Moisture-proof sealed file storage cabinet

Abstract

The invention relates to the technical field of preventive protection of file containers, and discloses a damp-proof sealed file storage cabinet which comprises a cabinet body, a cabinet back plate is arranged on the rear side of the cabinet body, file storage drawers are arranged in the cabinet body, an iron drawer back plate is arranged on the right sides of the file storage drawers, and the iron drawer back plate is arranged on the right side of the cabinet body. An in-cabinet gas filtering mechanism and a magnetic type one-way exhaust valve mechanism are arranged on the right side of the iron drawer back plate, a sealing mechanism is arranged on the inner side of the front end of each file storage drawer, a gravity shutter is installed on the cabinet back plate, and the in-cabinet gas filtering mechanism comprises an air bellow capable of stretching out and drawing back along with the file storage drawers. The action of pushing and pulling the drawer daily is used as a power source, maintenance-free long-acting operation is achieved, air in the cabinet is forced to repeatedly pass through a filter element in the gas filtering mechanism in the cabinet to be subjected to internal circulation dialysis, and acid gas accumulated inside is effectively adsorbed and removed on the premise that external moisture-proof sealing is not damaged.

Description

Technical Field

[0001] This invention relates to the field of preventive protection technology for archival equipment, specifically a moisture-proof and sealed archival storage cabinet. Background Technology

[0002] The long-term preservation of paper archives and cultural relics places extremely high demands on the environment, among which constant humidity and air cleanliness are key factors determining the lifespan of paper. In order to isolate the archives from the corrosive effects of high humidity and harmful gases, the design trend of modern archival equipment increasingly focuses on improving the airtightness of the cabinet. Precision sheet metal technology is usually used in conjunction with multiple rubber sealing strips to construct a closed space, attempting to create a stable internal microenvironment through physical isolation.

[0003] However, this design, which solely pursues high airtightness, has led to irreconcilable technical contradictions in practical applications. During natural aging, paper media continuously release trace amounts of acetic acid and volatile organic compounds. In a closed cabinet lacking air circulation, these endogenous acidic gases accumulate, forming a high-concentration acidic microenvironment. This, in turn, induces an autocatalytic reaction of paper acidification, causing the documents to become brittle more quickly in the sealed environment. Simultaneously, the excellent airtightness creates a significant piston effect when the drawers are pushed in and out. The compressed air inside the drawer is difficult to expel when pushed in, creating significant air cushion resistance. This results in a heavy operating feel and even drawers that rebound and are difficult to close, severely impacting the daily user experience.

[0004] Existing technologies attempt to introduce various intervention methods. If an active solution with an electric circulating purification device is adopted, a complex power supply line is required. In a dense archive storage room, this not only increases maintenance costs but also creates a risk of electrical fire. If a passive solution with ventilation holes or conventional one-way valves is adopted, although the operating damping is reduced, it is difficult to maintain a high level of airtightness during static storage. External moisture can easily penetrate through valve gaps or normally open vents, causing the moisture-proof system to fail.

[0005] Therefore, developing a mechanical system that can simultaneously achieve high-level static sealing and moisture protection, smooth dynamic pressure relief, and effective purification of endogenous acid gases without the need for electric drive has become a critical technological bottleneck that urgently needs to be overcome in the field of archival equipment. In response to the above-mentioned problems, a moisture-proof and sealed archival storage cabinet is proposed to solve these problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a moisture-proof and airtight file storage cabinet that solves the problems of internal acid buildup, air cushion resistance, and moisture intrusion.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a moisture-proof and airtight file storage cabinet, comprising a cabinet body, a cabinet back panel on the rear side of the cabinet body, a file storage drawer inside the cabinet body, an iron drawer back panel on the right side of the file storage drawer, an internal gas filtration mechanism and a magnetic one-way exhaust valve mechanism on the right side of the iron drawer back panel, a sealing mechanism on the inner front side of the file storage drawer, and gravity louvers installed on the cabinet back panel; The cabinet's internal gas filtration mechanism includes a bellows that can extend and retract with the file storage drawer. The bellows is installed between the right side of the iron drawer back panel and the cabinet back panel. It can compress or expand by utilizing the displacement generated by pushing and pulling the iron drawer back panel to create an airflow pressure difference. A one-way air inlet valve is fixedly connected to the upper left end of the bellows, and a one-way air outlet valve is fixedly connected to the lower right end of the bellows. A filter box is installed at the bottom of the one-way air outlet valve.

[0008] Preferably, the magnetic one-way exhaust valve mechanism includes an exhaust hole, which is opened on the surface of the iron drawer back panel, and a rigid pressure strip is threaded onto the surface of the iron drawer back panel.

[0009] Preferably, a soft magnetic sealing valve plate is provided at the bottom of the rigid pressure strip, and a flexible non-stick sealing coating is provided on the left side of the soft magnetic sealing valve plate.

[0010] Preferably, the sealing mechanism includes a groove, which is installed on the inner side of the front end of the file storage drawer, and a rubber sealing strip is provided inside the groove.

[0011] Preferably, a support plate is provided at the bottom of the rubber sealing strip, and a wave spring sheet is provided at the bottom of the support plate.

[0012] Preferably, the support plate is disposed inside the groove, and the wave spring sheet is disposed inside the groove.

[0013] Preferably, the soft magnetic sealing valve plate is disposed on the right side of the exhaust hole, and the flexible non-stick sealing coating is disposed on the lower side of the rigid pressure strip.

[0014] Preferably, the soft magnetic sealing valve is disposed on the right side of the iron drawer back panel.

[0015] Preferably, the gas filtration mechanism inside the cabinet is located below the magnetic one-way exhaust valve mechanism, and the filter box is located at the bottom of the air box.

[0016] Preferably, the one-way air intake valve is located at the bottom of the magnetic one-way exhaust valve mechanism, and the cabinet gas filtration mechanism and the magnetic one-way exhaust valve mechanism are located inside the cabinet.

[0017] This invention provides a moisture-proof, airtight file storage cabinet. It has the following beneficial effects: 1. This invention uses the everyday action of pushing and pulling drawers as a power source to achieve maintenance-free and long-term operation. It forces the air inside the cabinet to repeatedly circulate and dialyze through the filter element in the gas filtration mechanism inside the cabinet. Without damaging the external moisture-proof seal, it effectively adsorbs and removes the acidic gases accumulated inside, breaks the self-catalytic vicious cycle of paper aging, avoids the corrosion of archives by acidic gases, and extends the life of mechanical parts inside the cabinet.

[0018] 2. When air pressure is generated when the drawer is pushed in, the valve plate can instantly overcome the magnetic force and open, quickly expelling excess air, making the drawer easy and smooth to push in. When the pushing force disappears, the valve plate instantly retracts and resets under the action of the magnetic force, ensuring a tight seal and smooth operation under normal conditions. At the same time, it ensures that the filter element in the gas filtration mechanism inside the cabinet only needs to deal with acidic gases inside the cabinet, avoiding premature saturation due to adsorption of external moisture, thereby extending the effective service life of the filter element.

[0019] 3. When the drawer is closed and the sealing strip is squeezed by the panel, the groove restricts the lateral extension of the bottom of the rubber material, forcing the rubber material to undergo elastic deformation only in the direction of the contact surface. This ensures that the sealing strip can instantly recover its initial height and fullness after multiple opening and closing, maintaining a long-term sealing compensation capability. At the same time, the wave-shaped spring sheet installed at the bottom can continuously apply a pushing force outward, avoiding tiny leakage gaps caused by rubber aging. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the cabinet of the present invention; Figure 3 This is a schematic diagram of the gravity louver of the present invention; Figure 4 This is a schematic diagram of the in-cabinet gas filtration mechanism of the present invention; Figure 5 This is a schematic diagram of the file storage drawer of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 This is a schematic diagram of the sealing mechanism of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0021] The components include: 1. Cabinet body; 2. Cabinet back panel; 3. File storage drawer; 4. Iron drawer back panel; 5. Internal gas filtration mechanism; 51. Air box; 52. One-way air inlet valve; 53. One-way air outlet valve; 54. Filter box; 6. Magnetic one-way exhaust valve mechanism; 61. Exhaust hole; 62. Rigid pressure strip; 63. Soft magnetic sealing valve plate; 64. Flexible non-stick sealing coating; 7. Sealing mechanism; 71. Groove; 72. Rubber sealing strip; 73. Support plate; 74. Wave spring plate; 8. Gravity louvers. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 4 This invention provides a moisture-proof and airtight file storage cabinet, including a cabinet body 1, a back panel 2 on the rear side of the cabinet body 1, the cabinet body 1 providing fixed installation support for the back panel 2, an file storage drawer 3 inside the cabinet body 1, the cabinet body 1 providing movable installation space for the file storage drawer 3, an iron drawer back panel 4 on the right side of the file storage drawer 3, the file storage drawer 3 providing a fixed installation position for the iron drawer back panel 4, and an internal gas filtration mechanism 5 and a magnetic one-way exhaust valve mechanism 6 on the right side of the iron drawer back panel 4, the internal gas filtration mechanism 5 being responsible for purifying the acidic air inside the cabinet body 1. The magnetic one-way exhaust valve mechanism 6 is responsible for dynamic pressure relief and static sealing, which together maintain a stable environment inside the cabinet 1. This not only prevents internal acid accumulation but also reduces air cushion resistance and blocks moisture intrusion. The front inner side of the file storage drawer 3 is equipped with a sealing mechanism 7, which provides a sealed protection between the cabinet 1 and the file storage drawer 3. The cabinet back panel 2 is equipped with gravity louvers 8, which provides a mounting carrier for the gravity louvers 8, allowing them to hang down and close naturally, forming an outer barrier that blocks the backflow of external moisture and dust. At the same time, it provides an exhaust channel for exhaust gas when the gas inside the cabinet is discharged. The air filtration mechanism 5 inside the cabinet includes a bellows 51 that can extend and retract with the file storage drawer 3. The bellows 51 is installed between the right side of the iron drawer back panel 4 and the cabinet back panel 2. It can compress or expand by the displacement generated by pushing and pulling the iron drawer back panel 4 to form an air pressure difference. A one-way air intake valve 52 is fixedly connected to the upper left end of the bellows 51. The bellows 51 provides a fixed installation position for the one-way air intake valve 52. When the bellows 51 expands, the one-way air intake valve 52 draws air from the cabinet 1 into the bellows 51 cavity in one direction. A one-way air outlet valve 53 is fixedly connected to the lower right end of the bellows 51. The one-way air outlet valve 53 provides a one-way passage between the bellows 51 and the filter box 54. The filter box 54 is installed at the bottom of the one-way air outlet valve 53. The filter box 54 is filled with a chemical adsorption medium to deacidify and filter the flowing air and release the purified air back into the cabinet 1.

[0024] Specifically, cabinet 1 provides fixed installation support for cabinet back panel 2 and provides movable installation space for archive storage drawer 3. Archive storage drawer 3 provides a fixed installation position for iron drawer back panel 4. The cabinet internal gas filtration mechanism 5 and magnetic one-way exhaust valve mechanism 6, located on the right side of iron drawer back panel 4, are responsible for purifying acidic air inside cabinet 1 and achieving dynamic pressure relief and static sealing, respectively. Sealing mechanism 7 provides sealing protection between cabinet 1 and archive storage drawer 3. Cabinet back panel 2 provides a mounting carrier for gravity louvers 8 to form an outer barrier and exhaust exhaust gas. The air box 51 of cabinet internal gas filtration mechanism 5 is installed between iron drawer back panel 4 and cabinet back panel 2, using iron... The push-pull displacement of the drawer back panel 4 creates an airflow pressure difference. The air box 51 provides a fixed installation position for the one-way air intake valve 52. The one-way air intake valve 52 draws in air from the cabinet 1 in one direction. The one-way air outlet valve 53 provides a one-way passage between the air box 51 and the filter box 54. The filter box 54 releases the air back into the cabinet 1 after deacidification and filtration through the convection of the internal chemical adsorption medium. Ultimately, without the need for electric drive, the moisture-proof and sealed file storage cabinet can simultaneously achieve the functions of static high-level sealing and moisture prevention, dynamic smooth pressure relief, and effective purification of endogenous acid gas. It successfully avoids endogenous acid accumulation, reduces air cushion resistance, and blocks moisture intrusion, maintaining a stable environment inside the cabinet 1.

[0025] Please see the appendix Figure 3 Appendix Figure 5 and attached Figure 6The magnetic one-way exhaust valve mechanism 6 includes an exhaust hole 61, which is opened on the surface of the iron drawer back panel 4. The iron drawer back panel 4 provides a carrier for the exhaust hole 61, allowing the exhaust hole 61 to be stably set and form a gas exhaust channel. A rigid pressure strip 62 is threadedly connected to the surface of the iron drawer back panel 4. The iron drawer back panel 4 provides a support base for the rigid pressure strip 62, ensuring the structural stability of the rigid pressure strip 62 after installation. A soft magnetic sealing valve plate 63 is provided at the bottom of the rigid pressure strip 62. The rigid pressure strip 62 provides a fixed limiting function for the soft magnetic sealing valve plate 63, which can stably constrain the soft magnetic sealing valve plate 63 in a preset position, preventing the soft magnetic sealing valve plate 63 from shifting or deviating during airflow impact or long-term use, and ensuring the stable realization of sealing and exhaust functions. A flexible anti-stick sealing coating 64 is provided on the left side of the soft magnetic sealing valve plate 63. The flexible anti-stick sealing coating 64 provides sealing enhancement and anti-stick protection between the soft magnetic sealing valve plate 63 and the iron drawer back panel 4. The soft magnetic sealing valve plate 63 is located on the right side of the vent 61. The soft magnetic sealing valve plate 63 provides dynamic sealing and pressure relief control for the vent 61. The flexible anti-stick sealing coating 64 is located on the right side of the iron drawer back panel 4. The flexible anti-stick sealing coating 64 can prevent the soft magnetic sealing valve plate 63 from directly adsorbing and sticking to the iron drawer back panel 4, ensuring smooth operation of the soft magnetic sealing valve plate 63 during pressure relief and reset, and extending the service life of the soft magnetic sealing valve plate 63. The soft magnetic sealing valve plate 63 is located on the right side of the iron drawer back panel 4. The iron drawer back panel 4 provides a ferromagnetic valve seat base for the soft magnetic sealing valve plate 63, allowing the soft magnetic sealing valve plate 63 to achieve sealing and adhesion by magnetic attraction. The soft magnetic sealing valve plate 63 is located on the lower side of the rigid pressure strip 62. The flexible anti-stick sealing coating 64 provides sealing enhancement and anti-stick protection between the soft magnetic sealing valve plate 63 and the iron drawer back panel 4.

[0026] Specifically, the iron drawer back panel 4 provides a carrier for the vent 61, a threaded connection support base for the rigid pressure strip 62, and a ferromagnetic valve seat base for the soft magnetic sealing valve plate 63. The rigid pressure strip 62 provides a fixed limiting function for the soft magnetic sealing valve plate 63. The soft magnetic sealing valve plate 63 is located on the right side of the vent 61 and the right side of the iron drawer back panel 4, and provides dynamic sealing and pressure relief control for the vent 61. The flexible anti-stick sealing coating 64 is located on the left side of the soft magnetic sealing valve plate 63 and the right side of the iron drawer back panel 4, and is located below the rigid pressure strip 62. It provides sealing enhancement and anti-stick protection between the soft magnetic sealing valve plate 63 and the iron drawer back panel 4, preventing them from directly adhering and sticking together. This ensures that the soft magnetic sealing valve plate 63 operates smoothly during pressure relief and reset, and extends its service life. Ultimately, the magnetic suction one-way vent valve mechanism 6 achieves the functions of tight sealing in static conditions and smooth pressure relief in dynamic conditions, effectively blocking the backflow of external moisture and dust, while also reducing the air cushion resistance when the file storage drawer 3 is pushed and pulled.

[0027] Please see the appendix Figure 5 Appendix Figure 7 and attached Figure 8 The sealing mechanism 7 includes a groove 71, which is installed on the inner side of the front end of the file storage drawer 3. The rubber sealing strip 72 provides a direct sealing contact layer between the file storage drawer 3 and the cabinet 1. The groove 71 is provided with a rubber sealing strip 72, which provides a space for the rubber sealing strip 72 to be accommodated and limited, restricting the lateral extension of the bottom of the rubber sealing strip 72, and forcing the rubber sealing strip 72 to only undergo elastic deformation in the direction of the contact surface when under pressure. The bottom of the rubber sealing strip 72 is provided with a support plate 73, which provides uniform support force for the rubber sealing strip 72, preventing the rubber sealing strip 72 from deforming or being damaged due to uneven local force, and ensuring the flatness of the sealing surface. A wave spring plate 74 is provided at the bottom of the support plate 73. The support plate 73 provides a force transmission medium for the wave spring plate 74, evenly transmitting the elastic pushing force of the wave spring plate 74 to the rubber sealing strip 72, while simultaneously transmitting the compressive force on the rubber sealing strip 72 back to the wave spring plate 74, achieving force balance. The support plate 73 is set inside the groove 71, which provides an internal installation space for the support plate 73, allowing the support plate 73 to be stably set inside the groove 71. The wave spring plate 74 is set inside the groove 71, which provides an internal mounting cavity for the wave spring plate 74, allowing the wave spring plate 74 to be stably set inside the groove 71, ensuring that the wave spring plate 74 always maintains axial expansion and contraction during compression and reset, without lateral displacement, and ensuring stable output of elastic pushing force.

[0028] Specifically, the groove 71 is installed on the inner front side of the archive storage drawer 3, providing a space for the rubber sealing strip 72 to be accommodated and limited, a space for the support plate 73 to be installed internally, and a cavity for the wave spring sheet 74 to be installed internally. The rubber sealing strip 72 serves as the direct sealing contact layer between the archive storage drawer 3 and the cabinet 1. When under pressure, it is restricted by the groove 71 to elastically deform only in the direction of the contact surface. The support plate 73 is set inside the groove 71 and provides uniform support force for the rubber sealing strip 72. At the same time, it acts as a force transmission medium to achieve force balance between the rubber sealing strip 72 and the wave spring sheet 74. The wave spring sheet 74 is set inside the groove 71 and always maintains axial extension and contraction, stably outputting elastic pushing force. Ultimately, the sealing mechanism 7 achieves a long-term reliable moisture-proof and airtight effect between the archive storage drawer 3 and the cabinet 1, ensuring that the sealing surface is flat and the force is balanced, and avoiding deformation, damage, or leakage gaps due to aging of the rubber sealing strip 72.

[0029] Working principle: The internal gas filtration mechanism 5 is installed between the iron drawer back plate 4 and the fixed cabinet back plate 2 on the rear side of the file storage drawer 3. When the user pulls the file storage drawer 3 outward, the iron drawer back plate 4 moves forward, causing the bellows 51 to stretch and deform, creating negative pressure in the cavity, which in turn draws open the one-way air inlet valve 52, drawing the acidic air accumulated inside the cabinet 1 into the bellows 51 for temporary storage. When the user pushes the file storage drawer 3 back, the bellows 51 is mechanically compressed to generate high-pressure airflow, forcing the one-way air inlet valve 52 to close and opening the one-way air outlet valve 53, forcing the exhaust gas into the filter box 54 at the bottom. The air is deacidified and purified by the chemical medium inside the filter box 54 and then released back into the cabinet 1, thus achieving kinetic energy-driven internal air circulation purification without the need for electricity.

[0030] The magnetic one-way exhaust valve mechanism 6 utilizes the ferromagnetism of the iron drawer back panel 4 as the valve seat base. When stationary or when the drawer is pulled out, the soft magnetic sealing valve plate 63 relies on its own magnetic attraction to drive the flexible non-stick sealing coating 64 on its surface to adhere tightly to the surface of the iron drawer back panel 4 and tightly cover the exhaust hole 61. Together with the outermost naturally hanging and closed gravity louvers 8, a double barrier is formed, thereby blocking the backflow of external moisture and dust. When the user pushes the drawer in, causing the air pressure inside the cabinet to rise instantly, the internal high-pressure airflow overcomes the magnetic attraction and drives the soft magnetic sealing valve plate 63, which is fixed in position by the rigid pressure strip 62, to pop open, allowing excess air to be quickly discharged through the exhaust hole 61 into the rear cavity between the iron drawer back panel 4 and the cabinet back panel 2. At the same time, the discharged airflow immediately opens the gravity louvers 8 installed on the cabinet back panel 2, and finally discharges the exhaust gas to the external environment of the cabinet 1, realizing graded pressure relief and one-way airflow.

[0031] The sealing mechanism 7 is embedded in the groove 71 on the inner side of the front end of the file storage drawer 3. The wave spring 74 at the bottom generates a continuous force, which is transmitted to the outer rubber sealing strip 72 through the support plate 73. This keeps the rubber sealing strip 72 slightly convex outward. When the drawer is closed, the rubber sealing strip 72 is pressed tightly against the edge of the cabinet 1. At this time, the wave spring 74 can change the amount of compression deformation of the rubber sealing strip 72, ensuring that the sealing interface of the file storage drawer 3 always keeps in close contact with the edge of the cabinet 1, thereby achieving a long-term reliable moisture-proof and airtight effect.

Claims

1. A moisture-proof and airtight file storage cabinet, characterized in that, The cabinet includes a cabinet body (1), a cabinet back panel (2) is provided on the rear side of the cabinet body (1), an archive storage drawer (3) is provided inside the cabinet body (1), an iron drawer back panel (4) is provided on the right side of the archive storage drawer (3), an internal gas filtration mechanism (5) and a magnetic one-way exhaust valve mechanism (6) are provided on the right side of the iron drawer back panel (4), a sealing mechanism (7) is provided on the inner side of the front end of the archive storage drawer (3), and gravity louvers (8) are installed on the cabinet back panel (2). The cabinet gas filtration mechanism (5) includes a bellows (51) that can extend and retract with the file storage drawer (3). The bellows (51) is installed between the right side of the iron drawer back panel (4) and the cabinet back panel (2). It can compress or expand by the displacement generated by pushing and pulling the iron drawer back panel (4) to form an air pressure difference. A one-way air inlet valve (52) is fixedly connected to the upper left end of the bellows (51), and a one-way air outlet valve (53) is fixedly connected to the lower right end of the bellows (51). A filter box (54) is installed at the bottom of the one-way air outlet valve (53).

2. The moisture-proof and airtight file storage cabinet according to claim 1, characterized in that, The magnetic one-way exhaust valve mechanism (6) includes an exhaust hole (61), which is opened on the surface of the iron drawer back panel (4), and a rigid pressure strip (62) is threaded onto the surface of the iron drawer back panel (4).

3. The moisture-proof and airtight file storage cabinet according to claim 2, characterized in that, The bottom of the rigid pressure strip (62) is provided with a soft magnetic sealing valve plate (63), and a flexible non-stick sealing coating (64) is provided on the left side of the soft magnetic sealing valve plate (63).

4. The moisture-proof and airtight file storage cabinet according to claim 1, characterized in that, The sealing mechanism (7) includes a groove (71), which is installed on the inner side of the front end of the archive storage drawer (3), and a rubber sealing strip (72) is provided inside the groove (71).

5. A moisture-proof and airtight file storage cabinet according to claim 4, characterized in that, The bottom of the rubber sealing strip (72) is provided with a support plate (73), and the bottom of the support plate (73) is provided with a wave spring sheet (74).

6. A moisture-proof and airtight file storage cabinet according to claim 5, characterized in that, The support plate (73) is disposed inside the groove (71), and the wave spring sheet (74) is disposed inside the groove (71).

7. A moisture-proof and airtight file storage cabinet according to claim 3, characterized in that, The soft magnetic sealing valve plate (63) is located on the right side of the exhaust hole (61), and the flexible non-stick sealing coating (64) is located on the lower side of the rigid pressure strip (62).

8. A moisture-proof and airtight file storage cabinet according to claim 7, characterized in that, The soft magnetic sealing valve plate (63) is located on the right side of the iron drawer back panel (4), and the soft magnetic sealing valve plate (63) is located on the right side of the exhaust hole (61).

9. A moisture-proof and airtight file storage cabinet according to claim 1, characterized in that, The gas filtration mechanism (5) inside the cabinet is located below the magnetic one-way exhaust valve mechanism (6), and the filter box (54) is located at the bottom of the air box (51).

10. A moisture-proof and airtight file storage cabinet according to claim 1, characterized in that, The one-way air intake valve (52) is located at the bottom of the magnetic one-way exhaust valve mechanism (6), and the cabinet gas filtration mechanism (5) and the magnetic one-way exhaust valve mechanism (6) are located inside the cabinet (1).

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