Sample injection pipe fixing device

The utility model discloses a sample injection pipe fixing device which comprises a base, a soft mechanism and a fixing column, the soft mechanism is respectively connected with the base and the fixing column, the fixing column is provided with a fixing through hole in the axial direction, and the fixing through hole is used for clamping an inserted sample injection pipe; the base is used for fixing the fixed column at a beaker opening of a beaker through a soft body mechanism, so that the fixed through hole clamps the sample injection pipe in the vertical direction, and the liquid outlet end of the sample injection pipe is suspended in the beaker; the soft body mechanism is used for fixing the fixed column at the tube opening of the test tube, so that the fixed through hole clamps the sample injection tube along the vertical direction. According to the technical scheme provided by the utility model, the sample injection tube is clamped by the fixed column through the fixed through hole, and the soft body mec