Automatic cleaning and interference eliminating system and method for chemical titration flow cell

Abstract

The invention discloses an automatic cleaning and interference elimination system and method for a chemical titration flow cell, a magnetic stirrer is arranged in the flow cell, a light sensation detection module and a light sensation light supplement module are arranged on the side surface of the flow cell, the light sensation detection module is opposite to the light sensation light supplement module, and the light sensation light supplement module is opposite to the magnetic stirrer. A flow cell stirring motor is arranged at the bottom of the flow cell, a flow cell inlet in the bottom of the flow cell is communicated with a flow cell inlet pipeline, a quartz and pure water pipeline is communicated with the flow cell inlet pipeline through a first electromagnetic valve, and a micro booster pump is communicated with the flow cell inlet pipeline through a pure water pipeline and a second electromagnetic valve. And the detection water sample pipeline is communicated with the flow cell inlet pipeline through a third electromagnetic valve. The system and the method can realize automatic cleaning of the flow cell and elimination of interference.

Description

Technical Field

[0001] The present invention belongs to the technical field of automatic cleaning, and relates to a system and method for automatic cleaning and interference elimination of a chemical titration flow cell. Background Art

[0002] Chemical titration analysis is one of the commonly used analysis methods in laboratories and industries. It measures the content of a certain component in a sample by adding a standard solution drop by drop to the sample. During the titration process, the sample and the titration reagent react in the flow cell, and the color of the solution in the flow cell changes after the reaction. The light-sensing component captures the color change to find the titration end point, thereby determining the titration result.

[0003] However, the long-term use of titration instruments will cause more dirt to adhere to the inner wall of the flow cell. These dirt will affect the light-sensing component's capture of color changes, thereby affecting the accuracy of the titration result. In addition, the light-sensing component may also have cumulative errors after long-term use and needs to be calibrated regularly to ensure its accuracy.

[0004] Currently, most laboratories and industries still adopt the method of manually cleaning the flow cell and calibrating the light-sensing component. This method is not only inefficient but also prone to introducing human errors. Therefore, it is particularly important to develop a device that can automatically clean the flow cell and calibrate the light-sensing component. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art, and provides a system and method for automatic cleaning and interference elimination of a chemical titration flow cell, which can realize the automatic cleaning of the flow cell and the elimination of interference.

[0006] To achieve the above object, the present invention discloses a system for automatic cleaning and interference elimination of a chemical titration flow cell, including a flow cell, a flow cell inlet pipeline, a quartz + pure water pipeline, a micro booster pump, and a detection water sample pipeline;

[0007] A magnetic stirrer is arranged in the flow cell. A light-sensing detection module and a light-sensing supplementary light module are arranged on the side surface of the flow cell. Among them, the light-sensing detection module faces the light-sensing supplementary light module. A flow cell stirring motor is arranged at the bottom of the flow cell. The flow cell inlet at the bottom of the flow cell is communicated with the flow cell inlet pipeline. The quartz + pure water pipeline is connected to the flow cell inlet pipeline through a first electromagnetic valve. The micro booster pump is connected to the flow cell inlet pipeline through a pure water pipeline and a second electromagnetic valve. The detection water sample pipeline is connected to the flow cell inlet pipeline through a third electromagnetic valve.

[0008] A drug dropping inlet is arranged at the top of the flow cell.

[0009] It also includes a controller, which is connected to the light sensing detection module, the light sensing fill light module, the first solenoid valve, the second solenoid valve, the third solenoid valve, the micro booster pump and the circulation pool stirring motor.

[0010] The flow cell outlet on the top side of the flow cell 1 is connected to the flow cell outlet pipeline.

[0011] The invention discloses an automatic cleaning and interference elimination method for a chemical titration circulation pool, comprising automatic flushing and white balance calibration of the circulation pool.

[0012] The automatic flushing process of the circulation pool is:

[0013] 1) Then open the first solenoid valve, flush the quartz + pure water mixture into the circulation pool, and close the first solenoid valve after it is full;

[0014] 2) Turn on the stirring motor of the circulation pool to drive the magnetic stirring bar to rotate, and the quartz + pure water mixture in the circulation pool rotates and impacts the inner wall of the circulation pool to wash away the attachments on the inner wall of the circulation pool;

[0015] 3) Open the second solenoid valve, start the micro booster pump, flush pure water into the circulation pool, control the magnetic stirrer to rotate continuously, and flush foreign matter and quartz out through the circulation pool outlet and the circulation pool outlet pipe 8 through the pure water;

[0016] 4) Turn off the micro booster pump, close the second solenoid valve, stop the magnetic stirrer, and the circulation pool cleaning process is completed.

[0017] In step 1), the mass ratio of water to quartz particles is 3:1.

[0018] The white balance calibration process of the flow cell is:

[0019] The third solenoid valve is opened, and the test water sample flows into the circulation pool through the test water sample pipeline, and then the third solenoid valve is closed;

[0020] Turn on the light detection module and the light fill light module, test the original color of the water sample, and calibrate the detection value at this time to (255,255,255), and then perform cyclic titration and light RGB testing.

[0021] A drug drop inlet is provided on the top of the circulation pool;

[0022] The flow cell outlet on the top side of the flow cell is connected to the flow cell outlet pipeline.

[0023] It also includes a controller, which is connected to the light sensing detection module, the light sensing fill light module, the first solenoid valve, the second solenoid valve, the third solenoid valve, the micro booster pump and the circulation pool stirring motor.

[0024] The present invention has the following beneficial effects:

[0025] The automatic cleaning and interference elimination system and method of the chemical titration flow cell described in the present invention adopts a cleaning method of pure water + quartz cleaning particles, combined with a stirring device and appropriate flushing pressure, which can effectively remove the attachments on the inner wall of the flow cell, ensure the cleanliness of the flow cell, thereby reducing the titration error caused by dirt interference, and improving the accuracy and reliability of the analysis results. In addition, when receiving a detection task, the light sensor will perform water sample primary color calibration and white balance calibration, and calibrate the RGB value to (255, 255, 255), effectively eliminating the cumulative error in the light sensing process, ensuring that the light sensor can maintain the best working state during each detection, and further improving the accuracy and stability of the titration analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural diagram of the present invention.

[0028] Among them, 1 is a circulation pool, 2 is a light sensing detection module, 3 is a light sensing fill light module, 4 is a drug drop inlet, 5 is a magnetic stirrer, 6 is a circulation pool outlet, 7 is a circulation pool inlet, 8 is a circulation pool outlet pipeline, 9 is a circulation pool inlet pipeline, 10 is a quartz + pure water pipeline, 11 is a pure water pipeline, 12 is a detection water sample pipeline, 13 is a first solenoid valve, 14 is a second solenoid valve, 15 is a third solenoid valve, 16 is a micro booster pump, and 17 is a circulation pool stirring motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms “include” and “comprises” indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0032] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present invention generally represents an "or" relationship between the preceding and following related objects.

[0033] It should be understood that although terms such as first, second, third, etc. may be used in the embodiments of the present invention to describe preset ranges, etc., these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0034] Depending on the context, the word "if" as used herein can be interpreted as "when" or "while" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detected (stated condition or event)" can be interpreted as "when determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)".

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] Various structural schematic diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art can additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] Embodiment 1

[0038] Reference Figure 1 , the automatic cleaning and interference elimination system for the chemical titration flow cell according to the present invention includes a flow cell 1, a light sensor detection module 2, a light sensor light supplementing module 3, a drug dropping inlet 4, a magnetic stirrer 5, a flow cell outlet 6, a flow cell inlet 7, a flow cell outlet pipeline 8, a flow cell inlet pipeline 9, a quartz + pure water pipeline 10, a pure water pipeline 11, a detected water sample pipeline 12, a first solenoid valve 13, a second solenoid valve 14, a third solenoid valve 15, a micro booster pump 16, and a flow cell stirring motor 17;

[0039] A magnetic stirrer 5 is arranged inside the flow cell 1, a drug dropping inlet 4 is arranged at the top of the flow cell 1, the flow cell outlet 6 on the side surface at the top of the flow cell 1 is communicated with the flow cell outlet pipeline 8, a light sensor detection module 2 and a light sensor light supplementing module 3 are arranged on the side surface of the flow cell 1, wherein the light sensor detection module 2 faces the light sensor light supplementing module 3, a flow cell stirring motor 17 is arranged at the bottom of the flow cell 1, the flow cell inlet 7 at the bottom of the flow cell 1 is communicated with the flow cell inlet pipeline 9, the quartz + pure water pipeline 10 is connected to the flow cell inlet pipeline 9 through the first solenoid valve 13, the micro booster pump 16 is connected to the flow cell inlet pipeline 9 through the pure water pipeline 11 and the second solenoid valve 14, and the detected water sample pipeline 12 is connected to the flow cell inlet pipeline 9 through the third solenoid valve 15.

[0040] Embodiment 2

[0041] The automatic cleaning and interference elimination method for the chemical titration flow cell according to the present invention includes the following steps:

[0042] 1) It involves two parts: automatic flushing of the flow cell 1 and white balance calibration. The period of the automatic flushing of the flow cell 1 is set by the program, usually once a month, and is realized through steps 2) to 5). The white balance calibration is performed first every time a detection task is received. When the instrument detection frequency is set to 6 times a day, the white balance calibration is performed before each of the 6 detections on the same day.

[0043] 2) The automatic flushing program of the circulation pool 1 is running, and the front end of the quartz + pure water pipeline 10 is connected to the quartz + pure water container. Stirring begins in the container to mix the quartz and pure water evenly, and then the first solenoid valve 13 is opened to flush the quartz + pure water mixture into the circulation pool 1. After it is full, the first solenoid valve 13 is closed, wherein the mass ratio of water to quartz particles is 3:1.

[0044] 3) Turn on the circulation pool stirring motor 17 to drive the magnetic stirring bar 5 to rotate, and the quartz + pure water mixture in the circulation pool 1 rotates and impacts the inner wall of the circulation pool 1 to wash away the attachments on the inner wall of the circulation pool 1. This process lasts for 1 minute.

[0045] 4) Open the second solenoid valve 14, start the micro booster pump 16, flush pure water into the circulation pool 1, control the magnetic stirrer 5 to rotate continuously, and flush foreign matter and quartz through the circulation pool outlet 6 and the circulation pool outlet pipe 8 with pure water. The flushing process lasts for 1 minute.

[0046] 5) Turn off the micro booster pump 16, close the second electromagnetic valve 14, stop the magnetic stirrer 5, and the cleaning process of the circulation pool 1 is completed.

[0047] 6) In order to further eliminate the cumulative error from the sensor level, before each inspection task starts, the light sensing detection module 2 and the light sensing fill light module 3 are controlled to perform sensor white balance calibration, which is specifically achieved through steps 7) to 8).

[0048] 7) When receiving the detection task instruction, the third solenoid valve 15 is opened, and the detection water sample flows into the circulation pool 1 through the detection water sample pipeline 12. This process lasts for 1 minute to allow the water sample to be completely flushed in, and then the third solenoid valve 15 is closed.

[0049] 8) Turn on the light sensing detection module 2 and the light sensing fill light module 3, test the original color of the water sample, and calibrate the detection value at this time to (255, 255, 255), and then perform cyclic titration and light sensing RGB test.

[0050] The present invention controls the automatic flushing cycle and the white balance calibration of the photosensitive element through a built-in program, thereby realizing automatic cleaning of the circulation pool 1 and automatic calibration of the photosensitive sensor, which not only greatly reduces manual intervention, but also improves the working efficiency of the titration analysis. The automated process ensures the timeliness and accuracy of cleaning and calibration, making the titration analysis more efficient and reliable. Specifically, the present invention has the following characteristics:

[0051] a) The cleaning effect is significant and the analysis accuracy is guaranteed: the cleaning method of pure water + quartz cleaning particles, combined with a stirring device and appropriate flushing pressure, can effectively remove the attachments on the inner wall of the circulation pool 1, including stubborn dirt and residues. This deep cleaning can ensure the cleanliness of the circulation pool 1, thereby reducing the titration error caused by dirt interference and improving the accuracy and reliability of the analysis results.

[0052] b) Flexible and adaptable: The automatic flushing cycle of the present invention can be adjusted internally according to actual conditions to adapt to different usage environments and needs. In addition, the ratio of pure water + quartz cleaning particles can also be adjusted as needed to achieve the best cleaning effect. This flexibility enables the present invention to be widely used in various chemical titration analysis scenarios to meet the needs of different users.

[0053] c) White balance calibration to eliminate cumulative errors: Each time a detection task is received, the light sensor will perform water sample primary color calibration and white balance calibration, and calibrate the RGB value to (255, 255, 255). This step effectively eliminates the cumulative error in the light sensing process, ensuring that the light sensor can maintain the best working state during each detection, further improving the accuracy and stability of the titration analysis.

[0054] d) Easy maintenance and reduced operating costs: The automatic cleaning and calibration functions of the present invention reduce the frequency and difficulty of manual maintenance and reduce operating costs. At the same time, since the cleaning and calibration process is more accurate and efficient, repeated testing and material waste caused by errors are also reduced. This enables the present invention to bring greater economic benefits to users in long-term use.

[0055] Embodiment 3

[0056] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the automatic cleaning and interference elimination method of the chemical titration circulation pool are implemented. The memory may include a memory, such as a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk memory, etc. The processor, the network interface, and the memory are interconnected through an internal bus. The internal bus may be an industrial standard architecture bus, a peripheral component interconnection standard bus, an extended industrial standard architecture bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory is used to store programs. Specifically, the program may include a program code, and the program code includes computer operation instructions. The memory may include a memory and a non-volatile memory, and provide instructions and data to the processor.

[0057] Embodiment 4

[0058] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the steps of the automatic cleaning and interference elimination method for the chemical titration flow cell. Specifically, the computer-readable storage medium includes, but is not limited to, for example, volatile memory and / or non-volatile memory. The volatile memory may include random access memory (RAM) and / or cache memory, etc. The non-volatile memory may include read-only memory (ROM), hard disk, flash memory, optical disc, magnetic disk, etc.

[0059] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer-usable program code.

[0060] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one or more flows and / or Figure 1 blocks.

[0061] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in Figure 1 one or more flows and / or Figure 1 blocks.

[0062] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide for implementing the functions specified in Figure 1 one or more flows and / or Figure 1Steps of functions specified in one or more boxes.

[0063] Those skilled in the art will readily conceive of other embodiments of the present invention upon considering the specification and the disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include known common general knowledge or conventional technical means in the technical field not disclosed in the present invention. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0064] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

[0065] The above are only the preferred embodiments of the present invention, and do not impose any limitation on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A chemical titration flow cell automatic cleaning and interference elimination system, characterized in that: It comprises a circulation pool (1), a circulation pool inlet pipeline (9), a quartz+pure water pipeline (10), a micro booster pump (16) and a detection water sample pipeline (12); A magnetic stirring bar (5) is arranged in the circulation pool (1), and a light sensing detection module (2) and a light sensing fill light module (3) are arranged on the side of the circulation pool (1), wherein the light sensing detection module (2) is directly opposite to the light sensing fill light module (3), and a circulation pool stirring motor (17) is arranged at the bottom of the circulation pool (1), and a circulation pool inlet (7) at the bottom of the circulation pool (1) is connected to a circulation pool inlet pipeline (9), a quartz+pure water pipeline (10) is connected to the circulation pool inlet pipeline (9) via a first electromagnetic valve (13), a micro booster pump (16) is connected to the circulation pool inlet pipeline (9) via a pure water pipeline (11) and a second electromagnetic valve (14), and a detection water sample pipeline (12) is connected to the circulation pool inlet pipeline (9) via a third electromagnetic valve (15).

2. The automatic cleaning and interference elimination system for chemical titration flow cell according to claim 1, characterized in that: A drug dropping inlet (4) is arranged on the top of the circulation pool (1).

3. The automatic cleaning and interference elimination system for chemical titration flow cell according to claim 1, characterized in that: It also includes a controller, which is connected to the light sensing detection module (2), the light sensing fill light module (3), the first solenoid valve (13), the second solenoid valve (14), the third solenoid valve (15), a micro booster pump (16) and a circulation pool stirring motor (17).

4. The automatic cleaning and interference elimination system for chemical titration flow cell according to claim 1, characterized in that: The circulation cell outlet (6) on the top side of the circulation cell (1) is connected to the circulation cell outlet pipeline (8).

5. A method for automatic cleaning and interference elimination of a chemical titration flow cell, characterized in that: The automatic cleaning and interference elimination system for a chemical titration circulation pool according to claim 1 comprises automatic flushing and white balance calibration of the circulation pool (1).

6. The method for automatic cleaning and interference elimination of a chemical titration flow cell according to claim 5, characterized in that: The automatic flushing process of the circulation pool (1) is as follows: 1) Then, the first electromagnetic valve (13) is opened to flush the quartz + pure water mixture into the circulation pool (1), and the first electromagnetic valve (13) is closed after the circulation pool is full; 2) Turning on the circulation pool stirring motor (17) to drive the magnetic stirring bar (5) to rotate, the quartz + pure water mixture in the circulation pool (1) rotates and impacts the inner wall of the circulation pool (1), and washes away the attachments on the inner wall of the circulation pool (1); 3) opening the second electromagnetic valve (14), starting the micro booster pump (16), flushing pure water into the circulation pool (1), controlling the magnetic stirrer (5) to rotate continuously, and flushing foreign matter and quartz out through the circulation pool outlet (6) and the circulation pool outlet pipeline (8) with the pure water; 4) Turn off the micro booster pump (16), close the second electromagnetic valve (14), stop the magnetic stirrer (5), and the cleaning process of the circulation pool (1) is completed.

7. The method for automatic cleaning and interference elimination of a chemical titration flow cell according to claim 6, characterized in that: In step 1), the mass ratio of water to quartz particles is 3:

1.

8. The method for automatic cleaning and interference elimination of a chemical titration flow cell according to claim 5, characterized in that: The white balance calibration process of the flow cell (1) is as follows: The third electromagnetic valve (15) is opened, and the test water sample flows into the circulation pool (1) through the test water sample pipeline (12), and then the third electromagnetic valve (15) is closed; The light sensing detection module (2) and the light sensing fill light module (3) are turned on to test the original color of the water sample, and the detection value at this time is calibrated to (255, 255, 255), followed by cyclic titration and light sensing RGB testing.

9. The method for automatic cleaning and interference elimination of a chemical titration flow cell according to claim 5, characterized in that: A drug drop inlet (4) is provided on the top of the circulation pool (1); The circulation cell outlet (6) on the top side of the circulation cell (1) is connected to the circulation cell outlet pipeline (8).

10. The method for automatic cleaning and interference elimination of a chemical titration flow cell according to claim 5, characterized in that: It also includes a controller, which is connected to the light sensing detection module (2), the light sensing fill light module (3), the first solenoid valve (13), the second solenoid valve (14), the third solenoid valve (15), a micro booster pump (16) and a circulation pool stirring motor (17).

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