DRAIN WELL Russian patent published in 2017 - IPC E02B11/00 

FIELD: agriculture.

SUBSTANCE: invention relates to reclamation, in particular to drain wells. The drain well comprises a body, in the lower part of which along the inner generatrix an annular protrusion-ledge 2 is formed, and in the lower part there is a limit stop 3. The sump tank 10 is made of a two-layer closed chamber 11 of waterproof soft elastic material with sealed ends and is provided with a shell 13 of plastics material in the upper part. The shell 13 is made with the ability of a closed air-forcing ring which is connected to the annular jacket 12 and the latter is attached to the two-layer closed chamber 11. The outer layer of the surface of the two-layer closed chamber 11 is glued with a protective coating 18 in the form of cantilevered walls also made of plastic material of dome shape with a central opening 19 in its bottom. The cavities of the shell 13 and the chamber 11 by the tubes 14 and 17 through the three-way valve are communicated with the atmosphere and a compressed air source. The drain well in the side walls has recesses 4 and 5, the lower part of which is formed with a sloping bottom 6 and 7. In the recesses with the wellhead tubes 8 and 9 placed in them, the locking elements 20 and 21, made in the form of valves, are fitted end-to-end with the walls of the recesses 4 and 5 and have drive levers 22 and 23. One end of the drive levers 22 and 23 is pivotally connected to the walls of the recesses, and the other is bent and provided with loads 24 and 25. When cleaning the sump tank in the upper position when the shell 13 abuts the stop 3 by injection air by a compressor or a pump into the cavity of the two-layer closed chamber 11 its upper layer starts to bend upwards and the entire contents of the silt deposit is displaced on the land around the well.

EFFECT: invention provides increase in the efficiency of a drain well under conditions of the silt deposit deposition while protecting the two-layer closed chamber.

3 cl, 1 dwg