Boiler flue gas waste heat utilization equipment

The invention belongs to the technical field of boilers, particularly relates to boiler flue gas waste heat utilization equipment, and aims to solve the problems that most of existing flue gas is directly discharged after being filtered, waste is caused, meanwhile, a filter screen in the prior art is positioned through a plurality of bolts, the bolts need to be arranged one by one when the filter screen is disassembled, and the cost is high. In order to solve the problems that in the prior art, a filter screen can be disassembled only by rotating multiple times, and the filter screen is inconvenient to disassemble, the following scheme is provided that the waste heat utilization device comprises a waste heat utilization shell, a motor is fixedly installed at the top of the waste heat utilization shell, the bottom end of an output shaft of the motor extends into the waste heat utilization shell, and an isolation plate is fixedly installed on the inner wall of the waste heat utilization shell; the device has th