What is the working process of the high-temperature and high-pressure overflow dyeing machine?

1. Operation process

Connect the power supply of the high-temperature and high-pressure overflow dyeing machine;

Turn all the switches on the panel to the OFF position and close the pressure relief valve;

Open the water inlet valve and add water to the required water level according to the process sheet;

Start the circulation pump and the inner roller, feed the fabric to be processed, pass one end of the fabric through the inner roller and into the nozzle. When there is still 1.5 meters of the fabric left, turn off the circulation pump and the inner roller. Use a hook to pull the fabric out from the front end of the tank, find the fabric end, and sew the head and tail of the fabric together to form a continuous rope shape;

Put on the cover and tighten the bolts, and adjust the sizes of the manual valve of the conveying nozzle and the suction manual valve according to the requirements.

Select the program, turn all the switches to the automatic mode, start the circulation pump and the inner roller, and prepare the dyeing chemicals.

According to the process requirements, open the manual operation valve and feed the dyeing chemicals batch by batch through the chemical dissolving tank.

After adding all the dyeing chemicals, operate according to the process, and pay attention to observing the running condition of the fabric and the working condition of the equipment.

After the dyeing is completed, wait until the temperature drops to 80°C. Only after relieving the pressure and stopping the operation can the cover be opened for sampling and draining the liquid.

When discharging the fabric, separate the sewn head and tail, and put the fabric into the designated container through the fabric receiving roller.

2. Operation key points

(1) Key points of chemical dissolving operation

Check whether the prepared dyeing chemicals are accurate according to the recipe sheet.

(2) Key points of the operation during the dyeing process

When dyeing with a high-temperature and high-pressure overflow dyeing machine, close the machine cover before heating up, and observe the running situation of the grey fabric in the machine through the glass viewing hole at any time, and check whether there are any abnormal sounds and phenomena in all parts of the machine.

(3) Key points of the dyeing machine washing after dyeing

When washing the dyeing machine, open all the valves of each pipeline to make the washing liquid flow smoothly, and discharge the sewage at a high temperature after the heat preservation is completed.

3. Common problems and measures

(1) Uneven dyeing

When dyeing with a high-temperature and high-pressure overflow dyeing machine, problems such as too fast heating up, too short heat preservation time, too slow circulation speed of the fabric, and the fabric capacity being far beyond the standard capacity may occur. We should reasonably determine the heating-up time, readjust the nozzle pressure, and pay attention to the fabric capacity and not put too much.

(2) Tangling

After dyeing the fabric with a high-temperature and high-pressure overflow dyeing machine, the fabric bundles may knot and cause the machine to stop, especially when using fully filled equipment and dyeing light and thin fabrics, this trouble is the most serious. So we must be careful and meticulous when using the dyeing machine.