Automatic titration device for high-purity hydrochloric acid detection

Abstract

The utility model discloses a high purity hydrochloric acid detection automatic titration device of concentration detection technical field, aims at solving the problem that manual titration detects hydrochloric acid concentration in prior art and is easy to exist misoperation and test time is long. Its weighing platform, mixed reactor, support, roots blower, controller and PH sensor, the mixed reactor places on the weighing platform, and the titration container is placed on the support, and the titration container is equipped with the titration tube mouth that points to the mixed reactor opening, and the titration container is communicated through the communicating tube between roots blower, and the detection end of PH sensor is arranged in the inside of mixed reactor, and the PH sensor, roots blower and weighing platform all are electrically connected with controller, the utility model discloses be used for controlling titration speed according to actual detection data in hydrochloric acid titration test, can effectively shorten titration time, improve the detection efficiency, reduce misoperation occurrence probability, ensure the normal advancement of detection test.

Description

Technical Field

[0001] This utility model relates to an automatic titration device for detecting high-purity hydrochloric acid, belonging to the field of hydrochloric acid concentration detection technology. Background Technology

[0002] For the detection of high-purity hydrochloric acid, titration is currently the most traditional and commonly used method. The commonly used titrant for high-purity hydrochloric acid is a standard sodium hydroxide (NaOH) solution. Sodium hydroxide reacts with hydrogen chloride (HCl) to produce water and sodium chloride, and the concentration of hydrochloric acid can be calculated by measuring the equivalence point of the reaction.

[0003] Traditional titration methods require high standards of manual operation and typically rely on manual judgment of the solution color to determine the titration midpoint, which is prone to operational errors. Furthermore, for typical testing, it is impossible for humans to determine the required titration speed, which may result in either too fast a speed affecting the determination of the titration midpoint or too slow a speed affecting the progress of the test, thus wasting time and reducing the efficiency of titration testing. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic titration device for high-purity hydrochloric acid detection. This device controls the titration speed based on actual detection data during hydrochloric acid titration experiments, which can effectively shorten titration time, improve detection efficiency, reduce the probability of misoperation, and ensure the normal progress of the detection experiment.

[0005] To achieve the above objectives, this utility model employs the following technical solution: This utility model provides an automatic titration device for high-purity hydrochloric acid, including a weighing platform, a mixing reactor, a support frame, a Roots blower, a controller, and a pH sensor. The mixing reactor is placed on the weighing platform, and a titration container is placed on the support. The titration container has a burette opening that points to the opening of the mixing reactor. The titration container is connected to the Roots blower through a connecting pipe. The detection end of the pH sensor is located inside the mixing reactor. The pH sensor, the Roots blower, and the weighing platform are all electrically connected to the controller.

[0006] Specifically, the drive shaft of the Roots blower rotor is connected to the drive shaft via a reducer.

[0007] Specifically, it also includes a rotary table and a drive device for driving the rotary table to rotate. The weighing platform is mounted on the rotary table, and the drive device is electrically connected to the controller.

[0008] Specifically, the mixing reactor is a conical flask, and the rotating platform is equipped with a fixing device for fixing the conical flask so that the opening of the conical flask is always located at the position of the rotation axis of the rotating platform.

[0009] Specifically, the fixing device includes fixing blocks arranged in a circumferential array around the rotating platform. Each fixing block is slidably provided with a slide rod. The end of the slide rod is provided with a clamping block for matching the curvature of the conical bottle surface. A spring is provided between the clamping block and the corresponding fixing block.

[0010] Specifically, the weighing platform is provided with a groove for engaging the bottom of the conical flask.

[0011] Specifically, the outer surface of the conical flask is provided with a plug sleeve that communicates with the inner cavity, the pH sensor is sealed in the plug sleeve, and the position where the pH sensor extends into the conical flask is not in the middle of the conical flask.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The titration device for high-purity hydrochloric acid detection provided by this utility model uses a pH sensor to detect the acidity and alkalinity of the solution in real time to determine the titration speed. The titration speed can be increased when the acidity is high and slowed down when the acidity is low. This helps to ensure the detection effect while increasing the detection speed, thereby reducing the experimental error rate and ensuring the efficient conduct of the experiment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the titration device provided in this embodiment of the utility model; Figure 2 This is a top view of the titration apparatus provided in this embodiment of the present invention; Figure 3 This is a utility model Figure 2 A cross-sectional view of the titration apparatus provided in the embodiment along the AA direction; Figure 4 This is a utility model Figure 2 A cross-sectional view of the titration apparatus provided in the embodiment along the BB direction; Reference numerals: 1. Weighing platform; 2. Mixing reactor; 3. Support; 4. Titration vessel; 5. Roots blower; 6. Connecting pipe; 7. pH sensor; 8. Controller; 9. Rotary table; 10. Drive unit; 11. Fixed block; 12. Slide bar; 13. Clamping block; 14. Spring. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example:

[0017] This utility model provides an automatic titration device for high-purity hydrochloric acid detection. It controls the titration speed based on actual detection data during hydrochloric acid titration experiments, effectively shortening titration time, improving detection efficiency, reducing the probability of misoperation, and ensuring the normal progress of the test. To realize the device's structural functions, it includes a weighing platform 1, a mixing reactor 2, a support 3, a Roots blower 5, a controller 8, and a pH sensor 7. Figure 1 and Figure 3 As shown in the configuration, mixing reactor 2 is used to hold high-purity hydrochloric acid. Mixing reactor 2 is placed on weighing platform 1 for subsequent pH measurement. To perform titration testing of the hydrochloric acid in mixing reactor 2, a titration container 4 is placed on support 3. Figure 3As shown, the titration vessel 4 is equipped with a burette opening pointing towards the opening of the mixing reactor 2. It contains a standard concentration of sodium hydroxide solution. The titration vessel 4 is connected to the Roots blower 5 via a connecting pipe 6. Only the bottom burette opening of the titration vessel 4 is open to the outside; that is, the titration is controlled by the air supply capacity of the Roots blower 5. When a negative pressure is generated inside the titration vessel 4, the titration can be slowed down or stopped. Because the Roots blower 5 is a positive displacement blower, it will not leak gas after the air supply is slowed down or stopped, preventing the internal pressure of the titration vessel 4 from returning to atmospheric pressure. Therefore, the pressure can be controlled by adjusting the Roots blower 5. The actual titration rate of sodium hydroxide solution is controlled by the rotation speed of the Roots blower 5. By setting up a pH sensor 7 with its detection end inside the mixing reactor 2, the pH value inside the mixing reactor 2 is monitored in real time. This can be used as a basis for controlling the rotation speed of the Roots blower 5. Ultimately, the titration rate is slowed down when approaching the midpoint of the titration, and the titration is stopped after the pH is neutral. The amount of reactant is determined by measuring the increase in mass of the liquid, thus achieving rapid titration detection of high-purity hydrochloric acid solution. For this purpose, the pH sensor 7, the Roots blower 5, and the weighing platform 1 all need to be electrically connected to the controller 8.

[0018] This utility model provides an automatic titration device for high-purity hydrochloric acid detection. In order to enable multi-level control of the rotation speed and air supply capacity of the Roots blower 5, the drive shaft of the blower rotor of the Roots blower 5 can be connected to the drive shaft (not shown in the figure) through a reducer. The drive shaft can be driven by a motor. By adjusting the reduction capability of the reducer, the more subtle changes in the rotation amplitude of the Roots blower 5 when the motor is rotating can be adjusted.

[0019] This utility model provides an automatic titration device for high-purity hydrochloric acid detection. To improve detection accuracy and the mixing speed of acid and alkali solutions, the device can also include a rotating platform 9 and a drive device 10 for driving the rotating platform 9 to rotate. By placing a weighing platform 1 on the rotating platform 9, the mixing reactor 2 on it is driven to rotate, so that the liquid after titration inside is quickly mixed and reacted fully, avoiding the pH sensor 7 from having uneven internal concentration and causing acid and alkali detection deviation. At this time, the drive device 10 should be electrically connected to the controller 8 to ensure that it can transmit power normally.

[0020] This utility model provides an automatic titration device for high-purity hydrochloric acid detection, specifically a method for rotating the mixing reactor 2. Specifically, the mixing reactor 2 can be configured as a conical flask structure, and a fixing device for securing the conical flask can be provided on the rotating platform 9 to ensure that the opening of the conical flask is always positioned along the rotation axis of the rotating platform 9. This ensures that during the rotational mixing process, the opening of the conical flask corresponds to the position of the burette, preventing the titration solution from failing to accurately fall into the mixing reactor 2 due to rotation. As a preferred embodiment, refer to... Figure 1 As shown, the fixing device includes fixing blocks 11 arranged in a circumferential array around the rotating platform 9. A sliding rod 12 is slidably mounted on each fixing block 11. The end of each sliding rod 12 has a clamping block 13 that matches the curvature of the conical flask surface. A spring 14 is provided between the clamping block 13 and the corresponding fixing block 11 to provide clamping force to the conical flask, thereby stabilizing the position of the conical flask and providing corresponding gripping friction to prevent the conical flask from sliding or rotating relative to the rotating platform 9, which would affect the actual rotational mixing effect. To further stabilize the position of the conical flask, a groove for engaging the bottom end of the conical flask can also be provided on the weighing platform 1.

[0021] This utility model provides an automatic titration device for detecting high-purity hydrochloric acid. In order to avoid the inertial motion of the liquid affecting the mixing effect during rotation, an insertion sleeve connected to the inner cavity can be provided on the outer surface of the conical flask. At this time, the pH sensor 7 is sealed in the insertion sleeve. The position of the pH sensor 7 extending into the conical flask is set to a position other than the middle of the conical flask. With this design, during the rotation of the conical flask, the detection end of the pH sensor 7 acts as a stirring rod to turbulently stir the solution inside, improving the mixing effect. There is no need to set an additional stirring rod, thus realizing rapid mixing and detection of the solution.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic titration device for detecting high-purity hydrochloric acid, characterized in that, It includes a weighing platform (1), a mixing reactor (2), a support frame (3), a Roots blower (5), a controller (8), and a pH sensor (7); The mixing reactor (2) is placed on the weighing platform (1), and a titration container (4) is placed on the support (3). The titration container (4) is provided with a burette opening pointing to the opening of the mixing reactor (2). The titration container (4) is connected to the Roots blower (5) through a connecting pipe (6). The detection end of the pH sensor (7) is located inside the mixing reactor (2). The pH sensor (7), the Roots blower (5), and the weighing platform (1) are all electrically connected to the controller (8).

2. The automatic titration device for detecting high-purity hydrochloric acid according to claim 1, characterized by The drive shaft of the blower rotor of the Roots blower (5) is connected to the drive shaft through a reducer.

3. The automatic titration device for detecting high-purity hydrochloric acid according to claim 1, characterized by It also includes a rotary table (9) and a drive device (10) for driving the rotary table (9) to rotate, wherein the weighing platform (1) is disposed on the rotary table (9) and the drive device (10) is electrically connected to the controller (8).

4. The automatic titration device for detecting high-purity hydrochloric acid according to claim 3, characterized by The mixing reactor (2) is a conical flask, and the rotating platform (9) is provided with a fixing device for fixing the conical flask so that the opening of the conical flask is always located at the position of the rotation axis of the rotating platform (9).

5. The automatic titration device for detecting high-purity hydrochloric acid according to claim 4, characterized by The fixing device includes fixing blocks (11) arranged in a circular array around the rotating table (9). Each fixing block (11) is slidably provided with a slide rod (12). The end of the slide rod (12) is provided with a clamping block (13) for matching the curvature of the conical bottle surface. A spring (14) is provided between the clamping block (13) and the corresponding fixing block (11).

6. The automatic titration device for detecting high-purity hydrochloric acid according to claim 5, characterized by The weighing platform (1) is provided with a groove for engaging the bottom of the conical bottle.

7. The automatic titration device for detecting high-purity hydrochloric acid according to claim 5, characterized by The outer surface of the conical flask is provided with a plug sleeve that communicates with the inner cavity. The pH sensor (7) is sealed in the plug sleeve. The position where the pH sensor (7) extends into the conical flask is not the middle part of the conical flask.

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