Multi-graded filtering device

Abstract

The invention relates to the technical field of filtering devices and particularly relates to a multi-graded filtering device. Aiming at solving the technical problems, the invention provides the multi-graded filtering device capable of effectively filtering sewage. The multi-graded filtering device comprises a first-grade filter cartridge, a second-grade filter cartridge and a water filtering groove, wherein a water inlet is formed in the upper end of the first-grade filter cartridge and a water outlet is formed in the bottom end of the first-grade filter cartridge; one end of the water filtering groove is connected with the water outlet and the other end of the water filtering groove is connected with the second-grade filter cartridge and extends into the second-grade filter cartridge; the multi-graded filtering device further comprises a baffle arranged in the first-grade filter cartridge; a water filtering plate is arranged on the baffle; thin and small through holes, which are densely arrayed, are formed in the water filtering plate; a filter screen is arranged at the upper end position of the water outlet; a slaked lime layer, a wood charcoal layer and a filtering cotton layer are laid in the second-grade filter cartridge from top to bottom in sequence; and a water permeable layer with holes is arranged below the filtering cotton layer. According to the multi-graded filtering device provided by the invention, sewage is subjected to rough filtering of the first-grade filter cartridge and fine filtering of the second-grade filter cartridge, so that pollutants in the sewage are effectively removed, and the sewage filtering effect is improved.

Description

technical field [0001] The invention relates to the technical field of filtering devices, in particular to a multi-stage filtering device. Background technique [0002] In the production process of titanium dioxide, a certain amount of acidic sewage will be produced, which will dress the surrounding soil. If the sewage seeps into the ground through some channels, it will cause serious pollution to groundwater. The existing chemical, pharmaceutical Sewage filtration devices used in industries such as food, papermaking, etc. can only simply filter sewage. Due to the simple structure, the filtration performance is not ideal, and the sewage filtration effect is poor. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a multistage filter device which can effectively filter sewage. [0004] The technical solution adopted by the present invention to solve the technical problem is: a multi-stage filter device, including a ...

AI Technical Summary

Problems solved by technology

[0002] In the production process of titanium dioxide, a certain amount of acidic sewage will be produced, which will dress the surrounding soil. If the sewage seeps into the ground through some channels, it will cause serious pollution to groundwater. The existing chemical, pharmaceutical The sewage filtration devices used in industries such as food, paper, etc. can only filter sewage simply. Due to the simple structure, the filtration performance is not ideal, and the sewage filtration effect is poor.

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