Circulating liquid supply system capable of automatically controlling pH value of corrosive liquid

Abstract

The utility model relates to a circulating liquid supply system capable of automatically controlling the pH value of corrosive liquid, and the circulating liquid supply system comprises a first detection branch which comprises a first storage tank, and one part of the corrosive liquid can enter the first storage tank; the second detection branch comprises a second storage tank, and the other part of the corrosive liquid can enter the second storage tank; the detection instrument is used for detecting a first pH value of a part of the corrosive liquid in the first storage tank; detecting a second pH value of the other part of the corrosive liquid in the second storage tank; and the control module is used for acquiring the first pH value and the second pH value and judging whether the first pH value and the second pH value are in a preset pH value range or not. The detection frequency is controllably improved, the detection authenticity is improved, the safety risk possibly caused by manual sampling is avoided, the health and safety of personnel are guaranteed, and meanwhile the workload of the personnel is relieved; one detection branch is used and the other detection branch is standby, so that the consistency of product quality is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of liquid supply, and in particular to a circulating liquid supply system for automatically controlling the pH value of a corrosive liquid. Background Art

[0002] With the development of science and technology and economic globalization, automatic intelligent technology is widely used in traditional manufacturing, forming a new type of intelligent manufacturing. In the electrode foil processing industry, corrosion foil is the key raw material for anodized foil. Its physical and chemical properties directly affect the quality of anodized foil. The production of corrosion foil is a continuous production mode. The stability of the acidity of the corrosion liquid plays a key role in the quality of the corrosion foil. The supply of stable acid corrosion liquid is the key to ensure the production of corrosion foil with excellent physical and chemical properties such as high specific volume and high bending.

[0003] In the related technology, the liquid supply system currently used has certain defects: first, it is impossible to detect the acidity of the production line tank liquid in real time. When the acidity of the tank liquid deviates from the standard acidity range of the corrosive liquid, it will directly affect the product quality and increase the production of defective products; second, the mode of using manual sampling to determine the acidity has the disadvantages of large detection deviation, long hysteresis, high cost, and high personnel safety risks; third, the waste liquid and waste acid generated in the acidity detection process and the production line cannot be effectively utilized, and a certain burden is placed on the natural environment. In summary, the traditional liquid supply system cannot meet the current high-quality production needs. Summary of the invention

[0004] Based on this, it is necessary to provide an environmentally friendly, efficient and safe circulating liquid supply system for automatically controlling the pH value of the corrosion liquid in order to solve the above technical problems.

[0005] A circulating liquid supply system for automatically controlling the pH value of a corrosive liquid, the circulating liquid supply system comprising:

[0006] A first detection branch includes a first storage tank and a first branch connected to the first storage tank, a portion of the corrosive liquid can enter the first storage tank, and the first storage tank is connected to the production line through the first branch;

[0007] A second detection branch includes a second storage tank and a second branch connected to the second storage tank, another part of the corrosive liquid can enter the second storage tank, and the second storage tank is connected to the production line through the second branch;

[0008] a detection instrument connected to the first storage tank to detect a first pH value of a portion of the corrosive liquid in the first storage tank; connected to the second storage tank to detect a second pH value of another portion of the corrosive liquid in the second storage tank; and

[0009] The control module is connected to the detection instrument and is used to obtain the first pH value and the second pH value, and determine whether the first pH value and the second pH value are within a preset pH range. If they are within the preset pH range, the corresponding branch is controlled to provide the corrosive liquid to the production line.

[0010] In one embodiment, the detection instrument is an acid-base neutralization titration detection instrument.

[0011] In one of the embodiments, the circulating liquid supply system further includes a waste liquid storage tank disposed at the outlet of the detection instrument, and the waste liquid storage tank is used to store detection waste liquid generated by the detection.

[0012] In one embodiment, the circulating liquid supply system also includes a purification instrument, which is connected to the outlet of the waste liquid storage tank and is used to purify the detection waste liquid. The purified detection waste liquid flows back to the first detection branch and / or the second detection branch through a pipeline.

[0013] In one embodiment, the circulating liquid supply system also includes a purification instrument, which is connected to the production line and is used to purify the waste liquid generated by the production line; the purified waste liquid flows back to the first detection branch and / or the second detection branch through a pipeline.

[0014] In one of the embodiments, the control module is used to detect the liquid level in the waste liquid storage tank, and when it is detected that the liquid level reaches a preset liquid level value, the control module controls the detected waste liquid to enter the purification instrument.

[0015] In one of the embodiments, the control module is used to control one of the first detection branch and the second detection branch to be in a state of continuously supplying liquid to the production line. When the feedback from the detection instrument indicates that the pH value of the branch currently supplying liquid exceeds a preset pH value range, the control module controls switching to the other of the first detection branch and the second detection branch.

[0016] In one embodiment, the circulating liquid supply system also includes a valve system, which includes a first control valve arranged at the entrance of the first detection branch, a second control valve arranged at the first branch, a third control valve arranged at the entrance of the second detection branch, and a fourth control valve arranged at the second branch; the control module is connected to the valve system.

[0017] In one embodiment, the circulating liquid supply system also includes a delivery branch, which includes a raw acid pipeline, a pure water pipeline and a distribution tank. The distribution tank inlet is connected to the raw acid pipeline and the pure water pipeline for mixing the raw acid and pure water delivered to the distribution tank to form a corrosive liquid. The distribution tank outlet is connected to a first detection branch and a second detection branch. The control module is used to control the flow of the raw acid pipeline and the pure water pipeline according to feedback from the detection instrument.

[0018] In one embodiment, the transport branch also includes an acid recovery pipeline, one end of which is connected to the preparation tank inlet or the original acid pipeline, and the other end of which is connected to the production line to receive the purified waste liquid; and / or, the transport branch also includes a pure water recovery pipeline, one end of which is connected to the preparation tank inlet or the pure water pipeline, and the other end of which is connected to the detection instrument to receive the purified detection waste liquid.

[0019] By setting up two detection branches, the production line is supplied with liquid respectively, and each branch is tested in real time using detection instruments, the detection frequency can be controllably increased, the authenticity of the detection can be improved, the safety risks that may be caused by manual sampling can be avoided, the health and safety of personnel can be guaranteed, and the workload of personnel can be reduced. The two detection branches are set in parallel, forming one for use and one for backup. When the corrosive liquid in one branch exceeds the preset range, the corrosive liquid stored in the other detection branch is activated to supply the production line, thereby ensuring the consistency of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a circulating liquid supply system in one embodiment of the present application.

[0021] Description of Figure Numbers:

[0022] Circulating liquid supply system 1; first detection branch 10; second detection branch 20; first storage tank 11; first branch 12; first control valve 13; second control valve 14; second storage tank 21; second branch 22; third control valve 23; fourth control valve 24; detection instrument 30; waste liquid storage tank 31; control module 40; production line 50; purification instrument 60; first purification instrument 61; second purification instrument 60; delivery branch 70; raw acid pipeline 73; pure water pipeline 72; distribution tank 71. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0029] See also Figure 1 , Figure 1 A schematic diagram of a circulating liquid supply system for automatically controlling the pH value of a corrosive liquid in an embodiment of the present application is shown. The circulating liquid supply system 1 provided in an embodiment of the present application includes a first detection branch 10, a second detection branch 20, a detection instrument 30 and a control module 40.

[0030] The first detection branch 10 includes a first storage tank 11 and a first branch 12 connected to the first storage tank 11, a portion of the etching liquid can enter the first storage tank 11, and the first storage tank 11 is connected to the production line 50 through the first branch 12. The second detection branch 20 includes a second storage tank 21 and a second branch 22 connected to the second storage tank 21, another portion of the etching liquid can enter the second storage tank 21, and the second storage tank 21 is connected to the production line 50 through the second branch 22. Preferably, the production line 50 is an etching foil production line.

[0031] The detection instrument 30 is connected to the first storage tank 11 to detect the first pH value of a portion of the corrosive liquid in the first storage tank 11. The detection instrument 30 is connected to the second storage tank 21 to detect the second pH value of another portion of the corrosive liquid in the second storage tank 21. The control module 40 is connected to the detection instrument 30, and is used to obtain the first pH value and the second pH value, and determine whether the first pH value and the second pH value are within a preset pH range. If they are within the preset pH range, the control module 40 controls the corresponding branch to provide the corrosive liquid to the production line 50.

[0032] By setting up two detection branches, the production line 50 is supplied with liquid respectively, and the detection instrument 30 is used to perform real-time detection on each branch respectively, so as to controllably increase the detection frequency, improve the detection authenticity, avoid the safety risks that may be caused by manual sampling, ensure the health and safety of personnel and reduce the workload of personnel. The two detection branches are set in parallel, forming one for use and one for backup. When the corrosive liquid in one branch exceeds the preset range, the corrosive liquid stored in the other detection branch is activated to supply liquid to the production line 50, thereby ensuring the consistency of product quality.

[0033] In one embodiment, the detection instrument 30 is an acid-base neutralization titration detection instrument 30. The control module 40 controls the first storage tank 11 or the second storage tank 21 to supply the acid-base neutralization titration detection instrument 30 sample at regular intervals, and the alkali barrel (for example, filled with KOH alkali solution) in the detection instrument 30 titrates the acid sample, and the obtained acid acidity data is synchronously transmitted to the control module 40 in real time, and the control module 40 can be set to store a preset pH range. The control module 40 compares the measured data with the preset range and controls the on and off of the first detection branch 10 or the second detection branch 20 based on this.

[0034] In one embodiment, the control module 40 is used to control one of the first detection branch 10 and the second detection branch 20 to be in a state of continuously supplying liquid to the production line 50. When the feedback from the detection instrument 30 indicates that the pH value of the branch currently supplying liquid exceeds a preset pH value range, the control module 40 controls the switch to the other of the first detection branch 10 and the second detection branch 20.

[0035] Specifically, in the initial working state when the circulating liquid supply system 1 is started, only one of the first detection branch 10 and the second detection branch 20 can be opened and continuously supply the corrosive liquid to the production line 50. The other of the first detection branch 10 and the second detection branch 20 is opened to receive the corrosive liquid and store it in the storage tank, and does not continuously supply the corrosive liquid to the production line 50. The stored corrosive liquid should be in accordance with the preset pH range. When the pH of a detection branch that continuously supplies liquid exceeds the preset range, the circulating liquid supply system 1 switches to a standby state, uses the corrosive liquid stored in another detection branch for liquid supply, and adjusts or repairs the other branch.

[0036] In one embodiment, the circulating liquid supply system 1 further includes a waste liquid storage tank 31 disposed at the outlet of the detection instrument 30, and the waste liquid storage tank 31 is used to store the detection waste liquid generated by the detection. For the acid-base neutralization titration detection instrument 30, after the detection, that is, after the acid-base neutralization titration, the inorganic salt liquid with neutral pH is recorded as the detection waste liquid.

[0037] The neutral detection waste liquid cannot flow back to the first storage tank 11 or the second storage tank 21. The cations of the detection waste liquid include K+ ions. Although the detection waste liquid is harmless to the environment, the cation concentration is high and needs to be purified for production on the production line 50. In one embodiment, the circulating liquid supply system 1 also includes a purification instrument, which is connected to the outlet of the waste liquid storage tank 31 and is used to purify the detection waste liquid. The purified detection waste liquid flows back to the first detection branch 10 and / or the second detection branch 20 through the pipeline and continues to be used by the system as pure water.

[0038] In one embodiment, the control module 40 is used to detect the liquid level in the waste liquid storage tank 31. When the liquid level reaches a preset liquid level value, the control module 40 controls the detection waste liquid to enter the purification instrument. Since the detection sampling of the detection instrument 30 is intermittent and small, the waste liquid storage tank 31 is set for storage to improve the working efficiency of the system. After a certain amount of storage, the corresponding purification process is carried out.

[0039] In one embodiment, the circulating liquid supply system 1 further includes a purification instrument 60, which is connected to the production line 50 and is used to purify the waste liquid generated by the production line 50; the purified waste liquid flows back to the first detection branch 10 and / or the second detection branch 20 through a pipeline. The waste acid generated by the production line 50 is recorded as waste liquid, and the recycled acid produced after purification can be used as a raw material for preparing the etching liquid and continued to be used by the system.

[0040] It can be understood that the purification instrument 60 for the detection waste liquid and the purification instrument 60 for the waste liquid are different types of purification instruments 60. The purification instrument 60 includes a first purification instrument 61 and a second purification instrument 60. The first purification instrument 61 is used to treat the detection waste liquid to generate pure water, and the second purification instrument 62 is used to treat the waste liquid to generate recovery acid.

[0041] In one embodiment, the circulating liquid supply system 1 also includes a valve system, which includes a first control valve 13 arranged at the entrance of the first detection branch 10, a second control valve 14 arranged at the first branch 12, a third control valve 23 arranged at the entrance of the second detection branch 20, and a fourth control valve 24 arranged at the second branch 22; the control module 40 is connected to the valve system.

[0042] Specifically, taking the first detection branch 10 normally open as an example, when the circulating liquid supply system 1 is started in the initial working state, the control module 40 controls the first control valve 13 and the second control valve 14 to be opened, and the corrosive liquid is continuously provided to the production line 50 via the first storage tank 11; at the same time, the third control valve 23 is opened and the fourth control valve 24 is closed, the second storage tank 21 receives the corrosive liquid, and the detection instrument 30 detects in real time to ensure that the corrosive liquid stored in the second storage tank 21 meets the preset pH range. When the detection instrument 30 detects that the pH of the first detection branch 10 exceeds the preset range, the control module 40 controls the second control valve 14 to be closed, the first control valve 13 can be opened to adjust the pH from the upstream, or it can be closed to repair the first detection branch 10, the control module 40 controls the fourth control valve 24 to be opened, the circulating liquid supply system 1 is switched to the standby state, and the corrosive liquid stored in the second detection branch 20 is used for liquid supply, and the third control valve 23 can also be opened to realize the rotation of the continuous liquid supply branch.

[0043] The valve system further includes a first waste liquid control valve and a second waste liquid control valve, wherein the first waste liquid control valve is disposed between the waste liquid storage tank 31 and the purification instrument 60, and the second waste liquid control valve is disposed between the production line 50 and the second purification instrument 62. The control module 40 can control the opening and closing of the first waste liquid control valve and the second waste liquid control valve as required, thereby controlling the purification efficiency of the system.

[0044] In one embodiment, the circulating liquid supply system 1 further includes a delivery branch 70, which includes a raw acid pipeline 73, a pure water pipeline 72 and a distribution tank 71. The inlet of the distribution tank 71 is connected to the raw acid pipeline 73 and the pure water pipeline 72, so as to mix the raw acid and pure water delivered to the distribution tank 71 to form a corrosive liquid. The outlet of the distribution tank 71 is connected to the first detection branch 10 and the second detection branch 20; the control module 40 is used to control the flow of the raw acid pipeline 73 and the pure water pipeline 72 according to the feedback of the detection instrument 30. The raw acid pipeline 73 and the pure water pipeline 72 can be provided with a control pump, which is connected to the control module 40, and the control module 40 controls the start, stop and opening of the control pump according to the pH value obtained in real time.

[0045] In one embodiment, the delivery branch 70 also includes an acid recovery pipeline, one end of which is connected to the inlet of the preparation tank 71 or the original acid pipeline 73, and the other end of which is connected to the production line 50 to receive the purified waste liquid; and / or, the delivery branch 70 also includes a pure water recovery pipeline, one end of which is connected to the inlet of the preparation tank 71 or the pure water pipeline 72, and the other end of which is connected to the detection instrument 30 to receive the purified detection waste liquid.

[0046] Specifically, from the dispensing tank 71 to the parallel first detection branch 10, the second detection branch 20, and then to the waste liquid storage tank 31 and the first purification instrument 61 back to the pure water pipeline 72 (dispensing tank 71), the first circulation loop of the circulating liquid supply system 1 is formed; from the dispensing tank 71 to the parallel first detection branch 10, the second detection branch 20, and then to the production line 50 and the second purification instrument 62 back to the original acid pipeline 73 (dispensing tank 71), the second circulation loop of the circulating liquid supply system 1 is formed. The main raw materials (original acid pipeline 73, pure water pipeline 72) and the recycled and purified circulating raw materials (purified detection waste liquid and waste liquid) are mixed together in the dispensing tank 71 to realize waste utilization, effectively reduce production costs, and avoid environmental pollution problems caused by sewage treatment or discharge, thereby achieving the purpose of green production.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A circulating liquid supply system for automatically controlling the pH value of a corrosive liquid, characterized in that: The circulating liquid supply system comprises: A first detection branch includes a first storage tank and a first branch connected to the first storage tank, a portion of the corrosive liquid can enter the first storage tank, and the first storage tank is connected to the production line through the first branch; A second detection branch includes a second storage tank and a second branch connected to the second storage tank, another part of the corrosive liquid can enter the second storage tank, and the second storage tank is connected to the production line through the second branch; a detection instrument connected to the first storage tank to detect a first pH value of a portion of the corrosive liquid in the first storage tank; connected to the second storage tank to detect a second pH value of another portion of the corrosive liquid in the second storage tank; and The control module is connected to the detection instrument and is used to obtain the first pH value and the second pH value, and determine whether the first pH value and the second pH value are within a preset pH range. If they are within the preset pH range, the corresponding branch is controlled to provide the corrosive liquid to the production line.

2. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 1, characterized in that: The detection instrument is an acid-base neutralization titration detection instrument.

3. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 2 is characterized in that: The circulating liquid supply system also includes a waste liquid storage tank disposed at the outlet of the detection instrument, and the waste liquid storage tank is used to store detection waste liquid generated by the detection.

4. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 3 is characterized in that: The circulating liquid supply system also includes a purification instrument, which is connected to the outlet of the waste liquid storage tank and is used to purify the detection waste liquid. The purified detection waste liquid flows back to the first detection branch and / or the second detection branch through a pipeline.

5. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 1 is characterized in that: The circulating liquid supply system also includes a purification instrument, which is connected to the production line and is used to purify the waste liquid generated by the production line; the purified waste liquid flows back to the first detection branch and / or the second detection branch through a pipeline.

6. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 4, characterized in that: The control module is used to detect the liquid level in the waste liquid storage tank, and when it is detected that the liquid level reaches a preset liquid level value, the control module controls the detected waste liquid to enter the purification instrument.

7. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 1, characterized in that: The control module is used to control one of the first detection branch and the second detection branch to be in a state of continuously supplying liquid to the production line. When the feedback from the detection instrument indicates that the pH value of the branch currently supplying liquid exceeds the preset pH value range, the control module controls switching to the other of the first detection branch and the second detection branch.

8. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 1 is characterized in that: The circulating liquid supply system also includes a valve system, which includes a first control valve arranged at the entrance of the first detection branch, a second control valve arranged at the first branch, a third control valve arranged at the entrance of the second detection branch, and a fourth control valve arranged at the second branch; the control module is connected to the valve system.

9. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 1, characterized in that: The circulating liquid supply system also includes a delivery branch, which includes a raw acid pipeline, a pure water pipeline and a distribution tank. The distribution tank inlet is connected to the raw acid pipeline and the pure water pipeline for mixing the raw acid and pure water delivered to the distribution tank to form a corrosive liquid. The distribution tank outlet is connected to a first detection branch and a second detection branch. The control module is used to control the flow of the raw acid pipeline and the pure water pipeline according to feedback from the detection instrument.

10. The circulating liquid supply system for automatically controlling the pH value of the corrosive liquid according to claim 9, characterized in that: The delivery branch also includes an acid recovery pipeline, one end of which is connected to the preparation tank inlet or the original acid pipeline, and the other end of which is connected to the production line to receive the purified waste liquid; and / or, the delivery branch also includes a pure water recovery pipeline, one end of which is connected to the preparation tank inlet or the pure water pipeline, and the other end of which is connected to the detection instrument to receive the purified detection waste liquid.

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