Crawler-type automatic microfilter

A crawler-type automatic microfilter is disclosed and comprises a water tank body, a flexible fence, a filter screen support, a filter screen belt and a height adjusting device, wherein an opening is formed in one side face of the water tank body; the flexible fence is arranged at the opening and used for enclosing the opening; the lower end of the filter screen support is rotatably hinged to the tank bottom of the water tank body, the upper end of the filter screen support is connected with the upper end of the flexible fence, the left end and the right end of the filter screen support abut against the left inner tank wall and the right inner tank wall of the water tank body respectively, the upper end and the lower end of the filter screen support are provided with an upper rotating roller and a lower rotating roller respectively, and the upper rotating roller is located outside the water tank body; the filter screen belt is wound on the upper rotating roller and the lower rotating roller; the inner cavity