Frame structure of air filter

The utility model relates to a filter technology field especially relates to a frame structure of air filter, including outer frame, the right angle department of outer frame is provided with and connects the angle, connect the angle including setting up in the L type folded plate of outer frame right angle department and the sideboard that lies in these L type folded plate both sides, L type folded plate and two the sideboard encloses to establish and forms the right angle storage tank, be provided with the flexible glue board in the right angle storage tank. During the use, aim at the direct holding in right angle on the outer frame in the right angle storage tank of connecting the angle to carry out fixed connection with flexible glue board contact, the process of need not to cut the oblique angle, connect the angle unloading, punch for twice, polishing in four right angles etc. Installation procedure is simple, and is very convenient, saves time, improves the installation effectiveness, simultaneously, be