SWIRL TYPE SILTING UP PREVENTING DEVICE FOR CONDUIT

The utility model relates to a swirl type conduit silt-proof device used in low-pressure conduit water-delivery irrigation engineering. The utility model is composed of a silt-proof pool 1, a water inlet swirl pipe 2, a water outlet pipe 5, a silt discharging pipe 3, etc. The silt-proof pool is in cone column shape. The water inlet swirl pipe is positioned in the middle part of one side of the silt-proof pool, and the water inlet swirl pipe has tangent water-inlet with the pool wall. The water outlet pipe is positioned at the upper end of one side of the silt-proof pool. The silt discharging pipe is fixed at the axis center position of the water body in the silt-proof pool, and the lower end of the silt discharging pipe is straightly inserted to the silt-proof pool bottom at a distance of 10-30 cm away from the pool bottom. The device has simple structure, cheap manufacturing cost, convenient operation, easy silt discharging. The utility model can be made into prefabricated parts in advance and be assembled in field according to engineering needs at any time.