The invention relates to agricultural production equipment in the technical field of production of water-soluble fertilizers, in particular to a deslagging device. The deslagging device comprises an outer shell, a sealing groove is formed in the outer wall on the front side of the outer shell, an upper opening and a lower opening are formed in the sealing groove, a plurality of aluminum support rods are fixedly connected between the upper opening and the lower opening in the inner wall of the outer shell, the support rod is provided with an assembly hole, both openings are formed in both the upper end and the lower end of the assembly hole, and a strip-shaped protection plate is arranged on the support rod. The deslagging device uses an original internal observation window to assemble and disassemble the internal adsorption protection plate, and uses a rotating shaft to movably connect a glass window in the sealing groove, the upper opening and the lower opening with different widths are formed in the sealing groove, the glass window is turned over through the lower opening with the larger width and is fixed and sealed through an external side sealing frame, the purpose of facilitating assembling and disassembling is fulfilled through the split support rods and the protection plate, the equipment does not occupy extra external space, the assembling and the disassembling are convenient, and the operation is very simple.