Slit adjustable device of spectrophotometer

The utility model discloses a slit adjustable device of a spectrophotometer, which comprises a screw rod mechanism assembly, and a grating assembly is fixed at the upper end of the screw rod mechanism assembly; the slit assembly is arranged on the left side of the grating assembly, a first slit plate is arranged on the left side of the interior of the slit assembly, and positioning bolts penetrate through the left side and the right side of the slit assembly; the second slit plate is arranged on the right side of the first slit plate, and the second slit plate and the first slit plate are matched in appearance structure. According to the adjustable device for the slit of the spectrophotometer, the width between the slit plate I and the slit plate II can be automatically adjusted according to requirements, the influence on the precision of the spectrophotometer due to manual adjustment during use is avoided, the slit plate I and the slit plate II can be more stable during adjustment, and the influence on subse