DRAINAGE SYSTEM Russian patent published in 2020 - IPC E02B11/00 

FIELD: land reclamation.

SUBSTANCE: invention relates to reclamation and may be used both in sprinkling and drying of agricultural lands. Drainage system comprises drain 1, collector 2, in wellhead of which there is reservoir 3 of well 4. Well 4 is equipped with outlet branch pipe 5 with flange 7. Float gate 8 with rod 22 and guide posts 10 is located in tank 3 of well 4. Float gate 8 has the shape of dome 17 with conical side walls 18, which along the perimeter have rubber seal 19. Float gate 8 of automatic action has an air outlet-inlet branch pipe 24, on which polyethylene hose 25 is put with positive buoyancy and tension, the latter with its upper part is connected with nozzle of small impeller 26 for supplying air under pressure to valve body 8. In the body of shutter 8 there are symmetrically arranged in its cavity water-outlet branch pipes 27, the output of which in height is located above canopy 17 of the gate, and ends of branch pipes 27 are bent. Float gate 8 is installed with possibility of movement along height on hollow guide posts 10, connected by one end to bottom of well 4, and by another – freely located below hinge 11 on post 12 of articulation linkage 13, connected with tilting shutter 16. Gate 8 slides along guide posts 10 and is retained in the planned position by rings 20 welded to flange 9 of gate 8 and put on guide posts 10 for movement along gate 8 height.

EFFECT: use of invention improves operation reliability of melioration system, provides automation of operation and reduced number of hydromechanical devices, conditions are created to simplify its operation.

4 cl, 1 dwg