1results about How to "Backwash thoroughly" patented technology

The application discloses a variable-speed filter device, which comprises a filter tank body, a water distribution plate arranged horizontally in the filter tank body, a water collecting area below the water distribution plate, a water inlet baffle and a backwashing baffle arranged vertically from the upper portion of the water distribution plate to the top of the filter tank body, a double-ring type variable-speed water distributor arranged between the water inlet baffle and the backwashing baffle, a graded pad layer arranged above the water distribution plate between the water inlet baffle and the backwashing baffle, and graded filter material arranged in the graded pad layer; a water inlet is arranged on the upper portion of one side of the filter tank body, a backwashing side flushing port is arranged on the backwashing baffle; a water inlet electric adjusting mechanism is arranged at the water inlet and used for controlling water inlet and reverse side flushing. The variable-speed filter device is more reasonable in design of filter water inlet and backwashing filter speed, more stable in water outlet, and better in cleaning and backwashing effect.