The invention relates to the technical field of
liquid crystal bonding, in particular to an
alcohol loop special for a cleaning
machine, and mainly solves the technical problems that an existing
alcohol loop of the cleaning
machine is poor in control precision, and whether
alcohol exists at a cleaning head or not cannot be achieved. The structure comprises a supply path, a first control path and a second control path, the supply path comprises an alcohol pot, a dispensing
machine, a needle tube, an on-off valve, a detection function block and a cleaning head which are communicated in sequence, the first control path comprises a first pressure regulating valve, and the second control path comprises a second pressure regulating valve and a third pressure regulating valve. According to the structure, the dispensing machine is adopted for supplying alcohol, a tedious alcohol tank
system is abandoned, the equipment is cleaner, and the cost is lower; the needle tube is matched with the first control path and the second control path to supply alcohol to the cleaning head, so that the control precision is higher; the detection function block is additionally arranged and is arranged on the adjacent upstream of the cleaning head, so that whether alcohol exists or not can be accurately detected, whether alcohol exists at the cleaning head or not is effectively reflected, and then the reliability of cleaning operation is guaranteed.