Developer supply device

A developer supply device, comprising a cylinder body and a left side cover and a right side cover respectively connected to two ends of the cylinder body, wherein the left side cover is provided with a gear shaft system, the gear shaft system being provided at an outside thereof with a gear side cover connected to the left side cover, and the cylinder body is provided therein with a screw conveying rod and a stirring rod, an end of the screw conveying rod and an end of the stirring rod being respectively connected to two outputs of the gear shaft system, characterized in that:

• the right side cover is provided with a powder outlet assembly which comprises a seal provided on the right side cover, wherein the seal is provided thereon with an inner powder outlet;
• another end of the screw conveying rod is arranged within the seal;
• and the seal is further provided at two ends thereof with radially protruding limit rings respectively, wherein a sealing barrier is coaxially provided outside the seal between the two limit rings, the sealing barrier being provided thereon with an outer powder outlet and a shift block;
• and
• the limit ring closest to the cylinder body is provided thereon with an arc-shaped rotating slide groove, an end of the rotating slide groove being in communication with a limit slot, and the sealing barrier is provided at an end thereof with a radially protruding elastic protrusion, the elastic protrusion being provided at a bottom thereof with a slide block.