A reagent correction device for carbon black iodine absorption value

Abstract

The utility model discloses a reagent correction device for carbon black iodine adsorption value relates to carbon black performance detection technical field, aims at solving the error of big, low efficiency problem of existing reagent concentration correction relies on manual, this device includes reagent storage subassembly, injection pump subassembly, conveying pipeline subassembly, stirring subassembly, titration colorimetric mechanism, sliding table and control system, reagent storage subassembly contains multiple reagent storage bottle, and injection pump subassembly is connected with storage bottle and titration colorimetric mechanism through conveying pipeline, and titration colorimetric mechanism includes colorimetric carousel, colorimetric cup, colorimetric motor, back light, magnetic stirrer and colorimetric camera, and control system is electrically connected with each component, receives the color information of colorimetric camera and controls each part work. The device can realize the automation correction of sodium thiosulfate solution and iodine solution concentration, through accurate control reagent dosage, real -time monitoring titration end point, improves correction accuracy and efficiency, provides reliable reagent guarantee for carbon black iodine adsorption value determination.

Description

Technical Field

[0001] This utility model relates to the field of carbon black performance testing technology, and more specifically, to a reagent calibration device for carbon black iodine absorption value. Background Technology

[0002] In the determination of iodine uptake value in carbon black, the accuracy of the concentrations of sodium thiosulfate solution and iodine solution directly determines the reliability of the measurement results. In existing technologies, the calibration of these two reagent concentrations largely relies on manual operation. This manual operation suffers from problems such as large errors in reagent extraction, inaccurate determination of the titration endpoint, uneven reagent mixing, and low calibration efficiency. This not only increases the workload of operators but also makes it difficult to guarantee the accuracy of the calibrated reagent concentrations, thus affecting the accuracy of the carbon black iodine uptake value measurement results and failing to meet the high-efficiency and precise quality testing requirements of carbon black in industrial production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a reagent calibration device for the iodine adsorption value of carbon black, so as to solve the problems of large error and low efficiency of the existing manual calibration reagent concentration, and realize the automated and accurate calibration of the concentration of sodium thiosulfate solution and iodine solution.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A reagent calibration device for the iodine adsorption value of carbon black includes a reagent storage component, an injection pump component, a delivery pipeline component, a stirring component, a titration colorimetric mechanism, a slide table, and a control system.

[0006] The reagent storage assembly includes bottles A, B, C, D, E, F, G, and H, which are used to hold potassium iodate solution, potassium iodide solution, sulfuric acid solution, sodium thiosulfate solution, distilled water, sodium thiosulfate mother liquor, iodine solution, and iodine mother liquor, respectively.

[0007] The injection pump assembly includes injection pump A, injection pump B, injection pump C, injection pump D, injection pump E, injection pump F, injection pump G, and injection pump H; the delivery tubing assembly includes tubing A, tubing B, tubing C, tubing D, tubing E, tubing F, tubing G, tubing H, tubing E delivery one, tubing E delivery two, tubing A, tubing B, tubing C, tubing D, tubing G, tubing F, and tubing H.

[0008] The stirring assembly includes magnetic stirrer A, magnetic stirrer B, and magnetic stirrer C. Magnetic stirrer B is positioned below bottle D and is used to stir and mix the solution in bottle D. Magnetic stirrer C is positioned below bottle G and is used to stir and mix the solution in bottle G.

[0009] The input end of injection pump A is connected to bottle A via tube A, and the output end is connected to the slide via tube A. The input end of injection pump B is connected to bottle B via tube B, and the output end is connected to the slide via tube B. The input end of injection pump C is connected to bottle C via tube C, and the output end is connected to the slide via tube C. The input end of injection pump D is connected to bottle D via tube D, and the output end is connected to the slide via tube D. Injection pump E has two output ends, connected to bottle D via tube E1 and to bottle G via tube E2, respectively. The input end of injection pump E is connected to bottle E via tube E. The input end of injection pump F is connected to bottle F via tube F, and the output end is connected to bottle D via tube F. The input end of injection pump X is connected to bottle X via tube X, and the output end is connected to bottle G via tube X. The input end of injection pump G is connected to bottle G via tube G, and the output end is connected to the slide via tube G.

[0010] The slide can drive tubes A, B, C, D, and G to be inserted into the cuvette of the titration colorimetric mechanism, thereby realizing the delivery of reagents to the titration colorimetric mechanism.

[0011] The titration colorimetric mechanism includes a colorimetric turntable, colorimetric cups, a colorimetric motor, a backlight, a magnetic stirrer, and a colorimetric camera. Multiple colorimetric cups are evenly arranged on the colorimetric turntable. The colorimetric motor is connected to the colorimetric turntable and drives its rotation to switch between different colorimetric cups. The backlight and colorimetric camera are respectively located on both sides of the colorimetric cup. The backlight provides a stable light source for the colorimetric cup, and the colorimetric camera collects the color information of the mixed solution inside the colorimetric cup and transmits it to the control system. The magnetic stirrer is located below the colorimetric cup and stirs the mixed solution entering the cup, accelerating the reaction rate.

[0012] The control system is electrically connected to injection pumps A, B, C, D, E, F, G, and H, magnetic stirrer B, magnetic stirrer C, magnetic stirrer A, colorimetric motor, colorimetric camera, and slide table, respectively. It is used to receive color information transmitted by the colorimetric camera and control the working status of each injection pump, stirrer, colorimetric motor, and slide table according to a preset program.

[0013] Furthermore, the number of colorimetric cups is at least two, and they are evenly distributed on the circumference of the colorimetric turntable.

[0014] Furthermore, the aforementioned tubes A, B, C, D, G, E (first), E (second), F, and C are all made of corrosion-resistant polytetrafluoroethylene (PTFE) to prevent the reagents from corroding the pipes and to ensure the purity of the reagents during the delivery process.

[0015] Furthermore, the slide table includes a slide rail, a slider, and a drive motor. The A, B, C, D, and G delivery pipes are all fixedly mounted on the slider. The drive motor is connected to the slider for driving the slider to move along the slide rail, thereby achieving precise alignment between the delivery pipes and the cuvette.

[0016] More specifically, when the carbon black iodine adsorption value calibration device of this utility model is working, the corresponding reagents are first loaded into each special bottle. The control system controls the slide, injection pump and other components to complete the addition of potassium iodate, potassium iodide and sulfuric acid solutions and the titration of the sodium thiosulfate solution to be calibrated in the colorimetric cup. According to the volume deviation, the mother liquor or distilled water is added and the cycle is verified until 20 ml of sodium thiosulfate solution just makes the mixture colorless, thus completing the calibration. Then, using the calibrated sodium thiosulfate solution as a reference, 20 ml of the iodine solution to be calibrated is titrated. According to the volume deviation, distilled water or iodine mother liquor is added and the cycle is verified until 20 ml of iodine solution just consumes 24 ml of sodium thiosulfate solution and the mixture becomes colorless, thus completing the calibration of the two reagents.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] This invention achieves fully automated operation of sodium thiosulfate solution and iodine solution concentration correction by coordinating the operation of each injection pump, stirrer, colorimetric mechanism and slide through the control system. No manual intervention is required, which effectively reduces the workload of operators and avoids errors caused by manual operation.

[0019] By acquiring color information of the mixed solution in real time using a colorimetric camera, combined with the control system's accurate determination of the titration endpoint and the precise control of reagent extraction by each syringe pump, the accuracy of reagent concentration correction was ensured. At the same time, through multiple titration verifications, the accuracy of the corrected reagent concentration was further guaranteed, providing a reliable guarantee for the accurate determination of the iodine uptake value of carbon black. Attached Figure Description

[0020] 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.

[0021] Figure 1 is a schematic diagram of the overall structure of the reagent calibration device for carbon black iodine adsorption value in an embodiment of this utility model.

[0022] Figure 2 is a schematic diagram of the titration colorimetric mechanism in an embodiment of this utility model.

[0023] Among them, 1 - Bottle A, 2 - Bottle B, 3 - Bottle C, 4 - Bottle D, 5 - Bottle E, 6 - Bottle F, 7 - Bottle G, 8 - Bottle X, 9 - Injection Pump A, 10 - Injection Pump B, 11 - Injection Pump C, 12 - Injection Pump D, 13 - Injection Pump E, 14 - Injection Pump F, 15 - Injection Pump G, 16 - Injection Pump X, 17 - Slide Table, 18 - Titration Colorimetric Mechanism, 180 - Colorimetric Turntable, 181 - Colorimetric Cuvette, 182 - Colorimetric Motor, 183 - Backlight, 184 - Magnetic Stirrer A, 185 - Colorimetric Camera, 19 - Magnetic Stirrer B, 20 - Magnetic Stirrer C, 21 - Pulling Tube A, 22 - Pulling Tube B, 23 - Pulling Tube C, 24 - Pulling Tube D, 25 - 26 - Pipeline E, 27 - Pipeline F, 28 - Pipeline G, 29 - Pipeline E (Transport 1), 30 - Pipeline E (Transport 2), 31 - Pipeline A, 32 - Pipeline B, 33 - Pipeline C, 34 - Pipeline D, 35 - Pipeline G, 36 - Pipeline F, 37 - Pipeline H. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As shown in Figures 1 and 2, this embodiment provides a reagent calibration device for the iodine adsorption value of carbon black, including a reagent storage component, an injection pump component, a delivery pipeline component, a stirring component, a titration colorimetric mechanism 18, a slide table 17, and a control system.

[0026] The reagent storage components include bottle A 1, bottle B 2, bottle C 3, bottle D 4, bottle E 5, bottle F 6, bottle G 7, and bottle H 8, which are used to hold potassium iodate solution, potassium iodide solution, sulfuric acid solution, sodium thiosulfate solution, distilled water, sodium thiosulfate mother liquor, iodine solution, and iodine mother liquor, respectively.

[0027] The infusion pump assembly includes infusion pump A (9), infusion pump B (10), infusion pump C (11), infusion pump D (12), infusion pump E (13), infusion pump F (14), infusion pump G (15), and infusion pump H (16).

[0028] The pipeline assembly includes pipe A (21), pipe B (22), pipe C (23), pipe D (24), pipe E (25), pipe F (26), pipe G (27), pipe H (28), pipe E (transport pipe 1), pipe E (transport pipe 2), pipe A (31), pipe B (32), pipe C (33), pipe D (34), pipe G (35), pipe F (36), and pipe H (37).

[0029] The stirring assembly includes magnetic stirrer B 19, magnetic stirrer A 184, and magnetic stirrer C 20. Magnetic stirrer B 19 is located below bottle D 4, and magnetic stirrer C 20 is located below bottle G 7.

[0030] The input end of injection pump A 9 is connected to bottle A 1 via injection tube 21, and the output end is connected to slide table 17 via infusion tube 31; the input end of injection pump B 10 is connected to bottle B 2 via injection tube 22, and the output end is connected to slide table 17 via infusion tube 32; the input end of injection pump C 11 is connected to bottle C 3 via injection tube 23, and the output end is connected to slide table 17 via infusion tube 33; the input end of injection pump D 12 is connected to bottle D 4 via injection tube 24, and the output end is connected to slide table 17 via infusion tube 34; injection pump E 13 has two output ends, connected to bottle D 4 via infusion tube 1 29 and to bottle G 7 via infusion tube 2 30 respectively, and the input end of injection pump E 13 is connected to bottle E 5 via injection tube 25; the input end of injection pump F 14 is connected to bottle F 6 via injection tube 26. The output end of the pump is connected to bottle 4 via tube 36; the input end of the cinnamic injection pump 16 is connected to bottle 8 via tube 28, and the output end is connected to bottle 7 via tube 37; the input end of the heptane injection pump 15 is connected to bottle 7 via tube 27, and the output end is connected to the slide table 17 via tube 35.

[0031] The slide table 17 includes a slide rail, a slider, and a drive motor. The A-type tube 31, B-type tube 32, C-type tube 33, D-type tube 34, and G-type tube 35 are all fixedly mounted on the slider. The drive motor is connected to the slider and can drive the tubes to be inserted into the titration colorimetric mechanism 18.

[0032] The titration colorimetric mechanism 18 includes a colorimetric turntable 180, five colorimetric cups 181, a colorimetric motor 182, a backlight 183, a magnetic stirrer 184, and a colorimetric camera 185. The five colorimetric cups 181 are evenly arranged on the circumference of the colorimetric turntable 180. The colorimetric motor 182 is connected to the colorimetric turntable 180. The backlight 183 and the colorimetric camera 185 are respectively arranged on both sides of the colorimetric cups 181. The magnetic stirrer 184 is arranged below the colorimetric cups 181 in the titration state.

[0033] The control system is electrically connected to the drive motors of each injection pump, stirrer, colorimetric motor 182, colorimetric camera 185, and slide table 17 to control the overall working status of the device.

[0034] In this embodiment, the conveying pipelines such as pipeline A 31 and pipeline B 32 are all made of polytetrafluoroethylene (PTFE), which has good corrosion resistance.

[0035] The reagent calibration device for carbon black iodine absorption value of this invention consists of two stages during operation: calibration with sodium thiosulfate solution and calibration with iodine solution.

[0036] First, the sodium thiosulfate solution to be calibrated is placed into bottle D (4), the sodium thiosulfate mother liquor with a known concentration and higher than that of the sodium thiosulfate solution to be calibrated is placed into bottle F (6), distilled water is placed into bottle E (5), the iodine solution to be calibrated is placed into bottle G (7), the iodine mother liquor with a known concentration and higher than that of the iodine solution to be calibrated is placed into bottle X (8), and the potassium iodate solution, potassium iodide solution, and sulfuric acid solution are placed into bottles A (1), B (2), and C (3), respectively.

[0037] The control system controls the slide 17 to move, causing tubes A 31, B 32, and C 33 to be inserted into cuvette 1. At the same time, it controls pumps A 9, B 10, and C 11 to draw 20 ml of potassium iodate solution, 5 ml of potassium iodide solution, and 5 ml of sulfuric acid solution respectively into cuvette 181.

[0038] The magnetic stirrer 184 below cuvette 181 is activated to stir the solution inside the cuvette. The control system controls the injection pump 12 to draw a certain amount of sodium thiosulfate solution to be calibrated, which is slowly injected into cuvette 181 through tube 34 for titration. At the same time, the backlight 183 is turned on, and the colorimetric camera 185 collects the color information of the mixed solution in cuvette 181 in real time and transmits it to the control system.

[0039] When the control system determines that the mixed solution has become colorless based on the color information, it controls the injection pump 12 to stop the titration and records the volume of sodium thiosulfate solution consumed in the titration.

[0040] In Example 1, the volume of sodium thiosulfate solution consumed is greater than 20 ml. The control system calculates the required amount of sodium thiosulfate mother liquor to be added according to a preset formula, and controls the injection pump 14 to draw the corresponding amount of sodium thiosulfate mother liquor and inject it into bottle D 4 through the delivery tube 36. At the same time, the magnetic stirrer 19 is started to stir and mix the solution in bottle D 4. Then, the colorimetric motor 182 drives the colorimetric turntable 180 to rotate, and rotates the second colorimetric cup 181 to the working position. The above-mentioned addition of potassium iodate solution, potassium iodide solution, and sulfuric acid solution and the titration operation of sodium thiosulfate solution are repeated until 20 ml of sodium thiosulfate solution is consumed, and the mixed solution just turns colorless, thus completing the calibration of sodium thiosulfate solution.

[0041] In Example 2, the volume of sodium thiosulfate solution consumed is less than 20 ml. The control system calculates the required amount of distilled water to be added according to a preset formula, and controls the injection pump 13 to draw the corresponding amount of distilled water through the inlet tube 29 and inject it into bottle 4. At the same time, the magnetic stirrer 19 is started to stir and mix the solution in bottle 4. Then, the colorimetric motor 182 drives the colorimetric turntable 180 to rotate and switch to a new colorimetric cup 181. The above titration operation is repeated until 20 ml of sodium thiosulfate solution is consumed and the mixed solution just turns colorless, thus completing the calibration of the sodium thiosulfate solution.

[0042] After the sodium thiosulfate solution is calibrated, the control system controls the colorimetric turntable 180 to rotate, rotates the new colorimetric cup 181 to the working position, controls the heptyl injection pump 15 to draw 20ml of the iodine solution to be calibrated and injects it into the colorimetric cup 181 through the heptyl infusion tube 35, and starts the methyl magnetic stirrer 184 below the colorimetric cup 181.

[0043] The control system controls the injection pump 12 to draw the calibrated sodium thiosulfate solution and slowly injects it into the cuvette 181 containing iodine solution through the infusion tube 34 for titration. The colorimetric camera 185 collects the color information of the mixed solution in real time and transmits it to the control system. When the control system determines that the mixed solution has become colorless, it controls the injection pump 12 to stop the titration and records the volume of sodium thiosulfate solution consumed.

[0044] In Example 1, the volume of sodium thiosulfate solution consumed is greater than 24 ml. The control system calculates the required amount of distilled water to be added according to a preset formula, and controls the E injection pump 13 to draw the corresponding amount of distilled water and inject it into the G flask 7 through the E transfer tube 30. The C magnetic stirrer 20 set below the G flask 7 is started to stir and mix the solution in the G flask 7. Then, the colorimetric turntable 180 rotates to switch to a new colorimetric cup 181, and the above-mentioned 20 ml iodine solution addition and sodium thiosulfate solution titration operation is repeated until the 20 ml iodine solution exactly consumes 24 ml of sodium thiosulfate solution and the mixed solution becomes colorless, thus completing the correction of the iodine solution.

[0045] In Example 2, the volume of sodium thiosulfate solution consumed is less than 24 ml. The control system calculates the required amount of iodine mother liquor to be added according to a preset formula, and controls the octyl injection pump 16 to draw the corresponding amount of iodine mother liquor and inject it into the heptyl flask 7 through the octyl infusion tube 37. The p-magnetic stirrer 20 is started to stir and mix the solution in the heptyl flask 7. Then, the colorimetric turntable 180 rotates to switch to a new colorimetric cup 181, and the above titration operation is repeated until the mixed solution becomes colorless when 20 ml of iodine solution has consumed exactly 24 ml of sodium thiosulfate solution, thus completing the calibration of the iodine solution.

[0046] In practical use, the reagent calibration device for carbon black iodine uptake value in this embodiment can complete the calibration of sodium thiosulfate solution and iodine solution according to the above working principle. It has a high degree of automation, high calibration accuracy and efficiency, and can effectively meet the needs of reagent concentration calibration in carbon black iodine uptake value determination experiments.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reagent calibration device for the iodine absorption value of carbon black, characterized in that, The system includes a reagent storage assembly, a syringe pump assembly, a delivery tubing assembly, a stirring assembly, a titration and colorimetric mechanism, a slide table, and a control system. The reagent storage assembly comprises bottles A, B, C, D, E, F, G, and H, used to hold potassium iodate solution, potassium iodide solution, sulfuric acid solution, sodium thiosulfate solution, distilled water, sodium thiosulfate mother liquor, iodine solution, and iodine mother liquor, respectively. The syringe pump assembly comprises syringe pumps A, B, C, D, E, F, G, and H. The delivery pipeline assembly includes pipes A, B, C, D, E, F, G, H, E delivery pipe 1, E delivery pipe 2, A, B, C, D, G, F, and H; the stirring assembly includes magnetic stirrer B and magnetic stirrer A, with magnetic stirrer B positioned below bottle D; the input end of injection pump A is connected to bottle A via pipe A, and the output end is connected to the slide via pipe A; the input end of injection pump B is connected to bottle B via pipe B, and the output end is connected to the slide via pipe B. The input of the C injection pump is connected to the C bottle via the C suction tube, and the output is connected to the slide via the C delivery tube; the input of the D injection pump is connected to the D bottle via the D suction tube, and the output is connected to the slide via the D delivery tube; the input of the E injection pump is connected to the E bottle via the E suction tube, and its two outputs are connected to the D bottle via the E delivery tube 1 and the G bottle via the E delivery tube 2, respectively; the input of the F injection pump is connected to the F bottle via the F suction tube, and the output is connected to the D bottle via the F delivery tube; the input of the XI injection pump is connected to the XI bottle via the XI suction tube, and the output is connected to the G bottle via the XI delivery tube; the input of the G injection pump is connected to the G bottle via the G suction tube, and the output is connected to the slide via the XI delivery tube. The G-type infusion tube is connected to a sliding stage; the sliding stage can drive the A-type, B-type, C-type, D-type, and G-type infusion tubes to be inserted into the titration colorimetric mechanism; the titration colorimetric mechanism includes a colorimetric turntable, colorimetric cups, a colorimetric motor, a backlight, a magnetic stirrer (A-type), and a colorimetric camera. Multiple colorimetric cups are arranged on the colorimetric turntable, and the colorimetric motor is drivenly connected to the colorimetric turntable; the backlight and colorimetric camera are respectively arranged on both sides of the colorimetric cups, and the magnetic stirrer (A-type) is arranged below the colorimetric cups; the control system is electrically connected to each injection pump, each magnetic stirrer, colorimetric motor, colorimetric camera, and sliding stage respectively.

2. The reagent calibration device for carbon black iodine adsorption value according to claim 1, characterized in that, The number of cuvettes is at least two, and they are evenly distributed on the circumference of the cuvette turntable.

3. The reagent calibration device for carbon black iodine adsorption value according to claim 1, characterized in that, The slide table includes a slide rail, a slider, and a drive motor. The A, B, C, D, and G pipes are all fixed on the slider, and the drive motor is connected to the slider for transmission.

Images