Rotary sealing light distribution device suitable for cylindrical micro algae reactor

The utility model discloses unicellular micro algae culture equipment, in particular to a light source arrangement device for the equipment. In order to improve the light utilization efficiency of a photosynthetic biological reactor, to save the energy sources and to reduce the equipment, the utility model provides a light distribution device suitable for micro algae culture. The light distribution device comprises three parts: a rotary base, a light source and a light collecting cover, wherein the rotary base is in an annular shape, holes are drilled on the base at equal intervals, the light source is fixed on the base holes in a centrosymmetric way, and the light source rotating speed and the light source number can be regulated according to requirements, so the energy is saved, and the surface/volume ratio of the reactor is indirectly improved. A reflecting film is pasted on the inner wall of a light collecting cover, light rays which are not absorbed by the reactor fall onto the surface of the light collecting cover and are absorbed by the reactor again after being reflected by the light collecting cover, and the light energy utilization efficiency is further improved. The reactor obviously saves the energy consumption in the culture process, the light energy-utilization efficiency is high, the micro algae yield can be improved, and in addition, micro algae products with different ingredients can be cultured.