Environment-friendly purification device for waste gas in cement kiln

The utility model discloses an environment-friendly purification device for waste gas in a cement kiln, and relates to the technical field of cement kiln waste gas treatment. The device comprises an air inlet pipe, a valve is fixed on the outer side of the air inlet pipe, and a first threaded pipe is fixed at one end of the air inlet pipe; the inner ring of the first threaded pipe is in threaded connection with a solid filter; the solid filter comprises a filter pipe, a second threaded pipe is fixed at one end of the filter pipe, and the first threaded pipe is in threaded connection with the second threaded pipe; a plurality of threaded holes are formed in the surface of the mounting plate. Under the action of the solid filters, the number of the solid filters can be flexibly increased or decreased according to the pollution degree of cement kiln waste gas, the solid filters are arranged to be of a detachable structure, and after being used for a period of time, two adjacent filter pipes can be detached, so t