Detection device and detection method for preparing low-concentration solution

Abstract

The present invention relates to the field of solution detection technology, and in particular to a detection device and method for preparing low-concentration solutions, comprising: a base; a light-shielding container, fixedly mounted on the top of the base via a support frame, the light-shielding container comprising a light-shielding vessel for providing a light-shielding environment during solution preparation, a through-hole being provided at the center of the bottom end of the light-shielding vessel, and a rotating seat being rotatably provided at the through-hole; and a mounting frame, comprising two groups, symmetrically fixedly mounted on both sides of the top of the base, and respectively placed on both sides of the light-shielding vessel. The present invention effectively reduces the phenomenon of polymerization that is easily generated in the existing solution detection process through a combination of multiple methods during the actual preparation of low-concentration acetaldehyde solutions, and during preparation, can also ensure the complete mixing of the solute and the solution to reduce residues, and through the provision of a TVOC sensor, can achieve real-time and effective monitoring of the solution concentration to ensure the actual prepared concentration.

Description

Technical Field

[0001] The present invention relates to the technical field of solution detection, and in particular to a detection device and a detection method for preparing a low-concentration solution. Background Art

[0002] As a multi-purpose organic solution, acetaldehyde solution plays an important role in medical chemical production.

[0003] During solution testing, polymerization can easily occur, affecting the quality of the final solution and adversely affecting its subsequent use. During the preparation process, factors such as light, shear forces from stirring during preparation, and temperature can easily cause polymerization, affecting the entire preparation process. These factors can easily lead to errors in the actual solution concentration, affecting the quality of the final product. To address this issue, we propose a detection device and method for preparing low-concentration solutions. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a detection device and a detection method for preparing a low-concentration solution.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A detection device for preparing a low-concentration solution, comprising:

[0007] base;

[0008] The light-shielding container is fixedly mounted on the top of the base via a support frame. The light-shielding container includes a light-shielding vessel for providing a light-shielding environment during solution preparation, thereby reducing the influence of light on polymerization during solution preparation. A through-hole is provided at the center of the bottom end of the light-shielding vessel, and a rotating seat is rotatably provided at the through-hole to drive the container for configuring the solution to rotate, thereby ensuring effective mixing during solution preparation and reducing the large-scale mechanical stirring during conventional mixing processes.

[0009] There are two sets of plug-in racks, which are symmetrically fixed on both sides of the top of the base and placed on both sides of the light-shielding container. The top of each plug-in rack is equipped with a liquid storage bucket for the solute and solvent during the solution preparation process.

[0010] The liquid inlet assembly is provided with two groups, which are symmetrically arranged on both sides of the top of the light-shielding container, and the liquid inlet assembly is connected to the corresponding liquid storage hopper. The liquid inlet assembly is provided with a liquid guide tube with an adjustable liquid guide speed, which is used to control the introduction speed of the solute and the solution during the solution preparation process to ensure the uniformity of the solution preparation process. The liquid inlet assembly is also provided with an adjustment bracket and a lifting bracket for adjusting the inclination angle of the liquid guide tube, which facilitates the adjustment of the water outlet position of the inner end of the liquid guide tube probing into the light-shielding container. In conjunction with the setting of the rotating seat rotating in the light-shielding container, the solution is spirally introduced into the container, thereby achieving the purpose of homogeneous distribution without high-speed mechanical stirring;

[0011] The adjustment mechanism is arranged at the top of the base, and the adjustment mechanism includes a speed regulating assembly for adjusting the rotation speed of the rotating seat. The adjustment mechanism is also provided with a threaded sleeve linked to the two sets of lifting brackets, which realizes the up and down movement of the adjustment bracket, thereby driving the follow-up adjustment of the inclination angle of the liquid guide tube. In conjunction with the speed regulating assembly, the rotating seat is driven to rotate, thereby achieving homogeneous fusion of the solute and the solvent during the solution preparation process;

[0012] The TVOC sensor is arranged on the lower side of the interior of the light-shielding container and is used to detect the solution concentration in real time during the solution testing process, which facilitates the testing and preparation process.

[0013] As a preferred technical solution of the present application, the adjusting mechanism includes a speed regulating assembly, which includes a shaft rotatably arranged at the top of the base and a driving motor fixedly arranged at the top of the base, the top of the output shaft of the driving motor is coaxially connected to a speed-changing round table I, the top of the shaft is coaxially connected to a speed-changing round table II, and the speed-changing round table II and the speed-changing round table I are centrally symmetrically distributed, and the outer sides of the speed-changing round table I and the speed-changing round table II are sleeved with the same set of transmission belts, the top of the speed-changing round table II is coaxially connected to the rotating seat, and a toggle mechanism for adjusting the up and down movement of the transmission belt is fixedly installed on one side of the bottom end of the light-shielding container. Through the transmission configuration of the transmission belt, the speed-changing round table I and the speed-changing round table II, the speed transmission of the speed-changing round table I and the speed-changing round table II is effectively realized, thereby realizing the adjustable rotation of the rotating seat, which is convenient for driving the container to rotate during the configuration process to achieve homogeneous mixing;

[0014] The toggle mechanism includes a U-shaped bracket fixedly mounted on the bottom end of the base, and limit holes are provided on both side arms of the U-shaped bracket in the vertical direction. An adjusting screw is provided through the center of the bottom end of the U-shaped bracket, and a lifting block is passed through the outer thread of the adjusting screw. The transmission belt is passed through the lifting block, and both sides of the lifting block are connected with a directional mechanism that extends through the limit holes of the arms on both sides of the U-shaped bracket. The directional mechanism includes a contact plate fixedly connected to the side of the lifting block, and contact rods are provided on both sides of the contact plate. The outer side of the contact rod is provided with a spring that contacts the contact plate and the U-shaped bracket, so as to ensure that after the adjusting screw is adjusted, the position of the lifting block is effectively fixed, thereby realizing the speed adjustment of the speed change table II and ensuring the stability after adjustment.

[0015] As a preferred technical solution of the present application, the adjustment mechanism also includes a top plate fixedly installed on the upper side of the light-shielding container, a connecting column fixedly installed on the top of the speed-changing table I, a reciprocating screw coaxially connected to the top of the connecting column, the top of the reciprocating screw is rotatably connected to the bottom end of the top plate, the outer threaded sleeve of the reciprocating screw is provided with a threaded sleeve, and the threaded sleeve is fixedly connected to the two sets of lifting brackets, and a directional rod is also fixedly installed on the side of the threaded sleeve, and a directional groove adapted to the directional rod is provided along the vertical direction on the side of the light-shielding vessel, which effectively ensures that the threaded sleeve can move back and forth in the vertical direction, thereby realizing the vertical position adjustment of the lifting bracket and the adjustment bracket, and providing a guarantee for the liquid point adjustment during the liquid guiding process of the liquid inlet component.

[0016] As a preferred technical solution of the present application, the liquid inlet component includes a fixed bracket fixedly installed on the upper side of the light-shielding vessel, a through-ring fixedly installed on the top of the fixed bracket, a liquid guide tube rotatably arranged on the inner side of the through-ring, and the liquid guide tube and the corresponding liquid storage bucket are connected by a connecting hose, the lifting bracket is fixedly connected to the threaded sleeve, and the top of the lifting bracket is connected to an adjustment bracket for supporting the bottom end of the liquid guide tube, thereby effectively adjusting the inclination angle of the liquid guide tube, so that during the solution preparation process, the landing point of the solution falling from the liquid guide tube constantly changes, and in conjunction with the rotation of the rotating seat controlled by the speed regulation component, the solvent and solute are effectively distributed in a spiral manner after being introduced into the container, ensuring better homogeneous mixing of the two, and avoiding conventional mechanical stirring during the effective solution configuration process, reducing the probability of polymerization.

[0017] As a preferred technical solution of the present application, the liquid guide tube includes a tube body, on which a regulating valve is threaded. The regulating valve is used to adjust the flow space of the tube body and to adjust the falling speed of the solvent and solute inside, so as to better control and regulate the solution configuration process.

[0018] As a preferred technical solution of the present application, the rotating seat includes locking plates arranged on both sides of the through hole at the bottom end of the light-shielding device, and connecting columns are fixedly connected between the locking plates. Friction balls that contact the light-shielding device are installed on the sides of the locking plates that are close to each other, effectively ensuring the stable rotation of the rotating seat while reducing the friction during the rotation process.

[0019] As a preferred technical solution of the present application, an observation window is provided on the side of the light-shielding vessel for observing the internal preparation conditions;

[0020] A heat dissipation component is also installed through the side of the light-shielding vessel to provide a low-temperature environment inside, to eliminate the heat generated during the preparation process, to further reduce the occurrence of polymerization, and to ensure the effective preparation of the solution.

[0021] A detection method for a detection device for preparing a low-concentration solution, based on the above-mentioned detection device for preparing a low-concentration solution, comprises the following steps:

[0022] Step S1, preliminary calculation and measurement: first, the required solvent and solute amount are calculated and measured according to the concentration value of the low-concentration acetaldehyde solution to be configured;

[0023] Step S2, material introduction: all the measured solute is introduced into one set of liquid storage hoppers, part of the measured solvent is introduced into another set of liquid storage hoppers, and the remaining solvent is retained for use;

[0024] Step S3, mixing configuration: During this process, the regulating valves on the two sets of liquid guide tubes are controlled to open the tube bodies, thereby effectively introducing the solvent and solute, and causing the solvent and solute to fall into the mixing container located at the top of the rotating seat. During this process, the speed regulating mechanism is activated to effectively realize the up and down rotation adjustment of the threaded sleeve, thereby driving the up and down adjustment start of the lifting bracket, and then the liquid guide tube is effectively turned up and down under the action of the follow-up adjustment bracket, so that the position where the bottom of the liquid guide tube falls into the water is constantly changing. In conjunction with the setting of the container that rotates with the rotating seat, the landing trajectory of the solvent and solute inside the container is on a spiral line, thereby effectively ensuring uniform mixing of the solvent and solute;

[0025] Step S4, Condition Change: During the configuration process, the speed change assembly on the adjustment mechanism can be adjusted, specifically by rotating the adjustment screw, so that the lifting block can move in the vertical direction under the action of torque and the guidance of the directional mechanism, thereby achieving position adjustment of the transmission belt, so that the contact position of the transmission belt on the speed change round table I and the speed change round table II changes, thereby achieving adjustment of the angular velocity at the contact position between the two, and thus controlling the rotation adjustment of the rotating seat;

[0026] When the conditions change, the heat dissipation component can be activated to achieve internal temperature regulation, thereby effectively eliminating the internal heat during the solution preparation process and avoiding the occurrence of polymerization during the solution preparation process caused by temperature changes;

[0027] Step S5, eliminating residuals: After the final stage of preparation, the solvent and solute in the original liquid storage hopper are mixed, and the remaining unprepared solvent is introduced into the liquid storage hopper originally containing the solute to flush the residual solute so that the solute is completely distributed in the solvent. The solvent is then introduced into the container with the help of the liquid inlet component to ensure the accuracy of the prepared concentration and reduce the residual solvent. The preparation process is thus completed. After the preparation is completed, the solution is removed from the container and poured into a light-shielding container for sealed storage, thereby completing the preparation of the entire low-concentration acetaldehyde solution;

[0028] During the above configuration process, observation can be made at the observation window on the light-shielding vessel to effectively monitor the configuration progress and achieve effective control of the configuration process. During the detection process, the concentration of the internally configured acetaldehyde solution can be monitored in real time through the TVOC sensor, making it easy to control the concentration changes.

[0029] The beneficial effects of the present invention are:

[0030] 1. The light shielding device in the configuration device effectively reduces the light exposure during the configuration process and effectively avoids the polymerization problem that may occur during solution detection;

[0031] 2. The container is self-rotating under the action of the speed regulating assembly and the rotating seat, and the lifting bracket cooperates with the regulating mechanism, and the arrangement of the regulating bracket and the liquid guide tube makes the trajectory of the liquid discharge from the liquid guide tube inside the container present a spiral shape, thereby ensuring effective and uniform mixing of the solvent and the solute. In this process, the speed of the rotating seat and the container can be adjusted, thereby achieving homogeneous mixing of the solution and the solute, and avoiding the occurrence of polymerization caused by the large shear force caused by mechanical stirring in the existing configuration process.

[0032] 3. Through the setting of the heat dissipation component, the heat is effectively eliminated during the configuration process, further reducing the probability of polymerization;

[0033] 4. During the configuration process, the solvent is separated and the latter part of the solvent is used to flush the liquid storage bucket containing the solute, which effectively ensures the accuracy of the actual configuration concentration and reduces the residue;

[0034] 5. During the preparation process, the concentration of the prepared acetaldehyde solution can be detected in real time through the setting of the TVOC sensor, so as to better realize the detection during the preparation process and facilitate the control of the preparation accuracy.

[0035] In summary, in the actual process of preparing low-concentration acetaldehyde solution, the present application effectively reduces the phenomenon of polymerization that is easy to occur in the existing solution detection process through a combination of multiple methods. During the preparation, it can also ensure the complete mixing of the solute and the solution to reduce residues. Through the setting of the TVOC sensor, the solution concentration can be effectively monitored in real time to ensure the actual preparation concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a detection device for preparing a low-concentration solution proposed by the present invention;

[0037] Figure 2 This is a schematic structural diagram from another perspective of a detection device for preparing a low-concentration solution proposed by the present invention;

[0038] Figure 3 This is a schematic structural diagram of a light-shielding container of a detection device for preparing a low-concentration solution proposed by the present invention;

[0039] Figure 4 This is a schematic diagram of the main structure of a rotating seat of a detection device for preparing a low-concentration solution proposed by the present invention;

[0040] Figure 5 This is a schematic structural diagram of an adjustment mechanism of a detection device for preparing a low-concentration solution proposed by the present invention;

[0041] Figure 6 This is a schematic structural diagram of a directional mechanism of a detection device for preparing a low-concentration solution proposed by the present invention;

[0042] Figure 7 This is a schematic structural diagram of a liquid inlet assembly of a detection device for preparing a low-concentration solution proposed by the present invention;

[0043] Figure 8 The present invention provides a schematic cross-sectional structural diagram of a liquid guide tube of a detection device for preparing a low-concentration solution.

[0044] In the figure: 1. Base; 2. Light-shielding container; 21. Light-shielding vessel; 22. Rotating seat; 221. Positioning plate; 222. Connecting column; 223. Friction ball; 3. Insertion rack; 4. Liquid storage hopper; 5. Adjustment mechanism; 51. Shaft; 52. Transmission belt; 53. U-shaped bracket; 54. Lifting block; 55. Adjustment screw; 56. Speed-changing table I; 57. Drive motor; 58. Orientation mechanism; 581. Contact plate ; 582, resistance rod; 583, spring; 59, connecting column; 510, reciprocating screw; 511, threaded sleeve; 512, top plate; 513, speed change table II; 6, heat dissipation component; 7, observation window; 8, liquid inlet component; 81, lifting bracket; 82, adjusting bracket; 83, threading ring; 84, liquid guide tube; 841, tube body; 842, regulating valve; 85, fixed bracket; 9, TVOC sensor. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1-8 , a detection device for preparing a low-concentration solution, comprising:

[0047] Base 1;

[0048] The light-shielding container 2 is fixedly mounted on the top of the base 1 through a support frame. The light-shielding container 2 includes a light-shielding vessel 21 for providing a light-shielding environment during solution preparation, thereby reducing the influence of light on polymerization during solution preparation. A through-hole is provided at the center of the bottom end of the light-shielding vessel 21, and a rotating seat 22 is rotatably provided at the through-hole for driving the container for configuring the solution to rotate, thereby ensuring effective mixing during solution preparation and reducing large-scale mechanical stirring during conventional mixing. The rotating seat 22 includes positioning plates 221 respectively provided on both sides of the through-hole at the bottom end of the light-shielding vessel 21. Connecting columns 222 are fixedly connected between the positioning plates 221. Friction balls 223 that contact the light-shielding vessel 21 are installed on the sides of the positioning plates 221 that are close to each other, thereby effectively ensuring the stable rotation of the rotating seat 22 while reducing the friction during rotation.

[0049] There are two sets of plug-in racks 3, which are symmetrically fixed on both sides of the top of the base 1 and are placed on both sides of the light-shielding container 2. The top of the plug-in racks 3 is inserted with a liquid storage hopper 4 for holding the solute and solvent during the solution preparation process;

[0050] The liquid inlet assembly 8 is provided with two groups, which are symmetrically arranged on both sides of the top of the light-shielding container 2, and the liquid inlet assembly 8 is connected to the corresponding liquid storage hopper 4. The liquid inlet assembly 8 is provided with a liquid guide tube 84 with an adjustable liquid guide speed, which is used to control the introduction speed of the solute and the solution during the solution preparation process to ensure the uniformity of the solution preparation process. The liquid inlet assembly 8 is also provided with an adjustment bracket 82 and a lifting bracket 81 for adjusting the inclination angle of the liquid guide tube 84, which is convenient for adjusting the water outlet position of the inner end of the liquid guide tube 84 probing into the light-shielding container 2. In conjunction with the setting of the rotating seat 22 rotating in the light-shielding container 2, the solution is spirally introduced into the container, thereby achieving the purpose of homogeneous distribution without high-speed mechanical stirring;

[0051] The adjustment mechanism 5 is provided at the top of the base 1 and includes a speed regulating assembly for adjusting the rotation speed of the rotating seat 22. The adjustment mechanism 5 is also provided with a threaded sleeve 511 that is linked to the two sets of lifting brackets 81, thereby achieving the up and down movement of the adjustment brackets 82, thereby driving the follow-up adjustment of the inclination angle of the liquid guide tube 84. The speed regulating assembly drives the rotating seat 22 to rotate, thereby achieving homogeneous fusion of the solute and the solvent during the solution preparation process.

[0052] An observation window 7 is provided on the side of the light shielding container 21 for observing the internal preparation conditions;

[0053] A heat dissipation component 6 is also installed through the side of the light shielding container 21 to provide a low-temperature environment inside, to eliminate the heat generated during the preparation process, further reduce the occurrence of polymerization, and ensure the effective preparation of the solution;

[0054] The TVOC sensor 9 is arranged on the lower side of the interior of the light-shielding container 2 and is used to detect the concentration of the solution in real time during the solution detection process, which facilitates the detection and preparation process.

[0055] Reference Figure 5-Figure 6 The adjusting mechanism 5 includes a speed regulating component, which includes a shaft 51 rotatably arranged at the top of the base 1 and a driving motor 57 fixedly arranged at the top of the base 1. The top of the output shaft of the driving motor 57 is coaxially connected with a speed-changing round table I 56, and the top of the shaft 51 is coaxially connected with a speed-changing round table II 513, and the speed-changing round table II 513 and the speed-changing round table I 56 are symmetrically distributed with the center. The outer sides of the speed-changing round table I 56 and the speed-changing round table II 513 are sleeved with the same set of transmission belts 52, and the top of the speed-changing round table II 513 is coaxially connected to the rotating seat 22. A toggle mechanism for adjusting the up and down movement of the transmission belt 52 is fixedly installed on one side of the bottom end of the light-shielding container 2. Through the transmission configuration of the transmission belt 52, the speed-changing round table I 56 and the speed-changing round table II 513, the speed transmission of the speed-changing round table I 56 and the speed-changing round table II 513 is effectively realized, thereby realizing the adjustable rotation speed of the rotating seat 22, which is convenient for driving the container to rotate during the configuration process to achieve homogeneous mixing;

[0056] The toggle mechanism includes a U-shaped bracket 53 fixedly mounted on the bottom end of the base 1, and limit holes are provided on the two side arms of the U-shaped bracket 53 in the vertical direction. An adjusting screw 55 is provided at the center of the bottom end of the U-shaped bracket 53, and a lifting block 54 is threaded on the outer side of the adjusting screw 55. The transmission belt 52 is passed through the lifting block 54, and both sides of the lifting block 54 are connected with a directional mechanism 58 that extends through the limit holes of the two side arms of the U-shaped bracket 53. The directional mechanism 58 includes a contact plate 581 fixedly connected to the side of the lifting block 54, and a contact rod 582 is provided on both sides of the contact plate 581. The outer side of the contact rod 582 is provided with a spring 583 that contacts the contact plate 581 and the U-shaped bracket 53, so as to ensure that after the adjusting screw 55 is adjusted, the position of the lifting block 54 is effectively fixed, thereby realizing the speed adjustment of the speed change round table II 513 and ensuring the stability after adjustment.

[0057] The adjusting mechanism 5 also includes a top plate 512 fixedly mounted on the upper side of the light-shielding container 2, a connecting column 59 fixedly mounted on the top of the speed-changing table Ⅰ56, and a reciprocating screw 510 coaxially connected to the top of the connecting column 59. The top of the reciprocating screw 510 is rotatably connected to the bottom end of the top plate 512, and the outer thread of the reciprocating screw 510 is provided with a threaded sleeve 511, and the threaded sleeve 511 is fixedly connected to the two sets of lifting brackets 81. A directional rod is also fixedly mounted on the side of the threaded sleeve 511, and a directional groove adapted to the directional rod is provided along the vertical direction on the side of the light-shielding vessel 21, which effectively ensures that the threaded sleeve 511 can move back and forth in the vertical direction, thereby realizing the vertical position adjustment of the lifting bracket 81 and the adjustment bracket 82, and providing a guarantee for the liquid inlet component 8 to adjust the landing point during the liquid guiding process.

[0058] Reference Figure 7 The liquid inlet component 8 includes a fixed bracket 85 fixedly mounted on the upper side of the light-shielding vessel 21, and a through-ring 83 is fixedly mounted on the top of the fixed bracket 85. A liquid guide tube 84 is rotatably arranged on the inner side of the through-ring 83, and the liquid guide tube 84 is connected to the corresponding liquid storage bucket 4 by a connecting hose. The lifting bracket 81 is fixedly connected to the threaded sleeve 511, and the top of the lifting bracket 81 is connected to an adjusting bracket 82 for supporting the bottom end of the liquid guide tube 84, thereby effectively adjusting the inclination angle of the liquid guide tube 84, so that during the solution preparation process, the landing point of the solution falling from the liquid guide tube 84 is constantly changing, and the rotation of the rotating seat 22 controlled by the speed regulating component is effectively realized, so that the solvent and the solute are effectively distributed in a spiral manner after being introduced into the container, ensuring that the two are better mixed homogeneously, and realizing the effective solution configuration process, avoiding conventional mechanical stirring and reducing the probability of polymerization.

[0059] Reference Figure 8The liquid guide tube 84 includes a tube body 841, and a regulating valve 842 is threaded through the tube body 841. The regulating valve 842 is used to adjust the flow space of the tube body 841 and to adjust the falling speed of the solvent and solute inside, so as to better control and regulate the solution configuration process.

[0060] A detection method for a detection device for preparing a low-concentration solution, based on the above-mentioned detection device for preparing a low-concentration solution, comprises the following steps:

[0061] Step S1, preliminary calculation and measurement: first, the required solvent and solute amount are calculated and measured according to the concentration value of the low-concentration acetaldehyde solution to be configured;

[0062] Step S2, material introduction: all the measured solute is introduced into one set of liquid storage hoppers 4, and part of the measured solvent is introduced into another set of liquid storage hoppers 4, and the remaining solvent is retained for use;

[0063] Step S3, mixing configuration: During this process, the regulating valves 842 on the two sets of liquid guide tubes 84 are controlled to open the tube body 841, thereby effectively introducing the solvent and solute, and causing the solvent and solute to fall into the mixing container located at the top of the rotating seat 22. In this process, the speed regulating mechanism is activated to effectively realize the up and down rotation adjustment of the threaded sleeve 511, thereby driving the up and down adjustment start of the lifting bracket 81, and then the liquid guide tube 84 is effectively turned up and down under the action of the follow-up adjustment bracket 82, so that the position where the bottom end of the liquid guide tube 84 falls into the water is constantly changing. In conjunction with the setting of the container rotating with the rotating seat 22, the landing trajectory of the solvent and solute inside the container is on a spiral line, thereby effectively ensuring uniform mixing of the solvent and solute;

[0064] Step S4, Condition Change: During the configuration process, the speed change assembly on the adjustment mechanism 5 can be adjusted, specifically by rotating the adjustment screw 55, so that the lifting block 54 can be moved in the vertical direction under the action of torque and the guidance of the orientation mechanism 58, thereby achieving position adjustment of the transmission belt 52, so that the contact position of the transmission belt 52 on the speed change round table I 56 and the speed change round table II 513 is changed, thereby achieving the adjustment of the angular velocity at the contact position between the two, thereby controlling the rotation adjustment of the rotating base 22;

[0065] During the process of changing conditions, the heat dissipation component 6 can be activated to achieve internal temperature regulation, thereby effectively eliminating the internal heat during the solution preparation process and avoiding the occurrence of polymerization during the solution preparation process caused by temperature changes;

[0066] Step S5, eliminating residuals: After the final stage of preparation, the solvent and solute in the original liquid storage hopper 4 are mixed, and the remaining unprepared solvent is introduced into the liquid storage hopper 4 originally containing the solute to flush the residual solute so that the solute is completely distributed inside the solvent. The solvent is then introduced into the container with the help of the liquid inlet component 8 to ensure the accuracy of the prepared concentration and reduce the residual solvent. The preparation process is completed. After the preparation is completed, the solution is taken out of the container and poured into a light-shielding container for sealed storage, thereby completing the preparation of the entire low-concentration acetaldehyde solution;

[0067] During the above configuration process, observation can be made at the observation window 7 on the light-shielding vessel 21 to effectively monitor the configuration process and achieve effective control of the configuration process. During the detection process, the concentration of the internally configured acetaldehyde solution is monitored in real time through the TVOC sensor 9, which facilitates the control of concentration changes.

[0068] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0069] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A detection device for preparing low-concentration solutions, characterized in that: include: Base (1); A light-shielding container (2) is fixedly mounted on the top of the base (1) via a support frame. The light-shielding container (2) includes a light-shielding vessel (21) for providing a light-shielding environment during solution preparation. A through hole is provided at the center of the bottom end of the light-shielding vessel (21), and a rotating seat (22) is rotatably provided at the through hole. The inserting rack (3) is provided with two groups, which are symmetrically fixedly installed on both sides of the top of the base (1) and are respectively placed on both sides of the light-shielding container (2). The top of each inserting rack (3) is provided with a liquid storage bucket (4) for storing solutes and solvents during the solution preparation process; The liquid inlet assembly (8) is provided with two groups, which are symmetrically arranged on both sides of the top of the light-shielding container (2), and the liquid inlet assembly (8) is connected to the corresponding liquid storage bucket (4). The liquid inlet assembly (8) is provided with a liquid guide tube (84) with an adjustable liquid guide speed. The liquid inlet assembly (8) is also provided with an adjustment bracket (82) and a lifting bracket (81) for adjusting the inclination angle of the liquid guide tube (84), so as to facilitate adjustment of the water outlet position of the liquid guide tube (84) at one end of the inner side of the light-shielding container (2). In conjunction with the setting of the rotating seat (22) rotating in the light-shielding container (2), the solution is spirally introduced into the container, thereby achieving the purpose of homogeneous distribution without high-speed mechanical stirring. An adjusting mechanism (5) is provided at the top of the base (1), and the adjusting mechanism (5) includes a speed regulating assembly for adjusting the rotation speed of the rotating seat (22), and the adjusting mechanism (5) is further provided with a threaded sleeve (511) linked to the two sets of lifting brackets (81); A TVOC sensor (9) is arranged on the lower side of the interior of the light-shielding container (2); The regulating mechanism (5) includes a speed regulating assembly, which includes a shaft (51) rotatably arranged at the top of the base (1) and a driving motor (57) fixedly arranged at the top of the base (1), the top of the output shaft of the driving motor (57) is coaxially connected to a speed-changing round table I (56), the top of the shaft (51) is coaxially connected to a speed-changing round table II (513), and the speed-changing round table II (513) and the speed-changing round table I (56) are centrally symmetrically distributed, the outer sides of the speed-changing round table I (56) and the speed-changing round table II (513) are provided with a same set of transmission belts (52), the top of the speed-changing round table II (513) is coaxially connected to the rotating seat (22), and a toggle mechanism for adjusting the transmission belt (52) to move up and down is fixedly installed on one side of the bottom end of the light-shielding container (2); The toggle mechanism includes a U-shaped bracket (53) fixedly mounted on the bottom end of the base (1), and limit holes are provided on the support arms on both sides of the U-shaped bracket (53) in the vertical direction. An adjusting screw (55) is provided through the center of the bottom end of the U-shaped bracket (53), and a lifting block (54) is provided through the outer thread of the adjusting screw (55). The transmission belt (52) is provided on the lifting block (54), and both sides of the lifting block (54) are connected with a directional mechanism (58) extending through the limit holes of the support arms on both sides of the U-shaped bracket (53). The directional mechanism (58) includes a contact plate (581) fixedly connected to the side of the lifting block (54), and a contact rod (582) is provided through both sides of the contact plate (581). The outer side of the contact rod (582) is provided with a spring (583) that contacts the contact plate (581) and the U-shaped bracket (53); The adjustment mechanism (5) further comprises a top plate (512) fixedly mounted on the upper side of the light-shielding container (2); a connecting column (59) is fixedly mounted on the top of the speed-changing table I (56); a reciprocating screw (510) is coaxially connected to the top of the connecting column (59); the top of the reciprocating screw (510) is rotatably connected to the bottom of the top plate (512); a threaded sleeve (511) is provided on the outer thread of the reciprocating screw (510), and the threaded sleeve (511) is fixedly connected to the two sets of lifting brackets (81); a directional rod is also fixedly mounted on the side of the threaded sleeve (511), and a directional groove adapted to the directional rod is provided on the side of the light-shielding container (21) in the vertical direction.

2. A detection device for preparing a low-concentration solution according to claim 1, characterized in that: The liquid inlet assembly (8) includes a fixed bracket (85) fixedly mounted on the upper side of the light-shielding vessel (21), a penetration ring (83) fixedly mounted on the top of the fixed bracket (85), a liquid guide tube (84) rotatably arranged on the inner side of the penetration ring (83), and a connecting hose is used to connect the liquid guide tube (84) to the corresponding liquid storage hopper (4), a lifting bracket (81) is fixedly connected to the threaded sleeve (511), and an adjusting bracket (82) is connected to the top of the lifting bracket (81) to support the bottom end of the liquid guide tube (84).

3. A detection device for preparing a low-concentration solution according to claim 2, characterized in that: The liquid guide tube (84) comprises a tube body (841), and a regulating valve (842) is threadedly provided on the tube body (841). The regulating valve (842) is used to adjust the flow space of the tube body (841).

4. The detection device for preparing a low-concentration solution according to claim 1, characterized in that: The rotating seat (22) comprises positioning plates (221) respectively arranged on both sides of the through hole at the bottom end of the light-shielding vessel (21), a connecting column (222) being fixedly connected between the positioning plates (221), and friction balls (223) that come into contact with the light-shielding vessel (21) being installed on the sides of the positioning plates (221) that are close to each other.

5. The detection device for preparing a low-concentration solution according to claim 1, characterized in that: An observation window (7) is provided on the side of the light-shielding vessel (21); A heat dissipation component (6) is also installed in a penetrating manner on the side of the light-shielding vessel (21).

6. A detection method for a low-concentration solution detection device according to any one of claims 1 to 5, characterized in that: The detection method is based on the above-mentioned detection device for preparing low-concentration solution and includes the following steps: Step S1, preliminary calculation and measurement: first, the required solvent and solute amount are calculated and measured according to the concentration value of the low-concentration acetaldehyde solution to be configured; Step S2, material introduction: all the measured solute is introduced into one set of liquid storage hoppers (4), part of the measured solvent is introduced into another set of liquid storage hoppers (4), and the remaining solvent is retained for use; Step S3, mixing configuration: In this process, by controlling the regulating valves (842) on the two sets of liquid guide tubes (84), the tube body (841) is opened, thereby effectively introducing the solvent and the solute, so that the solvent and the solute fall into the mixing container located at the top of the rotating seat (22), and in this process, by starting the speed regulating mechanism, the threaded sleeve (511) is effectively rotated up and down, thereby driving the lifting bracket (81) to start the up and down adjustment, thereby making the liquid guide tube (84) under the action of the follow-up adjustment bracket (82) effectively realize the up and down flipping back and forth, so that the position where the bottom end of the liquid guide tube (84) falls into the water is constantly changing, and with the setting of the container that rotates with the rotating seat (22), the landing trajectory of the solvent and the solute inside the container is on the spiral line, thereby effectively ensuring the uniform mixing of the solvent and the solute; Step S4, condition change: During the configuration process, the speed change assembly on the adjustment mechanism (5) can be adjusted, specifically by rotating the adjustment screw (55), so that the lifting block (54) can be moved in the vertical direction under the action of the torque and the guiding action of the directional mechanism (58), thereby achieving position adjustment of the transmission belt (52), so that the contact position of the transmission belt (52) on the speed change round table I (56) and the speed change round table II (513) changes, thereby achieving the adjustment of the angular velocity at the contact position between the two, thereby controlling the rotation adjustment of the rotating seat (22); During the process of condition change, the heat dissipation component (6) can be activated to achieve internal temperature regulation, thereby effectively achieving internal heat removal during the solution preparation process and avoiding the occurrence of polymerization during the solution preparation process caused by temperature changes; Step S5, eliminating the residue: After the final stage of the configuration, the solvent and solute in the original liquid storage bucket (4) are mixed, and the remaining unconfigured solvent is introduced into the liquid storage bucket (4) originally containing the solute to flush the residual solute so that the solute is completely distributed inside the solvent. The solute is then introduced into the container with the help of the liquid inlet component (8) to ensure the accuracy of the configured concentration and reduce the residual solvent. The configuration process is completed. After the configuration is completed, the solution is taken out of the container and poured into a light-shielding container for sealed storage, thereby completing the configuration of the entire low-concentration acetaldehyde solution; During the configuration process, observation can be made at the observation window (7) on the light-shielding vessel (21), effectively monitoring the configuration process and achieving effective control of the configuration process. During the detection process, the concentration of the acetaldehyde solution configured inside can be monitored in real time through the TVOC sensor (9), making it easy to control the concentration change.

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