Water filtration system capable of performing fixed-point filtration

The utility model discloses a water filtration system capable of performing fixed-point filtration, belonging to the technical field of spare parts detection. The water filtration system comprises a water tank and a water outlet formed in the upper part of the water tank, wherein a three-way pipe communicated with the water tank through a fixed valve is arranged at the bottom of the water tank; a branch pipe of the three-way pipe is sequentially communicated with the water outlet through a water pump and a filter; another branch pipe is sequentially connected with a movable pipe through a mobile valve and a hose; the movable pipe is a rigid pipe; and a trumpet-shaped opening is formed in the front end of the movable pipe. According to the technical scheme, the three-way pipe is arranged at the bottom of the water tank, and two branch pipes of the three-way pipe are respectively connected with the water outlet and the movable pipe, and thus impurities such as sand and scrap iron at the bottom of the water tank and rust floating at any position in water can be cleaned at fixed points through the movable pipe when the cyclic filtering and cleaning of the water tank are achieved.