Double-layer access door of dust remover

The invention discloses a double-layer access door of a dust remover. The double-layer access door comprises an inner access door, an outer access door and a compressing component used for compressing the outer access door, wherein the compressing component is connected to a dust remover box body; and a plurality of compressing springs are fixedly connected between the outer access door and the inner access door. The inner access door and the outer access door can be arranged on the dust remover box body through a hinge type opening and closing device or a lifting type opening and closing device. The inner access door and the outer access door can be opened and closed at the same time and are convenient to use. After the double-layer access door is closed, a compressing component bolt is screwed, and the inner access door is compressed on the dust remover box body under the action of the compressing springs while the compressing component compresses the outer access door so that the whole dust remover has better leak tightness.