SLUICE GATE FOR OPEN TRAYS Russian patent published in 2015 - IPC E02B7/26 

FIELD: construction.

SUBSTANCE: sluice gate comprises a frame 1 vertically installed in a tray and a shield 2, capable of vertical displacement inside between side ribs of a frame bar. To the shield 2 a slider is fixed with thread, which may move along the thread during rotation of a worm screw 6 passing via the slider, connected with a drive 7 fixed in the upper part of the frame. The drive 7 provides for rotation of the worm screw 6 in one or opposite directions. The shield 2 has at the side of the upper reach a shell with stiffening ribs. The shell of the shield 2 is made in the form of a trapezoid with a small base, facing towards the bottom of the frame 1. End walls of the shield 2 shell and inner end walls of the bar in the lower part of the frame 1 have the same angle α of inclination from the vertical line towards the bottom of the shield 2. The shield 2 has seals, which may be pressed by their working surface to the sealed surface of the frame bar 1. Seals are arranged on opposite inclined ends of the shield 2 shell and the small base of the shield 2 shell, between the frame 1 and the above ends of the shield 2 shell. Each of frame 1 bars in its underwater part changes from its partially underwater inclined part into the vertical above-water part. The length of the inclined part of each frame 1 bars is more than the length of each of end walls of the shield 2 shell and is parallel to inclined end walls of the shield 2 shell.

EFFECT: invention makes it possible to eliminate friction of seals against a frame during opening and closing of a gate, which increases their service life.

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