Air purification and filtration device for modified plastic production

The invention relates to the technical field of modified plastic production assisting equipment, in particular to an air purification and filtration device for modified plastic production. The devicecomprises a screw barrel vacuum chamber, a tank body and a vacuum pump which are sequentially connected through a vacuum pipeline; a first filtering mechanism and a second filtering mechanism which are detachably connected with the tank body are arranged in the tank body; a filtering medium is injected into the tank body, the first filtering mechanism is arranged in the filtering medium, and the second filtering mechanism is arranged above the filtering medium; an air inlet connected with the screw barrel vacuum chamber through a vacuum pipeline is formed in one end of the first filtering mechanism, and an air outlet connected with the vacuum pump through a vacuum pipeline is formed in the upper end of the tank body. Hot-melt steam flow flows through the first filtering mechanism and the second the filtering mecha