Well flushing device

The utility model relates to a well flushing device, and relates to the technical field of well flushing equipment, the well flushing device comprises a drainage pipe and an air inlet pipe connected to a water pumping pipe, the drainage pipe comprises a water outlet pipe, a water pumping pipe and an expanding pipe connected between the water outlet pipe and the water pumping pipe, and the maximum inner diameter of the expanding pipe is larger than the maximum inner diameter of the water outlet pipe and the maximum inner diameter of the water pumping pipe; and the other end of the air inlet pipe is connected with an air source. The dewatering well cleaning device has the effects of conveniently cleaning the dewatering well and being convenient to use. 本申请涉及一种洗井器，涉及洗井设备的技术领域，其包括排水管和连接于抽水管上的进气管，排水管包括出水管和抽水管以及连接于出水管和抽水管之间的扩径管，扩径管的最大内径大于出水管和抽水管的最大内径，进气管一端与出水管连接，进气管另一端连接有气源。本申请具有便捷清洗降水井，使用方便的效果。