Single film hole aeration filter head

Abstract

The invention discloses a monofilm hole aeration filter, which comprises a hollow monofilm hole filter handle (1), an embedded part (2) and a filter cap (3), wherein the monofilm hole filter handle (1) is in threaded connection with the embedded part (2), and the filter cap (3) is in threaded connection with the embedded part (2); the monofilm hole filter handle (1) on a distributing hole (1-5) is also provided with an aeration film hole device (1-3) which comprises an aeration hole (1-3-1), a monofilm rubber diaphragm (1-3-2) and an opening cover plate (1-3-3); and the opening cover plate fixes the monofilm rubber diaphragm (1-3-2) on the outside of the aeration hole (1-3-1). The monofilm hole aeration filter not only has the characteristics of gas distribution and water distribution of a gas-water back washing long-handle filter but also has the advantages of a diaphragm type perforation aeration pipe, and does not require a gas distribution pipe; aeration, back washing gas distribution and back washing water distribution are uniform; and the aeration film hole is positioned on the lower part of a filter plate, so that the monofilm hole aeration filter is convenient to maintain and overhaul and obviously reduces the investment cost and the maintenance cost compared with the fact that the aeration film hole is arranged inside a filter material bearing layer.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a single-membrane hole aeration filter head, which is used for uniform aeration, water distribution, and backwash distribution of water and air in a biological aerated filter tank. Background technique [0002] In the biological aerated filter for biological treatment of water supply and drainage, the most common method to distribute water to the filter material layer and perform air-water backwashing is to use a long-handled filter head to distribute water and air. The filter head is fixed in the filter plate, and the filter head The water and gas distribution area of ​​the pool is connected with the filter material layer through the filter head. Due to the influence of construction factors, the levelness between the air distribution holes of the fixed filter head often fails to meet the process requirements, resulting in uneven backwashing of air and water. The aeration to the f...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings that the levelness between the air distribution holes of the existing fixed filter head often cannot meet the process requirements and the aeration system in the filter tank is complicated and difficult to repair after damage, the invention provides a simple structure, easy to install and repair Simple, aeration and backwashing air distribution and water distribution uniformity can meet the technical requirements of the biological aerated filter single-membrane aeration filter head, directly under the filter plate through the air cushion layer aeration

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