Flue gas quenching device with fly ash collecting function for waste incineration

The waste incineration flue gas quenching device with the fly ash collecting function comprises a base, a flue gas pipeline and a quenching tower, the flue gas pipeline is arranged at the lower end of the quenching tower, the base is arranged below the quenching tower, and a waste water tank is formed in the base; compared with an existing flue gas quenching device, the flue gas quenching device is additionally provided with the variable-speed pipe, the flow speed of flue gas can be increased through the variable-speed pipe, so that the pressure in the drainage pipe can be reduced accordingly, water in the water tank can be conveyed into the separation tank and the sprayer through the drainage pipe and the water guide pipe, the water can be sprayed out through the sprayer, and the flue gas quenching effect is improved. In addition, an energy storage device is arranged, a solution of a fixed rod can flow up and down through a gas cylinder, a movable plate and a rack frame, then a first magnetic block and a thi