Multistage filtering type quartz sand filter

The utility model discloses a multistage filtering type quartz sand filter which comprises a first filtering device, a second filtering device is arranged above the first filtering device, the structure of the first filtering device is the same as the specification of each component, the second filtering device comprises a tank body, the bottom end of the tank body is fixedly connected with a plurality of support legs, and the support legs are fixedly connected with the bottom end of the tank body. Grooves are formed in the supporting feet, a first water outlet pipe is fixedly connected to thebottom of the tank body, one end of the first water outlet pipe is communicated with an inner cavity of the tank body, a first electronic valve is arranged in the first water outlet pipe, a box bodyis arranged in the tank body, a first quartz sand layer is arranged in the box body, and a second electronic valve is arranged in the second quartz sand layer. Multi-stage filtering of the quartz sandfilter is achieved through