Dyeing machine online detection acid adding device and dyeing machine

Abstract

The utility model relates to the field of dyeing machines, in particular to a dyeing machine online detection acid adding device and a dyeing machine. The dyeing machine online detection acid adding device is used for being arranged at a main circulating pump of a main circulating flow path of a dyeing machine and comprises a detection flow path and an acid adding mechanism, the detection flow path comprises a cooling mechanism, a PH detection mechanism, a liquid storage mechanism and a feeding pump which are sequentially connected in series, and a liquid inlet of the cooling mechanism is used for being communicated with an outlet of the main circulating pump; a liquid outlet of the feeding pump is used for being communicated with an inlet of the main circulating pump, and the liquid storage mechanism is further communicated with atmospheric pressure; the acid adding mechanism communicates with the liquid storage mechanism and is used for adding acid into the liquid storage mechanism. The cooling mechanism is used for cooling, and the liquid storage mechanism is used for releasing pressure, so that the influence of a high-temperature and high-pressure environment on the PH detection mechanism is avoided, the accuracy of PH online detection is improved, and online accurate acid adding is realized.

Description

Technical Field

[0001] This utility model relates to the field of dyeing machines, specifically to an online detection and acid addition device for dyeing machines and a dyeing machine. Background Technology

[0002] During the dyeing process, the main circulation pump provides power to circulate the dye liquor along the main circulation path, ensuring full contact between the fabric and the dye liquor. The pH value of the dye liquor determines the bonding state between the dye liquor and the fabric, thus determining the dyeing quality.

[0003] In order to achieve online measurement and control of the pH value of the dyeing solution in the dyeing machine, the inventor of this patent application previously applied for an invention patent with application number CN201611028207.5, entitled "Online Detection Device for Process Liquid Parameters of Intermittent Dyeing Machine". In this patent, a detection flow path is formed by a sample cooling unit and a sample detection unit connected in series. The liquid is taken from the outlet of the main circulation pump, cooled by the sample cooling unit, and the pH value is detected by the sample detection unit before returning to the inlet of the main circulation pump.

[0004] However, in actual production, it was found that the sample detection unit in the patent had an inaccurate pH detection problem, which led to inaccurate pH control of the dye solution after adding acid.

[0005] Therefore, it is urgent to solve the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an online detection and acid addition device for dyeing machines. It uses a cooling mechanism to cool and a liquid storage mechanism to depressurize, thereby avoiding the influence of high temperature and high pressure environment on the pH detection mechanism, improving the accuracy of online pH detection, and realizing online precise acid addition.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is: an online detection and acid addition device for a dyeing machine, configured at the main circulation pump in the main circulation path of the dyeing machine, comprising:

[0008] The detection flow path includes a cooling mechanism, a pH detection mechanism, a liquid storage mechanism, and a feed pump connected in series. The liquid inlet of the cooling mechanism is used to connect to the outlet of the main circulation pump, the liquid outlet of the feed pump is used to connect to the inlet of the main circulation pump, and the liquid storage mechanism is also connected to atmospheric pressure.

[0009] An acid-adding mechanism, connected to the liquid storage mechanism, is used to add acid into the liquid storage mechanism.

[0010] To further ensure the accuracy of the pH testing results, the pH testing mechanism is connected to the top edge of the liquid storage mechanism via a pipe, and the bottom middle of the liquid storage mechanism is connected to the feeding pump.

[0011] Furthermore, to ensure rapid and uniform mixing of the newly added acid with the dye solution in the storage mechanism during acid addition, the acid addition mechanism is connected to the pipeline, thereby connecting to the storage mechanism via the pipeline; wherein,

[0012] The end of the pipe that extends into the liquid storage mechanism is a circumferential part that surrounds the liquid storage mechanism, and the circumferential part is provided with multiple liquid outlets along the extension direction.

[0013] Furthermore, to facilitate connection with other components, the online detection and acid addition device for the dyeing machine also includes:

[0014] The sampling liquid inlet connection is connected to the liquid inlet of the cooling mechanism, and the liquid inlet of the cooling mechanism is used to connect to the outlet of the main circulation pump through the sampling liquid inlet connection.

[0015] The sampling liquid outlet connection is connected to the outlet of the feed pump, and the outlet of the feed pump is used to connect to the inlet of the main circulation pump through the sampling liquid outlet connection.

[0016] The cooling water inlet connection is connected to the water inlet of the cooling mechanism;

[0017] The cooling water outlet connection is connected to the outlet of the cooling mechanism.

[0018] Furthermore, to facilitate cleaning of the entire device, the water inlet of the cooling mechanism is connected to its liquid inlet and the liquid inlet of the liquid storage mechanism via valves.

[0019] The outlet of the feed pump is connected to the sewage tank via a valve.

[0020] Furthermore, to facilitate the connection of the feed pump to the sewage tank, the online detection and acid addition device for the dyeing machine also includes a sewage discharge connection end. The outlet of the feed pump is connected to the sewage discharge connection end through a valve, and the sewage discharge connection end is connected to the sewage tank.

[0021] Furthermore, the online detection acid addition device for the dyeing machine also includes a probe protection mechanism, which is connected to the pH detection mechanism via a valve.

[0022] Furthermore, to facilitate the direct discharge of the chemical additives applied by the probe protection mechanism, the outlet of the pH detection mechanism is also connected to the sewage tank via a valve.

[0023] Furthermore, the acid addition mechanism includes a metering pump, the outlet of which is connected to the liquid storage mechanism via a valve.

[0024] Furthermore, the outlet of the feed pump is connected to the inlet of the main circulation pump through a return pipe, and the inner diameter of the outlet of the return pipe is the minimum inner diameter of the end of the return pipe closest to the main circulation pump.

[0025] This utility model also relates to a dyeing machine, including an online detection and acid addition device for the dyeing machine.

[0026] By adopting the above technical solution, this utility model has the following beneficial effects:

[0027] 1. A liquid storage mechanism connected to atmospheric pressure is configured in the detection flow path. The dye solution sampled from the main circulation pump outlet is first cooled by a cooling mechanism, and then flows into the liquid storage mechanism through the pH detection mechanism. The liquid storage mechanism can play a role in pressure relief and buffering, thereby reducing the pressure at the pH detection mechanism and making the temperature and pressure at the pH detection mechanism as close as possible to the detection environment during offline detection. This ensures that the pH detection mechanism can accurately detect the pH value of the dye solution and avoids damage to the probe of the pH detection mechanism caused by the high temperature and high pressure environment. If the pH value is lower than the threshold, an appropriate amount of acid can be added to the liquid storage mechanism through an acid addition mechanism. Accurately obtaining the pH value is a prerequisite for accurate acid addition. Therefore, this utility model can effectively solve the problem of measuring and controlling the pH value in a high temperature and high pressure environment, which can both protect the normal use of the probe and accurately control the amount of acid added.

[0028] 2. After the pressure is released by the liquid storage mechanism, the top of the liquid storage mechanism is at atmospheric pressure. This utility model also sets a feeding pump between the liquid outlet of the liquid storage mechanism and the liquid inlet of the main circulation pump, so as to ensure that the dye liquor after acid addition in the liquid storage mechanism can quickly return to the main circulation path, thereby quickly regulating the pH of the dye liquor in the dyeing machine online. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the online detection and acid addition device for the dyeing machine of this utility model;

[0030] Figure 2 for Figure 1 Piping connection diagram;

[0031] Figure 3 for Figure 2 Connection schematic diagram;

[0032] Figure 4 This is a schematic diagram illustrating the working principle of the online detection and acid addition device for dyeing machines according to this utility model.

[0033] Figure 5 This is a schematic diagram illustrating the cleaning principle of the online detection and acid addition device for the dyeing machine according to this utility model.

[0034] In the diagram, 1. Cooling mechanism; 2. pH detection mechanism; 3. Liquid storage mechanism; 4. Feeding pump; 5. Acid addition mechanism; 6. Sampling liquid inlet connection; 7. Sampling liquid outlet connection; 8. Cooling water inlet connection; 9. Cooling water outlet connection; 10. Valve; 11. Wastewater tank; 12. Sewage discharge connection; 13. Probe protection mechanism; 100. Main circulation pump. Detailed Implementation

[0035] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0036] like Figures 1 to 5 As shown, an online detection and acid addition device for a dyeing machine is used to configure the main circulation pump 100 in the main circulation path of the dyeing machine, comprising:

[0037] The detection flow path includes a cooling mechanism 1, a pH detection mechanism 2, a liquid storage mechanism 3, and a feed pump 4 connected in series. The liquid inlet of the cooling mechanism 1 is connected to the outlet of the main circulation pump 100, the liquid outlet of the feed pump 4 is connected to the inlet of the main circulation pump 100, and the liquid storage mechanism 3 is also connected to atmospheric pressure.

[0038] An acid-adding mechanism 5 is connected to a liquid storage mechanism 3 and is used to add acid to the liquid storage mechanism 3. The acid-adding mechanism 5 includes a metering pump, the outlet of which is connected to the liquid storage mechanism 3 via a valve 10.

[0039] In this embodiment, the liquid storage mechanism 3 can be a liquid storage tank or a liquid storage vessel. The pH detection mechanism 2 can be the pH sensor described in patent application number CN201611028207.5, entitled "Online Detection Device for Process Liquid Parameters of Intermittent Dyeing Machine," or other components capable of detecting pH. The cooling mechanism 1 can be a partition wall heat exchanger or other units capable of cooling the dye liquor.

[0040] The inventors of this patent discovered in practical application that the patent with application number CN201611028207.5, entitled "Online Detection Device for Process Liquid Parameters of Intermittent Dyeing Machine" (i.e., the patent mentioned in the background art), involves dye liquor sampled from the outlet of the circulating pump, cooled by the sample cooling unit, entering the sample detection unit, and then directly returning to the inlet of the circulating pump. The entire detection flow path shares a common power source with the main circulating flow path of the dye liquor in the dyeing machine, using the circulating pump as the power source. Therefore, the entire detection flow path is under high pressure. This high-pressure environment affects the accuracy of the detection results of the sample detection unit, including the pH sensor, and also affects the reliability and lifespan of the sample detection unit, including the pH sensor. Furthermore, this high-pressure environment causes the dye liquor to pass through the sample detection unit, including the pH sensor, at a relatively fast speed, further affecting the accuracy of the detection results.

[0041] In this embodiment, a liquid storage mechanism 3 connected to atmospheric pressure is configured in the detection flow path. The dye solution sampled from the outlet of the main circulation pump 100 is first cooled by the cooling mechanism 3, and then flows into the liquid storage mechanism 3 through the pH detection mechanism 2. The liquid storage mechanism 3 can play a role in depressurization and buffering, thereby reducing the pressure at the pH detection mechanism 2 and making the temperature and pressure at the pH detection mechanism 2 as close as possible to the detection environment during offline detection. This ensures that the pH detection mechanism 2 can accurately detect the pH value of the dye solution and avoids damage to the probe of the pH detection mechanism 2 caused by the high temperature and high pressure environment. If the pH value is lower than the threshold, the corresponding amount of acid can be added to the liquid storage mechanism 3 through the acid addition mechanism 5. Accurately obtaining the pH value is a prerequisite for accurate acid addition. Therefore, this embodiment can effectively solve the problem of measuring and controlling the pH value in a high temperature and high pressure environment, which can both protect the normal use of the probe and accurately control the amount of acid added.

[0042] In addition, after the pressure is released by the liquid storage mechanism 3, the top of the liquid storage mechanism 3 is at atmospheric pressure. In this embodiment, a feeding pump 4 is also set between the liquid outlet of the liquid storage mechanism 3 and the liquid inlet of the main circulation pump 100, so as to ensure that the dye liquor after acid addition in the liquid storage mechanism 3 can quickly return to the main circulation path, thereby quickly regulating the pH of the dye liquor in the dyeing machine online.

[0043] In one embodiment, such as Figure 1 and Figure 2 As shown, the pH detection unit 2 is connected to the top edge of the liquid storage unit 3 via a pipe, and the bottom middle of the liquid storage unit 3 is connected to the feed pump 4.

[0044] In this way, the turbulence formed within the storage mechanism 3 due to the falling dye solution can be minimized, allowing the storage mechanism 3 to better perform its buffering and pressure relief functions. Furthermore, it ensures the smooth flow of dye solution passing through the pH detection mechanism 2, further guaranteeing the accuracy of the pH detection results.

[0045] In one embodiment, the acid-adding mechanism 5 is connected to a pipe between the pH detection mechanism 2 and the liquid storage mechanism 3, so as to connect the liquid storage mechanism 3 through the pipe; wherein, the end of the pipe extending into the liquid storage mechanism 3 is a circumferential part surrounding the liquid storage mechanism 3, and the circumferential part is provided with a plurality of liquid outlets along the extension direction.

[0046] When adding acid, the acid solution enters the pipe directly and flows out from the outlet along with the dye solution. It then falls into the storage mechanism along the circumference of the storage mechanism, ensuring that the newly added acid can be quickly and evenly mixed with the dye solution in the storage mechanism.

[0047] In one embodiment, such as Figure 1 and Figure 2As shown, the online detection and acid addition device of the dyeing machine also includes:

[0048] The sampling liquid inlet connection 6 is connected to the liquid inlet of the cooling mechanism 1, and the liquid inlet of the cooling mechanism 1 is used to connect to the outlet of the main circulation pump 100 through the sampling liquid inlet connection 6.

[0049] The sampling liquid outlet connection 7 is connected to the outlet of the feed pump 4, and the outlet of the feed pump 4 is used to connect to the inlet of the main circulation pump 100 through the sampling liquid outlet connection 7.

[0050] Cooling water inlet connection 8 is connected to the water inlet of cooling mechanism 1;

[0051] Cooling water outlet connection 9 is connected to the outlet of cooling mechanism 1.

[0052] This facilitates the connection between the dye liquor inlet and outlet of the entire online detection and acidification device and the main circulation pump 100 of the dyeing machine, as well as between the cooling mechanism 1 and the external cooling water supply and recovery equipment.

[0053] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the water inlet of the cooling mechanism 1 is also connected to its liquid inlet and the liquid inlet of the liquid storage mechanism 3 through valve 10;

[0054] The outlet of the feed pump 4 is also connected to the sewage tank 11 via valve 10.

[0055] Thus, when the dyeing machine stops, valves 10 are opened between the water inlet and liquid inlet of cooling mechanism 1, between the water inlet of cooling mechanism 1 and the liquid inlet of storage mechanism 3, and between feeding pump 4 and wastewater tank 11. Cleaning water then begins to clean the dye liquor channel of cooling mechanism 1, pH detection mechanism 2, storage mechanism 3, and feeding pump 4, finally flowing into wastewater tank 11. In this embodiment, one stream of cleaning water enters storage mechanism 3 directly, while another stream enters storage mechanism 3 through the dye liquor channel of cooling mechanism 1, which improves cleaning efficiency.

[0056] It should be noted that during normal operation of the dyeing machine, all valves 10 are in the closed state.

[0057] In one embodiment, such as Figure 1 and Figure 2 As shown, the online detection and acid addition device for the dyeing machine also includes a sewage discharge connection 12. The outlet of the feed pump 4 is connected to the sewage discharge connection 12 through the valve 10. The sewage discharge connection 12 is used to connect to the sewage tank 11.

[0058] This facilitates the establishment of a connection between the outlet of the feed pump 4 and the inlet pipe of the sewage tank 11.

[0059] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the online acid addition device for the dyeing machine also includes a probe protection mechanism 13, which is connected to the pH detection mechanism 2 via valve 10. The outlet of the pH detection mechanism 2 is also connected to the wastewater tank 11 via valve 10. Among these, Figure 1 and Figure 2 The connection between the probe protection mechanism 13 and the pH detection mechanism 2 is not shown in the figure.

[0060] The probe protection mechanism 13 stores chemical additives. In this embodiment, two probe protection mechanisms 13 are configured. When the pH detection mechanism 2 is idle, the chemical additives in one probe protection mechanism 13 enter the pH detection mechanism 2, effectively protecting the probe and ensuring its accuracy and lifespan. The other probe protection mechanism 13 is used for automatic probe calibration. Regular automatic probe calibration ensures the normal and stable operation of the production process. Furthermore, when the valve 10 between the pH detection mechanism 2 and the wastewater tank 11 is open, excess chemical additives in the pH detection mechanism 2 can flow directly into the wastewater tank 11 through the open valve 10.

[0061] In one embodiment, the outlet of the feed pump 4 is connected to the inlet of the main circulation pump 100 through a return pipe, and the inner diameter of the outlet of the return pipe is the minimum inner diameter of the end of the return pipe closest to the main circulation pump 100.

[0062] The inner diameter of the outlet end of the reflux pipe can decrease along the direction of the dye liquor flow, and the inner diameter becomes the smallest at the outlet; of course, the reflux pipe can also be abruptly reduced to the smallest at the outlet.

[0063] For example, the normal inner diameter of the return pipe is 20-50mm, but it becomes 4mm at the outlet. This setting is mainly due to the relatively high pressure inside the main circulation pump 100. Under normal circumstances, the feed pump 4 needs to generate sufficient pressure to allow the dye liquor to return to the main circulation pump 100. In this embodiment, the outlet inner diameter of the return pipe is set to be smaller than its normal inner diameter, which can play a pressurizing role at the outlet, thereby reducing the requirements on the feed pump 4 and ensuring that the dye liquor can smoothly return to the main circulation pump 100.

[0064] A dyeing machine includes the online detection and acid addition device for dyeing machines in any of the above embodiments.

[0065] The online detection acid addition device in the dyeing machine includes all the above-mentioned structures (i.e., Figures 1 to 5In the case of the online detection and acid addition device of the dyeing machine shown, when in use, connect the sampling liquid inlet connection 6 to the outlet of the main circulation pump 100, connect the sampling liquid outlet connection 7 to the inlet of the main circulation pump 100, connect the cooling water inlet connection 8 to the cooling water supply pipe, and connect the cooling water outlet connection 9 to the cooling water recovery pipe.

[0066] The specific work process is as follows:

[0067] During normal operation of the main circulation pump 100 of the dyeing machine, all valves 10 are closed. A small portion of the dye liquor at the outlet of the main circulation pump 100 is first cooled by the cooling mechanism 3, and then flows into the storage mechanism 3 through the pH detection mechanism 2. The storage mechanism 3 acts as a pressure relief and buffer, thereby reducing the pressure at the pH detection mechanism 2 and making the temperature and pressure at the pH detection mechanism 2 as close as possible to the detection environment during offline detection. This ensures that the pH detection mechanism 2 can accurately detect the pH value of the dye liquor and avoids damage to the probe of the pH detection mechanism 2 caused by the high temperature and high pressure environment. If the pH value is lower than the threshold, the corresponding amount of acid can be added to the storage mechanism 3 through the acid addition mechanism 5. Accurately obtaining the pH value is a prerequisite for accurate acid addition. Therefore, this embodiment can effectively solve the problem of measuring and controlling the pH value in a high temperature and high pressure environment, which can protect the normal use of the probe and accurately control the amount of acid added, thereby ensuring the dyeing quality of the dyeing machine. The dye solution in the storage mechanism 3 is quickly returned to the main circulation path by the pumping pump 4, which can ensure that the dye solution after acid addition can quickly return to the main circulation path when acid is added in the storage mechanism 3, thereby enabling rapid online control of the pH of the dye solution in the dyeing machine.

[0068] With the dyeing machine stopped, valves 10 are opened between the water inlet and liquid inlet of cooling mechanism 1, between the water inlet of cooling mechanism 1 and the liquid inlet of storage mechanism 3, and between feed pump 4 and wastewater tank 11. Cleaning water then begins to clean the dye liquor channel of cooling mechanism 1, pH detection mechanism 2, storage mechanism 3, and feed pump 4, finally flowing into wastewater tank 11. In this embodiment, one stream of cleaning water enters storage mechanism 3 directly, while another stream enters storage mechanism 3 through the dye liquor channel of cooling mechanism 1, which improves cleaning efficiency.

[0069] During the idle period of pH detection unit 2, the chemical additives in one probe protection mechanism 13 can enter pH detection unit 2, thereby effectively protecting the probe of pH detection unit 2 and ensuring the accuracy and lifespan of the probe. The chemical additives in another probe protection mechanism can also be used to periodically and automatically calibrate the probe, ensuring normal and stable operation of the production process. Furthermore, when the valve 10 between pH detection unit 2 and wastewater tank 11 is open, excess chemical additives in pH detection unit 2 can flow directly into wastewater tank 11 through the open valve 10.

[0070] Therefore, the dyeing machine in this embodiment can realize online pH measurement and control, and online detection of acid addition device cleaning, probe protection, and probe calibration.

[0071] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An online detection and acid addition device for a dyeing machine, configured at the main circulation pump (100) in the main circulation path of the dyeing machine, characterized in that, include: The detection flow path includes a cooling mechanism (1), a pH detection mechanism (2), a liquid storage mechanism (3), and a feed pump (4) connected in series. The inlet of the cooling mechanism (1) is used to connect to the outlet of the main circulation pump (100), the outlet of the feed pump (4) is used to connect to the inlet of the main circulation pump (100), and the liquid storage mechanism (3) is also connected to atmospheric pressure. The acid adding mechanism (5) is connected to the liquid storage mechanism (3) and is used to add acid into the liquid storage mechanism (3).

2. The online detection and acid addition device for dyeing machines according to claim 1, characterized in that, The pH detection mechanism (2) is connected to the top edge of the liquid storage mechanism (3) via a pipe, and the middle position of the bottom of the liquid storage mechanism (3) is connected to the feed pump (4).

3. The online detection and acid addition device for dyeing machines according to claim 2, characterized in that, The acid-adding mechanism (5) is connected to the pipeline, so as to connect the liquid storage mechanism (3) through the pipeline; wherein, The end of the pipe that extends into the liquid storage mechanism (3) is a circumferential part that surrounds the liquid storage mechanism (3), and the circumferential part is provided with multiple liquid outlets along the extension direction.

4. The online detection and acid addition device for dyeing machines according to claim 1, characterized in that, Also includes: The sampling liquid inlet connection end (6) is connected to the liquid inlet of the cooling mechanism (1), and the liquid inlet of the cooling mechanism (1) is used to connect to the outlet of the main circulation pump (100) through the sampling liquid inlet connection end (6); The sampling liquid outlet connection (7) is connected to the outlet of the feed pump (4), and the outlet of the feed pump (4) is used to connect to the inlet of the main circulation pump (100) through the sampling liquid outlet connection (7). The cooling water inlet connection (8) is connected to the water inlet of the cooling mechanism (1); The cooling water outlet connection (9) is connected to the outlet of the cooling mechanism (1).

5. The online detection and acid addition device for dyeing machines according to claim 1, characterized in that, The water inlet of the cooling mechanism (1) is also connected to its liquid inlet and the liquid inlet of the liquid storage mechanism (3) through valves (10); The outlet of the feed pump (4) is also connected to the sewage tank (11) via a valve (10).

6. The online detection and acid addition device for dyeing machines according to claim 5, characterized in that, It also includes a sewage discharge connection (12), the outlet of the feed pump (4) is connected to the sewage discharge connection (12) through a valve (10), and the sewage discharge connection (12) is connected to the sewage tank (11).

7. The online detection and acid addition device for dyeing machines according to claim 1, characterized in that, It also includes a probe protection mechanism (13), which is connected to the pH detection mechanism (2) via a valve (10).

8. The online detection and acid addition device for dyeing machines according to claim 7, characterized in that, The outlet of the pH testing device (2) is also connected to the sewage tank (11) via a valve.

9. The online detection and acid addition device for dyeing machines according to claim 1, characterized in that, The acid addition mechanism (5) includes a metering pump, the outlet of which is connected to the liquid storage mechanism (3) via a valve (10); And / or the outlet of the feed pump (4) is connected to the inlet of the main circulation pump (100) through a return pipe, wherein the inner diameter of the outlet of the return pipe is the minimum inner diameter of the end of the return pipe near the main circulation pump (100).

10. A dyeing machine, characterized in that, Includes the online detection and acid addition device for dyeing machines as described in any one of claims 1-9.

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