Methanol feeding pump

The utility model discloses a methanol feeding pump which comprises a pump body, a driving device is arranged in the pump body, the driving device is connected with a main shaft, the end portion, away from the driving device, of the main shaft is fixedly connected with an impeller, the outer wall of the main shaft is connected with two cooling assemblies through a matching device, and the two cooling assemblies are both located on the pump body and oppositely arranged. Through the driving device, the main shaft is driven to rotate, the abutting block is driven to intermittently abut against the two moving blocks, when the abutting block abuts against the moving block located above the main shaft, cooling liquid enters the pump body, when the abutting block abuts against the moving block located below the main shaft, the cooling liquid flows out of the pump body, and meanwhile the main shaft rotates to drive the stirring blades to rotate. By means of the cooling device, the impeller can be fully and effectivel