Ion chromatographic column thermostat

The utility model discloses an ion chromatographic column constant-temperature box which comprises a constant-temperature box body, a control box is fixed on the right end face of the constant-temperature box body, the constant-temperature box body is connected with a box door through a hinge, a motor is fixed on the upper end face of the constant-temperature box body, and a rotating shaft is fixed at the output end of the motor. The rotating shaft bearing is connected into the constant temperature box body; the base plate is fixed to the rotating shaft, a movable plate is arranged above the base plate, the rotating shaft penetrates through the movable plate and can move up and down, and meanwhile an ejector block is arranged in an open groove in the movable plate; and the movable frame is arranged below the rotating shaft. According to the ion chromatographic column constant-temperature box, the adjustable elastic limiting mechanism is used, so that the ion chromatographic columns with different sizes can be