Sheath flow impedance counting liquid path system

The utility model relates to the technical field of medical instruments, in particular to a sheath flow impedance counting liquid path system which comprises a sample processing unit, a sheath liquid unit and a counting component unit, and the sample processing unit comprises a sample cup, a first valve, a second valve, a first metering pump, a sixth valve, a ninth valve, a second metering pump and an eleventh valve. The sample cup is respectively connected with the sixth valve and the second valve, the first metering pump is respectively connected with the first valve and the second valve, the ninth valve and the sixth valve are respectively connected with the counting component unit, the second metering pump is respectively connected with the ninth valve and the eleventh valve, and the sheath fluid unit is connected with the second valve. The sheath liquid tank is a positive pressure liquid storage tank, all sheath liquid and cleaning liquid are provided for the system by accurately controlling pressure, th