Municipal building drainage energy-saving device

The utility model relates to a municipal building drainage energy-saving device which comprises a vertical water channel and a mounting box, the mounting box is fixed to the outer side wall of the vertical water channel, hydraulic parts are arranged in the vertical water channel, generators are arranged in the mounting box, the number of the generators is equal to that of the hydraulic parts, and the positions of the generators and the hydraulic parts are arranged in a one-to-one correspondence mode. The hydraulic parts are fixed to rotating shafts of the corresponding generators, and the hydraulic parts are driven by water flow to rotate so as to drive the corresponding generators to generate electricity. The device has the effect of improving the utilization rate of water flow potential energy in municipal drainage. 本申请涉及一种市政建筑排水节能装置，其包括竖直水道及安装箱，所述安装箱固定于所述竖直水道的外侧壁，所述竖直水道中设置有水力件，所述安装箱中设置有发电机，所述发电机与所述水力件数量相等且位置一一对应设置，所述水力件固定于对应的发电机的转轴，所述水力件受水流驱使而转动，进而带动对应的所述发电机发电。本申请具有提高市政排水中对水流势能的利用率的作用。