Sundry cleaning device for air ring chamber of coal mill

The invention discloses a sundry cleaning device for an air ring chamber of a coal mill, which comprises a cleaning unit, a supporting assembly, a driving assembly arranged at the bottom of the supporting assembly, a separation assembly arranged at the top of the driving assembly, a limiting opening and closing assembly arranged at the bottom of the separation assembly, and an extrusion limiting assembly arranged on one side of the limiting opening and closing assembly. The device has the beneficial effects that sundries falling from the air ring chamber are collected through the limiting opening and closing assembly, the weight of the sundries gradually pushes the limiting opening and closing assembly to extrude downwards to complete unlocking, the top of the limiting opening and closing assembly is closed, and the driving assembly is started to push the separation assembly so that the separation assembly can separate and block the collection frame; and the driving assembly continues to push the extrusion li