Device for automatically maintaining concentration of dye liquor

The invention discloses a device for automatically maintaining concentration of dye liquor. The device comprises a box body, a left-right through cloth feeding cavity is formed in the box body, a dyeing cavity is formed in the lower side of the cloth feeding cavity in a communicating mode, a water pump box is arranged in the dyeing cavity, a water pump cavity is formed in the water pump box, and arotating cavity is formed in the lower side of the dyeing cavity; a partition plate is fixedly arranged between the dyeing cavity and the rotating cavity, a synchronous cavity is formed in the lowerside of the rotating cavity, and a bevel gear cavity is formed in the upper side of the synchronous cavity and the left side of the water pump cavity. According to the device disclosed by the invention, a dyeing agent is automatically added by observing the color of the dye liquor, the volume of the dye liquor is controlled to a single volume, whether the dip-dyed cloth needs to be subjected to dip-dyeing again or not is o