ADJUSTER OF GROUNDWATER LEVEL Russian patent published in 2017 - IPC E02B11/00 G05D9/02 

FIELD: agriculture.

SUBSTANCE: adjuster comprises a drainage pit 1, a shut-off valve 3 mounted at the inlet portal of the drain pipe. The locking unit 3 is provided with an L-shaped lever 4 attached pivotally to the rod 5, which is connected to the float actuator lever 10 connected pivotally at one end to the pit side. The float 15 is freely disposed in the chamber 11 and is provided at its lower part with a conical valve 16 fixed coaxially above the outlet 17 in the bottom of the chamber 11. The outlet 17 is made in the form of a truncated cone. The chamber 11 has a lid 18 with an opening 19 and guides 20, through which the rod 21 is passed, which is connected in its upper part through the hinge 8 to the middle portion of the lever 10. The valve 22 is also pivotally connected to the middle portion of the lever 10, respectively, with the rod 23. The rod 23 of the valve 22 is located in a cylinder 30 with a return spring 31, one end of which is attached to the lid 32 of the cylinder 30, and the second - to the valve 22. In the upper part of the chamber 11 above the float 15 the self-regulating levers 25 and 26 are mounted in such a manner that one their end is fixed in the wall of the chamber 11 with the swinging freedom on the axes 27 and 28, the other end is freely placed on the float 15 plane. The strap 29 is in contact with the levers 25 and 26 and is rigidly connected to the lower end of the rod 21 which, in turn, is connected through the hinge 8 with the middle portion of the lever 10.

EFFECT: increased efficiency of the adjuster and operational reliability by reducing the effort on the rod, and reduced material consumption.

2 cl, 1 dwg