Bottom countercurrent aeration mixing device for automotive urea solution

The utility model discloses a vehicle urea solution bottom countercurrent aeration mixing device which comprises an aeration tank, a feed pipe is fixedly inserted into the top of the aeration tank, a fan is fixedly connected to the outer side wall of the aeration tank, the output end of the fan is connected with an aeration pipe, and the output end of the aeration pipe is connected with a water pump. One end of the aeration pipe extends into the aeration tank and is connected with an aeration head, a supporting plate is arranged in the aeration tank, the bottoms of the two ends of the supporting plate are fixedly connected with the aeration tank through positioning plates, the aeration head is arranged on the supporting plate, a mounting plate is fixedly connected between the two positioning plates, a cavity is formed in the mounting plate, and the aeration head is arranged in the cavity. Two moving plates are slidably inserted in the cavity, one side of each moving plate is fixedly connected with a traction