The utility model discloses an automatic ventilation device for a
sewage well, and provides a solution aiming at the problems of low
manual ventilation efficiency and
high energy consumption of the conventional
sewage well. The device is mainly composed of a jacking
pipe, an air bag and a
gas exchange structure, the jacking
pipe is vertically and slidably arranged below the well lid, the bottom of the jacking
pipe is connected with the air bag, and the
gas exchange structure rotating during jacking is arranged on the well lid. The structure comprises a containing groove and a ventilation plate rotating horizontally, and the top pipe is connected with the ventilation plate through a transmission structure composed of a gear and a rack. The jacking pipe is divided into a
metal section and a plastic section, a guide block is arranged on the well wall to assist the jacking pipe in sliding, and a limiting piece is arranged to control the moving range. The air bag drives the jacking pipe to reciprocate through the change of
water flow in the
sewage pipeline, the ventilation plate is driven to rotate through the transmission structure, and continuous ventilation in the sewage well is achieved. The device does not need external power, can efficiently complete ventilation by means of natural change of
water flow, effectively reduces
energy consumption, solves the problem of ventilation of scattered sewage wells, and guarantees
operation safety and surrounding environment health.