Knife-type water filling valves for flat gates in rivers with heavy sediment

Abstract

The invention discloses a cutter-shaped filling valve for a much-sediment river plane gate. The cutter-shaped filling valve comprises a hoisting rod, a hole groove, a bearing shaft and a valve plate, wherein the top of the hoisting rod is hinged to a hoisting head of a hoist, the hole groove is formed in the middle of the hoisting rod in the longitudinal direction, the bearing shaft penetrates through the hole groove and is fixedly connected with the plane gate, the valve plate of a valve chamber is arranged between a plane gate water inlet and a sluice channel, and the upper end of the valve plate is connected with the lower end of the hoisting rod. The lower end face of the valve plate is of a cutting edge structure upwards inclining towards the downstream side, and the inclined angle alpha is larger than 30 degrees. The longitudinal section of the hoisting rod is of a U-shaped structure, and the position, located below the hole groove, in the hoisting rod of the U-shaped structure is provided with a guiding wheel matched with a gate groove in a rolling mode. The valve chamber is internally provided with a rubber hermetic seal which is sealed with the valve plate plane and surrounds the water inlet. The two side walls, located on the downstream, in the valve chamber are provided with a cantilever type supporting main rail and a lateral guide rail. The cutter-shaped filling valve has the advantages that the cutter-shaped filling valve is designed for much-sediment rivers, the door closing force of the plane gate is reduced, and the problem of the water-equalizing pressure of a water stopping plane gate on the upstream of the much-sediment rivers is solved.

Description

technical field [0001] The invention relates to a water filling valve for a high water head gate, in particular to a knife-type water filling valve for a plane gate of a river with many sediments. Background technique [0002] The water filling valve is a commonly used water filling device for gates, especially high head gates. The operation of the water filling valve is generally opened by pulling the boom with a guide groove, and closing by its own weight or external force. However, for the upstream water-stopping gates used in rivers with many sediments, if the ordinary water filling valve is used to fill and press the water behind the gate, a large closing force must be used, and a large number of counterweights or corresponding driving devices must be used to carry out the operation. At the same time, due to the existence of sediment, the reliability of valve opening and closing is difficult to guarantee. Contents of the invention [0003] The purpose of the present ...

AI Technical Summary

Problems solved by technology

However, for the upstream water-stopping gates used in rivers with many sediments, if the ordinary water filling valve is used to fill and press the water behind the gate, a large closing force must be used, and a large number of counterweights or corresponding driving devices must be used to carry out the operation. At the same time, due to the presence of sand, the reliability of valve opening and closing is difficult to guarantee

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