Automatic leaf filter

NHD leaf filter mainly consists of vessel, head, filter element, liquid collecting manifold, high level tank, pressure relief pot and hydraulic fast open device etc. The filter element is made of plastic grids wrapped by stainless steel perforated plate, which is installed with collecting liquid tube.

During filtration, slurry is pumped into vessel, suspending  solid  in  coarse slurry is separated on the surface of cloth and forms cake; meanwhile, fine filtrate penetrates cloth and goes to collecting liquid manifold through collecting liquid tube, then flows into high level tank, finally overflow into fine liquid vessel. Leaf filter will stop filtration and release pressure in vessel at a filtration time or pressure. Meanwhile fine liquid stored in high level tank counter flows downwards. Fresh cake is  discharged  into  suspending  liquid after back-flush, and will settle in the cone bottom, and then discharge out.

Applications:

The leaf filter can be widely applied in industries of Chemical, Petroleum, Paint, Food, and Pharmaceutical etc.

Competitive Advantage:

• Automatic running, low labor strength, easy operation;
• Running in full enclosure, long life of cloth, no leakage and environmental pollution:
• High efficient self-cleaning, backwash cake discharge, cloth recovery without water consumption, and reduction of evaporation load effectively;
• PLC with touch screen, reliable control;
• Unique triple pressure overloads protection in filter to ensure absolutely safe;
• Hydraulic fast open device: easy to open head;
• High concentration sludge: filter cake settles at the bottom of vessel after stripping from cloth, and will be discharged in the next cycle with long settling time:
• Isolation valves are equipped in order to isolation single element immediately when abnormal occurs;Reliable special pneumatic valve with good dynamic and long life:
• Back-flush pump of pipeline is an optional to enlarge flushing force for belter cloth recovery.