The utility model provides a detachable V-shaped combined beater for a powder separator; a shell 1 is V-shaped rectangle structure with both sides welded with a slide way 2 and the end head provided with a retaining plate 3; a beating body 5 is connected in the shell 1; the beating body 5 is the combination of a plurality of beating units 4; each beating unit has the same V-shaped structure of the shell; each beating unit 4 is a welded piece so that the manufacturing is convenient; the maintenance is convenient; the equipment maintenance time is reduced; the maintainers is avoided from entering the powder interior for replacement and maintenance; thereby, the accident hidden trouble is eliminated; the dust inside the powder separator is avoided from polluting the maintainers.