DEVICE FOR ADJUSTMENT OF GROUNDWATER LEVEL Russian patent published in 2017 - IPC E02B11/00 G05D9/02 

FIELD: agriculture.

SUBSTANCE: adjuster comprises a drain well 1 connected to the inlet drain 2 with a pipe 3 in which an additional inlet pipe 4 is inserted. The shut-off valve comprises a housing 5, a working chamber 6 and a flexible membrane 7. The working chamber 6 in its side part has an L-shaped water-discharge tube 10 provided with a shut-off valve 11 with a float 12. The float 12 with a cone 11 is fixed to double-arm lever comprising the levers 13 and 14; the latter is connected by rod 15 to the lever 16. The lever 16 is connected to the guide pins 17 passed through the holes 18 of the locking washer 19 which has a channel 20 for the passage of water into the cylindrical pipe 21 which is connected to the outlet pipe 22. The float 23 is attached to the upper part of the valve 24, which has limiting pins 25 with guide pins 17 attached to it. The float 23 is located between limiting pins 25. The presence of the master mechanism made in the form of a screw pair of a screw 27 and a nut 28, provides the ability of kinematic connection of two float drives connected through the levers and the guide pins 17 of the valve 24.

EFFECT: improved reliability of the device operation, simplified design and reduced material consumption.

2 cl, 1 dwg