Elimination of Cloth Clogged in Overflow Jet Dyeing Machine

When using overflow jet dyeing, the phenomenon of cloth blocking seems to be inevitable. After a long period of observation, it is believed that whether it is an imported machine or a domestic machine, if it is used improperly, there will be different degrees of blockage. There are four reasons for this:

①After the fabric enters the machine, it must run smoothly for 3~5 minutes, and then close the door and feed the material. Sometimes due to the change of processing varieties, and some devices on the machine have not been adjusted, such as liquid return valve, nozzle, etc., they are eager to cast Dyeing resulting in mechanical blockage;

②Sometimes, for some light-duty and high-density fabrics, such as Chun Yafang, Ditafu, etc., they do not go down after entering the machine, but float on the liquid surface. If the full overflow method is not adopted, and the return valve is hot The influence of exchangers and filters, etc., and measures such as adding degassing agents in the dye bath to let the air out of the fibers are not taken, the fabric is easily knotted and blocked, so it depends on the fabric, the ordering process, and the selection of auxiliaries. , to prevent problems from occurring;

③ When the operator inputs the fabric into the dyeing machine, everything will be fine! However, it is still necessary to observe whether the fabric in the machine is blocked from time to time. Once found, the recoil blockage removal device will be activated immediately, and it will be easy to eliminate. injuring one's life and wealth;

④Does the foam in the dye bath increase after the fabric is fed into the machine? Because sometimes the defoamer is not added or the dosage is not properly added, or the foam suppression effect is poor, or even high water hardness will cause foam at room temperature, resulting in "air stroke" and the formation of blockage. It must be pointed out that when dyeing, it must be When adding a defoamer, it should be added before the foam appears, so that the anti-foaming effect is better. In addition, I think that the utilization rate of computers equipped on domestic batch dyeing machines is generally only about 70%, and about 30% of the problems still need to be solved by the proficiency of the operators, that is, the expensive imported overflow jet The computer on the dyeing machine is also unlikely to be 100% effective, because the factors that affect the success of dyeing are difficult to measure, which is completely understandable. I have told my colleagues many times that batch dyeing production technology is a workshop-style production technology, unlike continuous pad dyeing, which is an industrialized production technology.