Infrared auto-induction constant volume device

Abstract

The utility model relates to the technical field of constant volume devices, and discloses an infrared auto-induction constant volume device which comprises a workbench, a fixing pipe is installed at the position, close to the rear side, of the middle of one side of the top of the workbench, a lifting threaded rod penetrates through the middle of the top of the fixing pipe and is in sliding connection with the middle of the top of the fixing pipe, and an installation base is installed at the top of the lifting threaded rod. A telescopic block penetrates through and is slidably connected to the middle of one side wall of the mounting base, and an infrared detector is mounted on one side of the middle of the bottom of the telescopic block. According to the utility model, through the cooperation of the infrared detector and the signal receiver, the automatic induction liquid adding is realized. When the liquid does not reach the scale mark, the liquid adding device continuously works; and once the scale marks are reached, the liquid adding device automatically stops, so that the accuracy and the stability of constant volume are greatly improved, the influence of personal errors on experimental results is reduced, and the sample container can be firmly fixed by arranging the clamping mechanism on the sliding block and utilizing the transmission of the electric steel and the arc-shaped clamping block.

Description

Technical Field

[0001] This utility model relates to the field of volume control device technology, and in particular to an infrared automatic sensing volume control device. Background Technology

[0002] In numerous fields such as chemical analysis, biological experiments, and pharmaceuticals, volume adjustment is a crucial fundamental experimental step, and its accuracy directly affects the reliability of experimental results and the stability of product quality. Accurate volume adjustment ensures that the concentrations of each substance in the reaction system meet experimental or production requirements, thereby guaranteeing the accuracy of experimental data and the consistency of product performance.

[0003] Traditional volume determination techniques primarily rely on manual operation, such as using tools like burettes and pipettes. This method has several drawbacks. First, manual operation is significantly affected by the operator's experience, skill level, and work condition. Different operators may have different judgments about the endpoint, and even the same operator may introduce volume determination errors due to fatigue or other factors during prolonged operation. For example, when performing volume determination on micro-liquids, even the slightest hand tremor during manual titration can cause the added liquid to exceed or fall below the expected mark, thus deviating from the experimental results.

[0004] Secondly, manual volume determination is inefficient. In situations where a large number of samples need to be determined, such as high-throughput experiments in drug development or quality testing in large-scale production, manual operation is time-consuming and labor-intensive, making it difficult to meet the needs of fast and efficient work.

[0005] Furthermore, while some existing automated volumetric filling devices reduce manual operation to some extent, they still have many limitations. The adjustment mechanisms of some devices are not flexible enough to adapt to sample containers of different sizes and diverse volumetric filling requirements. For example, when faced with sample containers of different heights, traditional devices may not be able to quickly and accurately adjust the height of the detection or liquid addition device, leading to difficulties in the volumetric filling operation. At the same time, these devices also have shortcomings in signal sensing and control, making them susceptible to interference from the external environment, resulting in unstable volumetric filling accuracy.

[0006] Therefore, those skilled in the art have provided an infrared automatic sensing volume control device to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of existing technologies by proposing an infrared automatic sensing volume control device. To achieve the above objective, this utility model provides the following technical solution: It includes a workbench, a fixed tube installed on the top side of the workbench near the rear, a lifting threaded rod slidably connected through the top center of the fixed tube, a mounting base installed on the top of the lifting threaded rod, a telescopic block slidably connected through the middle of one side wall of the mounting base, an infrared detector installed on the bottom center of the telescopic block, an installation tube installed on the top rear side of the workbench away from the fixed tube, the fixed tube and the installation tube being mirror images of each other, a signal receiver installed on the middle of the front side wall of the installation tube, a liquid dispenser installed on the top center of the signal receiver, and the signal receiver being electrically connected to the infrared detector.

[0008] Preferably, an angle sensor is added to the lifting and adjusting mechanism to monitor the rotation angle of the internal threaded sleeve in real time. The sensor is linked with the motor through a controller to achieve precise digital control of the height of the lifting threaded rod. The operator can directly input the required height value on the control panel to complete the accurate adjustment.

[0009] Preferably, a driven bevel gear is fixedly installed at the middle position of the outer side wall of the internally threaded sleeve. The input end of the driven bevel gear meshes with a driving bevel gear. The input end of the driving bevel gear is connected to a drive rod. The input end of the drive rod passes through one side wall of the fixed tube and is connected to the input end of the lifting and adjusting mechanism.

[0010] Preferably, a rubber anti-slip pad is added to the inner side of the arc-shaped clamping block of the clamping mechanism, which not only increases the friction with the sample container and prevents slippage during fixation, but also effectively protects the outer wall of the sample container and avoids damage caused by excessive clamping force.

[0011] Preferably, a sample container is installed at the top center of the slider, and clamping mechanisms are installed on both sides of the top center of the slider, with the clamping mechanisms distributed in a mirror image.

[0012] Preferably, the clamping mechanism includes an electric cylinder and an arc-shaped clamping block, the output end of the electric cylinder is fixed to the arc-shaped clamping block, and the electric cylinder is fixed to the base.

[0013] Preferably, in order to reduce the energy consumption and noise of the first motor during operation, variable frequency speed control technology is adopted to automatically adjust the motor speed according to the actual movement requirements of the sample container, so as to achieve energy saving and noise reduction while ensuring positioning accuracy.

[0014] Preferably, a position feedback element, such as a displacement sensor, is added to the control circuit of the first cylinder. When the first cylinder pushes the telescopic block, the displacement sensor feeds back the real-time position information to the control system, so that the operator can accurately grasp the direction adjustment status of the infrared detector at the control terminal and make it convenient to make fine adjustments.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this invention, automatic liquid addition is achieved through the cooperation of an infrared detector and a signal receiver. The dispenser continues to operate until the liquid level reaches the mark; once the mark is reached, the dispenser automatically stops, greatly improving the accuracy and stability of volume determination and reducing the impact of human error on experimental results.

[0017] 2. In this utility model, a lifting and adjusting mechanism is used. Through the coordinated action of the rotating lifting and adjusting components, the drive rod, the active bevel gear, the driven bevel gear, and the internal threaded sleeve, the precise lifting and lowering of the lifting threaded rod is achieved. This allows for accurate adjustment of the infrared detector's height to accommodate sample containers of different sizes and volume requirements. Regarding direction adjustment, the design of the first cylinder pushing the telescopic block, compared to traditional manual rotation or fixed-angle designs, provides a more convenient and faster way to adjust the infrared detector's direction, ensuring stable signal transmission.

[0018] 3. In this invention, a clamping mechanism is installed on the slider, and the sample container can be firmly fixed using an electric cylinder and an arc-shaped clamping block. Simultaneously, the first motor drives the lead screw to move the slider, making the positioning of the sample container more precise and avoiding liquid addition errors caused by container shaking or positional deviation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partial three-dimensional schematic diagram of the rear axle side of this utility model;

[0021] Figure 3 This is a rear-view perspective view of the present invention;

[0022] Figure 4 This is a schematic diagram of the lifting and adjusting mechanism of this utility model.

[0023] Legend: 1. Workbench; 2. Infrared detector; 3. Clamping mechanism; 4. Sample container; 5. Internal threaded sleeve; 6. Fixing tube; 7. Lifting and adjusting mechanism; 8. Lifting threaded rod; 9. First motor; 10. Mounting base; 11. Telescopic block; 12. Mounting tube; 13. Signal receiver; 14. Liquid dispenser; 15. Drive rod; 16. Lead screw; 17. Driving bevel gear; 18. Driven bevel gear; 19. Slider; 20. Second motor; 21. Telescopic rod; 22. Connecting block; 23. Limiting rod; 24. Base; 25. Electric cylinder; 26. Arc-shaped clamping block. 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] Reference Figure 1 — Figure 4This invention relates to an infrared automatic sensing volume control device. The purpose of this invention is to address the shortcomings of existing technologies. To achieve this objective, the invention provides the following technical solution: It includes a workbench 1. A fixed tube 6 is installed on the top side of the workbench 1, near the rear. A lifting threaded rod 8 is slidably connected through the top center of the fixed tube 6. A mounting base 10 is installed on the top of the lifting threaded rod 8. A telescopic block 11 is slidably connected through the middle of one side wall of the mounting base 10. An infrared detector 2 is installed on the bottom center of the telescopic block 11. An installation tube 12 is installed on the top rear side of the workbench 1, away from the fixed tube 6. The fixed tube 6 and the installation tube 12 are mirror images of each other. A signal receiver 13 is installed on the front center of the installation tube 12. A liquid dispenser 14 is installed on the top center of the signal receiver 13. The signal receiver 13 and the infrared detector 2... Furthermore, to improve the stability and anti-interference capability of signal transmission, a signal amplifier and shielding device are added between the infrared detector 2 and the signal receiver 13 to ensure accurate liquid level sensing even in complex environments and achieve stable operation of constant volume operation. A lifting adjustment mechanism 7 is installed in the middle of one side wall of the fixed pipe 6. The lifting adjustment mechanism 7 includes a rotary lifting adjustment component. The output end of the rotary lifting adjustment component passes through the middle of the inner side wall of the fixed pipe 6. An internal threaded sleeve 5 is rotatably connected to the middle of the inner side wall of the fixed pipe 6. The movable end of the lifting threaded rod 8 is threadedly connected to the middle of the inner side wall of the internal threaded sleeve 5. Furthermore, an angle sensor is added to the lifting adjustment mechanism 7 to monitor the rotation angle of the internal threaded sleeve 5 in real time. Through the controller and motor linkage, precise digital control of the height of the lifting threaded rod 8 is achieved. The operator can directly input the required height value on the control panel to complete the accurate adjustment.

[0026] A first cylinder 9 is installed in the middle of one side wall of the mounting base 10. The output end of the first cylinder 9 is connected to the input end of the telescopic block 11. A position feedback element, such as a displacement sensor, is added to the control circuit of the first cylinder 9. When the first cylinder 9 pushes the telescopic block 11, the displacement sensor will feed back the real-time position information to the control system, so that the operator can accurately grasp the direction adjustment status of the infrared detector 2 at the control terminal and make it convenient to make fine adjustments.

[0027] A driven bevel gear 18 is fixedly installed at the middle position of the outer side wall of the internal threaded sleeve 5. The input end of the driven bevel gear 18 meshes with the driving bevel gear 17. The input end of the driving bevel gear 17 is connected to the drive rod 15. The input end of the drive rod 15 passes through one side wall of the fixed tube 6 and is connected to the input end of the lifting adjustment mechanism 7.

[0028] A sliding groove is provided at the center of the top of the workbench 1. A lead screw 16 is rotatably connected to the center of the inner side wall of the sliding groove. A slider 19 is threaded onto the lead screw 16. A sample container 4 is installed at the center of the top of the slider 19. A base 24 is installed at the center of the top of both sides of the slider 19. A clamping mechanism 3 is installed at the center of the top of each base 24. The clamping mechanism 3 includes an electric cylinder 25 and an arc-shaped clamping block 26. The output end of the electric cylinder 25 is fixed to the arc-shaped clamping block 26. The electric cylinder 25 is fixed to the base 24. Furthermore, a rubber anti-slip pad is added to the inner side of the arc-shaped clamping block of the clamping mechanism 3, which not only increases the friction with the sample container 4 and prevents slippage during fixation, but also effectively protects the outer wall of the sample container 4 and avoids damage caused by excessive clamping force. A first motor 20 is installed in the middle of the rear side wall of the workbench 1. The output end of the first motor 20 is connected to the input end of the lead screw 16. In order to reduce the energy consumption and noise of the first motor 20 during operation, variable frequency speed regulation technology is adopted. The speed of the motor is automatically adjusted according to the actual movement requirements of the sample container 4, so as to achieve energy saving and noise reduction while ensuring positioning accuracy.

[0029] Working principle: First, the sample to be diluted is gently placed in the sample container 4 on top of the slider 19 on the worktable 1. The clamping mechanisms 3 on both sides of the sample container 4 begin to function. The electric cylinder 25 acts on the arc-shaped clamp 26, causing the arc-shaped clamp 26 to slowly approach until it is tightly attached to the outer wall of the sample container 4, firmly fixing it and preventing displacement during subsequent operations. Next, the power to the first motor 20 is turned on and started. The motor output shaft drives the lead screw 16 to rotate in the slide groove. The lead screw 16 is threadedly connected to the slider 19. According to the lead screw and nut transmission principle, the slider 19 moves linearly along the slide groove, adjusting the sample container 4 to the appropriate initial liquid addition position.

[0030] When adjusting the height, the operator manipulates the lifting and adjusting mechanism 7, which drives the drive rod 15 to rotate through its internal rotating lifting and adjusting component. The drive rod 15 drives the active bevel gear 17, which, through gear meshing, causes the driven bevel gear 18 to rotate, thereby driving the internal threaded sleeve 5 to rotate. Connecting blocks 22 are installed on one side of the front and rear side walls of the mounting base 10. The connecting blocks 22 are distributed in a mirror image. A telescopic rod 23 is installed at the bottom of each connecting block 22. The bottom of the telescopic rod 23 is installed on the top of the workbench 1 to limit the rotation of the lifting threaded rod 8. The movable end of the lifting threaded rod 8 is threaded to the middle of the inner side wall of the internal threaded sleeve 5. The bottom middle of the internal threaded sleeve 5 is rotatably connected to the limiting rod 23. The limiting rod 23 is installed at the bottom middle of the inner wall of the fixed tube 6 to limit it. The rotation of the internal threaded sleeve 5 is converted into the linear lifting of the lifting threaded rod 8, realizing the height adjustment of the mounting base 10 and the infrared detector 2, ensuring that they are aligned with the volume calibration line of the sample container 4. The direction adjustment is achieved by activating the first cylinder 9, whose body is fixed to the side wall of the mounting base 10. During operation, the piston moves linearly under air pressure, pushing the telescopic block 11 to extend and retract along the through hole, so that the infrared detector 2 is aligned with the appropriate direction, ensuring that the infrared rays can be accurately directed to the signal receiver 13 on the mounting tube 12.

[0031] Once preparations are complete, infrared detector 2 emits infrared light. When the liquid level in sample container 4 is below the graduation mark, the infrared light can successfully reach signal receiver 13. The photoelectric conversion element inside signal receiver 13 converts the light signal into an electrical signal, which is transmitted to the control system of liquid dispenser 14, activating liquid dispenser 14 to add liquid to sample container 4 through the infusion pipeline.

[0032] As the liquid level rises, once it reaches the calibration mark, the liquid blocks the infrared light, and the signal receiver 13 no longer receives a signal and stops sending electrical signals to the control system of the dispenser 14. The control system of the dispenser 14 then stops operating automatically according to a preset program, thus accurately completing the calibration operation. The entire process is highly automated, effectively improving the accuracy and efficiency of calibration.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. An infrared automatic sensing volume control device, characterized in that: The workbench (1) includes a fixed tube (6) installed on the middle of one side of the top of the workbench (1) near the rear side. A lifting threaded rod (8) is slidably connected through the middle of the top of the fixed tube (6). A mounting seat (10) is installed on the top of the lifting threaded rod (8). A telescopic block (11) is slidably connected through the middle of one side wall of the mounting seat (10). An infrared detector (2) is installed on the middle side of the bottom of the telescopic block (11). An installation tube (12) is installed on the rear side of the top of the workbench (1) away from the fixed tube (6). The fixed tube (6) and the installation tube (12) are mirror images of each other. A signal receiver (13) is installed on the middle of the front side wall of the installation tube (12). A liquid dispenser (14) is installed on the middle of the top of the signal receiver (13). The signal receiver (13) is electrically connected to the infrared detector (2).

2. The infrared automatic sensing volume control device according to claim 1, characterized in that: A lifting adjustment mechanism (7) is installed at the middle position of one side wall of the fixed tube (6). The lifting adjustment mechanism (7) includes a rotary lifting adjustment component. The output end of the rotary lifting adjustment component passes through the middle position of the inner side wall of the fixed tube (6). An internal threaded sleeve (5) is rotatably connected to the middle position of the inner side wall of the fixed tube (6). The movable end of the lifting threaded rod (8) is threadedly connected to the middle position of the inner side wall of the internal threaded sleeve (5). A limit rod (23) is rotatably connected to the middle position of the bottom of the internal threaded sleeve (5). The limit rod (23) is installed at the middle position of the bottom of the inner wall of the fixed tube (6).

3. The infrared automatic sensing and volume control device according to claim 2, characterized in that: A driven bevel gear (18) is fixedly installed at the middle position of the outer side wall of the internal threaded sleeve (5). The input end of the driven bevel gear (18) meshes with the driving bevel gear (17). The input end of the driving bevel gear (17) is connected to a drive rod (15). The input end of the drive rod (15) passes through one side wall of the fixed tube (6) and is connected to the input end of the lifting adjustment mechanism (7).

4. The infrared automatic sensing and volume control device according to claim 1, characterized in that: The workbench (1) has a groove at the top center, and a lead screw (16) is rotatably connected to the middle of the inner side wall of the groove. A slider (19) is threaded onto the lead screw (16), and a base (24) is installed at the top center of both sides of the slider (19).

5. The infrared automatic sensing volume control device according to claim 4, characterized in that: A sample container (4) is installed at the top center of the slider (19), and a clamping mechanism (3) is installed at the top center of the base (24). The clamping mechanisms (3) are distributed in a mirror image.

6. The infrared automatic sensing volume control device according to claim 5, characterized in that: The clamping mechanism (3) includes an electric cylinder (25) and an arc-shaped clamping block (26). The output end of the electric cylinder (25) is fixed to the arc-shaped clamping block (26), and the electric cylinder (25) is fixed to the base (24).

7. The infrared automatic sensing and volume control device according to claim 4, characterized in that: A first motor (20) is installed in the middle of the rear side wall of the workbench (1), and the output end of the first motor (20) is connected to the input end of the lead screw (16).

8. The infrared automatic sensing volume control device according to claim 1, characterized in that: A first cylinder (9) is installed in the middle of one side wall of the mounting base (10), and the output end of the first cylinder (9) is connected to the input end of the telescopic block (11).

9. The infrared automatic sensing volume control device according to claim 1, characterized in that: A connecting block (22) is installed on one side of the front and rear side walls of the mounting base (10). The connecting blocks (22) are distributed in a mirror image. A telescopic rod (21) is installed at the bottom of each connecting block (22). The bottom of the telescopic rod (21) is installed on the top of the workbench (1).

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