Automatic backwashing centrifugation-sandstone integrated filter

Abstract

The invention discloses an automatic backwashing centrifugation-gravel integrated filter. Wherein the gravel filter is arranged in the center, and the centrifugal filters located on the same horizontal plane are evenly arranged on the outer side of the gravel filter; an outlet in the top of the centrifugal filter is connected with the top of the sandstone filter tank body through a sand conveying pipe; an additional opening is formed in the side wall of the cylindrical part of the centrifugal filter, so that the centrifugal filter is connected with the lower part of the gravel filter tank body through a sand discharge pipe and a filter material outlet electromagnetic valve; the uppermost main water inlet pipe is connected with the sandstone filter through a water inlet three-way electromagnetic valve and a sandstone filter water inlet pipe, another outlet of the water inlet three-way electromagnetic valve is connected with a volute-shaped water conveying pipe which is horizontally arranged, and the inner side of the volute-shaped water conveying pipe is connected with a water inlet of the centrifugal filter through a centrifugal filter water inlet pipe. According to the invention, a centrifugal-sandstone backwashing operation mode of a heterogeneous filter layer is established, and a centrifugal filter is formed by cleaning filter layer particles of a sandstone filter and then re-arranging the filter layer according to the particle size.

Description

technical field [0001] The invention belongs to the technical field of combination of various filters, in particular to an automatic backwash centrifugal-sandstone integrated filter. Background technique [0002] The development of Yellow River water drip irrigation technology for agricultural irrigation has become one of the effective ways to alleviate the global water resource shortage. Due to the problems of high cement sand concentration, fine particle size and high microbial concentration in the Yellow River, sand and gravel filters are considered to be the most suitable for primary filtration. One of the best choices. At present, the internal filter layer of the sand filter is mostly homogeneous filter material, and the clogging substances are mainly accumulated on the upper layer of the filter medium, so that the filter medium cannot fully exert its filtering capacity of the filter layer, and its filter particle size range is large. However, the removal efficiency is ...

AI Technical Summary

Problems solved by technology

However, at present, sand and gravel filters are considered to use homogeneous media, and they have not been able to realize the backwashing of heterogeneous filter materials of sand and gravel filters, and have not considered the combination of centrifugal filters and sand and gravel filters, and have not achieved separation efficiency and effective Synergistic improvement of filtration particle size range

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