Negative pressure filtering U-shaped film assembly for water treatment

The utility model relates to a negative pressure filtering U-shaped film assembly for water treatment. The utility model is composed of hollow fiber films 3, an outer shell 2 and a loose joint sealing head 1, wherein the outer shell is a cylinder of which both ends are provided with external screw threads, one end of the outer shell is connected to the loose joint sealing head which is an elliptical sealing head 5 on which a water outlet pipe 4 and a loose joint 6 are arranged, the connecting point between the outer shell and the loose joint sealing head is provided with an O-shaped sealing ring pad 7, the solidified hollow fiber films of a certain quantity, which are integrated to form a bundle, are arranged in the outer shell and the hollow fiber films are bent to form a U shape. Tidily cut U-shaped open ends are arranged in the outer shell and are integrated with the outer shell through adhesion, and the screw threads arranged at the other end of the outer shell are connected to a cleaning device at the time of off-line cleaning. When the U-shaped film assembly is used in the process of water treatment, the U-shaped film assembly can be integrated with an original pool, and the negative pressure generated by a water producing pump connected to the U-shaped film assembly is used as the driving force. The U-shaped film assembly used for film filtration of negative pressure has the advantages of simple manufacturing technology, few auxiliary parts and low cost.