Stone alkali efflorescence pretreatment device and treatment method thereof

The invention discloses a stone alkali efflorescence pretreatment device. The device is an annular assembly line and comprises a plurality of placing tables, wherein the placing tables comprise tabletops and supporting columns under the table tops, clamping plates are arranged at the lower ends of the supporting columns, the clamping plates are arranged in an annular guide rail, the supporting columns are connected with a transmission chain, the transmission chain meshes with a motor output gear, so that the placing tables are driven to pass through a feeding area, a cleaning area, a dehumidification area, a spraying area, a drying area and a discharging area and then enter the feeding area for loops. According to the device, stone is cleaned, sprayed, dried and packaged through the assembly line, so that the efficiency is high, due to adoption of mechanical spraying, a surface coating is uniform, the quality is stable and reliable, the phenomena that manual spraying is not uniform and coating is omitted in t