Patent ID: 8323582

Claim:
A device for quantitatively supplying a liquid in a plasma sterilization system, comprising: a quantitative cylinder comprising a quantitative inlet pipe, which is configured such that an outlet of a liquid container is inserted theretinto, and a liquid in the liquid container is vertically supplied to the quantitative cylinder, and a quantitative outlet pipe, which is configured such that the liquid is vertically drained from the quantitative cylinder; a quantitative piston configured to rectilinearly reciprocate in the quantitative cylinder, and provided with a quantitative transfer depression, which is formed in a leading end thereof to a predetermined depth; a quantitative basket configured to quantitatively receive the liquid according to rectilinear reciprocation of the quantitative piston, wherein the quantitative transfer depression of the quantitative piston is located on a line identical to the quantitative outlet pipe of the quantitative cylinder when the quantitative piston is located at a bottom dead center, and is located on a line identical to the quantitative inlet pipe of the quantitative cylinder when the quantitative piston is located at a top dead center; and a drain cylinder for removing the liquid when a use period of the liquid in the quantitative cylinder has elapsed, and wherein the drain cylinder further comprises: a drain cylinder body comprising a drain inlet pipe, which is connected with a space inside the quantitative cylinder, and a drain outlet pipe, which is configured to vertically drain the liquid; a drain piston configured to rectilinearly reciprocate in the drain cylinder, and provided with a drain transfer depression, which is formed in a leading end thereof to a predetermined depth; and a drain basket configured to receive a liquid, which will be removed according to rectilinear reciprocation of the drain piston.