Negative pressure type kiln body for lime production

The utility model provides a negative pressure type kiln body for lime production, which belongs to the technical field of lime production, and comprises a kiln body main body, a heat preservation cavity, an air inlet pipe, an air outlet pipe, an air outlet pipe and an air outlet pipe, and is characterized in that the heat preservation cavity is arranged in the kiln body main body; the negative pressure assembly comprises an exhaust pipe communicated with the heat preservation cavity; and the filtering structure is arranged on the negative pressure assembly and comprises a connecting frame capable of swinging left and right through wind kinetic energy, and a filtering net used for filtering smoke is arranged in the connecting frame of the filtering structure. The negative pressure fan has the advantages that when the mounting frame moves to collide with the elastic piece, the mounting frame can be sprung to move, so that the mounting frame swings left and right, the filter screen is prevented from being block