The utility model provides a constant
temperature control system of an oil
chromatography on-line monitoring device, which comprises a base plate, a frame is fixedly arranged at the top of the base plate, a bearing plate is fixedly arranged at the top of the frame, a box body is fixedly arranged at the top of the bearing plate, and a driving mechanism is arranged at the rear end of the box body. A bearing mechanism is fixedly installed on the front face, located in the box body, of the driving mechanism. According to the device, the driving mechanism is matched with the bearing mechanism, the use efficiency of the device can be further improved, and in the
temperature control process during use, a driving motor drives a gear, a gear ring and a
slip ring to rotate, so that the bearing mechanism rotates and drives the
chromatographic column to rotate between an inner heating wire and an
electric heating wire to realize uniform temperature rise, or the
chromatographic column is in full contact with heat dissipation air to improve the heat dissipation effect; the closed door on the front side of the box body is fixed through the locking screw rod, when the
chromatographic column needs to be taken and placed, the screw rod is loosened, the sliding plate is pulled out, and the bearing net cylinder can be conveniently assembled and disassembled, so that the operation process is simplified and the convenience and flexibility of device use are enhanced.