Constant-temperature feeding device

The utility model provides a constant-temperature feeding device. The constant-temperature feeding device comprises a paint box, the paint adding mechanism comprises a containing barrel, a second pump body, a second suction pipe and a second output pipe, the input end and the output end of the second pump body are provided with the second suction pipe and the second output pipe respectively, the end of the second output pipe penetrates through the paint box and is arranged in the paint box, and the end of the second suction pipe is arranged in the containing barrel; and the paint discharging mechanism comprises a first pump body, a first suction pipe and a first output pipe, the input end and the output end of the first pump body are provided with the first suction pipe and the first output pipe correspondingly, and the end of the first suction pipe penetrates through the paint box and is arranged in the paint box. The arranged paint adding mechanism is matched with a travel switch, paint can be automatically