitable for ordinary water resistance requirement while the 904L is for long-term sea water resistance requirement. HyperSEP is applicable to turbid sea water and can filter and be back-flushed normally.