GROUND WATER LEVEL CONTROLLER Russian patent published in 2013 - IPC E02B11/00 G05D9/02 

FIELD: construction.

SUBSTANCE: controller comprises a well 7, a stop element in the form of a valve 4 installed in it on the head of the drain, and the valve is connected with levers of a hinged mechanism, and a float 8. The lever mechanism is made as capable of free contact with the floating float 8. The float is installed in an additional chamber 6. The lever mechanism is installed on the horizontal axis 12. Besides, the axis of the lever mechanism divides it into two unequal parts 14 and 15, the top one of which is more than the bottom one. On the top part of the arm 14 there is a counterbalance reservoir 17 hingedly fixed, the centre of gravity of which is placed above the horizontal axis of rotation. On the bottom part of the arm 15 there is a mechanism hingedly fixed to change position accordingly above the float at elevations of maximum and minimum water level in the float chamber.

EFFECT: increased reliability of a device, higher accuracy of control and possibility to adjust system operation into a drying mode.

5 cl, 3 dwg