Short-flow-path water purifying device utilizing immersive ultrafilteration membrane as core

A short-flow-path water purifying device utilizing an immersive ultrafilteration membrane as a core is characterized by comprising a mixing pond, a flocculation pond, an ultrafilteration membrane pond, a water pump, ultraviolet treatment equipment and a water yielding tank. Raw water flows through the mixing pond and the flocculation pond and then enters the ultrafilteration membrane pond, an ultrafilteration membrane realizes filtering operation by the aid of negative pressure formed due to suction of the water pump at the rear of the ultrafilteration membrane, a water outlet tube of the water pump is connected with a water inlet of the ultraviolet treatment equipment, and a water outlet tube of the ultraviolet treatment equipment is connected into the water yielding pond. The short-flow-path water purifying device with the combination process can effectively resolve the problem that water of water sources is polluted recently, and guarantees that organic matters of ultrafilteration outflow water are further reduced and the ultrafilteration outflow water meets new national drinking water standards by the aid of ultraviolet oxygenolysis. Simultaneously, the short-flow-path water purifying device with the combination process can avoid the problem of sterilization by-products due to traditional chlorine sterilization, is easy to be popularized on a national scale, is particularly applicable to realizing new construction and modification of water plants of regions with polluted water resources, and is applicable to water treatment of rural areas with polluted water sources and small-sized water stations.