Gravure printing machine oven waste heat recovery device

Patent name gravure printing machine oven waste heat recovery device patent applicant Zhejiang Meige Machinery Co., Ltd. Principal Applicant Address 311300 Zhejiang Province Lin'an City Jincheng Street Xinxi Industrial Cluster No. 8 Inventor Liu Guofang Application (Patent) No. 200510050285.0 Application Date 2005.04. 18 Certification Date Approval Notice No. 1676324 Approval Notice Day 2005.10.05 Instruction CD No. D0540 Main Classification No. B41F9/06 Classification No. B41F9/06 Subdivision Original Application No. PRIORITY AGREEMENT Abstract The present invention relates to a method for drying a gravure printing machine. System waste heat recovery and utilization device. The technical problem to be solved is to overcome the deficiencies of the background art and provide a device capable of fully recovering the waste heat of the oven of the gravure printing machine. The device should have the characteristics of simple structure, low cost, convenient installation and production, and obvious energy-saving effect. The technical proposal is: the oven waste heat recovery device of the gravure printing machine, which comprises an oven air supply pipe and an air suction pipe. The device also includes a waste heat recovery box made of a thin metal plate. The box body is provided with a plurality of substantially parallel and outer circumferences. The waste heat pipe with fins on the surface, the two ends of the waste heat pipe communicate with the suction pipe and the exhaust pipe respectively, and on the other two sides of the waste heat recovery box, one side directly communicates with the outside air and the other with the air supply pipe. The suction outlets are in contact with each other, and all the waste heat pipes are arranged at the suction outlet of the air supply duct. The waste heat pipes can also be arranged in several layers in the waste heat recovery tank. Sovereign item 1, a waste heat recovery device for an oven of an intaglio printing machine, including an oven air supply pipe (2) and an air suction pipe (3), characterized in that the device further includes a waste heat recovery box (7), and the waste heat recovery box is A box made of a thin metal plate, the box body is provided with a plurality of waste heat pipes (8) which are substantially parallel to each other and have a fin on the outer circumferential surface. The two ends of the waste heat pipes are respectively welded and fixed in the waste heat recovery box. On the side of the isolation plate (7-1), and both ends of the waste heat pipe communicate with the suction pipe and the exhaust pipe respectively, and the other two sides of the waste heat recovery box are open. One of the openings directly communicates with the outside air, and the other The opening is in contact with the air inlet portion of the air supply duct, and all the waste heat pipes are arranged at the air inlet portion of the air supply duct so as to block the entire cross section of the air flow. International Application International Publication Entering Country Date Patent Agency Hangzhou Jiuzhou Patent Office Co., Ltd. Agency Address Agent Wang Hongxin; Tang Zhengzhong