Guide vane type desilting funnel

Abstract

The invention relates to the technical field of water conservancy projects, in particular to a guide vane type desilting funnel. A stand column in the guide vane type desilting funnel supports the flow adjusting suspension plate, and a guide vane is installed on the stand column. The guide pieces change the flow direction of high-concentration sand-containing water flow at the bottom of the funnel chamber, due to the flow guide effect of the guide pieces, the movement path of the sand-containing water flow which does circular motion along the circumference where the inner side of the stand column is located and nearby the stand column is changed, and the sand-containing water flow can rapidly enter a spiral flow area in the center of the funnel to do spiral motion under the combined action of the guide pieces and inertia force. Under the action of air vortex rotation, silt in the spiral flow area is not prone to being deposited on the bottom plate or escaping along with overflow, and the silt can only be discharged from the silt discharging bottom hole. According to the guide vane type desilting funnel, the sediment deposition amount of the bottom plate of the funnel chamber on the inner side of the stand column is reduced, the desilting rate of the bottom hole is improved, and the problems that in the existing desilting funnel technology, due to the fact that the stand column is arranged, sediment of the bottom plate of the funnel chamber is serious, and the sediment interception rate and the desilting rate of desilting funnel engineering are reduced along with running time are effectively solved.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a vane-guiding sand discharge funnel. Background technique [0002] In the Dusha River Basin in the inland area of ​​Northwest China, it is often necessary to build secondary sediment discharge facilities in the upper reaches of irrigation canals, reservoirs, and hydropower stations to pre-treat sediment in order to reduce the damage caused by sediment to agricultural production and water conservancy projects. The sand discharge funnel (that is, the funnel type full sand discharge technology) effectively alleviates the problem of sediment deposition in river channels. Due to its good sand interception rate and low sand discharge water consumption rate, the sand discharge funnel is widely used in fields such as hydropower generation, snail discharge for lake control, river dredging and other fields. [0003] The sand discharge funnel is a secondary sand disc...

AI Technical Summary

Problems solved by technology

[0006] Therefore, optimizing the structural form of the sand discharge funnel, effectively solving the problems of the existing sand discharge funnel technology due to the addition of pillars to the serious sediment accumulation in the funnel chamber and the low sediment discharge rate of the bottom hole of the sand discharge, and improving the sand discharge efficiency have become a further step. Problems to be Solved Urgently in Popularizing the Application of Sand Discharging Funnel Technology

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