TWO-LEVEL DRAINAGE SYSTEM Russian patent published in 2016 - IPC E02B11/00 

FIELD: land reclamation.

SUBSTANCE: invention can be used for uniform ground water level control on lands requiring watering and drainage in area of irrigation. System consists of upper tier drains, lower tier drains, collectors 3, 4, which combine drains of upper and lower tiers respectively into groups. In channel part collectors 3, 4 are looped by means of drain wells 5. Each of drain wells 5 at inlet manifold tube mouth 4 is equipped with extra branch pipe 9 with groove in its upper part, made with seat 10, in middle part of which there is ball gate valve 11. Ball gate valve 11 is connected with stem 12 and via hinge-lever drive is connected with float 16. Ball gate valve 11 with elastic shell is installed in seat 10 of branch pipe 9. Under action of water in well large float 16 raises, respectively, by turn of drive hinged-lever ball gate valve 11 is installed in seat 10 and closes water outlet. Outlet pipe head 6 inside well includes attached from above reinforced elastic valve 19 with edges 20, in lower part of which small float 21 with additional opening lever 22 is mounted, to which in its turn flexible link 23 is secured to stem 15 of large float 16. Operation of two valves in phase opposition to each other, when one of valve is open, and other one is closed and vice versa.

EFFECT: higher quality of operation of wells - controller in automatic mode, higher reliability and stability in operation with melioration system.

4 cl, 2 dwg