| 摘要 |
PURPOSE:To carry out safety operation by providing three kinds of temperature- regulating mechanism while the raising-temperature treating process, by opening and closing automatically a main damper, a diluting damper, an opening and closing duct and an emergency damper in accordance with the gas temperature to regulate the gas concentration. CONSTITUTION:At >=250 deg.C 1st preset temperature, only a heating and cooling damper 8 and a main damper 2 are opened and the 1st temperature-regulating mechanism 18 is regulated so as to feed the cooling air by a fan 3. At <=350 deg.C 2nd preset temperature, the heating and cooling damper 8 is closed and the opening and closing damper 10 is opened together with the main damper 2, and the 2nd temperature-regulating mechanism 13 is regulated to suck the exhaust gas and to deodorize and oxidize said gas. At <=550 deg.C 3rd preset temperature, the opening and closing damper 10, the main damper 2, and further the diluting damper 9 are opened to deodorize and oxidize the exhaust gas. At >=550 deg.C, the emergency damper 12 is opened to release the exhaust gas and an opening and closing damper 10 is closed to shut off the back fire. |
