A fully automatic permanganate index analyzer
By designing a fully automated permanganate index analyzer, the problems of large space occupation and cumbersome manual intervention of existing equipment have been solved, achieving efficient and accurate automated detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO RANNUO SCI INSTR CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-31
AI Technical Summary
Existing permanganate index analyzers are space-consuming, require cumbersome manual intervention, have low detection efficiency and accuracy, and are prone to errors.
A fully automated permanganate index analyzer was designed, comprising a frame, a water bath thermostat, a liquid addition mechanism, a gripping mechanism, and a visual recognition device, to achieve automated sample introduction, titration, and result calculation, reducing manual intervention.
It improves detection efficiency, accuracy, and repeatability, avoids human error, and achieves fully automated operation.
Smart Images
Figure CN224581556U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of permanganate index measuring equipment, and in particular to a fully automatic permanganate index measuring instrument. Background Technology
[0002] Most existing permanganate index analyzers are single-degree-of-freedom sample introduction devices and drop ratio monitoring devices, which occupy a large space, require an external computer, and require manual replacement of the titration position, which is cumbersome and prone to errors. Therefore, a fully automatic permanganate index analyzer is needed to reduce manual intervention and improve detection efficiency, accuracy and repeatability. Utility Model Content
[0003] This invention provides a fully automatic permanganate index analyzer, which can improve detection efficiency.
[0004] To solve the above-mentioned technical problems, this utility model provides a fully automatic permanganate index analyzer, comprising: The frame includes a sample rack, a water bath area, and a liquid addition area. A water bath temperature control mechanism is installed in the water bath area, and the water bath temperature control mechanism includes a water bath tank and a temperature control module; A liquid dispensing mechanism includes one or more first liquid dispensing mechanisms and one or more second liquid dispensing mechanisms. The first liquid dispensing mechanism includes a first dispensing arm, a first peristaltic pump, a first dispensing tube, and a first dispensing drive mechanism. The first dispensing drive mechanism drives the first dispensing arm to rotate horizontally. The second liquid dispensing mechanism includes a second dispensing arm, a second peristaltic pump, a second dispensing tube, a dispensing needle, and a second dispensing drive mechanism. The dispensing needle is disposed on the second dispensing arm and is connected to the outlet end of the second dispensing tube. The second dispensing drive mechanism drives the second dispensing arm to move vertically up and down and to rotate horizontally. The first and second liquid dispensing mechanisms are respectively used to deliver different solutions. The gripping mechanism includes a moving device and an electric gripper. The moving device is used to drive the electric gripper to move to the sample rack, the water bath area and the liquid addition area. The electric gripper is used to clamp and transfer the sample cup. A visual recognition device is installed in the liquid addition area to identify changes in the color of the liquid in the sample cup in real time.
[0005] As a preferred embodiment of the above technical solution, the frame is provided with a first mounting base, the first liquid dispensing arm is rotatably mounted on the first mounting base, and the first liquid dispensing drive mechanism is drivenly connected to the first liquid dispensing arm; the frame is also provided with a second mounting base, the second mounting base is provided with a lifting seat, the lifting seat is slidably mounted on the second mounting base in the vertical direction, the second liquid dispensing arm is rotatably mounted on the lifting seat, and the second liquid dispensing drive mechanism includes a lifting drive motor and a rotating drive motor, the lifting drive motor is drivenly connected to the lifting seat, and the rotating drive motor is drivenly connected to the second liquid dispensing arm.
[0006] As a preferred embodiment of the above technical solution, a drain seat is also provided at the liquid filling area. The first liquid filling arm can drive the liquid outlet end of the first liquid filling tube to move above the drain seat, and the second liquid filling arm can drive the liquid outlet end of the liquid filling needle to move above the drain seat.
[0007] As a preferred embodiment of the above technical solution, the water bath includes a cover plate with several through holes for sample cups to be inserted into the water bath. A flip cover is also provided at each through hole, and the flip cover is rotatably connected to the cover plate. An elastic reset element is provided between the flip cover and the cover plate.
[0008] As a preferred embodiment of the above technical solution, the water bath is equipped with a water supply pipe and a float switch. The water supply pipe is connected to an external water source, and the float switch is used to monitor the liquid level in the water bath and control the opening and closing of the water supply pipe.
[0009] As a preferred embodiment of the above technical solution, a support plate is provided inside the water bath, and a heating cavity is formed between the support plate and the bottom of the water bath. The temperature control module includes a heating element and a temperature sensor, both of which are located inside the heating cavity. The support plate is provided with several connecting holes.
[0010] As a preferred embodiment of the above technical solution, the moving device includes an X-axis moving module, a Y-axis moving module, and a Z-axis lifting module. The electric gripper is installed at the end of the Z-axis lifting module. The electric gripper includes a gripper driver and a gripper assembly. The gripper driver is used to drive the gripper assembly to open and close.
[0011] As a preferred embodiment of the above technical solution, the end of the gripper assembly is fitted with an anti-slip ring.
[0012] As a preferred embodiment of the above technical solution, the fully automatic permanganate index analyzer further includes a stirring motor, which is installed below the liquid addition zone. A magnetic stir bar is provided inside the sample cup, and the stirring motor drives the magnetic stir bar to rotate through magnetic coupling.
[0013] This utility model provides a fully automatic permanganate index analyzer, comprising: a frame, a water bath constant temperature mechanism, a liquid addition mechanism, a gripping mechanism, and a visual recognition device; the solution includes potassium permanganate standard solution, sodium oxalate standard solution, and sulfuric acid solution; the liquid addition mechanism includes two first liquid addition mechanisms and one second liquid addition mechanism, respectively corresponding to potassium permanganate standard solution, sodium oxalate standard solution, and sulfuric acid solution, and is connected to the corresponding reagent bottles through the first liquid addition tube and the second liquid addition tube; during detection, the water bath is preheated to a set temperature and maintained at a constant temperature; the gripping mechanism grips a sample cup containing 100mL of water sample pre-placed on the sample rack and accurately moves it to the liquid addition area; through the first liquid addition mechanism... The first liquid dispensing mechanism and the second liquid dispensing mechanism sequentially inject 10 mL of potassium permanganate standard solution and 5 mL of sulfuric acid solution. The sample cup is then transferred to a water bath and digested in boiling water for 30 minutes. After digestion, the grasping mechanism moves the sample cup back to the liquid dispensing area. 10 mL of sodium oxalate standard solution is then injected through the first liquid dispensing mechanism, followed by dropwise addition of potassium permanganate standard solution. During titration, the visual recognition device is activated and captures the solution color change in real time until the solution changes from colorless to light pink and does not fade within 30 seconds. At this point, the visual recognition device determines that the titration endpoint has been reached, stops the titration, and automatically records the volume of potassium permanganate standard solution consumed. The system then automatically calculates the permanganate index value according to a preset formula, completing the entire detection process. The entire process requires no manual intervention, effectively avoiding human error and improving detection efficiency, accuracy, and repeatability.
[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of a fully automatic permanganate index analyzer according to an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of a fully automatic permanganate index analyzer from another perspective in an embodiment of this utility model. Figure 3 This is a three-dimensional structural diagram of the water bath constant temperature mechanism in an embodiment of the present utility model; Figure 4 This is a three-dimensional structural diagram of the support plate in an embodiment of the present utility model; Figure 5 This is a three-dimensional structural diagram of the temperature control module in an embodiment of the present utility model; Figure 6 This is a three-dimensional structural diagram of the electric gripper in an embodiment of the present utility model; Figure 7 This is a three-dimensional structural diagram of the first liquid addition mechanism in an embodiment of the present utility model; Figure 8 This is a three-dimensional structural diagram of the second liquid addition mechanism in an embodiment of the present utility model; In the diagram: 1. Frame; 2. Water bath thermostat mechanism; 3. Liquid addition mechanism; 4. Gripping mechanism; 5. Vision recognition device; 6. First liquid addition mechanism; 7. Second liquid addition mechanism; 8. Sample cup; 101. Sample rack; 102. Water bath area; 103. Liquid addition area; 104. First mounting base; 105. Second mounting base; 106. Lifting base; 107. Drainage base; 108. Stirring motor; 201. Water bath; 202. Temperature control module; 203. Cover plate; 204. Through hole; 205. Flip cover; 206. Water supply pipe; 207. Float switch; 208. Support plate; 20 9. Heating element; 210. Temperature sensor; 211. Communicating hole; 401. Moving device; 402. Electric gripper; 403. X-axis moving module; 404. Y-axis moving module; 405. Z-axis lifting module; 406. Gripper driver; 407. Gripper assembly; 408. Anti-slip ring; 601. First liquid filling arm; 602. First peristaltic pump; 603. First liquid filling drive mechanism; 701. Second liquid filling arm; 702. Second peristaltic pump; 703. Liquid filling needle; 704. Second liquid filling drive mechanism; 705. Lifting drive motor; 706. Rotation drive motor. Detailed Implementation
[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0017] See Figures 1 to 8 This utility model provides a fully automatic permanganate index analyzer, comprising: The frame 1 is equipped with a sample rack 101, a water bath area 102, and a liquid addition area 103. A water bath constant temperature mechanism 2 is installed in the water bath area 102. The water bath constant temperature mechanism 2 includes a water bath tank 201 and a temperature control module 202. The liquid dispensing mechanism 3 includes one or more first liquid dispensing mechanisms 6 and one or more second liquid dispensing mechanisms 7. The first liquid dispensing mechanism 6 includes a first liquid dispensing arm 601, a first peristaltic pump 602, a first liquid dispensing tube, and a first liquid dispensing drive mechanism 603. The first liquid dispensing drive mechanism 603 is used to drive the first liquid dispensing arm 601 to rotate along a horizontal plane. The second liquid dispensing mechanism 7 includes a second liquid dispensing arm 701, a second peristaltic pump 702, a second liquid dispensing tube, a liquid dispensing needle 703, and a second liquid dispensing drive mechanism 704. The liquid dispensing needle 703 is disposed on the second liquid dispensing arm 701 and is connected to the liquid outlet end of the second liquid dispensing tube. The second liquid dispensing drive mechanism 704 is used to drive the second liquid dispensing arm 701 to move up and down in the vertical direction and rotate along a horizontal plane. The first liquid dispensing mechanism 6 and the second liquid dispensing mechanism 7 are used to deliver different solutions. The gripping mechanism 4 includes a moving device 401 and an electric gripper 402. The moving device 401 is used to drive the electric gripper 402 to move to the sample rack 101, the water bath area 102 and the liquid addition area 103. The electric gripper 402 is used to clamp and transfer the sample cup 8. A visual recognition device 5 is installed in the liquid addition area 103 to identify the color change of the liquid in the sample cup 8 in real time.
[0018] This utility model provides a fully automatic permanganate index analyzer, comprising: a frame 1, a water bath constant temperature mechanism 2, a liquid dispensing mechanism 3, a gripping mechanism 4, and a visual recognition device 5; the solution includes potassium permanganate standard solution, sodium oxalate standard solution, and sulfuric acid solution; the liquid dispensing mechanism 3 includes two first liquid dispensing mechanisms 6 and one second liquid dispensing mechanism 7, respectively corresponding to potassium permanganate standard solution, sodium oxalate standard solution, and sulfuric acid solution, and is connected to the corresponding reagent bottles through the first liquid dispensing tube and the second liquid dispensing tube; during detection, the water bath 201 is preheated to a set temperature and kept at a constant temperature; the gripping mechanism 4 grips the sample cup 8 containing 100mL of water sample pre-placed on the sample rack 101 and accurately moves it to the liquid dispensing area 103, and through the first liquid dispensing tube and the second liquid dispensing tube, it is connected to the corresponding reagent bottle; during detection, the water bath 201 is preheated to a set temperature and kept at a constant temperature; the second liquid dispensing ... is connected to the sample cup The first liquid addition mechanism 6 and the second liquid addition mechanism 7 sequentially inject 10 mL of potassium permanganate standard solution and 5 mL of sulfuric acid solution. Then, the sample cup 8 is transferred to the water bath 201 and digested in a boiling water bath for 30 minutes. After digestion, the grasping mechanism 4 moves the sample cup 8 back to the liquid addition area 103. After injecting 10 mL of sodium oxalate standard solution through the first liquid addition mechanism 6, potassium permanganate standard solution is added dropwise. During the titration, the visual recognition device 5 is activated and captures the color change of the solution in real time until the solution changes from colorless to light pink and does not fade within 30 seconds. At this point, the visual recognition device 5 determines that the titration endpoint has been reached, stops the titration, and automatically records the volume of potassium permanganate standard solution consumed. The system then automatically calculates the permanganate index value according to a preset formula, completing the entire detection process. The entire process requires no manual intervention, effectively avoiding human error and improving detection efficiency, accuracy, and repeatability.
[0019] In this embodiment, the first liquid addition arm 601 is provided with a fixing hole, and the first liquid addition tube passes through the fixing hole and is fastened by a clamp to ensure the stability of the pipeline during the liquid addition process. The first liquid addition driving mechanism 603 is used to drive the first liquid addition arm 601 to rotate along the horizontal plane, thereby achieving precise alignment of the first liquid addition tube with the sample cup 8 to complete the horizontal positioning. After the liquid addition is completed, it automatically retracts to the standby position to avoid interfering with subsequent actions. The second liquid addition arm 701 is provided with a needle holder, and the liquid addition needle 703 is installed on the second liquid addition arm 701 through the needle holder. The second liquid addition driving mechanism 704 has both vertical lifting and horizontal rotation capabilities, which can drive the liquid addition needle 703 to accurately extend into the sample cup 8 for liquid addition, ensuring that the sodium oxalate solution does not evaporate, splash, or stick to the wall. After the liquid addition is completed, it automatically retracts to the standby position to avoid interfering with subsequent actions. The entire liquid addition process does not require manual intervention, which can effectively avoid human error and improve detection efficiency, accuracy, and repeatability.
[0020] In a further embodiment of this invention, a first mounting base 104 is provided on the frame 1, and the first liquid-adding arm 601 is rotatably mounted on the first mounting base 104. The first liquid-adding drive mechanism 603 is drivenly connected to the first liquid-adding arm 601. A second mounting base 105 is also provided on the frame 1, and a lifting seat 106 is provided on the second mounting base 105. The lifting seat 106 is slidably mounted on the second mounting base 105 in the vertical direction. The second liquid-adding arm 701 is rotatably mounted on the lifting seat 106. The second liquid-adding drive mechanism 704 includes a lifting drive motor 705 and a rotation drive motor 706. The lifting drive motor 705 is drivenly connected to the lifting seat 106, and the rotation drive motor 706 is drivenly connected to the second liquid-adding arm 701.
[0021] In this embodiment, the first liquid addition drive mechanism 603 is a drive motor, and the first liquid addition arm 601 is connected to the first liquid addition drive mechanism 603 via a synchronous belt to achieve precise angle control; the second mounting base 105 is provided with a guide shaft, the lifting base 106 slides along the guide shaft, the lifting base 106 is provided with a connecting block, and the lifting drive motor 705 is connected to the connecting block via a synchronous belt to ensure smooth and unbiased lifting movement; the rotation drive motor 706 is connected to the second liquid addition arm 701 via a synchronous belt to achieve precise angle control; the rotation of the first liquid addition arm 601 and the lifting and rotation of the second liquid addition arm 701 both adopt a motor combined with a synchronous belt drive structure, which takes into account both high-precision positioning and low vibration characteristics, and can effectively improve the stability and consistency of the detection process.
[0022] In a further embodiment of this invention, a drain seat 107 is also provided at the liquid filling area 103. The first liquid filling arm 601 can move the liquid outlet end of the first liquid filling tube above the drain seat 107, and the second liquid filling arm 701 can move the liquid outlet end of the liquid filling needle 703 above the drain seat 107.
[0023] In this embodiment, a drain seat 107 is also provided at the liquid addition area 103. Before injecting the solution into the sample cup 8, to ensure accurate measurement, the liquid outlet of the first liquid addition tube is moved above the drain seat 107 by the first liquid addition arm, and the liquid outlet of the liquid addition needle 703 is moved above the drain seat 107 by the second liquid addition arm to expel air bubbles from the second liquid addition tube. After the liquid flows out stably, it is then precisely moved above the sample cup 8 to complete the injection. The drain seat 107 is connected to an external wastewater collection system. By setting the drain seat 107, the system automatically performs an air venting calibration process before each liquid addition, significantly eliminating the influence of air bubbles on volume measurement and effectively improving the stability and consistency of the detection process.
[0024] In a further embodiment of this invention, the water bath 201 includes a cover plate 203, on which a plurality of through holes 204 are provided. The through holes 204 are used for the sample cup 8 to pass into the water bath 201. A flip cover 205 is also provided at the through hole 204. The flip cover 205 is rotatably connected to the cover plate 203, and an elastic reset member is provided between the flip cover 205 and the cover plate 203.
[0025] In this embodiment, the flip cover 205 automatically opens under the pressure of the sample cup 8 after it is inserted into the through hole 204, and automatically closes under the action of the elastic reset component after the sample cup 8 is removed. This effectively reduces heat loss in the water bath 201, maintains the stability of the constant temperature environment, and prevents water vapor from overflowing and interfering with the liquid addition accuracy. Each through hole 204 is adapted to the outer diameter of the sample cup 8, ensuring that the sample cup 8 is inserted vertically and positioned securely, further improving operating efficiency and further reducing heat loss and water vapor interference in the water bath 201, providing a more stable temperature control basis for the liquid addition process. The elastic reset component is a torsion spring, one end of which is fixed to the cover plate 203, and the other end is connected to the flip cover 205, providing a stable and reliable reset torque, ensuring that the opening and closing action of the flip cover 205 is smooth, responsive, and has a long service life.
[0026] In a further embodiment of this invention, the water bath 201 is provided with a water supply pipe 206 and a float switch 207. The water supply pipe 206 is connected to an external water source, and the float switch 207 is used to monitor the liquid level in the water bath 201 and control the opening and closing of the water supply pipe 206.
[0027] In this embodiment, when the sample cup 8 is placed in the water bath 201 for reaction, it is necessary to ensure that the liquid level in the water bath 201 is higher than the liquid surface in the sample cup 8 to ensure a constant temperature effect. The float switch 207, together with the water replenishment pipe 206, realizes automatic liquid level monitoring and dynamic water replenishment. When the liquid level drops to the set threshold due to evaporation or sample handling, the float switch 207 triggers the water replenishment pipe 206 to start water replenishment until the liquid level rises back to the safe threshold and then closes. The water replenishment process does not require manual intervention, which can effectively improve detection efficiency, accuracy and repeatability.
[0028] In a further embodiment of this invention, a support plate 208 is provided inside the water bath 201, and a heating cavity is formed between the support plate 208 and the bottom of the water bath 201. The temperature control module 202 includes a heating element 209 and a temperature sensor 210, both of which are located inside the heating cavity. The support plate 208 is provided with a plurality of connecting holes 211.
[0029] In this embodiment, when the sample cup 8 is placed in the water bath 201 for reaction, the bottom of the sample cup 8 contacts the surface of the support plate 208. The temperature is uniformly conducted upward through the connecting hole 211 to the working area of the water bath 201, avoiding direct contact between the sample cup 8 and the heating element 209, which could lead to local overheating. This ensures a gentle and uniform temperature gradient. The temperature sensor 210 provides real-time feedback on the temperature inside the heating chamber and, in conjunction with the heating element 209, precisely controls the power output, thereby effectively controlling the overall temperature fluctuation within the water bath 201 and thus improving the detection accuracy.
[0030] In a further embodiment of this invention, the moving device 401 includes an X-axis moving module 403, a Y-axis moving module 404, and a Z-axis lifting module 405. The electric gripper 402 is mounted at the end of the Z-axis lifting module 405. The electric gripper 402 includes a gripper driver 406 and a gripper assembly 407. The gripper driver 406 is used to drive the gripper assembly 407 to open and close.
[0031] In this embodiment, the X-axis moving module 403 includes an X-axis guide rail, an X-axis slider, and an X-axis servo motor. The Y-axis moving module 404 is vertically mounted on the X-axis slider and includes a Y-axis guide rail, a Y-axis slider, and a Y-axis servo motor. The Z-axis lifting module 405 is vertically mounted on the Y-axis slider and includes a lifting guide rail, a lifting slider, and a Z-axis servo motor. The electric gripper 402 is mounted on the lifting slider. The gripper assembly 407 includes a pair of symmetrically arranged gripper arms, and the gripper driver 406 drives the gripper arms to open and close synchronously. By setting up coordinated control of the X, Y, and Z axis servo motors, the sample cup 8 can be accurately positioned and smoothly transferred in three-dimensional space. The gripper driver 406 controls the gripping force of the gripper arms to prevent the sample cup 8 from tilting, slipping, or being deformed by pressure. The entire process of gripping, moving, and releasing the sample cup 8 does not require manual intervention, which can effectively avoid human error and improve detection efficiency, accuracy, and repeatability.
[0032] In a further embodiment of this invention, an anti-slip ring 408 is fitted onto the end of the gripper assembly 407.
[0033] In this embodiment, the end of the gripper assembly 407 is fitted with an anti-slip ring 408 to increase the friction between the gripper assembly 407 and the outer wall of the sample cup 8, thereby preventing the sample cup 8 from slipping or tilting during gripping and moving.
[0034] In a further embodiment of this invention, the fully automatic permanganate index analyzer further includes a stirring motor 108, which is installed below the liquid addition zone 103. A magnetic stir bar is provided inside the sample cup 8, and the stirring motor 108 drives the magnetic stir bar to rotate through magnetic coupling.
[0035] In this embodiment, a magnetic stir bar is built into the sample cup 8. The stirring motor 108 drives the stir bar to rotate at a uniform speed through magnetic coupling, so that the mixed solution is fully mixed in the sample cup 8, eliminating concentration gradients and local reaction inhomogeneity. Specifically, when 100 mL of water sample is added to the sample cup 8, a magnetic stir bar is placed simultaneously. After the sample cup 8 is accurately moved to the liquid addition area 103, 10 mL of potassium permanganate standard solution and 5 mL of sulfuric acid solution are injected sequentially through the two sets of liquid addition mechanisms 3. Then, the stirring motor 108 is started, driving the magnetic stir bar to rotate so that the solution is uniformly mixed. After digestion, 10 mL of sodium oxalate standard solution is injected into the sample cup 8 and the stirring motor 108 is started again to ensure uniform mixing of the solution. During the titration, the stirring motor 108 runs at a low speed to maintain the dynamic equilibrium of the solution and avoid local over-titering, thereby ensuring the accuracy and repeatability of the titration endpoint determination.
[0036] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0037] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0038] 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 permanganate index meter, characterized by, include: The frame includes a sample rack, a water bath area, and a liquid addition area. A water bath temperature control mechanism is installed in the water bath area, and the water bath temperature control mechanism includes a water bath tank and a temperature control module; A liquid dispensing mechanism includes one or more first liquid dispensing mechanisms and one or more second liquid dispensing mechanisms. The first liquid dispensing mechanism includes a first dispensing arm, a first peristaltic pump, a first dispensing tube, and a first dispensing drive mechanism. The first dispensing drive mechanism drives the first dispensing arm to rotate horizontally. The second liquid dispensing mechanism includes a second dispensing arm, a second peristaltic pump, a second dispensing tube, a dispensing needle, and a second dispensing drive mechanism. The dispensing needle is disposed on the second dispensing arm and is connected to the outlet end of the second dispensing tube. The second dispensing drive mechanism drives the second dispensing arm to move vertically up and down and to rotate horizontally. The first and second liquid dispensing mechanisms are respectively used to deliver different solutions. The gripping mechanism includes a moving device and an electric gripper. The moving device is used to drive the electric gripper to move to the sample rack, the water bath area and the liquid addition area. The electric gripper is used to clamp and transfer the sample cup. A visual recognition device is installed in the liquid addition area to identify changes in the color of the liquid in the sample cup in real time.
2. The fully automatic permanganate index meter according to claim 1, characterized in that, The frame is provided with a first mounting base, and the first liquid dispensing arm is rotatably mounted on the first mounting base. The first liquid dispensing drive mechanism is drivenly connected to the first liquid dispensing arm. The frame is also provided with a second mounting base, and the second mounting base is provided with a lifting seat. The lifting seat is slidably mounted on the second mounting base in the vertical direction. The second liquid dispensing arm is rotatably mounted on the lifting seat. The second liquid dispensing drive mechanism includes a lifting drive motor and a rotating drive motor. The lifting drive motor is drivenly connected to the lifting seat, and the rotating drive motor is drivenly connected to the second liquid dispensing arm.
3. The fully automatic permanganate index meter according to claim 1, characterized in that, A drain seat is also provided at the liquid filling area. The first liquid filling arm can move the liquid outlet end of the first liquid filling tube to above the drain seat, and the second liquid filling arm can move the liquid outlet end of the liquid filling needle to above the drain seat.
4. The fully automatic permanganate index analyzer according to claim 1, characterized in that, The water bath includes a cover plate with several through holes for sample cups to be inserted into the water bath. A flip cover is also provided at each through hole. The flip cover is rotatably connected to the cover plate, and an elastic reset element is provided between the flip cover and the cover plate.
5. The fully automatic permanganate index analyzer according to claim 4, characterized in that, The water bath is equipped with a water supply pipe and a float switch. The water supply pipe is connected to an external water source, and the float switch is used to monitor the liquid level in the water bath and control the opening and closing of the water supply pipe.
6. The fully automatic permanganate index analyzer according to claim 5, characterized in that, The water bath has a support plate inside, and a heating cavity is formed between the support plate and the bottom of the water bath. The temperature control module includes a heating element and a temperature sensor. Both the heating element and the temperature sensor are located inside the heating cavity. The support plate has several connecting holes.
7. The fully automatic permanganate index analyzer according to claim 1, characterized in that, The moving device includes an X-axis moving module, a Y-axis moving module, and a Z-axis lifting module. The electric gripper is installed at the end of the Z-axis lifting module. The electric gripper includes a gripper driver and a gripper assembly. The gripper driver is used to drive the gripper assembly to open and close.
8. The fully automatic permanganate index analyzer according to claim 7, characterized in that, The end of the gripper assembly is fitted with an anti-slip ring.
9. The fully automatic permanganate index analyzer according to claim 1, characterized in that, The fully automatic permanganate index analyzer also includes a stirring motor, which is installed below the liquid addition area. A magnetic stir bar is provided inside the sample cup, and the stirring motor drives the magnetic stir bar to rotate through magnetic coupling.