Sulfur dioxide detection and analysis device

Abstract

The utility model discloses a sulfur dioxide detection and analysis device which comprises a sample tank, the top of the sample tank is connected with an injection pump through a first guide pipe, the output end of the injection pump is connected with a reaction barrel through a second guide pipe, and the top of the reaction barrel is connected with the output end of a metering pump through a third guide pipe. The input end of the metering pump is connected with a titration solution tank through a fourth guide pipe, the top of the reaction barrel is connected with the output end of a first self-priming pump through a fifth guide pipe, and the input end of the first self-priming pump is connected with a pure water tank through a sixth guide pipe. After a gas sample containing sulfur dioxide is mixed with pure water to generate a solution, titration is carried out through a titrating solution and the mixed solution, so that the content of sulfurous acid can be intuitively obtained conveniently according to the color change of the solution after the titrating solution is dripped, and a gas sample which is not easy to measure is conveniently converted into a liquid solution sample which is convenient to measure; therefore, the content of sulfur dioxide can be conveniently measured.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfur dioxide detection and analysis devices, specifically a sulfur dioxide detection and analysis device. Background Technology

[0002] Traditional methods for detecting sulfur dioxide typically employ electronic devices for speed. However, these devices are susceptible to various interference factors, leading to errors in the results. Reagent-based experiments are cumbersome and not readily automated for rapid sulfur dioxide detection. Furthermore, the process is not readily visualized, hindering the improvement of test accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a sulfur dioxide detection and analysis device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A sulfur dioxide detection and analysis device includes a sample container, the top of which is connected to an injection pump via a first conduit, the output end of which is connected to a reaction vessel via a second conduit, the top of which is connected to the output end of a metering pump via a third conduit, the input end of which is connected to a titrant tank via a fourth conduit, the top of which is connected to the output end of a first self-priming pump via a fifth conduit, and the input end of the first self-priming pump is connected to a pure water tank via a sixth conduit.

[0006] In a preferred embodiment of this utility model, a first check valve is fixedly installed on the outer wall of the first conduit, and a second check valve is fixedly installed on the outer wall of the second conduit.

[0007] In a preferred embodiment of this utility model, a servo motor is fixedly installed on the bottom outer wall of the reaction vessel, and a stirring blade is fixedly installed on the outer wall of the output shaft of the servo motor. The stirring blade is used to mix and stir the sample, water and titrant.

[0008] In a preferred embodiment of this utility model, the bottom of the reaction tank is connected to the input end of the second self-priming pump via a seventh conduit, the output end of the second self-priming pump is fixedly connected to the waste tank, and a solenoid valve is fixedly installed on the outer wall of the seventh conduit.

[0009] In a preferred embodiment of this utility model, a video monitor is fixedly installed in front of the reaction vessel, and a camera is provided on the outer wall of the video monitor. The injection pump, the first self-priming pump, the metering pump, the reaction vessel, the second self-priming pump, and the video monitor are all connected to the controller via signal lines.

[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0011] 1. By mixing a gaseous sample containing sulfur dioxide with pure water to produce a solution, and then titrating the solution with a titrant, the content of sulfurous acid can be directly determined by observing the color change of the solution after adding the titrant. This method facilitates the conversion of a gaseous sample that is difficult to measure into a liquid solution sample that is easy to measure, thereby achieving the purpose of conveniently measuring the content of sulfur dioxide.

[0012] 2. By installing a second self-priming pump and a seventh conduit connected to the bottom of the reaction tank, the waste liquid can be quickly and automatically recovered after testing and detection. Simultaneously, the reaction tank can be self-cleaned by separately supplying pure water to its interior and by driving the agitator blades, facilitating reuse and improving the equipment's practicality. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0014] Figure 1 This is a schematic diagram of the main structure of a sulfur dioxide detection and analysis device;

[0015] Figure 2 A top view schematic diagram of a sulfur dioxide detection and analysis device;

[0016] Figure 3 This is a schematic diagram of the rear view structure in a sulfur dioxide detection and analysis device.

[0017] Figure 4 This is a schematic diagram of the stirrer structure in a sulfur dioxide detection and analysis device.

[0018] In the diagram: Sample container 1, First conduit 2, First check valve 3, Injection pump 4, Second conduit 5, Second check valve 6, Reaction vessel 7, Servo motor 71, Pure water tank 8, Sixth conduit 9, First self-priming pump 10, Fifth conduit 11, Titration tank 12, Fourth conduit 13, Metering pump 14, Seventh conduit 15, Second self-priming pump 16, Waste bin 17, Video monitor 18, Controller 19, Solenoid valve 20, Third conduit 21. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1: As Figure 1 and 2 The sample container 1 is connected to a syringe pump 4 via a first conduit 2 at its top. The output of syringe pump 4 is connected to a reaction vessel 7 via a second conduit 5 at its top. The output of metering pump 14 is connected to the top of reaction vessel 7 via a third conduit 21 at its top. The input of metering pump 14 is connected to a titration container 12 via a fourth conduit 13 at its top. The output of a first self-priming pump 10 is connected to the top of reaction vessel 7 via a fifth conduit 11 at its top. The input of the first self-priming pump 10 is connected to a pure water container 8 via a sixth conduit 9 at its top.

[0021] The specific application scenario of this embodiment is as follows: After mixing a gas sample containing sulfur dioxide with pure water to generate a solution, the solution is titrated with a titrant. The color change of the solution after adding the titrant allows for a direct and intuitive determination of the sulfurous acid content. This facilitates the conversion of a difficult-to-measure gas sample into a easily measurable liquid solution sample, thereby achieving the purpose of conveniently measuring sulfur dioxide content. By setting a second self-priming pump 16 and a seventh conduit 15 connected to the bottom of the reaction tank 7, the waste liquid can be quickly and automatically recovered after the measurement and detection experiment. At the same time, the reaction tank 7 can be self-cleaned by separately supplying pure water to the inside of the reaction tank 7 and driving the stirring blade to rotate, making it convenient for reuse and improving the practicality of the equipment.

[0022] Example 2: As Figure 1 and Figure 2 A first check valve 3 is fixedly installed on the outer wall of the first conduit 2, a second check valve 6 is fixedly installed on the outer wall of the second conduit 5, a servo motor 71 is fixedly installed on the bottom outer wall of the reaction vessel 7, and a stirring blade is fixedly installed on the outer wall of the output shaft of the servo motor 71. The stirring blade is used to mix and stir the sample, water and titrant.

[0023] The specific application scenario of this embodiment is as follows: by turning on the servo motor 71, the stirring blades can be driven by the servo motor 71 to mix the sample containing sulfur dioxide and pure water, thereby producing sulfurous acid. By reacting the titrant with the sulfurous acid, the content of sulfurous acid can be determined by the change in the color of the solution, thereby indirectly obtaining the content of sulfur dioxide.

[0024] Example 3: As Figure 1 and Figure 2The bottom of the reaction tank 7 is connected to the input end of the second self-priming pump 16 through the seventh conduit 15. The output end of the second self-priming pump 16 is fixedly connected to the waste bin 17. The outer wall of the seventh conduit 15 is fixedly installed with a solenoid valve 20. The front of the reaction tank 7 is fixedly installed with a video monitor 18. The outer wall of the video monitor 18 is equipped with a camera. The injection pump 4, the first self-priming pump 10, the metering pump 14, the reaction tank 7, the second self-priming pump 16, and the video monitor 18 are all connected to the controller 19 via signal lines.

[0025] The specific application scenario of this embodiment is as follows: The controller 19 is used to control the operation of the jet pump 4, the first self-priming pump 10, the metering pump 14, the reaction tank 7, the second self-priming pump 16, and the video monitor 18. The controller 19 is a general standard part or a component known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The solenoid valve 20 is used to control the opening and closing of the seventh conduit 15. The second self-priming pump 16 is turned on to discharge the waste liquid in the reaction tank 7 after the measurement is completed. The video monitor 18 is used to record the measurement process on video.

[0026] The working principle of this invention is as follows: When used by those skilled in the art, the sample containing sulfur dioxide in sample container 1 is pumped into reaction vessel 7 by turning on injection pump 4. Then, pure water in pure water container 8 is delivered into reaction vessel 7 by turning on the first self-priming pump 10. The pure water and sulfur dioxide sample are thoroughly mixed by turning on the servo motor 71 to drive the stirring blade. After the sulfur dioxide and pure water are mixed, the metering pump 14 is turned on to draw an appropriate amount of titrant into reaction vessel 7. Simultaneously, the stirring blade is driven by the servo motor 71 to continue to stir the titrant and the mixed solution evenly. Potassium iodide solution can be used as the titrant. The iodine in the potassium iodide solution reacts with the sulfurous acid in reaction vessel 7. At the beginning of the titration, the solution is blue due to the presence of iodine. As the sulfurous acid titrant is added, the iodine is reduced by the sulfurous acid. When the reaction reaches the stoichiometric point, all the iodine in the solution is reduced, and the blue color disappears. By observing the change in solution color, the titration endpoint can be accurately determined, and the sulfur dioxide content in the sample can be calculated from the amount of sulfurous acid. The controller 19 controls the operation of the injection pump 4, the first self-priming pump 10, the metering pump 14, the reaction vessel 7, the second self-priming pump 16, and the video monitor 18.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sulfur dioxide detection and analysis device, comprising a sample container (1), wherein the top of the sample container (1) is connected to an injection pump (4) via a first conduit (2), and the output end of the injection pump (4) is connected to a reaction vessel (7) via a second conduit (5), characterized in that, The top of the reaction tank (7) is connected to the output end of the metering pump (14) via the third conduit (21). The input end of the metering pump (14) is connected to the titration tank (12) via the fourth conduit (13). The top of the reaction tank (7) is connected to the output end of the first self-priming pump (10) via the fifth conduit (11). The input end of the first self-priming pump (10) is connected to the pure water tank (8) via the sixth conduit (9).

2. The sulfur dioxide detection and analysis device according to claim 1, characterized in that, A first check valve (3) is fixedly installed on the outer wall of the first conduit (2), and a second check valve (6) is fixedly installed on the outer wall of the second conduit (5).

3. The sulfur dioxide detection and analysis device according to claim 2, characterized in that, A servo motor (71) is fixedly installed on the bottom outer wall of the reaction vessel (7), and a stirring blade is fixedly installed on the outer wall of the output shaft of the servo motor (71). The stirring blade is used to mix and stir the sample, water and titrant.

4. The sulfur dioxide detection and analysis device according to claim 1, characterized in that, The bottom of the reaction tank (7) is connected to the input end of the second self-priming pump (16) through the seventh conduit (15), and the output end of the second self-priming pump (16) is fixedly connected to the waste tank (17). A solenoid valve (20) is fixedly installed on the outer wall of the seventh conduit (15).

5. The sulfur dioxide detection and analysis device according to claim 4, characterized in that, A video monitor (18) is fixedly installed in front of the reaction tank (7). The outer wall of the video monitor (18) is equipped with a camera. The injection pump (4), the first self-priming pump (10), the metering pump (14), the reaction tank (7), the second self-priming pump (16), and the video monitor (18) are all connected to the controller (19) via signal lines.

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