Liquid pipeline

The utility model discloses a liquid pipeline, including mixing pond feed liquor pipe (2), Y type tee bend (3), first drain pipe (42), first liquid check valve (44), second drain pipe (52), second play liquid check valve (54), at first, control second fluid passage second goes out liquid check valve (54) to Y type tee bend (3) diffluence. After second liquid flows into mixed pond feed liquor pipe(2), control first fluid passage first liquid check valve (44) to Y type tee bend (3) diffluence. When the injection of first liquid finished, continued control second liquid flowed into and mixes pond feed liquor pipe (2), the utility model discloses can effectively reduce the dead volume, prevent to remain the influence of liquid, it is high to prepare the solution precision. 本实用新型公开了种液体管路，包括混合池进液管(2)、Y型三通(3)、第出液管(42)、第出液单向阀(44)、第二出液管(52)、第二出液单向阀(54)，首先，控制第二液体通过第二出液单向阀(54)向Y型三通(3)流去。当第二液体流入混合池进液管(2)后，控制第液体通过第出液单向阀(44)向Y型三通(3)流去。当第液体注入完毕时，继续控制第二液体流入混合池进液管(2)，本实用新型能够有效减小死体积，防止残留液的影响，配制溶液精度高。