Industrial large air quantity fresh air dust chamber

The invention relates to an industrial large air quantity fresh air dust chamber. The dust chamber comprises a dust chamber body. The front end of the dust chamber body is provided with a gravity dedusting chamber. The rear part of the gravity dedusting chamber is provided with an inertia dedusting chamber. The upper part of the joint between the gravity dedusting chamber and the inertia dedustingchamber is provided with an opening. The lower parts of the gravity dedusting chamber and the inertia dedusting chamber are provided with a dust collecting chamber, the gravity dedusting chamber andthe inertia dedusting chamber are communicated with the dust collecting chamber; the rear part of the inertia dedusting chamber is provided with a shunting chamber; the joint between the inertia dedusting chamber and the shunting chamber is provided with air flow baffle plates; a ventilation hole is arranged between neighbored air flow baffle plates, and the lower part of the shunting chamber is provided with a pre-filteri