A multifunctional device for differential thermal analysis

Abstract

This application relates to the technical field of thermal analysis and specifically discloses a multifunctional device for differential thermal analysis, including a housing with a receiving cavity inside; a heating system located at the bottom of the receiving cavity; a support assembly including a first support assembly and a second support assembly, with a linkage assembly between the first and second support assemblies, driving the first and second support assemblies to move up and down synchronously; an adjustment assembly located on the support assembly, with a tray mounted on the support assembly, and the adjustment assembly located between the tray and the support assembly, used to correct the horizontal position of the tray; a partition located between the first and second support assemblies, with gaps between the partition and the inner bottom and top walls of the housing, dividing the receiving cavity into a first cavity and a second cavity that are interconnected. The sample and reference material in this application are heated uniformly, resulting in good differential thermal analysis performance.

Description

Technical Field

[0001] This application relates to the technical field of thermal analysis, and in particular to a multifunctional device for differential thermal analysis. Background Technology

[0002] Thermal analyzers are primarily used to measure changes in the physical properties of substances under varying temperatures. Common types include differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and differential thermal analysis (DTA). Differential thermal analysis (DTA) is a calorimetric analysis method widely used in research on inorganic materials, organic materials, biopolymers, polymers, and complexes. Its principle involves measuring the relationship between the temperature difference between the sample and a reference material and the ambient temperature to analyze the various physical and chemical changes that occur during heating or cooling, thereby revealing the relationship between the material's structure and properties.

[0003] Differential thermal analysis is mainly achieved through a differential thermal analyzer. However, in current differential thermal analyzers, the heating of the sample and the reference material is often uneven, which affects the accuracy of differential thermal analysis. Utility Model Content

[0004] To address the problem of uneven heating between existing samples and reference materials, this application provides a multifunctional device for differential thermal analysis.

[0005] This application provides a multifunctional device for differential thermal analysis, which adopts the following technical solution:

[0006] A multifunctional device for differential thermal analysis includes: a housing with a receiving cavity inside;

[0007] The heating system is located at the bottom of the receiving cavity;

[0008] The load-bearing component includes a first load-bearing component and a second load-bearing component. A linkage component is provided between the first load-bearing component and the second load-bearing component, and the linkage component drives the first load-bearing component and the second load-bearing component to rise and fall synchronously.

[0009] An adjustment component is provided on the support component, and a tray is provided on the support component. The adjustment component is located between the tray and the support component, and the adjustment component is used to correct the horizontal position of the tray.

[0010] A partition is disposed between the first load-bearing component and the second load-bearing component. The partition has gaps between itself and the inner bottom wall and the inner top wall of the outer shell. The partition divides the receiving cavity into a first cavity and a second cavity that are connected.

[0011] By adopting the above technical solution, the first and second carrier components are driven to rise and fall synchronously through the linkage component, so that the distance between the first carrier component and the heating system is the same as the distance between the second carrier component and the heating system. This ensures that the sample and reference material on the first and second carrier components are heated evenly, minimizing the temperature difference between the sample and the reference material. By setting an adjustment component, when the tray tilts or becomes loose after long-term use, the horizontal position of the tray can be adjusted to ensure that the tray is level, thereby ensuring that the sample and reference material are heated evenly and achieving better differential thermal analysis results.

[0012] In some embodiments, the load-bearing component includes a horizontal plate, a lifting tube, and a lifting rod. The lifting rod is rotatably connected to the housing, the lifting tube is sleeved on the lifting rod and threadedly connected to the lifting rod, the lifting tube is fixedly connected to the horizontal plate, a limit rod is provided on the horizontal plate, and a guide groove is provided on the housing, with the limit rod inserted into the guide groove.

[0013] By adopting the above technical solution, the lifting rod can be rotated and the lifting tube can be raised and lowered under the guidance of the guide groove, thereby realizing the lifting and lowering of the tray, which facilitates the picking and placing of samples or reference materials on the tray and is easy to operate.

[0014] In some implementations, the crossbar is detachably connected to the tray.

[0015] By adopting the above technical solution, it is easy to install and disassemble the tray, and it is easy to replace different types of trays according to different types of samples or reference materials, thereby improving the applicability of the multifunctional device for differential thermal analysis.

[0016] In some embodiments, the adjustment assembly includes an adjustment plate, a rotating ball, and a rotating sleeve. The rotating ball is mounted on a horizontal plate, the rotating sleeve is mounted on a tray, and the rotating sleeve is rotatably fitted onto the rotating ball. An adjustment plate is rotatably connected to the side wall of the tray. An adjustment groove is provided on the adjustment plate, and a fastener is provided in the adjustment groove. The fastener passes through the adjustment groove and abuts against the horizontal plate.

[0017] By adopting the above technical solution, a rotating connection between the horizontal plate and the pallet can be realized by setting a rotating sleeve and a rotating ball. By setting an adjusting plate, the pallet can be fixed after the angle position is adjusted, so as to correct the position of the pallet and keep the pallet in a horizontal state.

[0018] In some embodiments, the linkage assembly includes a linkage rod and a transmission rod. One end of the transmission rod is disposed outside the housing, and the other end passes through the housing and is connected to the lifting rod. There are two lifting rods, which are respectively connected to the first bearing assembly and the second bearing assembly. There are also two transmission rods. Each linkage rod corresponds to one lifting rod. The linkage rod is disposed outside the housing, perpendicular to the transmission rod, and is connected to the transmission rod.

[0019] By adopting the above technical solution, the linkage rod drives the transmission rod to rotate, and the linkage rod can drive multiple transmission rods to rotate simultaneously. The transmission rod drives the lifting rod to rotate, which can simultaneously realize the lifting of two or more sets of load-bearing components, which helps to improve work efficiency and make the sample and reference material heat evenly.

[0020] In some embodiments, the heating system includes multiple heating plates connected in series, and the heating plates are evenly distributed at the bottom of the first support component and the second support component.

[0021] By adopting the above technical solution, and by setting up multiple heating plates to heat the first and second carrier components respectively, it is further helpful to ensure that the sample on the first carrier component or the reference on the second carrier component is heated evenly.

[0022] In some embodiments, the housing includes a housing and a cover, with the cover being sealed to the housing.

[0023] By adopting the above technical solution and sealing the shell and cover together, heat loss inside the shell can be minimized, thus achieving a better heating effect.

[0024] In some embodiments, a guide rod is provided at the bottom of the tray, the guide rod is rotatably connected to the tray, and a guide hole is provided on the cross plate, into which the guide rod is inserted.

[0025] By adopting the above technical solution and setting guide rods, the pallet can be guided during adjustment, which helps to achieve better adjustment results.

[0026] In some embodiments, an elastic element is fitted onto the guide rod, with one end of the elastic element contacting the bottom wall of the tray and the other end contacting the top wall of the cross plate.

[0027] By adopting the above technical solution, the pallet can be supported by setting elastic elements, and the pallet can remain stable when adjusting its horizontal position.

[0028] In some implementations, a thermally conductive coating is provided on the tray.

[0029] By adopting the above technical solution and setting a thermally conductive coating, the heating effect on the sample or reference material on the tray can be enhanced.

[0030] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0031] 1. By driving the first and second load-bearing components to rise and fall synchronously through the linkage component, the first and second load-bearing components can be driven synchronously, so that the distance between the first and second load-bearing components and the heating system is the same, thereby ensuring that the sample and reference material on the first and second load-bearing components are heated evenly and minimizing the temperature difference between the sample and the reference material.

[0032] 2. By setting up a partition, the temperature of the sample side near the reference can be minimized from being affected by the reference, while the temperature of the reference side near the sample can be minimized from being affected by the sample.

[0033] 3. By setting an adjustment component, when the tray tilts or loosens after long-term use, the horizontal position of the tray can be adjusted to ensure that the tray is level, thereby enabling the sample and reference to be heated evenly and achieving better differential thermal analysis results. Attached Figure Description

[0034] Figure 1 This is an internal cross-sectional view of a multifunctional device for differential thermal analysis in an embodiment of this application.

[0035] Figure 2 This is a side view of a multifunctional device for differential thermal analysis in an embodiment of this application.

[0036] Figure 3 This is a schematic diagram of the structure of the carrier component in the embodiments of this application.

[0037] In the picture:

[0038] 1. Outer shell; 11. Receiving cavity; 12. First cavity; 13. Second cavity; 14. Guide groove; 15. Shell; 16. Shell cover; 2. Heating system; 21. Heating plate; 3. Bearing assembly; 31. Horizontal plate; 32. Lifting pipe; 33. Lifting rod; 35. First bearing assembly; 36. Second bearing assembly; 4. Linkage assembly; 41. Linkage rod; 42. Transmission rod; 5. Adjustment assembly; 51. Adjustment plate; 52. Rotating ball; 53. Rotating sleeve; 55. Adjustment groove; 56. Fastener; 6. Guide rod; 7. Partition; 8. Tray; 9. Elastic element; 10. Limiting rod. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0041] Reference Figure 1 and Figure 2 This application provides a multifunctional device for differential thermal analysis, including a housing 1, which comprises a shell 15 and a cover 16, the shell 15 and the cover 16 being sealed together. A receiving cavity 11 is provided inside the housing 1, and a heating system 2 is disposed within the receiving cavity 11 for heating the sample and reference material. A support assembly 3 is also disposed within the receiving cavity 11, comprising a first support assembly 35 and a second support assembly 36. A linkage assembly 4 is disposed between the first support assembly 35 and the second support assembly 36, driving the first support assembly 35 and the second support assembly 36 to move synchronously up and down. By driving the first support assembly 35 and the second support assembly 36 to move synchronously up and down, the distance between the first support assembly 35 and the heating system 2 can be made the same as the distance between the second support assembly 36 and the heating system 2, thereby ensuring uniform heating of the sample and reference material on the first support assembly 3 and the second support assembly 3, and minimizing temperature differences between the sample and the reference material.

[0042] A partition 7 is provided between the first support component 35 and the second support component 36. Gaps are provided between the partition 7 and the inner top and bottom walls of the outer casing 1. The partition 7 divides the receiving cavity 11 into a first cavity 12 and a second cavity 13 that are connected. By providing gaps, heat exchange can be performed between the first cavity 12 and the second cavity 13, ensuring that the temperatures within the first cavity 12 and the second cavity 13 are the same. Furthermore, by providing the partition 7, the temperature of the sample side near the reference material can be minimized from being affected by the reference material, while simultaneously preventing the temperature of the reference material side near the sample from being affected by the sample.

[0043] The multifunctional device for differential thermal analysis also includes an adjustment component 5, which is located on a support component 3. A tray 8 is mounted on the support component 3, and the adjustment component 5 is positioned between the tray 8 and the support component 3. The tray 8 is used to hold samples or reference materials, and the adjustment component 5 is used to correct the horizontal position of the tray 8. By incorporating the adjustment component 5, when the tray 8 becomes tilted or loose after prolonged use, its horizontal position can be adjusted to ensure its levelness. This allows for more uniform heating of the sample and reference material, resulting in better differential thermal analysis performance.

[0044] Specifically, refer to Figure 1 and Figure 2 In this embodiment, the first bearing component 35 and the second bearing component 36 have the same structure. Taking one of the bearing components 35 as an example, the bearing component 3 includes a horizontal plate 31, a lifting tube 32 and a lifting rod 33. The lifting rod 33 is rotatably connected to the outer shell 1 and is connected to the linkage component 4. The lifting tube 32 is sleeved on the lifting rod 33 and threadedly connected to the lifting rod 33. The lifting tube 32 is fixedly connected to the horizontal plate 31. Multiple limiting rods 10 are provided on the horizontal plate 31. Guide grooves 14 are provided on both the outer shell 1 and the partition 7. The limiting rods 10 are inserted into the guide grooves 14.

[0045] The lifting rod 33 is rotated by the linkage component 4. The lifting rod 33 is threadedly connected to the lifting tube 32. Under the guidance of the guide groove 14 on the limiting rod 10, the lifting tube 32 rises or falls with the rotation of the lifting rod 33, thereby adjusting the bearing component 3. It is easy to understand that the linkage component 4 simultaneously drives the lifting of both sets of bearing components 3, thereby achieving synchronous lifting of the two sets of bearing components 3, keeping the two sets of bearing components 3 at the same horizontal height, and ensuring uniform heating of the sample and reference material.

[0046] Furthermore, the cross plates 31 of both sets of supporting components 3 are detachably connected to the tray 8, thereby facilitating the replacement of the tray 8 and allowing for the replacement of different trays 8 according to different types of samples and reference materials, thus improving the applicability of the multifunctional device for differential thermal analysis.

[0047] Reference Figures 1 to 3 In some embodiments, the adjusting assembly 5 includes an adjusting plate 51, a rotating ball 52, and a rotating sleeve 53. The rotating ball 52 is mounted on the horizontal plate 31, and the rotating sleeve 53 is mounted on the tray 8. The rotating sleeve 53 is rotatably fitted onto the rotating ball 52, and the rotating sleeve 53 and the rotating ball 52 are rotatably connected. The adjusting plate 51 is rotatably connected to the side wall of the tray 8. The adjusting plate 51 has an adjusting groove 55, and a fastener 56 is provided in the adjusting groove 55. The fastener 56 passes through the adjusting groove 55 and abuts against the horizontal plate 31. When the horizontal position of the tray 8 is tilted, the tray 8 can be rotated to make it tilt and return to a horizontal state. Then, the fastener 56 is used to abut against the horizontal plate 31 to fix the position of the tray 8. In this embodiment, the adjusting groove 55 is specifically a waist-shaped groove, which is opened in the vertical direction. The fastener 56 is specifically a bolt. Four adjusting plates 51 are provided, and they are respectively provided on the four side walls of the tray 8. By adjusting the positions of the four adjustment plates 51, the tray 8 can be adjusted 360°, making it easy to adjust the tray 8 to a horizontal position.

[0048] Furthermore, referring to Figure 2In this embodiment, the linkage component 4 includes a linkage rod 41 and a transmission rod 42. One end of the transmission rod 42 is disposed outside the housing 1, and the other end passes through the housing 1 and is connected to the lifting rod 33. Specifically, in this embodiment, there are two lifting rods 33, each connected to one of the two bearing components 3. There are also two transmission rods 42, with each linkage rod 41 corresponding to one lifting rod 33. The linkage rod 41 is disposed outside the housing 1, perpendicular to the transmission rod 42, and is connected to the transmission rod 42. It is easy to understand that the transmission rod 42 and the lifting rod 33 can be linked by a bevel gear or by a worm gear, and the linkage rod 41 and the transmission rod 42 can be linked by a bevel gear or by a worm gear, which can be set as needed and is not limited here.

[0049] Furthermore, referring to Figure 1 The heating system 2 includes multiple heating plates 21 connected in series and evenly distributed at the bottom of the first support component 35 and the second support component 36. In this embodiment, two heating plates 21 are provided, one at the bottom of the first support component 35 and the other at the bottom of the second support component 36, and the two heating plates 21 are symmetrically arranged relative to the partition plate 7. By providing two heating plates 21, it is possible to ensure that the sample and the reference are heated evenly, thereby ensuring the accuracy of the analysis results.

[0050] In some embodiments, a guide rod 6 is provided at the bottom of the tray 8, and the guide rod 6 is rotatably connected to the tray 8. A guide hole (not shown in the figure) is provided on the horizontal plate 31, and the guide hole is vertically arranged. The guide rod 6 is inserted into the guide hole. By providing the guide rod 6 and inserting it into the guide hole, the tray 8 can be positioned, and the tray 8 can be prevented from falling off the horizontal plate 31 as much as possible, thereby strengthening the connection between the tray 8 and the horizontal plate 31.

[0051] An elastic element 9 is fitted onto the guide rod 6. One end of the elastic element 9 contacts the bottom wall of the tray 8, and the other end contacts the top wall of the horizontal plate 31. In this embodiment, the elastic element 9 is specifically a spring, but in other embodiments it can be a spring sheet or a rubber pad, etc., which is not limited here. By setting the spring, the tray 8 can be supported, and the tray 8 can be kept stable when adjusting its horizontal position.

[0052] In some embodiments, a thermally conductive coating is provided on the tray 8. The thermally conductive coating may be a high-temperature resistant material such as graphene or nanomaterials, and is not limited thereto. In this embodiment, the partition 7 is made of a high-temperature resistant heat-insulating material, such as ceramic fiber or aluminum silicate fiber, and is not limited thereto.

[0053] The implementation principle of this application embodiment is as follows: The sample is placed on the tray 8 of the first support component 35, and the reference is placed on the tray 8 of the second support component 36. The horizontal height of the first support component 35 and the second support component 36 is synchronously adjusted by the linkage component 4 to ensure that the first support component 35 and the second support component 36 are at appropriate height positions. Then, the heating system 2 heats the sample and the reference, and the relationship between the temperature difference between the sample and the reference and the temperature is measured to analyze the various physical and chemical changes that occur during the heating process. When the horizontal position of the tray 8 is offset, the horizontal position of the tray 8 can be finely adjusted by the adjustment component 5 before use to adjust the tray 8 to a horizontal state before use. By setting the partition 7, the temperature of the side of the sample close to the reference can be minimized from being affected by the reference, and the temperature of the side of the reference close to the sample can be minimized from being affected by the sample, thereby achieving better analytical results.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multifunctional apparatus for differential thermal analysis, characterized by, include: The outer shell (1) has a receiving cavity (11) inside; A heating system (2) is provided at the bottom of the receiving cavity (11); The support component (3) includes a first support component (35) and a second support component (36). A linkage component (4) is provided between the first support component (35) and the second support component (36). The linkage component (4) drives the first support component (35) and the second support component (36) to rise and fall synchronously. An adjustment component (5) is provided on the support component (3), and a tray (8) is provided on the support component (3). The adjustment component (5) is located between the tray (8) and the support component (3). The adjustment component (5) is used to correct the horizontal position of the tray (8). A partition (7) is disposed between the first support component (35) and the second support component (36). The partition (7) has gaps between itself and the inner bottom wall and the inner top wall of the outer shell (1). The partition (7) divides the receiving cavity (11) into a first cavity (12) and a second cavity (13) that are connected to each other.

2. A multi-functional apparatus for differential thermal analysis according to claim 1, wherein: The bearing component (3) includes a horizontal plate (31), a lifting tube (32) and a lifting rod (33). The lifting rod (33) is rotatably connected to the outer shell (1). The lifting tube (32) is sleeved on the lifting rod (33) and threadedly connected to the lifting rod (33). The lifting tube (32) is fixedly connected to the horizontal plate (31). A limit rod (10) is provided on the horizontal plate (31). A guide groove (14) is provided on the outer shell (1). The limit rod (10) is inserted into the guide groove (14).

3. A multi-functional apparatus for differential thermal analysis according to claim 2, wherein: The horizontal plate (31) is detachably connected to the tray (8).

4. A multi-functional apparatus for differential thermal analysis according to claim 2, wherein: The adjustment assembly (5) includes an adjustment plate (51), a rotating ball (52), and a rotating sleeve (53). The rotating ball (52) is installed on the horizontal plate (31), and the rotating sleeve (53) is installed on the tray (8). The rotating sleeve (53) is rotatably fitted onto the rotating ball (52). The adjustment plate (51) is rotatably connected to the side wall of the tray (8). An adjustment groove (55) is provided on the adjustment plate (51), and a fastener (56) is provided in the adjustment groove (55). The fastener (56) passes through the adjustment groove (55) and abuts against the horizontal plate (31).

5. A multi-functional apparatus for differential thermal analysis according to claim 2, wherein: The linkage component (4) includes a linkage rod (41) and a transmission rod (42). One end of the transmission rod (42) is located outside the outer shell (1), and the other end passes through the outer shell (1) and is connected to the lifting rod (33). There are two lifting rods (33), which are respectively connected to the first bearing component (35) and the second bearing component (36). There are also two transmission rods (42). Each linkage rod (41) corresponds to one lifting rod (33). The linkage rod (41) is located outside the outer shell (1), and the linkage rod (41) is perpendicular to the transmission rod (42) and is connected to the transmission rod (42).

6. A multi-functional apparatus for differential thermal analysis as claimed in claim 1, wherein: The heating system (2) includes multiple heating plates (21) connected in series, and the multiple heating plates (21) are evenly distributed at the bottom of the first support component (35) and the second support component (36).

7. A multi-functional apparatus for differential thermal analysis as claimed in claim 1, wherein: The outer casing (1) includes a housing (15) and a cover (16), the cover (16) being sealed to the housing (15).

8. A multi-functional apparatus for differential thermal analysis according to claim 2, wherein: The bottom of the tray (8) is provided with a guide rod (6), which is rotatably connected to the tray (8). A guide hole is provided on the horizontal plate (31), and the guide rod (6) is inserted into the guide hole.

9. A multi-functional apparatus for differential thermal analysis according to claim 8, wherein: An elastic element (9) is sleeved on the guide rod (6). One end of the elastic element (9) contacts the bottom wall of the tray (8), and the other end contacts the top wall of the horizontal plate (31).

10. A multi-functional apparatus for differential thermal analysis as claimed in claim 1, wherein: The tray (8) is provided with a thermally conductive coating.

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