阅读说明：本技术 一种调节印染水洗机pH值的方法及用于该方法的输送系统 (Method for adjusting pH value of printing and dyeing rinsing machine and conveying system used for method ) 是由 王力民 孙红玉 盛春英 闫英山 周志玲 张津 贾荣霞 石鲁美 刘晓敏 王静茹 于 于 2020-06-16 设计创作，主要内容包括：本发明提供了一种调节印染水洗机pH值的方法及用于该方法的输送系统,该方法的过程为：将布面在清水区初步清洗后,导入调节区继续清洗,调节区内通入二氧化碳气体调节水洗槽内溶液的pH值,当布面经调节区清洗后,其pH值在5.0-7.5之间。该输送系统包括液体储罐,水洗机包括n个水洗槽,水洗槽分为清水区和调节区,清水区的个数为a,调节区的个数为b,a+b＝n,液体储罐与水洗槽的调节区通过管路连接,且在连接管路上依次设有流量计A和阀门A。使用该方法对布面调整pH值,具有布面pH范围维持在5.0-7.5之间、pH稳定的优点,使用该输送系统对二氧化碳输送,达到对二氧化碳利用率高、布面pH变化稳定的优点。(The invention provides a method for adjusting the pH value of a printing and dyeing rinsing machine and a conveying system used for the method, and the method comprises the following processes: after the cloth cover is primarily cleaned in the clear water area, the cloth cover is led into the adjusting area to be continuously cleaned, carbon dioxide gas is introduced into the adjusting area to adjust the pH value of the solution in the water washing tank, and when the cloth cover is cleaned in the adjusting area, the pH value is between 5.0 and 7.5. This conveying system includes liquid storage tank, and the rinsing machine includes n rinsing baths, and the rinsing bath divide into clear water district and regulatory region, and the number in clear water district is an, and the number of regulatory region is b, and a + b is n, and liquid storage tank passes through the tube coupling with the regulatory region of rinsing bath, and is equipped with flowmeter A and valve A on the connecting pipeline in proper order. The method for adjusting the pH value of the cloth cover has the advantages that the pH range of the cloth cover is maintained between 5.0 and 7.5, and the pH value is stable, and the conveying system is used for conveying carbon dioxide, so that the advantages of high utilization rate of the carbon dioxide and stable pH change of the cloth cover are achieved.)

1. A method for adjusting the pH value of a printing and dyeing rinsing machine is characterized by comprising the following steps: after the cloth cover is primarily cleaned in the clear water area, the cloth cover is led into the adjusting area to be continuously cleaned, carbon dioxide gas is introduced into the adjusting area to adjust the pH value of the solution in the water washing tank, and when the cloth cover is cleaned in the adjusting area, the pH value is between 5.0 and 7.5.

2. The method of adjusting the pH of a printing and dyeing washer according to claim 1, wherein the fabric is dyed or printed.

3. The method for adjusting the pH of a printing and dyeing washing machine as claimed in claim 1, characterized in that in the adjustment zone, liquid carbon dioxide is conveyed into the corresponding washing tank of the washing machine through a conveying pipeline, the conveying pressure is controlled to be 0.1-0.5MPa during the conveying process, and the conveying is stopped after 30min of water introduction.

4. A method of adjusting the pH of a printing and dyeing washer according to claim 3 wherein the grammage of the cloth is greater than 150g/m²While controlling the delivery pressure P₁P is more than 0.3₁≤0.5MPa。

5. A method of adjusting the pH of a printing and dyeing washing machine as claimed in claim 3, characterized in that the grammage of the cloth is 70-150g/m²In between, control the delivery pressure P₂P is not less than 0.1₂≤0.3MPa。

6. A transport system for use in a method of adjusting the pH of a printing and dyeing washing machine as claimed in any one of claims 1 to 5, comprising a liquid storage tank and a washing machine, said washing machine comprising n washing tanks, n being a positive integer equal to or greater than 2;

The washing tank is divided into a clean water area and an adjusting area, the number of the clean water area is a, the number of the adjusting area is b, a + b is n, and a and b are positive integers more than or equal to 1; the liquid storage tank is connected with the adjusting area of the rinsing bath through a pipeline, and a flowmeter A and a valve A are sequentially arranged on the connecting pipeline.

7. A delivery system according to claim 6, wherein a valve B is provided in the conduit between the liquid reservoir and the flowmeter A.

8. The delivery system of claim 6, wherein the conduits include a main conduit and a branch conduit, the number of branch conduits being b.

9. The delivery system of claim 8, wherein a flow meter B and a valve C are provided in each of the branch lines.

Technical Field

The invention relates to the technical field of pH adjustment of a printing and dyeing cloth cover, in particular to a method for adjusting the pH value of a printing and dyeing rinsing machine and a conveying system for the method.

Background

The textile industry is an important industry in the light industry of China and has an important position in economic development. The production of textiles and clothes in China occupies a world important position, and the development of textile cloth covers can directly influence the development of the textiles and clothes products.

The textile cloth cover is the basis for preparing clothes and textiles, and the quality index of the textile cloth cover directly influences finished products. In the quality indexes of textile fabric surfaces, the pH value is an important index required by customers and also an important ecological assessment index in the national mandatory standard GB18401-2010 national basic safety technical Specification for textile products, and mainly because a layer of weakly acidic material is arranged on the surface layer of human skin, when the pH value of the fabric surface directly contacted with a body is alkaline, skin itch and even allergy can be caused, so that the pH value of the fabric surface is adjusted, and the application range and the use comfort level of the fabric are improved.

The pH value of tap water is about 8, therefore, after the tap water is used for dissolving fuel and dyeing cloth covers, the dyed cloth covers are inevitably needed to be neutralized to reduce the pH value of the cloth covers, in the prior art, the method of adjusting by adding acid is most commonly used, however, in the actual production, the method of adjusting the pH value of the cloth covers to adjust the color of the partial cloth covers by adding acid can cause the change of the color of the cloth covers, particularly emerald blue, rose red, coffee color and the like, can cause the change of dye structures to cause the change of color light, and in addition, for bleaching products, the whiteness is not high due to the adjustment of the pH value by adding acid.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a method for adjusting the pH value of a dyeing rinsing machine and a conveying system used for the method, in particular to a method for adjusting the pH value of a solution by introducing carbon dioxide into a rinsing tank of the rinsing machine so as to adjust the pH value of a cloth cover in the process of rinsing the cloth cover, the method is used for adjusting the pH value of the cloth cover, the method has the advantages that the pH range of the cloth cover is maintained between 5.0 and 7.5, the pH is stable, the pH adjustment is indirectly carried out on the cloth cover by introducing the carbon dioxide, the operation is simple, the control is easy, the pH adjustment is carried out on the cloth cover by using the aspect, the influence on the color light of the cloth cover is avoided, and the color and luster stability of the cloth cover can be kept; the conveying system is used for conveying carbon dioxide, and has the advantages of high utilization rate of carbon dioxide and stable pH change of cloth cover.

The technical scheme of the invention is as follows:

a method for adjusting the pH value of a printing and dyeing rinsing machine comprises the following steps: after the cloth cover is primarily cleaned in the clear water area, the cloth cover is led into the adjusting area to be continuously cleaned, carbon dioxide gas is introduced into the adjusting area to adjust the pH value of the solution in the water washing tank, and when the cloth cover is cleaned in the adjusting area, the pH value is between 5.0 and 7.5.

Preferably, the cloth cover is a dyed or printed cloth cover.

Preferably, in the adjusting area, the liquid carbon dioxide is conveyed into a corresponding rinsing tank of the rinsing machine through a conveying pipeline, the conveying pressure is controlled to be 0.1-0.5MPa in the conveying process, and after the liquid carbon dioxide is introduced into water for 30min, the conveying pressure is reduced when the pH value of the water reaches the required pH value, so that the overflow waste of the carbon dioxide is reduced.

Preferably, when the gram weight of the cloth surface is more than 150g/m²While controlling the delivery pressure P₁P is more than 0.3₁≤0.5MPa。

Preferably, the gram weight of the cloth cover is 70-150g/m²In between, control the delivery pressure P₂P is not less than 0.1₂≤0.3MPa。

The conveying system used for the method comprises a liquid storage tank and a rinsing machine, wherein the rinsing machine comprises n rinsing tanks, and n is a positive integer greater than or equal to 2;

the washing tank is divided into a clean water area and an adjusting area, the number of the clean water area is a, the number of the adjusting area is b, a + b is n, and a and b are positive integers more than or equal to 1;

The liquid storage tank passes through the tube coupling with the regulation district of wash bowl, and is equipped with flowmeter A and valve A on connecting the pipeline in proper order, according to the thickness adjustment valve A of cloth cover, cooperates flowmeter A to observe the flow of liquid carbon dioxide in the pipeline, reaches under the prerequisite to cloth cover pH value adjustment, practices thrift liquid carbon dioxide's quantity.

Preferably, in order to further improve the control of the liquid carbon dioxide in the system, a valve B is arranged on a pipeline between the liquid storage tank and the flowmeter a, and controls the liquid carbon dioxide together with the valve a, so that the use safety of the liquid carbon dioxide is improved.

Preferably, the pipelines comprise a main pipeline and branch pipelines, the number of the branch pipelines is b, so that each branch pipeline is directly connected with the rinsing bath of the adjusting area to control the amount of liquid carbon dioxide entering the rinsing bath.

Preferably, the branch pipelines are respectively provided with a flowmeter B and a valve C for observing and metering the amount of the liquid carbon dioxide entering the regulating area water washing tank.

When liquid carbon dioxide is used for adjusting the pH of the solution in the water washing tank in the adjusting area, the pH value in the water is gradually reduced along with the introduction of the carbon dioxide, and the following reactions occur:

H₂0+CO₂＝H₂CO₃

the carbonic acid dissolves in the water, rendering the water acidic. The purpose of adjusting the pH value of the cloth surface is achieved.

Compared with the prior art, the invention has the beneficial effects that:

(1) the waste carbon dioxide gas is recycled, and part of the carbon dioxide gas participates in the neutralization reaction in the whole process, so that the greenhouse effect of the carbon dioxide is reduced; in addition, the method has the advantages of low carbon dioxide corrosivity, high safety, convenient use and environmental friendliness, and is a novel, simple, safe and efficient method.

(2) The pH value of the cloth surface is regulated by using carbon dioxide, the carbon dioxide is limited to the solubility in water, and the problem of pH value over regulation can be effectively avoided.

(3) For the fabric with higher alkalinity, the solubility of carbon dioxide in water can be increased by controlling the pressure of the introduced carbon dioxide, so that the pH value of the fabric surface can be effectively controlled; and the method provided by the invention does not need to monitor the pH of the solution in the adjusting area in time in the process of introducing the carbon dioxide, and has the advantages of easy operation and convenient use.

(4) By using the method provided by the invention, the pH values of cloth covers which are emerald blue, rose red and coffee are respectively adjusted, and the color light of the cloth covers is more bright.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of a delivery system.

In the figure, 1-a liquid storage tank, 2-a washing machine, 3-a washing tank, 301-a clear water area, 302-a regulating area, 4-a main pipeline, 5-branch pipelines, 6-a valve B, 7-a flowmeter A, 8-a valve A, 9-a flowmeter B, 10-a valve C, 11-a pressure gauge A and 12-a pressure gauge B.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.