Reagent storage device for chemical experiment

Abstract

The invention relates to the field of chemical reagent storage, in particular to a reagent storage device for chemical experiments. The invention provides a chemical experiment reagent storage device which comprises a storage cabinet, the interior of the storage cabinet is divided into an upper compartment and a lower compartment, an exhaust pipe and an exhaust fan are arranged on the top wall of the storage cabinet, each compartment is provided with a closed closing door, and glass facilitating observation is arranged on the closing door on the upper side. Symmetrically distributed guide frames are fixedly connected to the inner wall of the upper compartment, a rotating plate is rotationally connected to an opening of each guide frame, and a torsional spring is connected between the rotating plate and the adjacent guide frame. Through linkage of the automatic sealing device and the highly toxic gas monitoring system, the cabinet door is locked in time, and gas diffusion is prevented; a fool-proof mechanism ensures cooperative operation of two persons, and errors are avoided; the storage box collects leaked liquid, the rotating plate controls the guide frame channel to be opened and closed, storage and taking convenience, leakage prevention performance and emergency treatment efficiency are optimized, and the safety of a laboratory is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of chemical reagent storage, and more particularly to a reagent storage device for chemical experiments. Background Technology

[0002] In modern scientific research and industrial production, chemical reagents, as indispensable basic materials, are widely used in the synthesis, separation, qualitative and quantitative analysis of substances. They are important tools for chemists to conduct experimental research and can be called "the eyes of science."

[0003] In practical applications, chemical reagents are typically stored in reagent bottles or test tubes, housed in dedicated cabinets. While this storage method meets basic needs, it has significant shortcomings in terms of safety. For example, in the event of a leak, existing reagent storage cabinets often fail to effectively prevent unauthorized personnel from opening them, leading to further exacerbation of the leak. This problem not only endangers the safety of operators but may also cause irreversible environmental damage, significantly increasing the storage risks of chemical reagents, especially in high-frequency use environments such as laboratories and factories, where the potential safety hazards cannot be ignored.

[0004] Based on the above situation, there is an urgent need for a reagent storage device for chemical experiments. Summary of the Invention

[0005] In order to overcome the shortcomings of existing chemical reagent storage cabinets in terms of safety design, especially the inability to automatically prevent unauthorized personnel from opening the cabinet when a chemical reagent leak occurs, which leads to the expansion of the leak range, environmental pollution and threats to human health, the technical problem is to provide a chemical experimental reagent storage device.

[0006] A reagent storage device for chemical experiments includes a storage cabinet, which is divided into upper and lower compartments. The top wall of the storage cabinet is equipped with an exhaust pipe and an exhaust fan. Each compartment has a sealed door, and the upper sealed door has a glass panel for easy observation. Symmetrically distributed guide frames are fixed to the inner wall of the upper compartment. Each guide frame has a rotating plate rotatably connected to its opening. A torsion spring is connected between each guide frame and an adjacent guide frame. The torsion spring is wound around the adjacent rotating plate. A reagent rack is slidably connected between the two guide frames. The reagent rack has symmetrically distributed handles.

[0007] In a preferred embodiment of the present invention, a plurality of locking members are fixedly connected to the outer side of the reagent rack along the circumferential direction, and a storage box with a top opening is locked between them. The top wall of the storage box is in sealed contact with the bottom wall of the reagent rack, and the bottom wall of the reagent rack has evenly distributed leakage holes.

[0008] In a preferred embodiment of the present invention, each of the symmetrically distributed guide frames is provided with an electric slide rail, and each slide rail is slidably connected to a slider. A sealing cover is assembled between two sliders by a snap-fit ​​method. The bottom of the sealing cover has a slot that matches the reagent bottle cap. An electrochemical sensor is installed on the inner side of the top wall of the storage cabinet, and it is electrically connected to the electric slide rail through a control module.

[0009] In a preferred embodiment of the present invention, the inner side of the upper closed door is provided with locking members symmetrically distributed vertically, each of which is provided with a plug. The top and bottom sides of the upper compartment are provided with plug holes. Each locking member is fixedly connected with a second rack. The upper closed door is rotatably connected with a knob, and a gear is fixedly connected to its inner side. The gear meshes with two second racks.

[0010] In a preferred embodiment of the present invention, a support frame is fixedly connected to the sealing cover, and a first rack is fixedly connected to it, the first rack meshing with a gear.

[0011] In a preferred embodiment of the present invention, each locking element is provided with a mark representing an indication, one of which is a YES mark representing safety and the other is a NO mark representing danger.

[0012] In a preferred embodiment of the present invention, the upper closed door is slidably connected with symmetrically distributed pins, each with a guide slope on its side that is close to the other. Each pin is connected to the upper closed door by a tension spring, which is wound around the adjacent pin. Each locking member has a circular retaining ring on the side close to the pin.

[0013] In a preferred embodiment of the present invention, the inlet of the exhaust pipe on the top wall of the storage cabinet is slidably connected with symmetrically distributed sealing members. Each sealing member is rotatably connected with a first guide member. Each first guide member is slidably connected with a tension member. The tension member and the adjacent first guide member are connected by a return spring. The return spring is wound around the adjacent tension member. The two tension members are rotatably connected by a rotating shaft.

[0014] In a preferred embodiment of the present invention, a fixed rod is fixedly connected to the top wall of the storage cabinet, and a lower pressure frame is slidably connected to it. The lower pressure frame is connected to the fixed rod by a storage spring, which is wound around the fixed rod. One of the sliders passes through the lower pressure frame. The lower pressure frame has a slot on the side near the rotating shaft, and the rotating shaft is located exactly in the slot.

[0015] In a preferred embodiment of the present invention, a lifting frame is slidably connected to the top wall of the reagent rack, and a squeezing frame is symmetrically fixed to the lifting frame. A second guide is fixed to each guide frame, and a wedge is engaged inside each guide frame. A rod is provided between the wedge and the adjacent second guide. The second guide and the wedge inside it are engaged through the rod. The squeezing frame slides within the adjacent second guide.

[0016] Compared with existing technologies, the present invention has the following advantages: The present invention, through the linkage between the automatic sealing device of the upper compartment and the highly toxic gas monitoring system, can lock the cabinet door in time to prevent the spread of toxic gases; the foolproof mechanism ensures two-person collaborative operation and avoids accidents caused by single-person errors; the storage box collects leaked liquids to prevent cross-contamination and dangerous reactions; the rotating plate controls the opening and closing of the guide rack channel to avoid obstruction during the transfer of leaked highly toxic chemical reagents to a dedicated emergency storage container. This not only optimizes the convenience of storage and retrieval, leakage prevention performance and emergency handling efficiency, but also significantly reduces safety hazards and effectively improves laboratory safety.

[0017] This invention achieves automatic closure of the exhaust pipe through a mechanical linkage device, effectively preventing the spread of highly toxic gases to the external environment in the event of a leak. When the concentration of highly toxic gas is detected to exceed a preset threshold, the system automatically activates, driving the sealing component to tightly adhere to and seal the exhaust pipe inlet, significantly improving sealing performance, avoiding safety accidents and casualties caused by toxic gas leaks, ensuring a smooth switch between normal ventilation and emergency closure, and greatly enhancing the safety and reliability of the laboratory environment.

[0018] This invention, by incorporating a lifting frame within the reagent rack and utilizing the inclined surfaces of the squeezing frame and the inclined block, achieves the function of automatically lifting reagent bottles when they are pulled out of the rack and automatically lowering them when pushed back. This improves the efficiency and accuracy of reagent retrieval for laboratory personnel, effectively avoids collisions and wear of reagent bottles caused by frequent handling, reduces the risk of contamination or leakage, and enhances the safety and reliability of experimental operations. Furthermore, in emergency scenarios such as highly toxic gas leaks, by disconnecting the inclined block from the second guide, the lifting frame can be ensured to move smoothly without vertical displacement, thereby achieving stable coverage of the reagent rack by the sealing cap and further enhancing the safety performance of the storage cabinet. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of the present invention.

[0020] Figure 2 A three-dimensional structural diagram of the guide frame, reagent rack, and rotating plate of the present invention.

[0021] Figure 3 A three-dimensional structural cross-sectional view of the slider, sealing cover, and locking component of this invention.

[0022] Figure 4 A three-dimensional structural cross-sectional view of the components of the present invention, including the sealing door, locking element, and first rack.

[0023] Figure 5 A three-dimensional structural diagram of the components such as the pin, tension spring, and knob of the present invention.

[0024] Figure 6 A three-dimensional structural diagram of the locking member, the second rack, and the gear of the present invention.

[0025] Figure 7 A three-dimensional structural diagram of the components of the present invention, including the fixing rod, the first guide member, and the lower pressure frame.

[0026] Figure 8 A three-dimensional structural cross-sectional view of the closure member, tension member, and return spring of the present invention.

[0027] Figure 9 A three-dimensional structural cross-sectional view of the lifting frame, the compression frame, and the second guide of the present invention.

[0028] Figure 10 A three-dimensional structural diagram of the lifting frame and the extrusion frame of the present invention.

[0029] The components include: 1. Storage cabinet; 11. Enclosed door; 12. Guide frame; 121. Turning plate; 122. Torsion spring; 13. Reagent rack; 131. Locking component; 14. Storage box; 15. Electric slide rail; 151. Slider; 16. Enclosed cover; 17. Support frame; 18. First rack; 19. Gear; 191. Knob; 110. Second rack; 111. Locking component; 112. Pin; 113. Tension spring; 114. Electrochemical sensor; 2. Enclosure component; 21. First guide component; 22. Tension component; 23. Lowering frame; 24. Reset spring; 25. Storage spring; 26. Fixing rod; 3. Lifting frame; 31. Squeezing frame; 32. Second guide component; 33. Inclined block; 34. Insert rod. Detailed Implementation

[0030] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions herein are used to explain the present invention, but are not intended to limit the present invention.

[0031] Example 1: A reagent storage device for chemical experiments, such as... Figure 1 and Figure 2As shown, the system includes a storage cabinet 1 as the main structure, which is divided into upper and lower compartments. The upper compartment is used to store volatile, flammable, or other high-risk chemical reagents, while the lower compartment is used to store more stable reagents. This separates the storage of different types or properties of chemical reagents, thereby improving safety. The top wall of the storage cabinet 1 is equipped with an exhaust pipe and an exhaust fan, which are responsible for efficiently purifying and safely discharging the volatile toxic gases, ensuring the safety of the laboratory environment. Each compartment is equipped with a sealed door 11 to prevent the volatile gases from leaking into the laboratory. The upper sealed door 11 is equipped with glass for easy observation.

[0032] Symmetrically distributed guide frames 12 are fixed to the inner wall of the upper compartment. Each guide frame 12 has a rotating plate 121 rotatably connected to its opening. A torsion spring 122 is connected between each guide frame 12 and the adjacent guide frame 12. The torsion springs 122 are wound around the adjacent rotating plates 121. A reagent rack 13 is slidably connected between two guide frames 12. The reagent rack 13 has multiple fan-shaped grids along its inner circumference and multiple round holes on its top plate. This not only keeps the reagent bottles upright and prevents them from tipping over, but also allows different types of reagent bottles to be stored separately, avoiding confusion and cross-contamination. The reagent rack 13 is equipped with symmetrically distributed handles, making it convenient for users to pick up and put down reagent bottles, thus improving the ease of operation.

[0033] When laboratory personnel need to access chemical reagents, they open the corresponding compartment's sealed door 11 according to the type or properties of the reagent. For example, if storing high-risk reagents, first open the upper sealed door 11 and smoothly pull out the reagent rack 13 using the handle. Then, as needed, place the reagent bottle vertically in the corresponding sector compartment, or remove the reagent bottle from the sector compartment. After storage or retrieval, push the reagent rack 13 back to its original position and close the sealed door 11.

[0034] During long-term use, chemical reagent bottles may crack due to aging or external forces. When these bottles are placed in reagent rack 13, the reagents inside may leak due to cracks or accidental impacts, thus contaminating reagent rack 13 and its internal environment. Furthermore, if multiple chemical reagents leak and mix simultaneously, it may trigger a violent chemical reaction, leading to serious safety hazards. Therefore, a leak-proof device needs to be designed to effectively collect and isolate leaked liquids, preventing cross-contamination and hazardous reactions.

[0035] like Figure 3As shown, specifically, multiple locking members 131 are fixedly connected to the outer side of the reagent rack 13 along the circumferential direction, and a storage box 14 with a top opening is locked between them. The top wall of the storage box 14 is in sealed contact with the bottom wall of the reagent rack 13. The storage box 14 has multiple fan-shaped cavities corresponding to the fan-shaped grid inside. The bottom wall of the reagent rack 13 has evenly distributed perforations. When it is necessary to remove the storage box 14, the storage box 14 can be rotated counterclockwise by a certain angle to disengage the storage box 14 from the locking members 131, and then the storage box 14 can be directly removed from the bottom of the reagent rack 13.

[0036] When a reagent bottle breaks due to cracks or impacts, the leaked chemical liquid will flow into the corresponding fan-shaped cavity in the storage box 14 through the leak hole. The storage box 14 separates the leaked liquid to prevent it from contaminating the components, and also prevents multiple reagents from mixing and causing violent chemical reactions, thereby avoiding potential safety accidents.

[0037] When highly toxic chemical reagents leak inside storage cabinet 1, especially volatile highly toxic gases, the leak source must be sealed quickly to cut off the diffusion path of the toxic gas. Therefore, an automatic sealing device is designed in the upper compartment of storage cabinet 1 to promptly isolate the leak source and prevent further leakage of toxic gas into the storage cabinet.

[0038] Specifically, each of the symmetrically distributed guide frames 12 is equipped with an electric slide rail 15, and each slide rail 151 is slidably connected inside. A sealing cover 16 is assembled between two slide rails 151 by a snap-fit ​​method. The bottom of the sealing cover 16 has a slot that matches the cap of the reagent bottle. When the sealing cover 16 covers the reagent rack 13, the cap of the reagent bottle inside is precisely embedded in the slot, realizing rapid sealing of the leakage source. An electrochemical sensor 114 is installed on the inner side of the top wall of the storage cabinet 1 to monitor the concentration of highly toxic gas in the compartment in real time. When the preset threshold is reached, the control module sends a start signal to the electric slide rail 15.

[0039] When a highly toxic chemical reagent leaks and releases highly toxic gas, the electrochemical sensor 114 monitors the gas concentration in the compartment in real time. Once the concentration reaches a set threshold, the control module immediately activates the electric slide rail 15. The electric slide rail 15, through the slider 151, moves the sealing cover 16 downwards, eventually covering the reagent rack 13, forming a sealed environment. This effectively cuts off the connection between the leak source and the internal space of the storage cabinet, preventing further diffusion of toxic gas.

[0040] When a highly toxic gas leaks, the sealing cover 16 will automatically lower to cover the reagent rack 13. At this time, the experimenter can check the position of the sealing cover 16 through the observation window in the upper sealing door 11 to determine whether a highly toxic reagent leak has occurred in the storage cabinet 1, or to confirm that the upper compartment is filled with highly toxic gas. Therefore, to prevent other experimenters from accidentally opening the compartment filled with toxic gas, the locking operation must be manually performed immediately after the electrochemical sensor 114 detects a toxic gas leak to prevent subsequent personnel from being injured or killed due to accidental inhalation of toxic gas.

[0041] like Figures 4-6 As shown, specifically, the inner side of the upper closed door 11 is provided with locking members 111 that are symmetrically distributed vertically, each of which is provided with a plug. The top and bottom sides of the upper compartment are provided with insertion holes. When the plug on the closed door 11 is inserted into the corresponding insertion hole, the upper closed door 11 can be reliably locked, preventing the experimenter from accidentally opening it, thereby effectively preventing the subsequent experimenter from being injured or killed by inhaling toxic gas.

[0042] Each locking component 111 is fixedly connected to a second rack 110. The upper closed door 11 is rotatably connected to a knob 191, and a gear 19 is fixedly connected to its inner side. The gear 19 is located between the two second racks 110 and meshes with the two second racks 110 to form a gear 19 transmission system, which is used to drive the locking component 111 to complete the locking action.

[0043] If the locking mechanism is activated manually, the operator can turn knob 191 to drive gear 19 to rotate. Since gear 19 meshes with the two second racks 110, the gear 19 drives the two locking components 111 to move in opposite directions. The inserts on the locking components 111 will accurately insert into the holes on both sides of the top and bottom of the upper compartment, thus reliably locking the upper closed door 11. At this time, the upper closed door 11 cannot be opened outwards from the outside of the storage cabinet, ensuring safety.

[0044] Each locking component 111 is equipped with an indicator, one being a "YES" sign for safety and the other a "NO" sign for danger. The locking status can be visually determined from the outside. If a "NO" sign is observed, it indicates that the compartment is locked and there is a danger; if a "YES" sign is observed, it indicates that the compartment is safe to open. This design significantly improves the safety and warning effectiveness of the device, effectively avoiding the risk of personal injury due to misoperation.

[0045] During the operation of the storage cabinet, if the operator does not carefully check the position of the sealing cover 16 and directly opens the upper sealing door 11, it may still lead to serious injury or death. To minimize such risks, the locking mechanism needs to be further optimized to achieve its linkage function with the sealing cover 16. When the electrochemical sensor 114 detects a leak of highly toxic gas, the system should be able to automatically activate the locking mechanism.

[0046] Specifically, a support frame 17 is fixedly connected to the sealing cover 16, and a first rack 18 is fixedly connected to it. The first rack 18 also meshes with a gear 19. As mentioned above, when the sealing cover 16 moves downwards to cover the reagent rack 13, it will drive the first rack 18 to move downwards synchronously through the support frame 17. Since the first rack 18 meshes with the gear 19, it drives the gear 19 to rotate. Through the gear 19 transmission system, it drives the two second racks 110 to move vertically, thereby pushing the locking member 111 to move in opposite directions. This allows the insert on the locking member 111 to accurately insert into the insertion holes on both sides of the top and bottom of the upper compartment, realizing the automatic locking of the upper sealing door 11.

[0047] Upon discovering a leak of highly toxic gas inside storage cabinet 1, emergency response procedures must be initiated immediately. Specific measures include: evacuating all personnel from the site and prohibiting unauthorized personnel from entering; and, in accordance with the "Regulations on the Safety Management of Hazardous Chemicals," strictly adhering to a two-person operation system when handling highly toxic chemical reagents. The core of this system is that, in the event of a leak or poisoning, two-person operation allows for timely mutual rescue, preventing the accident from escalating due to improper handling by a single person.

[0048] Therefore, when it is necessary to open the upper closed door 11 to handle the leaked reagent in an emergency, a foolproof mechanism must be designed to ensure that the operation process complies with the requirement of two-person collaboration.

[0049] Specifically, the upper closed door 11 is slidably connected with symmetrically distributed pins 112, and the sides of the pins that are close to each other are provided with guide slopes to facilitate the smooth transition of the locking mechanism. The distance between the two pins 112 is precisely calculated so that they cannot be operated with one hand at the same time. Both hands must be used to pull the two pins 112 outward, thereby ensuring the mandatory operation of two people.

[0050] Each latch 112 is connected to the upper closed door 11 by a tension spring 113, which is wound around the adjacent latch 112 to provide a return force. In addition, each locking member 111 has a circular retaining ring on the side near the latch 112 for mechanical linkage of locking and unlocking functions.

[0051] In the locked state, the circular retaining ring of the locking member 111 presses against the inclined surface of the pin 112, causing the pin 112 to slide outward and the tension spring 113 to deform. After the circular retaining ring passes the pin 112, under the elastic force of the tension spring 113, the pin 112 inserts into the circular retaining ring, completing the mechanical locking of the locking member 111 and restricting its vertical movement.

[0052] When it is necessary to open the upper closed door 11 for emergency handling, first evacuate all personnel on site and prohibit unauthorized personnel from entering the leak area. In accordance with the "Regulations on the Safety Management of Hazardous Chemicals", the two-person operation system must be strictly implemented. Both operators must wear personal protective equipment that meets the standards, including chemical protective clothing, gas masks, protective gloves and protective boots, and ensure that the equipment is in good working order. The first operator uses both hands to pull the two pins 112 respectively, forcing the pins 112 to disengage from the circular retaining ring of the locking part 111, and the tension spring 113 deforms.

[0053] The second operator turns knob 191 in the opposite direction, causing gear 19 to rotate in the opposite direction. This drives locking member 111 to move in opposite directions via second rack 110 until the insert block exits the insertion hole, and the circular retaining ring is disengaged from pin 112. At this point, the locking state of the upper closed door 11 is completely released. The first operator releases pin 112, and pin 112 automatically resets under the elastic force of tension spring 113.

[0054] After the upper closed door 11 is completely released from its locked state, a portable gas detector is used to monitor the leak area in real time to determine the leak concentration and diffusion range. Based on the detection results, it is determined whether it is necessary to further evacuate the surrounding area or activate a higher level of emergency response.

[0055] Transfer the leaked highly toxic chemical reagents to a dedicated emergency storage container to prevent further spread. The specific procedure is as follows: One operator can support the storage box 14 from the bottom with one hand and press the sealing cap 16 firmly against the reagent rack 13 with the other hand; using both hands together, pull the reagent rack 13 out of the cabinet. The sealing cap 16 will disengage from the slider 151, and simultaneously, the reagent rack 13 will press against the rotating plate 121, causing it to flip upwards and open, thus twisting the torsion spring 122; once the reagent rack 13 is completely removed, the rotating plate 121 will flip in the opposite direction and return to its original position under the action of the torsion spring 122; place the entire storage box 14, reagent rack 13, sealing cap 16, and the inner reagent bottles together into the emergency storage container to prevent further evaporation of toxic gases.

[0056] Thoroughly clean the leaked area using specialized adsorbents (such as activated carbon or neutralizing agents), properly collect the waste generated during the cleanup process, and hand it over to a professional organization for harmless treatment. Normal operation can only be resumed after the concentration of toxic gas in storage cabinet 1 and the laboratory where it is located has been reduced to a safe range.

[0057] This implementation system uses an automatic sealing device in the upper compartment that is linked to a highly toxic gas monitoring system to lock the cabinet door in time and prevent the spread of toxic gases. A foolproof mechanism ensures two-person collaborative operation and avoids accidents caused by single-person errors. The storage box 14 collects leaked liquids to prevent cross-contamination and dangerous reactions. The turntable 121 controls the opening and closing of the guide frame 12 channel to prevent obstruction during the transfer of leaked highly toxic chemical reagents to a dedicated emergency storage container. This not only optimizes the convenience of storage and retrieval, leak prevention performance and emergency response efficiency, but also significantly reduces safety hazards and effectively improves laboratory safety.

[0058] like Figure 7 and Figure 8 As shown, in a laboratory environment, the leakage of highly toxic gases is a potential safety hazard. When only trace amounts of gas evaporate from the upper compartment of storage cabinet 1, this gas is usually not highly toxic, and because the concentration is low, it does not reach the preset detection threshold, thus failing to trigger the electrochemical sensor 114. These trace amounts of gas can be normally discharged through the exhaust pipe and exhaust fan, without causing significant impact on the environment or personnel.

[0059] However, in certain special circumstances, such as a reagent container rupture, a large amount of highly toxic gas may leak. In this case, the amount of leaked toxic gas may rapidly exceed a preset threshold. If measures are not taken in time, these highly toxic gases may diffuse into the external environment through exhaust pipes and exhaust fans, causing serious safety accidents and resulting in more casualties. Therefore, to ensure safety, a mechanism needs to be designed to automatically shut off the exhaust pipe to prevent further leakage of toxic gas when the amount of leaked toxic gas reaches the detection threshold of the electrochemical sensor 114.

[0060] Specifically, to achieve automatic opening and closing control of the exhaust pipe, symmetrically distributed sealing members 2 are slidably connected at the inlet of the exhaust pipe on the top wall of the storage cabinet 1 to control the opening and closing of the exhaust pipe. Each sealing member 2 is rotatably connected to a first guide member 21, and each first guide member 21 is slidably connected to a tension member 22. The tension member 22 is connected to the adjacent first guide member 21 through a return spring 24. The return spring 24 is wound around the adjacent tension member 22 to provide restoring force. The two tension members 22 are rotatably connected through a rotating shaft to ensure that the two move synchronously.

[0061] In addition, a fixed rod 26 is fixedly connected to the top wall of the storage cabinet 1, and a lower pressure frame 23 is slidably connected to it. The lower pressure frame 23 is connected to the fixed rod 26 by a storage spring 25, which is wrapped around the fixed rod 26 to provide a reset function. One of the sliders 151 passes through the lower pressure frame 23. The lower pressure frame 23 has a slot on the side near the rotating shaft, and the rotating shaft is located exactly in the slot, thereby realizing the mechanical linkage between the tension member 22 and the lower pressure frame 23.

[0062] When the leakage of highly toxic gas is large and reaches a preset threshold, the system will automatically activate the closing device to quickly seal the exhaust pipe through mechanical transmission. Specifically, when the electric slide rail 15 moves the sealing cover 16 downward via the slider 151, the slider 151 will contact the lower pressure frame 23. As the slider 151 continues to move downward, the lower pressure frame 23 moves downward along with it. At this time, the storage spring 25 deforms, and at the same time drives the lower pressure frame 23 to pull the tension member 22 downward via the rotating shaft. The tension member 22 further drives the two sealing members 2 to move inward through the first guide member 21, so that the two sealing members 2 are tightly fitted together, thereby completely sealing the exhaust pipe and preventing the toxic gas from spreading outward.

[0063] Furthermore, as the lower pressure frame 23 continues to drive the tension member 22 downward, and the sealing member 2 is fully closed, the tension member 22 will continue to move downward relative to the first guide member 21. At this time, the return spring 24 deforms, further pushing the two sealing members 2 to press together, significantly improving the sealing performance when the exhaust pipe is closed.

[0064] This embodiment achieves automatic closure of the exhaust pipe through a mechanical linkage device, effectively preventing the spread of highly toxic gases to the external environment in the event of a leak. When the concentration of highly toxic gases exceeds a preset threshold, the system automatically activates, driving the sealing component 2 to tightly adhere to and seal the exhaust pipe inlet, significantly improving sealing performance, avoiding safety accidents and casualties caused by toxic gas leaks, ensuring a smooth switch between normal ventilation and emergency closure, and greatly enhancing the safety and reliability of the laboratory environment.

[0065] Example 2: As Figure 9 and Figure 10 As shown, in the laboratory, the names of chemical reagent bottles are usually labeled on the bottle itself. However, when the reagent bottle is placed in reagent rack 13, most of it is recessed into the rack, with only the cap exposed. This makes it difficult for the lab technician to directly see the name on the bottle when retrieving the reagent. To confirm the type of reagent, the technician often needs to remove the bottle from the rack 13 multiple times for inspection. If the correct reagent is not retrieved on the first attempt, repeated operations are required, significantly reducing work efficiency.

[0066] Furthermore, during frequent handling, reagent bottles may be subjected to unnecessary collisions or abrasions, increasing the risk of contamination or leakage and further affecting experimental safety and accuracy. Therefore, it is urgent to design a lifting mechanism that automatically raises the internal reagent bottles during the pulling out of the reagent rack 13, thereby facilitating the experimenter to quickly identify and accurately retrieve the target reagent.

[0067] Specifically, a lifting frame 3 is slidably connected to the top wall of the reagent rack 13. Its main function is to provide support for the reagent bottle and realize automatic lifting. When the reagent bottle is placed in the reagent rack 13, the bottom of the reagent bottle is pressed on the lifting frame 3. The gravity ensures that the two are in close contact, thereby ensuring the stability of the lifting process.

[0068] The lifting frame 3 is symmetrically fixed with extrusion frames 31. Each guide frame 12 is fixed with a second guide member 32, and each guide member 12 has a wedge block 33 inserted inside it to guide the extrusion frame 31 to move along a predetermined trajectory. Each wedge block 33 is provided with a rod 34 between it and the adjacent second guide member 32. The second guide member 32 and the wedge block 33 inside it are engaged by the rod 34. The extrusion frame 31 slides in the adjacent second guide member 32, and the vertical displacement of the lifting frame 3 is achieved by the guiding effect of the inclined surface of the wedge block 33.

[0069] When the experimenter needs to access the chemical reagents, they first open the upper closed door 11 and pull the reagent rack 13 outward using the handle. At this time, the lifting frame 3 and the squeezing frame 31 on it move outward accordingly. During the movement, the squeezing frame 31 slides upward along the inclined plane of the inclined block 33. Because the inclined plane is set with a front-high and back-low orientation, the lifting frame 3 will move upward relative to the reagent rack 13, thereby driving the reagent bottles on it to rise synchronously, so that the reagent bottles extend out of the reagent rack 13.

[0070] When the reagent rack 13 is fully extended, the reagent bottle also extends to a visible position, allowing the experimenter to easily identify the name on the bottle and quickly and accurately retrieve the target reagent. After use, the reagent rack 13 is pushed back to its original position, the squeezing frame 31 slides down the inclined plane of the inclined block 33, and the lifting frame 3 descends and returns to its initial position, with the reagent bottle stably placed back into the reagent rack 13.

[0071] As mentioned above, after a highly toxic gas leaks inside storage cabinet 1, when opening the upper sealed door 11 to transfer the leaked highly toxic chemical reagents to a dedicated emergency storage container, the reagent rack 13 and storage box 14 need to be pulled out of the cabinet. The specific operation is as follows: First, the operator needs to pull the plug 34 inward a certain distance to disconnect the connection between the inclined block 33 and the second guide 32.

[0072] Then, pinch the insertion rod 34 and move it outward, causing the inclined block 33 to be pushed out of the second guide 32, thus freeing up the slide at the bottom of the second guide 32. At this time, the inclined block 33 no longer obstructs the longitudinal movement path of the squeezing frame 31. Next, as the reagent rack 13 and the storage box 14 are pulled out of the cabinet, the lifting frame 3 and the squeezing frame 31 on it move outward accordingly. During this process, the squeezing frame 31 moves smoothly out along the slide at the bottom of the second guide 32, ensuring that the lifting frame 3 does not shift vertically throughout the process, so that the sealing cover 16 can be firmly placed on the reagent rack 13.

[0073] This embodiment achieves the function of automatically raising the reagent bottle when it is pulled out of the reagent rack 13 and automatically lowering it when it is pushed back by using the inclined surfaces of the squeezing frame 31 and the inclined block 33. This improves the efficiency and accuracy of the experimenter in taking out the reagent, effectively avoids the collision and wear of the reagent bottle caused by frequent picking and putting, reduces the risk of contamination or leakage, and improves the safety and reliability of the experimental operation. In addition, in emergency scenarios such as the leakage of highly toxic gas, by disconnecting the connection between the inclined block 33 and the second guide 32, it is ensured that the lifting frame 3 moves smoothly without vertical displacement, thereby achieving stable coverage of the reagent rack 13 by the sealing cover 16, further enhancing the safety performance of the storage cabinet 1.

[0074] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A reagent storage device for chemical experiments, comprising a storage cabinet (1) divided into upper and lower compartments, wherein an exhaust pipe and an exhaust fan are provided on the top wall of the storage cabinet (1), and each compartment is provided with a sealed door (11), the upper sealed door (11) being provided with a glass panel for easy observation, characterized in that: The inner wall of the upper compartment is fixed with symmetrically distributed guide frames (12). Each guide frame (12) has a rotating plate (121) rotatably connected to its opening. Each guide frame (12) is connected to a torsion spring (122) with the adjacent guide frame (12). The torsion spring (122) is wound around the adjacent rotating plate (121). A reagent rack (13) is slidably connected between two guide frames (12). The reagent rack (13) is provided with symmetrically distributed handles.

2. The reagent storage device for chemical experiments as described in claim 1, characterized in that: Multiple locking pieces (131) are fixedly attached to the outside of the reagent rack (13) along the circumferential direction, and a storage box (14) with a top opening is locked between them. The top wall of the storage box (14) is in sealed contact with the bottom wall of the reagent rack (13). The bottom wall of the reagent rack (13) has evenly distributed leakage holes.

3. The reagent storage device for chemical experiments as described in claim 2, characterized in that: The symmetrically distributed guide frames (12) are each equipped with an electric slide rail (15), and each slide rail (151) is connected to a slider. A sealing cover (16) is assembled between two sliders (151) by a snap-fit ​​method. The bottom of the sealing cover (16) has a slot for matching the reagent bottle cap. An electrochemical sensor (114) is installed on the inner side of the top wall of the storage cabinet (1), and it is electrically connected to the electric slide rail (15) through a control module.

4. A reagent storage device for chemical experiments as described in claim 3, characterized in that: The upper closed door (11) has symmetrically distributed locking parts (111) on its inner side, each with a plug. The top and bottom sides of the upper compartment are provided with plug holes. Each locking part (111) is fixedly connected with a second rack (110). The upper closed door (11) is rotatably connected with a knob (191), and a gear (19) is fixedly connected to its inner side. The gear (19) meshes with the two second racks (110).

5. A reagent storage device for chemical experiments as described in claim 4, characterized in that: A support frame (17) is fixedly connected to the closed cover (16), and a first rack (18) is fixedly connected to it. The first rack (18) and the gear (19) also mesh with each other.

6. A reagent storage device for chemical experiments as described in claim 5, characterized in that: Each locking element (111) is marked with an indication, one of which is a YES mark for safety and the other is a NO mark for danger.

7. A reagent storage device for chemical experiments as described in claim 6, characterized in that: The upper closed door (11) is slidably connected with symmetrically distributed pins (112), and each pin (112) is provided with a guide slope on the side that is close to each other. Each pin (112) is connected to the upper closed door (11) by a tension spring (113), and the tension spring (113) is wound around the adjacent pin (112). Each locking member (111) is provided with a circular retaining ring on the side close to the pin (112).

8. A reagent storage device for chemical experiments as described in claim 7, characterized in that: The storage cabinet (1) has symmetrically distributed closures (2) slidably connected to the inlet of the exhaust pipe on the top wall. Each closure (2) is rotatably connected to a first guide (21). Each first guide (21) is slidably connected to a tension member (22). The tension member (22) is connected to the adjacent first guide (21) by a return spring (24). The return spring (24) is wound around the adjacent tension member (22). The two tension members (22) are rotatably connected by a rotating shaft.

9. A reagent storage device for chemical experiments as described in claim 8, characterized in that: A fixed rod (26) is fixedly connected to the top wall of the storage cabinet (1), and a lower pressure frame (23) is slidably connected to it. The lower pressure frame (23) is connected to the fixed rod (26) by a storage spring (25), which is wrapped around the fixed rod (26). One of the sliders (151) passes through the lower pressure frame (23). The lower pressure frame (23) has a slot on the side near the rotating shaft, and the rotating shaft is located exactly in the slot.

10. A reagent storage device for chemical experiments as described in claim 9, characterized in that: The top wall of the reagent rack (13) is slidably connected to a lifting frame (3), and a squeezing frame (31) is symmetrically fixed to the lifting frame (3). A second guide (32) is fixed to each guide frame (12), and a wedge (33) is snapped into each wedge (33). A rod (34) is provided between the wedge (33) and the adjacent second guide (32). The second guide (32) and the wedge (33) inside it are snapped together by the rod (34). The squeezing frame (31) slides in the adjacent second guide (32).

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