Device for detecting thermal stability of titania-based lanthanide near-infrared luminescent hybrid material

Abstract

This invention discloses a device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials, comprising: a heat insulation cylinder; a leveling component disposed inside the heat insulation cylinder and located on a heating furnace within the heat insulation cylinder, contacting the top surface of the heating furnace and detachably connected to the inner wall of the heat insulation cylinder, used to move spirally to the surface of the sample in a crucible and level it, the crucible being installed inside the heating furnace; and a self-opening valve disposed inside the crucible, located at the geometric center of the crucible and fixedly connected to the crucible, used to automatically open by its own rotation under the action of purge gas, introducing purge gas into the crucible. The leveling component, disposed inside the heat insulation cylinder, levels the sample surface through its spiral rotation. The automatic opening of the self-opening valve inside the crucible introduces purge gas into the crucible, reduces the pressure of the purge gas, and introduces the purge gas into the balance furnace body, eliminating the direct blowing of the purge gas onto the crucible and avoiding explosive opening of the furnace lid and damage to the support.

Description

Technical Field

[0001] This invention relates to the field of thermal stability testing technology, and in particular to a device for testing the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials. Background Technology

[0002] Titanium dioxide-based lanthanide near-infrared luminescent hybrid materials are composite materials obtained by doping lanthanide-based titanium dioxide photocatalysts, and belong to titanium dioxide complexes.

[0003] With the development of science and technology, people are paying more and more attention to the stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials. In the study of "Preparation and Properties of Titanium Dioxide-Based Lanthanide Complex Luminescent Hybrid Materials", the thermal stability of titanium dioxide-based lanthanide complex luminescent hybrid materials (hereinafter collectively referred to as samples) was studied and explored. Various methods such as infrared spectroscopy (IR), elemental analysis, SEM, X-ray powder diffraction (PXRD), thermogravimetric analysis (TGA), and photoluminescence spectroscopy (PL) were used to characterize and study their properties. Thermogravimetric analysis was used to study its thermal stability. Furthermore, when using thermogravimetric analyzers to test and study the thermal stability of materials in our teaching experiments or scientific research, we often encounter the following problems during the operation of thermogravimetric analyzers in the laboratory: 1. When purging the balance furnace of the thermogravimetric analyzer with purging gas, if the airflow is too large and not discharged in time, the pressure inside the balance furnace will increase instantaneously. If the balance furnace lid is opened at this time, the lid will burst open due to the instantaneous release of pressure; it will also cause the support to vibrate violently and be damaged. At this time, the crucible will be blown over by the strong airflow and fall upside down on the support, affecting the normal progress of the experiment or the accuracy of data measurement; 2. The sample is placed into the crucible by hand, which cannot achieve a completely uniform flat state, resulting in uneven heating of the sample and affecting the accuracy of the measurement results.

[0004] Therefore, the above problems have a significant impact on the normal conduct of the experiment and the accuracy of the data. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials. The device uses a leveling component to flatten the sample surface and a self-opening valve to automatically introduce purge gas.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials includes:

[0008] Heat insulation cylinder.

[0009] The leveling component is located inside the heat insulation cylinder, on the heating furnace inside the heat insulation cylinder, in contact with the top surface of the heating furnace, and detachably connected to the inner wall of the heat insulation cylinder. It is used to move to the surface of the sample in the crucible by spiral rotation and to level it. The crucible is installed inside the heating furnace.

[0010] The self-opening valve is located inside the crucible at its geometric center and is fixedly connected to the crucible. Under the action of the purging gas, it is used to automatically open by rotating itself to introduce the purging gas into the crucible.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] A leveling component is installed inside the heat insulation cylinder. The spiral rotation of the leveling component smooths the sample surface. The automatic opening of the self-opening valve inside the crucible introduces purge gas into the crucible and reduces the pressure of the purge gas. Then, the purge gas is introduced into the balance furnace body, eliminating the direct blowing of the purge gas onto the crucible and avoiding the furnace lid bursting open and the support being damaged.

[0013] More preferably, the leveling component includes:

[0014] The roller structure is located on the top surface of the heating furnace, inside the heat insulation cylinder, and is detachably connected to the inner wall of the heat insulation cylinder.

[0015] The leveling structure is set on the roller structure and slidably connected to the roller structure. Its working end face is in contact with the sample surface. It is used to automatically rotate along the roller structure to the sample surface under the action of gravity and scrape the sample. The roller structure is used to provide the leveling structure with a path and space for rotational movement toward the sample surface.

[0016] Using the above technical solution, the combination of the roller structure and the flat structure forms a spiral rotating component. Under the action of gravity, the sample is scraped by the spiral rotation, so that the sample surface is gradually scraped flat, ensuring that the sample is smoothed and uniform in the crucible.

[0017] More preferably, the raceway structure includes:

[0018] The roller is set on the inner wall of the heat insulation cylinder and located on the heating furnace. Its bottom surface is in contact with the top surface of the heating furnace, and its side wall is detachably connected to the inner wall of the heat insulation cylinder.

[0019] The raceway, in a spiral shape, is formed on the inner wall of the roller and is slidably connected to the paving structure, providing a path for the rotational motion of the paving structure.

[0020] The guide groove is located at the junction of the inner wall and top surface of the roller. Its outlet is integrally connected to the inlet of the raceway, and its inlet is located on the top surface of the roller. It is used to guide the paving structure into the raceway.

[0021] Using the above technical solution, the leveling structure is located in the roller, and the guide groove introduces the leveling structure into the raceway, so that the leveling structure can move from top to bottom along the raceway to the sample surface under the action of gravity, and continue to rotate on the sample surface to perform a scraping action, so that the sample is evenly filled in the crucible.

[0022] More preferably, the paving structure includes:

[0023] The vertical rod is installed inside the drum, located in the internal cavity of the drum.

[0024] The first horizontal bar is set on the vertical bar, located on one side of the vertical bar, and one end of it is fixedly connected to the side wall of the vertical bar.

[0025] The second horizontal bar is installed on the vertical bar, located below the first horizontal bar and on the other side of the vertical bar, with one end fixedly connected to the side wall of the vertical bar.

[0026] A rolling element is set on the raceway, with one side slidably connected to the raceway and the other side fixedly connected to the other end of the first crossbar and the other end of the second crossbar, respectively, for moving on the raceway.

[0027] By employing the above technical solution, it is ensured that the vertical rod is positioned in the middle of the internal cavity of the drum. Through the sliding connection between the rolling elements and the raceway, the first and second horizontal rods can be in a balanced state on both sides of the vertical rod, ensuring that the first and second horizontal rods can move at the same speed on the raceway simultaneously after the vertical rod is rotated.

[0028] Further optimization resulted in a rolling element count of 2.

[0029] Using the above technical solution, each of the two rolling elements is connected to the first crossbar and the second crossbar, and is slidably connected to the adjacent raceway, so that the vertical rod is located in the inner cavity of the drum.

[0030] Further optimized, the vertical rod is connected to the following:

[0031] The handle is located at the top of the vertical rod and is fixedly connected to the top surface of the vertical rod.

[0032] The plate is placed at the bottom of the vertical rod, with its top surface fixedly connected to the bottom surface of the vertical rod in the middle section. There is a gap between the side wall and the inner wall of the crucible, and the bottom surface is in contact with the surface of the sample.

[0033] The above technical solution incorporates a handle for easy hand rotation of the vertical rod, applying force to make it rotate. The sample is smoothed by moving a spreading plate across its surface, ensuring even distribution of the sample within the crucible and guaranteeing uniform heating.

[0034] Further optimized, the self-opening valve includes:

[0035] The valve block is located at the geometric center of the crucible. Its sidewalls are connected to the central hole of the crucible, and its interior is hollow. It is used to connect or disconnect the purge gas into the crucible by rotating it.

[0036] The valve cover is located at the geometric center of the bottom surface of the valve block, and a vent hole is opened at the center of the cover. The vent hole is connected to the internal cavity of the valve block and is used to introduce purging gas into the valve block.

[0037] The switch column is located in the internal cavity of the crucible, rotatably connected to the inside of the crucible, and is at a preset distance from the valve block, located on one side of the valve block.

[0038] The self-opening spring is sleeved on the switch post and rotatably connected to the switch post, with its end fixedly connected to the valve block.

[0039] The first guide plate is set inside the internal cavity of the valve block, with its top surface fixedly connected to the top surface of the valve block and its bottom surface fixedly connected to the top surface of the valve cover.

[0040] The second guide plate is set inside the internal cavity of the valve block. Its top surface is fixedly connected to the top surface of the valve block, its bottom surface is fixedly connected to the top surface of the valve cover, one side wall is connected to one side wall of the first guide plate, and the other side wall is fixedly connected to the inner wall of the valve block. The other side wall of the first guide plate is connected to the inner wall of the valve block. The first guide plate, the second guide plate, the top surface of the valve cover, and the crucible form a guide cavity.

[0041] The self-opening spring is located between the first guide plate and the second guide plate, and the connection between the first guide plate and the second guide plate is connected to the air guide hole.

[0042] Using the above technical solution, the first guide plate, the second guide plate, the valve cover, and the air guide hole constitute a cavity that guides the purge gas from outside the valve cover into the valve block, and reduces the pressure of the purge gas through the first and second guide plates. Under the action of airflow, a valve that opens automatically by rotation is formed, allowing the purge gas to enter the crucible. The purge gas acts on the connection between the first guide plate and the valve block, and the resulting force is applied to the inner wall of the valve block at that point. This causes the self-opening spring to be subjected to a tangential force at the connection between it and the valve block. Under this force, the self-opening spring is pushed to rotate in the direction of the force, thereby pushing the valve block to rotate away from the crucible and automatically open, allowing the purge gas to enter the crucible and the furnace body for the purpose of purging the crucible and the furnace body.

[0043] Further optimization involves a V-shaped connection between the first guide plate and the valve block.

[0044] Using the above technical solution, a bent structure is formed between the first guide plate and the valve block, so that the purging gas acts on this point to push the self-opening spring to rotate on the switch column.

[0045] A further optimization involves providing support legs at the bottom of the crucible, with the legs integrally connected to the crucible.

[0046] The heating furnace is equipped with a support frame, which is fixedly connected to the heating furnace, and the support legs are inserted into the support frame.

[0047] By adopting the above technical solution, the crucible is inserted into the heating furnace through the support legs and brackets, which improves the stability of the crucible in the heating furnace.

[0048] Further optimization involves making the air guide hole a semi-circular shape.

[0049] By adopting the above technical solution, a channel that conforms to the flow of purging gas can be formed together with the first guide plate and the second guide plate. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of this embodiment.

[0051] Figure 2 This is a schematic diagram of the raceway structure in this embodiment.

[0052] Figure 3 This is a schematic diagram of the paving structure in this embodiment.

[0053] Figure 4 This is a schematic diagram of the roller structure in this embodiment.

[0054] Figure 5 This is a schematic diagram of the self-starting valve in this embodiment.

[0055] Figure 6 This is a schematic diagram of the structure of the first guide plate and the second guide plate in this embodiment.

[0056] Figure 7 This is a schematic diagram of the valve cover in this embodiment.

[0057] Figure 8 This is a schematic diagram of the structure of the heating furnace bottom in this embodiment.

[0058] Reference numerals: 1-Insulation cylinder; 2-Flattening assembly; 21-Roller structure; 211-Roller; 212-Roller; 213-Guide groove; 22-Flattening structure; 220-Vertical rod; 221-Handle; 222-First horizontal rod; 223-Rolling element; 224-Second horizontal rod; 225-Paving plate; 3-Crucible; 31-Support leg; 4-Heating furnace; 41-Support; 5-Self-opening valve; 50-Valve block; 51-Valve cover; 511-Gas vent; 52-Switch column; 53-Self-opening spring; 54-First guide plate; 55-Second guide plate; 6-Purge pipe; 7-Insulation cavity. Detailed Implementation

[0059] The following is in conjunction with the appendix Figures 1-8 The present invention will be described in further detail below.

[0060] A device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials, such as Figure 1 As shown, it includes:

[0061] The heat insulation cylinder 1 is located on the outer wall of the heating furnace 4 inside the thermogravimetric analyzer and is used to insulate the heat of the heating furnace 4.

[0062] The leveling component 2 is set inside the heat insulation cylinder 1 and located on the heating furnace 4 inside the heat insulation cylinder 1. It is in contact with the top surface of the heating furnace 4 and is detachably connected to the inner wall of the heat insulation cylinder 1. It is used to move to the surface of the sample in the crucible 3 by spiral rotation and to level it. The crucible 3 is installed in the heating furnace 4 so that the sample is evenly filled in the crucible 3 and the sample is heated evenly.

[0063] The self-opening valve 5 is located inside the crucible 3 at its geometric center and is fixedly connected to the crucible 3. Under the action of the purge gas flow, it is used to automatically open by rotating itself to introduce the purge gas into the crucible 3, and then rotate in the opposite direction by the reaction force to return to the closed state, thus automatically connecting or disconnecting the purge gas.

[0064] A leveling component 2 is installed inside the heat insulation cylinder 1. The sample surface is leveled by the spiral rotation of the leveling component 2. The purge gas is introduced into the crucible 3 by the automatic opening of the self-opening valve 5 inside the crucible 3, and the pressure of the purge gas is reduced. Then the purge gas is introduced into the balance furnace body, which eliminates the direct blowing of the purge gas onto the crucible 3, and avoids the furnace cover bursting open and the support 41 being damaged.

[0065] Specifically, such as Figure 1 and Figure 2 As shown, the leveling component 2 in this embodiment includes:

[0066] The raceway 212 structure 21 is set on the top surface of the heating furnace 4, located inside the heat insulation cylinder 1, and is detachably connected to the inner wall of the heat insulation cylinder 1.

[0067] The leveling structure 22 is disposed on the roller track 212 structure 21 and is slidably connected to the roller track 212 structure 21. Its working end face is in contact with the sample surface. It is used to automatically rotate along the roller track 212 structure 21 to the sample surface under the action of gravity and scrape the sample. The roller track 212 structure 21 is used to provide the leveling structure 22 with a path and space for rotational movement toward the sample surface.

[0068] The combination of the roller track 212 structure 21 and the flat structure forms a spiral rotating component. Under the action of gravity, the sample is scraped by the spiral rotation, so that the sample surface is gradually scraped flat, ensuring that the sample is smoothed and uniform in the crucible 3.

[0069] Specifically, such as Figure 2 and Figure 3As shown, the raceway 212 structure 21 in this embodiment includes:

[0070] Roller 211 is set on the inner wall of the heat insulation cylinder 1 and located on the heating furnace 4. Its bottom surface is in contact with the top surface of the heating furnace 4, and its side wall is detachably connected to the inner wall of the heat insulation cylinder 1.

[0071] The raceway 212, which is spiral in shape, is formed on the inner wall of the roller 211 and is slidably connected to the paving structure 22, and is used to provide a path for the rotational motion of the paving structure 22.

[0072] The guide groove 213 is formed at the junction of the inner wall and the top surface of the roller 211. Its outlet is integrally connected to the inlet of the raceway 212, and its inlet is located on the top surface of the roller 211. It is used to guide the paving structure 22 into the raceway 212.

[0073] The leveling structure 22 is located in the roller 211. The guide groove 213 introduces the leveling structure 22 into the roller track 212, so that the leveling structure 22 can move from top to bottom along the roller track 212 to the sample surface under the action of gravity, and continue to rotate on the sample surface to perform a scraping action, so that the sample is evenly filled in the crucible 3.

[0074] Specifically, such as Figure 2 , Figure 3 as well as Figure 4 As shown, the paving structure 22 in this embodiment includes:

[0075] The vertical rod 220 is set inside the roller 211 and located in the internal cavity of the roller 211, and is used to apply rotational force to the hand.

[0076] The first horizontal bar 222 is set on the vertical bar 220 and located on one side of the vertical bar 220, with one end of it fixedly connected to the side wall of the vertical bar 220.

[0077] The second horizontal bar 224 is installed on the vertical bar 220, located below the first horizontal bar 222 and on the other side of the vertical bar 220, with one end fixedly connected to the side wall of the vertical bar 220.

[0078] Rolling element 223 is disposed on raceway 212. One side of it is slidably connected to raceway 212, and the other side is fixedly connected to the other end of first crossbar 222 and the other end of second crossbar 224, respectively, for moving on raceway 212.

[0079] The first crossbar 222 and the second crossbar 224 ensure that the vertical rod 220 is positioned in the middle of the internal cavity of the roller 211. The sliding connection between the rolling element 223 and the raceway 212 ensures that the first crossbar 222 and the second crossbar 224 are in a balanced state on both sides of the vertical rod 220, guaranteeing that the first crossbar 222 and the second crossbar 224 move simultaneously at the same speed on the raceway 212 after the vertical rod 220 is rotated.

[0080] Specifically, such as Figure 2 As shown, in this embodiment, there are two rolling elements 223. Each of the two rolling elements 223 is connected to the first crossbar 222 and the second crossbar 224, and is slidably connected to the adjacent raceway 212, so that the vertical rod 220 is in the cavity inside the roller 211.

[0081] Specifically, such as Figure 2 As shown, in this embodiment, the vertical rod 220 is connected to the following:

[0082] A handle 221 is located at the top of the vertical rod 220 and is fixedly connected to the top surface of the vertical rod 220. Specifically, the handle 221 is a T-shaped handle 221, which facilitates hand gripping and rotating the vertical rod 220.

[0083] A laying plate 225 is set at the bottom of the vertical rod 220. The top surface of its middle section is fixedly connected to the bottom surface of the vertical rod 220, and there is a gap between the side wall and the inner wall of the crucible 3. The bottom surface of the laying plate 225 is a horizontal plane, which facilitates smoothing the sample surface.

[0084] Specifically, such as Figure 1 and Figure 2 As shown, the handle 221 in this embodiment facilitates the rotation of the vertical rod 220 by hand, applying force to the vertical rod 220 to make it rotate. The sample is smoothed by the movement of the spreading plate 225 on the sample surface, so that the sample is evenly distributed in the crucible 3, ensuring that the sample is heated evenly.

[0085] Specifically, such as Figure 5 , Figure 6 as well as Figure 7 As shown, the self-opening valve 5 in this embodiment includes:

[0086] The valve block 50 is located at the geometric center of the crucible 3. Its sidewall is connected to the central hole of the crucible 3. The inside is hollow and it is used to connect or disconnect the purging gas into the crucible 3 by rotating it.

[0087] A valve cover 51 is located at the geometric center of the bottom surface of the valve block 50, and a vent 511 is provided at its center. The vent 511 communicates with the internal cavity of the valve block 50 and is used to introduce purge gas into the valve block 50. The valve cover 51 is concave, with the concave opening facing the purge gas, so that a larger amount of purge gas can be introduced into the interior of the valve block 50 from the vent 511.

[0088] The switch post 52 is disposed in the internal cavity of the crucible 3, is rotatably connected to the inside of the crucible 3, has a preset distance from the valve block 50, and is located on one side of the valve block 50.

[0089] The self-opening spring 53 is sleeved on the switch post 52 and rotatably connected to the switch post 52, with its end fixedly connected to the valve block 50. When the purging gas acts on the inner wall of the valve block 50, it will push the valve block 50 to move tangentially, thereby providing a thrust to the self-opening spring 53, pushing the self-opening spring 53 to rotate around the switch post 52, so as to open the center hole of the crucible 3.

[0090] The first guide plate 54 is disposed in the internal cavity of the valve block 50. Its top surface is fixedly connected to the top surface of the valve block 50, and its bottom surface is fixedly connected to the top surface of the valve cover 51. The first guide plate 54 is S-shaped, and while guiding the flow of the purging gas, it reduces its pressure through its own shape.

[0091] The second guide plate 55 is disposed within the internal cavity of the valve block 50. Its top surface is fixedly connected to the top surface of the valve block 50, its bottom surface is fixedly connected to the top surface of the valve cover 51, one side wall is connected to one side wall of the first guide plate 54, and the other side wall is fixedly connected to the inner wall of the valve block 50. The other side wall of the first guide plate 54 is also connected to the inner wall of the valve block 50. The first guide plate 54, the second guide plate 55, the top surface of the valve cover 51, and the crucible 3 form a guide cavity. A portion of the second guide plate 55 is a horizontal plate, which can align with the straight portion of the semi-circular gas guide hole 511, smoothly guiding the purging gas into the guide cavity. The other part is an arc-shaped plate with a quarter-circle arc surface. It forms a wider reverse flow guiding area with the first guide plate 54, so that the purge gas entering the guide cavity can be slightly buffered in this area, reducing the pressure and changing the flow direction of the purge gas here. This causes the purge gas to concentrate and flow towards the angle between the first guide plate 54 and the inner wall of the valve block 50, thereby providing a tangential force to the inner wall of the valve block 50.

[0092] The second guide plate 55 is J-shaped, including a bent portion and a vertical portion. One end of the vertical portion is integrally connected to the bent portion, and the other end is integrally connected to the first guide plate 54 to form the inlet of the guide cavity 3. The end of the bent portion of the second guide plate 55 is integrally connected to the inner wall of the heat insulation cylinder 1, forming a reflux zone with the inner wall of the heat insulation cylinder 1 and the first guide plate 54. Since the first guide plate 54 and the inner wall of the heat insulation cylinder 1 form an angle, the purge gas flows along the inner wall of the bent portion of the second guide plate 54, the inner wall of the heat insulation cylinder 1, and the inner wall of the first guide plate 54 in this reflux zone. After being blocked by the angle, it moves along the inner wall of the first guide plate 54, thus forming a reflux. During the formation of the reflux, the purge gas applies an impact force to the first guide plate 54. Under the action of this force, the heat insulation cylinder 1 is pushed to deflect at a certain angle in the direction of the force, and the heat insulation cylinder 1 drives the self-opening spring 53 to deflect at a certain angle.

[0093] The self-opening spring 53 is located between the first guide plate 54 and the second guide plate 55, and the connection between the first guide plate 54 and the second guide plate 55 is connected to the air guide hole 511.

[0094] The first guide plate 54, the second guide plate 55, the valve cover 51, and the air guide hole 511 constitute a cavity that guides the purge gas from outside the valve cover 51 into the valve block 50, and reduces the pressure of the purge gas through the first guide plate 54 and the second guide plate 55. Under the action of the airflow, a valve that opens automatically by rotation is formed, allowing the purge gas to enter the crucible 3. The purge gas acts on the connection between the first guide plate 54 and the valve block 50, and the force generated is applied to the inner wall of the valve block 50 at that point. This causes the self-opening spring 53 to be subjected to a tangential force at the connection between it and the valve block 50. Under this force, the self-opening spring 53 is pushed to rotate in the direction of the force, thereby pushing the valve block 50 to rotate away from the crucible 3 and open automatically, allowing the purge gas to enter the crucible 3 and the furnace body for the purpose of purging the crucible 3 and the furnace body.

[0095] Specifically, such as Figure 8 As shown, in this embodiment, the connection between the first guide plate 54 and the valve block 50 is V-shaped, and a bending structure is formed between the first guide plate 54 and the valve block 50 so that the purging gas acts at this point to push the self-opening spring 53 to rotate on the switch column 52.

[0096] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the bottom of the crucible 3 is provided with a support leg 31, which is integrally connected to the crucible 3.

[0097] A bracket 41 is provided on the heating furnace 4, and the bracket 41 is fixedly connected to the heating furnace 4. The support leg 31 is inserted into the bracket 41.

[0098] The crucible 3 is inserted into the heating furnace 4 by means of support legs 31 and bracket 41, which improves the stability of the crucible 3 on the heating furnace 4 and prevents shaking.

[0099] Specifically, such as Figure 1 and Figure 2 As shown, the air guide hole 511 in this embodiment is a semi-circular hole, which, together with the first guide plate 54 and the second guide plate 55, can form a channel that conforms to the flow of the purging gas.

[0100] Please combine Figures 1-8 The working principle and process of this application are described as follows:

[0101] Preparatory work for purging before the experiment

[0102] Before testing the thermal stability of the titanium dioxide-based lanthanide near-infrared luminescent hybrid material, a purge gas is required for cleaning. Specifically, the crucible 3 is inserted into the support 41, and purge gas is introduced from the bottom of the insulation cylinder 1 into the purge pipe 6. After passing through the insulation chamber 7, the gas enters the crucible 3 inside the heating furnace 4. First, the purge gas is drawn into the guide cavity through the gas guide hole 511 by the valve cover 51 of the self-opening valve 5. The gas then converges along the guide cavity at the V-shaped bend, where a flow is applied. The impact force pushes the inner wall of valve block 50 tangentially, thereby causing the self-opening spring 53 to rotate. Simultaneously, the purging gas flows back along the S-shaped flow of the first guide plate 54 at the bend, and continues to circulate with the newly introduced purging gas within the guide cavity back to the bend, circulating on the inner wall of valve block 50. This continuously pushes the self-opening spring 53 to deflect, achieving the rotation purpose, and also reduces the pressure of the purging gas, preventing excessive pressure from bursting the furnace cover. After valve block 50 rotates, it opens the central hole of crucible 3, allowing purging gas to enter the space between crucible 3 and the heating furnace 4 and heating cylinder for purging. After purging, the purging gas supply stops, and the reaction force of the self-opening spring 53 pushes valve block 50 back to the central hole position to close the central hole, completing the pre-experiment purging process. The entire purging process involves reducing the pressure of the purging gas as it enters the crucible 3 through the self-opening valve 5, thus preventing the purging gas from bursting the furnace lid due to excessive pressure; it also avoids blowing directly onto the bottom of the crucible 3, thus preventing the crucible 3 from being overturned and the support 41 from being damaged.

[0103] Experimental procedure:

[0104] Add titanium dioxide-based lanthanide near-infrared luminescent hybrid material thermal powder into crucible 3. Place roller 211 into furnace 4 inside heat insulation cylinder 1. Install leveling structure 22 in roller 211. Specifically, place rolling element 223 on second crossbar 224 onto guide groove 213 and rotate handle 221. Rotation of handle 221 drives vertical rod 220 to rotate, which in turn drives first crossbar 222 and second crossbar 224 to rotate. Rolling element 223 on second crossbar 224 enters raceway 2 along guide groove 213. As the first crossbar 222 continues to slide, the rolling element 223 on the first crossbar 222 gradually approaches and falls onto the guide groove 213. With the rotation of the first crossbar 222, it gradually enters the raceway 212. Under the action of gravity, the entire leveling structure 22 moves axially on the spiral raceway 212. When the leveling plate 225 contacts the sample surface, it smooths the sample surface under the action of inertia, so that the sample is evenly filled in the crucible 3, ensuring uniform heating during subsequent heating. This directly eliminates the need for manual smoothing of the sample surface, ensuring the accuracy of the measurement results.

[0105] This specific embodiment is merely an explanation of the invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of protection of this invention, they are protected by patent law.

Claims

1. A device for detecting the thermal stability of a titanium dioxide-based lanthanide near-infrared luminescent hybrid material, characterized in that it comprises: include: Insulation cylinder (1); A leveling component (2) is disposed inside the heat insulation cylinder (1), located on the heating furnace (4) inside the heat insulation cylinder (1), in contact with the top surface of the heating furnace (4), and detachably connected to the inner wall of the heat insulation cylinder (1). It is used to move to the surface of the sample in the crucible (3) by spiral rotation and to level it. The crucible (3) is installed inside the heating furnace (4). The leveling component (2) includes: a roller track structure (21), disposed on the top surface of the heating furnace (4), located inside the heat insulation cylinder (1), and detachably connected to the inner wall of the heat insulation cylinder (1); a leveling structure (22), disposed on the roller track structure (21), slidably connected to the roller track structure (21), and its working end face is in contact with the sample surface. It is used to automatically rotate along the roller track structure (21) under gravity to the surface of the sample and to scrape the sample. The structure (21) is used to provide the paving structure (22) with a path and space for rotational movement toward the sample surface; the roller structure (21) includes: a roller (211), which is disposed on the inner wall of the heat insulation cylinder (1) and located on the heating furnace (4), with its bottom surface in contact with the top surface of the heating furnace (4) and its side wall detachably connected to the inner wall of the heat insulation cylinder (1); a roller (212), which is spiral in shape and is opened on the inner wall of the roller (211) and is slidably connected to the paving structure (22), for providing the paving structure (22) with a path for rotational movement; a guide groove (213), which is opened at the connection between the inner wall and the top surface of the roller (211), with its outlet integrally connected to the inlet of the roller (212) and its inlet located on the top surface of the roller (211), for guiding the paving structure (22) into the roller (212); A self-opening valve (5) is disposed inside the crucible (3), located at the geometric center of the crucible (3), and fixedly connected to the crucible (3). Under the action of the purging gas, it is used to automatically open by rotating itself to introduce the purging gas into the crucible (3). The self-opening valve (5) includes: a valve block (50) disposed at the geometric center of the crucible (3), whose sidewall is connected to the central hole of the crucible (3), and whose interior is hollow, used to connect or disconnect the purging gas into the crucible (3) by rotation; a valve cover (50) 1) A gas guide hole (511) is provided at the geometric center of the bottom surface of the valve block (50), which is connected to the internal cavity of the valve block (50) and is used to introduce purging gas into the valve block (50); a switch post (52) is provided in the internal cavity of the crucible, is rotatably connected to the inside of the crucible (3), has a preset distance from the valve block (50), and is located on one side of the valve block (50); a self-opening spring (53) is sleeved on the switch post (52) and is connected to the valve block (50) at the same distance. The valve stem (52) is rotatably connected, and its end is fixedly connected to the valve block (50); the first guide plate (54) is disposed in the internal cavity of the valve block (50), its top surface is fixedly connected to the top surface of the valve block (50), and its bottom surface is fixedly connected to the top surface of the valve cover (51); the second guide plate (55) is disposed in the internal cavity of the valve block (50), its top surface is fixedly connected to the top surface of the valve block (50), its bottom surface is fixedly connected to the top surface of the valve cover (51), and one side wall is connected to one side wall of the first guide plate (54). The other side wall is fixedly connected to the inner wall of the valve block (50), and the other side wall of the first guide plate (54) is connected to the inner wall of the valve block (50). The first guide plate (54), the second guide plate (55), the top surface of the valve cover (51), and the crucible (3) form a guide cavity. The self-opening spring (53) is located between the first guide plate (54) and the second guide plate (55), and the connection between the first guide plate (54) and the second guide plate (55) is connected to the air guide hole (511).

2. The thermal stability detection device for titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 1, characterized in that, The paving structure (22) includes: The vertical rod is disposed inside the roller (211) and located in the internal cavity of the roller (211); The first horizontal bar (222) is disposed on the vertical bar, located on one side of the vertical bar, and one end of it is fixedly connected to the side wall of the vertical bar; The second horizontal bar (224) is disposed on the vertical bar, located below the first horizontal bar (222) and on the other side of the vertical bar, with one end of it fixedly connected to the side wall of the vertical bar; A rolling element (223) is disposed on the raceway (212), with one side slidably connected to the raceway (212) and the other side fixedly connected to the other end of the first crossbar (222) and the other end of the second crossbar (224), respectively, for moving on the raceway (212).

3. The device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 2, characterized in that, The number of the rolling elements (223) is 2.

4. The device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 2, characterized in that, The vertical rod is connected to: A handle (221) is provided at the top of the vertical rod and is fixedly connected to the top surface of the vertical rod; A plate (225) is placed at the bottom of the vertical rod, with its top surface in the middle part fixedly connected to the bottom surface of the vertical rod, and a gap between the side wall and the inner wall of the crucible (3), and the bottom surface in contact with the surface of the sample.

5. The thermal stability detection device for titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 1, characterized in that, The connection between the first guide plate (54) and the valve block (50) is V-shaped.

6. The device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 1, characterized in that, The bottom of the crucible (3) is provided with a support leg (31), and the support leg (31) is integrally connected to the crucible (3). The heating furnace (4) is provided with a bracket (41), the bracket (41) is fixedly connected to the heating furnace (4), and the support leg (31) is inserted into the bracket (41).

7. The device for detecting the thermal stability of titanium dioxide-based lanthanide near-infrared luminescent hybrid materials according to claim 1, characterized in that, The air guide hole (511) is a semi-circular hole.

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