Biological strain feeding mechanism for purifying breeding tail water

The utility model discloses a biological strain putting mechanism for purifying breeding tail water, a putting barrel is correspondingly mounted in a mounting cavity and is movably arranged in the height direction of the mounting cavity, the putting barrel comprises a top part and a plurality of stock bins connected in sequence, each stock bin comprises a bottom plate and a supporting column connected to the upper surface of the bottom plate, and a linear driver is arranged corresponding to the putting barrel; according to the biological strain feeding mechanism for purifying the breeding tail water, the free end of the supporting column of the current stock bin is detachably connected with the lower surface of the bottom plate of the previous stock bin, and therefore one-by-one installation and one-by-one filling of the stock bins can be completed; and when the linear driver drives the putting barrel downwards, the material bins are exposed out of the bottom of the mounting cavity one by one, and then gradua