Efficient polishing device for pipe joint

The utility model discloses an efficient pipe joint polishing device which comprises a base, a protective cover is connected to the upper end of the base in an inserted mode, a telescopic rod is fixedly connected to the interior of the base, a fixing block is fixedly connected to one end of the telescopic rod, an outer fixing column is rotationally connected to one end of the fixing block, and an inner fixing column is rotationally connected to the end, close to the inner wall of the outer fixing column, of the fixing block. A sliding groove is formed in the upper end of the base, an expansion piece is fixedly connected to the upper end of the side, close to the sliding groove, of the base, a sliding column is fixedly connected to one end of the expansion piece, and a grinding machine is fixedly connected to the upper end of the sliding column. The efficient polishing device for the pipe joint has the advantages that the pipe joint can be rapidly polished, the outer wall and the inner wall of the pipe joint c