Backswing automatic washing and filtering device

Abstract

The invention discloses a backswing automatic washing and filtering device, belongs to the technical field of sewage treatment, and particularly relates to a backswing automatic washing and filtering device capable of removing the sludge remaining after filtration automatically. According to the technical scheme of the backswing automatic washing and filtering device, the backswing automatic washing and filtering device is composed of a water pipe, a filter screen tube, an impeller with a brush and a fixing frame. The impeller with the brush is rotatably arranged on the fixing frame in a sleeved mode, one end of the fixing frame is fixedly connected with the filter screen tube, and the other end of the fixing frame is fixed through a supporting frame on the fixing frame. According to the backswing automatic washing and filtering device, the filter screen tube is changed into a cone shape which is narrowed gradually, and the impeller with the brush and a washing brush are arranged in the filter screen tube, so that when the sewage flows forward, the impeller and the washing brush do not rotate, and residue and scraps in the sewage are intercepted by the filter screen tube with no limit; when the sewage is stopped from entering into the filter screen tube, the water discharging direction is changed, backswing water is injected from the close end of the filter screen tube, and the impeller is driven to rotate around the fixing frame under the function of the flow, so that the washing brush of which shape imitating the sinner wall of the filter screen tube is driven to rotate, the residue and scraps adhering on the inner wall of the filter screen tube are swept down by the washing brush, the residue and scraps are discharged from an opening of the filter screen tube along with washing water, and the purpose that the filter screen tube is washed automatically is achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a recoil automatic flushing filter device capable of self-clearing filtered sediment. Background technique [0002] In people's work and life, the most common method of physical treatment of sewage is filter filtration. One is that because of the simple filtering method, a filter screen full of meshes can be installed at the sewage inlet to intercept the slag and debris in the sewage; the other is that the treatment cost is low, and a single net can be repeated repeatedly use. However, there is a fundamental defect in it, that is, when the filter screen full of meshes is gradually filled with intercepted slag and debris, the filter screen is equivalent to a barrier at the entrance of the sewage, and the speed of sewage inflow will be greatly reduced. That is, the sewage treatment capacity is weakened. At this time, people can only close the valve of the sewage inflow...

AI Technical Summary

Problems solved by technology

However, there is a fundamental defect in it, that is, when the filter screen full of meshes is gradually filled with intercepted slag and debris, the filter screen is equivalent to a barrier at the entrance of the sewage, and the speed of sewage inflow will be greatly reduced. That is, the sewage treatment capacity is weakened

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