Cleaning device for ultrafiltration membrane

The utility model relates to the technical field of clean water treatment, and particularly relates to a cleaning device for an ultrafiltration membrane. The cleaning device for the ultrafiltration membrane comprises an ultrafiltration membrane assembly, a back cleaning water tank, a chemical cleaning fluid tank, pipelines, water supply pumps and valves, wherein the top end of the ultrafiltration membrane assembly is serially connected with the water supply pump B1 via a pipeline and then connected with the back cleaning water tank, and the bottom end of the ultrafiltration membrane assembly is connected with the valve C1 via a pipeline; the bottom end of the ultrafiltration membrane assembly is further serially connected with the water supply pump B2 via a pipeline and then connected with the chemical cleaning fluid tank; and an opening in the upper part of the ultrafiltration membrane assembly is serially connected with the valve C3 via a pipeline and then connected with the chemical cleaning fluid tank, and an opening in the upper part of the ultrafiltration membrane assembly is connected with the valve C2 via a pipeline. The cleaning device for the ultrafiltration membrane disclosed by the utility model is simple in structure, capable of performing the operations of back cleaning, chemical cleaning and the like on the ultrafiltration membrane respectively, and capable of effectively improving the cleaning effect, recovering the performance of the ultrafiltration membrane assembly, and prolonging the service life of the ultrafiltration membrane.