Film stack structure of film

The membrane stack structure comprises a frame, a water inlet header pipe is fixedly connected to the top of the left end of the frame, a plurality of sealing rings are fixedly connected to the middle of the outer diameter of a central water production pipe, and membranes are fixedly connected to the positions, close to the left side and the right side of the sealing rings, of the outer diameter of the central water production pipe. End parts are fixedly connected to the left side and the right side of the outer diameter of the central water production pipe, four aeration branch pipes are fixedly connected to the bottom of the right end of the aeration main pipe, and a plurality of aeration holes are formed in the tops of the aeration branch pipes. According to the utility model, a plurality of membranes are combined into the membrane stack to form a structure of peripheral liquid inlet treatment and central water outlet, so that the sufficient membrane contact area is ensured, and the aeration branch pipes a