Flue gas purification device for environmental protection

The invention discloses a flue gas purification device for environmental protection, which comprises a supporting bottom plate, and a threaded guide column is fixed on the supporting bottom plate; a limiting side plate is fixed on the dust filtering box body; a limiting through hole is formed in the limiting side plate; the threaded guide column penetrates through the limiting through hole and is in threaded connection with the fastening nut. Buffer springs are installed on the threaded guide columns relative to the positions between the limiting side plates and the supporting bottom plate. First supporting legs are fixed to the bottom of the supporting bottom plate. The lower end of the dust filtering core body is in threaded connection with a lower mounting assembly; the lower mounting assembly is connected with the dust filtering box body; and the upper end of the dust filtering core body is in threaded connection with an upper mounting assembly. The device has the beneficial effects that the device is con