A fully automatic titrator

Abstract

The utility model provides a kind of full-automatic titrator, it is related to analytical instrument technical field, including sample feeding device, uncover lid device, lifting device, liquid adding titration device and titrator host, sample feeding device is provided with the sample placement station for placing sample cup;Uncover lid device is located above sample feeding device;Lifting device includes lifting drive mechanism and the lifting frame connected with lifting drive mechanism, and lifting frame is located above sample feeding device;Liquid adding titration device is provided with liquid adding pipe, and titrator host is provided with function electrode, and the liquid adding end of liquid adding pipe and function electrode are all arranged on lifting frame;The utility model can realize automatic sample feeding, automatic uncover lid and titration analysis etc., whole process does not need manual intervention, on the one hand, it greatly reduces labor intensity, improves analysis efficiency, on the other hand, it guarantees the stability and consistency of analysis process, improves analysis precision, can effectively avoid reagent direct contact at the same time, reduces security risk, improves operation safety.

Description

Technical Field

[0001] This utility model relates to the field of analytical instrument technology, specifically to a fully automatic titrator. Background Technology

[0002] Titration analysis, as a classic and widely used quantitative analysis method in the field of chemical analysis, is widely used in many fields such as food testing, pharmaceutical research and development, environmental monitoring, and chemical production due to its clear operating principle and high accuracy. For example, it is used in scenarios such as the determination of acidity in food, the calibration of the content of active ingredients in pharmaceuticals, and the detection of pollutant concentrations in water. It is of great significance for ensuring product quality, controlling the production process, and assessing environmental safety. However, the mainstream titration analysis equipment currently on the market is still mainly manual and semi-automatic. These types of equipment have many insurmountable defects in practical applications, which seriously restrict the efficiency, accuracy and automation level of titration analysis. The specific manifestations are as follows: I. Cumbersome Operation Procedures and High Degree of Human Intervention: Manual titrators rely entirely on the operator's experience and skills. From sample transfer, capping and uncapping sample cups, adding titrant, to determining the titration endpoint, every step requires manual intervention. Even semi-automatic titrators, while partially automating titrant addition, still require manual handling for sample loading, capping sample cups, and transferring samples between different processes. This not only increases the workload for operators but also makes standardization of the operation procedures difficult. Second, the low analytical efficiency makes it difficult to meet the needs of batch testing: Due to the significant human intervention involved in the operation of manual and semi-automatic titrators, completing the titration analysis of each sample often takes a considerable amount of time. Furthermore, after analyzing one sample, manual procedures such as changing and cleaning the sample cups and resetting the equipment are required before the next sample can be analyzed. This operating mode results in poor continuous operation capability of the equipment, limiting the number of samples that can be processed per unit of time. Third, human error has a significant impact, making it difficult to guarantee the accuracy of analytical results: In manual titration, key operations such as controlling the titrant's dropping rate and determining the titration endpoint rely on the operator's subjective experience. Different operators have different operating habits and judgment standards. Even the same operator may have operational deviations due to changes in conditions at different times. These human factors directly lead to errors in the titration results. In addition, during manual sample transfer and cup cap operation in semi-automatic titrators, problems such as sample spillage and sample contamination may occur, further affecting the accuracy and reliability of the analytical results and making it difficult to meet the requirements of high-precision analysis scenarios. IV. Potential Safety Hazards for Operators: Titration analysis often involves corrosive and toxic chemical reagents such as acids, alkalis, and organic solvents. Manual and semi-automatic titrators require operators to be in close contact with these reagents. During sample transfer, reagent addition, and cup capping, improper operation can easily lead to reagent spillage, posing a safety hazard to the operator. Utility Model Content

[0003] The purpose of this utility model is to provide a fully automatic titrator to solve the above-mentioned technical problems existing in the prior art; the preferred technical solutions among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides a fully automatic titrator, comprising a sample delivery device, a cap opening and closing device, a lifting device, a liquid addition titration device, and a titrator main unit. The sample delivery device has a sample placement station for placing sample cups, and the sample delivery device can transport the sample cups to the cap opening and closing device and the lifting device. The cap opening and closing device is located above the sample delivery device and is used to open and close the caps on the sample cups. The lifting device includes a lifting drive mechanism and a lifting frame connected to the lifting drive mechanism, and the lifting frame is located above the sample delivery device. The liquid addition titration device is provided with a liquid addition tube, and the liquid addition end of the liquid addition tube is disposed on the lifting frame. The titrator main unit is provided with a functional electrode, and the functional electrode is disposed on the lifting frame.

[0005] Preferably, the sample delivery device is configured as a turntable device, the turntable device includes a rotating platform, and the rotating platform is provided with a plurality of placement slots along the circumference that are adapted to the sample cup, the placement slots forming the sample placement station.

[0006] Preferably, the cap-opening / closing device includes a support mechanism, a linear drive mechanism, an adsorption mechanism, and a detection mechanism, wherein: the linear drive mechanism is fixedly mounted on the support mechanism; the adsorption mechanism is connected to the drive end of the linear drive mechanism and can reciprocate under the drive of the linear drive mechanism to adsorb or release the cap of the sample cup; the detection mechanism is mounted on the support mechanism and is used to detect the cap-opening / closing state of the cap.

[0007] Preferably, the support mechanism includes a support arm assembly and a housing assembly, wherein: the end of the support arm assembly is connected to the housing assembly, the linear drive mechanism and the adsorption mechanism are both disposed within the housing assembly, the bottom side of the housing assembly is provided with an opening for the adsorption mechanism to move out or back, and the detection mechanism is disposed at the end of the support arm assembly.

[0008] Preferably, the lifting drive mechanism is provided with a linear module, and the slider of the linear module is fixedly connected to the lifting frame.

[0009] Preferably, the liquid titration device includes a reagent container and a first liquid delivery power device, wherein: the reagent container is connected to the first liquid delivery power device through a first connecting pipe, the liquid inlet end of the liquid addition pipe is connected to the first liquid delivery power device, and the first liquid delivery power device is used to deliver the reagent in the reagent container to the sample cup.

[0010] Preferably, the first liquid transport power device is configured as a high-flow liquid transport pump or a fine-flow liquid transport pump.

[0011] Preferably, the fully automatic titrator includes a cleaning device, which is equipped with a cleaning tube, and the cleaning end of the cleaning tube is located on the lifting frame.

[0012] Preferably, the cleaning device includes a cleaning tank and a second liquid conveying power device, wherein: the cleaning tank is connected to the second liquid conveying power device through a second connecting pipe, the liquid inlet end of the cleaning pipe is connected to the second liquid conveying power device, and the second liquid conveying power device is used to convey the cleaning agent in the cleaning tank to the sample cup.

[0013] Preferably, the cleaning device includes a waste liquid tank and a third liquid conveying power device, wherein: the waste liquid tank is connected to the third liquid conveying power device through a third connecting pipe, the waste liquid tank is connected to a waste liquid collection pipe, the collection end of the waste liquid collection pipe is disposed on the lifting frame, and the third liquid conveying power device is used to convey the waste liquid in the sample cup to the waste liquid tank.

[0014] The fully automatic titrator provided by this utility model has at least the following beneficial effects: I. Achieve full-process automation, significantly reducing manual intervention and labor intensity. The sample delivery device automatically carries sample cups at the sample placement station and accurately delivers them to the corresponding operating positions of the cap-opening and lifting devices, eliminating the need for manual sample transfer. The cap-opening and lifting device automatically opens and closes the sample cups, avoiding sample contamination, evaporation, or operational errors that may occur during manual cap opening and closing. The lifting device uses a lifting drive mechanism to raise and lower the lifting frame, which in turn simultaneously moves the liquid addition tube and functional electrode mounted on the lifting frame to complete the lifting and positioning, achieving automatic liquid addition and automatic titration operations. The entire process, from sample loading, delivery, cleaning and draining, cap opening and closing to titration analysis, requires no manual intervention. This not only significantly reduces the labor intensity of operators but also completely avoids the error risks associated with manual operation, ensuring the stability and consistency of the analytical process. II. Improve analytical efficiency and adapt to batch sample testing needs Because the various devices form a coordinated and automated process: the sample delivery device can carry sample cups in batches and automatically transport them sequentially; the cap opening and closing device and the lifting device can synchronously complete corresponding operations according to the sample transport rhythm; and the liquid addition titration device and the titrator main unit can respond to titration needs in real time, eliminating the need for manual switching and waiting between steps. Compared to manual titration, which requires operation on each sample individually, and semi-automatic titration, which requires manual assistance to connect steps, this invention can achieve continuous automated analysis of batch samples, significantly shortening the analysis cycle of a single sample and significantly improving overall analysis efficiency. III. Improve analytical precision and ensure the accuracy of test results The automated operation of each device avoids the uncertainties of manual operation. The precise delivery of the sample feeding device ensures minimal positioning error of the sample cup, providing a stable foundation for subsequent cap opening and closing, liquid addition, and electrode positioning. The automated operation of the cap opening and closing device avoids changes in sample state (such as volatilization or contamination) caused by manual cap opening and closing. The lifting device achieves precise lifting of the lifting frame through a drive mechanism, ensuring that the liquid addition end of the liquid addition tube and the functional electrode can be accurately positioned in the optimal position inside the sample cup, avoiding titration errors caused by manual liquid addition or inaccurate electrode positioning. This effectively ensures the accuracy of the test results. In addition, the cleaning device ensures that the electrodes are clean and avoids contamination between different samples, further improving the stability and accuracy of the test results.

[0015] IV. Avoid direct contact with reagents to improve operational safety: The processes of opening and closing the cap, adding liquid, sample transportation, titration, and cleaning are all completed automatically by mechanical structure. Operators do not need to come into close contact with sample cups and titrants containing corrosive or toxic reagents. The lifting and lowering of the liquid addition tube and functional electrode are precisely controlled by the lifting device to avoid reagent splashing. This effectively ensures the personal safety of operators. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a structural schematic diagram from one perspective of one embodiment of the present invention; Figure 2 This is a structural schematic diagram from another perspective of one embodiment of the present invention; Figure 3This is a structural schematic diagram from one perspective of another embodiment of the present invention; Figure 4 This is a structural schematic diagram from another perspective of another embodiment of the present invention; Figure 5 This is a schematic diagram of the feeding device on the support device of this utility model; Figure 6 This is a structural schematic diagram of the cover opening and closing device and the lifting device on the support device of this utility model; Figure 7 This is a schematic diagram of the structure of the cover opening and closing device of this utility model; Figure 8 This is an assembly diagram of the linear drive mechanism and adsorption mechanism of the cover opening and closing device of this utility model. Figure 9 This is a cross-sectional schematic diagram of a portion of the structure of this utility model; Figure 10 This is an exploded view of the supporting structure of the cover opening and closing device of this utility model; Figure 11 This is a utility model Figure 6 Enlarged view of part A.

[0018] Figure Labels 1. Sample feeding device; 11. Turntable device; 111. Rotating platform; 112. Placement slot; 2. Cover opening and closing device; 21. Support mechanism; 211. Support arm assembly; 2111. Forearm; 2112. Rear arm; 2113. Connector; 212. Housing assembly; 2121. Lower housing; 2122. Upper housing; 22. Linear drive mechanism; 23. Adsorption mechanism; 231. Electromagnet; 24. Detection mechanism; 25. Control board; 26. Plug; 3. Lifting device; 31. Lifting 32. Drive mechanism; 4. Lifting frame; 5. Liquid addition titration device; 6. Reagent container; 7. First liquid delivery power unit; 8. High-flow-rate liquid delivery pump; 9. Precision-flow-rate liquid delivery pump; 10. Liquid addition tube; 11. Titrator main unit; 22. Functional electrode; 33. Cleaning device; 44. Cleaning tank; 55. Second liquid delivery power unit; 66. Waste liquid container; 7. Third liquid delivery power unit; 8. Cleaning tube; 9. Waste liquid collection tube; 10. Support device; 11. Sample cup. Detailed Implementation

[0019] 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.

[0020] Example 1: This utility model provides a fully automatic titrator, for reference... Figure 1 and Figure 2 As shown, the fully automatic titrator includes a sample delivery device 1, a cover opening and closing device 2, a lifting device 3, a liquid addition titration device 4, and a titrator main unit 5.

[0021] The sample delivery device 1 is equipped with a sample placement station for placing sample cups 8. The sample delivery device 1 can transport sample cups 8 to the cap opening and closing device 2 and the lifting device 3. The cap opening and closing device 2 is located above the sample delivery device 1 and is used to open and close the caps of sample cups 8. The lifting device 3 includes a lifting drive mechanism 31 and a lifting frame 32. The lifting frame 32 is located above the sample delivery device 1. The lifting drive mechanism 31 is connected to the lifting frame 32 and can drive the lifting frame 32 to move up and down. The liquid addition titration device 4 is equipped with a liquid addition tube 43, and the liquid addition end of the liquid addition tube 43 is set on the lifting frame 32. The titrator main unit 5 is equipped with a functional electrode 51, and the functional electrode 51 is set on the lifting frame 32.

[0022] During analysis, the sample delivery device 1 transports the sample cup 8 to the cap-opening device 2. The cap-opening device 2 opens the cap of the sample cup 8, and the sample delivery device 1 transports the sample cup 8 with its open top to the area below the lifting frame 32. The lifting drive mechanism 31 drives the lifting frame 32 to move downward until the functional electrode 51 and the liquid addition end of the liquid addition tube 43 are inserted into the cup. Then, the liquid addition titration device 4 injects reagent into the cup through the liquid addition tube 43. The titrator host 5 performs titration analysis on the sample through the functional electrode 51. Afterward, the lifting drive mechanism 31 drives the lifting frame 32 to rise, and the sample delivery device 1 transports the cup to the cap-opening device 2. The cap-opening device 2 closes the cap on the cup, and the analysis is completed.

[0023] This invention, through the coordinated operation of a sample delivery device 1, a cap opening and closing device 2, a lifting device 3, a liquid addition and titration device 4, and a titrator main unit 5, can achieve automatic sample delivery, automatic cap opening and closing, and titration analysis. The entire process requires no manual intervention. On the one hand, it automates the titration analysis process, significantly reducing labor intensity and improving analysis efficiency. On the other hand, it ensures the stability and consistency of the analysis process, improves analytical accuracy, and effectively avoids direct contact of reagents, reducing safety hazards and improving operational safety.

[0024] Example 2: Example 2 is based on Example 1: like Figures 3 to 11 As shown, the sample delivery device 1 is equipped with a turntable device 11, which includes a rotating platform 111. The rotating platform 111 has a plurality of placement slots 112 that are adapted to the sample cups 8 along the circumferential direction. The placement slots 112 form the sample placement station.

[0025] During the titration analysis, the rotating platform 111 rotates under the drive of the rotating drive mechanism, thereby transporting the sample cup 8 to the corresponding device.

[0026] The multiple placement slots 112 allow for the placement of multiple sample cups 8, enabling titration analysis of different samples and batch titration analysis.

[0027] Specifically, the rotating platform 111 is configured as a double-layer platform, including an upper platform and a lower platform. The upper platform is positioned above the lower platform, and multiple support and limiting holes are evenly arranged along its circumference on the upper platform. A support groove is provided on the lower platform corresponding to the positions of the support and limiting holes. The diameter of the support and limiting holes is larger than the diameter of the support groove. The sample cup 8 is frustum-shaped, and its bottom end passes through the support and limiting holes and is placed within the support groove. The wall of the support and limiting holes abuts against the outer wall of the sample cup 8.

[0028] The rotation drive mechanism of the turntable device 11 is existing technology and will not be described in detail.

[0029] As an optional implementation, the cover opening and closing device 2 includes a support mechanism 21, a linear drive mechanism 22, an adsorption mechanism 23, and a detection mechanism 24.

[0030] The linear drive mechanism 22 is fixedly mounted on the support mechanism 21; the adsorption mechanism 23 is connected to the drive end of the linear drive mechanism 22 and can reciprocate along a straight line under the drive of the linear drive mechanism 22 to adsorb or release the cover; the detection mechanism 24 is mounted on the support mechanism 21 and is used to detect the open / closed state of the cover.

[0031] The linear drive mechanism 22 is configured as a vertical telescopic mechanism, which is fixedly mounted on the support mechanism 21. The bottom telescopic end of the vertical telescopic mechanism is connected to the adsorption mechanism 23. The vertical telescopic mechanism can be an electric telescopic mechanism, a pneumatic telescopic mechanism, or a hydraulic telescopic mechanism. Preferably, the vertical telescopic mechanism is configured as an electric push rod, which has the advantages of stable power output and high stroke control accuracy.

[0032] The adsorption mechanism 23 is set as an electromagnet 231. The cover body contains ferromagnetic material. When the electromagnet 231 is energized, it can stably adsorb the cover. The electromagnetic adsorption method not only has a rapid adsorption and release response, which can improve the operation efficiency, but also has high adsorption stability, ensuring the opening and closing effect of the cover. At the same time, the structure is compact, the size is small, and the space occupied is small.

[0033] The detection mechanism 24 includes a position sensor, which is mounted on the support mechanism 21 and is used to detect the relative position of the adsorption mechanism 23. The position sensor can directly detect the real-time position of the adsorption mechanism 23, ensuring that the adsorption mechanism 23 moves into place when performing the opening or closing action.

[0034] As an optional implementation, the support mechanism 21 includes a support arm assembly 211 and a housing assembly 212.

[0035] The end of the support arm assembly 211 is connected to the housing assembly 212. The linear drive mechanism 22 and the adsorption mechanism 23 are both located inside the housing assembly 212. The bottom side of the housing assembly 212 is provided with an opening for the adsorption mechanism 23 to move out or back. The detection mechanism 24 is located at the end of the support arm assembly 211.

[0036] The support arm assembly 211 includes a forearm 2111 and a rear arm 2112, which are fixedly connected by an inner connector 2113. The inner connector 2113 is a right-angle connector, and the ends of the forearm 2111 and the rear arm 2112 are connected by the right-angle connector and threaded fasteners. The right-angle connector is located inside the forearm 2111 and the rear arm 2112, forming a concealed installation.

[0037] The housing assembly 212 is fixedly connected to the end of the forearm 2111, and the housing assembly 212 is inserted into the forearm 2111. To further provide a firm connection, connection holes for installing threaded fasteners are provided on the end side wall of the forearm 2111 and the corresponding position of the housing assembly 212. Further, the housing assembly 212 includes an upper housing 2122 and a lower housing 2121. The upper housing 2122 is disposed on the upper side of the lower housing 2121. The electric push rod is fixedly disposed in the upper housing 2122. The lower housing 2121 is connected to the end of the forearm 2111. The electromagnet 231 is movably disposed in the lower housing 2121. The opening is disposed on the lower housing 2121. The telescopic end of the electric push rod is inserted into the lower housing 2121 and connected to the electromagnet 231.

[0038] As an optional implementation, the automatic cover opening and closing device includes a control board 25, which is disposed in the forearm 2111. The electric push rod, the electromagnet 231 and the position sensor are all electrically connected to the control board 25.

[0039] The control board 25 is electrically connected to the main unit wiring harness, and the support arm assembly 211 is provided with a wiring harness channel. The main unit wiring harness passes through the wiring harness channel and is connected to a plug 26. The plug 26 is electrically connected to the titrator main unit 5.

[0040] As an optional implementation, the lifting drive mechanism 31 is provided with a linear module, and the slider of the linear module is fixedly connected to the lifting frame 32.

[0041] The linear module is existing technology, and its detailed structure will not be described in detail.

[0042] As an optional implementation, the fully automatic titrator includes a support device 7, which includes a base. The base has an installation cavity, and the rotation drive mechanism of the turntable device 11 is disposed in the installation cavity. The linear module is vertically disposed on the top surface of the base, and the support arm assembly 211 is fixedly disposed on the outer wall of the linear module.

[0043] As an optional implementation, the liquid titration device 4 includes a reagent tank 41 and a first liquid delivery power device 42. The reagent tank 41 is connected to the first liquid delivery power device 42 through a first connecting pipe, and the liquid inlet end of the liquid addition pipe 43 is connected to the first liquid delivery power device 42. The first liquid delivery power device 42 is used to deliver the reagent in the reagent tank 41 to the sample cup 8.

[0044] The reagent container 41 and the first liquid conveying power device 42 work together to achieve automatic reagent dispensing.

[0045] As an optional implementation, the first liquid transport power unit 42 is configured as a high-flow liquid transport pump 421 or a fine-flow liquid transport pump 422.

[0046] The high-flow-rate liquid transfer pump 421 is suitable for titration scenarios that require rapid addition of reagents. It has low requirements for the accuracy of reagent addition and can use existing peristaltic pumps.

[0047] The precision flow liquid transfer pump 422 is suitable for titration scenarios requiring precise reagent adjustment and can be used with existing metering pumps.

[0048] In practical applications, users can choose to install the aforementioned liquid transfer pumps according to their actual needs, or install both types of liquid transfer pumps simultaneously. Quick-connect couplings are installed at the ends of the pipelines, and users can connect the corresponding liquid transfer pumps and pipelines according to their actual needs.

[0049] As an optional implementation, the fully automatic titrator includes a cleaning device 6, which is provided with a cleaning tube 65, and the cleaning end of the cleaning tube 65 is disposed on the lifting frame 32.

[0050] In batch sample titration analysis, residual substances from the previous sample may adhere to the inner wall of the liquid addition tube 43, functional electrode 51, or sample cup 8. If not cleaned in time, they will cause cross-contamination of the analysis results of subsequent samples and affect the accuracy of the detection. The cleaning device 6 can drive the cleaning tube 65 to move up and down synchronously through the lifting frame 32. After a set of sample titrations is completed, the liquid addition tube 43, functional electrode 51, and sample cup 8 are automatically cleaned to effectively remove residual substances and avoid cross-contamination.

[0051] As an optional implementation, the cleaning device 6 includes a cleaning tank 61 and a second liquid conveying power device 62, which employs an existing conveying pump.

[0052] The cleaning tank 61 is connected to the second liquid conveying power device 62 through the second connecting pipe, and the liquid inlet end of the cleaning pipe 65 is connected to the second liquid conveying power device 62. The second liquid conveying power device 62 is used to convey the cleaning agent in the cleaning tank 61 to the sample cup 8.

[0053] The cleaning tank 61 and the second liquid delivery power device 62 work together to achieve automatic cleaning of the target components (liquid filling pipe 43, functional electrode 51 and sample cup 8).

[0054] As an optional implementation, the cleaning device 6 includes a waste liquid tank 63 and a third liquid conveying power unit 64, which employs an existing conveying pump.

[0055] Waste liquid tank 63 is connected to third liquid conveying power device 64 through third connecting pipe. Waste liquid tank 63 is connected to waste liquid collection pipe 66. The collection end of waste liquid collection pipe 66 is set on lifting frame 32. Third liquid conveying power device 64 is used to convey waste liquid in sample cup 8 to waste liquid tank 63.

[0056] After the cleaning operation is completed, a large amount of waste liquid containing pollutants will remain in the sample cup 8. If the waste liquid is manually poured out, it will not only increase the labor intensity of the operators, but may also cause environmental pollution or personal injury due to waste liquid leakage. The third liquid conveying power device 64 can quickly and thoroughly draw the waste liquid in the sample cup 8 into the waste liquid tank 63 for centralized storage through the waste liquid collection pipe 66, so as to realize the automatic collection and treatment of waste liquid.

[0057] like Figure 1 and Figure 2 As shown, Figure 1 and Figure 2 In the embodiment shown, the dispensing liquid and the cleaning liquid are different solutions, and the dispensing liquid is a reagent. This embodiment has a cleaning tank 61, a waste liquid tank 63 and a reagent tank 41. In actual application, if multiple reagents are required for titration analysis, the reagent tank 41 and the first liquid conveying power device 42 can be added.

[0058] like Figures 3 to 10 As shown, Figures 3 to 10 The implementation shown is mainly for soil pH detection and analysis. Both the injection solution and the cleaning solution are water. Therefore, the cleaning tank 61 and the reagent tank 41 are shared. The functional electrode 51 is a pH electrode.

[0059] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0062] 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 fully automatic titrator, characterized in that, It includes a sample delivery device, a cap opening and closing device, a lifting device, a liquid addition and titration device, and the main unit of the titrator, wherein: The sample delivery device is equipped with a sample placement station for placing sample cups, and the sample delivery device can transport the sample cups to the lid opening and closing device and the lifting device. The cap-opening and cap-closing device is located above the sample delivery device and is used to open and close the cap of the sample cup; The lifting device includes a lifting drive mechanism and a lifting frame connected to the lifting drive mechanism, the lifting frame being located above the sample delivery device; The liquid addition titration device is equipped with a liquid addition tube, and the liquid addition end of the liquid addition tube is located on the lifting frame; The titrator main unit is equipped with a functional electrode, which is mounted on the lifting frame.

2. The fully automatic titrator according to claim 1, characterized in that, The sample delivery device is configured as a turntable device, which includes a rotating platform. The rotating platform has multiple placement slots along its circumference that are adapted to the sample cups, and the placement slots form the sample placement station.

3. The fully automatic titrator according to claim 1, characterized in that, The cover opening and closing device includes a support mechanism, a linear drive mechanism, an adsorption mechanism, and a detection mechanism, wherein: The linear drive mechanism is fixedly mounted on the support mechanism; The adsorption mechanism is connected to the drive end of the linear drive mechanism and can reciprocate under the drive of the linear drive mechanism to adsorb or release the lid of the sample cup. The detection mechanism is mounted on the support mechanism and is used to detect the open / closed state of the cover.

4. The fully automatic titrator according to claim 3, characterized in that, The support mechanism includes a support arm assembly and a housing assembly, wherein: The end of the support arm assembly is connected to the housing assembly. The linear drive mechanism and the adsorption mechanism are both disposed inside the housing assembly. The bottom side of the housing assembly is provided with an opening for the adsorption mechanism to move out or back. The detection mechanism is disposed at the end of the support arm assembly.

5. The fully automatic titrator according to claim 1, characterized in that, The lifting drive mechanism is equipped with a linear module, and the slider of the linear module is fixedly connected to the lifting frame.

6. The fully automatic titrator according to claim 1, characterized in that, The titration apparatus includes a reagent tank and a first liquid delivery power unit, wherein: The reagent container is connected to the first liquid delivery power device via a first connecting pipe, and the inlet end of the liquid adding pipe is connected to the first liquid delivery power device. The first liquid delivery power device is used to deliver the reagent in the reagent container to the sample cup.

7. The fully automatic titrator according to claim 6, characterized in that, The first liquid transport power device is configured as a high-flow liquid transport pump or a fine-flow liquid transport pump.

8. The fully automatic titrator according to claim 1, characterized in that, The fully automatic titrator includes a cleaning device, which is equipped with a cleaning tube, the cleaning end of which is located on the lifting frame.

9. The fully automatic titrator according to claim 8, characterized in that, The cleaning device includes a cleaning tank and a second liquid conveying power device, wherein: The cleaning tank is connected to the second liquid conveying power device via a second connecting pipe. The inlet end of the cleaning pipe is connected to the second liquid conveying power device, which is used to convey the cleaning agent in the cleaning tank to the sample cup.

10. The fully automatic titrator according to claim 8, characterized in that, The cleaning device includes a waste liquid tank and a third liquid conveying power unit, wherein: The waste liquid tank is connected to the third liquid conveying power device via a third connecting pipe. The waste liquid tank is connected to a waste liquid collection pipe, and the collection end of the waste liquid collection pipe is located on the lifting frame. The third liquid conveying power device is used to convey the waste liquid in the sample cup to the waste liquid tank.

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