Multifunctional automatic reflux digestion instrument for COD (Chemical Oxygen Demand)

The utility model provides a multifunctional automatic reflux digestion instrument for COD (Chemical Oxygen Demand), which relates to the technical field of reflux digestion instruments and comprises a machine body, a control panel is fixedly mounted on the surface of the machine body, a reflux pipe is mounted on the top surface of the machine body, a bent frame is fixedly mounted on the side surface of the machine body, and a sliding rod is arranged on the side surface of the bent frame in a penetrating manner. The sliding rod is slidably connected with the bent frame, a protection plate is fixedly installed at one end of the sliding rod, a magnet A is fixedly installed at the other end of the sliding rod, a magnet B is fixedly installed on the surface of the sliding rod, and a heat insulation plate is fixedly installed on the bottom face of the protection plate and is made of glass fibers. According to the utility model, the control panel can be protected through the protection plate, so that the control pa