An annular pressure filtering device without filter material

Abstract

The invention discloses a ring-pressure non-filter material filtering device, which consists of a filter main body, an end cover, N filter net pipes, a clear water release valve, a backwash water inlet valve, a sewage water inlet valve, and a backwash sewage discharge valve. , sealing ring, the outer area of ​​the filter body is the sewage tank, the middle area is the filter tank, the filter body and the end cover form a clean water tank, the filter body is provided with a support tube, and the filter net tube is covered on the periphery of the support tube. The clean water release valve and backwash water inlet valve are set on the end cover, and the sewage water inlet valve and backwash sewage discharge valve are set on the sewage tank. After using this filter device, the volume is not limited because no filter material is needed. , the annular pressure filter without filter material is small in size, easy to manufacture, and has a good filtering effect, and the same structure can be used for coarse, fine, fine, micro, ultrafine, and sub-ultrafiltration filtration, which has high versatility and saves energy. , easy to use, under normal circumstances, backwashing can complete the self-cleaning function, and it can also be disassembled for thorough cleaning or maintenance and replacement of the filter screen, which is very applicable and popular.

Description

technical field [0001] The invention relates to a filter device, in particular to a filter material-free filter device used in various industrial waste water, domestic sewage, laundry room, bathroom, swimming pool and other sewage treatment fields. Background technique [0002] At present, most of the filters on the market are filtered through the filter material. During its use, the filter needs to be washed frequently, and even the filter material needs to be replaced frequently. Moreover, it is time-consuming and labor-intensive to use the filter material to filter, and the filter tank occupies a large area. The flow space is small and the efficiency is low; in addition, when the filter material is used for filtration, the particle size of the filter material is large, so fine and micro filtration cannot be performed, and only coarse and fine filtration can be performed, which has limitations. Contents of the invention [0003] The technical problem to be solved by the ...

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Problems solved by technology

[0002] At present, most of the filters on the market are filtered through the filter material. During its use, the filter needs to be washed frequently, and even the filter material needs to be replaced frequently. Moreover, it is time-consuming and labor-intensive to use the filter material to filter, and the filter tank occupies a large area. The flow space is small and the efficiency is low; in addition, when the filter material is used for filtration, the particle size of the filter material is large, so fine and micro filtration cannot be performed, and only coarse and fine filtration can be performed, which has limitations

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