A glove box atmosphere purging device

Abstract

The present application relates to glove box gas purification technical field, disclose a kind of glove box atmosphere purification device. Wherein glove box atmosphere purification device includes reaction mechanism and adsorption mechanism, reaction mechanism includes reaction bin, light emitting piece and catalytic piece, light emitting piece and catalytic piece are placed in reaction bin, light emitting piece is used to excite catalytic piece to occur photocatalysis, the gas that passes through reaction bin is oxidized degradation, adsorption mechanism includes adsorption bin and multiple purification pieces, multiple purification pieces can be detachably installed in adsorption bin, adsorption bin is set downstream of reaction bin and is communicated with reaction bin, by preposition photocatalytic degradation combination post adsorption purification two-stage structure, can targeted oxidation removal high boiling point, strong polarity organic solvent vapor in glove box, again deeply adsorbed removal water vapor, oxygen and degradation by-product in gas, solve the problem that traditional purification mode cannot completely remove organic solvent vapor, organic pollutant accumulation leads to adsorption failure of purification column, poor regeneration effect.

Description

Technical Field

[0001] This invention relates to the field of glove box gas purification technology, and more particularly to a glove box atmosphere purification device. Background Technology

[0002] In the fields of perovskite photovoltaics, organic optoelectronic devices, and the fabrication of sensitive materials for lithium batteries, inert gas glove boxes are core fabrication equipment. The purity of the atmosphere inside the glove box directly determines the quality of material synthesis and the final performance of the devices. Among these, water vapor, oxygen, and organic solvent vapors within the glove box are the core interfering factors affecting process stability. Water vapor and oxygen can easily cause degradation and failure of sensitive functional materials such as perovskite, while the large amount of organic solvent vapors generated during the fabrication process further degrades the stability of the glove box atmosphere, severely restricting the device fabrication yield and process repeatability.

[0003] Currently, the purification and control of glove box atmosphere generally focuses on the removal of water vapor and oxygen, mainly relying on inert gas pumping and replacement and purification column adsorption and regeneration to maintain a low water and oxygen environment. However, the systemic interference caused by organic solvent vapors has long been neglected. Existing glove box purification methods are mainly divided into two types. One is inert gas cleaning and replacement, which relies on pumping inert gas to remove impurities from the box. However, the vapor density of commonly used organic solvents such as DMF and DMSO is much higher than that of inert gases such as nitrogen and argon. The light inert gas cannot effectively push and replace the high-density organic solvent vapors, resulting in the continuous accumulation of organic vapors in the box, making it impossible to achieve complete removal. Secondly, there is the high-temperature hydrogen regeneration purification method for glove boxes. This method restores the dehydration and deoxygenation capabilities of copper catalysts by desorbing moisture at high temperatures and reducing them with hydrogen. However, the adsorption strength of high-boiling-point, highly polar organic solvent vapors is much higher than that of water molecules. They can firmly adhere to the molecular sieve and copper catalyst surface, making them impossible to remove through conventional regeneration processes. Long-term use will clog the adsorption sites of the purification materials, causing a significant decrease or even complete failure of the dehydration and deoxygenation efficiency of the purification column, resulting in persistently high concentrations of water, oxygen, and organic impurities in the glove box. In summary, existing glove box purification systems only have a single water and oxygen purification function and lack effective means to remove organic solvent vapors. Technical bottlenecks such as organic solvent vapor accumulation, easy failure of purification units, and poor regeneration effects make it difficult to accurately and stably control the atmosphere in the glove box, which seriously restricts the performance improvement and large-scale application of perovskite solar cells and various inert atmosphere processes.

[0004] Therefore, there is an urgent need for a glove box atmosphere purification device that can solve the problems of existing glove box atmosphere purification systems being unable to effectively remove organic solvent vapors and having difficulty simultaneously controlling the atmosphere of water, oxygen, and organic impurities. Summary of the Invention

[0005] The purpose of this invention is to provide a glove box atmosphere purification device that can solve the problems of existing glove box atmosphere purification systems being unable to effectively remove organic solvent vapors and having difficulty simultaneously controlling the atmosphere of water, oxygen, and organic impurities.

[0006] Based on the above concept, the technical solution adopted by this invention is as follows: A glove box atmosphere purification device, comprising: The reaction mechanism includes a reaction chamber, a light-emitting element, and a catalyst. The light-emitting element and the catalyst are both placed inside the reaction chamber. The light-emitting element is used to excite the catalyst to undergo a photocatalytic reaction, thereby oxidizing and degrading the gas flowing through the reaction chamber. The adsorption mechanism includes an adsorption chamber and multiple purification components, the multiple purification components being detachably installed in the adsorption chamber, which is located downstream of the reaction chamber and communicates with the reaction chamber.

[0007] As an optional solution for the glove box atmosphere purification device, the light-emitting element is an ultraviolet lamp tube, the catalyst element is a titanium dioxide coating, and the titanium dioxide coating is applied to the inner wall of the reaction chamber.

[0008] As an optional solution for the glove box atmosphere purification device, the glove box atmosphere purification device also includes a conveying component, one end of which is connected to the air outlet of the reaction chamber, and the other end of which is connected to the air inlet of the adsorption chamber.

[0009] As an optional solution for the glove box atmosphere purification device, the conveying component is a pressure pump, which is located between the reaction chamber and the adsorption chamber to provide power for the flow of gas, thereby enabling the gas to continuously complete the photocatalytic oxidation and adsorption purification process.

[0010] As an optional solution for the glove box atmosphere purification device, the adsorption mechanism also includes a dust adsorption element, which is located inside the adsorption chamber and upstream of other purification elements, for filtering solid dust impurities in the gas.

[0011] As an optional solution for the glove box atmosphere purification device, the adsorption mechanism also includes an organic solvent vapor adsorbent, which is used to adsorb organic vapors in the gas that have not been completely degraded by the photocatalytic reaction.

[0012] As an optional solution for the glove box atmosphere purification device, the adsorption mechanism also includes a water vapor adsorption element, which is used to remove moisture from the gas; And / or, the adsorption mechanism further includes an oxygen adsorption element for removing trace amounts of oxygen from the gas.

[0013] As an optional solution for the glove box atmosphere purification device, the glove box atmosphere purification device also includes a mesh air inlet cover, which is installed over the air inlets of the reaction chamber and the adsorption chamber.

[0014] As an optional solution for the glove box atmosphere purification device, the glove box atmosphere purification device also includes a ventilation component, which is located at the air outlet of the adsorption chamber and communicates with the adsorption chamber to drive airflow circulation and deliver the purified gas to the inside of the glove box.

[0015] As an optional solution for the glove box atmosphere purification device, the glove box atmosphere purification device also includes a return pipe, which is installed in the reaction chamber. One end of the return pipe is connected to the ventilation component, and the other end passes through the side wall of the reaction chamber and is connected to the inner cavity of the glove box.

[0016] The beneficial effects of this invention are as follows: This invention proposes a glove box atmosphere purification device. The reaction mechanism includes a reaction chamber, a light-emitting element, and a catalyst. Both the light-emitting element and the catalyst are placed inside the reaction chamber. The light-emitting element excites the catalyst to undergo a photocatalytic reaction, oxidizing and degrading the gas flowing through the reaction chamber. The adsorption mechanism includes an adsorption chamber and multiple purification elements, which are detachably installed inside the adsorption chamber. The adsorption chamber is located downstream of the reaction chamber and connected to it. Through a two-stage purification structure combining photocatalytic oxidation pretreatment and deep adsorption purification, it can specifically oxidize and degrade high-boiling-point, highly polar organic solvent vapors inside the glove box, effectively solving the problems of traditional... Inert gas replacement is difficult to replace high-density organic vapors and causes continuous accumulation of organic vapors. At the same time, it avoids the drawbacks of organic solvent vapors adsorbing onto the molecular sieve and copper catalyst surface, causing adsorption site blockage and purification failure. It improves the shortcomings of traditional purification columns, such as high-temperature hydrogen regeneration, which cannot remove organic pollutants, has poor regeneration effect, and serious performance degradation. It can simultaneously and efficiently remove organic solvent vapors, water vapor, and oxygen from the glove box atmosphere, stably maintain a high-purity inert atmosphere in the glove box, and eliminate the problems of organic vapors and water oxygen interfering with perovskite crystallization and corroding functional materials, thereby improving the stability and repeatability of device fabrication process. Attached Figure Description

[0017] Figure 1 This is an isometric view of the glove box air purification device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the mesh air inlet cover provided in an embodiment of the present invention.

[0018] In the picture: 1. Reaction mechanism; 11. Reaction chamber; 12. Light-emitting component; 2. Adsorption mechanism; 21. Adsorption chamber; 22. Dust adsorption component; 23. Organic solvent vapor adsorption component; 24. Water vapor adsorption component; 25. Oxygen adsorption component; 3. Mesh air inlet cover; 4. Ventilation components; 5. Return pipe. Detailed Implementation

[0019] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention. Furthermore, it should be noted that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, not all of them.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 and Figure 2As shown, this embodiment provides a glove box atmosphere purification device. In this embodiment, the glove box atmosphere purification device includes a reaction mechanism 1 and an adsorption mechanism 2. The reaction mechanism 1 includes a reaction chamber 11, a light-emitting element 12, and a catalyst. The light-emitting element 12 and the catalyst are both placed in the reaction chamber 11. The light-emitting element 12 is used to excite the catalyst to undergo a photocatalytic reaction, thereby oxidizing and degrading the gas flowing through the reaction chamber 11. The adsorption mechanism 2 includes an adsorption chamber 21 and multiple purification elements. The multiple purification elements are detachably installed in the adsorption chamber 21. The adsorption chamber 21 is located downstream of the reaction chamber 11 and is connected to the reaction chamber 11. A two-stage series structure of upstream reaction mechanism 1 and downstream adsorption mechanism 2 is adopted. First, the organic solvent vapor in the flowing gas is oxidized and degraded through a photocatalytic reaction. Then, the purification elements in the adsorption mechanism 2 are used to carry out deep adsorption and purification of degradation products, water vapor, and oxygen, thereby simultaneously removing organic solvent vapor, water vapor, and oxygen in the glove box and continuously maintaining a high-purity inert atmosphere inside the glove box.

[0025] This device utilizes a combined approach of photocatalytic pre-degradation and deep adsorption purification to specifically remove high-boiling-point, highly polar organic vapors such as DMF and DMSO. This reduces the load on adsorbent materials from organic pollutants, protects the adsorption activity of molecular sieves and copper catalysts, improves the regeneration effect of the purification column, and ensures long-term stable water and oxygen removal capabilities. It avoids the problems of simple inert gas replacement failing to remove high-density organic solvent vapors and the continuous accumulation of organic vapors. It also prevents large amounts of organic solvent vapors from adsorbing onto the surfaces of molecular sieves and copper catalysts, clogging active sites and causing purification unit failure. Furthermore, it avoids the shortcomings of traditional high-temperature hydrogen regeneration, which fails to remove organic pollutants and suffers from continuous degradation of purification performance. It prevents organic solvent vapors and water / oxygen from jointly corroding sensitive materials, interfering with perovskite film crystallization, and causing device performance fluctuations. Additionally, the adsorbents are detachable for easy maintenance and replacement. The device is adaptable to various operating conditions, including perovskite photovoltaics, organic optoelectronic devices, and lithium battery material fabrication, improving the stability and repeatability of sensitive device fabrication processes.

[0026] Preferably, such as Figure 1 and Figure 2As shown, in this embodiment, the light-emitting element 12 is an ultraviolet lamp, and the catalyst is a titanium dioxide coating. The titanium dioxide coating is applied to the inner wall of the reaction chamber 11, enabling the construction of a stable ultraviolet photocatalytic reaction system within the reaction chamber 11. The ultraviolet light emitted by the ultraviolet lamp excites the titanium dioxide coating to generate photogenerated carriers, producing highly oxidizing and active free radicals. This causes the high-boiling-point, highly polar organic solvent vapors such as DMF and DMSO flowing through the reaction chamber 11 to undergo oxidative decomposition, completing the pre-degradation treatment of organic pollutants in the circulating gas of the glove box. Directly coating the inner wall of the reaction chamber 11 with the titanium dioxide coating can fully utilize the internal space of the reaction chamber 11 to increase the photocatalytic contact area. The ultraviolet light can directly act on the coating, eliminating the need for additional supports to fix the catalyst material, simplifying the device structure, reducing equipment costs, and making the ultraviolet lamp technology mature, easy to purchase and replace. Titanium dioxide has stable chemical properties and is resistant to inert atmospheres, allowing it to continuously exert its catalytic effect, effectively reducing the concentration of organic vapors in the gas in advance, reducing the processing load of the downstream adsorption mechanism 2, and extending the service life of the molecular sieve and copper catalyst. In other embodiments, the light-emitting element 12 may also be a xenon lamp or a mercury lamp, etc., and the catalyst may also be a rigid plate covered with titanium dioxide particles or a titanium dioxide reaction column, etc.

[0027] Preferably, in this embodiment, the titanium dioxide coating thickness is greater than 10 μm to ensure that the coating has sufficient catalytic active material, avoid the coating being too thin leading to insufficient active sites and easy wear and peeling, and ensure long-term photocatalytic degradation capability.

[0028] Optionally, in this embodiment, the maximum power of a single ultraviolet lamp is 200W-700W, which can match the glove box operating conditions with different circulating gas volumes and organic pollutant loads. This ensures photocatalytic degradation efficiency while avoiding excessive power, which would lead to energy waste and excessive temperature rise in the device. Insufficient power results in insufficient ultraviolet radiation intensity, making it difficult to fully excite titanium dioxide to complete the oxidative degradation of organic vapors; excessive power exacerbates device heating, increasing the heat dissipation burden and operating energy consumption. This power range balances catalytic effect and equipment operational stability. Preferably, in this embodiment, the maximum power of a single ultraviolet lamp is 500W. At this power, the ultraviolet light output intensity is suitable, effectively degrading high-boiling-point organic vapors such as DMF and DMSO, while avoiding the problems of insufficient degradation due to low power and significant temperature rise due to high power. In other embodiments, the maximum power of a single ultraviolet lamp can also be 200W, 300W, 400W, 600W, or 700W.

[0029] Preferably, in this embodiment, the glove box atmosphere purification device further includes a conveying component. One end of the conveying component is connected to the air outlet of the reaction chamber 11, and the other end of the conveying component is connected to the air inlet of the adsorption chamber 21, so as to realize the gas flow between the reaction chamber 11 and the adsorption chamber 21, and smoothly transport the gas after photocatalytic oxidation degradation to the adsorption chamber 21 for deep adsorption treatment, ensuring the continuous and smooth two-stage purification process.

[0030] Optionally, in this embodiment, the conveying component is a pressure pump, which is located between the reaction chamber 11 and the adsorption chamber 21 to provide power for gas flow, so that the gas can continuously complete the photocatalytic oxidation and adsorption purification process, and the gas in the glove box can be continuously circulated to ensure that organic vapor, water vapor and oxygen in the box continuously enter the purification device for treatment, and stably maintain a high-purity inert environment inside the glove box.

[0031] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the adsorption mechanism 2 also includes a dust adsorption component 22, which is located in the adsorption chamber 21 and upstream of other purification components. It is used to filter solid dust impurities in the gas, thereby intercepting solid dust impurities carried by the airflow before the gas enters the other purification components. By adding a dust filtration process at the front end of the adsorption stage of the two-stage series purification process, the dust pre-separation is completed, so that the clean gas after dust removal can then come into contact with each purification component in sequence to carry out deep adsorption purification. Pre-filtering solid dust can prevent dust from directly adhering to the surface of subsequent purification components, maintain the unobstructed pores and active sites of the purification components, ensure the adsorption efficiency of the purification components for pollutants, extend the service life of the purification components, reduce the frequency of frequent replacement of the purification components, and at the same time reduce the amount of dust that enters the glove box with the airflow to contaminate the prepared samples and sensitive devices, thereby improving the cleanliness of the atmosphere inside the glove box.

[0032] Optionally, in this embodiment, the dust adsorption element 22 is a HEPA filter, capable of capturing micron and submicron-sized solid particles, providing high filtration accuracy and suitable for high-cleanliness requirements such as perovskite device fabrication. In other embodiments, the dust adsorption element 22 can also be a sintered metal filter or a glass fiber dust collector cartridge, etc.

[0033] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, the adsorption mechanism 2 also includes an organic solvent vapor adsorbent 23. The organic solvent vapor adsorbent 23 is used to adsorb organic vapors in the gas that have not been completely degraded by the photocatalytic reaction. It complements the front-end photocatalytic oxidation degradation, and constructs a synergistic treatment path for the adsorption of residual organic vapors after photocatalytic degradation. This enhances the overall removal effect of organic pollutants in the glove box atmosphere, reduces the direct contact of undegraded organic vapors with subsequent purification components, continuously protects the adsorption active sites, delays the performance degradation of the core purification materials, extends the operating cycle of the entire adsorption mechanism 2, reduces the regeneration frequency and maintenance cost of the device, and stably maintains the high-purity inert atmosphere of the glove box.

[0034] Optionally, in this embodiment, the organic solvent vapor adsorbent 23 is an activated carbon layer. The activated carbon layer has a large specific surface area and excellent physical adsorption capacity for high-boiling-point polar organic vapors such as DMF and DMSO. It is easy to assemble and disassemble, facilitating overall replacement. In other embodiments, the organic solvent vapor adsorbent 23 can also be an organic polymer adsorption resin layer or a zeolite molecular sieve adsorption layer, etc.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the adsorption mechanism 2 further includes a water vapor adsorption element 24. The water vapor adsorption element 24 is used to remove moisture from the gas, realizing the targeted removal of moisture from the mixed gas flow after photocatalytic oxidation degradation of organic vapors. Working together with other purification elements, it completes the purification of dust, degradation products, residual water vapor, and oxygen, stabilizing the high-purity inert gas environment required for the glove box. The water vapor adsorption element 24 specifically adsorbs moisture, sharing the water vapor adsorption load of other purification elements, maintaining the adsorption capacity of various other purification elements, extending the service life of the entire adsorption mechanism 2, reducing regeneration frequency and maintenance costs, and continuously ensuring the long-term stable water and oxygen purification capability of the device.

[0036] Optionally, in this embodiment, the water vapor adsorbent 24 is a molecular sieve layer. Molecular sieve layers possess excellent water absorption selectivity, preferentially capturing water molecules in the airflow, and can be recycled through heating regeneration. In other embodiments, the water vapor adsorbent 24 can also be an alumina adsorbent layer or a silica gel adsorbent layer, etc.

[0037] Specifically, such as Figure 1 and Figure 2As shown, in this embodiment, the adsorption mechanism 2 further includes an oxygen adsorbent 25, which is used to remove trace amounts of oxygen from the gas. This novel approach simultaneously removes residual trace amounts of oxygen from the gas after photocatalytic oxidation and degradation of organic vapors. Combined with the adsorption effect of the purification components, trace oxygen removal is completed in a two-stage purification process, improving the glove box's gas composition control capability and stably constructing a high-purity, inert working environment with low oxygen and low organic vapors. The oxygen adsorbent 25 independently undertakes the task of removing trace amounts of oxygen, sharing the processing pressure of other purification components, achieving fractional adsorption treatment, optimizing the workload of each purification component, extending the service life of other purification components, and continuously controlling the oxygen content of the glove box within the process requirements. This adapts to the preparation processes of perovskite photovoltaics, organic optoelectronic devices, and other materials that are extremely sensitive to oxygen content, improving sample preparation consistency.

[0038] Optionally, in this embodiment, the oxygen adsorbent 25 is a copper catalyst layer. The copper catalyst layer possesses excellent deep deoxygenation performance, and can undergo a highly efficient oxidation-reduction reaction with trace amounts of oxygen in the flowing gas under normal temperature and inert atmosphere conditions, precisely removing residual trace oxygen from the glove box. The overall reaction process is mild and does not generate secondary pollutants. The copper catalyst layer has strong resistance to organic vapor interference and will not be corroded or degraded by small organic molecules or trace amounts of water vapor after photocatalytic degradation. It can stably cooperate with the front-end photocatalytic degradation unit, balancing high deoxygenation accuracy and long-term operational stability. Furthermore, its deoxygenation activity can be quickly restored by a conventional hydrogen regeneration process, adapting to the continuous and long-term purification operation requirements of the device. In other embodiments, the oxygen adsorbent 25 can also be a manganese-based deoxygenating material or a zirconium alloy oxygen-absorbing filler, etc.

[0039] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the structure housed in the adsorption chamber 21, from near the air inlet to near the air outlet, consists of a dust adsorbent 22, an organic solvent vapor adsorbent 23, a water vapor adsorbent 24, and an oxygen adsorbent 25. Ventilation gaps are provided between adjacent structures. This hierarchical arrangement from front to back ensures that the gas first removes solid dust impurities, then removes residual organic solvent vapors, and subsequently completes deep removal of water vapor and oxygen. This achieves a step-by-step treatment of pollutants from coarse to fine, preventing dust from covering the active sites of subsequent water vapor and oxygen adsorbents 25, and also preventing organic vapors from directly invading the water and oxygen adsorbent materials and causing poisoning and deactivation, thus ensuring the adsorption activity of the downstream molecular sieve and copper catalyst. The ventilation gaps buffer and disperse the airflow, balancing the airflow distribution inside the adsorption chamber 21, facilitating uniform gas flow through each purification layer, improving the overall utilization rate of the adsorbent material, and avoiding problems such as airflow deviation and excessively high local flow velocities leading to premature saturation and failure of local adsorbents.

[0040] Preferably, such as Figure 1 and Figure 2As shown, in this embodiment, the glove box atmosphere purification device also includes a mesh air inlet cover 3. The mesh air inlet cover 3 is installed over the air inlets of the reaction chamber 11 and the adsorption chamber 21. It can play multiple roles in rectifying and stabilizing the mixed airflow entering the device, primary filtration, and protection and isolation, effectively optimizing the overall purification conditions. The mesh air inlet cover 3 can evenly distribute the turbulent airflow drawn into the glove box, avoiding problems such as excessively fast local airflow velocity and turbulent eddies. It allows the airflow to flow smoothly and evenly through the light-emitting element 12 and the catalyst element in the reaction chamber 11 and the purification elements in the adsorption chamber 21, ensuring that the airflow in each catalytic and adsorption area is uniform, improving the photocatalytic degradation efficiency and the uniformity of deep adsorption purification, and eliminating the problems of incomplete local purification and pollutant residue caused by uneven airflow. The mesh air inlet cover 3 can also intercept solid impurities such as dust, material debris, and thin film particles inside the glove box, preventing solid foreign objects from entering the reaction chamber with the airflow. This prevents impurities from adhering to and covering the light-emitting surface of the light-emitting element 12, blocking the light source and hindering light propagation. It also prevents the active sites of the catalyst from being blocked or covered, protecting the working performance and stability of the photocatalytic reaction system from the source. Furthermore, the mesh air inlet cover 3 provides physical protection for the internal reaction and adsorption structures, effectively preventing external debris from falling and damaging the internal core purification components during maintenance, disassembly, and equipment operation vibrations. This extends the service life of the core components while not obstructing normal gas flow, minimizing airflow resistance, and ensuring the high efficiency and continuity of the glove box's air circulation purification.

[0041] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the mesh air inlet cover 3 has multiple mesh holes arranged in an array. The diameter of the mesh holes is smaller than the particle size of the catalyst and purification components, which ensures the cross-sectional area for airflow, reduces airflow resistance, and intercepts particulate debris, preventing particles from entering subsequent chambers and causing flow channel blockage. In other embodiments, the mesh holes of the mesh air inlet cover 3 can also be arranged in a staggered pattern, or the mesh hole diameter and opening ratio can be adjusted according to actual operating conditions, and are not limited to the array opening method of this embodiment.

[0042] Preferably, such as Figure 1 and Figure 2As shown, in this embodiment, the glove box atmosphere purification device also includes a ventilation component 4. The ventilation component 4 is located at the air outlet of the adsorption chamber 21 and is connected to the adsorption chamber 21. It is used to drive airflow circulation and deliver the purified gas to the inside of the glove box, thereby constructing a closed-loop airflow circulation system between the glove box and the purification device. This system drives all the gas in the box to flow continuously and at a constant speed through the reaction mechanism 1 and the adsorption mechanism 2 to complete multi-stage purification treatment, effectively preventing gas stagnation and local accumulation of pollutants in the box. It also disperses and removes residual organic solvent vapor, trace amounts of water vapor and oxygen in corners and dead corners in all directions, ensuring that the atmosphere parameters inside the glove box are uniform, consistent and stable. At the same time, the airflow circulation rate can be adjusted according to the actual preparation conditions to adapt to the purification requirements of different concentrations of organic pollutants and different water and oxygen contents, greatly improving the overall purification efficiency and continuous purification capability. It maintains the ultra-high purity inert process atmosphere inside the glove box for a long time, providing a stable and clean process environment for the preparation of perovskite thin films and lithium battery sensitive materials, and avoiding device preparation defects caused by pollutant accumulation from the root.

[0043] Optionally, such as Figure 1 and Figure 2 As shown, the ventilation component 4 is a ventilation fan, which has a sealed explosion-proof structure, is suitable for inert atmosphere conditions, and can adjust the circulating air volume to match the purification rate under different organic pollutant concentrations. In other embodiments, the ventilation component 4 can also be a circulating fan or a diaphragm vacuum pump, etc.

[0044] Preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, the glove box atmosphere purification device also includes a return pipe 5. The return pipe 5 is installed inside the reaction chamber 11. One end of the return pipe 5 is connected to the ventilation component 4, and the other end passes through the side wall of the reaction chamber 11 and is connected to the inner cavity of the glove box. Together with the ventilation component 4, a complete closed-loop airflow path is constructed to realize the autonomous circulation and return of the gas inside the glove box. This allows the trace residual pollutant gas that has not been completely purified to flow back to the reaction chamber 11 to participate in the photocatalytic oxidation degradation and adsorption deep purification process, reducing the residual content of organic solvent vapor, water vapor, and oxygen in the box, and avoiding the problem of pollutant accumulation caused by incomplete purification in a single cycle. The return pipe 5 is embedded inside the reaction chamber 11, and the waste heat of the reaction chamber 11 can be used to pre-treat the return gas, reducing the impact of low-temperature airflow on the reaction efficiency of the catalyst, ensuring the continuous and efficient photocatalytic reaction, improving the overall purification accuracy and atmosphere stability of the device, and ensuring that the inert atmosphere inside the glove box is uniform, highly pure, and controllable for a long time.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A glove box atmosphere purification device, characterized in that, include: The reaction mechanism (1) includes a reaction chamber (11), a light-emitting element (12), and a catalyst. The light-emitting element (12) and the catalyst are both placed inside the reaction chamber (11). The light-emitting element (12) is used to excite the catalyst to undergo a photocatalytic reaction to oxidize and degrade the gas flowing through the reaction chamber (11). The adsorption mechanism (2) includes an adsorption chamber (21) and multiple purification components. The multiple purification components are detachably installed in the adsorption chamber (21). The adsorption chamber (21) is located downstream of the reaction chamber (11) and is connected to the reaction chamber (11).

2. The glove box atmosphere purification device according to claim 1, characterized in that, The light-emitting element (12) is an ultraviolet lamp tube, and the catalyst is a titanium dioxide coating. The titanium dioxide coating is applied to the inner wall of the reaction chamber (11).

3. The glove box atmosphere purification device according to claim 1, characterized in that, The glove box atmosphere purification device also includes a conveyor, one end of which is connected to the air outlet of the reaction chamber (11), and the other end of which is connected to the air inlet of the adsorption chamber (21).

4. The glove box atmosphere purification device according to claim 3, characterized in that, The conveying component is a pressure pump, which is located between the reaction chamber (11) and the adsorption chamber (21) to provide power for the flow of gas and enable the gas to continuously complete the photocatalytic oxidation and adsorption purification process.

5. The glove box atmosphere purification device according to any one of claims 1-4, characterized in that, The adsorption mechanism (2) further includes a dust adsorption element (22), which is located inside the adsorption chamber (21) and upstream of the other purification elements among the plurality of purification elements, for filtering solid dust impurities in the gas.

6. The glove box atmosphere purification device according to any one of claims 1-4, characterized in that, The adsorption mechanism (2) further includes an organic solvent vapor adsorbent (23), which is used to adsorb organic vapors in the gas that have not been completely degraded by the photocatalytic reaction.

7. The glove box atmosphere purification device according to any one of claims 1-4, characterized in that, The adsorption mechanism (2) further includes a water vapor adsorption element (24), which is used to remove moisture from the gas; And / or, the adsorption mechanism (2) further includes an oxygen adsorption element (25) for removing trace amounts of oxygen from the gas.

8. The glove box atmosphere purification device according to any one of claims 1-4, characterized in that, The glove box atmosphere purification device also includes a mesh air inlet cover (3), which covers the air inlets of the reaction chamber (11) and the adsorption chamber (21).

9. The glove box atmosphere purification device according to any one of claims 1-4, characterized in that, The glove box atmosphere purification device also includes an air exchange component (4), which is located at the air outlet of the adsorption chamber (21) and communicates with the adsorption chamber (21) to drive airflow circulation and deliver the purified gas to the inside of the glove box.

10. The glove box atmosphere purification device according to claim 9, characterized in that, The glove box atmosphere purification device also includes a return pipe (5), which is installed in the reaction chamber (11). One end of the return pipe (5) is connected to the ventilation component (4), and the other end passes through the side wall of the reaction chamber (11) and is connected to the inner cavity of the glove box.

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