A spiral flow self-draining sand filter tank

Abstract

The invention discloses a spiral flow self-discharging sand filter tank, which relates to the technical field of agricultural irrigation. It includes a grit chamber, a clear water tank is provided at the end of the grit chamber, a water inlet gate is provided at the front end of the grit chamber, and an outlet gate is provided at the rear end of the clean water pond. A first notch is provided on the wall body between, and a plurality of overflow grooves are provided on the bottom surface of the first notch. The flow regulating plate in the grit chamber divides the inner space of the grit chamber into a steady flow section and a sand settling section. The bottom of the desilting section is provided with at least two desilting vortex tubes, one end of the desilting volute extends through the side wall of the desilting tank to the outside of the desilting tank, and is located at the A second notch is arranged on the sand discharge vortex tube inside the pool. The sand settling filter pool can achieve the double effect of sand settling and filtering within the shortest effective length, greatly improves the sand settling efficiency, and meets the requirement that surface water enter ditches and ditches for irrigation.

Description

technical field [0001] The invention relates to the technical field of agricultural irrigation, in particular to a spiral flow self-discharging sand filter pond. Background technique [0002] At present, the problems of water shortage and water pollution in our country are becoming more and more serious, and it is an inevitable trend to carry out extensive research on water-saving irrigation agriculture. Most of the water sources used in water-saving irrigation technology are surface water, but most of the surface water has a high sediment content. If the surface water is directly used in the irrigation system, it will inevitably cause blockage of pipelines and other facilities, which is not conducive to Agricultural irrigation. Therefore, water-saving irrigation technology requires water sources with very little sand content, so it is necessary to purify the sand in the surface water before irrigation. [0003] In order to achieve this purpose, grit chambers are commonly ...

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Problems solved by technology

[0003] In order to achieve this purpose, grit chambers are commonly used at present, but the effect of traditional grit chambers is not good, and the grit chambers are not thorough enough to meet the requirements of irrigation.

In addition, because the traditional desilting tank only depends on the natural desilting of sand in the process of water flow, the journey of desilting is long

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