Lower flap gate provided with automatic sewage disposal device

Abstract

The invention discloses a lower flap gate provided with an automatic sewage disposal device, which comprises a gate plate, wherein the bottom of the gate plate is connected with a gate bottom sill arranged in a riverway through a supporting hinged shaft; a connection lifting lug arranged at the upper part of an upstream face of the gate plate is connected with an expansion rod of a hydraulic hoist placed at the top of a gate pier; the bottom of the upstream face of the gate plate is connected with a sewage disposal plate through a movable hinged shaft; the sewage disposal plate extends to the upper surface of the gate bottom sill; and the width of the sewage disposal plate is matched with the width of a gate hole of the riverway. The sewage disposal plate is formed by combining a plurality of parallel steel plates; and the front end parts of the steel plates are provided with oblique plane cutting edge structures. The lower flap gate has the advantages that the lower flap gate is simple in structure and ingenious in conception; a dead angle at an intersection (namely the gate bottom sill) between a downstream bottom face of the riverway and the gate plate is blocked off by utilizing the sewage disposal plate connected with the bottom of the upstream face of the gate plate in a hinged manner, so that the problem of silting of sediment at the bottom of the gate is solved thoroughly; complete gate closure and in-place water shutoff are ensured; and water leakage of the gate does not appear.

Description

technical field [0001] The invention relates to a lower flap gate, in particular to a lower flap gate with an automatic cleaning device. Background technique [0002] At present, there are more and more urban ecological water conservancy constructions, and the landscape requirements for the gates are also getting higher and higher. The lower flap gates are more and more used because they can better meet the landscape requirements. The bottom of the lower flap gate is provided with a rotatable supporting hinge shaft. When the gate is opened, the gate plate can rotate around the supporting hinge shaft and lie down to a flat position. The gate is opened and closed by a hydraulic hoist arranged on the top of the gate pier. operate. In order to reduce the obstruction of the ram to the river flow, a drop sill is arranged downstream of the sill. When the gate is opened, the ram is retracted horizontally in the drop sill. When the conventional lower flap gate is opened, because th...

AI Technical Summary

Problems solved by technology

When the conventional lower flap gate is opened, since the bottom sill of the gate is lower than the bottom surface of the river channel, sedimentation is easily formed at the junction of the bottom surface of the river channel and the sluice plate (such as As shown in Figure 3), the gate cannot be closed properly when the gate is closed (such as Figure 4), which seriously affects the performance of the lower flap gate application

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