Air inlet pipe connecting structure and air purification device

The utility model relates to the technical field of air inlet pipes, and particularly discloses an air inlet pipe connecting structure and an air purification device, which are characterized in that a second air inlet pipe is arranged on the side surface of an air purification device main body, a sliding block is arranged on the side surface of the second air inlet pipe, a vertical plate is arranged on the side surface of the sliding block, a positioning plate is arranged in the vertical plate, and a positioning rod is arranged at the bottom of the positioning plate; a baffle is arranged on the side face of the air inlet pipe. The air inlet pipe connecting structure and the air purification device have the advantages that when the air inlet pipe needs to be detached, the positioning plate is pulled to enable the positioning rod to be separated from the positioning groove, so that the air inlet pipe can be taken out from one end of the second air inlet pipe, and then the interior of the air inlet pipe and the