Valveless filter and water treatment device using the valveless filter

Abstract

The invention discloses a novel valveless filter and a water treatment device, and relates to the technical field of water treatment. Among them, a new type of valveless filter, the filter body and the backwash pump, the bottom of the filter body is provided with filter sand, and the side wall of the filter body away from the filter sand is provided with a water inlet to be filtered and a backwash water outlet. There is a non-return piece at the filter water inlet, and the backwash outlet is connected to the external mechanism; the backwash pump is provided with a water suction port and a water outlet, the water suction port is connected to the external container carrying clean water, and the water outlet is connected to a filter tube. The end of the filter tube away from the water outlet is provided with a filter cap and extends into the filter sand inside the filter main body. The above scheme removes the valve structure in the prior art, and reuses the outlet of the existing filtered clean water and the water inlet of the backwash clean water, simplifies the filter structure, and helps to realize the new valveless filter. It is miniaturized, realizes the operation under the liquid, is easy to operate, and fully guarantees the filtration capacity of the filter.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a valveless filter and a water treatment device using the valveless filter. Background technique [0002] The pollution problem caused by water in towns and villages in our country is becoming more and more serious. In the urban-rural integration zone, in rural areas or in areas where urban sewage pipe networks are difficult to reach, the produced water is generally directly discharged into rivers, making river water pollution more and more serious. The construction of a facility-type sewage treatment plant requires a relatively large investment and a long cycle, which cannot meet the actual development needs of township sewage treatment. The random discharge of township sewage has become one of the main factors for the deterioration of water quality in the basin; therefore, controlling the pollution of domestic and industrial sewage in townships has become an important ...

AI Technical Summary

Problems solved by technology

However, from Figure 8 It can be seen from the figure that the existing filtering devices with backwashing function are usually provided with 4 interfaces and valves - water inlet valve 27, water outlet valve 28, backwash valve 29, backwash drain valve 30, the above structure not only It is not conducive to the miniaturization of equipment, and it is also very inconvenient in the control operation of filtration and backwashing

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