Printing ink filtering device

The printing ink filtering device comprises a printing ink groove which is horizontally arranged and a filtering assembly which is vertically arranged in the printing ink groove, an opening is formed in the top of the ink fountain, a feeding pipe is arranged at one end of the ink fountain, a discharging pipe is arranged at the other end of the ink fountain and communicated with the input end of the pump, and the output end of the pump is connected with the feeding pipe. The filter assembly divides the ink tank into a first chamber and a second chamber, the bottom of the first chamber is higher than the bottom of the second chamber, an arc-shaped surface is arranged at the joint of the bottom surfaces of the first chamber and the second chamber, clamping grooves are formed in the two sides of the arc-shaped surface, the filter assembly comprises a filter plate, the two ends of the filter plate are clamped in the clamping grooves, and an arc-shaped plate is arranged at the bottom of the filter plate; the arc-sh