Liquid preparation equipment and liquid preparation system

Abstract

The utility model provides liquid preparation equipment and a liquid preparation system, and relates to the field of liquid preparation equipment, in the liquid preparation equipment, a plurality of inlet ends of a first multi-channel switching valve are correspondingly communicated with a plurality of first stock solution tanks through corresponding first branch pipelines, and an outlet end of the first multi-channel switching valve is communicated with a liquid preparation container through a first liquid inlet main pipeline; the first multi-channel switching valve is used for controlling connection or disconnection of the corresponding first branch pipeline and the first liquid inlet pipeline, so that the corresponding first stock solution tank and the liquid preparation container are connected or disconnected; a plurality of inlet ends of the second multi-channel switching valve are correspondingly communicated with a plurality of second stock solution tanks through second branch pipelines, an outlet end of the second multi-channel switching valve is communicated with the solution preparation container through a second solution inlet main pipeline, and the second multi-channel switching valve is used for controlling the second branch pipelines and the second solution inlet pipelines to be connected or disconnected; and the corresponding second stock solution tank and the solution preparation container are connected or disconnected. Various solutions can be proportionally prepared, and the solution preparation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid preparation equipment technology, and in particular to a liquid preparation equipment and liquid preparation system. Background Technology

[0002] Solution preparation involves mixing various liquids or solids together in a certain proportion. Currently, most buffer solutions used in biological laboratories are prepared in-house, and most operations need to be done manually. This process is tedious, time-consuming, and difficult to ensure the consistency of the buffer solution, which can lead to poor experimental repeatability. This is a real pain point in the industry.

[0003] Currently, the market for small-scale laboratory solution preparation products mainly consists of benchtop magnetic stirring systems. These systems comprise three parts: a control system, a base with a magnetic drive motor and weighing module, and a support container. Multiple stirring bases can be connected, allowing multiple stirring units to operate simultaneously, thus improving efficiency. Power is transmitted through magnetic coupling, making them simple and easy to operate. However, these systems primarily function as automatic stirring devices, resulting in low automation and still requiring considerable manual labor for solution preparation.

[0004] The applicant has discovered that the prior art has at least the following technical problems: when multiple stock solutions are required to prepare a solution, multiple inlet and outlet pipelines are usually required, and each stock solution tank must be connected to the preparation container by at least one pipeline. Therefore, when different solutions are required to be prepared, different stock solution tanks need to be replaced and disassembled. The pipeline structure is complex, making it difficult to perform the preparation operation and reducing the preparation efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a solution preparation device and system to solve the technical problem of low solution preparation efficiency in existing technologies when different solutions need to be prepared. The preferred technical solutions provided by this invention offer numerous technical advantages, which are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a liquid preparation device, comprising a device body, a first multi-channel switching valve and a second multi-channel switching valve located on the device body, wherein:

[0008] The first multi-channel switching valve has multiple inlet ends connected to multiple first raw material tanks through corresponding first branch pipelines, and the first multi-channel switching valve has an outlet end connected to a liquid preparation container through a first liquid inlet main. The first multi-channel switching valve is used to control the connection or blockage between the corresponding first branch pipeline and the first liquid inlet pipeline, thereby connecting or blocking the corresponding first raw material tank and the liquid preparation container.

[0009] The multiple inlet ends of the second multi-channel switching valve are connected to the multiple second raw material tanks through the second branch pipelines, and the outlet end of the second multi-channel switching valve is connected to the liquid preparation container through the second liquid inlet main. The second multi-channel switching valve is used to control the connection or blockage between the corresponding second branch pipeline and the second liquid inlet pipeline, thereby connecting or blocking the corresponding second raw material tank and the liquid preparation container.

[0010] Preferably, the liquid preparation equipment further includes a weighing device, which has a magnetic stirring section and is used to support the liquid preparation container.

[0011] Preferably, the liquid preparation device further includes a third multi-channel switching valve located on the main body of the device, wherein:

[0012] The inlet of the third multi-channel switching valve is connected to one of the outlets of the first multi-channel switching valve via a main outlet pipeline. The outlet of the third multi-channel switching valve is connected to two or more storage containers via corresponding outlet branch pipelines. The first multi-channel switching valve is used to control the connection between the liquid dispensing container and the main outlet pipeline. The third multi-channel switching valve is used to control the connection or disconnection between the main outlet pipeline and the corresponding storage container.

[0013] Preferably, the main body of the equipment is further provided with a first inlet pump, a second inlet pump, and an outlet pump, wherein:

[0014] The first inlet pump is connected to the first inlet main line, the second inlet pump is connected to the second inlet main line, and the outlet pump is connected to the outlet main line.

[0015] Preferably, the main body of the device is provided with a filter connected to the main liquid outlet pipeline, the filter being used to filter particulate matter in the liquid.

[0016] Preferably, the main body of the device is equipped with a pressure gauge connected to the main liquid outlet pipeline, and the pressure gauge is used to monitor the pressure in the main liquid outlet pipeline.

[0017] Preferably, the main body of the device is equipped with a pH meter connected to the main outlet pipeline, and the pH meter is used to detect the pH value of the solution in the main outlet pipeline.

[0018] Preferably, the main body of the device is provided with a conductivity meter connected to the main outlet pipeline, and the conductivity meter is used to detect the conductivity value of the solution in the main outlet pipeline.

[0019] This utility model also provides a liquid preparation system, including a first stock solution tank, a second stock solution tank, a first branch pipeline, a first inlet pipeline, a second inlet pipeline, a liquid preparation container, and the aforementioned liquid preparation equipment, wherein:

[0020] There are multiple first raw material tanks and multiple second raw material tanks. All first branch pipelines can be connected to the first liquid inlet main pipeline, thereby forming the first liquid inlet pipeline.

[0021] All the second branch lines can be connected to the second liquid inlet main line, thereby forming the second liquid inlet line;

[0022] The inner diameter of the first liquid inlet pipe may be equal to or different from the inner diameter of the second liquid inlet pipe.

[0023] Compared with the prior art, the liquid preparation equipment and system provided by this utility model have the following advantages: the first multi-channel switching valve can control the opening or closing of the corresponding first raw liquid tank and liquid preparation container, and the second multi-channel switching valve can control the opening or closing of the corresponding second raw liquid tank and liquid preparation container; different raw liquids from the first and second raw liquid tanks can be selected to flow into the liquid preparation container, and multiple solutions can be prepared in proportion; users can use the first branch pipe, the first liquid inlet main pipe, the second branch pipe and the second liquid inlet main pipe to connect the corresponding components on the main body of the equipment, which simplifies the equipment structure, facilitates liquid preparation operation and improves liquid preparation efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a diagram of the overall piping structure of the liquid preparation system;

[0026] Figure 2 This is a structural schematic diagram of the first multi-channel switching valve;

[0027] Figure 3 This is a schematic diagram of the principle module of the solution preparation control method;

[0028] Figure 4 This is a schematic diagram of the overall structure of the liquid preparation equipment from one perspective.

[0029] Figure 5 A schematic diagram of the overall structure of the liquid preparation equipment from another perspective.

[0030] In the diagram: 100, storage container; 101, first raw material tank; 102, second raw material tank; 2, first inlet pipeline; 201, first branch pipeline; 202, first main inlet pipeline; 31, second branch pipeline; 32, second main inlet pipeline; 4, first inlet pump; 5, second inlet pump; 6, first multi-channel switching valve; 7, second multi-channel switching valve; 8, third multi-channel switching valve; 91, main outlet pipeline; 92, outlet branch pipeline; 10, dispensing container; 11, pressure gauge; 12, filter; 13, pH meter; 14, conductivity meter; 15, weighing device; 16, first three-way valve; 17, second three-way valve; 18, waste discharge pipeline. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] This utility model provides a liquid preparation system and liquid preparation control method, which can realize the proportional preparation of various solutions. For the liquid preparation container, there are only two liquid inlet pipes, which simplifies the internal pipe structure of the device, facilitates liquid preparation operation, and improves liquid preparation efficiency.

[0034] The following is combined with Figures 1-5 The technical solution provided by this utility model will be described in more detail.

[0035] Example 1:

[0036] like Figure 1 and Figure 2 , Figure 4 and Figure 5As shown, the present invention provides a liquid preparation system comprising a first raw liquid tank 101, a second raw liquid tank 102, a first inlet pipe 2, a second inlet pipe (the second inlet pipe includes a second branch pipe 31 and a second main inlet pipe 32), and a liquid preparation container 10. The inlet end of the first inlet pipe 2 is connected to two or more first raw liquid tanks 101, and a first multi-channel switching valve 6 is provided on the first inlet pipe 2 to control the connection or disconnection of the corresponding first raw liquid tank 101 and the liquid preparation container 10. The inlet end of the second inlet pipe is connected to two or more second raw liquid tanks 102, and a second multi-channel switching valve 7 is provided on the second inlet pipe to control the connection or disconnection of the corresponding second raw liquid tank 102 and the liquid preparation container 10. The inner diameters of the first inlet pipe 2 and the second inlet pipe are equal or unequal.

[0037] A first inlet pump 4 is installed on the first inlet pipe 2, and a second inlet pump 5 is installed on the second inlet pipe.

[0038] In this embodiment, the first multi-channel switching valve 6 can connect various stock solutions to the dispensing container 10. (See [reference]) Figure 1 As shown, Figure 1 The inlet end of the first liquid inlet pipe 2 is connected to two or more first raw material tanks 101. The raw materials in the first raw material tanks 101 are different; specifically, they can be the same component at different concentrations, or different components. The raw materials in the second raw material tank 102 are also different; specifically, they can be the same component at different concentrations, or different components.

[0039] The first multi-channel switching valve 6 and the second multi-channel switching valve 7 can be rotary switching valves as used in the prior art, or they can be combination switching valves, such as... Figure 1 In this example, the first multi-channel switching valve 6 is a rotary switching valve, and the second multi-channel switching valve 7 is a combination switch. Figure 1 As shown, when the raw liquid in the corresponding first raw liquid tank 101 is needed to be input into the liquid preparation container 10, the first multi-channel switching valve 6 rotates the inlet to connect with its outlet, thereby enabling the selection of the raw liquid.

[0040] As an alternative implementation, see [link to implementation details]. Figure 1 and Figure 2As shown, the first liquid inlet pipeline 2 includes a first branch pipeline 201 and a first liquid inlet main pipeline 202. The number of first branch pipelines 201 corresponds one-to-one with the number of first raw liquid tanks 101, and the inlet of the first branch pipeline 201 is connected to the corresponding first raw liquid tank 101. The inlet of the first multi-channel switching valve 6 is connected to the corresponding first branch pipeline 201, and the outlet of the first multi-channel switching valve 6 is connected to the first liquid inlet main pipeline 202. When one of the inlets of the first multi-channel switching valve 6 is connected to the outlet of the first multi-channel switching valve 6, the first liquid inlet main pipeline 202 is only connected to the corresponding first branch pipeline 201 and the first liquid inlet main pipeline 202.

[0041] The number and position of the first branch pipeline 201 correspond one-to-one with the first raw liquid tank 101. When the inlet of the first multi-channel switching valve 6 is switched to a different first branch pipeline 201, the unique first branch pipeline 201 is connected to the first liquid inlet main 202, so as to realize the connection between the corresponding first raw liquid tank 101 and the first liquid inlet main 202.

[0042] As an optional implementation, the second liquid inlet pipeline includes a second branch pipeline 31 and a second liquid inlet main pipeline 32, wherein: the number of second branch pipelines 31 corresponds one-to-one with the number of second raw liquid tanks 102, and the liquid inlet of the second branch pipeline 31 is connected to the corresponding second raw liquid tank 102; the inlet of the second multi-channel switching valve 7 is connected to the corresponding second branch pipeline 31; the outlet of the second multi-channel switching valve 7 is connected to the second liquid inlet main pipeline 32; when one of the inlets of the second multi-channel switching valve 7 is connected to the outlet of the second multi-channel switching valve 7, the second liquid inlet main pipeline 32 is only connected to the corresponding second branch pipeline 31 and the second liquid inlet main pipeline 32.

[0043] The number and position of the second branch pipe 31 correspond one-to-one with the second raw liquid tank 102. When the inlet of the second multi-channel switching valve 7 is switched to a different second branch pipe 31, the unique second branch pipe 31 is connected to the second liquid inlet main 32, so that the corresponding second raw liquid tank 102 is connected to the second liquid inlet main 32.

[0044] As an alternative implementation, see [link to implementation details]. Figure 1 As shown, the liquid preparation system in this embodiment also includes an outlet pipeline and a storage container 100. The inlet of the outlet pipeline is connected to the liquid preparation container 100. A third multi-channel switching valve 8 is installed on the outlet pipeline, and its outlet is connected to two or more storage containers 100. The third multi-channel switching valve 8 is used to control the connection or disconnection of the outlet pipeline and the corresponding storage container 100. An outlet pump is installed on the outlet pipeline.

[0045] In this embodiment, after the solution is prepared to the target ratio in the solution preparation container 10, the third multi-channel switching valve 8 controls the connection between the outlet pipeline and the corresponding storage container 100. The solution in the solution preparation container 10 is then transported to the storage container for storage via the outlet pipeline. There are two or more storage containers, allowing for the storage of different solutions and providing convenience.

[0046] As an alternative implementation, see [link to implementation details]. Figure 1 As shown, the inlet of the liquid outlet pipeline is connected to the outlet of the first multi-channel switching valve 6. The first multi-channel switching valve 6 can connect the first liquid inlet pipeline 2 with the liquid outlet pipeline, so that the solution in the liquid preparation container 10 flows into the corresponding liquid storage container 100 in sequence through the first liquid inlet pipeline 2 and the liquid outlet pipeline.

[0047] When the prepared solution needs to be transported, the inlet and outlet of the first multi-channel switching valve 6 are connected to the first inlet pipe 2 (first inlet main 202) and the outlet pipe, respectively. The prepared solution in the dispensing container 10 flows into the corresponding storage container 100 sequentially through the first inlet pipe 2 and the outlet pipe. When the prepared solution needs to be transported, the first inlet pipe 2, which originally transported the original solution in the first raw material tank 101, is now used to transport the prepared solution, simplifying the pipeline structure. Even when the dispensing container 10 needs to transport the prepared solution, only the first inlet main 202 and the second inlet main 32 are connected to it, making operation convenient.

[0048] As an alternative implementation, see [link to implementation details]. Figure 1 As shown, the liquid outlet pipeline includes a main liquid outlet pipeline 91 and a branch liquid outlet pipeline 92. The inlet of the third multi-channel switching valve 8 is connected to the main liquid outlet pipeline 91. The number of branch liquid outlet pipelines 92 corresponds one-to-one with the number of storage containers 100, and the outlet of the third multi-channel switching valve 8 is connected to the corresponding storage container 100. The main liquid outlet pipeline 91 is connected to the liquid dispensing container 10. When one of the outlets of the third multi-channel switching valve 8 is connected to the storage container 100, the main liquid outlet pipeline 91 is only connected to the corresponding storage container 100.

[0049] The number and position of the liquid outlet branch pipes 92 and the liquid storage container 100 are set to correspond one-to-one. When the inlet of the third multi-channel switching valve 8 is switched to different liquid outlet branch pipes 92, the unique liquid outlet main pipe 91 is connected to the liquid outlet branch pipes 92, so as to realize the connection between the corresponding liquid dispensing container 10 and the liquid storage container 100.

[0050] A pH meter 13 is installed on the solution preparation container 10 or the outlet pipeline to detect the pH value of the solution in the solution preparation container 10; a conductivity meter 14 is installed on the solution preparation container 10 or the outlet pipeline to detect the conductivity value of the solution in the solution preparation container 10. A filter 12 and a pressure gauge 11 are connected to the outlet pipeline, wherein: the filter 12 is used to filter particulate matter in the liquid, and the inlet of the bypass waste discharge branch is connected to the outlet of the filter 12; the pressure gauge 11 is used to monitor the pressure in the outlet pipeline to prevent excessive pressure caused by filter blockage, which could lead to pipeline rupture.

[0051] Example 2

[0052] See Figure 4 and Figure 5 As shown, this embodiment provides a liquid preparation device. The liquid preparation device of this embodiment includes a device body, a first multi-channel switching valve 6 and a second multi-channel switching valve 7 located on the device body. The first multi-channel switching valve 6 has multiple inlet ends connected to multiple first raw liquid tanks through corresponding first branch pipes 201, and the outlet end of the first multi-channel switching valve 6 is connected to a liquid preparation container through a first liquid inlet main 202. The first multi-channel switching valve 6 is used to control the connection or blockage between the corresponding first branch pipe 201 and the first liquid inlet pipe, thereby connecting or blocking the corresponding first raw liquid tank 101 and the liquid preparation container 10. The second multi-channel switching valve 7 has multiple inlet ends connected to multiple second raw liquid tanks 102 through second branch pipes 31, and the outlet end of the second multi-channel switching valve 7 is connected to the liquid preparation container through a second liquid inlet main 32. The second multi-channel switching valve 7 is used to control the connection or blockage between the corresponding second branch pipe 31 and the second liquid inlet pipe, thereby connecting or blocking the corresponding second raw liquid tank and the liquid preparation container.

[0053] In this embodiment, the user can connect the corresponding components on the main body of the equipment using the first branch pipe 201, the first liquid inlet main pipe 202, the second branch pipe 31, and the second liquid inlet main pipe 32, which simplifies the equipment structure, facilitates liquid preparation operation, and improves liquid preparation efficiency.

[0054] Based on the above embodiments, the first branch pipeline 201, the first liquid inlet main pipeline 202, the second branch pipeline 31 and the second liquid inlet main pipeline 32, the first raw liquid tank 101, the liquid mixing container 10, the second liquid inlet main pipeline 32, the liquid storage container 100, the liquid outlet main pipeline 91, and the liquid outlet branch pipeline 92 are all provided by the user. This embodiment only provides equipment that is equipped with the above-mentioned first multi-channel switching valve 6, second multi-channel switching valve 7, third multi-channel switching valve 8, corresponding pump body and pressure gauge, filter, pH meter, conductivity meter, and weighing device on the main body of the equipment.

[0055] Example 3

[0056] See Figures 1-3As shown, this embodiment provides a solution mixing control method using the above-mentioned solution mixing system. The control method includes: during solution mixing: connecting the first multi-channel switching valve 6 to the corresponding first raw material tank 101 and the solution mixing container 10, the raw material in the first raw material tank 101 enters the solution mixing container 10 through the first inlet pipe 2; connecting the second multi-channel switching valve 7 to the corresponding second raw material tank 102 and the solution mixing container 10, the raw material in the second raw material tank 102 enters the solution mixing container 10 through the second inlet pipe, the raw material in the first raw material tank 101 and the raw material in the second raw material tank 102 are mixed in proportion in the solution mixing container 10; when the inner diameters of the first inlet pipe 2 and the second inlet pipe are not equal, the raw material with a larger demand in the solution mixing container 10 flows through the one with the larger inner diameter of the first inlet pipe 2 and the second inlet pipe.

[0057] The solution mixing control method of this embodiment controls the first multi-channel switching valve 6 and the second multi-channel switching valve 7. Different raw solutions are pumped to the solution mixing container 10 through branch pipelines via the first multi-channel switching valve 6 and the second multi-channel switching valve 7 for mixing. When the first multi-channel switching valve 6 and the second multi-channel switching valve 7 are electrically connected to the controller, the solution mixing process does not require manual intervention, has a high degree of automation, saves labor, and can also ensure the accuracy of each mixing ratio and high repeatability.

[0058] Different quantities of different stock solutions are needed during the solution preparation process. In order to ensure the efficiency of solution preparation and the accuracy of the ratio, the different stock solutions need to be divided into large and small quantities according to the usage. The stock solution with a large usage is transported by a pipeline with a larger inner diameter for higher efficiency, while the stock solution with a small usage is transported by a pipeline with a smaller inner diameter to accurately control the usage. In this way, the first liquid inlet pipeline 2 and the second liquid inlet pipeline are used to transport the stock solution with a large usage and a small usage respectively, which improves the accuracy of the ratio while ensuring the efficiency of solution preparation.

[0059] As an alternative implementation, see [link to implementation details]. Figure 1 As shown, the liquid preparation system of this embodiment also includes a weighing device 15, which has a magnetic stirring part, and the liquid preparation container 10 is located on the weighing device 15. The weighing device 15 is used to monitor the weight of the liquid in the liquid preparation container 10, and the amount of raw liquid delivered to the first raw liquid tank 101 or the second raw liquid tank 102 is controlled by the change in the weight of the liquid in the liquid preparation container 10, thereby accurately controlling the solution ratio.

[0060] A weighing device 15 with a magnetic stirring section is used to weigh and stir liquids in a mixing tank. The weighing device 15 can monitor the weight of the liquid in the mixing tank in real time, and control the amount of raw liquid delivered by controlling the weight change, thereby achieving precise control of the solution ratio. The weighing device 15 with a magnetic stirring section is an instrument that integrates a weighing module and magnetic stirring, and belongs to the prior art. Reference can be made to Chinese Utility Model Patent CN219830083U.

[0061] As an optional implementation, the control method of this embodiment further includes: when dispensing liquid: controlling the second inlet pipe to block the liquid preparation container 10; connecting the first multi-channel switching valve 6 to the first inlet pipe 2 and the outlet pipe, and controlling the third multi-channel switching valve 8 to connect the outlet pipe and the corresponding storage container 100, so that the solution in the liquid preparation container 10 flows into the corresponding storage container 100 in sequence through the first inlet pipe 2 and the outlet pipe.

[0062] The third multi-channel switching valve 8 is installed on the outlet pipeline to control the connection or disconnection of multiple liquid storage containers 100 with the liquid mixing container 10, so as to deliver solutions with different ratios to the corresponding liquid storage tanks. When the third multi-channel switching valve 8 is electrically connected to the controller, the solution delivery process does not require manual intervention, has a high degree of automation, saves labor, and can also ensure the accuracy of each mixing ratio and high repeatability.

[0063] As an alternative implementation, see [link to implementation details]. Figure 1 As shown, the liquid preparation system also includes a waste discharge pipeline 18, a first three-way valve 16 is installed on the first liquid inlet pipeline 2, and a second three-way valve 17 is installed on the second liquid inlet pipeline. The control method further includes: before replacing with a new stock solution: controlling the outlet of the first three-way valve 16 to connect with the waste discharge pipeline 18 to drain the residual previous stock solution in the first liquid inlet pipeline 2; and / or, controlling the outlet of the second three-way valve 17 to connect with the waste discharge pipeline 18 to drain the residual previous stock solution in the second liquid inlet pipeline; after draining the previous stock solution: controlling the outlet of the first three-way valve 16 to connect with the liquid preparation container 10 to connect the first liquid inlet pipeline 2 to the liquid preparation container 10; controlling the outlet of the second three-way valve 17 to connect with the liquid preparation container 10 to connect the second liquid inlet pipeline to the liquid preparation container 10.

[0064] Since multiple raw material tanks share the first inlet pipe 2 or the second inlet pipe, when one raw material is delivered, it is necessary to switch to another raw material for delivery. However, the first inlet pipe 2 or the second inlet pipe still contains the previous raw material. When the new raw material is delivered, the remaining previous raw material in the inlet pipe will be delivered to the dispensing container 10 together, which leads to a decrease in the final dispensing accuracy. After installing a first three-way valve 16 and a second three-way valve 17 on the two first liquid inlet pipes 2 and 2 respectively, when switching to a new stock solution, the first three-way valve 16 and the second three-way valve 17 are connected to the waste discharge pipe 18. The new stock solution pushes out the remaining previous stock solution in the first liquid inlet pipes 2 and 2 and discharges the waste. After the previous stock solution is discharged, the first three-way valve 16 and the second three-way valve 17 are switched to connect to the mixing container 10, and the new stock solution is delivered to the mixing container 10. In this way, it can be ensured that each stock solution can be delivered to the mixing container 10 in an accurate amount for mixing, making the mixing more precise.

[0065] When the first three-way valve 16 and the second three-way valve 17 are electrically connected to the controller, the waste discharge process does not require manual intervention, has a high degree of automation, saves manpower, and can also ensure the accuracy of each mixing ratio and high repeatability.

[0066] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A solution preparation device, characterized in that, Includes the main body of the equipment, a first multi-channel switching valve located on the main body of the equipment, and a second multi-channel switching valve, wherein: The first multi-channel switching valve has multiple inlet ends connected to multiple first raw material tanks through corresponding first branch pipelines, and the first multi-channel switching valve has an outlet end connected to a liquid preparation container through a first liquid inlet main. The first multi-channel switching valve is used to control the connection or blockage between the corresponding first branch pipeline and the first liquid inlet pipeline, thereby connecting or blocking the corresponding first raw material tank and the liquid preparation container. The second multi-channel switching valve has multiple inlet ends connected to multiple second raw material tanks via second branch pipelines, and the outlet end of the second multi-channel switching valve is connected to the liquid preparation container via a second liquid inlet main. The second multi-channel switching valve is used to control the connection or blockage between the corresponding second branch pipeline and the second liquid inlet pipeline, thereby connecting or blocking the corresponding second raw material tank and the liquid preparation container.

2. The solution preparation equipment according to claim 1, characterized in that, The liquid preparation equipment also includes a weighing device, which has a magnetic stirring part and is used to support the liquid preparation container.

3. The solution preparation equipment according to claim 1, characterized in that, The solution preparation device also includes a third multi-channel switching valve located on the main body of the device, wherein: The inlet of the third multi-channel switching valve is connected to one of the outlets of the first multi-channel switching valve via a main outlet pipeline. The outlet of the third multi-channel switching valve is connected to two or more storage containers via corresponding outlet branch pipelines. The first multi-channel switching valve is used to control the connection between the liquid dispensing container and the main outlet pipeline. The third multi-channel switching valve is used to control the connection or disconnection between the main outlet pipeline and the corresponding storage container.

4. The solution preparation equipment according to claim 3, characterized in that, The main body of the equipment is also equipped with a first inlet pump, a second inlet pump, and an outlet pump, wherein: The first inlet pump is connected to the first inlet main line, the second inlet pump is connected to the second inlet main line, and the outlet pump is connected to the outlet main line.

5. The solution preparation equipment according to claim 3, characterized in that, The main body of the device is equipped with a filter that is connected to the main liquid outlet pipeline. The filter is used to filter particulate matter in the liquid.

6. The liquid preparation equipment according to claim 3, characterized in that, The main body of the device is equipped with a pressure gauge that is connected to the main liquid outlet pipeline. The pressure gauge is used to monitor the pressure in the main liquid outlet pipeline.

7. The solution preparation equipment according to claim 3, characterized in that, The main body of the device is equipped with a pH meter that is connected to the main outlet pipeline. The pH meter is used to detect the pH value of the solution in the main outlet pipeline.

8. The liquid preparation equipment according to claim 3, characterized in that, The main body of the device is equipped with a conductivity meter connected to the main outlet pipeline, which is used to detect the conductivity value of the solution in the main outlet pipeline.

9. A solution preparation system, characterized in that, The system includes a first raw material tank, a second raw material tank, a first branch pipeline, a first inlet pipeline, a second inlet pipeline, a dispensing container, and the dispensing equipment according to any one of claims 1-8, wherein: There are multiple first raw material tanks and multiple second raw material tanks. All first branch pipelines can be connected to the first liquid inlet main pipeline, thereby forming the first liquid inlet pipeline. All the second branch lines can be connected to the second liquid inlet main line, thereby forming the second liquid inlet line; The inner diameter of the first liquid inlet pipe may be equal to or different from the inner diameter of the second liquid inlet pipe.

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