A test tube rotating colorimeter

Abstract

The utility model relates to the field of analytical detection technology especially relates to a test tube rotary colorimetric device, the test tube rotary colorimetric device includes workbench, support frame, light detection mechanism, clamping rotary mechanism and test tube chucking mechanism, the outside of workbench is fixedly connected with a plurality of support frames, the workbench below is equipped with light detection mechanism, the light detection mechanism includes depositing shell, detection test tube, transmitter and receiver, the lower surface of workbench is fixedly connected with depositing shell, and the outside of depositing shell is equipped with the light -transmitting groove of penetration, and the depositing shell is placed with detection test tube, the utility model discloses a rotary mechanism driven by stepping motor, cooperation photoelectric signal acquisition, and the screening and average processing algorithm of the collected data are combined, effectively eliminate the interference of the local scratch and defect on the detection test tube wall to the static measurement result, improve the reliability of colorimetric analysis data and the accuracy of final result.

Description

Technical Field

[0001] This utility model relates to the field of analytical testing technology, and in particular to a test tube rotation colorimetric device. Background Technology

[0002] Colorimetric analysis, as a commonly used detection method, relies heavily on the stability of the detection beam as it penetrates the sample. In practical applications, test tubes are often reused, and prolonged wiping, cleaning, or high-temperature digestion inevitably leave scratches, marks, or uneven areas on the tube walls that cannot be removed.

[0003] These localized defects on the test tube walls are a major source of interference with the accuracy of colorimetric analysis. In traditional static detection mode, when the incident light from the light source happens to pass through these defective areas, it can cause abnormal abrupt changes or deviations in the emitted light signal, resulting in distorted or unreliable final analytical results. Although operators can replace the test tubes, this increases the detection cost, and wear and tear issues will reappear after prolonged operation.

[0004] Therefore, it is necessary to provide a new test tube rotation colorimetric device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a test tube rotation colorimetric device.

[0006] The test tube rotation colorimetric device provided by this utility model includes: a workbench, a support frame, a light detection mechanism, a clamping and rotating mechanism, and a test tube clamping mechanism. Multiple support frames are fixedly connected to the outer side of the workbench. A light detection mechanism is located below the workbench, comprising a storage shell, test tubes, a transmitter, and a receiver. The storage shell is fixedly connected to the lower surface of the workbench. A transparent light-transmitting groove is opened on the outer side of the storage shell, and test tubes are placed inside the storage shell. Receivers and transmitters are respectively located on the left and right sides of the storage shell. A light source is installed on the transmitter, and a signal connector is installed on the receiver. A clamping and rotating mechanism is provided on the workbench, comprising a test tube limiting sleeve and a driven pulley. The test tube limiting sleeve is rotatably connected to the upper surface of the workbench. A placement groove is opened on the upper surface of the test tube limiting sleeve, through which the test tubes pass and are placed inside the storage shell. A driven pulley is fixedly connected to the outer surface of the test tube limiting sleeve, driven by a transmission mechanism. A test tube clamping mechanism is located inside the test tube limiting sleeve.

[0007] Preferably, the transmission drive mechanism includes a stepper motor, a drive pulley, and a traction belt. The stepper motor is fixedly installed on the lower surface of the worktable. The output end of the stepper motor passes through a corresponding slot on the worktable and is fixedly connected to the drive pulley via a coupling. The drive pulley is connected to the driven pulley via the traction belt.

[0008] Preferably, both the outer surface of the support frame and the upper surface of the worktable are fixedly connected with L-shaped limiting plates, the openings of the two limiting plates are arranged opposite each other, and the driven pulley is located between the two limiting plates.

[0009] Preferably, the upper surface of the test tube is threaded with a matching test tube cap.

[0010] Preferably, the test tube clamping mechanism includes a storage box, a spring, and an elastic ball. The inner wall of the placement groove is provided with a pressing groove. The storage box with an outer opening is fixedly connected in the pressing groove. An elastic ball is placed in the storage box, and a spring connects the elastic ball to the inner wall of the pressing groove.

[0011] Preferably, there are three pressing grooves, and the three pressing grooves are evenly distributed in a circular pattern within the placement groove.

[0012] Compared with related technologies, the test tube rotation colorimetric device provided by this utility model has the following beneficial effects: 1. This utility model effectively eliminates the interference of local scratches and defects on the test tube wall on static measurement results by adopting a stepper motor driven rotation mechanism, combined with photoelectric signal acquisition, and combined with the filtering and averaging processing algorithm of the acquired data, thereby improving the reliability of colorimetric analysis data and the accuracy of the final results.

[0013] 2. This invention, through the setting of a three-point flexible clamping mechanism, ensures that the test tube maintains a stable central positioning during rotation, avoiding signal instability caused by radial sway. Simultaneously, the threaded connection to the test tube cap effectively prevents sample liquid from splashing and evaporating during rotation, ensuring sample integrity and continuous measurement stability. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the test tube rotation colorimetric device provided by this utility model; Figure 2 This is an enlarged structural schematic diagram of the clamping and rotating mechanism in this utility model; Figure 3 This is a schematic diagram of the test tube clamping mechanism in this utility model.

[0015] The following are the labels in the diagram: 1. Workbench; 2. Support frame; 3. Stepper motor; 4. Receiver; 5. Signal connector; 6. Storage shell; 7. Light transmission groove; 8. Transmitter; 9. Emitting light source; 10. Test tube limiting sleeve; 11. Test tube cap; 12. Test tube for inspection; 13. Placement groove; 14. Driven pulley; 15. Limiting plate; 16. Driven pulley; 17. Traction belt; 18. Storage box; 19. Spring; 20. Pressing groove; 21. Elastic ball. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0018] Please see Figures 1 to 3 The present invention provides a test tube rotation colorimetric device, which includes: a workbench 1, a support frame 2, a light detection mechanism, a clamping and rotating mechanism, and a test tube clamping mechanism.

[0019] Multiple support frames 2 are fixedly connected to the outer side of the workbench 1. A light detection mechanism is provided below the workbench 1. The light detection mechanism includes a storage shell 6, a test tube 12, a transmitter 8, and a receiver 4. The storage shell 6 is fixedly connected to the lower surface of the workbench 1. A transparent light-transmitting groove 7 is opened on the outer side of the storage shell 6, and the test tube 12 is placed inside the storage shell 6. The upper surface of the test tube 12 is threaded with a matching test tube cap 11. The receiver 4 and the transmitter 8 are respectively provided on the left and right sides of the storage shell 6. A light source 9 is installed on the transmitter 8, and a signal connector 5 is installed on the receiver 4. A clamping and rotating mechanism is provided on the workbench 1. The clamping and rotating mechanism includes a test tube limiting sleeve 10 and a driven pulley 14. The test tube limiting sleeve 10 is rotatably connected to the upper surface of the workbench 1. The test tube limiting sleeve 10 has a placement groove 13 on its upper surface. The test tube 12 passes through the placement groove 13 and is placed in the storage shell 6. A driven pulley 14 is fixedly connected to the outer surface of the test tube limiting sleeve 10. The driven pulley 14 is driven by a transmission mechanism, which includes a stepper motor 3, a drive pulley 16, and a traction belt 17. A stepper motor 3 is fixedly installed on the lower surface of the workbench 1. The output end of the stepper motor 3 passes through a corresponding slot on the workbench 1 and is fixedly connected to the drive pulley 16 through a coupling. The drive pulley 16 is connected to the driven pulley 14 through the traction belt 17. An L-shaped limiting plate 15 is fixedly connected to the outer surface of the support frame 2 and the upper surface of the workbench 1. The openings of the two limiting plates 15 are arranged opposite each other, and the driven pulley 14 is located between the two limiting plates 15.

[0020] It should be noted that the stepper motor 3, as a power source, drives the active pulley 16 to rotate through its output shaft. This rotational motion is transmitted to the driven pulley 14 through the traction belt 17, which in turn drives the test tube limiting sleeve 10 fixed thereto to rotate around its axis, thereby realizing the dragging and rotation of the test tube 12 placed in the placement slot 13.

[0021] It should be noted that the working principle of the light detection is as follows: When the test tube 12 rotates under the drive of the test tube limiting sleeve 10, the incident light emitted by the emitting light source 9 passes through the emitter 8, through the light transmission groove 7 opened on the storage shell 6, and through the sample in the rotating test tube 12. Finally, it passes through the light transmission groove 7 on the other side and is received by the receiver 4. The change in light signal is converted into an electrical signal and output to the signal connector 5. The test tube cap 11 on the test tube 12 is sealed to the test tube 12 by a threaded connection to ensure the integrity of the sample liquid during rotation. At the same time, the L-shaped limiting plate 15 is fixed on the support frame 2 and the worktable 1, forming an effective constraint and positioning on the driven pulley 14 in the horizontal direction, which is conducive to maintaining the stable operation of the transmission system.

[0022] It should be noted that the signal output from receiver 4 is transmitted to an external control unit for processing via signal connector 5 to ensure data acquisition and storage under the rotation angle of the test tube 12. Subsequently, a preset algorithm is run to analyze, filter, and average the massive amount of acquired data, thereby obtaining the final colorimetric result. (This paragraph involves technical aspects such as circuit design, control system, and software algorithms; the specific implementation should be adjusted according to design requirements and does not constitute a limitation of this utility model.) The test tube limiting sleeve 10 is equipped with a test tube clamping mechanism, which includes a storage box 18, a spring 19, and an elastic ball 21. The inner wall of the placement groove 13 is provided with a pressing groove 20. There are three pressing grooves 20, which are evenly distributed in a circle within the placement groove 13. The storage box 18 with an outer opening is fixedly connected to the pressing groove 20. The elastic ball 21 is placed inside the storage box 18, and the spring 19 connects the elastic ball 21 to the inner wall of the pressing groove 20.

[0023] It should be noted that the test tube clamping mechanism is for the flexible positioning and clamping of the test tube 12. This mechanism forms a three-point support structure by evenly arranging three pressing grooves 20 on the inner wall of the placement groove 13 of the test tube limiting sleeve 10. Each pressing groove 20 has a storage box 18 fixedly connected inside, serving as a guide and receiving structure. The storage box 18 contains a spring 19 and elastic balls 21. When the test tube 12 is placed into the placement groove 13, the outer wall of the test tube 12 presses against the three elastic balls 21. After the spring 19 is compressed, it continuously applies a centripetal force to the elastic balls 21. Under this action, the three elastic balls 21 are evenly distributed around the circumference and closely contact the outer wall of the test tube 12, thereby flexibly and firmly fixing the test tube 12 in the center position of the placement slot 13. This ensures that the test tube 12 can always remain vertically centered on the rotation axis of the test tube limiting sleeve 10. This effectively avoids radial swaying or eccentricity that may occur during the rotation of the test tube, improves the rotational stability of the test tube 12, and thus ensures the stability of light detection and the accuracy of signal acquisition. Furthermore, by utilizing the elastic deformation of the spring 19, the elastic balls 21 can adapt to the slight outer diameter deviation that may exist in different batches of test tubes 12, thereby improving the compatibility and applicability of the device to different test tubes.

[0024] In summary, this utility model provides a test tube rotation colorimetric device, whose structure mainly consists of a worktable 1, a support frame 2, a light detection mechanism, a clamping and rotating mechanism, and a test tube clamping mechanism. The light detection mechanism includes components such as an emitter 8, an emitting light source 9, and a receiver 4, used to collect light signals. A test tube cap 11 is threadedly connected to the upper surface of the test tube 12 to ensure the seal of the sample during rotation.

[0025] The clamping and rotating mechanism uses a stepper motor 3 as the driving element. Its output shaft drives the test tube limiting sleeve 10 through a belt drive structure (driving pulley 16, traction belt 17, driven pulley 14), thereby driving the test tube 12 to rotate. At the same time, the L-shaped limiting plate 15 provides horizontal positioning and constraint for the driven pulley 14.

[0026] The test tube clamping mechanism is located within the placement groove 13 of the test tube limiting sleeve 10 and consists of three evenly distributed pressing grooves 20. Each groove contains a storage box 18, a spring 19, and an elastic ball 21. This mechanism utilizes the centripetal force of the spring 19 to continuously press the elastic ball 21 against the outer wall of the test tube 12, thereby achieving flexible and stable center positioning of the test tube and effectively suppressing radial sway during rotation. The device transmits optical signals via receiver 4 to an external control unit through signal connector 5, enabling data acquisition, filtering, and averaging to eliminate the influence of test tube wall defects on the test results and improve data reliability.

[0027] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A test tube rotation colorimetric device, characterized in that, include: Workbench (1); Support frame (2), multiple support frames (2) are fixedly connected to the outer side of the workbench (1); A light detection mechanism is provided below the workbench (1). The light detection mechanism includes a storage shell (6), a test tube (12), a transmitter (8), and a receiver (4). The storage shell (6) is fixedly connected to the lower surface of the workbench (1). A transparent light-transmitting groove (7) is opened on the outer side of the storage shell (6). The test tube (12) is placed inside the storage shell (6). The receiver (4) and the transmitter (8) are respectively provided on the left and right sides of the storage shell (6). A light source (9) is installed on the transmitter (8), and a signal connector (5) is installed on the receiver (4). A clamping and rotating mechanism is provided on the workbench (1). The clamping and rotating mechanism includes a test tube limiting sleeve (10) and a driven pulley (14). The test tube limiting sleeve (10) is rotatably connected to the upper surface of the workbench (1). A placement groove (13) is opened on the upper surface of the test tube limiting sleeve (10). The test tube (12) passes through the placement groove (13) and is placed in the storage shell (6). The driven pulley (14) is fixedly connected to the outer surface of the test tube limiting sleeve (10). The driven pulley (14) is driven by a transmission mechanism. The test tube clamping mechanism is provided inside the test tube limiting sleeve (10).

2. The test tube rotation colorimetric device according to claim 1, characterized in that, A stepper motor (3) is fixedly installed on the lower surface of the workbench (1). The output end of the stepper motor (3) passes through the corresponding slot on the workbench (1) and is fixedly connected to the drive pulley (16) through the coupling. The drive pulley (16) is connected to the driven pulley (14) through the traction belt (17).

3. The test tube rotation colorimetric device according to claim 2, characterized in that, The outer surface of the support frame (2) and the upper surface of the workbench (1) are both fixedly connected with L-shaped limiting plates (15). The openings of the two limiting plates (15) are arranged opposite each other, and the driven pulley (14) is located between the two limiting plates (15).

4. The test tube rotation colorimetric device according to claim 1, characterized in that, The test tube (12) is threadedly connected to a matching test tube cap (11) on its upper surface.

5. The test tube rotation colorimetric device according to claim 1, characterized in that, The test tube clamping mechanism includes a storage box (18), a spring (19) and an elastic ball (21). The inner wall of the placement groove (13) is provided with a pressing groove (20). The storage box (18) with an outer opening is fixedly connected in the pressing groove (20). The elastic ball (21) is placed in the storage box (18), and the spring (19) is connected between the elastic ball (21) and the inner wall of the pressing groove (20).

6. The test tube rotation colorimetric device according to claim 5, characterized in that, There are three pressing grooves (20), and the three pressing grooves (20) are evenly distributed in a circular pattern in the placement groove (13).

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