Goods shelf sealing structure for low-oxygen insect killing

Abstract

The invention relates to the technical field of tobacco leaf storage, and discloses a shelf sealing structure for low-oxygen insect disinfestation, the shelf sealing structure comprises a shelf body and a plastic film, first sealing assemblies are distributed on the outer surface of the shelf body at equal intervals, and second sealing assemblies are distributed on the periphery of the bottom end of the shelf body; the first sealing assembly and the second sealing assembly are each provided with a sealing groove, the peripheral edge of the plastic film is connected with the first sealing assembly and the second sealing assembly in a sealed mode through the sealing grooves, and therefore a complete and independent sealed space is constructed in the goods shelf body, and interference of external temperature and humidity changes on the internal environment can be effectively blocked; the stable temperature and humidity conditions needed by tobacco mellowing are maintained, the problems of mildewing and uneven mellowing are solved, dust peculiar smell and pollutant volatile smell in the storage environment can be thoroughly isolated, the purity of the fragrance of the tobacco is guaranteed, and forming of the high-quality fragrance style is assisted.

Description

Technical Field

[0001] This invention relates to the field of tobacco storage technology, specifically to a shelf sealing structure for low-oxygen insect control. Background Technology

[0002] Tobacco is one of my country's important economic crops and a crucial raw material for the cigarette industry, with enormous economic value. However, improving the quality of tobacco leaves depends on a stable and controllable storage environment. Sealing is the core technology for achieving this goal. By regulating oxygen participation, maintaining stable temperature and humidity, and isolating external odors, the aging reaction of tobacco leaves is ensured to proceed at the expected rate and direction, ultimately resulting in superior color, aroma, and taste.

[0003] Currently, there are several conventional solutions for the sealing structure of shelves for tobacco leaf storage and aging in the industry. These mainly include using ordinary steel plates or sheet metal to directly splice together to form a enclosure structure, fixing it with bolts, and then filling the gaps with ordinary rubber strips; or using an integral canvas or plastic film to cover the shelf, and securing the edges with ropes or simple pressure strips to achieve a seal. However, the existing technical solutions have the following significant shortcomings, making it difficult to meet the strict sealing requirements of tobacco leaf aging: Insufficient sealing reliability and low oxygen control accuracy: Gaps are easily generated at the joints of ordinary board splicing structures due to assembly errors. Conventional rubber strips lack good elastic compensation ability and cannot completely fill the gaps. In addition, general-purpose rubber strips have poor aging resistance and deformation resistance. After long-term use, they are prone to cracking and falling off, resulting in excessive penetration of external oxygen, causing excessive oxidation of tobacco leaves and directly causing a decline in quality.

[0004] Weak temperature and humidity control capabilities: The existing sealed structure has insufficient insulation, moisture-proof and waterproof performance. Ordinary boards or covering materials have a high thermal conductivity coefficient, which cannot effectively block external temperature and humidity fluctuations. This results in poor microenvironment stability inside the shelf, unbalanced enzyme and chemical reaction rates, and problems such as tobacco leaf mold and uneven aging.

[0005] Poor odor isolation: The presence of gaps in the joints or the inherent air permeability defects of the sealing material make it easy for odors from the external environment (such as dust odors in the storage environment, volatile odors from surrounding pollutants, etc.) to penetrate the storage space, damaging the purity of the tobacco leaf's own aroma and affecting the formation of the aroma style of the tobacco leaf after aging.

[0006] In summary, existing shelf sealing structures have deficiencies in terms of sealing reliability, environmental control capabilities, and odor isolation, and cannot accurately meet the stringent requirements for a sealed environment during the storage and aging of tobacco leaves. Summary of the Invention

[0007] The purpose of this invention is to provide a shelf sealing structure for low-oxygen pest control. The shelf has a first sealing component and a second sealing component on its outer periphery. A plastic film is sealed between the first sealing component and the second sealing component and is continuously compressed by sealing elements and elastic elements, so that the entire shelf body forms a sealed space to provide maintenance space for subsequent controlled atmosphere storage. The entire sealing structure is simple and quick, with good sealing effect. It can achieve efficient sealing without changing the core structure of the shelf, and significantly improve the quality stability of tobacco leaf storage and aging and the efficiency of warehouse management.

[0008] This invention is achieved through the following technical solution: A shelf sealing structure for low-oxygen insect control, comprising: The shelf body has first sealing components evenly distributed on its outer surface and second sealing components distributed around its bottom edge. Both the first and second sealing components are provided with sealing grooves. A plastic film, the four edges of which are respectively sealed and connected to the first sealing component and the second sealing component through the sealing groove, and a sealing element for pressing the plastic film is pressed into the sealing groove, so that a sealed space is formed inside the shelf body; The sealing element is a hollow structure, and its internal space is filled with high-pressure gas. The sidewalls of the sealing groove are fitted with elastic elements at intervals. When the sealing element is filled with high-pressure gas, the protrusions on the elastic elements deform and extend towards the top outer surface of the sealing element.

[0009] In this solution, a first sealing component evenly spaced on the outer surface of the shelf body, a second sealing component around the bottom, and matching sealing grooves, combined with a plastic film, achieve full circumferential coverage. A hollow high-pressure sealing element then presses the film tightly. Simultaneously, the protrusions of the elastic elements on the sidewalls of the sealing groove deform and extend after the sealing element is inflated, further pressing against the top outer side of the sealing element. This design utilizes the excellent elastic deformation capability provided by the high-pressure gas inside the sealing element to adapt to the minute morphological differences between the sealing groove and the film surface, fully filling the tiny gaps. Furthermore, the active pressing of the elastic element forms a double seal, completely blocking external oxygen, moisture, dust, and... The design effectively prevents odor penetration, avoiding excessive oxidation, mold growth, and aroma contamination of tobacco leaves. Simultaneously, this structure creates a complete, independent, and sealed space within the shelving unit, effectively blocking fluctuations in external temperature and humidity. This provides a solid guarantee for the stable environment required for tobacco aging, reducing problems such as mold growth and uneven aging caused by temperature and humidity imbalances. It also helps isolate external pests, preventing their intrusion. Furthermore, the overall structural design is simple and reasonable, easy to install and operate, and compatible with various frame-type shelving systems. It achieves efficient sealing without altering the core structure of the shelving, significantly improving the quality stability of tobacco storage and aging, as well as warehouse management efficiency.

[0010] As a further solution for sealed shelving, the sealing groove is a dovetail groove or T-shaped groove structure. Utilizing the "flared" or "barbed" structural form of the groove, it can provide stronger restraint and fixation for the edges of the plastic film and the subsequently embedded seals. This effectively avoids problems such as film displacement and seal detachment that are prone to occur in traditional straight groove structures, ensuring that the connection between the plastic film and the first and second sealing components remains tight and stable. Simultaneously, this groove structure allows for a larger area of ​​contact between the seals (such as flame-retardant sealing strips or hollow high-pressure seals) and the groove wall, fully filling the gaps within the groove, further improving the sealing reliability of the sealing groove area, and reducing the risk of external oxygen and odors seeping into the shelving through the gaps in the sealing groove.

[0011] As a further embodiment of the sealed shelving, the first sealing assembly includes a first sealing seat plate and a second sealing seat plate; The first sealing plate is located on the upper surface of the shelf body and is evenly distributed along the length of the upper surface. The second sealing plate is located on the side of the shelf body and is evenly distributed along the width of the upper surface. This allows the two types of sealing plates to accurately cover the key areas of the upper surface and the key areas of the side of the shelf body, avoiding sealing dead corners caused by the scattered layout or incomplete coverage of traditional sealing components. At the same time, the evenly distributed design also makes the subsequent laying of plastic film more regular, reducing film wrinkles or damage caused by uneven stress. Meanwhile, the plastic film is sealed and connected to adjacent first sealing plates and adjacent second sealing plates through corresponding sealing grooves. The ends of all plastic films are sealed and connected to the second sealing component, which allows the plastic film to form a continuous and gapless sealing cover layer on the outer surface of the shelf body. This further strengthens the sealing connection between the first sealing component and the second sealing component, effectively blocking the infiltration of external oxygen and odors from the sealing component connection. It also improves the integrity of the entire sealing structure's enclosure of the internal space of the shelf body, better maintains the stability of temperature and humidity in the sealed space, and provides a more reliable sealing environment for tobacco storage and aging.

[0012] As a further embodiment of the sealed shelving, the second sealing component includes a sealing base plate. The sealing base plate is sealed to the ground and surrounds the shelving body. The sealing groove is located on its upper surface. By fully covering the perimeter area where the bottom of the shelving contacts the ground, it avoids the side gaps that occur in traditional shelving due to the lack of an overall enclosure structure. At the same time, through the sealed connection with the ground, it directly blocks external moisture from seeping in through the gap between the ground and the bottom of the shelving, and also prevents dust and odors in the storage environment from entering from the bottom. This effectively solves the pain point of the bottom being prone to moisture and contamination in tobacco storage. The sealing groove on the upper surface of the sealing base plate can precisely seal the end of the plastic film connected to the first sealing component. After the plastic film extends from the upper surface and sides of the shelving body to the bottom, it can be fixed and sealed through the sealing groove, forming a continuous and uninterrupted overall sealing structure from top to side to bottom. This avoids the problem of disconnection between the bottom and the side and top seals, further ensuring the integrity of the sealed space inside the shelving body.

[0013] As a further solution for sealed shelving, the gap between the sealed bottom plate and the ground is filled with sealant. Filling the gap between the sealed bottom plate and the ground with sealant can fill the tiny gaps caused by differences in ground flatness and assembly errors of the sealed bottom plate, and block the hidden leakage channels that are prone to exist at the bottom in traditional sealed structures.

[0014] As a further solution for sealed shelving, the upper surfaces of the first and second sealing seats are provided with multiple sealing grooves. The arrangement of multiple sealing grooves provides flexible adaptation space for the overlapping and bonding of plastic films. Appropriate sealing grooves can be selected for overlapping and fixing according to the size of the plastic film, laying requirements, or sealing accuracy requirements, avoiding problems such as film edge misalignment or loose bonding caused by a single fixed sealing groove. Simultaneously, the edges of adjacent plastic films overlap and bond within a certain sealing groove, and the overlapping portion is stably fixed within the sealing groove, effectively preventing film displacement or curling due to changes in storage environment temperature and humidity or slight external forces, ensuring a long-lasting and stable sealing effect at the joints. Furthermore, the multiple sealing grooves also form sealing redundancy; even if the bonding part in one sealing groove shows slight aging due to long-term use, other sealing grooves can still ensure the integrity of the overall sealing structure, further improving the reliability and durability of the shelving seal.

[0015] As a further embodiment of the sealed shelving, the first sealing assembly and the second sealing assembly also include a sealing element. The sealing element is embedded in the sealing groove and presses the plastic film, which can effectively limit the displacement and curling of the film under temperature and humidity fluctuations or slight external force interference in the storage environment, ensuring that the connection between the film and the sealing assembly is always tight and maintaining a long-term stable sealing effect.

[0016] As a further embodiment of the sealed shelving, the elastic elements are evenly spaced along the side wall of the sealing groove, further enhancing the sealing reliability of the sealing groove and effectively blocking the infiltration of external oxygen, storage dust odors, and volatile gases of pollutants.

[0017] As a further embodiment of the sealed shelving, the elastic element also includes a force-bearing part located on the bottom wall of the sealing groove. This force-bearing part transmits the deformation force received to the protrusion through the deformation body. This not only enhances the tightness of the fit between the elastic element and the sealing element, further filling the tiny gaps between the sealing groove, the sealing element, and the plastic film, thus improving the overall sealing reliability, but also makes the deformation force of the elastic element more balanced, reducing elastic fatigue or failure caused by local stress concentration and extending the service life of the elastic element. At the same time, it allows the high-pressure elastic seal of the sealing element and the active pressing of the elastic element to form a more synergistic dual sealing effect, effectively blocking the intrusion of external oxygen, moisture, odors, and pests.

[0018] As a further embodiment of the sealed shelving, the first and second sealing components further include sealing bends. The sealing bends are connected between the first sealing seat plate and the ground, and between the second sealing seat plate and the ground. The curved end of the sealing bend faces the second sealing component. The arc-shaped transition of the curved structure avoids gaps caused by assembly errors or differences in ground flatness. Simultaneously, the curved end of the sealing bend facing the second sealing component allows the first and second sealing seat plates to form a continuous sealing connection with the sealing base plate through the sealing bends. This creates a seamless, integrated sealing barrier between the upper, side, and bottom seals of the shelving, preventing leakage caused by the disconnection between the upper / side and bottom seals. It also provides a smooth transition support for the plastic film extending to the bottom sealing groove, preventing damage to the film at the joint due to excessive bending, and ensuring the complete coverage of the shelving by the plastic film.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. This invention utilizes a layered enclosure design of a first sealing component on the outer surface of the shelf body and a second sealing component around the bottom, combined with a sealing groove and a sealing element embedded in the groove to press the plastic film. This design not only securely limits the plastic film through the groove structure, but also fills tiny gaps through the elastic compensation or high-pressure deformation of the sealing element. At the same time, the gap between the sealing bottom plate and the ground is filled with sealant, and the sealing bend plate eliminates the dead angle between the seat plate and the ground, forming a seamless overall sealing barrier from top to side to bottom. This completely blocks the path of external oxygen infiltration and effectively avoids the quality decline caused by excessive oxidation of tobacco leaves. 2. This invention constructs a complete and independent sealed space inside the shelf body by tightly connecting a plastic film with two types of sealing components. This effectively blocks the interference of external temperature and humidity changes on the internal environment, maintains the stable temperature and humidity conditions required for tobacco leaf aging, and reduces problems such as mold and uneven aging. It also completely isolates dust, odors, and volatile pollutants from the storage environment, ensuring the purity of the tobacco leaf's own aroma and helping to form a high-quality aroma style. In addition, tobacco leaf storage is susceptible to infection and damage from tobacco insects in the environment. The sealed space also helps to isolate external pests and prevent environmental pests from invading. 3. In this invention, the first sealing plate is distributed at equal intervals along the length of the upper surface of the shelf and the second sealing plate is distributed along the width of the side. The sealing groove can be adapted to plastic films of different sizes, and the overall structure does not need to change the core form of the frame shelf. It can flexibly adapt to any frame shelf, and the installation and operation are convenient, which greatly reduces the application threshold in different scenarios. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings: Figure 1 This is a structural diagram of a sealed shelving unit without the plastic film installed. Figure 2 A schematic diagram of the structure after installing a plastic film in the middle of a sealed shelving unit; Figure 3 A schematic diagram of the structure after installing plastic film on the side of a sealed shelf; Figure 4 for Figure 1 A schematic diagram of the structure marked A in the middle; Figure 5 This is a schematic diagram of the cross-sectional structure of the first sealing seat plate and the second sealing seat plate; Figure 6 for Figure 3 A schematic diagram of the structure marked B in the middle; Figure 7 This is the first method of installing plastic film; Figure 8 This is the second method of installing plastic film; Figure 9 This is the third method of installing plastic film; Figure 10 This is a schematic diagram of the structure of the second sealing seat plate; Figure 11 A schematic diagram of the deformation of the elastic element when installing a seal in a sealing groove; Figure 12 This is a schematic diagram of the structure of the tobacco leaf storage system provided by the present invention.

[0021] The attached diagram shows the markings and corresponding component names: 1-Ground, 2-Shelf body, 3-First sealing seat plate, 4-Second sealing seat plate, 5-Sealing curved plate, 6-Plastic film, 7-Sealing bottom plate, 8-Sealing groove, 80-Elastic element, 801-Protrusion, 802-Force-bearing part, 803-Deformation body, 9-Sealing element, 10-Airflow circulation module, 101-Circulation pipe, 102-Airflow power device, 11-Intelligent control module. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0023] This embodiment 1 provides a shelf sealing structure for low-oxygen insect control, suitable for large-scale tobacco leaf storage and aging scenarios, such as... Figures 1-3 As shown, it includes the shelf body 2, the first sealing component, the second sealing component, and the plastic film 6; Among them, such as Figure 1 As shown, the outer surface of the shelf body 2 is evenly distributed with first sealing components. These first sealing components are "top-side" sealing units on the outer surface of the shelf body 2, distributed along the top and sides of the shelf body 2. They include three sub-components: a first sealing seat plate 3, a second sealing seat plate 4, and a sealing bend plate 5. All three are made of high-temperature resistant plastic materials, such as polyimide and other engineering plastics. Specifically, for example... Figure 4 As shown, the first sealing plate 3 is a U-shaped flat plate structure, evenly distributed along the length of the upper surface of the shelf body 2. The first sealing plate 3 is fixed to the frame structure on the shelf body 2 by screws or binding ropes. A total of 5 plates are set, with a spacing of 1200mm between adjacent plates (matching the spacing of the crossbeams on the shelf). The upper end surface of each first sealing plate 3 has 3 parallel sealing grooves 8 along the length direction (e.g., Figure 5 As shown, the groove type can be either a dovetail groove or a T-shaped groove. In this embodiment, a dovetail groove is selected (groove opening width 12mm, groove depth 8mm, groove wall inclination angle 45°). The sealing groove 8 extends to the ends of the first sealing seat plate 3 at both ends to ensure that the plastic film 6 can be completely embedded.

[0024] Please refer to the following: Figure 10The aforementioned second sealing plate 4 is a long strip-shaped flat plate, distributed along the sides (front and rear) of the shelf body 2. The second sealing plates 4 on each side are evenly spaced along the width direction of the shelf body 2, with an adjacent spacing of 1000mm (3 plates are set on each side, for a total of 6 plates). The upper end surface of each second sealing plate 4 has 3 parallel sealing grooves 8 along the length direction, and the two ends of the sealing grooves 8 extend to the ends of the second sealing plate 4. The top of the second sealing plate 4 on the front and rear sides of the shelf body 2 is flush with the top of the first sealing plate 3 on the upper surface. The surface of the second sealing plate 4 that is flush with the top of the first sealing plate 3 also has 3 parallel sealing grooves 8, thus forming a complete coverage of the side area of ​​the shelf body 2. Together with the first sealing plate 3, it forms an annular sealing support frame of "upper surface + side", providing a full circumferential fixing point for the plastic film 6. Then, through the cooperation of the sealing grooves 8 with the plastic film 6 and the sealing element 9, the splicing gaps on the side of the shelf are eliminated, and external temperature and humidity fluctuations are prevented from affecting the internal environment through the side. At the same time, such as Figure 1 and Figure 6 As shown, the sealing bend 5 has an overall L-shaped curved structure with a radius of 10mm at the curved end (to avoid stress concentration), and the curved end faces the second sealing component. One end of the sealing bend 5 is fixed to the bottom end of the first sealing seat plate 3 / second sealing seat plate 4 by bolts or strong adhesive, and the other end is fixed to the ground 1 by expansion bolts. The sealing bend 5 fills the dead angle between the first sealing seat plate 3 / second sealing seat plate 4 and the ground 1. The L-shaped curved structure can adapt to small gaps, preventing moisture and dust from seeping in from the gap between the seat plate and the ground. Furthermore, the sealing bend 5 provides a smooth transition for the plastic film 6 to extend from the side to the bottom sealing groove 8, preventing the film from being damaged due to stress concentration at the bend.

[0025] Please refer to the following: Figures 1-3 and Figure 6 In this embodiment, the second sealing component is a full-circumferential sealing barrier at the bottom of the shelf body 2, including a sealing base plate 7, which is the core component for blocking interference from the bottom environment. Specifically, the sealing base plate 7 is made of high-temperature resistant plastic material and is in the shape of a rectangular ring, arranged around the bottom of the shelf body 2. A continuous sealing groove 8 (consistent with the sealing groove type of the first and second sealing components) is opened on the upper surface of the sealing base plate 7 along the circumference. A sealant with excellent sealing performance, such as silicone sealant (resistant to aging), flame-retardant silicone sealant (flame-retardant), or nitrile rubber sealant (excellent sealing), can be evenly applied to the contact surface between the sealing base plate 7 and the ground 1. After fixing, a scraper is used to completely fill the gap between the sealing base plate 7 and the ground 1 with sealant to ensure that there are no air bubbles left.

[0026] When in use, the sealing base plate 7 connects to the bottom edge of the plastic film 6. The sealing groove 8 on the upper surface of the sealing base plate 7 forms a continuous "upper-side-lower" channel with the sealing grooves 8 of the first sealing component and the second sealing component, allowing the bottom edge of the plastic film 6 to be embedded, ensuring that the film fully covers the shelf body 2.

[0027] In addition, the sealing element 9 in this embodiment is a hollow high-pressure sealing element made of flame-retardant material, such as nylon 66 (PA66). It is hollow cylindrical in shape (the length matches the sealing groove 8) and filled with nitrogen gas (pressure 0.3MPa, pressure fluctuation ≤0.05MPa at room temperature). The hollow high-pressure sealing element is embedded in the sealing groove 8. The high-pressure nitrogen gas makes the sealing element adhere tightly to the groove wall and the plastic film 6 to form an elastic seal. When the sealing groove 8 undergoes slight deformation due to temperature changes, the sealing element can adaptively adjust its shape through internal pressure to maintain the sealing effect. It is especially suitable for storage environments with large temperature differences (±10℃).

[0028] In other embodiments, for better sealing, such as Figure 5 and Figure 11 As shown, elastic elements 80 are evenly embedded in the sidewalls of the sealing groove 8. Each elastic element 80 is a thin elastic sheet, including a protrusion 801, a force-receiving part 802, and a deformation body 803. The two ends of the deformation body 803 are embedded along the bottom wall and sidewall of the sealing groove 8, respectively. Its upper end is connected to the protrusion 801, and the other end of the protrusion 801 is fixed to the sidewall. The protrusion 801 has an arc-shaped structure and faces the interior of the sealing groove 8. The lower end of the deformation body 803 is connected to the force-receiving part 802, and the other end of the force-receiving part 802 extends upward and abuts against the sealing element 9. Next, when the seal 9 is filled with high-pressure gas, the expanding seal 9 is squeezed outwards, and the force-bearing part 802 is squeezed. The squeezing force is transmitted to the protrusion 801 through the deformation body 803. The arc-shaped structure of the protrusion 801 deforms and extends to the top outer side of the seal 9, thereby abutting against the seal 9, forming a dual sealing structure of high-pressure sealing of the seal and active pressing of the elastic element; at the same time, it makes the elastic element bear the force evenly, reduces fatigue failure caused by local stress concentration, extends service life, and achieves the purpose of improving the sealing performance of the sealing groove 8. Example 2

[0029] The sealing structure formed by the first sealing component, the second sealing component, and the plastic film 6 provided in Example 1 can be used in existing frame-type shelving. The specific construction and modification steps are as follows: First, confirm that the construction area is a concrete floor, clean up the debris (dust, gravel, etc.), mark the installation baseline of the rack body 2 (existing frame rack) with a level, and fill any gaps in the floor with sealing tape. Then, along the length of the upper surface of the shelf body 2, mark 5 installation points at equal intervals with a tape measure, with the deviation of the marking lines ≤ 1mm; Align the wooden board with the marking line and fix the wooden board to the shelf body 2 with wire. Align the first sealing seat plate 3 with the marking line of the wooden board, drill holes in the preset hole positions with an electric drill, and insert M8×20mm stainless steel bolts to ensure that the first sealing seat plate 3 is tightly attached to the upper surface of the wooden board without any looseness. On the front and rear sides of the shelf body 2, mark three installation points at equal intervals along the width direction. Similarly, align the wooden boards with the marking lines and fix the wooden boards to the shelf body 2 with wire. Drill holes in the preset holes along the marking lines of the wooden boards for the second sealing seat plate 4, and insert M8×20mm stainless steel bolts to ensure that the second sealing seat plate 4 is tightly attached to the upper surface of the wooden board without any looseness. The top of the second sealing seat plate 4 on the front and rear sides should be aligned with the upper surface of the first sealing seat plate 3 on the upper surface. At the junction of the bottom of each first sealing plate 3 and second sealing plate 4 with the ground 1, mark the installation points of two sealing bends 5 to ensure that the bent end of the bend is aligned with the installation area of ​​the second sealing assembly. Fix one end of the sealing bend 5 to the bottom of the sealing plate with bolts, and press the other end against the ground. After installation, use a level to check the verticality of the bend to avoid dead corners due to tilting. Next, wrap the rectangular ring-shaped sealing base plate 7 around the bottom of the shelf body 2. Apply silicone sealant evenly with a sealant gun on the contact surface between the sealing base plate 7 and the ground 1, ensuring that the sealant layer is free of bubbles and breaks. Fill the gaps, and the sealant layer should be 2mm higher than the ground to form a "convex seal" to prevent moisture from seeping through the gaps.

[0030] Next, according to the shelf surface dimensions, cut the PVC plastic film 6 into an upper surface film and side film, leaving an embedding section on all film edges for embedding into the sealing groove 8. First, lay the upper surface film so that it completely covers the upper surface of the shelf, with its edges embedded into the sealing groove 8 of the first sealing seat plate 3; then lay the side film, with each side film covering the corresponding side, and its upper and lower edges embedded into the sealing grooves 8 of the first sealing seat plate 3, the second sealing seat plate 4, and the sealing base plate 7, respectively. During this process, it is necessary to ensure that the edges of adjacent plastic films 6 overlap and adhere in the sealing groove 8, with an overlap width ≥ 20mm. Press the overlapping part by hand to make the film initially adhere to the inner wall of the sealing groove 8 without wrinkles.

[0031] In this embodiment, as Figures 7-9 As shown, there are several ways in which the edge of the plastic film 6 overlaps within the sealing groove 8, such as... Figure 7 As shown in this embodiment, both the first sealing plate 3 and the second sealing plate 4 are provided with three or more sealing grooves 8. The edges of adjacent plastic films 6 are embedded into these sealing grooves 8 from both sides and overlap each other to achieve a better sealing effect and connection reliability. Figure 8 and Figure 9One or two sealing grooves 8 are provided on the first sealing plate 3 and the second sealing plate 4. The edges between adjacent plastic films 6 are also embedded into these sealing grooves 8 from both sides and overlap each other, which is suitable for small shelves with low requirements for connection reliability. Example 3

[0032] This embodiment provides a tobacco leaf storage system based on the sealed rack constructed in Embodiment 1 or Embodiment 2, including a sealed rack, an airflow circulation module 10, a temperature and humidity control module, a temperature and humidity detection module, and an intelligent control module 11; Specifically, such as Figure 3 and Figure 12 As shown, an airflow interface is opened on the second sealing seat plate 4 on the two opposite sides of the shelf body 2. The inner side of the interface is sealed to the plastic film 6, and the outer side is reserved with a flange for connecting the circulation pipe to ensure that there is no leakage during airflow circulation. The airflow circulation module 10 includes a circulation pipe 101 and an airflow power device 102. The circulation pipe 101 is made of PVC flexible hose, and each circulation pipe 101 is connected to two airflow ports of a sealed shelf to form a closed-loop airflow channel with "air inlet at one end and air outlet at the other end". The airflow power device 102 is a variable frequency centrifugal fan, which is installed in the middle section of the circulation pipe 101. The fan inlet and outlet are sealed to the circulation pipe 101 through flanges. The airflow direction can be switched in both directions. The airflow speed can be controlled by adjusting the rotation speed to ensure uniform airflow distribution inside the shelf.

[0033] The temperature and humidity control module includes a dehumidifier, humidifier, heater, and cooler. All components are integrated into the air inlet of the circulation pipe 101 near the airflow power device, forming an integrated control unit. The dehumidifier uses a condenser dehumidifier to reduce the humidity of the circulating airflow, suitable for scenarios with relative humidity higher than 70%. The humidifier uses an ultrasonic humidifier to prevent tobacco leaves from getting damp, suitable for scenarios with relative humidity lower than 60%. The heater uses a PTC ceramic heater to increase the airflow temperature. The cooler uses a semiconductor cooling chip to reduce the airflow temperature. The power and operating status of all components can be independently controlled. The regulated constant temperature and humidity airflow is delivered into the sealed space of the shelf through airflow circulation, achieving precise environmental control.

[0034] The temperature and humidity detection module includes multiple temperature sensors, multiple humidity sensors, and a detection processor. The temperature sensors are PT100 platinum resistance sensors, and the humidity sensors are capacitive humidity sensors. Four temperature sensors and four humidity sensors are arranged inside the sealed shelf, installed on the front and back sides of the upper, middle, and lower layers of the shelf, respectively, to ensure that the detection covers all tobacco storage areas inside the shelf and avoid local temperature and humidity deviations. The detection processor uses an STM32 microcontroller, which is connected to all sensors via an RS485 bus. It collects data every 30 seconds, takes the average of the multiple temperature data as the real-time temperature information inside the shelf, and takes the average of the multiple humidity data as the real-time humidity information, forming a temperature and humidity data set and transmitting it to the intelligent control module.

[0035] The aforementioned intelligent control module 11 includes a controller and a human-machine interface; the controller is a PLC controller, which is connected to the airflow power device, temperature and humidity control module, and temperature and humidity detection module via wired (RS485) or wireless (Wi-Fi) methods, and has data reception, logic judgment, and command output functions; when the temperature is <18℃ and the humidity is 60-70%RH When the heater power is 600W (heating rate 1℃ / min), fan speed is 1500r / min (airflow velocity 1m / s), and the humidifier, dehumidifier, and cooler are off; when the temperature is >22℃ and the humidity is 60-70%RH, the cooler power is 500W (cooling rate 0.8℃ / min), fan speed is 1800r / min (airflow velocity 1.2m / s), and all other components are off; when the temperature is 18-22℃ and the humidity is <60%RH, the humidifier power is 120W (humidification rate 0.5%RH / min), fan speed is 1200r / min (airflow velocity 0.8m / s), and all other components are off; when the temperature is 18-22℃ and the humidity is >70%RH, the dehumidifier power is 300W (dehumidification rate 0.6%). When the temperature is <18℃ and the humidity is <60%RH, the heater power is 500W, the humidifier power is 100W, the fan speed is 1500r / min, and the cooler is off; when the temperature is >22℃ and the humidity is >70%RH, the cooler power is 400W, the dehumidifier power is 300W, the fan speed is 1800r / min, and the heater and humidifier are off.

[0036] Working principle: When the system power is turned on, the controller starts the airflow power unit 102 (initial speed 1500r / min), and the temperature and humidity detection module starts collecting data, transmitting temperature and humidity information to the controller every 30 seconds. After receiving the temperature and humidity information, the controller compares it with the pre-stored control scheme table to determine the range of data to which the current temperature and humidity information belongs, and retrieves the corresponding control data group. The controller outputs instructions based on the control data set to start the corresponding components of the temperature and humidity control module (e.g., when the temperature is below 18°C, the heater starts and operates at the set power), and at the same time adjusts the rotation speed of the airflow power device 102 to ensure that the regulated airflow speed is adapted to the temperature and humidity diffusion requirements. The regulated constant temperature and humidity airflow enters the sealed space of the sealed shelf through the circulation pipe 101, forming a uniform airflow (without dead corners) inside the shelf. After exchanging heat and humidity with the tobacco leaves, it returns to the circulation pipe 101 from the airflow interface on the other side, and is then regulated again by the temperature and humidity control module to achieve continuous circulation. The temperature and humidity detection module monitors changes in the internal environment of the shelf in real time. The controller dynamically adjusts the control parameters based on the feedback data (such as reducing the power of the humidifier when the humidity is close to the target value) to ensure that the temperature and humidity are always stable within the optimal range of 18-22℃ and 60-70% RH. If the temperature and humidity deviate from the target range of ±2℃ or ±5%RH, the controller will trigger an audible and visual alarm on the human-machine interface and automatically activate an emergency control plan (such as significantly increasing the power of the control components and accelerating the airflow speed) until the environment returns to normal.

[0037] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A shelf seal structure for low-oxygen insecticidal use, characterized by, include: The shelf body (2) has a first sealing component distributed at equal intervals on its outer surface and a second sealing component distributed around the bottom of the shelf body (2). Both the first sealing component and the second sealing component are provided with sealing grooves (8). Plastic film (6), the four edges of the plastic film (6) are respectively sealed and connected to the first sealing component and the second sealing component through the sealing groove (8), and a sealing member (9) for pressing the plastic film (6) is pressed into the sealing groove (8) so that a sealed space is formed inside the shelf body (2); The sealing element (9) is a hollow structure, and its internal space is filled with high-pressure gas. The side wall of the sealing groove (8) is interspersed with elastic elements (80). When the sealing element (9) is filled with high-pressure gas, the protrusion (801) on the elastic element (80) deforms and extends to the top outer side of the sealing element (9).

2. A shelf sealing structure for low-oxygen insecticidal use according to claim 1, wherein The sealing groove (8) is a dovetail groove or a T-shaped groove structure.

3. A shelf sealing structure for low-oxygen insecticidal use according to claim 2, wherein The first sealing assembly includes a first sealing seat plate (3) and a second sealing seat plate (4); The first sealing plate (3) is located on the upper surface of the shelf body (2) and is evenly distributed along the length direction of the upper surface. The second sealing plate (4) is located on the side of the shelf body (2) and is evenly distributed along the width direction of the upper surface. The plastic film (6) is sealed and connected between adjacent first sealing plates (3) and adjacent second sealing plates (4) through the corresponding sealing groove (8). The ends of all plastic films (6) are sealed and connected to the second sealing assembly.

4. The shelf sealing structure for low-oxygen insect control according to claim 1, characterized in that, The second sealing assembly includes a sealing base plate (7), which is sealed to the ground (1) and surrounds the shelf body (2), and the sealing groove (8) is provided on its upper surface.

5. A shelf sealing structure for low-oxygen insect control according to claim 4, characterized in that, The gap between the sealing base plate (7) and the ground (1) is filled with sealant.

6. A shelf sealing structure for low-oxygen insect control according to claim 3, characterized in that, The upper surfaces of the first sealing plate (3) and the second sealing plate (4) are provided with a plurality of sealing grooves (8), and the edges of adjacent plastic films (6) overlap and adhere in one of the sealing grooves (8).

7. A shelf sealing structure for low-oxygen insect control according to claim 6, characterized in that, The first sealing assembly and the second sealing assembly further include a sealing element (9), which is embedded in the sealing groove (8) and presses the plastic film (6).

8. A shelf sealing structure for low-oxygen insect control according to claim 7, characterized in that, The elastic element (80) is arranged at equal intervals along the side wall of the sealing groove (8).

9. A shelf sealing structure for low-oxygen insect control according to claim 7, characterized in that, The elastic element (80) also includes a force-receiving part (802), which is located on the bottom wall of the sealing groove (8) and transmits the deformation force received to the protrusion (801) through the deformation body (803).

10. A shelf sealing structure for low-oxygen insect control according to claim 7, characterized in that, The first sealing assembly and the second sealing assembly further include a sealing bend (5). The sealing bend (5) is connected between the first sealing seat plate (3) and the ground (1) and between the second sealing seat plate (4) and the ground (1). The bent end of the sealing bend (5) faces the second sealing assembly.

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