Improved multi-impurity flue impurity-removing device

The invention relates to the technical field of industrial production of edible mushrooms, specifically to an improved multi-impurity flue impurity-removing device used for production of needle mushrooms. The multi-impurity flue impurity-removing device comprises a spray tower used for primary cleaning of smoke, a flue gas cleaning and dust removing device used for secondary deep cleaning and dust removing of the smoke, and an exhaust device used for discharging flue gas achieving the emission standard after cleaning and dust removing into the air, which are connected together through a pipeline. The flue gas cleaning and dust removing device comprises a cleaning and dust removing shell and a cleaning and filtering device disposed in the cleaning and dust removing shell. The multi-impurity flue impurity-removing device comprises the spray tower used for primary cleaning of smoke, the flue gas cleaning and dust removing device used for secondary deep cleaning and dust removing of the smoke, and the exhaust device used for discharging flue gas achieving the emission standard after cleaning and dust removing into the air, which are connected together through the pipeline. The flue gas cleaning and dust removing device comprises the cleaning and dust removing shell and the cleaning and filtering device disposed in the cleaning and dust removing shell.