Coating liquid preparation system

Abstract

The utility model discloses a coating liquid preparation system. The technical problem that in the prior art, a coating liquid preparation system is insufficient in preparation capacity is solved. Comprising a preparation tank and a buffer tank which are respectively provided with a water inlet, a feeding port and a discharging port, and the buffer tank is further provided with a feeding port; the desalted water supply pipeline comprises a desalted water main pipeline and two desalted water supply branches, the input ends of the two desalted water supply branches are both communicated with the desalted water main pipeline, and the desalted water main pipeline is communicated with an external water source; the output ends of the two desalted water supply branches are respectively communicated with the water inlet of the preparation tank and the water inlet of the buffer tank; one end of the serial pipeline is communicated with the discharge port of the preparation tank, and the other end of the serial pipeline is communicated with the feed port of the buffer tank; one end of the output pipeline is communicated with the discharge port of the buffer tank, and the other end of the output pipeline is used for outputting coating liquid. The coating liquid preparation system provided by the utility model is high in preparation capacity and meets the fast-paced strip steel production requirement.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of coating liquid configuration, and particularly relates to a coating liquid configuration system. BACKGROUND

[0002] The coating section of the continuous annealing unit is used to coat the surface of the strip steel with coating liquid by a coating machine, so as to form an insulating coating on the surface of the strip steel. The coating liquid is of many types, mainly divided into two categories of chromium-containing coating liquid and environment-friendly coating liquid, and the physical and chemical properties of the two types of coating liquid are quite different. The chromium-containing coating liquid is mostly a weak acid liquid and has certain corrosiveness; the environment-friendly coating liquid contains resin raw materials and is a liquid with high viscosity, high solid content and high density.

[0003] In the related art, the coating liquid configuration system is usually configured in a configuration tank, and then sent to a buffer tank, and then sent to the coating machine for strip steel coating operation. As the production rhythm of the production line is getting faster, the coating liquid configuration system cannot meet the production under the condition of large demand. SUMMARY

[0004] To solve the technical problem of insufficient production capacity of the current coating liquid configuration system under the condition of large demand of the production line, the application provides a coating liquid configuration system.

[0005] In the first aspect of the application, a coating liquid configuration system is provided, comprising:

[0006] The configuration tank and the buffer tank are both provided with a water inlet, a feeding inlet and a discharge outlet, and the buffer tank is further provided with a feeding inlet;

[0007] The desalinated water supply pipeline comprises a desalinated water main pipeline and two desalinated water supply branches, the input ends of the two desalinated water supply branches are both communicated with the desalinated water main pipeline, the desalinated water main pipeline is communicated with an external water source, and the output ends of the two desalinated water supply branches are respectively communicated with the water inlet of the configuration tank and the water inlet of the buffer tank;

[0008] The series connection pipeline is connected at one end to the discharge outlet of the configuration tank and at the other end to the feeding inlet of the buffer tank;

[0009] The output pipeline is connected at one end to the discharge outlet of the buffer tank and at the other end to an output end of the coating liquid.

[0010] In some embodiments, the series connection pipeline and the output pipeline both comprise a driving section and a filter section connected in series, the driving section comprises two driving members connected in parallel, and the filter section comprises two filters connected in parallel.

[0011] In some embodiments, the filter section further comprises a bypass valve connected in parallel to the filter.

[0012] In some embodiments, the driving member is a diaphragm pump.

[0013] In some embodiments, two detection pipelines for detecting the density, viscosity and pH of the coating liquid are further included, one end of one of the detection pipelines is connected to the series pipeline and the top of the configuration tank, and the other end of the other detection pipeline is connected to the output pipeline and the top of the buffer tank.

[0014] In some embodiments, a first emptying pipeline, a second emptying pipeline, a first overflow pipeline and a second overflow pipeline are further included, two ends of the first emptying pipeline are connected to the input end of the series pipeline and a drain pit, two ends of the second emptying pipeline are connected to the input end of the output pipeline and the drain pit, two ends of the first overflow pipeline are connected to the overflow port of the configuration tank and the drain pit, and two ends of the second overflow pipeline are connected to the discharge port of the buffer tank and the drain pit.

[0015] In some embodiments, the desalinated water supply pipeline further includes four flushing branches, the four flushing branches are connected to the desalinated water main pipeline, and the output ends of the four flushing branches are connected to the series pipeline, the configuration tank, the buffer tank and the output pipeline respectively.

[0016] In some embodiments, the configuration tank and the buffer tank are both provided with stirring structures.

[0017] In some embodiments, the configuration tank is provided with a heater for heating the coating liquid in the configuration tank and a liquid level meter for detecting the liquid level of the coating liquid, the height of the liquid level meter is higher than that of the heater, and the liquid level meter and the heater are both electrically connected to a controller.

[0018] In some embodiments, a cooling water supply pipeline and a cooling water discharge pipeline are further included, the cooling water supply pipeline includes a cooling water supply main pipeline and two cooling water supply branches connected to the cooling water supply main pipeline, and the two cooling water supply branches are connected to the cooling water inlets of the configuration tank and the buffer tank respectively; the cooling water discharge pipeline includes a cooling water discharge main pipeline and two cooling water discharge branches connected to the cooling water discharge main pipeline, and the two cooling water discharge branches are connected to the cooling water outlets of the configuration tank and the buffer tank respectively.

[0019] According to the coating liquid configuration system provided by the embodiment of the application, in addition to the configuration tank being capable of configuring the coating liquid, the buffer tank is also provided with a water inlet and provides a water source through a desalted water supply pipeline, and solid and liquid medicaments are provided through a feeding port, so that the buffer tank can play a role of configuring the coating liquid in addition to the buffering function. In the case of a large demand for coating liquid in the production line, the configuration tank and the buffer tank can simultaneously prepare the coating liquid and supply the coating machine through an output pipeline, so as to meet the large demand for the coating liquid. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic diagram of the coating liquid configuration system in one or more embodiments of the application is shown.

[0021] Figure 2 The fluid circuit diagram of the coating liquid configuration system in the case of the buffer tank configuring the coating liquid is shown.

[0022] Figure 3 The fluid circuit diagram of the coating liquid configuration system in the case of flushing is shown.

[0023] BRIEF DESCRIPTION OF DRAWINGS:

[0024] 10a-configuration tank, 10b-buffer tank, 11-stirring structure, 12-heater, 13-liquid level meter;

[0025] 20a-cooling water supply pipeline, 201-cooling water supply main pipeline, 202-cooling water supply branch pipeline, 20b-cooling water discharge pipeline, 203-cooling water discharge main pipeline, 204-cooling water discharge branch pipeline;

[0026] 30-desalted water supply pipeline, 31-desalted water main pipeline, 32-desalted water supply branch pipeline, 33-flushing branch pipeline;

[0027] 40a-serial connection pipeline, 40b-output pipeline, 411-driving member, 412-pulse damper, 421-filter, 422-bypass valve, 430-pressure switch, 440-flow meter;

[0028] 50a-first detection pipeline, 50b-second detection pipeline, 51-density viscosimeter, 52-acid-base meter, 53-detection valve;

[0029] 60a-first emptying pipeline, 60b-second emptying pipeline, 61-emptying valve, 70a-first overflow pipeline, 70b-second overflow pipeline, 80-drain pit. DETAILED DESCRIPTION

[0030] In order to make the skilled in the art to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0031] The first aspect embodiment of the present application provides a coating liquid configuration system, the configuration tank and the buffer tank can be configured with coating liquid, meeting the production line use demand.

[0032] Please refer to Figure 1 The coating liquid configuration system of the present application comprises a configuration tank 10a, a buffer tank 10b, a desalted water supply pipeline 30, a series connection pipeline 40a and an output pipeline 40b.

[0033] Among them, the configuration tank 10a and the buffer tank 10b are both provided with a water inlet, a feeding port and a discharge port. The water inlet can be used for adding water, and the feeding port can be used for feeding solid and liquid medicaments for preparing coating liquid. The buffer tank 10b is further provided with a feeding port in communication with the series connection pipeline 40a, so that the coating liquid in the configuration tank 10a can be discharged into the buffer tank 10b to realize the buffering function and improve the stability of coating liquid supply.

[0034] The desalted water supply pipeline 30 comprises a desalted water main pipeline 31 and two desalted water supply branches 32. The input ends of the two desalted water supply branches 32 are both in communication with the desalted water main pipeline 31, and the desalted water main pipeline 31 is in communication with an external water source. The output ends of the two desalted water supply branches 32 are respectively in communication with the water inlet of the configuration tank 10a and the water inlet of the buffer tank 10b. Therefore, the external water source can enter the desalted water main pipeline 31 and provide desalted water for configuring coating liquid to the configuration tank 10a and the buffer tank 10b through the two desalted water supply branches 32 respectively. In specific implementation, a supply valve is arranged on the desalted water supply branch 32 to realize the opening and closing of the desalted water supply branch 32 to supply desalted water according to demand.

[0035] One end of the serial pipeline 40a is communicated with the discharge port of the preparation tank 10a, and the other end is communicated with the feed port of the buffer tank 10b, so as to realize the communication between the preparation tank 10a and the buffer tank 10b, and the coating liquid in the preparation tank 10a can be discharged into the buffer tank 10b, thereby improving the stability of the coating liquid supply. One end of the output pipeline 40b is communicated with the discharge port of the buffer tank 10b, and the other end is used for outputting the coating liquid, so that the coating liquid prepared by the buffer tank 10b and the coating liquid prepared by the preparation tank 10a can be sent to the coating machine. For the serial pipeline 40a and the output pipeline 40b, both are used for conveying the coating liquid, wherein the serial pipeline 40a is used for sending the coating liquid in the preparation tank 10a to the buffer tank 10b, and the output pipeline 40b is used for sending the coating liquid in the buffer tank 10b to the coating machine.

[0036] In addition to the preparation tank 10a itself preparing the coating liquid, the buffer tank 10b is also provided with a water inlet, and water is provided through the desalted water supply pipeline 30, and solid and liquid medicaments are provided through the feeding port, so that the buffer tank 10b can not only provide the buffering function, but also can prepare the coating liquid. In the case that the demand of the coating liquid in the production line is large, the preparation tank 10a and the buffer tank 10b can simultaneously prepare the coating liquid, and the coating liquid can be supplied to the coating machine through the output pipeline 40b, so as to meet the large demand of the coating liquid.

[0037] In order to reduce the impurity content in the coating liquid, in some embodiments, referring to Figure 1 , the serial pipeline 40a and the output pipeline 40b both include a driving section and a filtering section communicated with each other. The driving section is used for providing the power for the flow of the coating liquid, and the filtering section is used for filtering the coating liquid, so as to improve the quality of the coating liquid. In other embodiments, the filtering section can be arranged only in the output pipeline 40b, and the filtering section is not arranged in the serial pipeline 40a, and the impurity content of the coating liquid flowing to the coating machine can also be reduced.

[0038] In some embodiments, referring to Figure 1 , the driving section includes two driving members 411 connected in parallel, one standby and one in use, so as to improve the production efficiency. The filtering section includes two filters 421 connected in parallel, one standby and one in use, so as to improve the production efficiency. In other embodiments, only one driving member 411 can be arranged in the driving section, and the flow of the coating liquid can also be realized. Only one filter 421 can be arranged in the filtering section, and the filtering of the coating liquid can also be realized. The driving member 411 can be selected from a centrifugal pump or a diaphragm pump. In the case that the diaphragm pump is selected as the driving member 411, even if the viscosity of the coating liquid is large, the diaphragm pump is not easy to be blocked, and the maintenance frequency is reduced.

[0039] In some embodiments, in the case that the driving section includes two driving members 411 connected in parallel, referring to Figure 1 , a pulse damper 412 is arranged in the branch of each driving member 411, so as to stabilize the pressure and flow of the coating liquid, and ensure the continuity and stability of the liquid output by the diaphragm pump.

[0040] In some embodiments, referring to Figure 1 , the filter section further comprises a bypass valve 422 connected to the filter 421, which can be activated in case of failure of the filter 421, such as clogging, to ensure normal supply of coating liquid to the coater. In some embodiments, the output side and the input side of the filter section are each provided with a pressure switch 430, and the pressure switch 430 located at the input side is located at the output side of the driving section to detect whether the filter 421 is clogged, and in case of clogging, the bypass valve 422 can be opened to ensure normal supply of coating liquid to the coater.

[0041] In some embodiments, referring to Figure 1 , the output pipeline 40b is provided with a flow meter 440 located at the output end of the transition section to detect the flow of coating liquid provided to the coater.

[0042] In some embodiments, a stop valve is provided on each of the series pipeline 40a and the output pipeline 40b to realize the opening and closing of the respective pipelines, and the position and number of the stop valves can be arranged as needed, for example, the stop valve on the main line of the series pipeline 40a can be close to the buffer tank 10b, and the stop valve on the main line of the output pipeline 40b can be close to the coater; a stop valve is provided on each branch of the driving member 411 to realize the opening and closing of each branch, and a stop valve can also be provided on each branch of the filter member to realize the opening and closing of each branch. In some embodiments, a stop valve can also be provided at the input end and the output end of the driving member 411, and a stop valve can also be provided at the input end and the output end of the filter member.

[0043] In order to ensure that qualified coating liquid is provided to the coater, in some embodiments, referring to Figure 1, the coating liquid preparation system further comprises two detection pipelines for detecting the density, viscosity and pH value of the coating liquid, and a density and viscosity meter 51 and a pH meter 52 are arranged on the detection pipelines, and the two detection pipelines are respectively a first detection pipeline 50a and a second detection pipeline 50b, one of the detection pipelines, i.e. the first detection pipeline 50a, is communicated at two ends thereof with the series pipeline 40a and the top of the preparation tank 10a, so that the coating liquid in the series pipeline 40a flows back to the preparation tank 10a through the detection pipeline, and the density, viscosity and pH value of the coating liquid are detected during the flow of the coating liquid through the detection pipeline. The other detection pipeline, i.e. the second detection pipeline 50b, is communicated at two ends thereof with the output pipeline 40b and the top of the buffer tank 10b, so that the coating liquid in the output pipeline 40b flows back to the buffer tank 10b through the detection pipeline, and the density, viscosity and pH value of the coating liquid are detected during the flow of the coating liquid through the detection pipeline. The arrangement of the two detection pipelines realizes the detection of the density, viscosity and pH value of the coating liquid in the preparation tank 10a and the buffer tank 10b, and facilitates the adjustment of the water amount and the amount of the reagent according to the actual detected density, viscosity and pH value of the coating liquid and the target density, viscosity and pH value.

[0044] In the specific implementation, please refer to Figure 1 A detection valve 53 is arranged on the detection pipeline to control the opening and closing of the detection pipeline, so that the coating liquid flows through the detection pipeline. In the arrangement, the height of the input end of the detection pipeline is higher than that of the output end, so that no power element is arranged, and the flow of the coating liquid in the detection pipeline is realized by gravity, which has little influence on the normal flow of the coating liquid in the series pipeline 40a and the output pipeline 40b.

[0045] In some embodiments, the coating liquid preparation system further comprises a first emptying pipeline 60a, a second emptying pipeline 60b, a first overflow pipeline 70a and a second overflow pipeline 70b. The two ends of the first emptying pipeline 60a are communicated with the discharge port of the preparation tank 10a and a drain pit 80, so as to facilitate the emptying of the coating liquid and the cleaning water in the preparation tank 10a. The two ends of the second emptying pipeline 60b are communicated with the discharge port of the buffer tank 10b and the drain pit 80, so as to facilitate the emptying of the coating liquid and the cleaning water in the buffer tank 10b. The two ends of the first overflow pipeline 70a are communicated with the overflow port of the preparation tank 10a and the drain pit 80, so that the coating liquid or the cleaning water in the preparation tank 10a can be discharged along the first overflow pipeline 70a in the case of excessive amount. The two ends of the second overflow pipeline 70b are communicated with the discharge port of the buffer tank 10b and the drain pit 80, so that the coating liquid or the cleaning water in the buffer tank 10b can be discharged along the second overflow pipeline 70b in the case of excessive amount.

[0046] An emptying valve 61 is arranged on each of the first emptying pipeline 60a and the second emptying pipeline 60b to be opened in the case of emptying demand and closed in the case of no emptying demand.

[0047] In some embodiments, the desalinated water supply pipeline 30 further comprises four flushing branches 33 connected to the desalinated water main pipeline 31, and the output ends of the four flushing branches 33 are respectively connected to the series pipeline 40a, the configuration tank 10a, the buffer tank 10b and the output pipeline 40b, so as to flush the series pipeline 40a, the configuration tank 10a, the buffer tank 10b and the output pipeline 40b with desalinated water respectively, and the waste water after flushing can be discharged into the drain pit 80 through the first and second emptying pipelines 60a and 60b. In some embodiments, the series pipeline 40a and the output pipeline 40b gradually rise along the flow direction of the coating liquid, so that the flow of the coating liquid can be realized by means of the driving member 411, and in the flushing stage, the flushing water can flush the series pipeline 40a and the output pipeline 40b under the action of gravity without power. In other embodiments, the desalinated water source has relatively high pressure, which cooperates with gravity to provide flushing force to the pipeline. In some embodiments, the flushing branch 33 is provided with a flushing valve which is opened to be conducted when there is a flushing demand and is closed to be cut off after the flushing is completed. In some embodiments, the configuration tank 10a and the buffer tank 10b are provided with cleaning balls to clean the inside of the tanks in combination with the flushing water.

[0048] In some embodiments, referring to Figure 2 , the configuration tank 10a and the buffer tank 10b are both provided with stirring structures 11 to accelerate the mixing of water and medicaments and improve the preparation efficiency of the coating liquid. In some embodiments, referring to Figure 2 , the configuration tank 10a is provided with a heater 12 for heating the coating liquid in the configuration tank 10a and a liquid level meter 13 for detecting the liquid level of the coating liquid, the height of the liquid level meter 13 is higher than that of the heater 12, and the liquid level meter 13 and the heater 12 are both electrically connected to a controller, so that when the liquid level exceeds the liquid level meter 13, the liquid level meter 13 detects the liquid level, and at this time the controller controls the heater 12 to work, which can avoid dry burning damage of the heater 12. In other embodiments, the buffer tank 10b can be provided with a heater 12, but only the configuration tank 10a is provided with a heater 12, which can meet the use demand of the coating liquid and reduce the cost.

[0049] In some embodiments, referring to Figure 1The coating liquid preparation system further comprises a cooling water supply pipeline 20a and a cooling water discharge pipeline 20b. The cooling water supply pipeline 20a comprises a cooling water supply trunk 201 and two cooling water supply branches 202 connected to the cooling water supply trunk 201, and the two cooling water supply branches 202 are respectively connected to the cooling water inlets of the preparation tank 10a and the buffer tank 10b. The cooling water discharge pipeline 20b comprises a cooling water discharge trunk 203 and two cooling water discharge branches 204 connected to the cooling water discharge trunk 203, and the two cooling water discharge branches 204 are respectively connected to the cooling water outlets of the preparation tank 10a and the buffer tank 10b. Since the shelf life of the silicon steel coating liquid is very short, it can only be stored for a few days at 20-25°C, and the storage time is even shorter in high-temperature summer environment. The cooling water supply pipeline 20a and the cooling water discharge pipeline 20b can cool the coating liquid in the preparation tank 10a and the buffer tank 10b through cooling water, thereby prolonging the storage time of the coating liquid. A cold water control valve is arranged on each of the cooling water supply branch 202 and the cooling water discharge branch 204 to control the opening or closing of the respective pipeline. In some embodiments, a cold water flow meter 440 is arranged on the cooling water supply branch 202 to obtain the cooling water flow, so as to adjust the opening size of the cold water control valve and ensure the cooling effect.

[0050] The working process of the coating liquid preparation system provided in the present application is as follows:

[0051] When the demand of the strip steel production line is small, the coating machine is supplied in the mode of preparation in the preparation tank 10a and buffering in the buffer tank 10b. The desalting water enters the preparation tank 10a through the desalting water trunk 31 and the desalting water supply branch 32 connected to the preparation tank 10a. The liquid and solid medicaments are added into the preparation tank 10a through the feeding port, and the coating liquid is quickly formed through the stirring structure 11. The driving member 411 of the serial pipeline 40a is actuated to drive the coating liquid to flow through the filter 421 of the serial pipeline 40a for filtration, and then enter the buffer tank 10b. After the coating liquid in the preparation tank 10a is completely discharged into the buffer tank 10b, the above steps are repeated to prepare the next tank of coating liquid. The driving member 411 of the coating liquid crystal output pipeline 40b in the buffer tank 10b is actuated to supply the coating machine after secondary filtration through the filter 421, thereby forming a coating liquid preparation system with preparation and supply at the same time.

[0052] When the demand of the strip steel production line is large, the coating machine is supplied in the mode of preparation in the preparation tank 10a and buffering in the buffer tank 10b. Please refer to Figure 2, desalted water enters into the preparation tank 10a and the buffer tank 10b through the desalted water main line 31 and two desalted water supply branches 32 respectively, liquid and solid medicaments are added into the preparation tank 10a and the buffer tank 10b through corresponding charging ports respectively, and the coating liquid is formed in the preparation tank 10a and the buffer tank 10b through the stirring structure 11. The driving member 411 of the serial connection line 40a and the output line 40b is actuated, the coating liquid flows through the filter 421 of the serial connection line 40a, is filtered and enters into the buffer tank 10b, and the original coating liquid in the buffer tank 10b is sent to the coating machine through the filter 421 of the output line 40b. Since the buffer tank 10b receives the coating liquid from the preparation tank 10a and supplies the coating liquid to the coating machine at the same time, the capacity of the buffer tank 10b does not need to be additionally expanded, and the buffer tank 10b and the preparation tank 10a cooperate to meet the large coating liquid preparation demand.

[0053] In summer high-temperature weather, the cooling water supply line 20a is opened to supply cooling water into the cooling flow channels of the preparation tank 10a and the buffer tank 10b to cool the internal coating liquid and prolong the storage time of the coating liquid.

[0054] In winter low-temperature weather, the heater 12 is opened to heat the coating liquid to improve the coating quality of the coating liquid.

[0055] In the case of needing to replace the type of coating liquid, please refer to Figure 3 The flushing valve is opened, and desalted water flows through the desalted water main line 31 and four flushing branches 33 to flush the serial connection line 40a, the preparation tank 10a, the buffer tank 10b and the output line 40b respectively. The waste water of the serial connection line 40a is discharged into the drain pit 80 along the first emptying line 60a, the waste water in the preparation tank 10a is discharged into the drain pit 80 through the first emptying line 60a, the waste water in the buffer tank 10b is discharged into the drain pit 80 through the second emptying line 60b, and the waste water of the output line 40b enters into the second emptying line 60b in the direction opposite to the flow direction of the coating liquid and enters into the drain pit 80.

[0056] It should be noted that the connection of various lines is generally realized through pipelines, and the on-off of each line can be provided with a stop valve, and more contents will not be described here.

[0057] The liquid coating preparation system of the continuous annealing unit has the functions of solid feeding, liquid feeding, heating, cooling, filtering, stirring, density and viscosity detection, and pH value detection, can be differentially set according to the preparation requirements of different liquid coatings, can accurately control the preparation amount and temperature according to process requirements, has an online real-time detection function, and can complete the preparation, storage and conveying of low-viscosity chromium-containing liquid coatings and high-viscosity environment-friendly liquid coatings.

[0058] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0061] While the embodiments of the present application have been shown and described, it is to be understood that the embodiments can be varied, modified, substituted and changed by those skilled in the art without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents.

Claims

1. A coating liquid preparation system, characterized in that, include: Both the configuration tank and the buffer tank are equipped with a water inlet, a feeding port, and a discharge port. The buffer tank is also equipped with a feeding port. The demineralized water supply pipeline includes a demineralized water main line and two demineralized water supply branches. The input ends of the two demineralized water supply branches are connected to the demineralized water main line, which is connected to an external water source. The output ends of the two demineralized water supply branches are respectively connected to the inlet of the configuration tank and the inlet of the buffer tank. A series pipeline is connected at one end to the discharge port of the configuration tank and at the other end to the inlet of the buffer tank; The output pipeline is connected at one end to the discharge port of the buffer tank and at the other end to output the coating liquid.

2. The coating solution preparation system according to claim 1, characterized in that, Both the serial pipeline and the output pipeline include a connected drive section and a filter section. The drive section includes two parallel drive components, and the filter section includes two parallel filters.

3. The coating solution preparation system according to claim 2, characterized in that, The filter section also includes a bypass valve connected in parallel to the filter.

4. The coating solution preparation system according to claim 2, characterized in that, The driving component is a diaphragm pump.

5. The coating preparation system according to any one of claims 1-4, characterized in that, It also includes two detection lines for detecting the density, viscosity and pH of the coating liquid. One of the detection lines is connected at both ends to the serial pipeline and the top of the configuration tank, and the other detection line is connected at both ends to the output pipeline and the top of the buffer tank, respectively.

6. The coating preparation system according to any one of claims 1-4, characterized in that, It also includes a first venting pipe, a second venting pipe, a first overflow pipe, and a second overflow pipe. The two ends of the first venting pipe are connected to the input end of the serial pipe and the drain pit. The two ends of the second venting pipe are connected to the input end of the output pipe and the drain pit. The two ends of the first overflow pipe are connected to the overflow port of the configuration tank and the drain pit. The two ends of the second overflow pipe are connected to the discharge port of the buffer tank and the drain pit.

7. The coating preparation system according to any one of claims 1-4, characterized in that, The demineralized water supply pipeline also includes four flushing branches, which are connected in parallel to the demineralized water main line. The output ends of the four flushing branches are respectively connected to the series pipeline, the configuration tank, the buffer tank, and the output pipeline.

8. The coating preparation system according to any one of claims 1-4, characterized in that, Both the preparation tank and the buffer tank are equipped with a stirring structure.

9. The coating preparation system according to any one of claims 1-4, characterized in that, The preparation tank is equipped with a heater for heating the coating liquid inside the preparation tank and a level gauge for detecting the liquid level. The level gauge is higher than the heater, and both the level gauge and the heater are electrically connected to the controller.

10. The coating preparation system according to any one of claims 1-4, characterized in that, It also includes a cooling water supply pipeline and a cooling water discharge pipeline. The cooling water supply pipeline includes a cooling water supply main line and two cooling water supply branches connected in parallel to the cooling water supply main line. The two cooling water supply branches are respectively connected to the cooling water inlets of the configuration tank and the buffer tank. The cooling water discharge pipeline includes a cooling water discharge main line and two cooling water discharge branches connected in parallel to the cooling water discharge main line. The two cooling water discharge branches are respectively connected to the cooling water outlets of the configuration tank and the buffer tank.

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