Unpowered continuous precise water filter

The invention relates to an unpowered continuous precise water filter and belongs to a water filtering device which is used under the conditions of a continuous power supply and long-term reused filtering materials, the condition being free from an external power source or the condition of a no-electricity small space. The unpowered continuous precise water filter is used for solving the technical problems of a traditional filtering device taking a comet-like fibrous filtration medium as a filter medium that a volume is huge, an external power is required for backwash and the filtering device cannot be used under a small-space condition. The technical scheme in the invention is that the unpowered continuous precise water filter comprises two sets of hollow sealing cavities, four sets of multi-position ball valves, two sets of two-way ball valves, comet-like fibrous filtration mediums filled in the hollow sealing cavities, a steel base and corresponding pipelines in loop connection, wherein each set of the hol