The invention relates to a closing device for a
vestibule of a
belt conveyor, and belongs to the technical field of bulk material conveying. The closing device comprises a
machine cover arranged above a bearing section,
doors which are arranged on the two sides of the bearing section and the two sides of a return
stroke section and can be opened and closed and a material falling baffle arranged below the return
stroke section. The
machine cover, the
doors and the material falling baffle are connected in a sealed manner to form a closed
enclosure structure, so that the bearing section and the return
stroke section are contained in the
enclosure structure, and an overhaul channel is exposed out of the
enclosure structure. Closed conveying of materials on the bearing section and excess materials on the return stroke section is realized, and the problem of dust escape is effectively solved. The overhaul channel is not closed, the
closed space is more compact, and the closed work amount and investment are reduced. The
working environment of workers is improved, and abnormal stuffiness at high temperature is avoided. The
doors can be opened and closed, and material cleaning and equipment overhaul are convenient. The device can be implemented in closed transformation of outdoor truss type vestibules in coastal areas in the south, can be further used for closed transformation in wall frame type closed vestibules in the north to improve the
working environment, and is wide in application prospect.