A high temperature and high pressure gas-liquid dyeing machine and its control method

Abstract

The invention discloses a high-temperature high-pressure gas-liquid dyeing machine and a control method thereof. The high-temperature high-pressure gas-liquid dyeing machine comprises a main cylinder, a cloth lifting wheel, an airflow nozzle, a dyeing liquid nozzle, a heat exchanger, a main dyeing liquid pump and a fan component, and the airflow nozzle and the dyeing liquid nozzle are separated and can conveniently and quickly control parameters of airflow and dyeing liquid flow independently according to characteristics of to-be-dyed fabric. The airflow nozzle is positioned in front of the dyeing liquid nozzle, so that the wound fabric can be blown fluffily by high-pressure airflow, dyeing liquid spraying and penetrating is performed afterwards, using efficiency of dyeing liquid is improved greatly, leveling performance and dye yield rate of dyeing are improved, dyeing time is reduced, total consumption of auxiliaries and dye is lowered, and total COD quantity is lowered effectively. By the high-temperature high-pressure gas-liquid dyeing machine, more uniformity in dyeing can be realized, energy consumption of a gas-liquid split-flow dyeing machine is lowered, and the objectives of energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to a high-temperature and high-pressure gas-liquid split dyeing machine and a control method thereof. Background technique [0002] Currently widely used high-temperature and high-pressure gas (temperature higher than 100°C, pressure higher than 1 atmosphere) dyeing machine mainly has two types according to the dyeing principle: overflow dyeing machine and air atomization dyeing machine. The overflow dyeing machine has the disadvantages of large liquor ratio, high power consumption, many dyeing and chemical auxiliaries, and long process time, and the dyeing quality also has problems such as creases on the fixed cloth surface and poor tubes. The air atomization dyeing machine adopts the principle of aerodynamics, and uses the air nozzle to atomize and spray the dye solution onto the fabric, so as to solve the various shortcomings of the overflow dyeing machine, and gradually become th...

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Problems solved by technology

[0004] (1) The air flow needs to atomize the dye liquor in the mixing chamber first, and then blow the fabric through the nozzle to carry out the dyeing at the same time, because the air flow and the dye liquor Inconsistencies in the respective pressures and flow angles before mixing lead to a large amount of turbulent flow when the airflow contacts and atomizes the dye liquor, which wastes a lot of kinetic energy, reduces efficiency, and leads to a sharp increase in energy consumption.

[0005] (2) The air atomization dyeing machine relies on the power of the air flow to pull the fabric forward, requiring high flow and high pressure airflow to pull the fabric, which makes the fan energy consumption high

[0006] (3) The dyeing liquid and the air flow are first atomized and then blown through the nozzle to dye the fabric at the same time. Due to the characteristics of the fabric, the higher the moisture content, the harder it is to fluff and blow off, resulting in the fact that the fabric is often dyed before it is completely fluffy. The process is over, so that the dyeing solution does not penetrate completely, the level dyeing performance is poor, and the color yield is low. To solve this problem, the air atomization dyeing machine can only prolong the dyeing time, increase the amount of auxiliaries and dyes, and blow the cloth to make the cloth fluffy. It is necessary to increase the flow rate and pressure of airflow, dyeing liquor, resulting in an increase in energy consumption and an increase in the total amount of COD emissions;

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