Smoke and fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, and in particular to a smoke-proof fireproof door, comprising a door frame, a door body hinged on the door frame, a sealing strip fixedly connected to the door frame, a connecting ear fixedly connected to the lower end of the door body, a connecting sleeve fixedly connected to the connecting ear, a column can be inserted into the connecting sleeve, the column is fixedly connected to a connecting plate, a sealing part is connected to the connecting plate through a connecting mechanism, a spring is fixedly connected between the connecting plate and the connecting ear, a second magnet is fixedly connected to the door frame, a first magnet is fixedly connected to the door body, the opposite surfaces of the first magnet and the second magnet are isotropic magnetic surfaces, and the first magnet is connected to the connecting plate through a connecting mechanism. The utility model is conducive to reducing the wear of the sealing part, preventing the sealing part from being damaged, and ensuring the smoke-proof effect.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a smoke-proof fireproof door. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with a certain degree of fire resistance, installed between fire compartments, evacuation stairwells, vertical shafts, etc. Since smoke will be generated during a fire, in order to make the fire door seal and isolate smoke when it is closed, a sealing strip is set between the fire door body and the door frame to seal and isolate smoke. When the lower end of the door body is sealed, it is easy to cause friction between the door sealing strip and the door frame when the door is opened, which makes the sealing strip easy to be damaged, and the smoke isolation effect is easily affected. Utility Model Content

[0003] The utility model aims to solve the problem in the prior art that when the door is opened, the door sealing strip is constantly rubbed against the door, which causes the sealing strip to be easily damaged and easily affects the smoke isolation effect, and thus proposes a smoke-proof fire door.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A smoke-proof and fire-proof door is designed, comprising a door frame, a door body is hinged on the door frame, a sealing strip is fixedly connected to the door frame, a connecting ear is fixedly connected to the lower end of the door body, a connecting sleeve is fixedly connected to the connecting ear, a column can be inserted into the connecting sleeve, the column is fixedly connected to a connecting plate, a sealing part is connected to the connecting plate through a connecting mechanism, a spring is fixedly connected between the connecting plate and the connecting ear, a second magnet is fixedly connected to the door frame, a first magnet is fixedly connected to the door body, the opposing surfaces of the first magnet and the second magnet are isotropic magnetic surfaces, and the first magnet is connected to the connecting plate through a connecting mechanism.

[0006] Preferably, the connecting mechanism includes a limit sleeve, which is fixedly connected to the door body, and a movable column passes through the limit sleeve, one end of the movable column is fixedly connected to the first magnet, and the other end is hinged to a hinge rod, and the hinge rod is hinged to the connecting plate.

[0007] Preferably, the connecting mechanism comprises screws, a plurality of threaded sleeves are fixedly connected to the sealing portion, and the screws penetrate the connecting plate and are threadably connected to the threaded sleeves.

[0008] Preferably, the sealing portion comprises a transverse sealing strip, both ends of which are fixedly connected with longitudinal sealing strips, the two longitudinal sealing strips abut against the door frame, and the transverse sealing strip abuts against the door body.

[0009] Preferably, a positioning sleeve is fixedly connected to the door body, a positioning rod is fixedly connected to the connecting plate, and the positioning rod can be inserted into the positioning sleeve.

[0010] Preferably, the opposing surfaces of the first magnet and the second magnet are equal in size.

[0011] Preferably, the sealing portion is a silicone sealing strip.

[0012] The utility model proposes a smoke-proof and fire-proof door, which has the beneficial effects that: the repulsive force between the first magnet and the second magnet will cause the sealing part to move downward, and the spring will be stretched, so that the sealing part seals the lower end of the door; when the door is opened, the first magnet and the second magnet move away from each other, and the repulsive force between them disappears, and under the action of the spring restoring force, the sealing part will be reset and separated from the abutment with the ground, which is beneficial to reduce the wear of the sealing part, prevent the sealing part from being damaged, and ensure the smoke-proof effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a smoke and fireproof door proposed by the utility model;

[0014] Figure 2 A three-dimensional diagram of a smoke-proof and fire-proof door (door body hidden) proposed by the utility model;

[0015] Figure 3 A three-dimensional diagram of a smoke and fireproof door proposed by the utility model;

[0016] Figure 4 A smoke-proof fire door proposed by the utility model Figure 1 A magnified view of part A;

[0017] Figure 5 A smoke-proof fire door proposed by the utility model Figure 1 Magnified view of part B.

[0018] In the figure: 1. door frame; 2. door body; 3. sealing part; 4. connecting plate; 5. positioning rod; 6. positioning sleeve; 7. moving column; 8. hinge rod; 9. first magnet; 10. limiting sleeve; 11. second magnet; 12. screw; 13. spring; 14. connecting sleeve; 15. column; 16. sealing strip. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Example 1: Reference Figure 1-5 A smoke-proof fire door comprises a door frame 1, a door body 2 is hinged on the door frame 1, a sealing strip 16 is fixedly connected to the door frame 1, the sealing strip 16 is in a U-shaped structure, and seals the two sides and the upper end of the door body 2 to prevent the entry of smoke, a connecting ear is fixedly connected to the lower end of the door body 2, a connecting sleeve 14 is fixedly connected to the connecting ear, a column 15 can be inserted in the connecting sleeve 14, a connecting plate 4 is fixedly connected to the column 15, a sealing portion 3 is connected to the connecting plate 4 through a connecting mechanism, a spring 13 is fixedly connected between the connecting plate 4 and the connecting ear, and the spring 13 is sleeved on the connecting sleeve 14 and the column 15, so as to prevent the spring 13 from being offset and ensure the fixing effect of both ends of the spring 13.

[0021] A second magnet 11 is fixedly connected to the door frame 1, and a first magnet 9 is fixedly connected to the door body 2. The opposing surfaces of the first magnet 9 and the second magnet 11 are isotropic magnetic surfaces. The first magnet 9 is connected to the connecting plate 4 through a connecting mechanism, and the sealing part 3 is used to seal the lower end of the door. When the door is closed, the first magnet 9 is opposite to the second magnet 11, and the opposing surfaces of the first magnet 9 and the second magnet 11 are equal in size. The repulsive force between the first magnet 9 and the second magnet 11 will cause the sealing part 3 to move downward, and the spring 13 will be stretched, so that the sealing part 3 seals the lower end of the door. When the door is opened, the first magnet 9 and the second magnet 11 move away from each other, and the repulsive force between them disappears. Under the action of the restoring force of the spring 13, the sealing part 3 will be reset and disengaged from the contact with the ground, which is beneficial to reduce the wear of the sealing part 3, prevent the sealing part 3 from being damaged, and ensure the smoke isolation effect.

[0022] The connecting mechanism includes a limit sleeve 10, which is fixedly connected to the door body 2. A movable column 7 passes through the limit sleeve 10. One end of the movable column 7 is fixedly connected to the first magnet 9 and the other end is hinged to a hinged rod 8. The hinged rod 8 is hinged to the connecting plate 4. When the first magnet 9 is opposite to the second magnet 11, the movable column 7 is pushed, so that the lower end of the hinged rod 8 moves downward, the connecting plate 4 moves downward, and the sealing part 3 is abutted against the ground.

[0023] The sealing part 3 includes a transverse sealing strip, both ends of which are fixedly connected with longitudinal sealing strips. The two longitudinal sealing strips abut against the door frame 1, and the transverse sealing strip abuts against the door body 2. The sealing part 3 is a silicone sealing strip, which has high high temperature resistance to prevent damage due to excessive temperature during fire. The two longitudinal sealing strips seal the abutment between the sealing part 3 and the door frame 1, and the transverse sealing strip seals the door body 2 and the ground.

[0024] When the door is opened, the first magnet 9 and the second magnet 11 move away from each other, and the repulsive force between them disappears. Under the action of the restoring force of the spring 13, the sealing part 3 is reset and separated from the contact with the ground. When the door is closed, the repulsive force between the first magnet 9 and the second magnet 11 causes the lower end of the hinge rod 8 to move downward, causing the connecting plate 4 to move downward and causing the sealing part 3 to contact the ground.

[0025] Embodiment 2: Although in Embodiment 1, the sealing part 3 is folded and moved after the door is opened, the sealing part 3 is still in contact with the ground when the door is opened. After a long period of use, the sealing part 3 will still cause a small amount of wear. Referring to Figures 1-3, as another preferred embodiment of the utility model, on the basis of Embodiment 1, the connecting mechanism includes screws 12, and a plurality of threaded sleeves are fixedly connected to the sealing part 3. The screws 12 pass through the connecting plate 4 and are threadedly connected to the threaded sleeves. The threaded sleeves and screws 12 are used to fix the sealing part 3 so that the sealing part 3 can be disassembled and replaced when it is necessary to replace the sealing part 3.

[0026] A positioning sleeve 6 is fixedly connected to the door body 2, and a positioning rod 5 is fixedly connected to the connecting plate 4. The positioning rod 5 can be inserted into the positioning sleeve 6. The positioning rod 5 and the positioning sleeve 6 are used to limit the connecting plate 4, so that the connecting plate 4 can only move up and down.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smoke and fireproof door, comprising a door frame (1), characterized in that: The door frame (1) is hinged with a door body (2), a sealing strip (16) is fixedly connected to the door frame (1), a connecting ear is fixedly connected to the lower end of the door body (2), a connecting sleeve (14) is fixedly connected to the connecting ear, a column (15) can be inserted into the connecting sleeve (14), the column (15) is fixedly connected to a connecting plate (4), a sealing portion (3) is connected to the connecting plate (4) through a connecting mechanism, a spring (13) is fixedly connected between the connecting plate (4) and the connecting ear, a second magnet (11) is fixedly connected to the door frame (1), and a first magnet (9) is fixedly connected to the door body (2), the opposing surfaces of the first magnet (9) and the second magnet (11) are isotropic magnetic surfaces, and the first magnet (9) is connected to the connecting plate (4) through a connecting mechanism.

2. A smoke and fire door according to claim 1, characterized in that: The connection mechanism comprises a limit sleeve (10), the limit sleeve (10) is fixedly connected to the door body (2), a movable column (7) passes through the limit sleeve (10), one end of the movable column (7) is fixedly connected to the first magnet (9), and the other end is hinged to a hinge rod (8), and the hinge rod (8) is hinged to the connecting plate (4).

3. A smoke and fireproof door according to claim 1, characterized in that: The connection mechanism comprises a screw (12), a plurality of threaded sleeves are fixedly connected to the sealing portion (3), and the screw (12) passes through the connection plate (4) and is threadably connected to the threaded sleeves.

4. A smoke and fireproof door according to claim 3, characterized in that: The sealing portion (3) comprises a transverse sealing strip, both ends of which are fixedly connected to longitudinal sealing strips, the two longitudinal sealing strips abut against the door frame (1), and the transverse sealing strip abuts against the door body (2).

5. A smoke and fireproof door according to any one of claims 1 to 4, characterized in that: A positioning sleeve (6) is fixedly connected to the door body (2), a positioning rod (5) is fixedly connected to the connecting plate (4), and the positioning rod (5) can be inserted into the positioning sleeve (6).

6. A smoke and fireproof door according to claim 3, characterized in that: The sizes of the opposing surfaces of the first magnet (9) and the second magnet (11) are equal.

7. The smoke and fireproof door according to claim 1, characterized in that: The sealing portion (3) is a silicone sealing strip.

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