Box culvert self-locking door

Abstract

The invention relates to a box culvert self-locking door. A door framework and a door leaf movably assembled on the door framework are included; the door leaf is arranged on the door framework, and isin a closed state under the self weight effect; the door framework comprises a floating ball and a rotating shaft; after the floating ball ascends when the water level ascends, the rotating shaft isdriven to rotate and the door leaf is released; and after the floating ball descends when the water level descends, the door leaf drives the rotating shaft to rotate under the self weight effect, andthe door leaf is closed. The technical scheme provided by the box culvert self-locking door is adopted, the box culvert self-locking door completely adopts a mechanical structure, and does not relateto any electric control element, cost is low, and maintaining is convenient; meanwhile, an electric control part is eliminated in a water domain area, the risk caused by device aging electric leakageis avoided, the maintaining cost is low, the box culvert self-locking door can be automatically opened and closed according to the height of the water level in a box culvert, and better economical benefits are achieved when the box culvert self-locking door is applied in a scene where the water draining amount is large and the water draining frequency is high.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a box culvert self-locking door. Background technique [0002] In urban drainage pipe network, when the sewage and rainwater separation system is implemented, the sewage is collected by the drainage pipe, sent to the sewage treatment, and then discharged into the water body or recycled; after the rainwater runoff is collected by the drainage pipe, it is discharged into the nearby water body. However, in practice, usually based on construction cost considerations, the rain and sewage diversion in urban drainage systems is not complete, and sewage and rainwater are often mixed together. In order to treat the sewage in the confluence, it is necessary to set up a sewage interception pipe. Normally, the sewage is sent to the sewage treatment plant through the interception pipe. On rainy days, the rainwater and sewage that exceed the conveying capacity of the interception pipe are ...

AI Technical Summary

Problems solved by technology

[0005] In view of the high cost and maintenance cost of the current box culvert door, and the opening and closing of the gate cannot be opened and closed in time with the water level, it is necessary to provide a box culvert self-locking door that can automatically open and close according to the change of the water level inside the box culvert gate

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