Coffee trickling filter

The coffee trickling filter comprises a base frame and a shell, the shell is arranged on the base frame, the shell is provided with a water guide disc and a bottom plate, and a cavity is formed; the cavity is divided into an upper cavity and a lower cavity by using a bearing plate; the water guide disc is provided with a water inlet and connected with the water outlet of the bearing plate through a water pipe; one end of the sealing shaft is provided with a blocking piece for blocking the water inlet, and the other end of the sealing shaft extends to the position below the water outlet; a first elastic reset piece used for providing reset force for the sealing shaft is arranged in the water pipe. The lower cavity is provided with a jacking assembly acting on the sealing shaft. The base frame is provided with a filter cup assembly below the shell, and the filter cup assembly is provided with a water outlet and a filter piece. The sealing shaft is displaced through the jacking assembly, and a gap is formed betw