Automatic titration device for microcalorimeter

Abstract

The utility model provides an automatic titration device for a microcalorimeter. The automatic titration device comprises a fixed shell, a plurality of micro servo motors are installed in the top end of the fixing shell, an output shaft of one micro servo motor is connected with a rotating shaft, output shafts of the other micro servo motors are connected with screw rods, and the side walls of the screw rods are in threaded connection with fixing blocks; a calibration plate and a compression rod are slidably connected to the interior of the fixing shell, the calibration plate is fixedly connected to the top end of the compression rod, and the top end of the compression rod abuts against the fixing block; a contact sensor is installed in the fixing block and abuts against the top face of the compression rod. An injector is installed in the fixing shell, and a push rod in the injector is clamped into the compression rod. The automatic titration device for the microcalorimeter, provided by the utility model, has the advantage of automatically and accurately dripping a measured substance into a solution.

Description

Technical Field

[0001] This utility model relates to the field of micro calorimeter technology, and in particular to an automatic titration device for micro calorimeters. Background Technology

[0002] A micro calorimeter is a highly sensitive thermal analysis device that analyzes the thermodynamic and thermophysical properties of a substance by measuring the changes in heat absorbed or released during heating or cooling.

[0003] When using a microcalorimeter to measure certain substances, it is necessary to titrate the substance with multiple appropriate amounts of solution to understand the changing patterns of the substance's physical properties. However, in actual operation, it is difficult to control the volume of solution added by manual titration, thus making it impossible to accurately determine the volume of solution added, increasing experimental error and affecting the accuracy of the measurement results.

[0004] Therefore, it is necessary to provide a new automatic titration device for microcalorimeters to solve the above problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide an automatic titration device for a microcalorimeter that automatically and accurately adds the measured substance into the solution.

[0006] To solve the above-mentioned technical problems, the automatic titration device for a micro calorimeter provided by this utility model includes: a fixed shell; multiple micro servo motors are installed inside the top of the fixed shell, the output shaft of one of the micro servo motors is connected to a rotating shaft, and the output shafts of the other micro servo motors are connected to screws, the side wall of the screws is threadedly connected to a fixed block; a calibration plate and a compression rod are slidably connected inside the fixed shell, the top of the compression rod is fixedly connected to the calibration plate, and the top of the compression rod abuts against the fixed block; a contact sensor is installed inside the fixed block, and the contact sensor abuts against the top surface of the compression rod; a syringe is installed inside the fixed shell, and the push rod inside the syringe engages with the inside of the compression rod; an adjustment plate is installed at the bottom of the fixed shell, and the side wall of the adjustment plate is provided with multiple interconnected first mounting slots and second mounting slots, the syringe is slidably connected inside the first mounting slot, and a connector is slidably connected inside the second mounting slot, one end of the connector engages with the syringe, and the other end of the connector is equipped with an injection tube.

[0007] Preferably, the sidewall of the fixed shell is provided with a plurality of sliding grooves, one side of the sliding groove is provided with a scale line, and the calibration plate is slidably connected inside the sliding groove.

[0008] Preferably, the number of the slide, the fixing block, the compression rod, the syringe, the first mounting slot, and the second mounting slot are the same.

[0009] Preferably, the sidewalls of both the first mounting groove and the second mounting groove are arc-shaped, and the diameter of the first mounting groove is larger than the diameter of the second mounting groove.

[0010] Preferably, the interior of the fixed shell is provided with a plurality of storage slots, the syringe is slidably connected inside the storage slots, the storage slots are in communication with the first mounting slot or the second mounting slot, and the diameter of the storage slots is equal to the diameter of the first mounting slot and the syringe.

[0011] Preferably, the bottom end of the fixed shell is fixedly connected to multiple protrusions, and the surface of the adjusting disc is provided with multiple slots with arc-shaped sidewalls, and the protrusions are slidably connected to the slots.

[0012] Preferably, a fixed cylinder is fixedly connected to the center of the interior of the fixed shell, and a rotating shaft is rotatably connected to the interior of the fixed cylinder. A stirring blade is installed at the bottom end of the rotating shaft. One end of the fixed cylinder and the injection tube are located inside the reagent bottle, and the stirring blade is rotatably connected to the interior of the reagent bottle.

[0013] Compared with related technologies, the automatic titration device for micro calorimeters provided by this utility model has the following advantages:

[0014] This invention provides an automatic titration device for a micro calorimeter. When the syringe is inserted into the fixed housing, because the volume of liquid drawn into the syringe is greater than the required volume, the calibration plate is held, and the calibration plate moves downwards along the slide groove, simultaneously driving the compression rod to press down the push rod. The distance moved by the calibration plate is observed according to the scale lines on the side wall of the slide groove. When the scale corresponding to the calibration plate is the required volume of liquid inside the syringe, the sliding of the calibration plate stops. The micro servo motor is then activated, driving the fixed block to move upwards. When the fixed block contacts the calibration plate, the contact sensor inside the fixed block alarms, reminding the user that the fixed block has contacted the calibration plate, and the micro servo motor is deactivated. The device is used when measuring the substance inside the reagent bottle of the micro calorimeter. During the process, when a solution needs to be added to the substance inside the reagent bottle, the micro servo motor corresponding to this solution is activated. The micro servo motor drives the screw to rotate inside the fixed shell. The fixed block is threadedly connected to the screw. Utilizing the principle of helical transmission, the rotation of the screw drives the fixed block and the compression rod to move linearly inside the fixed shell. This causes the compression rod to push the push rod inside the syringe, and the push rod injects the solution inside the syringe into the reagent bottle through the injection tube, allowing it to contact the substance. By controlling the rotation speed and operating time of the micro servo motor, the speed and distance of the movement of the fixed block, the compression rod, and the push rod inside the fixed shell can be adjusted, thereby precisely controlling the titration speed and volume of the solution, reducing measurement errors, and improving the accuracy of the measurement results. Attached Figure Description

[0015] Figure 1 A schematic diagram of a preferred embodiment of the automatic titration device for a micro calorimeter provided by this utility model;

[0016] Figure 2 for Figure 1 The diagram shows a fixed shell structure.

[0017] Figure 3 A schematic diagram of the internal structure of the automatic titration device for a micro calorimeter provided by this utility model;

[0018] Figure 4 for Figure 1 The diagram shows the structure of the regulating disc.

[0019] Figure 5 for Figure 1 The diagram shows the internal structure of the adjustment disc.

[0020] Figure 6 for Figure 3 The top view of the fixed block structure shown.

[0021] The following are the labels in the diagram: 1. Fixed shell, 2. Reagent bottle, 3. Injection tube, 31. Connector, 4. Adjustment plate, 41. Slot, 42. Protrusion, 5. Slide groove, 51. Scale line, 6. Fixed cylinder, 61. Rotating shaft, 62. Stirring blade, 7. Syringe, 71. Push rod, 8. Miniature servo motor, 9. Fixed block, 10. Screw, 11. Compression rod, 12. First mounting slot, 13. Second mounting slot, 14. Storage slot, 15. Calibration plate, 16. Contact sensor. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1 to 6 , Figure 1 A schematic diagram of a preferred embodiment of the automatic titration device for a micro calorimeter provided by this utility model; Figure 2 for Figure 1 The diagram shows a fixed shell structure. Figure 3 A schematic diagram of the internal structure of the automatic titration device for a micro calorimeter provided by this utility model; Figure 4 for Figure 1 The diagram shows the structure of the regulating disc. Figure 5 for Figure 1 The diagram shows the internal structure of the adjustment disc. Figure 6 for Figure 3Top view of the fixed block structure shown: Fixed shell 1; Multiple micro servo motors 8 are installed inside the top of the fixed shell 1, the output shaft of one of the micro servo motors 8 is connected to a rotating shaft 61, and the output shafts of the other micro servo motors 8 are connected to screws 10. The side wall of the screws 10 is threadedly connected to the fixed block 9; A calibration plate 15 and a compression rod 11 are slidably connected inside the fixed shell 1, the top of the compression rod 11 is fixedly connected to the calibration plate 15, and the top of the compression rod 11 abuts against the fixed block 9; A contact sensor 16 is installed inside the fixed block 9, and the contact sensor 16 abuts against the top surface of the compression rod 11; The corresponding compression rods 11 are aligned with the fixed blocks 9; A syringe 7 is installed inside the fixed shell 1, and the push rod 71 inside the syringe 7 engages with the inside of the compression rod 11; An adjusting plate 4 is installed at the bottom of the fixed shell 1, and the side wall of the adjusting plate 4 has multiple interconnected first mounting grooves 12 and second mounting grooves 13. The syringe 7 is slidably connected inside the first mounting groove 12, and the connector 31 is slidably connected inside the second mounting groove 13. One end of the connector 31 engages with the syringe 7, and the other end of the connector 31 is fitted with an injection tube 3. During the measurement of the substance inside the reagent bottle 2 using a microcalorimeter, when a solution needs to be added to the substance inside the reagent bottle 2, the corresponding micro servo motor 8 is activated. The micro servo motor 8 drives the screw 10 to rotate inside the fixed housing 1. The fixed block 9 is threadedly connected to the screw 10. Utilizing the principle of helical transmission, the rotation of the screw 10 drives the fixed block 9 and the compression rod 11 to move linearly inside the fixed housing 1, causing the compression rod 11 to push the push rod 71 to move inside the syringe 7. The push rod 71 injects the solution inside the syringe 7 into the reagent bottle 2 through the injection tube 3, allowing it to contact the substance. By controlling the rotation speed and operating time of the micro servo motor 8, the speed and distance of the fixed block 9, the compression rod 11, and the push rod 71 moving inside the fixed housing 1 are adjusted, thereby precisely controlling the titration speed and volume of the solution, reducing measurement errors, and improving the accuracy of the measurement results.

[0024] The side wall of the fixed shell 1 is provided with a plurality of sliding grooves 5, and a scale line 51 is provided on one side of the sliding groove 5, and the calibration plate 15 is slidably connected inside the sliding groove 5. When the syringe 7 is placed inside the fixed housing 1, since the volume of liquid drawn into the syringe 7 is greater than the required volume, the calibration plate 15 is held, and the calibration plate 15 moves downward along the slide 5, simultaneously driving the compression rod 11 to squeeze the push rod 71 downward, squeezing out the excess liquid inside the syringe 7. According to the scale line 51 on the side wall of the slide 5, the distance moved by the calibration plate 15 is observed. When the scale corresponding to the calibration plate 15 is the required test volume of liquid inside the syringe 7, the sliding of the calibration plate 15 is stopped; the micro servo motor 8 is turned on, driving the fixed block 9 to move. When the fixed block 9 contacts the calibration plate 15, the contact sensor 16 inside the fixed block 9 alarms, reminding people that the fixed block 9 has contacted the calibration plate 15. The micro servo motor 8 is turned off to stop the movement of the fixed block 9, completing the calibration of the solution inside the syringe 7.

[0025] The number of the slide 5, the fixing block 9, the compression rod 11, the syringe 7, the first mounting slot 12, and the second mounting slot 13 are the same. In order to make each of the micro servo motors 8 correspond to one syringe 7, the micro servo motors 8 can push various solutions into the reagent bottle as needed, which is convenient for people to carry out measurement experiments.

[0026] The sidewalls of the first mounting groove 12 and the second mounting groove 13 are both arc-shaped, and the diameter of the first mounting groove 12 is larger than the diameter of the second mounting groove 13. The interior of the fixed housing 1 is provided with multiple storage grooves 14. A syringe 7 is slidably connected inside each storage groove 14. The storage groove 14 communicates with either the first mounting groove 12 or the second mounting groove 13. The diameter of the storage groove 14 is equal to the diameter of both the first mounting groove 12 and the syringe 7. To prevent the syringe 7 from shifting inside the storage groove 14, the syringe 7 is placed parallel inside the fixed housing 1. When the syringe 7 is placed inside the fixed housing 1, the adjusting disc 4 is rotated, aligning the first mounting groove 12 on the sidewall of the adjusting disc 4 with the storage groove 14. The syringe 7 is then inserted through the first mounting groove 12 into the storage groove 14. The adjusting disc 4 is then rotated again, aligning the second mounting groove 13 on the sidewall of the adjusting disc 4 with the storage groove 14. The diameter of the second mounting groove 13 is smaller than the diameter of the storage groove 14, thereby fixing the syringe 7 inside the storage groove 14.

[0027] The bottom end of the fixed shell 1 is fixedly connected to multiple protrusions 42. The surface of the adjusting disk 4 is provided with multiple slots 41 with arc-shaped sidewalls. The protrusions 42 and the slots 41 are slidably connected. During the rotation of the adjusting disk 4, the adjusting disk 4 drives the slots 41 to rotate. The adjusting disk 4 slides on the sidewall of the protrusions 42. The protrusions 42 limit the adjustment disk 4 to prevent the adjustment disk 4 from rotating too much, which facilitates the alignment of the mounting slot with the storage slot 14.

[0028] A fixed cylinder 6 is fixedly connected to the center of the interior of the fixed shell 1. A rotating shaft 61 is rotatably connected inside the fixed cylinder 6. A stirring blade 62 is installed at the bottom end of the rotating shaft 61. One end of the fixed cylinder 6 and the injection tube 3 are located inside the reagent bottle 2, and the stirring blade 62 is rotatably connected to the interior of the reagent bottle 2. When it is necessary to stir the substance inside the reagent bottle 2, the micro servo motor 8 located in the center of the interior of the fixed shell 1 is turned on, thereby driving the rotating shaft 61 and the stirring blade 62 to rotate, so that the stirring blade 62 stirs and mixes the substance inside the reagent bottle 2.

[0029] The working principle of the automatic titration device for micro calorimeter provided by this utility model is as follows: The adjusting disk 4 is rotated, aligning the first mounting groove 12 on the side wall of the adjusting disk 4 with the storage tank 14. Multiple syringes 7 containing solution are inserted through the first mounting groove 12 into the storage tank 14. The adjusting disk 4 is then rotated again, aligning the second mounting groove 13 on the side wall of the adjusting disk 4 with the storage tank 14. The diameter of the second mounting groove 13 is smaller than the diameter of the storage tank 14, thereby fixing the syringes 7 inside the storage tank 14. The connector 31 is inserted into the second mounting groove 13, engaging with the bottom end of the syringe 7. The device is then powered on, and the micro servo motor 8 and the contact sensor 16 are connected to an external control device (such as an industrial computer) to control the operation of the micro servo motor 8 and the contact sensor 16 and to receive information. After the syringe 7 is placed inside the fixed housing 1, since the volume of liquid drawn into the syringe 7 is greater than the required volume, the calibration plate 15 is held, and the calibration plate 15 moves downward along the slide 5, simultaneously driving the compression rod 11 to squeeze the push rod 71 downward, squeezing out the excess liquid inside the syringe 7 through the injection tube 3. According to the scale line 51 on the side wall of the slide 5, the distance moved by the calibration plate 15 is observed. When the scale corresponding to the calibration plate 15 is the required test volume of liquid inside the syringe 7, the sliding of the calibration plate 15 is stopped; the micro servo motor 8 is turned on, driving the fixed block 9 to move. When the fixed block 9 contacts the calibration plate 15, the contact sensor 16 inside the fixed block 9 alarms, reminding people that the fixed block 9 has contacted the calibration plate 15. The micro servo motor 8 is turned off to stop the movement of the fixed block 9, completing the calibration of the solution inside the syringe 7. After all the liquids inside the syringes 7 have been calibrated, the injection tubes 3 and the fixing cylinders 6 are inserted into the reagent bottle 2 containing the measuring substance, and then the reagent bottle 2 is placed inside the microcalorimeter for measurement.During the measurement process, when a solution needs to be added to the substance inside the reagent bottle 2, the micro servo motor 8 corresponding to this solution is turned on. The micro servo motor 8 drives the screw 10 to rotate inside the fixed shell 1. The fixed block 9 is threadedly connected to the screw 10. Utilizing the principle of helical transmission, the rotation of the screw 10 drives the fixed block 9 and the compression rod 11 to move linearly inside the fixed shell 1. This causes the compression rod 11 to push the push rod 71 to move inside the syringe 7. The push rod 71 then injects the solution inside the syringe 7 through the injection tube 3 into the syringe. The reagent bottle 2 is inserted into the reagent bottle to contact the substance. By controlling the rotation speed and operating time of the micro servo motor 8, the speed and distance of the fixed block 9, the compression rod 11, and the push rod 71 moving inside the fixed shell 1 are adjusted, thereby precisely controlling the titration speed and volume of the solution, reducing measurement errors, and improving the accuracy of the measurement results. When it is necessary to stir the substance inside the reagent bottle 2, the micro servo motor 8 located in the center of the fixed shell 1 is turned on, thereby driving the rotating shaft 61 and the stirring blade 62 to rotate, so that the stirring blade 62 stirs and mixes the substance inside the reagent bottle 2.

[0030] 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. An automatic titration device for a micro calorimeter, characterized in that, include: A fixed housing (1) is provided; multiple micro servo motors (8) are installed inside the top of the fixed housing (1), the output shaft of one of the micro servo motors (8) is connected to a rotating shaft (61), and the output shafts of the other micro servo motors (8) are connected to screws (10). The side wall of the screws (10) is threadedly connected to the fixed block (9); a calibration plate (15) and a compression rod (11) are slidably connected inside the fixed housing (1), the top of the compression rod (11) is fixedly connected to the calibration plate (15), and the top of the compression rod (11) abuts against the fixed block (9); a contact sensor (16) is installed inside the fixed block (9), and the contact sensor (16) abuts against the top surface of the compression rod (11); The syringe (7) is installed inside the fixed shell (1), and the push rod (71) inside the syringe (7) engages with the inside of the compression rod (11); an adjustment plate (4) is installed at the bottom of the fixed shell (1), and the side wall of the adjustment plate (4) is provided with a plurality of interconnected first mounting grooves (12) and second mounting grooves (13). The syringe (7) is slidably connected inside the first mounting groove (12), and the connector (31) is slidably connected inside the second mounting groove (13). One end of the connector (31) engages with the syringe (7), and the other end of the connector (31) is installed with an injection tube (3).

2. The automatic titrator for micro calorimeter according to claim 1, wherein, The side wall of the fixed shell (1) is provided with a plurality of sliding grooves (5), and a scale line (51) is provided on one side of the sliding groove (5), and the calibration plate (15) is slidably connected inside the sliding groove (5).

3. The automatic titrator for micro calorimeter according to claim 2, wherein, The number of the slide (5), the fixing block (9), the compression rod (11), the syringe (7), the first mounting slot (12), and the second mounting slot (13) are the same.

4. The automatic titrator for micro calorimeter according to claim 3, wherein The sidewalls of the first mounting groove (12) and the second mounting groove (13) are both arc-shaped, and the diameter of the first mounting groove (12) is larger than the diameter of the second mounting groove (13).

5. The automatic titrator for microcalorimeter according to claim 4, wherein The fixed shell (1) has multiple storage slots (14) inside. The syringe (7) is slidably connected inside the storage slot (14). The storage slot (14) is connected to the first mounting slot (12) or the second mounting slot (13). The diameter of the storage slot (14) is equal to the diameter of the first mounting slot (12) and the syringe (7).

6. The automatic titration device for a micro calorimeter according to claim 1, characterized in that, The bottom end of the fixed shell (1) is fixedly connected to multiple protrusions (42), and the surface of the adjustment plate (4) is provided with multiple slots (41) with arc-shaped sidewalls. The protrusions (42) and the slots (41) are slidably connected.

7. The automatic titrator for micro calorimeter according to claim 1, wherein The fixed shell (1) is fixedly connected to the fixed cylinder (6) at the center of the interior. The fixed cylinder (6) is rotatably connected to the rotating shaft (61). The bottom end of the rotating shaft (61) is equipped with a stirring blade (62). One end of the fixed cylinder (6) and the injection tube (3) are located inside the reagent bottle (2), and the stirring blade (62) is rotatably connected to the interior of the reagent bottle (2).

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