Teaching test bed for analytical chemistry

Abstract

The invention discloses a teaching test bed for analytical chemistry in the technical field of chemical experiment equipment, which comprises a main test bed and an auxiliary test bed, a driving unit is arranged between the main test bed and the auxiliary test bed, and the driving unit is electrically connected with a controller; an adjusting assembly is arranged on one side of the main test bed; a plurality of image collectors are arranged at the top of the main test bed; the top of the main test bench is provided with a cleaning assembly. And the controller is used for analyzing the personal information of the experimenter and the step information of the experimenter during the experiment based on the image information acquired by the image collector, and judging whether the current operation step of the experimenter is accurate or not based on the preset experiment standard step information. By analyzing the image information acquired by the image collector, not only can the correctness of the operation steps of an experimenter be judged and the experimenter be reminded of correct test steps or methods according to the test process, but also the set height can be adjusted according to the height of the experimenter, and the test bed can be automatically cleaned after the test is finished.

Description

Technical Field

[0001] The invention relates to the technical field of chemical experimental equipment, in particular to a teaching test bench for analytical chemistry. Background Art

[0002] As an important branch of chemistry, analytical chemistry mainly studies the composition, structure, properties and change patterns of substances. With the continuous advancement of science and technology, the methods and means of analytical chemistry are also constantly updated and developed. In the field of teaching, in order to better impart the knowledge and skills of analytical chemistry, students usually conduct analytical chemistry experiments on their own on the test bench (laboratory table) under the supervision of teachers.

[0003] The existing teaching test benches for analytical chemistry are generally composed of a table and some drawers for storing instruments or reagents. At the same time, some teaching test benches are also equipped with a sink to facilitate the cleaning process after the experiment. However, the existing teaching test benches for analytical chemistry also have some disadvantages:

[0004] Low flexibility: This means that during use, the test bench may not be able to meet the height requirements of people of different heights or different experimental needs, causing inconvenience to the experimenter.

[0005] Low convenience: The design of existing teaching test benches may not fully consider the portability of tools and chemical raw materials, making it difficult for experimenters to move or carry these items, affecting the efficiency and convenience of the experiment.

[0006] Inconvenient cleaning: The test bench lacks automatic or convenient cleaning functions, which makes the cleaning of teaching tools after the experiment cumbersome and inefficient, which is not conducive to the rapid and continuous conduct of the experiment and the hygiene of the tools.

[0007] Therefore, the present invention proposes a teaching test bench for analytical chemistry to solve the above problems. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a teaching test bench for analytical chemistry. By analyzing the image information obtained by the image collector and judging the correctness of the experimenter's operating steps according to the experiment progress, the experimenter is reminded of the correct experiment steps or methods. At the same time, the height is adjusted according to the height of the experimenter, and the test bench is cleaned up automatically after the experiment.

[0009] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a teaching test bench for analytical chemistry, comprising a main test bench and a sub-test bench, the main test bench and the sub-test bench are hinged and a driving unit for rotating the sub-test bench around the main test bench is arranged at the hinge, and the driving unit is electrically connected to a controller located at the top of the main test bench; an adjustment component for adjusting the relative height between the experimenter and the main test bench is arranged on one side of the main test bench, and the adjustment component is electrically connected to the controller; a water tank is arranged on the side of the main test bench away from the sub-test bench; a plurality of image collectors electrically connected to the controller are arranged on the top of the main test bench; a cleaning component for cleaning the main test bench and electrically connected to the controller is installed on the top of the main test bench; a plurality of moving wheels are arranged at the bottom of the sub-test bench, a plurality of protective covers are arranged at the top of the sub-test bench, and storage racks are arranged inside the protective covers, the bottom of the storage racks passes through the protective covers and extends to the inside of the sub-test bench and is coaxially fixedly connected to a driving motor located inside the sub-test bench, and the driving motor is electrically connected to the controller;

[0010] The controller is used to analyze the experimenter's personal information and the step information when doing the experiment based on the image information obtained by the image collector, and judge whether the experimenter's current operation steps are correct based on the preset experimental standard step information; when it is judged that the experimenter's operation is wrong, a prompt signal is sent to remind the experimenter, and the correct test step information is informed to the experimenter; when it is judged that the experimenter's operation is correct, the operator is directly prompted to continue the subsequent test operation.

[0011] Principle of basic scheme: This teaching test bench for analytical chemistry connects the main test bench and the auxiliary test bench by hinged connection, and is equipped with a drive unit to realize the rotation function of the auxiliary test bench, and adjusts the range enclosed by the main and auxiliary test benches to suit multi-person and single-person test operations. An adjustment component is set on one side of the main test bench, and the height of the main test bench can be adjusted according to the height or operation requirements of the experimenter to adapt to the usage habits of different experimenters. At the same time, the main test bench is equipped with multiple image collectors to capture the experimenter's operation process and experimental status in real time.

[0012] On the auxiliary test bench, multiple cylindrical protective covers are set up, with storage racks inside for storing reagents or instruments required for the experiment. The bottom of the storage rack is connected to the drive motor, and the storage rack can be rotated through the instructions of the controller, which is convenient for the experimenter to quickly find and take the required reagents or instruments. In addition, a cleaning component is installed on the main test bench to clean the test bench after the experiment to keep the test environment clean.

[0013] As the core component of the entire test bench, the controller can intelligently analyze the experimenter's personal information and test steps based on the image information obtained by the image collector. By comparing with the preset standard experimental steps, the controller can determine whether the experimenter's operating steps are correct and give corresponding prompts or guidance.

[0014] The above scheme has the following beneficial effects:

[0015] 1. This solution, through the intelligent analysis function of the controller, can provide real-time feedback on whether the experimenter's operating steps are correct, so as to correct errors in time, improve the accuracy and success rate of the experiment, and enhance the teaching effect. At the same time, the controller can also provide personalized guidance suggestions based on the experimenter's operation situation to help the experimenter better master the experimental skills and methods.

[0016] 2. In this solution, the setting of the protective cover effectively prevents the accidental drop of reagents or instruments during the experiment, reducing the experimental risk. At the same time, the real-time monitoring and analysis of the experimental steps by the controller can also timely discover and prevent potential safety hazards.

[0017] 3. In this solution, the setting of the adjustment components and the drive motor allows the experimenter to adjust the height of the test bench and the rotation angle of the storage rack according to personal needs, so that reagents and instruments can be taken more conveniently. In addition, the rotation function of the auxiliary test bench also increases the flexibility of the experiment, allowing the experimenter to arrange the experimental layout more freely.

[0018] Furthermore, the adjustment component includes an electrically controlled lifting platform arranged on one side of the main test bench, and the electrically controlled lifting platform is electrically connected to the controller.

[0019] Beneficial effects: Since the electric lifting platform is electrically connected to the controller, the controller can automatically adjust the height of the test bench according to the experimenter's personal information (such as height) or experimental requirements to achieve personalized height settings. In addition, the controller can also dynamically adjust the height of the test bench according to the experimental steps or the experimenter's operation to optimize the experimental process.

[0020] Furthermore, the cleaning assembly includes a movable slide groove arranged on the top of the main test bench, and a movable rack is arranged in the movable slide groove; the movable slide groove is slidably matched with a movable frame, and a movable motor is arranged inside the movable frame, and the output shaft of the movable motor is coaxially fixedly connected with a movable gear meshing with the movable rack;

[0021] A first cleaning block and a second cleaning block are installed at the bottom of the moving frame, a first cleaning layer is bonded to the bottom of the first cleaning block, and a second cleaning layer is bonded to the bottom of the second cleaning block, both of the first cleaning layer and the second cleaning layer are in contact with the surface of the main test bench, a storage cavity for storing cleaning liquid is arranged inside the second cleaning block, the storage cavity is connected with a delivery pump, and the output end of the delivery pump is connected with a plurality of drainage pipes, and the other ends of the drainage pipes are all located between the second cleaning block and the second cleaning layer; a plurality of fans are arranged at the bottom of the moving frame and the fans are all located between the first cleaning block and the second cleaning block; the water tank is located within the movement track of the moving frame.

[0022] Beneficial effect: The mobile motor drives the mobile gear to mesh with the mobile rack, so as to realize the automatic sliding of the mobile frame in the mobile slide slot, thereby driving the first cleaning block and the second cleaning block to perform cleaning work on the main test bench, which not only improves the cleaning efficiency but also reduces the labor intensity of the experimenter.

[0023] The design of the first cleaning block and the second cleaning block realizes double cleaning of the test bench. The first cleaning layer is usually made of wear-resistant and easy-to-clean materials to remove solid residues on the test bench; while the second cleaning layer is used with the cleaning liquid in the storage cavity, which is evenly sprayed on the second cleaning layer through the drainage pipe. The second cleaning layer cleans the test bench to remove oil stains, chemical residues and other difficult-to-remove stains, ensuring thorough cleaning of the test bench.

[0024] The fan arranged at the bottom of the mobile rack can generate airflow during the cleaning process, accelerate the evaporation of water on the surface of the test bench, the first cleaning layer and the second cleaning layer, thereby shortening the drying time after cleaning, which not only improves the utilization rate of the test bench to facilitate the normal teaching, but also reduces the problems such as bacterial growth caused by long-term wetting. The water tank is located within the movement track of the mobile rack, which is convenient for collecting the cleaning liquid sprayed by the second cleaning block and the residual water on the test bench, which not only keeps the test bench clean, but also avoids the pollution of the cleaning liquid to the test environment.

[0025] Furthermore, a placement rack for placing test reagents or test instruments is installed on the top of the mobile rack.

[0026] Beneficial effects: The free space at the top of the mobile rack is used to place the reagents or instruments that may be used during the experiment, so as to avoid the disorder on the main test bench and improve the neatness and space utilization of the test bench. At the same time, the design of the placement rack also reduces the potential safety hazards caused by the random placement of test reagents and instruments on the test bench, such as reagents spilling and instruments slipping, so as to improve the safety of the experimental process. In addition, while cleaning the test bench, the experimenter can conveniently take or put back the test reagents and instruments from the placement rack without frequently moving or bending over, which reduces the inconvenience and physical exertion during the operation and improves the experimental efficiency.

[0027] Furthermore, the water tank is connected to a plurality of waste liquid recovery boxes, and electromagnetic valves are provided at the connection points between the water tank and the waste liquid recovery boxes, and the electromagnetic valves are electrically connected to the controller.

[0028] Beneficial effects: By setting up multiple waste liquid recovery boxes, different types of waste liquids can be classified and recovered, such as organic waste liquid, inorganic waste liquid, acid and alkali waste liquid, etc., which is conducive to the subsequent treatment and resource utilization of waste liquids and reduces the risk of pollution to the experimental environment. The solenoid valve is electrically connected to the controller to realize the automatic control of waste liquid discharge. According to the test type and waste liquid type, the controller can intelligently judge and control the opening and closing of the corresponding solenoid valve to ensure that the waste liquid is accurately discharged into the corresponding recovery box, which improves the accuracy and efficiency of waste liquid treatment.

[0029] Furthermore, the controller is also used to obtain the height information of the experimenter based on the image information obtained by the image collector, and adjust the lifting height of the electric-controlled lifting platform.

[0030] Beneficial effect: The controller can accurately obtain the height information of the experimenter through image recognition technology, and automatically adjust the height of the electric-controlled lifting platform accordingly, so that the height of the test platform matches the height of the experimenter. This not only improves the comfort of the experiment, but also reduces the physical discomfort caused by long-term bending or raising the head.

[0031] Furthermore, the controller is also used to control the mobile frame to move above the water tank after the experiment is finished and the experimental teaching is completed.

[0032] Beneficial effects: The controller can intelligently determine the end time of the test and automatically control the mobile rack to move above the sink. In this way, after completing the test or teaching, the experimenter can immediately find the sink near the mobile rack to conveniently clean and organize the experimental equipment, optimize the cleaning process, and improve the cleaning efficiency. In addition, during the movement of the mobile rack, it will also drive the first cleaning layer and the second cleaning layer to move, clean the surface of the main test bench, and absorb the experimental liquid on its surface. Reduce the possibility that the experimenter needs to move the experimental equipment one by one to the sink for cleaning, and improve the convenience of the cleaning process.

[0033] Furthermore, the controller is also used to control the solenoid valve corresponding to the test item to open when the test is completed and the analysis tool is cleaned up based on the preset test item data.

[0034] Beneficial effects: The controller can intelligently determine the type of waste liquid that may be generated during the test according to the preset test project data, and control the corresponding solenoid valve to open after the test, so that the waste liquid can be accurately discharged into the corresponding waste liquid recovery box, ensuring the accuracy and efficiency of waste liquid treatment and reducing the risk of environmental pollution.

[0035] The controller automatically controls the opening and closing of the solenoid valve, realizing the automation process of waste liquid treatment. The experimenter does not need to manually operate the waste liquid discharge, but only needs to follow the test steps, and the controller can automatically complete the waste liquid treatment work, so as to simplify the operation steps and improve the convenience and efficiency of the experiment.

[0036] Furthermore, the controller is also used to analyze the liquid level information of the reagent before and after use in a certain step based on the image information obtained by the image acquisition device, obtain the dosage of the reagent, and compare and analyze it with the preset dosage. When the difference between the dosage of the reagent and the preset dosage does not fall within the preset allowable error range, an error signal is issued to remind the experimenter and inform him of the correct dosage value.

[0037] Beneficial effects: The controller obtains the liquid level information of the reagent bottle in real time through the image acquisition device, and accurately calculates the dosage of the reagent, which helps to ensure the accuracy and reliability of the test results and avoid test failures or errors caused by inaccurate reagent dosage. When the difference between the reagent dosage and the preset dosage exceeds the allowable error range, the controller will immediately send an error signal to remind the experimenter to pay attention. At the same time, the controller will also inform the experimenter of the correct dosage value to help the experimenter adjust the operation in time to ensure the smooth progress of the experiment. It helps to cultivate the experimenter's rigorous and meticulous experimental attitude, so that they develop a good habit of conducting experiments in accordance with standard operating specifications, and helps to improve the experimenter's professional quality and experimental skills, and improve the teaching effect.

[0038] Furthermore, the controller is also used to identify the reagents or instruments selected by the experimenter on the auxiliary test bench through the image acquisition device, and judge whether the selected reagents or instruments are correct based on the current test steps; if it is judged to be wrong, a prompt signal is issued and the correct reagent or instrument information is displayed to guide the experimenter to replace it.

[0039] Beneficial effects: The controller recognizes the reagents or instruments selected by the experimenter on the auxiliary test bench in real time and immediately determines whether they are correct. When an error is found, the controller will immediately send a prompt signal and display the correct reagent or instrument information to help the experimenter quickly find and correct the error and ensure the accuracy and smooth progress of the experiment. Through the real-time recognition and judgment of the controller, the experimental errors caused by the wrong selection of reagents or instruments can be effectively reduced, which helps to improve the accuracy and reliability of the test results.

[0040] Moreover, in teaching experiments, the controller can be used as an intelligent teaching auxiliary tool to help teachers understand students' learning situation and operation level in real time. Through real-time guidance and correction of students' operation process, teachers can provide teaching guidance more effectively and improve teaching effect.

[0041] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1It is an axonometric diagram of an embodiment of a teaching test bench for analytical chemistry according to the present invention;

[0043] Figure 2 It is an overall front view of an embodiment of a teaching test bench for analytical chemistry of the present invention;

[0044] Figure 3 A front cross-sectional view of a cleaning assembly of an embodiment of a teaching test bench for analytical chemistry according to the present invention;

[0045] Figure 4 The present invention is a logical flow diagram of an embodiment of a teaching test bench for analytical chemistry.

[0046] The figure marks in the drawings of the specification include: 1. main test bench; 2. water tank; 3. image acquisition device; 4. mobile slide; 5. placement rack; 6. controller; 7. protective cover; 8. storage rack; 9. auxiliary test bench; 10. mobile rack; 11. electric lifting platform; 12. moving wheel; 13. first cleaning block; 14. first cleaning layer; 15. fan; 16. second cleaning block; 17. second cleaning layer; 18. delivery pump. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The following is further described in detail through specific implementation methods:

[0051] Embodiment 1:

[0052] As attached Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a teaching test bench for analytical chemistry includes a main test bench 1 and an auxiliary test bench 9. At the same time, due to the danger of analytical chemistry experiments, the surfaces of the main test bench 1 and the auxiliary test bench 9 are lined with a protective layer of phenolic resin or epoxy resin or the like that is corrosion-resistant, high-temperature-resistant and chemically stable, so as to reduce the possibility of certain corrosive reagents spilling onto the table surface and causing irreversible damage to the main test bench 1 and the auxiliary test bench 9. The main test bench 1 is hinged to the auxiliary test bench 9, and a driving unit for rotating the auxiliary test bench 9 around the main test bench 1 is provided at the hinge, and the driving unit is electrically connected to a controller 6 located at the top of the main test bench 1; an adjusting component for adjusting the relative height between the experimenter and the main test bench 1 is provided on one side of the main test bench 1, and the adjusting component is electrically connected to the controller 6. The main test bench 1 is provided with a water tank 2 on the side away from the auxiliary test bench 9; the main test bench 1 is provided with a plurality of image collectors 3 electrically connected to the controller 6 on the top; a cleaning assembly for cleaning the main test bench 1 and electrically connected to the controller 6 is installed on the top of the main test bench 1; a plurality of moving wheels 12 are provided at the bottom of the auxiliary test bench 9, and a plurality of protective covers 7 are provided on the top of the auxiliary test bench 9. At the same time, in order to facilitate observation, the protective covers 7 can be made of transparent glass, and storage racks 8 are provided inside the protective covers 7, and classification labels or names of chemical reagents or instruments can be pasted on the storage racks 8. The bottom of the storage racks 8 extends through the protective covers 7 to the inside of the auxiliary test bench 9 and is coaxially fixedly connected to a drive motor located inside the auxiliary test bench 9, and the drive motor is electrically connected to the controller 6;

[0053] The controller 6 is used to analyze the experimenter's personal information and the step information when doing the experiment based on the image information obtained by the image acquisition device 3, and judge whether the experimenter's current operation steps are correct based on the preset experimental standard step information; when it is judged that the experimenter's operation is wrong, a prompt signal is sent to remind the experimenter, and the correct experimental step information is informed to the experimenter; when it is judged that the experimenter's operation is correct, the operator is directly prompted to continue the subsequent experimental operation.

[0054] The adjustment component includes an electric lift 11 disposed on one side of the main test bench 1, and the electric lift 11 is electrically connected to the controller 6. The controller 6 is also used to obtain the height information of the experimenter based on the image information obtained by the image collector 3, and adjust the lifting height of the electric lift 11.

[0055] For example, the experimenter stands on the electric lift 11 in front of the main test bench 1, ready to start the experiment, the image collector 3 (such as a camera) starts to capture the experimenter's full-body image, the controller 6 uses image recognition technology to recognize that the experimenter's height is 1.75 meters, and determines the height to which the electric lift 11 should be adjusted (such as 0.1 meters, to accommodate the comfortable operating height of most people), the controller 6 sends a command to the electric lift 11, the lift starts to operate, and the height is raised by 0.1 meters, the experimenter conducts the experiment on the adjusted test bench, the controller 6 continuously monitors its operation process, during the experiment, if the experimenter operates incorrectly, the controller 6 will issue a prompt signal (sound and image) and display the correct operation steps. If the operation is correct, no prompt is issued.

[0056] The cleaning assembly includes a moving chute 4 arranged on the top of the main test bench 1, and a moving rack is arranged in the moving chute 4; the moving chute 4 is slidably matched with a moving frame 10, and a moving motor is arranged inside the moving frame 10, and the output shaft of the moving motor is coaxially fixedly connected with a moving gear meshing with the moving rack;

[0057] A first cleaning block 13 and a second cleaning block 16 are installed at the bottom of the mobile frame 10, a first cleaning layer 14 is bonded to the bottom of the first cleaning block 13, and a second cleaning layer 17 is bonded to the bottom of the second cleaning block 16, and the first cleaning layer 14 and the second cleaning layer 17 are both in contact with the surface of the main test bench 1; a storage cavity for storing cleaning liquid is arranged inside the second cleaning block 16, and the storage cavity is connected to a delivery pump 18, and the output end of the delivery pump 18 is connected to a plurality of drainage pipes, and the other ends of the drainage pipes are all located between the second cleaning block 16 and the second cleaning layer 17; a plurality of fans 15 are arranged at the bottom of the mobile frame 10, and the fans 15 are all located between the first cleaning block 13 and the second cleaning block 16; the water tank 2 is located within the movement trajectory of the mobile frame 10.

[0058] The water tank 2 is connected to several waste liquid recovery boxes, and corresponding labels such as "organic waste liquid", "inorganic waste liquid" and "acid-base waste liquid" can be affixed to each waste liquid recovery box. A solenoid valve is provided at the connection point between the water tank 2 and the waste liquid recovery box, and the solenoid valve is electrically connected to the controller 6. The controller 6 is also used to control the mobile rack 10 to move to the vicinity of the water tank 2 after the experiment and the experimental teaching are completed, and the experimenter cleans the experimental tools; the controller 6 is also used to control the opening of the solenoid valve corresponding to the experimental project based on the preset experimental project data when the experiment is completed and the analytical tools are cleaned. For example, the experimenter conducts a chemical experiment involving acid-base reaction, which will produce acid-base waste liquid. During the experiment, the experimenter places the used test tubes, beakers and other tools on the mobile rack 10. After the test is finished, the experimenter notifies the controller 6 through the control panel or voice command that the test has been completed. After receiving the command, the controller 6 first determines the preset test type and the type of waste liquid generated (in this case, acid and alkali waste liquid). The controller 6 controls the electromagnetic valve connected to the water tank 2 and the "acid and alkali waste liquid" recovery box to open, allowing the waste liquid in the water tank 2 to flow into the designated recovery box. At the same time, the controller 6 controls the mobile rack 10 to move to the vicinity of the water tank 2 to prepare for cleaning the test tools. In addition, during the process of the mobile rack 10 moving to the vicinity of the water tank 2, the first cleaning layer 14 and the second cleaning layer 17 equipped therewith automatically start working to clean the surface of the main test bench 1, wherein the first cleaning layer 14 and the second cleaning layer 17 can both be dry cleaning cloths, but during the movement of the mobile rack 10, the cleaning liquid in the second cleaning block 16 can be quantitatively input into the drain pipe and flow to the second cleaning layer 17 to wet it by controlling the output of the delivery pump 18, so as to improve the effect of subsequent cleaning. At the same time, during the movement of the mobile rack 10, the fan 15 can also be started to blow toward the main test bench 1 to accelerate the evaporation rate of the cleaning liquid on its surface, further improve the cleaning efficiency, and avoid excessive wetting of the main test bench 1 after cleaning, which affects subsequent test teaching.

[0059] At the same time, in order to further improve the teaching effect and help teachers understand the students' learning situation and operation level in real time, the controller 6 is also used to analyze the liquid level information of the reagent analyzed by the experimenter in a certain step before and after use based on the image information obtained by the image collector 3 (analysis is performed on the reagents that can be used for liquid level analysis in the preset experimental step data to reduce the problem of insufficient image acquisition liquid level accuracy caused by the characteristics of some analytical reagents), obtain the dosage of the reagent, and compare and analyze it with the preset dosage. When the difference between the dosage of the reagent and the preset dosage does not fall within the preset allowable error range, an error signal (sound and image, etc.) is issued to remind the experimenter and inform him of the correct dosage value. For example, before the experiment starts, the teacher has preset the correct reagent and instrument information in the controller 6. During the experiment, the controller 6 recognizes the reagents and instruments selected by the students on the auxiliary test bench 9 in real time through the image collector 3, and determines whether they are correct. When the hydrochloric acid dosage used by the student exceeds the preset allowable error range, the controller 6 immediately issues an error signal (sound and image, etc.) and displays the correct dosage value. Students quickly adjust the amount of hydrochloric acid used according to the prompts of controller 6 to ensure the accuracy of the experiment. At the same time, students are cultivated to have a rigorous and meticulous experimental attitude and improve their professional quality and experimental skills.

[0060] The controller 6 is also used to identify the reagents or instruments selected by the experimenter on the auxiliary test bench 9 through the image acquisition device 3, and judge whether the selected reagents or instruments are correct based on the current test steps; if it is judged to be wrong, a prompt signal is issued, and the correct reagent or instrument information is displayed to guide the experimenter to replace it. For example, during the experiment, the controller 6 monitors the student's operation in real time through the image acquisition device 3, including the connection method of the circuit and the use of the measuring instrument. When the controller 6 finds that the student's operation is wrong, it will immediately issue a prompt signal (sound and image, etc.), and display the correct operation steps and precautions through the controller 6. Further cultivate students' rigorous and meticulous experimental attitude and improve their professional quality and experimental skills.

[0061] Therefore, by evaluating or scoring the experimenter's level according to the number of times the experimenter is corrected during a certain experiment, it is convenient for teachers to quickly grasp the specific circumstances of each student's experimental operation.

[0062] Embodiment 2:

[0063] The difference from Example 1 is that Figure 1 As shown, a placement rack 5 for placing test reagents or test instruments is installed on the top of the mobile rack 10.

[0064] The specific implementation process is as follows: After the experimenter takes out the required test reagents (such as solution A, solution B, indicators, etc.) and utensils (such as beakers, test tubes, droppers, etc.) from the storage rack 8 and places them on the main test bench 1, these reagents and utensils are classified and placed on the placement rack 5 at the top of the mobile rack 10 so that they can be used at any time, so that some reagents or utensils to be used are kept away from the operation area to reduce the possibility of accidental contact during operation. After the experiment is over, the experimenter can put the used reagents or utensils back on the placement rack 5 and move them to the water tank 2 with the mobile rack 10. When cleaning, the experimenter can easily remove the utensils from the placement rack 5 for cleaning and sorting. The cleaned utensils can be put back on the placement rack 5 for drying, and the water droplets on the surface of the cleaned utensils will fall into the water tank 2 to avoid water stains on the cleaned utensils placed on the main test bench 1.

[0065] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A teaching test bench for analytical chemistry, characterized in that: The invention comprises a main test bench (1) and an auxiliary test bench (9), wherein the main test bench (1) and the auxiliary test bench (9) are hingedly connected, and a driving unit for rotating the auxiliary test bench (9) around the main test bench (1) is arranged at the hinge, and the driving unit is electrically connected to a controller (6) located at the top of the main test bench (1); an adjusting component for adjusting the relative height between the experimenter and the main test bench (1) is arranged on one side of the main test bench (1), and the adjusting component is electrically connected to the controller (6); a water tank (2) is arranged on the side of the surface of the main test bench (1) away from the auxiliary test bench (9); and a plurality of An image acquisition device (3) electrically connected to the controller (6); a cleaning component for cleaning the main test bench (1) and electrically connected to the controller (6) is installed on the top of the main test bench (1); a plurality of moving wheels (12) are arranged at the bottom of the auxiliary test bench (9); a plurality of protective covers (7) are arranged at the top of the auxiliary test bench (9); storage racks (8) are arranged inside the protective covers (7); the bottom of the storage racks (8) passes through the protective covers (7) and extends to the inside of the auxiliary test bench (9) and is coaxially fixedly connected to a drive motor located inside the auxiliary test bench (9); the drive motor is electrically connected to the controller (6); The controller (6) is used to analyze the experimenter's personal information and the experiment step information based on the image information acquired by the image acquisition device (3), and judge whether the experimenter's current operation steps are correct based on the preset experimental standard step information; when it is judged that the experimenter's operation is wrong, it sends a prompt signal to remind the experimenter and informs the experimenter of the correct experimental step information; when it is judged that the experimenter's operation is correct, it directly prompts the operator to continue the subsequent experimental operation.

2. The teaching test bench for analytical chemistry according to claim 1 is characterized in that: The adjustment component comprises an electrically controlled lifting platform (11) arranged on one side of the main test bench (1), and the electrically controlled lifting platform (11) is electrically connected to the controller (6).

3. The teaching test bench for analytical chemistry according to claim 2 is characterized in that: The cleaning assembly comprises a movable slide groove (4) arranged on the top of the main test bench (1), wherein a movable rack is arranged in the movable slide groove (4); the movable slide groove (4) is slidably matched with a movable frame (10), wherein a movable motor is arranged inside the movable frame (10), and an output shaft of the movable motor is coaxially fixedly connected with a movable gear meshing with the movable rack; A first cleaning block (13) and a second cleaning block (16) are installed at the bottom of the mobile frame (10); a first cleaning layer (14) is bonded to the bottom of the first cleaning block (13); a second cleaning layer (17) is bonded to the bottom of the second cleaning block (16); the first cleaning layer (14) and the second cleaning layer (17) are both in contact with the surface of the main test bench (1); a storage cavity for storing cleaning liquid is arranged inside the second cleaning block (16); the storage cavity is connected to a delivery pump (18); the output end of the delivery pump (18) is connected to a plurality of drainage pipes; the other ends of the drainage pipes are all located between the second cleaning block (16) and the second cleaning layer (17); a plurality of fans (15) are arranged at the bottom of the mobile frame (10); and the fans (15) are all located between the first cleaning block (13) and the second cleaning block (16); and the water tank (2) is located within the movement track of the mobile frame (10).

4. The teaching test bench for analytical chemistry according to claim 3 is characterized in that: A placement rack (5) for placing test reagents or test instruments is installed on the top of the mobile rack (10).

5. The teaching test bench for analytical chemistry according to claim 4 is characterized in that: The water tank (2) is connected to a plurality of waste liquid recovery boxes, and electromagnetic valves are provided at the connection points between the water tank (2) and the waste liquid recovery boxes, and the electromagnetic valves are electrically connected to the controller (6).

6. The teaching test bench for analytical chemistry according to claim 5 is characterized in that: The controller (6) is also used to obtain the height information of the experimenter based on the image information obtained by the image collector (3), and to adjust the lifting height of the electric-controlled lifting platform (11).

7. The teaching test bench for analytical chemistry according to claim 6 is characterized in that: The controller (6) is also used to control the movable frame (10) to move above the water tank (2) after the experiment is finished and the experimental teaching is completed.

8. The teaching test bench for analytical chemistry according to claim 7 is characterized in that: The controller (6) is also used to control the electromagnetic valve corresponding to the test item to open when the test is completed and the analysis tool is cleaned up based on the preset test item data.

9. The teaching test bench for analytical chemistry according to claim 8 is characterized in that: The controller (6) is also used to analyze the liquid level information of the reagent before and after use in a certain step based on the image information obtained by the image acquisition device (3), obtain the dosage of the reagent, and compare and analyze it with the preset dosage. When the difference between the dosage of the reagent and the preset dosage does not fall within the preset allowable error range, an error signal is issued to remind the experimenter and inform him of the correct dosage value.

10. The teaching test bench for analytical chemistry according to claim 9 is characterized in that: The controller (6) is also used to identify the reagent or instrument selected by the experimenter on the auxiliary test bench (9) through the image acquisition device (3), and judge whether the selected reagent or instrument is correct based on the current test steps; if it is judged to be wrong, a prompt signal is issued and the correct reagent or instrument information is displayed to guide the experimenter to replace it.

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