Affiliation:
1. Shenyang Fire Research Institute, Shenyang China
2. Key Laboratory of Fire Scene Investigation and Evidence Identification Ministry of Public Security, Shenyang China
3. Chifeng City Karqin Banner Fire Rescue Brigade, Chifeng China
Abstract
Small metal meltdown at the fire scene is one of the main physical evidence used by the fire department in the investigation of the cause of the fire. The mixture of metal meltdown and fire scene residue is mainly composed of steel, copper, aluminum, plastic, and burned carbides. According to magnetic roller structure, the magnetic field distribution and particles in the process of separating force and motion analysis and calculation, design the fire scene molten metal fall separator, according to the orthogonal experiment to discuss the separation of different parameters under the effects of the parameters on the separation and through discussing the separation efficiency of parameter under this experiment device of optimal parameter setting and the optimal picking area design. The sorting machine overcomes the shortcomings of low efficiency and easy omission in the past, which completely rely on manual screening of melted objects in the fire scene, and greatly improves the efficiency and accuracy of fire investigation.