SAND AND GRAVEL TRAP Russian patent published in 2017 - IPC E02B8/02 E03F5/14 B01D21/00 C02F1/52 

FIELD: construction.

SUBSTANCE: sand and gravel trap includes a main receiving container 1 in which a hollow cylinder 2 mated with a supply water line 4 is arranged. Below the head of the cylinder 2 in the main container 1, a reflective screen 6 with radial branches with nozzles 8 is arranged. The nozzles 8 are oriented in such a way that each nozzle 8 of the screen 6 is directed inward the cavity of the container 1 with twisting the flow and creating a directed water flow along the circumferential plane of the cylindrical container 1. The container 1 is divided by a transverse partition 11 with bypass ports 12 into two cavities 13 and 14. In the lower part of the wall of the hollow cylinder 2, openings 5 are made at an acute angle towards the inner wall of the container 1. The upper part of the container 1 wall contains the outlet opening 15 which is offset relative to the bypass ports 12 in the transverse partition 11. The bottom of the container 1 is inclined to the horizontal axis of the device. In the center of the container 1, a flushing opening 18 with a flushing pipeline 19 is made. The container 1 in the upper part of its wall is connected with a outlet pipeline 16 of clean water by means of the outlet port 15. In this constructive solution and in the mode of hydrodynamic conditions of the sediment-saturated flow operation, the sediments will be delivered directly to the discharge manifold due to the rotating water and their washing off the inclined walls of the bottom, and clean water calmed above the partition will flow from the upper layers to the outlet pipeline 16 and onwards to the consumer.

EFFECT: improving the efficiency of continuous water cleaning from bottom and suspended sediments, ensuring the possibility to regulate the hydraulic flow structure in the water supply distributor made in the form of a reflective screen with radial branches and nozzles and the water separating device in general, simplifying the design.

3 cl, 2 dwg