Weather-tight airtight double-open electromagnetic shielding fireproof door
By incorporating double sealing strips and non-combustible materials into the fire door, combined with connecting components, the problem of insufficient sealing is solved, achieving higher sealing and fire resistance performance.
Patent Information
- Application Number
- CN202521048694.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-05-26
AI Technical Summary
Existing fireproof double-leaf shielded doors have insufficient sealing, allowing wind, rain, or gas to pass through the gaps.
First and second sealing strips are installed between the door frame and the door panel, and non-combustible materials are used on the inside of the door panel and the door frame, combined with cross-groove pan head screws and connecting components to improve sealing and fire resistance.
It achieves a double seal between the door frame and the door panel, enhances fire resistance, prevents wind, rain or gas from passing through the gaps, and improves the overall sealing and fire resistance of the fire door.
Smart Images

Figure CN223975070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fireproof double-opening shielded doors, specifically a windproof, rainproof, and airproof double-opening electromagnetic shielded fireproof door. Background Technology
[0002] Fire-resistant double-leaf shielded doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation for a certain period of time, while also having the function of shielding electromagnetic interference. They not only prevent the spread of fire and ensure the safe evacuation of personnel in the event of a fire, but also effectively shield external electromagnetic signals, protecting internal equipment from interference.
[0003] However, existing fire-resistant double-leaf shielded doors have limited sealing capabilities, allowing wind, rain, or gas to pass through the gaps, thus presenting limitations. Therefore, a wind-, rain-, and airtight double-leaf electromagnetic shielded fire door is invented. Utility Model Content
[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:
[0005] A windproof, rainproof, and airproof double-leaf electromagnetic shielded fire door includes a door frame that is detachably connected to a wall via a connecting assembly. Both ends of the inner cavity of the door frame are rotatably connected to a door panel via hinges. A first sealing strip is provided on the rear side between the door frame and the door panel, and a second sealing strip is provided on the front side between the door frame and the door panel.
[0006] As a preferred embodiment of the windproof, rainproof, and airproof double-opening electromagnetic shielded fire door described in this utility model, the ends of the two sets of door panels away from the hinges are connected together by a door lock.
[0007] As a preferred embodiment of the windproof, rainproof, and airproof double-leaf electromagnetic shielded fire door described in this utility model, the door frame is provided with an observation window to facilitate personnel to view the situation inside or outside the door.
[0008] As a preferred embodiment of the windproof, rainproof, and airproof double-opening electromagnetic shielded fireproof door described in this utility model, the inner surface of the door panel is provided with a first non-combustible material, and the inner cavities of both the door panel and the door frame are provided with a second non-combustible material.
[0009] As a preferred embodiment of the windproof, rainproof, and airproof double-opening electromagnetic shielded fire door described in this utility model, the connecting component includes a cross-grooved pan head screw and a nut. One end of the cross-grooved pan head screw passes through the door frame and the wall in sequence, and the nut is threaded onto one end of the cross-grooved pan head screw.
[0010] As a preferred embodiment of the windproof, rainproof, and airproof double-opening electromagnetic shielded fire door described in this utility model, one end of the cross-groove pan head screw is fitted with a washer, and the washer is in close contact with the wall.
[0011] As a preferred embodiment of the windproof, rainproof, and airproof double-opening electromagnetic shielded fire door described in this utility model, wherein: one end of the cross-groove pan head screw is fitted with a spring washer, and the spring washer is in close contact with the washer and the nut.
[0012] Compared with existing technologies:
[0013] By installing a first sealing strip and a second sealing strip between the door frame and the door panel, a double seal can be formed between the door frame and the door panel, thereby improving the sealing performance of the door frame and the door panel and preventing wind, rain or gas from passing through the gaps of the fireproof double-leaf shielded door; in addition, by installing a first non-combustible material and a second non-combustible material, double fireproofing can be achieved on the door panel, thereby improving the fire resistance of the fireproof double-leaf shielded door to a certain extent. Attached Figure Description
[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a side view of the structure of this utility model;
[0016] Figure 3 This is a top view of the structure of this utility model;
[0017] Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.
[0018] In the diagram: 1. Door frame; 2. Door panel; 3. Hinge; 4. Door lock; 5. First sealing strip; 6. Second sealing strip; 7. First non-combustible material; 8. Second non-combustible material; 9. Cross-head screw; 10. Washer; 11. Nut; 12. Spring washer; 13. Observation window. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0020] This utility model provides a windproof, rainproof, and airproof double-opening electromagnetically shielded fire door. Please refer to [link / reference]. Figures 1-4The system includes a door frame 1 detachably connected to the wall via a connecting assembly. Both ends of the inner cavity of the door frame 1 are rotatably connected to door panels 2 via hinges 3. A first sealing strip 5 is provided on the rear side between the door frame 1 and the door panels 2, and a second sealing strip 6 is provided on the front side between the door frame 1 and the door panels 2. By providing the first sealing strip 5 and the second sealing strip 6, a double seal can be formed between the door frame 1 and the door panels 2. The ends of the two sets of door panels 2 away from the hinges 3 are connected together via a door lock 4. An observation window 13 is provided on the door frame 1 to allow personnel to view the situation inside or outside the door. The inner surface of the door panels 2 is provided with a first non-combustible material 7, and the inner cavities of both the door panels 2 and the door frame 1 are provided with a second non-combustible material 8. The first sealing strip 5 is preferably a fire-resistant expansion sealing strip; the second sealing strip 6 is preferably a fire-resistant sealing strip; the first non-combustible material 7 is preferably an inorganic fire-resistant core board; and the second non-combustible material 8 is preferably rock wool.
[0021] The connecting assembly includes a cross-head pan head screw 9, a washer 10, a nut 11, and a spring washer 12;
[0022] One end of the cross-head pan screw 9 passes through the door frame 1 and the wall in sequence, and the nut 11 is threaded onto one end of the cross-head pan screw 9. One end of the cross-head pan screw 9 is fitted with a washer 10, and the washer 10 is in close contact with the wall. One end of the cross-head pan screw 9 is fitted with a spring washer 12, and the spring washer 12 is in close contact with the washer 10 and the nut 11.
[0023] In practical use, the specific operating steps for those skilled in the art are as follows:
[0024] When installing the door frame 1, first pass one end of the cross-head pan screw 9 through the door frame 1 and the wall in sequence. Then, put the washer 10 and the spring washer 12 on one end of the cross-head pan screw 9 in sequence. After that, thread the nut 11 onto one end of the cross-head pan screw 9. At this point, the door frame 1 can be installed.
[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A weather tight, air tight, double-leaf electromagnetic shielded fire door, comprising a door frame (1) detachably connected to a wall body through a connecting assembly, both ends of an inner cavity of the door frame (1) are rotatably connected to a door leaf (2) through a hinge (3), characterized in that, The back side between the door frame (1) and the door plate (2) is provided with a first sealing rubber strip (5), and the front side between the door frame (1) and the door plate (2) is provided with a second sealing rubber strip (6).
2. The weather-stripped air-tight double-acting electromagnetic shielded fire door according to claim 1, wherein, Two groups of the door plate (2) are connected together by a door lock (4) at the end away from the hinge (3).
3. The weather-stripped air-tight double-acting electromagnetic shielded fire door of claim 1, wherein, The door frame (1) is provided with an observation window (13) to facilitate personnel to view the inside or inside and outside conditions.
4. The weather-stripped air-tight double-acting electromagnetic shielded fire door of claim 1, wherein, The inner surface of the door plate (2) is provided with a first non-combustible material (7), and the inner cavity of the door plate (2) and the door frame (1) is provided with a second non-combustible material (8).
5. The weather-stripped air-tight double-acting electromagnetic shielded fire door according to claim 1, wherein, The connecting assembly comprises a cross slot head screw (9) and a nut (11), one end of the cross slot head screw (9) passes through the door frame (1) and the wall in sequence, and the nut (11) is threadedly connected to one end of the cross slot head screw (9).
6. The weather-stripped air-tight double-acting electromagnetic shielded fire door of claim 5, wherein, The one end of the cross slot head screw (9) is sleeved with a gasket (10), and the gasket (10) is in close contact with the wall.
7. The weather-stripped air-tight double-acting electromagnetic shielded fire door according to claim 6, wherein, The one end of the cross slot head screw (9) is sleeved with a spring washer (12), and the spring washer (12) is in close contact with the gasket (10) and the nut (11).