Stand column type UV-C ultraviolet disinfection device of disinfection machine

The invention relates to a stand column type UV-C ultraviolet disinfection device of a disinfection machine. The stand column type UV-C ultraviolet disinfection device comprises disinfection units, positioning stand columns, a positioning frame disc, a transmission element and power elements, wherein each disinfection unit consists of a UV-C ultraviolet lamp, a lamp holder and a lampshade plate; each UV-C lamp is arranged on each lamp holder in a quick-release manner; the inner wall surface of each lampshade plate is a reflecting surface for totally reflecting UV-C ultraviolet light; and the outer wall surface of each lampshade plate is a shielding surface. On one hand, a plurality of disinfection units are distributed in the circular array to form a 360-degree annular disinfection area, light rays emitted from every two adjacent disinfection units can be in cross complementation, the same-wave-band reflection of reflection surfaces is combined, ultraviolet illumination intensity is enhanced, disinfection and