| 摘要 |
A sewage conveyance system in a public drainage pipe is provided to promote the drainage of a public drainage pipe in a road and to drain off a large quantity of rainwater smoothly by operating a drainage pump using compressive air generated by vehicle load and operating a drainage pump evenly using an air chamber. The sewage conveyance system in a public drainage pipe, which contains a collecting well(10) buried around a road(12) to collect rainwater and a rainwater discharge pipe(20) connected to the collecting well to discharge the collected rainwater, comprises an air pump(30) containing an elastic air bag(31) provided with an inlet(31a) and an outlet(31b) and installed on the road to make the top exposed upward and valves(32,33) fixed to the inlet and the outlet to exhaust or inhale air through the inlet and the outlet, an air chamber(40) connected to the outlet of the air pump and provided with an air vent(41), and a drainage pump(50) built in the collecting pump, composed of a housing(51) divided into a driving unit(53) and a draining unit(54) by a partition(52), an air turbine(55) fixed to the driving unit and an impeller(58) fixed to the draining unit and connected with the air turbine by a driving shaft(56) and operated by the pressure of air discharged to the air vent of the air chamber to discharge the rainwater collected in the collecting well to the rainwater discharge pipe compulsively. If vehicle tires moving on the road step on the air bag of the air pump, the compressed air generated by vehicle load is stored in the air chamber temporarily, supplied to the driving unit of the drainage pump via an air supply pipe(42) of the air chamber to rotate the air turbine, and then discharged to an exhaust pipe(53b), so that the impeller is rotated at high speed by the air turbine to discharge the rainwater storied in the collecting well to the rainwater discharge pipe compulsively. |
