The utility model discloses a COD (
Chemical Oxygen Demand)
digestion device, relates to the technical field of
water quality detection instruments, and solves the problems that when the existing COD
digestion device is not used, a conical flask and a return
pipe are usually directly placed on the COD
digestion device, no protective device is arranged outside the conical flask and the return
pipe, and external dust directly falls on the device when the conical flask and the return
pipe are placed for a long time, so that the subsequent use is influenced. According to the technical scheme, the problems that a conical flask, a
backflow pipe and other glassware are damaged due to the fact that the conical flask and the
backflow pipe are easily touched by mistake, and using is inconvenient are solved, the device comprises a groove body, two L-shaped supports and a main
machine body, the two symmetrical L-shaped supports are fixedly installed on the upper surface of the rear side of the groove body, and the bottom of the main
machine body is fixedly connected with the top planes of the L-shaped supports. According to the utility model, through the matching design of the two L-shaped protective plates and the back plate, the conical flask and the return pipe in the COD digester are sealed and shielded, so that external dust is not easy to directly fall on the conical flask and the return pipe, and the follow-up use is facilitated.