Lime slurry preparation tank capable of preventing filter screen pipeline from being blocked

The utility model relates to the technical field of lime processing, in particular to a lime slurry preparation tank capable of preventing a filter screen pipeline from being blocked, which comprises a tank body. Impurities in lime can be firstly screened through the screening bin, and the lime doped with the impurities is prevented from entering the tank body during feeding, so that the lime doped with the impurities is mixed with lime slurry through stirring; according to the device, the screening bin and the tank body can be fixed through the fixing bolts and the fixing pieces, so that impurity particles which are not melted can be adsorbed on a filter screen of the filter screen pipeline in the discharging process, the filter screen of the filter screen pipeline is prone to being blocked after a long time, and the discharging function of a follow-up device is affected; and a filter screen arranged in the screening bin can be detached and replaced according to the size of impurity particles in the lime, so