Self-cleaning filtering apparatus

Abstract

A self-cleaning filtering apparatus comprises a filter tank with a water inlet, a water outlet and a sewage discharging port, and a filter screen and a self-cleaning device arranged in the filter tank; the middle-upper part of the filter tank also comprises a separation plate dividing the filter tank into an upper sewage collection chamber and a lower filtering chamber; the self-cleaning device comprises at least two groups of cleaning assemblies, a hollow connection shaft with two closed ends, and a driving shaft at the upper end of the connection shaft and a driving device; each cleaning assembly comprises a suck scanner, a brush body and a shaft sleeve, wherein the suck scanner and the brush body are fixedly connected with the connection shaft via the shaft sleeve, and the suck scanner and the brush body tightly attach to the inner wall of the filter screen; the suck scanner, the shaft sleeve and the wall of the connection shaft are provided with through holes for communicating with the cavity in the connection shaft, and the connection shaft is provided with a through hole at the shaft wall in the area of the sewage collection chamber; and the sewage discharging port is provided with a valve. The beneficial effects comprises that the self-cleaning filtering apparatus is high in automation degree, good in cleaning effect and simple in structure.

Description

technical field [0001] The invention relates to a special equipment belonging to an industrial circulating water treatment system, in particular to a self-cleaning filter equipment. Background technique [0002] At present, the industrial circulating water treatment system uses more screen filters. During the use of the filter screen filter, when the sewage passes through the filter screen, the impurities larger than the mesh diameter of the filter screen are intercepted and form a filter cake on the surface of the filter screen. The filter cake can filter out impurities with a smaller diameter during continuous use. , but the filtration efficiency of the filter will be reduced, and the pressure difference inside and outside the filter will continue to increase. Although the screen filter can effectively remove impurities in circulating water, the disadvantage of this type of filter is that it has a small amount of dirt, is easily blocked by dirt, and the cleaning work is c...

AI Technical Summary

Problems solved by technology

When the filter screen filter is in use, when the sewage passes through the filter screen, the impurities larger than the mesh diameter of the filter screen are intercepted, and a filter cake is formed on the surface of the filter screen. The filter cake can filter out impurities with a smaller diameter during continuous use. , but the filtration efficiency of the filter will be reduced, and the pressure difference between the inside and outside of the filter will continue to increase.

Although the screen filter can effectively remove impurities in circulating water, the disadvantage of this type of filter is that it has a small amount of dirt, is easily blocked by dirt, and the cleaning work is complicated. The equipment must be disassembled to achieve partial cleaning.

At present, there are also some self-cleaning filters, but due to the large pressure difference inside and outside the filter screen, the filter cake is pressed tightly on the filter screen, resulting in poor self-cleaning effect, and even the self-cleaning function cannot be realized.

Images