Novel air-tight door

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By introducing a secondary door system into traditional closed doors, the problem of difficulty in opening and closing of large-sized closed doors is solved, and the effect of rapid opening is achieved.

CN222909879UActive Publication Date: 2025-05-27胡圣伟

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Patent Information

Application Number: CN202421486245.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-06-26
Publication Date: 2025-05-27
Estimated Expiration: 2034-06-26

AI Technical Summary

Technical Problem

Traditional large-size closed doors are difficult to open and close, and it is impossible to achieve rapid opening.

Method used

A new type of closed door is designed, including the main door system and the secondary door system. The main door system consists of the main door frame and the main door leaf. The secondary door system consists of the secondary door leaf and the secondary door frame. A secondary door door door is set on the main door leaf. The secondary door leaf can be articulated to the main door leaf airtightly and is equipped with a secondary door locking system to achieve rapid opening.

Benefits of technology

By setting up a secondary door structure, the problem of difficulty in opening and closing of traditional large-sized closed doors is solved, and rapid opening is achieved in emergencies.

✦ Generated by Eureka AI based on patent content.

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Figure CN222909879U_ABST

Patent Text Reader

Abstract

A novel air-tight door belongs to the related technical field of civil air defense equipment and comprises a main door system, the main door system comprises a main door frame arranged on a building and a main door leaf hinged to the main door frame, the main door leaf can be closed on the main door frame in an air-tight mode, a main door locking system is arranged in the main door leaf, and the main door locking system is connected with the main door frame. An auxiliary door opening is formed in the main door leaf; the auxiliary door system comprises an auxiliary door leaf, the auxiliary door leaf is hinged to the main door leaf, the auxiliary door leaf can be closed on the main door leaf in an airtight mode, and an auxiliary door locking system is arranged on the auxiliary door leaf. According to the auxiliary door leaf, the small door structure is creatively arranged on the door leaf of the large-size air-tight door, namely, the auxiliary door leaf can be quickly opened in an emergency due to the small door structure, so that the auxiliary door leaf can be quickly opened; the air-tight door solves the problems that a traditional large-size air-tight door is difficult to open and close and cannot be quickly opened.

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Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense equipment, and more specifically, to a novel airtight door. Background Art

[0002] An airtight door is a door that can increase airtightness and is mostly used in the passage from the main underground substation and the main drainage pump room to the bottom of the shaft. Its function is to prevent sudden intrusion of water. In the prior art, the door leaf of the airtight door is composed of flat steel plates, cross-shaped rib plates, ring beams, etc., and the door leaf is welded by multiple metal structural parts. Usually, the designed size of the airtight door is slightly larger than that of an ordinary residential door. In some special cases, the size of the passage opening is required to be larger, so the designed size of the airtight door will be designed to be larger, and even designed into a two-door structure.

[0003] As can be seen from the above, the airtight door is made of metal materials. If the size is large, its overall mass will increase significantly, resulting in difficult opening and closing, and thus the requirements of temporary opening and quick opening cannot be achieved. Summary of the Utility Model

[0004] (1) Technical Problem

[0005] In summary, how to solve the problems of difficult opening and closing of traditional large-sized airtight doors and the inability to achieve quick opening has become an urgent problem for those skilled in the art.

[0006] (2) Technical Solution

[0007] In order to achieve the above object, the utility model provides the following technical solution:

[0008] The utility model provides a novel airtight door. In the utility model, the novel airtight door includes:

[0009] A main door system, the main door system includes a main door frame (1) for being set on a building structure and a main door leaf (2) hinged to the main door frame. The main door leaf can be closed airtightly on the main door frame. A main door locking system (3) is arranged inside the main door leaf, and a secondary door opening is arranged on the main door leaf.

[0010] A secondary door system, the secondary door system includes a secondary door leaf (4). The secondary door leaf is hinged to the main door leaf and can be closed airtightly on the main door leaf. A secondary door locking system (5) is arranged on the secondary door leaf.

[0011] Preferably, in the novel airtight door provided by the present utility model, a secondary door frame is arranged on the main door leaf and surrounds the entrance of the secondary door, and the secondary door leaf can be hermetically closed on the secondary door frame.

[0012] Preferably, in the novel airtight door provided by the present utility model, there are two main door leaves, and the two main door leaves are of a split structure; a sealing strip (6) is arranged on one of the main door leaves, and the edge of the other main door leaf can abut against the sealing strip to achieve airtight connection after the two main door leaves are closed.

[0013] Preferably, in the novel airtight door provided by the present utility model, along the opening direction of the main door leaf; on one of the main door leaves provided with the sealing strip, an installation member (7) is arranged, the installation member is arranged on the outer side edge of the main door leaf and close to the rear side surface position of the main door leaf, and the sealing strip is fixedly arranged on the installation member; on the other main door leaf, a matching member (8) and a pressing member (9) are arranged, the matching member is arranged on the outer side edge of the main door leaf and close to the rear side surface position of the main door leaf, the matching member can abut against the sealing strip airtightly, and the pressing member is arranged on the front side of the matching member to cover the abutting joint of the matching member and the sealing strip.

[0014] Preferably, in the novel airtight door provided by the present utility model, the sealing strip and the matching member are in an inclined surface fit; the pressing member is a hollow square tube.

[0015] Preferably, in the novel airtight door provided by the present utility model, a sealing edge (10) is arranged on the front side of the pressing member for sealing the connection between the two main door leaves after the main door leaves are closed.

[0016] Preferably, in the novel airtight door provided by the present utility model, the installation member is a long strip-shaped L-shaped member, the sealing strip is fixedly arranged on the inner side surface of the installation member; a reinforcing strip is arranged on the inner side surface of the installation member, and a reinforcing groove for plug-in fit with the reinforcing strip is arranged on the sealing strip.

[0017] Preferably, in the novel airtight door provided by the present utility model, a main door frame installation groove is arranged on the main door frame, and a main door seal is arranged in the main door frame installation groove, and the main door seal can abut against the main door leaf in the closed state airtightly.

[0018] Preferably, in the novel airtight door provided by the present utility model, an installation edge is provided around the outer edge of the auxiliary door leaf, an auxiliary door leaf installation groove is provided on the installation edge, and an auxiliary door seal (11) is provided in the auxiliary door leaf installation groove. The auxiliary door seal can be airtightly abutted against the auxiliary door frame when the auxiliary door leaf is in the closed state.

[0019] Preferably, in the novel airtight door provided by the present utility model, an auxiliary door frame encryption strip that can be abutted against the auxiliary door seal is provided on the auxiliary door frame.

[0020] (III) Beneficial effects

[0021] As can be seen from the above structural design, the present utility model provides a novel airtight door, which includes: a main door system, the main door system includes a main door frame for being installed on a building structure and a main door leaf hinged to the main door frame. The main door leaf can be airtightly closed on the main door frame. A main door locking system is provided inside the main door leaf, and an auxiliary door opening is provided on the main door leaf; an auxiliary door system, the auxiliary door system includes an auxiliary door leaf, the auxiliary door leaf is hinged to the main door leaf, the auxiliary door leaf can be airtightly closed on the main door leaf, and an auxiliary door locking system is provided on the auxiliary door leaf. Through the above structural design, the present utility model creatively provides a small door structure on the door leaf of a large-sized airtight door, that is, the auxiliary door leaf of the present utility model. Due to the provision of the small door structure, the auxiliary door leaf can be quickly opened in an emergency. The present utility model solves the problems of difficult opening and closing and inability to achieve quick opening existing in traditional large-sized airtight doors. Description of the drawings

[0022] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0023] Figure 1 is a schematic structural diagram of the novel airtight door in the embodiment of the present utility model;

[0024] Figure 2 is a schematic cross-sectional structural diagram of the novel airtight door in the embodiment of the present utility model;

[0025] Figure 3 is Figure 2 an enlarged schematic diagram of the structure at box A in

[0026] Figure 4 is Figure 2 an enlarged schematic diagram of the structure at box B in

[0027] In Figures 1 to 4 the corresponding relationship between the component names and the reference numerals in the drawings is:

[0028] The main door frame 1, the main door leaf 2, the main door locking system 3, the auxiliary door leaf 4,

[0029] the auxiliary door locking system 5, the sealing strip 6, the installation member 7, the mating member 8, the press-fitting member 9,

[0030] the sealing edge 10, the auxiliary door seal 11. Specific embodiments

[0031] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than a limitation of the present utility model. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Accordingly, it is intended that the present utility model cover such modifications and variations that come within the scope of the appended claims and their equivalents.

[0032] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, they should not be construed as a limitation of the present utility model. The terms "connected" and "connected" used in the present utility model should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through intermediate components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 4 , wherein, Figure 1 is a schematic structural diagram of the new type of airtight door in the embodiment of the present utility model; Figure 2 is a schematic cross-sectional structural diagram of the new type of airtight door in the embodiment of the present utility model;

[0034] Figure 3 is Figure 2 an enlarged schematic structural diagram of the structure at box A in Figure 4 is Figure 2 an enlarged schematic structural diagram of the structure at box B in

[0035] The utility model provides a new type of airtight door. In a preferred structure of the utility model, the new type of airtight door includes a main door system (large door) and a sub-door system (small door) provided on the main door system. The main door system is used to close the doorway or passage reserved in the building structure, and the sub-door system is used to quickly open and close on the main door leaf after the main door system is closed.

[0036] In the utility model, for the main door system, its structure is as follows: The main door system includes a main door frame 1 for being set on the building structure and a main door leaf 2 hinged to the main door frame 1. The main door leaf 2 can be hermetically closed on the main door frame 1. A main door locking system 3 is arranged inside the main door leaf 2, and a sub-door opening is arranged on the main door leaf 2.

[0037] The main door frame 1 is a steel structure door frame, which is used to be set on the doorway or inside the passage of the building structure and can be fixed on the building structure through anchor bolts, etc. Then, the main door frame 1 can also be fixed and sealed on the building structure by caulking or filling cement. The utility model also arranges a hinge assembly for installing the main door leaf 2 on the main door frame 1 and reserves a lock hole on the main door frame 1 for the bolt of the main door locking system 3 to insert, so as to realize the locking of the main door leaf 2 on the main door frame 1.

[0038] For the hinge assembly, in an embodiment of the utility model, three hinge assemblies are adopted for one main door leaf 2. One of the hinge assemblies is a limit hinge assembly, and the other two hinge assemblies are support hinge assemblies. For the limit hinge assembly, it includes a lower support member and an upper support member, which are arranged at intervals. A friction plate is arranged on each of the opposite side surfaces of the lower support member and the upper support member. A door shaft is vertically arranged on the upper support member and the lower support member. A support arm is arranged on the door shaft, and the support arm is stuck between the two friction plates and closely cooperates with the friction plates. A shaft hole is arranged on the support arm, and the shaft hole closely cooperates with the door shaft. In this way, the support arm is installed between the upper support member and the lower support member and closely cooperates with the upper support member and the lower support member and cannot shake (only can rotate), playing a limiting role in the installation of the main door leaf 2. For the support hinge assembly, its general structure is the same as that of the limit hinge assembly. The difference is that: the friction plate arranged on the lower support member of the support hinge assembly is replaced by a bearing (ball bearing), and the cooperation between the support arm and the bearing can improve the smoothness of the rotation of the support arm. The three hinge assemblies are arranged at intervals on the main door frame 1 on the same side (vertically arranged at intervals from top to bottom), and the limit hinge assembly is arranged above the two support hinge assemblies.

[0039] The main door locking system 3 provided by the utility model mainly includes a hand wheel, a connecting rod, a steering member and a bolt, wherein the steering member is a transmission member installed inside the main door leaf 2 and can rotate around the inner door shaft (the inner door shaft is an shaft arranged inside the main door leaf 2 and used to install the steering member). For the installation position of the steering member inside the main door leaf 2, specific reference can be made to the structure and size of the bolt and the connecting rod, and the design standard is that the connecting rod can drive the steering member to rotate, and the steering member can drive the bolt to rotate and insert into the lock hole. The bolt is fixedly arranged relative to the steering member, and preferably, the bolt and the steering member are integrally formed. At least two steering members are arranged on the same side of the main door leaf 2 (that is, there are at least two bolts on the same side of the main door leaf 2), so that a multi-link linkage structure can be formed by hingedly connecting multiple steering members to the same connecting rod, and the hand wheel is connected to the connecting rod, and the connecting rod can drive the steering member to link. The main door leaf 2 is generally a rectangular structure, and steering components are provided corresponding to the side, top and bottom sides of the main door leaf 2, and the connecting rods on two adjacent sides are connected by the steering components located at the corners.

[0040] The main door leaf 2 includes a main door leaf frame (metal frame), and metal skins are arranged on the front and back of the main door leaf frame. The main door locking system 3 is arranged inside the main door leaf 2. If the main door leaf frame affects the movement of the main door locking system 3, holes or grooves can be opened on it.

[0041] The new type of enclosed door provided by the utility model is mainly used in large-sized doorways or passages, so the main door leaf 2 is generally provided with two leaves. The main door leaf 2 includes two leaves, and the two main door leaves 2 are of a double-opening structure, that is, the two main door leaves 2 can be respectively rotated to the left and to the right to open in a closed state. Among the two main door leaves 2, a sealing strip 6 is provided on one of the main door leaves 2 (one side of the main door leaf 2 is fixedly connected to the support arm, and the other side of the main door leaf 2 is provided with a sealing strip 6, specifically, the sealing strip 6 is provided on the side surface of the main door leaf 2), and the door edge of the other main door leaf 2 can be against the sealing strip 6 to achieve an airtight connection between the two main door leaves 2 after closing.

[0042] For the convenience of structural description, the present utility model defines a direction, that is: along the opening direction of the main door leaf 2 (i.e., the main door leaf 2 opens in the closed state). On one main door leaf 2 provided with a sealing strip 6, an installation member 7 is provided. The installation member 7 is arranged on the outer side edge of the main door leaf 2 and close to the rear side surface of the main door leaf 2. Taking the main door leaf 2 as an inward-opening type, the main door leaf 2 has an outer side surface (i.e., the above-mentioned rear side surface). The installation member 7 is arranged on the side surface of the main door leaf 2 (i.e., the above-mentioned outer side edge) and close to the outer side surface of the main door leaf 2. The installation member 7 is a metal member, and the length of the installation member 7 is the same as the height of the main door leaf 2. The installation member 7 is fixedly arranged on the main door leaf 2, and the sealing strip 6 is fixedly arranged on the installation member 7. On the other main door leaf 2, a matching member 8 (the main function of the matching member 8 is to abut against the sealing strip 6, so as to ensure the airtightness after the two main door leaves 2 are closed) and a pressing member 9 (used to cover the gap where the sealing strip 6 contacts the matching member 8 after the two main door leaves 2 are closed) are provided. The matching member 8 is arranged on the outer side edge of the main door leaf 2 and close to the rear side surface of the main door leaf 2 (after the two main door leaves 2 are closed, the matching member 8 corresponds to the sealing strip 6). The matching member 8 can be airtightly abutted against the sealing strip 6 (a certain pressure can exist between the matching member 8 and the sealing strip 6, that is, the matching member 8 applies a certain pressure to the sealing strip 6, so as to improve the airtightness of the two main door leaves 2). The pressing member 9 is arranged on the front side of the matching member 8 and is used to cover the abutting connection part between the matching member 8 and the sealing strip 6. The structure of the pressing member 9 will not affect the opening and closing of the two main door leaves 2.

[0043] Furthermore, the sealing strip 6 and the matching member 8 are in an inclined surface fit. The inclined surface fit method can increase the contact area between the sealing strip 6 and the matching member 8 and improve the airtightness. The pressing member 9 is a hollow metal square tube. On the front side of the pressing member 9, a sealing edge 10 is provided for closing the connection part of the two main door leaves 2 after the main door leaf 2 is closed. The sealing edge 10, the pressing member 9 and the matching member 8 can form a structure similar to a step. After the two main door leaves 2 are closed, the sealing edge 10 can close the door gap of the two main door leaves 2, the pressing member 9 can close the connection seam between the matching member 8 and the sealing strip 6, and the matching member 8 and the sealing strip 6 can ensure the airtightness after the two main door leaves 2 are closed.

[0044] The present utility model further provides an installation member 7 on the main door leaf 2. The installation member 7 is used for fixedly installing the sealing strip 6 on the main door leaf 2. The installation member 7 can be arranged on the main door leaf 2 by bolts or can be fixedly arranged on the main door leaf 2 by welding. Specifically, the installation member 7 is in a long strip shape (the installation member 7 is a long straight member), an L-shaped member (the installation member 7 is cut transversely, and the cross-section is L-shaped). The sealing strip 6 is fixedly arranged (can be fixed by bolts or can be fixed by strong adhesive) on the inner side surface of the installation member 7. Further, a reinforcing strip (the reinforcing strip and the installation member 7 are of an integrally formed structure) is arranged on the inner side surface of the installation member 7, and a reinforcing groove for inserting and matching with the reinforcing strip is arranged on the sealing strip 6. The cooperation of the reinforcing strip and the sealing strip 6 can improve the firmness of the sealing strip 6 arranged on the installation member 7.

[0045] The present utility model provides an installation groove for the main door frame 1 on the main door frame 1, and a main door seal (made of the same material as the above-mentioned sealing strip 6) is arranged in the installation groove of the main door frame 1. The main door seal can be airtight with the main door leaf 2 in the closed state. Specifically, square tube structures are arranged on the outer side, top side and bottom side of the main door leaf 2. The square tube structures are arranged corresponding to the main door seal. After the main door leaf 2 is closed, the square tube structures can press the main door seal, so as to ensure the airtightness between the main door leaf 2 and the main door frame 1 after the main door leaf 2 is closed.

[0046] In the present utility model, for the sub-door system, its structure is specifically as follows: The sub-door system includes a sub-door leaf 4. The sub-door leaf 4 is hinged to the main door leaf 2. The sub-door leaf 4 can be airtightly closed on the main door leaf 2. A sub-door locking system 5 is arranged on the sub-door leaf 4. The present utility model provides a sub-door opening on the main door leaf 2, and a hinge assembly is arranged at a side position of the main door leaf 2 where the sub-door opening is located. The hinge assembly for installing the sub-door leaf 4 in the present utility model also includes a limit hinge assembly and a support hinge assembly. Its specific structure can refer to the hinge assembly for installing the main door leaf 2 above, and will not be elaborated here. Since the size of the sub-door leaf 4 is small, the present utility model only provides a limit hinge assembly and a support hinge assembly to install the sub-door leaf 4. Further, the rotation direction of the sub-door leaf 4 is the same as that of the main door leaf 2 for installing the sub-door leaf 4.

[0047] The secondary door leaf 4 is installed on the main door leaf 2. After the secondary door leaf 4 is closed, a high degree of airtightness should be maintained between it and the main door leaf 2. For this purpose, the following structural design is proposed in the present utility model: A secondary door frame is provided on the main door leaf 2 and surrounds the secondary door opening. The secondary door frame is a metal door frame structure. The secondary door frame is provided on the main door leaf 2 and is welded to the metal skeleton of the main door leaf 2. The secondary door leaf 4 can be closed airtightly on the secondary door frame. Specifically, an installation edge is provided around the outer edge of the secondary door leaf 4. The installation edge extends outward along the outer side of the secondary door leaf 4. A secondary door leaf 4 installation groove is provided on the installation edge. A secondary door seal 12 (made of the same material as the above-mentioned sealing strip 6) is provided in the secondary door leaf 4 installation groove. The secondary door seal 12 can be airtightly abutted against the secondary door frame in the closed state of the secondary door leaf 4. Further, a secondary door frame reinforcement strip that can be abutted against the secondary door seal 12 is provided on the secondary door frame. The secondary door frame reinforcement strip is a rib structure protruding relative to the outer side surface of the main door leaf 2. After the secondary door leaf 4 is closed, the secondary door frame reinforcement strip can press on the secondary door seal 12, thereby realizing the airtight closure of the secondary door leaf 4 on the main door leaf 2. The secondary door frame reinforcement strip can be provided as one or two (two are arranged in parallel at intervals). The surface of the secondary door frame reinforcement strip that abuts against the secondary door seal 12 is a smooth curved surface or a flat surface.

[0048] The present utility model is provided with a secondary door locking system 5 on the secondary door leaf 4. The secondary door locking system 5 is similar in structure to the main door locking system 3 of the present utility model. The difference is that the number of bolts provided in the secondary door locking system 5 is smaller and is only provided on both sides of the secondary door leaf 4.

[0049] The technical requirements of the present utility model are as follows: The main door frame 1 is fixedly installed at the doorway of the building structure, and concrete is poured for reinforcement (sealing). After the main door frame 1 is fixed, the plane of the door frame angle steel should be a vertical plane, and the verticality tolerance in the front, back, left, and right directions is 2.5 mm. The temporary support angle steel can only be removed after the formwork is removed. The metal parts (main door frame 1, main door leaf 2, secondary door leaf 4, etc.) of the present utility model should be prevented from deforming during transportation and installation. The exposed metal surfaces should be painted with two coats of antirust paint and two coats of white topcoat.

[0050] As can be seen from the above structural design, the present utility model provides a novel airtight door, which comprises: a main door system, the main door system includes a main door frame 1 for being arranged on a building structure and a main door leaf 2 hinged to the main door frame 1, the main door leaf 2 can be hermetically closed on the main door frame 1, a main door locking system 3 is arranged inside the main door leaf 2, and an auxiliary door opening is arranged on the main door leaf 2; an auxiliary door system, the auxiliary door system includes an auxiliary door leaf 4, the auxiliary door leaf 4 is hinged to the main door leaf 2, the auxiliary door leaf 4 can be hermetically closed on the main door leaf 2, and an auxiliary door locking system 5 is arranged on the auxiliary door leaf 4. Through the above structural design, the present utility model creatively provides a small door structure on the door leaf of a large-sized airtight door, that is, the auxiliary door leaf 4 of the present utility model. Due to the provision of the small door structure, the auxiliary door leaf 4 can be quickly opened in an emergency. The present utility model solves the problems of difficult opening and closing and inability to achieve quick opening existing in traditional large-sized airtight doors.

[0051] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new type of airtight door, characterized in that: include: A main door system, the main door system comprising a main door frame (1) for being installed on a building structure and a main door leaf (2) hinged on the main door frame, the main door leaf being airtightly closed on the main door frame, a main door locking system (3) being arranged inside the main door leaf, and a secondary door opening being arranged on the main door leaf; A secondary door system, the secondary door system comprises a secondary door leaf (4), the secondary door leaf is hinged on the main door leaf, the secondary door leaf can be airtightly closed on the main door leaf, and a secondary door locking system (5) is arranged on the secondary door leaf.

2. The new airtight door according to claim 1 is characterized in that: A secondary door frame is arranged on the main door leaf and around the secondary door opening, and the secondary door leaf can be airtightly closed on the secondary door frame.

3. The new airtight door according to claim 1 is characterized in that: The main door leafs include two, and the two main door leafs are of a double-opening structure; A sealing strip (6) is provided on one of the main door leaves, and the door edge of the other main door leaf can be abutted against the sealing strip to achieve an airtight connection between the two main door leaves after they are closed.

4. The new airtight door according to claim 3 is characterized in that: Along the opening direction of the main door leaf; A mounting component (7) is provided on one of the main door panels provided with the sealing strip, the mounting component is provided on the outer side of the main door panel and close to the rear side of the main door panel, and the sealing strip is fixedly provided on the mounting component; A matching component (8) and a pressing component (9) are provided on the other main door leaf. The matching component is provided on the outer side edge of the main door leaf and close to the rear side surface of the main door leaf. The matching component can be airtightly abutted against the sealing strip. The pressing component is provided on the front side of the matching component to cover the abutting connection between the matching component and the sealing strip.

5. The new airtight door according to claim 4 is characterized in that: The sealing strip and the matching component are matched with each other in an inclined plane; The press-fit component is a hollow square tube.

6. The new airtight door according to claim 4 is characterized in that: A sealing edge (10) is arranged on the front side of the press-fitting component, and is used for sealing the connection between the two main door leaves after the main door leaves are closed.

7. The new airtight door according to claim 4 is characterized in that: The installation member is a long, L-shaped member, and the sealing strip is fixedly arranged on the inner side surface of the installation member; A reinforcement strip is arranged on the inner side surface of the installation component, and a reinforcement groove which is plugged and matched with the reinforcement strip is arranged on the sealing strip.

8. The new airtight door according to claim 2 is characterized in that: A main door frame installation groove is arranged on the main door frame, and a main door seal is arranged in the main door frame installation groove. The main door seal can offset the air tightness of the main door leaf in a closed state.

9. The new airtight door according to claim 8, characterized in that: An installation edge is arranged around the outer edge of the auxiliary door leaf, an auxiliary door leaf installation groove is arranged on the installation edge, and an auxiliary door seal (11) is arranged in the auxiliary door leaf installation groove. The auxiliary door seal can be airtightly offset against the auxiliary door frame when the auxiliary door leaf is in a closed state.

10. The new airtight door according to claim 9, characterized in that: The auxiliary door frame is provided with an auxiliary door frame encryption strip which can abut against the auxiliary door sealing member.