Automatic hydraulic control leaping weir initial rainwater catch basin and flow closure method

Abstract

The invention discloses an automatic hydraulic control leaping weir initial rainwater catch basin and a flow closure method. The automatic hydraulic control leaping weir initial rainwater catch basin and the flow closure method are suitable for the improvement of a bypass flow rainwater pipeline. The catch basin comprises a catch basin body, a flow inlet pipe, a water closure pipe, an automatic hydraulic control weir body, four limiting blocks, a floating cylinder, sector flow side baffles, flow discharging small holes, a separation wall, an overflowing pipe, a manhole, steps, a weir plate shaft and the like. The flow closure method is conducted by the catch basin and when it rains, flow of the water inlet pipe is enlarged along with the enlargement of rainfall. When the flow of the water inlet pipe is enlarged to a certain degree, a flow-jetting outer curve crosses the automatic control weir. According to the automatic control weir, a weir plate is opened under the buoyancy of the floating cylinder and the water flow in the flow inlet pipe is completely abandoned until the amount of the water flow of the flow inlet pipe is nearly zero. Due to the flow discharging action of the flow discharging small holes, the floating cylinder descends, the weir plate is reset, and clean rainwater can enter a water receiving body at the later period. The catch basin is completely controlled through hydraulic power, other control devices are not needed, operation is stable, maintenance is simple, and management is convenient.

Description

technical field [0001] The invention relates to rainwater drainage treatment technology, in particular to an interception technology capable of intercepting initial rainwater and completely abandoning later stage rainwater. Background technique [0002] Due to the development of human civilization, people's attention to the environment has gradually increased, and the urban drainage system has also undergone profound changes. The combined pipeline system is developing towards the intercepting combined system and the diversion system. The rainwater of the diversion system is completely discharged to the nearest water body. However, due to the production and life of human beings, a large amount of pollutants are discharged into the environment and washed into the receiving water body by rainwater, causing serious environmental pollution. If all the rainwater is collected and sent to the sewage plant for treatment, it will affect the stable operation of the sewage plant. Cause ...

AI Technical Summary

Problems solved by technology

Although this device can realize initial rainwater abandonment, the structure of the device is complicated and the cost is high. At the same time, due to the existence of the delay control room, some early rainwater will remain in it and then be mixed with the later clean rainwater to be discharged. As a result, part of the clean rainwater will always enter the initial rainwater discharge pipe along the drain pipe, so there is a defect that the separation effect is poor and the separation is not complete

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