In the process of selecting the fabric sample dyeing machine, the diameter of the nozzle should be slightly wider than the diameter of the rope (wet state) of the fabric. The thicker the fabric, the more attention should be paid to this to prevent smashing and smashing during the dyeing process. The nozzle is caught between the seams or the knots. Secondly, the nozzle must be carefully fixed, fixed in all directions on the three screws, and checked without shaking. Finally, the application of double-tube and multi-tube overflow jet dyeing is best to match the weight and length of the fabric in each tube when it is equipped with a cylinder. It has been proved that the weight and length between the tube and the tube differ by 10~15. % is still not a problem, otherwise there will be a tube difference.
Elimination of blockage of fabric sample dyeing machine
The jamming of the fabric sample dyeing machine seems to be inevitable. After long-term observation, no matter whether it is imported or domestically produced, if it is used improperly, there will be different degrees of blocking, and there are four reasons:
1 After the fabric enters the machine, it must go slowly and smoothly for 3~5min, then close the door and feed again. Sometimes due to the change of the processing variety, some devices on the machine have not been adjusted, such as liquid return valve, nozzle, etc., eager to cast Dyeing to produce a mechanical blockage.
2 Sometimes for some light-weight high-density fabrics, such as Chun Yafang, Poly Thafu, etc., they are not going down after entering the machine, but floating in the liquid surface, such as neither full full overflow mode, plus liquid return valve heat The effects of exchangers and strainers, etc., do not take measures such as adding degassing agent to the dye bath to let the air out of the fiber, etc., the fabric is easy to tie the cloth, so it depends on the fabric, the process, the selection of additives To prevent problems from occurring.
3 The operator enters the fabric into the dyeing machine, and can't do everything! However, it is still necessary to pay attention to observing whether the fabric inside the machine has a blockage. Once it is found that the recoil blocking device is activated immediately, it is easy to eliminate. If the time is long, the set will be deeper and deeper. Even if it is found, it will not be arranged. Labor and life.
4When the fabric is fed into the machine, does the foam in the dye bath increase? Because sometimes no defoaming agent is added or the amount is not added, or the antifoaming effect is poor, even if the water hardness is high, foam will occur at normal temperature, resulting in "pneumatic" and forming a blockage. It must be pointed out that, for example, when dyeing Add defoamer, it should be added before the foam appears, such a foam suppression effect is better.
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