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Cleaning requirements and sampling problems of normal temperature and atmospheric pressure overflow dyeing machine Oct 09, 2018

The normal temperature and atmospheric pressure overflow dyeing machine needs special attention to its safe operation during the operation. For example, the tempered glass observation window is installed on the machine. When the temperature of the dyeing in the machine exceeds 100 °C, it must not be used. Wet cloth to scrub it, because the glass is subjected to high/low temperature difference, and the intense thermal expansion and contraction causes cracking, which is very dangerous! In addition, when the bath ratio is adjusted on the water level glass tube, the shut-off valves at the upper/lower ends should be closed.

 

Sampling problem of normal temperature and atmospheric pressure overflow dyeing machine, fabric dyed on double pipe or multi-tube overflow jet machine, it is best to take a dye sample and standard color on each pipe, in general, should be in each tube Consistent in coloring, but during operation, but because of the different cloth length in each tube, or the heat exchanger cycle is abnormal, or the filter is not cleaned for a long time, causing partial blockage, or the feed concentration is high and fast, etc. It will lead to the color difference between the tube and the tube. Since the color difference is caused by these main factors, it is necessary to pay attention to the normality of these components in daily production, and find problems in a timely manner. The maintenance and repair of the normal temperature and atmospheric pressure overflow dyeing machine, whether it is a small prototype or a large production machine, is the sealing ring to some extent.

 

Cleaning requirements for normal temperature and atmospheric pressure overflow dyeing machine

1. Removal of oligomers, the normal temperature and pressure overflow dyeing machine will often use its NaOH or acidic sulfite detergent to wash the cylinder to some extent, and to some extent it can be washed with its acidic sulfite detergent. Cylinder, can be added to the carrier during operation to help dissolve the oligomer, adding a high temperature resistant dispersant to a certain extent can inhibit the precipitation of the oligomer, rapid cooling and high temperature drainage can prevent oligomers Deposition and condensation.

 

2. Calcium salt, alkali scale and lint removal can be effectively cleaned with hydrochloric acid or sulfuric acid during operation. The effect is good when used, but stainless steel (corrosion-resistant stainless steel is commonly used on the inner wall of dyeing cylinder) The obvious effect is that the chrome layer gloss disappears completely and is highly corrosive. It is recommended to use the transferred TF-105F cleaning agent, which does not contain strong acid, is not corrosive to the cylinder, and has excellent cleaning effect.

 

3. Condensed dyes, tars, and greases can be removed and cleaned using traditional powder-preserving processes using insurance powders, liquid alkalis, and emulsifiers. In addition, when cleaning the dyeing tank, it is necessary to add an appropriate amount of waste cloth in the cylinder. The high-temperature and high-pressure dyeing machine ensures that the high-speed water sprayed from the nozzle is flushed through the waste cloth to a "dead angle" that is difficult to reach in the usual cycle.

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