The floating box square flap door consists of four parts: valve seat (valve body), valve plate, sealing ring, and hinge. Circular and square water outlets only used for one-way water flow, with a tight structure and reliable operation, do not require manual operation. The opening and closing force comes from the water source pressure. When the water pressure inside the flap door is greater than the pressure outside the flap door, it will open; Otherwise, it will be closed.

Equipment application scope: Suitable for water conservancy systems, municipal sewage, urban flood control and drainage, sewage treatment plants, water supply plants, etc.

Floating box camera door is a hydraulic mechanical equipment in hydropower engineering, used in rivers, irrigation and drainage stations, and various drainage projects, and is used in conjunction with pipelines. The most widely used photography principles in the industry now include flat panel photography, floating photography, lateral photography, etc. Other types of photography are also variations based on the above photography principles. Floating doors are generally installed on the outlet side of pipeline terminals, such as the edge of rivers, water outlets, etc., mainly serving as check valves to achieve closed vacuum pumping and prevent water backflow. However, the problem with existing technology is that the structure of the door cover for knocking is small, and sometimes it cannot function as a one-way valve (such as in a water pump station with an outlet tank).

In the existing piping system for installing doors, the outlet is usually set on the pipeline that runs through the wall. In cooperation with civil construction, in some cases where the setting needs to be completed before concrete pouring, an outlet needs to be added to the piping during the pumping process to reduce air resistance in the piping, reduce water head loss, and protect the water pump and water pump motor. However, in the case of changes in the pump model in the later stage, there is a major problem that even if this air pipe is changed, technical changes cannot be made.