| 摘要 |
PROBLEM TO BE SOLVED: To prevent a flow path from being cooled at a time of vacuum deterioration due to a stop, etc., of a refrigerator by providing a temp. keeping means at one side of a wall of a cylindrical container or a wall of an air-core electromagnet vacuum container, in the device for removing magnetic particles in water to be treated by attraction with use of the magnetic gradient generating in the inside of the cylindrical container. SOLUTION: A high gradient magnetic filter 4 and an electrode 3 are arranged in a pressure container 2 allowing raw water containing the magnetic particles in a raw water tank to flow in flow a lower part inlet 1 and also the superconductive air-core electromagnet 6 is arranged in a vacuum container 8 and is cooled with a helium refrigerator 9 to keep it in a superconducting state. The electromagnet 6 generates a uniform magnetic field in the pressure container 2, thus the magnetic particles in the raw water are collected on a specified fine line surface of the filler and purified raw water is fed from an upper outlet 5 to a treated water tank. In this case, a heating plate 16 consisting of a high heat transfer coefficient member is wound around a side fade of the pressure container 2 and a heater 15 is fixed to it. Thus, it is prevented from being cooled the pressure container 2 and solidified the water in the inside. |
