DEVICE FOR REGULATION OF WATER LEVEL IN CLOSED DRAINAGE NETWORK Russian patent published in 2015 - IPC E02B11/00 G05D9/02 

FIELD: agriculture.

SUBSTANCE: in the drain well 1 a chamber 11 is located, communicated with the outlet orifices 12 and 25, and a container 13. In the chamber 11 a float articulation linkage is placed, the rod 18 of which is passed through the orifice 12 into the container 13, in which the cone valve 14 with the load 15 is placed. The container 13 through the pipeline 16 is connected to the outlet drain 4. The bottom of the chamber 11 is communicated with the drain well 1 by the inlet opening 17 and is made in the form of a valve 23 and a float sensor 22 interconnected with the rod with the ability of axial displacement. The inlet opening 17 of the float sensor 22 is formed with projections-limiters 24 with windows. The housing 10 of the shut-off device has a recess in which a pipe 26 with a spring 27 with a screw 28 is placed. The spring 27 is placed in the cavity of the flexible sleeve 29, which serves as protection from clogging with debris and deposits. The sensing element in the form of a spring 27 supports the valve 3 in opening and closing the opening 9 in the seat of the housing 10, which eliminates the shock loading of the valve on the seat in the housing 10. Closing the opening of the shut-off device is carried out only after emptying of the float chamber. As a result of this the work of the float drive is balanced by moments of forces from the minimum to the maximum water level in the well 1.

EFFECT: improved reliability of the device, improved accuracy of regulation and enhanced range of technical means for regulation of the water level in the closed drainage systems.

3 cl, 1 dwg