Microbial limit filtering device

The utility model discloses a microbial limit filtering device which comprises a machine box, two symmetrical filtering ends are fixedly installed at the top of the machine box, a filtering groove is formed in the top end of each filtering end, two sets of symmetrical fixing rods are fixedly installed at the top of the machine box, and the top ends of the two fixing rods in the same set are each connected with a sliding block in a sliding mode. Two sliding blocks are arranged at two ends of the filter end, a filter pressing disc is fixedly connected between the two sliding blocks, two symmetrical clamping blocks are slidably mounted in the filter pressing disc, and the two clamping blocks are movably clamped in the filter end. The clamping block is extruded towards the interior of the filtering end head through the pushing block, so that the filter pressing disc is conveniently separated from the filtering end head, and when the filter pressing disc does not work, the filter pressing disc is always located ab