Valveless Filter

The gravity valveless filter has advantages such as no large valves, positive-head filtration, automated backwashing, low manufacturing cost and easy operation. It is widely used in industrial and agricultural water purification fields, including surface water purification, landscape water purification, lake/river water purification, groundwater iron/manganese removal, waterworks, industrial circulating water side-stream filtration, production wastewater suspended impurity removal, post-filtration of organic wastewater after biochemical treatment and secondary sedimentation, and indoor swimming pool water filtration.

Based on years of production experience and continuous improvement, the company has developed the MLF series improved gravity valveless filter. This upgraded and improved equipment features expanded processing capacities and broader applicability, offering standard treatment capacities of 20T, 40T, 60T, 80T, 100T, 150T, 200T, and 300T per hour. In addition, customized single-tank or multi-tank gravity valveless filters in various specifications can also be manufactured to meet specific user requirements.

Raw water enters the filter through a distribution tank for downward filtration. As the filter bed continuously traps suspended solids from the influent water, the head loss across the filter bed gradually increases, causing the water level in the siphon riser tube to rise. When the rising water reaches the water ejector in the siphon auxiliary tube, hydraulic action removes air from the siphon, creating negative pressure. When the negative pressure reaches the design value, siphon effect occurs, allowing water from the tank to backwash from bottom to top, thereby realizing "regeneration". As the filter bed is continuously backwashed, the water level in the tank drops to the specified value, breaking the siphon effect and ending the backwashing process, and then the filtration unit resumes operation.