Floating filter material filtering device

The invention provides a floating filter material filter device, which comprises a filter tank provided with a cavity inside and provided with a water inlet device and a water outlet device, and is characterized in that a partition plate is arranged in the cavity of the filter tank and divides the cavity into a water inlet tank with the water inlet device and a water outlet tank with the water outlet device; the water inlet tank and the water outlet tank are communicated through an overflow port lower than the tank top, the water outlet tank is provided with a filter material input pipe, the water inlet tank is provided with a filter material output pipe, and input floating filter materials float on the upper portion of the cavity. Through mutual independence of floating filter material adding, discharging and filtering operation, continuous operation of floating filter material adding, discharging and filtering operation and off-line flushing of the filter material, the precipitation and filtering separation