Fire elevator shaft foundation pit drainage device

The utility model relates to a fire elevator shaft foundation pit drainage device which is suitable for basement elevator foundation pit drainage treatment. A fire elevator shaft foundation pit drainage device comprises a drainage pipe installed between a foundation pit and a water collecting well, and the drainage pipe is of a multi-step structure. The utility model has the advantages that: 1, the device is simple in structure and easy to clean; 2, the device is additionally provided with a one-way flow valve, so that water flow is prevented from flowing backwards, odor is prevented from flowing backwards, and insects and rats are prevented; 3, the device is convenient to manufacture and machine and low in manufacturing cost; 4, the device is convenient to construct, and the elevator shaft and the water collecting well can be directly pre-buried and communicated in the construction process; 5, the device is prevented from being blocked by construction waste through a filter screen cover; the water flow of th