A medical airtight door that can be opened and closed quickly
By introducing a buffer opening and closing mechanism, a sealing mechanism, and an auxiliary sealing component into the medical airtight door, the problem of insufficient sealing caused by the gap between the bottom of the airtight door and the ground is solved, achieving efficient and rapid opening and closing and sealing effects, and reducing the risk of cross-infection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU XUANSHENG DECORATION MATERIALS CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-31
AI Technical Summary
Existing medical airtight doors, after being closed, have a tiny gap between the bottom of the airtight seal and the ground, which affects the sealing effect and increases the risk of outside air or pollutants entering the protected area.
Employing a buffered opening and closing mechanism, a sealing mechanism, and auxiliary sealing components, including a dynamic compensation spring, rollers, and sealing airbags, combined with an electric drive system, the airtight door ensures that it adapts to uneven ground during opening and closing, providing thrust and sealing to prevent air or contaminant leakage.
It improves the sealing and stability of airtight doors, ensuring they are not damaged by excessive impact during rapid opening and closing, enhances adaptability to uneven ground environments, and reduces the risk of cross-infection.
Smart Images

Figure CN224579260U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of airtight door technology, and in particular to a medical airtight door that can be opened and closed quickly. Background Technology
[0002] The field of airtight door technology involves the design, manufacture, and application of airtight doors and windows. This includes ensuring excellent sealing performance through the selection of special structures and materials to prevent the leakage of gases, liquids, or contaminants. These doors are typically used in environments requiring high levels of isolation, such as laboratories, pharmaceutical plants, and cleanrooms. Medical airtight doors are specifically designed for medical settings, providing a high level of sealing to prevent the entry or escape of air, pathogens, and contaminants. These doors are commonly used in sterile areas of hospitals, such as operating rooms, intensive care units, and infectious disease wards, to ensure air quality and hygiene standards, prevent cross-infection, and protect patient safety. The connection between airtight door technology and medical airtight doors lies in the fact that medical airtight door technology is a specific application of airtight door technology. While airtight door technology can be widely applied across various fields, in medical environments, due to the stringent requirements for air quality and sterility, the design and functional requirements for medical airtight doors are more stringent, emphasizing high-efficiency sealing performance, durability, and resistance to contamination. The working principle of medical airtight doors relies primarily on their sealing structure and special design to ensure airtightness and air quality in medical facilities such as operating rooms and ICUs. Medical airtight doors typically consist of multiple sealing components, including high-density sealing strips and sealing rubber strips. These components ensure that there is no leakage of gas, particles, or contaminants between the door frame and the door leaf. The opening and closing of the door is regulated by an automated control system, usually with an electric or pneumatic drive system, ensuring smooth operation and good sealing. Some medical airtight doors also have negative or positive pressure control functions. While maintaining airtightness, they regulate airflow to ensure a pressure difference between the inside of the ward and the external environment, thereby effectively preventing external contaminants from entering or contaminants from leaking from the ward. In existing technologies, some medical airtight doors, after being closed, have a tiny gap between the bottom of the airtight seal and the ground. This gap leads to insufficient sealing and thus affects the protective effect. Due to the presence of this gap, outside air, bacteria, or other pollutants can enter the protected area through the gap, resulting in decreased air quality or an increased risk of cross-infection. Therefore, a medical airtight door that can be quickly opened and closed is proposed to solve the above problems. Utility Model Content
[0003] To overcome the above shortcomings, this utility model provides a medical airtight door that can be opened and closed quickly, aiming to improve the problem that in some existing medical airtight doors, after closing, there is a gap between the bottom of the airtight seal and the ground, which affects the final protective effect.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a medical airtight door that can be opened and closed quickly, wherein a mounting base is fixedly connected to the front side of the wall, a buffer opening and closing mechanism is fixedly connected to the front side of the mounting base, an airtight door body is fixedly connected to the bottom of the buffer opening and closing mechanism, a sealing mechanism is fixedly connected to the bottom of the airtight door body, and two rollers are rotatably connected inside the airtight door body. The sealing mechanism includes multiple guide shafts, the outer surfaces of which are slidably connected to the interior of the airtight door body. Multiple dynamic compensation springs are fixedly connected to the bottom of the airtight door body, the outer surfaces of which are located inside the multiple guide shafts. A sealing block is fixedly connected to the outer bottom of the multiple guide shafts, the outer bottom of the airtight door body is slidably connected to the interior of the sealing block, and an auxiliary sealing assembly is fixedly connected to the front side of the wall. As a further description of the above technical solution: the buffered opening and closing mechanism includes a limiting block, the rear side of the limiting block is fixedly connected to the front side of the mounting base, a buffer pad is fixedly connected to the right side of the limiting block, a threshold block is fixedly connected to the bottom of the limiting block, the right side of the threshold block is in contact with the left side of the airtight door body, and an opening and closing component is fixedly connected to the front side of the mounting base. As a further description of the above technical solution: the auxiliary sealing assembly includes a sealing airbag, the rear side of which is fixedly connected to the front side of the wall, an electric inflator is fixedly connected to the front side of the wall, an air pipe is fixedly connected to the top of the electric inflator, the other end of the air pipe is fixedly connected to the inside of the sealing airbag, and the front side of the sealing airbag is in contact with the rear side of the airtight door body. As a further description of the above technical solution: the opening and closing assembly includes a drive motor, the rear side of which is fixedly connected to the front side of the mounting base, a transmission wheel is fixedly connected to the drive end of the drive motor, a fixed seat is fixedly connected to the front side of the mounting base, an auxiliary wheel is rotatably connected inside the fixed seat, a rack is internally coupled to the auxiliary wheel and the transmission wheel, two connecting blocks are fixedly connected to the outside of the rack, the bottom of the connecting blocks is fixedly connected to the top of the airtight door body, a guide block is fixedly connected to the front side of the mounting base, and the outside of the guide block is slidably connected to the inside of the connecting block; As a further description of the above technical solution: the airtight door body has an adjustment groove inside, the guide shaft is externally slidably connected to the inside of the adjustment groove, the bottom of the airtight door body has a groove, the outside of the multiple dynamic compensation springs is fixedly connected to the inside of the groove, and the sealing block is a U-shaped block. As a further description of the above technical solution: a vacuum chamber is provided inside the sealing airbag, and the other end of the air tube is fixedly connected to the inside of the vacuum chamber; As a further description of the above technical solution: both the transmission wheel and the auxiliary wheel are provided with teeth inside, and the teeth are engaged with the rack; As a further description of the above technical solution: a protective shell is fixedly connected to the front side of the mounting base, and a receiving groove is provided inside the protective shell. The external part of the opening and closing component is slidably connected inside the receiving groove.
[0005] This utility model has the following beneficial effects: 1. In this utility model, during the opening and closing of the airtight door body, the sealing mechanism fixed to the bottom of the airtight door body allows the airtight door body to adapt to whether the ground is flat or not. When the ground is uneven, the ground puts pressure on the sealing block, causing the sealing block to slide partially. During the partial sliding of the sealing block, the dynamic compensation spring fixed to the side of the airtight door body and the sealing block provides thrust to the sealing block, thereby ensuring the sealing effect of the sealing block. At the same time, the auxiliary sealing component fixed to the front side of the wall further ensures the sealing effect of the airtight door body, thereby improving the stability and safety of the device.
[0006] 2. In this utility model, during the opening and closing of the airtight door body, the rollers connected inside the airtight door body provide assistance for the sliding of the airtight door body, while the two connecting blocks fixed on the top of the airtight door body cooperate with the rack to provide the necessary driving force for the opening and closing of the airtight door body. The limiting block fixed on the front side of the mounting base and the threshold block fixed on the front side of the sealing airbag cooperate with each other to ensure that the airtight door body will not be damaged due to excessive impact force during the opening and closing process. Attached Figure Description
[0007] Figure 1 This is a three-dimensional schematic diagram of a medical airtight door that can be quickly opened and closed according to the present invention. Figure 2 This is a schematic diagram of the guide shaft of a medical airtight door that can be opened and closed quickly, as proposed in this utility model. Figure 3 This is a schematic diagram of the structure of a connecting block for a medical airtight door that can be opened and closed quickly, as proposed in this utility model. Figure 4 This is a schematic diagram of the trachea structure of a medical airtight door that can be quickly opened and closed according to this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.
[0008] Legend: 1. Wall; 2. Mounting base; 3. Drive motor; 4. Transmission wheel; 5. Rack; 6. Fixing seat; 7. Auxiliary wheel; 8. Limiting block; 9. Buffer pad; 10. Connecting block; 11. Airtight door body; 12. Threshold block; 13. Guide shaft; 14. Dynamic compensation spring; 15. Sealing block; 16. Roller; 17. Sealing airbag; 18. Electric inflator; 19. Air pipe; 20. Guide block; 21. Protective shell. Detailed Implementation
[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0010] Reference Figures 1 to 3 This utility model provides an embodiment of a medical airtight door that can be quickly opened and closed, including a wall 1. The wall 1 is the supporting structure of the medical airtight door and has high stability and strength. A mounting base 2 is fixedly connected to the front side of the wall 1. The mounting base 2 is a key supporting component of the airtight door, providing load-bearing and support for the opening and closing mechanism. A buffered opening and closing mechanism is fixedly connected to the front side of the mounting base 2. The main function of the buffered opening and closing mechanism is to reduce the impact force when the airtight door is opened and closed, ensuring that the door will not cause excessive mechanical stress during rapid opening or closing. An airtight door body 11 is fixedly connected to the bottom of the buffered opening and closing mechanism. The airtight door body 11 is the core part of the medical airtight door and has high airtightness and corrosion resistance. A sealing mechanism is fixedly connected to the bottom of the airtight door body 11. Two rollers 16 are rotatably connected inside the airtight door body 11. A protective shell 21 is fixedly connected to the front side of the mounting base 2. A receiving groove is opened inside the protective shell 21. The opening and closing components are slidably connected to the inside of the receiving groove. The sealing mechanism includes multiple guide shafts 13. These guide shafts 13 guide the sliding angle and range of the sealing block 15 due to ground conditions during the sliding process of the airtight door body 11. The external parts of the multiple guide shafts 13 are slidably connected to the inside of the airtight door body 11. Multiple dynamic compensation springs 14 are fixedly connected to the bottom of the airtight door body 11. These dynamic compensation springs 14 adjust the pressure between the door body and the sealing block 15 to compensate for deformation caused by wear or changes in the external environment during use, ensuring that the sealing block 15 maintains tight contact with the ground to achieve the best sealing effect. The exterior is located inside multiple guide shafts 13. A sealing block 15 is fixedly connected to the bottom of the multiple guide shafts 13. The sealing block 15 adopts a U-shaped block design, which can fully wrap the bottom of the door body to prevent air or pollutants from seeping in. The bottom of the airtight door body 11 is slidably connected to the interior of the sealing block 15. An auxiliary sealing component is fixedly connected to the front side of the wall 1. An adjustment groove is opened inside the airtight door body 11. The exterior of the guide shafts 13 is slidably connected to the interior of the adjustment groove. A groove is opened at the bottom of the airtight door body 11. The exterior of multiple dynamic compensation springs 14 is fixedly connected to the interior of the groove. The sealing block 15 adopts a U-shaped block. The auxiliary sealing assembly includes a sealing airbag 17, whose rear side is fixedly connected to the front side of the wall 1. The airbag 17 expands when the door is closed, further enhancing the sealing performance. An electric inflator 18 is fixedly connected to the front side of the wall 1, and an air tube 19 is fixedly connected to the top of the electric inflator 18. The other end of the air tube 19 is fixedly connected to the inside of the sealing airbag 17. The front side of the sealing airbag 17 contacts the rear side of the airtight door body 11. A vacuum chamber is formed inside the sealing airbag 17, and the other end of the air tube 19 is fixedly connected to the inside of the vacuum chamber. The electric inflator 18 is connected to the air tube 19 and can automatically inflate or deflate as needed, adjusting the expansion degree of the sealing airbag 17. The vacuum chamber inside the sealing airbag 17 achieves a stronger airtight effect, preventing external contaminants from entering sensitive areas.
[0011] Reference Figures 2 to 5 The buffered opening and closing mechanism includes a limiting block 8, which is fixedly connected to the mounting base 2 to limit the range of motion. The buffer pad 9 acts as a buffer to reduce vibration when the door collides with the fixed structure. The rear side of the limiting block 8 is fixedly connected to the front side of the mounting base 2. The buffer pad 9 is fixedly connected to the right side of the limiting block 8. The bottom of the limiting block 8 is fixedly connected to a threshold block 12, which controls the contact between the door and other components to ensure smooth opening or closing. The right side of the threshold block 12 contacts the left side of the airtight door body 11. The front side of the mounting base 2 is fixedly connected to an opening and closing assembly, which is used to realize the rapid opening and closing of the airtight door. The opening and closing assembly includes a drive motor 3. The drive motor 3, mounted on the base, provides power to enable the airtight door to open and close automatically. The rear side of the drive motor 3 is fixedly connected to the front side of the mounting base 2. The drive end of the drive motor 3 is fixedly connected to a transmission wheel 4. The front side of the mounting base 2 is fixedly connected to a fixed seat 6. An auxiliary wheel 7 is rotatably connected inside the fixed seat 6. The transmission wheel 4 and the auxiliary wheel 7 are coupled to each other and transmit power through a rack 5 to drive the movement of the airtight door body 11. The auxiliary wheel 7 ensures the stable operation of the rack 5 and reduces wear caused by friction. The rack 5 is internally coupled to the auxiliary wheel 7 and the transmission wheel 4. The rack 5 is a key component for driving the door body movement. The rack 5 is externally fixedly connected to the connecting block 10. The connecting block 10 is connected to the top of the airtight door body 11 through the sliding connecting block 10, so that the door body can move along the predetermined track. The rack 5 is externally fixedly connected to two connecting blocks 10. The bottom of the connecting block 10 is fixedly connected to the top of the airtight door body 11. The front side of the mounting base 2 is fixedly connected to the guide block 20. The guide block 20 is installed outside the connecting block 10 and is responsible for guiding the smooth opening and closing of the airtight door body 11 to avoid jamming due to improper movement. The guide block 20 is externally slidably connected to the inside of the connecting block 10. The transmission wheel 4 and the auxiliary wheel 7 are both provided with teeth inside, and the teeth are meshed with the rack 5.
[0012] Working principle: During the opening and closing of the airtight door body 11, the sealing mechanism fixed at the bottom of the airtight door body 11 allows the airtight door body 11 to adapt to whether the ground is flat or not. When the ground is uneven, the ground puts pressure on the sealing block 15, causing the sealing block 15 to slide partially. During the partial sliding of the sealing block 15, the dynamic compensation spring 14 fixed on the side of the airtight door body 11 and the sealing block 15 provides thrust to the sealing block 15, thereby ensuring the sealing effect of the sealing block 15. The electric air inflator 18 fixed on the front side of the wall 1 fills the vacuum cavity opened inside the sealing airbag 17 with gas through the air pipe 19, thereby causing the sealing airbag 17 to inflate, and then the front side of the sealing airbag 17 to contact the rear side of the airtight door body 11, thereby further ensuring the airtightness of the airtight door body 11 after closing. The drive motor 3, fixed to the front of the wall 1 by the mounting base 2, is started, causing the transmission wheel 4, fixed to the drive end of the drive motor 3, to rotate. The transmission wheel 4 then couples with the rack 5 through the meshing teeth inside, ensuring that the transmission wheel 4 can stably drive the rack 5 to rotate during its rotation. Simultaneously, the auxiliary wheel 7, rotatably connected to the front of the wall 1 by the fixing base 6, serves as another fulcrum for the rack 5, ensuring the stability of the rack 5's rotation. During the rotation of the rack 5, the two connecting blocks 10 fixed to the outside of the rack 5 slide, ultimately causing the airtight door body 11 to slide through the connecting blocks 10. During the opening and closing of the airtight door body 11, the roller 16 connected inside the airtight door body 11 provides assistance for the sliding of the airtight door body 11. The two connecting blocks 10 fixed on the top of the airtight door body 11, together with the rack 5, provide the necessary driving force for the opening and closing of the airtight door body 11. The limiting block 8 fixed on the front side of the mounting base 2 and the threshold block 12 fixed on the front side of the sealing airbag 17 cooperate with each other to ensure that the airtight door body 11 will not be damaged due to excessive impact force during the opening and closing process.
[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A medical air-tight door capable of being quickly opened and closed, characterized in that: A mounting base (2) is fixedly connected to the front side of the wall (1). A buffer opening and closing mechanism is fixedly connected to the front side of the mounting base (2). An airtight door body (11) is fixedly connected to the bottom of the buffer opening and closing mechanism. A sealing mechanism is fixedly connected to the bottom of the airtight door body (11). Two rollers (16) are rotatably connected inside the airtight door body (11). The sealing mechanism includes multiple guide shafts (13), the outside of which are slidably connected to the inside of the airtight door body (11). Multiple dynamic compensation springs (14) are fixedly connected to the bottom of the airtight door body (11), the outside of which are located inside the multiple guide shafts (13). A sealing block (15) is fixedly connected to the bottom outside of the multiple guide shafts (13), the bottom outside of which is slidably connected to the inside of the sealing block (15). An auxiliary sealing assembly is fixedly connected to the front side of the wall (1).
2. The medical air-tight door according to claim 1, wherein: The buffered opening and closing mechanism includes a limiting block (8), the rear side of which is fixedly connected to the front side of the mounting base (2), a buffer pad (9) is fixedly connected to the right side of the limiting block (8), a threshold block (12) is fixedly connected to the bottom of the limiting block (8), the right side of the threshold block (12) is in contact with the left side of the airtight door body (11), and an opening and closing assembly is fixedly connected to the front side of the mounting base (2).
3. The medical air-tight door according to claim 1, wherein: The auxiliary sealing assembly includes a sealing airbag (17), the rear side of which is fixedly connected to the front side of the wall (1). An electric inflator (18) is fixedly connected to the front side of the wall (1), and an air pipe (19) is fixedly connected to the top of the electric inflator (18). The other end of the air pipe (19) is fixedly connected to the inside of the sealing airbag (17), and the front side of the sealing airbag (17) is in contact with the rear side of the airtight door body (11).
4. The quick open / close medical air-tight door according to claim 2, characterized in that: The opening and closing assembly includes a drive motor (3), the rear side of which is fixedly connected to the front side of the mounting base (2). The drive end of the drive motor (3) is fixedly connected to a transmission wheel (4). The front side of the mounting base (2) is fixedly connected to a fixed seat (6). An auxiliary wheel (7) is rotatably connected inside the fixed seat (6). A rack (5) is internally coupled to the auxiliary wheel (7) and the transmission wheel (4). Two connecting blocks (10) are fixedly connected to the outside of the rack (5). The bottom of the connecting block (10) is fixedly connected to the top of the airtight door body (11). A guide block (20) is fixedly connected to the front side of the mounting base (2). The outside of the guide block (20) is slidably connected to the inside of the connecting block (10).
5. The rapid openable and closable medical air-tight door according to claim 1, characterized in that: The airtight door body (11) has an adjustment groove inside, the guide shaft (13) is slidably connected to the inside of the adjustment groove, the bottom of the airtight door body (11) has a groove, the outside of the multiple dynamic compensation springs (14) are fixedly connected to the inside of the groove, and the sealing block (15) is a U-shaped block.
6. The rapid open / close medical air-tight door according to claim 3, characterized in that: The sealed airbag (17) has a vacuum chamber inside, and the other end of the air tube (19) is fixedly connected to the inside of the vacuum chamber.
7. The rapid open / close medical air-tight door according to claim 4, characterized in that: Both the transmission wheel (4) and the auxiliary wheel (7) are provided with teeth inside, and the teeth are engaged with the rack (5).
8. A medical airtight door that can be quickly opened and closed according to claim 2, characterized in that: The front side of the mounting base (2) is fixedly connected to a protective shell (21), and the inside of the protective shell (21) is provided with a receiving groove. The outside of the opening and closing component is slidably connected to the inside of the receiving groove.