Color density measuring device for paper processing

The utility model discloses a color density measuring device for paper processing, which comprises a detection hole, a display screen, a control key, an equipment shell and an equipment bottom shell, a sealing mechanism is fixedly arranged on the equipment bottom shell at the detection hole, and the sealing mechanism comprises a sealing plate block, a sealing rubber pad, a positioning frame body, a limiting frame body and a limiting notch. The limiting frame bodies are fixedly installed on the two sides of the detection hole, sealing plate blocks are movably installed in the limiting frame bodies, sealing rubber pads are fixedly installed on the lower surfaces of the sealing plate blocks, a positioning frame body is fixedly installed at the position, located on one side of the limiting frame bodies, of the equipment bottom shell, and fixing mechanisms are fixedly installed at the edges of the two ends of the limiting frame bodies. The fixing mechanism comprises a mechanism shell, a pressing plate block, a lim