Novel burette balancing and stabilizing device for laboratory

Abstract

The utility model discloses a novel burette balancing and stabilizing device for laboratories, which comprises a shell, a controller is mounted in the shell, a mounting groove is formed in the surface of the shell, an electric turntable is fixed on the inner wall of the mounting groove, a mounting table is fixed on the top of the electric turntable, a sliding guide rail is fixed on the top of the mounting table, and the sliding guide rail is fixed on the inner wall of the mounting groove. A driving motor is fixed to the top of the sliding guide rail, an output shaft of the driving motor penetrates through the sliding guide rail and is fixedly provided with a lead screw, the bottom of the lead screw is rotationally connected with the inner wall of the sliding guide rail, the surface of the lead screw is in threaded connection with a sliding table, a mechanical table is arranged on one side of the sliding table, and two pipe frames are fixed to the surface of the mechanical table; and two mechanical arms are mounted on the surface of the pipe frame. According to the utility model, the innovative design of automatic balance, stable adjustment and controllable self-adaptive grasping is adopted, and meanwhile, the burette is enabled to rotate in parallel through devices such as the sliding guide rail and the brushless motor, so that the reading is convenient and accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical analysis instruments, in particular to a novel burette balancing and stabilizing device for a laboratory. Background Art

[0002] In today's chemical analysis experiment process, titration experiment occupies a very important position. It is simple to operate, convenient and fast, and is widely used in many fields. Through titration experiment, accurate analysis and monitoring of substances can be achieved, which is of great significance for ensuring product quality, ensuring production safety, protecting the environment and promoting scientific research.

[0003] In traditional titration experiments, the experimenter needs to adjust the iron stand and then fix the burette with a butterfly clamp. Using this traditional device is not only time-consuming, labor-intensive, and mentally demanding, but also cannot ensure that the burette is perpendicular to the ground. It is also inconvenient to read the reading. If the burette is not perpendicular to the ground, that is, the burette is placed at an angle, the tangent line between the concave liquid surface and the scale line will change. In addition, the traditional burette stand is placed on the laboratory table, which is not convenient for free adjustment of height. Different heights and different eye heights will result in different readings. To reduce the possibility of misreading, the burette needs to be repeatedly picked up and down, which is not convenient. Utility Model Content

[0004] The purpose of the utility model is to provide a novel burette balancing and stabilizing device for laboratory use, which adopts an innovative design of automatic balancing and stabilizing adjustment and controllable adaptive gripping, and at the same time, through sliding guides, brushless motors and other devices, the burette can be rotated in parallel to ensure convenient and accurate reading.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel burette balancing and stabilizing device for a laboratory, comprising a shell, a controller installed inside the shell, a mounting groove opened on the surface of the shell, an electric turntable fixed on the inner wall of the mounting groove, a mounting platform fixed on the top of the electric turntable, a sliding guide rail fixed on the top of the sliding guide rail, a driving motor fixed on the top of the sliding guide rail, an output shaft of the driving motor passes through the sliding guide rail and is fixed with a screw rod, the bottom of the screw rod is rotatably connected to the inner wall of the sliding guide rail, a slide is threadedly connected to the surface of the screw rod, a mechanical table is provided on one side of the slide, two pipe racks are fixed on the surface of the mechanical table, two mechanical arms are installed on the surface of the pipe rack, three-claw clamps are installed on the surface of the mechanical arms, a sensing structure is installed on the surface of the three-claw clamp, a measuring structure is installed inside the mechanical table, an adjustment structure is installed on the surface of the slide, a control panel and a main switch are fixed on the surface of the shell, and an operation button is installed on the surface of the mechanical table.

[0006] As a novel laboratory burette balancing and stabilizing device preferably of the present invention, the three-jaw clamp surface sensing structure includes a pressure sensor, the pressure sensor is fixed on the three-jaw clamp surface, and a buzzer is fixed on the top of the mechanical table.

[0007] As a preferred novel burette balancing and stabilizing device for laboratory use of the present invention, the internal measurement structure of the mechanical platform includes an inertial measurement unit, a gyroscope sensor and an angular velocity sensor.

[0008] As a novel laboratory burette balancing and stabilizing device preferably, the slide surface adjustment structure includes two side plates, the side plates are fixed to the slide surface, a brushless motor is fixed to the surface of one side of the side plate, the output shaft of the brushless motor passes through the side plate and is fixed with a worm, one end of the worm is rotatably connected to the surface of the side plate, a worm wheel is engaged with the surface of the worm, a rotating shaft is fixed to the surface of the worm wheel, one end of the rotating shaft is rotatably connected to the surface of the slide, and the other end of the rotating shaft is rotatably connected to the surface of the mechanical table.

[0009] As a novel laboratory burette balancing and stabilizing device preferably of the present invention, a plurality of anti-slip foot pads are fixed to the bottom of the shell, and a rubber pad is fixed to the surface of the three-jaw clamp.

[0010] As a novel laboratory burette balancing and stabilizing device preferably of the present invention, the shell and the surface of the tube rack are sprayed with anti-corrosion paint.

[0011] As a novel laboratory burette balancing and stabilizing device of the utility model, the control panel is preferably composed of six buttons, which are "↑", "↓", "View", "Reset", "Balance" and "Lock".

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The utility model saves the time of taking the burette, is conducive to improving the accuracy of the experiment, and ensures that the burette is always in the direction of gravity through the measuring structure and the adjusting structure, thereby reducing titration errors; eliminating the taking process, avoids the error caused by position offset during the placement process, and is equipped with a viewing system to ensure that the tangent line of the concave liquid surface and the line of sight are on the same horizontal line each time the reading is taken, thereby reducing the error caused by misreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another perspective;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 5 It is a schematic diagram of the local structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the local structure of the utility model.

[0020] In the figure: 1. Housing; 2. Mounting slot; 3. Electric turntable; 4. Mounting table; 5. Sliding guide rail; 6. Drive motor; 7. Screw; 8. Slide; 9. Mechanical table; 10. Pipe rack; 11. Robotic arm; 12. Three-jaw gripper; 13. Control panel; 14. Main switch; 15. Side panel; 16. Brushless motor; 17. Worm; 18. Worm gear; 19. Rotating shaft; 20. Operation button; 21. Pressure sensor; 22. Buzzer; 23. Rubber pad; 24. Anti-slip foot pad. DETAILED DESCRIPTION

[0021] See also Figure 1-6 A novel burette balancing and stabilizing device for a laboratory comprises a shell 1, a controller is installed inside the shell 1, a mounting groove 2 is opened on the surface of the shell 1, an electric turntable 3 is fixed on the inner wall of the mounting groove 2, a mounting platform 4 is fixed on the top of the electric turntable 3, a sliding guide rail 5 is fixed on the top of the mounting platform 4, a driving motor 6 is fixed on the top of the sliding guide rail 5, the output shaft of the driving motor 6 passes through the sliding guide rail 5 and is fixed with a screw rod 7, the bottom of the screw rod 7 is rotatably connected to the inner wall of the sliding guide rail 5, a slide 8 is threadedly connected to the surface of the screw rod 7, a mechanical table 9 is provided on one side of the slide 8, two pipe racks 10 are fixed on the surface of the mechanical table 9, two mechanical arms 11 are installed on the surface of the pipe rack 10, three-claw grippers 12 are installed on the surface of the mechanical arm 11, a sensing structure is installed on the surface of the three-claw gripper 12, a measuring structure is installed inside the mechanical table 9, an adjusting structure is installed on the surface of the slide 8, a control panel 13 and a main switch 14 are fixed on the surface of the shell 1, an operation button 20 is installed on the surface of the mechanical table 9, and the operation button 20 consists of two buttons of "lock" and "relax";

[0022] The main switch 14 can turn the device on and off. After placing the burette in the middle of the tube rack 10, press the "lock" button on the operation button 20. At this time, the three-claw clamps 12 on the surfaces of the upper and lower mechanical arms 11 will clamp the burette and use the sensing structure to determine whether the burette is clamped. After clamping, the sensing structure will emit a "beep" sound, and then you can let go of the burette and stop holding it. Then use the control panel 13 to start judging the horizontal situation through the measurement structure and adjust the rotation angle of the mechanical table 9 through the adjustment structure. After adjustment, adjust the height of the mechanical table 9 through the control panel 13. After adjusting to the appropriate position, perform the titration experiment. After the titration experiment is completed, operate the electric turntable 3 through the control panel 13 to rotate the mounting table 4 to the front. The height position of the mechanical table 9 is then controlled by the control panel 13 so that the concave liquid surface of the solution in the burette is flush with the line of sight, thereby facilitating accurate reading. After reading, the device is restored to its original position by the control panel 13, and the "relax" button on the operation button 20 is used to release the burette. After that, the main switch 14 can be operated to end use. Through the above design, the time for taking the burette is saved, which is conducive to improving the accuracy of the experiment. The measuring structure and the adjustment structure ensure that the burette is always in the direction of gravity, reducing titration errors. Eliminating the picking process avoids errors caused by position offset during the placement process. At the same time, a viewing system is provided to ensure that the tangent line of the concave liquid surface and the line of sight are on the same horizontal line for each reading, reducing errors caused by misreading.

[0023] Furthermore, the surface sensing structure of the three-jaw gripper 12 includes a pressure sensor 21, which is fixed to the surface of the three-jaw gripper 12, and a buzzer 22 is fixed on the top of the mechanical table 9;

[0024] When the "lock" command is issued through the operation button 20, the three-jaw clamp 12 contacts the burette towards each other, and the pressure sensor 21 monitors the pressure. Then, they move closer to each other by 0.1mm to ensure clamping. At this time, the pressure of the pressure sensor 21 reaches the threshold, causing the pressure sensor 21 to send a signal to the controller, thereby causing the controller to stop the movement of the three-jaw clamp 12. After the three-jaw clamp 12 on the surface of the small robotic arm 11 below is gripped, the three-jaw clamp 12 on the surface of the large robotic arm 11 above grips the burette again and engages with the small gripper. When both pressure sensors 21 reach the threshold, the controller controls the buzzer 22 to emit a "beep" prompt sound after completion, to remind the staff that the clamping is completed.

[0025] Furthermore, the internal measurement structure of the mechanical stage 9 includes an inertial measurement unit, a gyroscope sensor and an angular velocity sensor;

[0026] The inertial measurement unit is used to receive feedback sensor data, the gyroscope sensor is used to detect the direction of gravity of the mechanical platform 9, and the angular velocity sensor can also be considered as a second gyroscope sensor. It uses the gyro effect to help the brushless motor 16 adjust the angle of rotation of the mechanical platform 9. During use, the gyroscope sensor and the angular velocity sensor send data to the inertial measurement unit, and the inertial measurement unit sends a signal to the controller. The controller receives the current position, analyzes the angle that needs to be adjusted to adjust the direction of gravity, and then transmits a signal to the brushless motor 16 to adjust the mechanical platform 9 to the correct position.

[0027] Furthermore, the surface adjustment structure of the slide 8 includes two side plates 15, which are fixed to the surface of the slide 8. A brushless motor 16 is fixed to the surface of one side plate 15. The output shaft of the brushless motor 16 passes through the side plate 15 and is fixed to a worm 17. One end of the worm 17 is rotatably connected to the surface of the side plate 15. A worm gear 18 is engaged with the surface of the worm 17. A rotating shaft 19 is fixed to the surface of the worm gear 18. One end of the rotating shaft 19 is rotatably connected to the surface of the slide 8, and the other end of the rotating shaft 19 is rotatably connected to the surface of the mechanical table 9.

[0028] When the brushless motor 16 is started, the worm 17 drives the worm wheel 18 to rotate, so that the worm wheel 18 can drive the mechanical platform 9 to rotate through the rotating shaft 19, thereby adjusting the vertical angle of the mechanical platform 9. At the same time, since the worm wheel 18 cannot drive the worm 17 to rotate, the mechanical platform 9 can achieve a self-locking effect after the angle is adjusted.

[0029] Furthermore, a plurality of anti-skid pads 24 are fixed to the bottom of the housing 1, and a rubber pad 23 is fixed to the surface of the three-jaw clamp 12;

[0030] The anti-slip foot pad 24 prevents the device from directly contacting the laboratory table, facilitates the transportation of the device, and prevents the device from displacement. The rubber pad 23 can increase the friction with the glass burette, making it easier to clamp and fix the glass burette.

[0031] Furthermore, the surface of the housing 1 and the pipe rack 10 are sprayed with anti-corrosion paint;

[0032] The anti-corrosion paint can isolate the surfaces of the housing 1 and the pipe rack 10 from contact with oxygen and water vapor in the air, thereby preventing them from undergoing oxidation reactions and extending their service life.

[0033] Furthermore, the control panel 13 is composed of six buttons, namely, “↑”, “↓”, “View”, “Reset”, “Balance” and “Lock”;

[0034] The "↑" and "↓" keys can transmit signals to the controller, causing the controller to control the forward and reverse rotation of the drive motor 6, so that the slide 8 moves up and down under the influence of the thread, thereby realizing the up and down movement of the mechanical table 9; the "View" key can transmit signals to the controller, causing the controller to control the electric turntable 3 to rotate the mounting table 4 to the front for easy reading; the "Reset" key can restore the device to its initial position through the controller; the "Balance" key can transmit signals to the controller, causing the controller to control the brushless motor 16 to adjust the rotation angle of the mechanical table 9, so that the burette is not disturbed by shaking and is repeatedly adjusted to the direction of gravity; the "Lock" key can end the adjustment and lock the mechanical table 9.

[0035] Furthermore, the controller inside the housing 1 is electrically connected to the control panel 13, the main switch 14, the electric turntable 3, the drive motor 6, the brushless motor 16, the robotic arm 11, the three-jaw gripper 12, the operation button 20, the buzzer 22, the pressure sensor 21, the inertial measurement unit, the gyroscope sensor, and the angular velocity sensor;

[0036] The operator can send signals to the controller through the control panel 13 and the operation button 20. At the same time, the pressure sensor 21, the inertial measurement unit, the gyroscope sensor and the angular velocity sensor can also send signals to the controller, so that the controller can operate multiple devices.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel burette balancing and stabilizing device for laboratory use, characterized by: The invention comprises a housing (1), a controller is installed inside the housing (1), a mounting groove (2) is provided on the surface of the housing (1), an electric turntable (3) is fixed to the inner wall of the mounting groove (2), a mounting platform (4) is fixed on the top of the electric turntable (3), a sliding guide rail (5) is fixed on the top of the mounting platform (4), a driving motor (6) is fixed on the top of the sliding guide rail (5), an output shaft of the driving motor (6) passes through the sliding guide rail (5) and is fixed with a screw rod (7), the bottom of the screw rod (7) is rotatably connected to the inner wall of the sliding guide rail (5), and the surface of the screw rod (7) is threadedly connected with a sliding guide rail. A platform (8) is provided on one side of the slide (8), two pipe racks (10) are fixed on the surface of the mechanical platform (9), two mechanical arms (11) are installed on the surface of the pipe rack (10), three-claw clamps (12) are installed on the surface of the mechanical arms (11), and a sensing structure is installed on the surface of the three-claw clamps (12), a measuring structure is installed inside the mechanical platform (9), an adjustment structure is installed on the surface of the slide (8), a control panel (13) and a main switch (14) are fixed on the surface of the housing (1), and an operation button (20) is installed on the surface of the mechanical platform (9).

2. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: The surface sensing structure of the three-claw clamp (12) includes a pressure sensor (21), the pressure sensor (21) is fixed on the surface of the three-claw clamp (12), and a buzzer (22) is fixed on the top of the mechanical platform (9).

3. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: The internal measurement structure of the mechanical platform (9) includes an inertial measurement unit, a gyroscope sensor and an angular velocity sensor.

4. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: The surface adjustment structure of the slide (8) includes two side plates (15), the side plates (15) are fixed to the surface of the slide (8), a brushless motor (16) is fixed to the surface of one side plate (15), the output shaft of the brushless motor (16) passes through the side plate (15) and is fixed with a worm (17), one end of the worm (17) is rotatably connected to the surface of the side plate (15), the surface of the worm (17) is meshed with a worm wheel (18), a rotating shaft (19) is fixed to the surface of the worm wheel (18), one end of the rotating shaft (19) is rotatably connected to the surface of the slide (8), and the other end of the rotating shaft (19) is rotatably connected to the surface of the mechanical platform (9).

5. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: A plurality of anti-slip pads (24) are fixed to the bottom of the housing (1), and a rubber pad (23) is fixed to the surface of the three-claw clamp (12).

6. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: The surfaces of the shell (1) and the pipe rack (10) are sprayed with anti-corrosion paint.

7. A novel laboratory burette balancing and stabilizing device according to claim 1, characterized in that: The control panel (13) is composed of six buttons, which are respectively "↑", "↓", "view", "reset", "balance" and "lock".

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