Dust collection fan with cooling water circulation system

The utility model discloses a dust collection fan with a cooling water circulation system, and belongs to the technical field of dust collection fans. The device comprises a device base, the upper surface of the device base is fixedly connected with a fan body through a fan seat plate, the air inlet end of the front side of the fan body is fixedly connected with a dust collection funnel, the rear side face of the fan body is fixedly connected with a main shaft sleeve, and the rear end of the main shaft sleeve is provided with a temperature detection disc. The temperature detection disc is arranged at the position, generating friction heat, of the main shaft, the actual rotating temperature of the main shaft can be effectively obtained, the ineffective working time of a water circulation cooling system is shortened, energy is saved, the use cost of a fan is reduced, cooling liquid in the cooling water pipe can be pumped away in cold weather, and the service life of the fan is prolonged. The cooling water pipe