Air inlet type self-circulation filter

Abstract

The invention discloses an air inlet type self-circulation filter, which comprises a filter body, a water inlet, a water outlet and an air inlet pipe, wherein a filtering material cabin is arranged atthe bottom of the filter body; the water outlet communicates with the upper side of the filtering material cabin; a water inlet pipe is arranged in the filter body and communicates with a vertical pipe; the vertical pipe is arranged at the middle part of the filter body; a water distributor is arranged at the bottom of the vertical pipe; a filtering material sucking pipeline is arranged in the vertical pipe in a sleeving way; a pulse type lifting pump is arranged at the bottom of the filtering material sucking pipeline; the top of the filtering material sucking pipeline is provided with a filtering material sucking device and a filtering material outlet; a filtering material cleaner is arranged at the filtering material outlet. The pulse type lifting pump and the filtering material cleaner are arranged in the filter; sewage and filtering materials at the inner bottom of the filter are lifted to the filtering material cleaner at the upper side for cleaning; after the cleaning is completed, filtering materials fall onto the upper part of the filter to continuously operate, so that the filtering materials in the filter are cyclically used and cleaned; the filtering material use efficiency and the filtering material cleaning degree are improved; the water outlet quantity is increased; the water outlet water quality is improved.

Description

technical field [0001] The invention belongs to the technical field of filters, and in particular relates to a high-efficiency air-intake self-circulation filter in sewage treatment. Background technique [0002] In the current filter, a high-pressure pump needs to be equipped in front of the filter to provide sufficient filtration pressure, and the filter tank must be a closed structure, and cannot withstand high pollutant concentrations during operation. , which increases the use limit of the equipment; when the filter is cleaning the filter material, it needs to be shut down for operation, which increases the difficulty of personnel's operation and the operating efficiency of the equipment; and in the cleaning process, when the filter material layer is thicker, When the filter material particles are large, the washing water cannot effectively roll and clean the filter material, resulting in incomplete cleaning of the filter material, which in turn causes the water product...

AI Technical Summary

Problems solved by technology

[0002] In the current filter, a high-pressure pump needs to be equipped in front of the filter to provide sufficient filtration pressure, and the filter tank must be a closed structure, and cannot withstand high pollutant concentrations during operation. , which increases the use limit of the equipment; when the filter is cleaning the filter material, it needs to be shut down for operation, which increases the difficulty of personnel's operation and the operating efficiency of the equipment; and in the cleaning process, when the filter material layer is thicker, When the filter material particles are large, the washing water cannot effectively roll and clean the filter material, resulting in incomplete cleaning of the filter material, which in turn causes the water production to fail to achieve the intended effect

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