Fireproof isolation structure of large public building

By designing fire-proof isolation walls and door frames in fire-proof isolation structures of large public buildings, combined with the design of sealing frames, vent pipes and sealing rubber pipes, the problem of existing fire-proof doors being unable to isolate smoke and having a short service life in large fire situations is solved, and the problem of existing fire-proof doors being unable to isolate smoke and having a short service life in large fire situations is achieved. More efficient smoke sealing and extended service life of fire doors.

CN222457271UActive Publication Date: 2025-02-11CCCC THIRD HIGHWAY ENG CO LTD
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Patent Information

Application Number
CN202421218253.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-02-11
Estimated Expiration
2034-05-30

AI Technical Summary

Technical Problem

Existing fire doors cannot be separated from smoke when facing fires, and it is difficult to persist for a long time when the fire is large, so they cannot meet the needs of use.

Method used

A fire-proof isolation structure of large public buildings is designed, including fire-proof isolation walls and door frames. A sealing frame and ventilation pipe are installed on the inner side of the door frame, and a sealing rubber pipe is installed on the outer side of the sealing frame. The sealing rubber pipe is realized through the use of the flue gas detection sensor and controller. Inflatable and exhaust gas, enhance sealing, and a dry powder fire extinguisher is installed on the inner wall of the upper side of the door frame to deal with high temperature open flames.

Benefits of technology

It effectively solves the problem of smoke leakage, enhances the sealing of the fire door, extends the service life of the fire door, and promptly detects and deals with potential safety hazards by monitoring the fire situation and the closed state of the door in real time.

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    Figure CN222457271U_ABST
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Abstract

The utility model discloses a fireproof isolation structure of a large public building, and relates to the technical field of fireproof doors. A sealing frame is arranged on the inner side of the door frame, a limiting cavity is formed in the inner side of the sealing frame, a ventilation pipe is arranged on the inner side of the limiting cavity, the rear side end of the ventilation pipe is fixedly connected with a sealing rubber pipe, the rear side end of the sealing rubber pipe penetrates through the rear side wall of the limiting cavity and extends to the rear side of the sealing frame, and the left side wall and the right side wall of the sealing rubber pipe are folded inwards. When a smoke detection sensor detects smoke leakage, an inflation pump and an electromagnetic three-way valve are opened through a controller to inflate a ventilation pipe and a sealing rubber pipe, when the sealing rubber pipe is inflated, folding parts of the left side wall and the right side wall of the sealing rubber pipe are unfolded, and therefore the sealing performance between the sealing rubber pipe and a sealing limiting groove is improved; the problem of smoke leakage is effectively solved, when the fireproof isolation door needs to be opened, the electromagnetic three-way valve is opened to communicate the exhaust pipe with the breather pipe, and gas is exhausted from the exhaust pipe along with pulling of the fireproof isolation door towards the rear side.
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Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a fireproof isolation structure of a large public building. Background Art

[0002] Fire doors are defined as fire doors that have passed the fire resistance test of the new national standard GB_12955-2008 for fire doors implemented on January 1, 2009 by a laboratory designated by the Ministry of Fire Affairs and the Ministry of Economic Affairs, and have obtained a verification registration certificate and authorized mark issued by the Bureau of Standards, Metrology and Inspection of the Ministry of Economic Affairs. Fire doors are defined by the US NFPA and IBC specifications as "any combination of fire-resistant door leaves, door frames, hardware and other accessories that can jointly provide a certain degree of fire protection for the opening."

[0003] Fire doors are the last line of defense for safety and can protect people and property in the face of disasters. Existing protective doors do not have a smoke-proof function and cannot protect people in the face of a fire. Existing fire doors generally only achieve the purpose of fire protection through their own materials. In the case of a large fire, it is difficult for traditional fire doors to last for a long time and thus cannot meet the needs of use. Therefore, the present application proposes a fire isolation structure for large public buildings to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fireproof isolation structure for a large public building, which solves the technical problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large public building fire isolation structure, comprising a fire isolation wall and a door frame, the door frame is embedded in the fire isolation wall, a sealing frame is arranged on the inner side of the door frame, the outer end of the sealing frame is fixedly connected to the inner wall of the door frame, a fire isolation door is hingedly connected to the rear end of the left inner wall of the door frame through a hinge, a fire isolation door is arranged at one end away from the door frame, a fire lock is arranged, a limited cavity is arranged on the inner side of the sealing frame, the limited cavity is annular in structure, a ventilation pipe is arranged on the inner side of the limited cavity, a sealing rubber tube is fixedly connected to the rear side end of the ventilation pipe, the rear side end of the sealing rubber tube passes through the rear wall of the limited cavity and extends to the rear side of the sealing frame, and the left and right side walls of the sealing rubber tube are folded inwardly;

[0006] The fireproof isolation door includes a protective outer frame, a sealing groove is provided at the front end of the protective outer frame, a sealing limiting groove is provided at the rear end of the sealing groove, the size of the sealing limiting groove is larger than the size of the sealing groove, the sealing groove is annular, the sealing groove is located directly behind the sealing rubber tube, and the sealing rubber tube is adapted to the sealing groove.

[0007] Preferably, a mounting groove is provided at the lower end of the door frame, an air pump is provided on the inner side of the mounting groove, an air duct is fixedly connected to the output end of the air pump, the air duct is communicated with the ventilation pipe, an electromagnetic three-way valve is provided on the air duct, an exhaust pipe is provided on the electromagnetic three-way valve, and a controller is externally connected to the electromagnetic three-way valve.

[0008] Preferably, a dry powder fire extinguisher is fixedly connected to the upper inner wall of the door frame, and the dry powder fire extinguisher is located on the front side of the fire isolation door.

[0009] Preferably, a smoke detection sensor is provided above the door frame, the smoke detection sensor is fixed on the fire isolation wall, and the smoke detection sensor is electrically connected to the controller.

[0010] Preferably, the fireproof isolation door further comprises an inner support frame, the outer end of the inner support frame is fixedly connected to the inner wall of the protective outer frame, and the space between the inner support frame and the outer protective outer frame is filled with fireproof and heat-insulating filler.

[0011] Preferably, a fireproof glass window is provided on the fireproof isolation door, a door closing detection magnet is provided on the rear side of the fireproof isolation door, and a door closing detection alarm is provided on the rear side wall of the door frame.

[0012] Compared with the related art, the fire isolation structure of a large public building provided by the utility model has the following beneficial effects:

[0013] 1. The utility model provides a fire isolation structure for a large public building. In the device, a ventilation pipe and a sealing rubber pipe are arranged on the rear side of a sealing frame. After the fire isolation door is closed, the rear side end of the sealing rubber pipe passes through the sealing groove and extends into the sealing limit groove, and abuts against the bottom of the sealing limit groove, thereby sealing the gap between the sealing frame and the fire isolation door. When the smoke detection sensor detects that there is still smoke leakage, the air pump and the electromagnetic three-way valve are opened by the controller to inflate the ventilation pipe and the sealing rubber pipe. When the sealing rubber pipe is inflated, the folded parts of the left and right side walls of the sealing rubber pipe are unfolded, thereby improving the sealing between the sealing rubber pipe and the sealing limit groove, thereby effectively solving the problem of smoke leakage. When the fire isolation door needs to be opened, the electromagnetic three-way valve is opened to connect the exhaust pipe with the ventilation pipe. As the fire isolation door is pulled backward, the sealing groove squeezes the sealing rubber pipe, and the gas is discharged through the exhaust pipe. The left and right side walls of the sealing rubber pipe are folded inward again, thereby opening the fire isolation door.

[0014] 2. The utility model provides a fire isolation structure for a large public building. In this device, a dry powder fire extinguisher is arranged on the inner wall of the upper side of the door frame. When encountering a high-temperature open flame, the dry powder fire extinguisher switch is turned on to extinguish the fire on the front side of the fire isolation door. At the same time, a thin film will be formed on the surface of the burning object under the action of high temperature to isolate oxygen, thereby extinguishing the fire, thereby effectively preventing the fire door from being always in the fire and increasing the service life of the fire door.

[0015] 3. The utility model provides a fire isolation structure for large public buildings. By using a smoke detection sensor, a door closing detection alarm and a door closing detection magnet in combination, the fire situation and the door closing status can be monitored in real time, and potential safety hazards can be discovered and dealt with in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the door frame section of the utility model;

[0019] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0020] Figure 5 This is another perspective schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0022] Figure 7 This is a schematic diagram of the cross-sectional three-dimensional structure of the fireproof isolation door of the utility model;

[0023] Figure 8 for Figure 7 A partial enlarged view of point C in the middle.

[0024] In the figure: 1. Fireproof isolation wall; 2. Door frame; 3. Sealing frame; 4. Dry powder fire extinguisher; 5. Fireproof isolation door; 6. Fireproof glass window; 7. Fireproof lock; 8. Door closing detection magnet; 9. Door closing detection alarm; 10. Smoke detection sensor; 11. Limiting cavity; 12. Ventilation pipe; 13. Sealing rubber tube; 14. Protective outer frame; 15. Inner support frame; 16. Fireproof and heat-insulating filling material; 17. Sealing limiting groove; 18. Sealing groove; 19. Installation groove; 20. Air pump; 21. Air guide pipe; 22. Solenoid three-way valve. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-8 The utility model provides a technical solution: a fireproof isolation structure of a large public building, comprising a fireproof isolation wall 1 and a door frame 2, the door frame 2 is embedded in the fireproof isolation wall 1, a sealing frame 3 is arranged on the inner side of the door frame 2, the outer end of the sealing frame 3 is fixedly connected to the inner wall of the door frame 2, a fireproof isolation door 5 is hingedly connected to the rear end of the left inner wall of the door frame 2 through a hinge, a fireproof isolation door 5 is arranged on the end away from the door frame 2, a fireproof lock 7 is arranged, a limiting cavity 11 is arranged on the inner side of the sealing frame 3, the limiting cavity 11 is annular in structure, a ventilation pipe 12 is arranged on the inner side of the limiting cavity 11, a sealing rubber tube 13 is fixedly connected to the rear side end of the ventilation pipe 12, the rear side end of the sealing rubber tube 13 passes through the rear side wall of the limiting cavity 11, and extends to the rear side of the sealing frame 3, and the left and right side walls of the sealing rubber tube 13 are folded inwardly;

[0027] The fireproof isolation door 5 includes a protective outer frame 14, a sealing groove 18 is provided at the front side end of the protective outer frame 14, a sealing limit groove 17 is provided at the rear side end of the sealing groove 18, the size of the sealing limit groove 17 is larger than the size of the sealing groove 18, the sealing groove 18 is annular, and the sealing groove 18 is located directly behind the sealing rubber tube 13, and the sealing rubber tube 13 is adapted to the sealing groove 18;

[0028] The lower end of the door frame 2 is provided with a mounting groove 19, and an air pump 20 is provided inside the mounting groove 19. An air guide pipe 21 is fixedly connected to the output end of the air pump 20, and the air guide pipe 21 is communicated with the ventilation pipe 12. An electromagnetic three-way valve 22 is provided on the air guide pipe 21, and an exhaust pipe is provided on the electromagnetic three-way valve 22. The electromagnetic three-way valve 22 is externally connected to a controller;

[0029] A dry powder fire extinguisher 4 is fixedly connected to the inner wall of the upper side of the door frame 2. The dry powder fire extinguisher 4 is located at the front side of the fire isolation door 5. When encountering a high-temperature open flame, the dry powder fire extinguisher 4 switches on and off to extinguish the fire at the front side of the fire isolation door 5. At the same time, a thin film will be formed on the surface of the burning object under the action of high temperature to isolate oxygen, thereby extinguishing the fire, thereby effectively preventing the fire door from being always in the fire and improving the service life of the fire door;

[0030] A smoke detection sensor 10 is arranged above the door frame 2. The smoke detection sensor 10 is fixed on the fireproof isolation wall 1. The smoke detection sensor 10 is electrically connected to the controller. When the smoke detection sensor 10 detects that there is still smoke leakage, the controller opens the air pump 20 and the electromagnetic three-way valve 22 to inflate the ventilation pipe 12 and the sealing rubber tube 13. When the sealing rubber tube 13 is inflated, the folded parts of the left and right side walls of the sealing rubber tube 13 are unfolded, thereby improving the sealing between the sealing rubber tube 13 and the sealing limit groove 17, thereby effectively solving the problem of smoke leakage. When it is necessary to open the fireproof isolation door 5, the electromagnetic three-way valve 22 is opened to connect the exhaust pipe with the ventilation pipe 12. As the fireproof isolation door 5 is pulled backward, the sealing groove 18 squeezes the sealing rubber tube 13, and the gas is discharged through the exhaust pipe. The left and right side walls of the sealing rubber tube 13 are folded inward again, thereby opening the fireproof isolation door 5.

[0031] The fireproof isolation door 5 further includes an inner support frame 15, the outer end of the inner support frame 15 is fixedly connected to the inner side wall of the protective outer frame 14, and a fireproof and heat-insulating filler 16 is filled between the inner support frame 15 and the outer protective outer frame 14;

[0032] A fireproof glass window 6 is provided on the fireproof isolation door 5, through which the fire situation can be easily observed. A door closing detection magnet 8 is provided on the rear side of the fireproof isolation door 5, and a door closing detection alarm 9 is provided on the rear side wall of the door frame 2. The door closing detection alarm 9 and the door closing detection magnet 8 are used together to monitor the closing status of the door in real time, so as to promptly discover and deal with potential safety hazards.

[0033] Working principle: When in use, the door closing detection alarm 9 and the door closing detection magnet 8 are used together to monitor the closing state of the door in real time, and to promptly discover and deal with potential safety hazards. When the fire isolation door 5 is closed, the front side end of the fire isolation door 5 is always in contact with the sealing frame 3, and the rear side end of the sealing rubber tube 13 passes through the sealing groove 18 and abuts against the bottom of the sealing limit groove 17, thereby sealing the gap between the sealing frame 3 and the fire isolation door 5. The sealing frame 3 and the fire isolation door 5 are locked by the fireproof lock 7. A dry powder fire extinguisher 4 is provided on the upper inner wall of the door frame 2. When encountering a high-temperature open flame, the dry powder fire extinguisher 4 is switched on and off to extinguish the fire on the front side of the fire isolation door 5. At the same time, a thin film will be formed on the surface of the burning object under the action of high temperature to isolate oxygen, thereby extinguishing the fire, thereby effectively avoiding The fire door is always in the fire, which improves the service life of the fire door. When the smoke detection sensor 10 detects that there is still smoke leakage, the air pump 20 and the electromagnetic three-way valve 22 are opened by the controller to inflate the ventilation pipe 12 and the sealing rubber tube 13. When the sealing rubber tube 13 is inflated, the folded parts of the left and right side walls of the sealing rubber tube 13 are unfolded, thereby improving the sealing between the sealing rubber tube 13 and the sealing limit groove 17, thereby effectively solving the problem of smoke leakage. When it is necessary to open the fire isolation door 5, the electromagnetic three-way valve 22 is opened to connect the exhaust pipe with the ventilation pipe 12. As the fire isolation door 5 is pulled backward, the sealing groove 18 squeezes the sealing rubber tube 13, and the gas is discharged through the exhaust pipe. The left and right side walls of the sealing rubber tube 13 are folded inward again, thereby opening the fire isolation door 5.

Claims

1. A fireproof isolation structure for a large public building, comprising a fireproof isolation wall (1) and a door frame (2), characterized in that: The door frame (2) is embedded in the fireproof isolation wall (1); a sealing frame (3) is arranged on the inner side of the door frame (2); the outer end of the sealing frame (3) is fixedly connected to the inner wall of the door frame (2); a fireproof isolation door (5) is hingedly connected to the rear end of the left inner wall of the door frame (2) through a hinge; a fireproof isolation door (5) is arranged on the end away from the door frame (2); a limiting cavity (11) is arranged on the inner side of the sealing frame (3); the limiting cavity (11) is annular in structure; a ventilation pipe (12) is arranged on the inner side of the limiting cavity (11); a sealing rubber tube (13) is fixedly connected to the rear end of the ventilation pipe (12); the rear end of the sealing rubber tube (13) passes through the rear wall of the limiting cavity (11) and extends to the rear side of the sealing frame (3); the left and right side walls of the sealing rubber tube (13) are folded inwards; The fireproof isolation door (5) comprises a protective outer frame (14), a sealing groove (18) is provided at the front side end of the protective outer frame (14), a sealing limit groove (17) is provided at the rear side end of the sealing groove (18), the size of the sealing limit groove (17) is larger than the size of the sealing groove (18), the sealing groove (18) is annular, the sealing groove (18) is located directly behind the sealing rubber tube (13), and the sealing rubber tube (13) is adapted to the sealing groove (18).

2. A large public building fire isolation structure according to claim 1, characterized in that: The lower end of the door frame (2) is provided with a mounting groove (19), the inner side of the mounting groove (19) is provided with an air pump (20), the output end of the air pump (20) is fixedly connected with an air guide pipe (21), the air guide pipe (21) is communicated with the ventilation pipe (12), the air guide pipe (21) is provided with an electromagnetic three-way valve (22), the electromagnetic three-way valve (22) is provided with an exhaust pipe, and the electromagnetic three-way valve (22) is externally connected with a controller.

3. A large public building fire isolation structure according to claim 1, characterized in that: A dry powder fire extinguisher (4) is fixedly connected to the upper inner wall of the door frame (2), and the dry powder fire extinguisher (4) is located on the front side of the fireproof isolation door (5).

4. A large public building fire isolation structure according to claim 2, characterized in that: A smoke detection sensor (10) is arranged above the door frame (2); the smoke detection sensor (10) is fixed on the fireproof isolation wall (1); and the smoke detection sensor (10) is electrically connected to a controller.

5. A large public building fire isolation structure according to claim 1, characterized in that: The fireproof isolation door (5) further comprises an inner support frame (15), the outer end of the inner support frame (15) being fixedly connected to the inner side wall of the protective outer frame (14), and a fireproof heat-insulating filler (16) being filled between the inner support frame (15) and the outer protective outer frame (14).

6. A large public building fire isolation structure according to claim 1, characterized in that: The fireproof isolation door (5) is provided with a fireproof glass window (6), a door closing detection magnet (8) is provided on the rear side of the fireproof isolation door (5), and a door closing detection alarm (9) is provided on the rear side wall of the door frame (2).