Gravity automatic backwash sand filtration device with elevated reservoir

摘要

To provide a gravitational automatic backwash sand filtration apparatus with an elevated water storage tank, which does not require separately setting a high place water storage tank for supplying filtered water to each breeding aquarium.A backwashing water tank 2 disposed under the elevated water storage tank 1 for storing backwash water, a lower portion of the backwashing water tub 2 , A treated water tank 4 disposed in the lower part of the filtration chamber 3, and a filtration material 10 disposed between the filtration chamber 3 and the treated water tank 4, At the time of water storage, the water sent to the filtration chamber 3 is filtrated by the filtering material 10, then sent to the back washing water tub and the elevated water storage tank 1 via the treated water tank 4, stored, and the water to be treated Sometimes, the water stored in the elevated water storage tank 1 is supplied by gravity, and when the filter material 10 is backwashed, the water stored in the backwash water tank 2 is sent to the treated water tank 4 by gravity and the filter material 10 After washing, it was discharged to the outside via the filtration chamber 3.BACKGROUND OF THE INVENTION