Circumferential pressure filter material-free filtering device

Abstract

The invention discloses a circumferential pressure filter material-free filtering device which is composed of a filter main body, an end cover, N filtering net pipes, a clear water relief valve, a backwash water inlet valve, a sewage inlet valve, a backwash sewage discharging valve and a seal ring. The peripheral area of the filter main body is a sewage bin, the central area of the filter main body is a filtering bin, and a clear water bin is defined by the filter main body and the end cover. A supporting pipe is arranged in the filter main body, and the filtering net pipes wrap the periphery of the supporting pipe. The clear water relief valve and the backwash water inlet valve are positioned on the end cover; and the sewage inlet valve and the backwash sewage discharging valve are arranged on the sewage bin. After the filtering device is adopted, due to the fact that a filter material does not need to be used, the size of the filtering device is not limited; the circumferential pressure filter material-free filtering device is small in size, simple and convenient to manufacture and good in filtering effect, can be of the same structural type when performing coarse filtration, fine filtration, refined filtration, microfiltration, ultrafiltration and sub-ultrafiltration, is high in universality, saves energy, is convenient to use, can finish a self-cleaning function through backwash under normal conditions, and can also be dismantled to be cleaned thoroughly or maintain and replace filter screens and have very suitable popularization.

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 ...

AI Technical Summary

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

Images