PH value detection device for dyeing machine

Abstract

The utility model discloses a dyeing machine pH value detection device which comprises a detection tank, a pH value test probe, a dye liquor inlet, a dye liquor outlet, a water outlet, an air inlet and a clear water inlet, the pH value test probe is inserted and hung in the detection tank, and the bottom of the detection tank is communicated with the water outlet through a water drainage pipeline. The lower part of the detection tank is communicated with a dye liquor inlet through a dye liquor inlet pipeline, the upper part of the detection tank is communicated with a dye liquor outlet through a dye liquor outlet pipeline, the top end of the detection tank is respectively communicated with a clear water inlet and an air inlet through a water inlet pipeline and an air inlet pipeline, and the dye liquor inlet and the dye liquor outlet are respectively communicated with a dye liquor circulating pipeline of the dyeing machine. The dye liquor pH value detection device is installed on the dye liquor circulating pipeline of the dyeing machine, the dye liquor pH value is dynamically detected in real time in the dyeing process of the dyeing machine, the pH value in the dye liquor is automatically supplemented according to the detection result, and it is ensured that the pH value in the dye liquor in the dyeing process always meets the requirement of the dyeing technology.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth dyeing, in particular to a pH value detection device for a dyeing machine. Background Art

[0002] When dyeing various textile fabrics with existing dyeing machines, the dye liquor used is prepared in advance according to the dyeing process requirements of the fabrics to be dyed and then injected into the main cylinder of the dyeing machine filled with water to form the dye liquor for dyeing. Due to uncertain factors such as dilution when the prepared dye liquor is injected into the main cylinder and changes in working conditions such as the continuous coloring of the fabrics to be dyed during the dyeing process, the pH value content in the dye liquor will also change (usually decrease). The decrease in the pH value will seriously affect the color fastness and quality of the fabrics after dyeing. At present, the pH adjustment of the dye liquor during the operation of various dyeing machines is detected and supplemented after the dyeing is completed. However, once the fabrics that have been dyed encounter the condition of a decrease in the pH value in the dye liquor, they cannot be remedied. Content of the Utility Model

[0003] To solve the above technical problems, the utility model designs a pH value detection device for a dyeing machine. The pH value detection device uses a detection probe to detect the pH value in the dye liquor in real time online and feeds the detection data back to the control computer of the dyeing machine. The control computer of the dyeing machine automatically replenishes the pH value of the dye liquor in real time according to the detection parameters.

[0004] The utility model adopts the following technical scheme:

[0005] A pH value detection device for a dyeing machine includes a detection tank, a pH value test probe, a dye liquor water inlet, a dye liquor water outlet, a drain port, an air inlet, and a clean water inlet. The pH value test probe is inserted and suspended in the detection tank. The bottom of the detection tank is connected to the drain port through a drain pipeline. The lower part of the detection tank is connected to the dye liquor water inlet through a dye liquor inlet pipeline. The upper part of the detection tank is connected to the dye liquor water outlet through a dye liquor outlet pipeline. The top of the detection tank is connected to the clean water inlet and the air inlet through a water inlet pipeline and an air inlet pipeline respectively. An automatic valve one, an automatic valve two, an automatic valve three, an automatic valve four, and a check valve are respectively installed on the dye liquor inlet pipeline, the dye liquor outlet pipeline, the water inlet pipeline, the drain pipeline, and the air inlet pipeline. The automatic valve one, the automatic valve two, the automatic valve three, the automatic valve four, the check valve, and the pH value test probe are respectively connected and controlled by the control computer of the dyeing machine. The dye liquor water inlet and the dye liquor water outlet are respectively connected to the dye liquor circulation pipeline of the dyeing machine.

[0006] Preferably, a manual valve one is further installed on the dye liquor inlet pipeline.

[0007] Preferably, a manual valve two is further installed on the dye liquor outlet pipeline.

[0008] Preferably, the automatic valve one, the automatic valve two, the automatic valve three, and the automatic valve four adopt electric control valves.

[0009] Preferably, the dye solution circulation pipeline of the dyeing machine is located on the dyeing machine filter or the pipeline at the front end of the heat exchanger.

[0010] The beneficial effects of the present utility model are as follows: A dye solution pH value detection device is installed on the dye solution circulation pipeline of the dyeing machine to perform real-time dynamic detection of the pH value of the dye solution during the dyeing process of the dyeing machine. The pH value in the dye solution is automatically supplemented according to the detection result to ensure that the pH value in the dye solution always meets the requirements of the dyeing process during the dyeing process. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a top view of the present utility model;

[0013] In the figure: 1, detection tank; 2, pH value test probe; 3, dye solution water inlet; 4, dye solution water outlet; 5, drain outlet; 6, air inlet; 7, clean water inlet; 8, dye solution circulation pipeline of the dyeing machine; 9, automatic valve I; 10, automatic valve II; 11, automatic valve III; 12, automatic valve IV; 13, check valve; 14, manual valve I; 15, manual valve II. Specific Embodiments

[0014] The technical solution of the present utility model will be further specifically described below through specific embodiments in conjunction with the drawings:

[0015] Embodiment: As shown in Figure 1 and Figure 2 A pH value detection device for a dyeing machine includes a detection tank 1, a pH value test probe 2, a dye solution water inlet 3, a dye solution water outlet 4, a drain outlet 5, an air inlet 6, and a clean water inlet 7. The pH value test probe is inserted and suspended in the detection tank. The bottom of the detection tank is connected to the drain outlet through a drain pipeline. The lower part of the detection tank is connected to the dye solution water inlet through a dye solution inlet pipeline. The upper part of the detection tank is connected to the dye solution water outlet through a dye solution outlet pipeline. The top of the detection tank is connected to the clean water inlet and the air inlet through a water inlet pipeline and an air inlet pipeline respectively. An automatic valve I 9, an automatic valve II 10, an automatic valve III 11, an automatic valve IV 12, and a check valve 13 are respectively installed on the dye solution inlet pipeline, the dye solution outlet pipeline, the water inlet pipeline, the drain pipeline, and the air inlet pipeline. The automatic valve I, the automatic valve II, the automatic valve III, the automatic valve IV, the check valve, and the pH value test probe are respectively connected and controlled by the control computer of the dyeing machine. The dye solution water inlet and the dye solution water outlet are respectively connected to the dye solution circulation pipeline 8 of the dyeing machine.

[0016] A manual valve I (14) is also installed on the inlet pipeline of the dye solution. A manual valve II (15) is also installed on the outlet pipeline of the dye solution. The manual valve I and the manual valve II play an auxiliary control role. They are normally open when the pH value detection device is in normal use and are manually closed during the suspension period of the pH value detection device, playing a role of double guarantee for stopping work.

[0017] The automatic valve I, the automatic valve II, the automatic valve III, and the automatic valve IV adopt electrically controlled valves. The dye solution circulation pipeline of the dyeing machine is located on the pipeline of the dyeing machine filter or at the front end of the heat exchanger.

[0018] When the utility model works, in view of the temperature resistance performance and maintenance requirements of the current pH value detection probe, at the beginning of the dyeing process, first open the automatic valve IV to drain the protective liquid in the detection tank. After draining, close the automatic valve IV. When the temperature in the main cylinder of the dyeing machine rises to 40 °C, open the automatic valve I and the automatic valve II. The dye solution for circulating dyeing enters from the inlet of the dye solution and water, passes through the detection tank, gradually rises in the detection tank to submerge the detection probe, and is discharged from the outlet of the dye solution and water for pH value detection of the dye solution, and the detected value is fed back to the control computer of the dyeing machine. When the temperature in the main cylinder of the dyeing machine rises to 55 °C, close the automatic valve I and the automatic valve II to stop the detection. Open the automatic valve IV in the drainage port pipeline. After draining the dye solution in the detection tank, open the check valve in the air inlet pipeline and the automatic valve III in the clear water inlet pipeline, and use compressed air and clear water to enter the pH value test probe through the internal space of the pH value test probe device for cleaning under the combined action of compressed air and water, cleaning the dye solution scale adhering to the probe surface during the detection process. After the cleaning is completed, close the check valve, the automatic valve III, and the automatic valve IV to stop the cleaning operation. Then open the automatic valve III to inject clear water into the detection tank until it submerges the detection probe and then close it to protect the detection probe by immersing it in clear water.

[0019] When the temperature in the main cylinder of the dyeing machine drops to 80 °C - 60 °C (or manually lower the temperature in the main cylinder of the dyeing machine to 80 °C - 60 °C when other process stages require detection), repeat the above steps for re-detection (or multiple detections). Due to the requirements of the dyeing process, when the temperature drops below 60 °C, the automatic valve I and the automatic valve II are closed, and the pH value detection device stops working.

[0020] The above embodiments are only a preferred solution of the utility model, and do not impose any form of limitation on the utility model. There are other variants and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A pH value detection device for a dyeing machine, characterized in that: The invention comprises a detection tank, a pH value test probe, a dye liquid water inlet, a dye liquid water outlet, a drain outlet, an air inlet and a clean water inlet. The pH value test probe is inserted and suspended in the detection tank. The bottom of the detection tank is connected to the drain outlet through a drain pipeline. The lower part of the detection tank is connected to the dye liquid water inlet through a dye liquid inlet pipeline. The upper part of the detection tank is connected to the dye liquid water outlet through a dye liquid outlet pipeline. The top of the detection tank is respectively connected to the clean water inlet and the air inlet through a water inlet pipeline and an air inlet pipeline. Automatic valve one, automatic valve two, automatic valve three, automatic valve four and a check valve are respectively installed on the dye liquid inlet pipeline, the dye liquid outlet pipeline, the water inlet pipeline, the drain pipeline and the air inlet pipeline. The automatic valve one, the automatic valve two, the automatic valve three, the automatic valve four, the check valve and the pH value test probe are respectively connected and controlled by a dyeing machine control computer. The dye liquid water inlet and the dye liquid water outlet are respectively connected to the dye liquid circulation pipeline of the dyeing machine.

2. The pH value detection device for a dyeing machine according to claim 1, characterized in that: A manual valve 1 is also installed on the dye liquor inlet pipeline.

3. The pH value detection device for a dyeing machine according to claim 1, characterized in that: A manual valve 2 is also installed on the dye solution outlet pipeline.

4. The pH value detection device for a dyeing machine according to claim 1, characterized in that: The automatic valve 1, automatic valve 2, automatic valve 3 and automatic valve 4 are electrically controlled valves.

5. The pH value detection device for a dyeing machine according to claim 1, characterized in that: The dyeing machine dye liquor circulation pipeline is located on the dyeing machine filter or on the pipeline at the front end of the heat exchanger.

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