Quick wall surface slurry throwing device

The invention relates to a quick wall surface slurry throwing device. The problems that slurry throwing by a racket is uneven, slurry needs to be dipped repeatedly, and the labor intensity is large are effectively solved. According to the technical scheme, the device comprises a semicircular outer shell, an upper supporting leg and a lower supporting leg are installed on the right side face of theouter shell, rolling wheels are arranged on the supporting legs, a barrel is arranged in the outer shell, an opening is formed in the upper part of the barrel, two partition plates are arranged at the opening of the barrel, two discs are arranged outside the barrel, a plurality of sliding grooves are circumferentially formed in each disc, sliding blocks are arranged in the sliding grooves, and first permanent magnets are arranged on the outer sides of the sliding blocks; a second permanent magnet is arranged on the inner wall of the outer shell; the second permanent magnet can push the sliding blocks to move towards