Closed fire exit door

Abstract

The utility model discloses a closed fire exit door which comprises a door frame, one side of the door frame is rotatably connected with a first fireproof door, one side of the first fireproof door is movably connected with a second fireproof door, and one side of the second fireproof door is rotatably connected with the door frame. When a user leaves, a fireproof door closer on the fire exit door closes the fire exit door, a syn-position device effectively closes the first fireproof door and the second fireproof door in sequence, a second buffer pad on the first fireproof door effectively buffers huge force generated when the first fireproof door collides with the second fireproof door when the first fireproof door is closed, and the fire exit door is prevented from falling off at the moment when the fire exit door is closed. When a fire occurs, huge vibration and force can be generated and transmitted to the shock absorber through the fixing plate, the shock absorber can effectively reduce the generated vibration and force, the situation that the stability of the fire exit door is affected by too large vibration is prevented, and the situation that when a fire occurs, the effect of the fire exit door is reduced, and flames and smoke cannot be effectively blocked is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire doors, and in particular relates to a closed fire door. Background Art

[0002] Fire doors, also known as fire doors, refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fireproof partition with a certain degree of fire resistance, located between fire compartments, evacuation stairwells, vertical shafts, etc. It is specially used to isolate fire sources in housing buildings and plays a huge role in firefighting work. Once a fire occurs, people can get a chance to escape through fire doors. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire and smoke. They can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.

[0003] The existing partially enclosed fire doors are set in places such as stairways where there is not much traffic. They are usually in a closed state. When someone passes by, they can push the fire door open by holding the handle. However, opening and closing the fire door in this way for a long time will affect the function of the fire door. The vibration generated by opening and closing the door may cause the stability of the fire door to deteriorate and may cause deformation, resulting in the inability to effectively block flames and smoke in the event of a fire. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a closed fire door to solve the problem that the existing partially closed fire door proposed in the above background technology is arranged at the stairwell where there is not much traffic and is usually in a normally closed state. When someone passes by, the fire door can be pushed open by holding the handle. However, the long-term opening and closing of the fire door will affect the function of the fire door. The vibration generated by the opening and closing of the door may cause the stability of the fire door to deteriorate and may cause deformation, resulting in the problem that the flames and smoke cannot be effectively blocked to one side during a fire.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a closed fire door comprises a door frame, wherein a first fire door is rotatably connected to one side of the door frame, a second fire door is movably connected to one side of the first fire door, a door frame is rotatably connected to one side of the second fire door, a first rock wool board is fixedly connected to the inner sides of the first fire door and the second fire door respectively, a handle is fixedly connected to one side of the first fire door and the second fire door respectively, a first screw is threadedly connected to the opposite sides of the first fire door and the second fire door respectively, a plurality of the first screws are symmetrically arranged, a fireproof door closer is threadedly connected to the outer side of the first screw, two fireproof door closers are symmetrically arranged, a second screw is threadedly connected to the inner side of the fireproof door closer, a plurality of the second screws are symmetrically arranged, a door frame is threadedly connected to the outer side of the door frame, a shell is fixedly connected to one side of the shell, a shock absorber is fixedly connected to one side of the shell, a plurality of the shock absorbers are symmetrically arranged, a fixing plate is fixedly connected to one side of the shock absorber, and a sequencer is fixedly connected to the adjacent side of the door frame.

[0006] Preferably, a second rock wool board is fixedly connected to the inner side of the shell, and a fixing plate is fixedly connected to one side of the second rock wool board.

[0007] Preferably, a first buffer pad is fixedly connected to one side of the fixed plate, and a first fire door and a second fire door are movably connected to one side of the first buffer pad.

[0008] Preferably, a second buffer pad is fixedly connected to one side of the first fire door.

[0009] Preferably, a sealing strip is fixedly connected to one side of the second fire door.

[0010] Preferably, the outer surfaces of the first screw and the second screw are both provided with an anti-oxidation coating.

[0011] Preferably, the shell is a galvanized steel sheet.

[0012] Compared with the prior art, the utility model provides a closed fire door, which has the following beneficial effects:

[0013] 1. The utility model is provided with a shell and a shock absorber, one side of the shell is fixedly connected with a door frame, one side of the inner side of the shell is fixedly connected with a shock absorber, and one side of the shock absorber is fixedly connected with a fixing plate. When a user opens the fire door and passes by, the fire door closer on the fire door will close the fire door. When the fire door is closed, huge vibration and force will be transmitted to the shock absorber through the fixing plate. The shock absorber can effectively reduce the vibration and force generated, prevent excessive vibration from affecting the stability of the fire door, and avoid the fire door from reducing its function when a fire occurs, and failing to effectively block flames and smoke;

[0014] 2. The utility model provides a sealing strip, one side of which is fixedly connected to the second fire door, which effectively seals the gap between the first fire door and the second fire door to prevent smoke from passing through the gap to the other side during a fire;

[0015] 3. The utility model provides a second buffer pad, one side of which is fixedly connected to the first fire door, so as to effectively buffer the huge force generated when the first fire door collides with the second fire door when closing.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the axonometric structure of a closed fire door proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of a closed fire door proposed by the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 This is a side structural schematic diagram of a closed fire door proposed by the utility model;

[0022] In the figure: door frame 1, first fire door 2, second fire door 3, first rock wool board 4, handle 5, fire door closer 6, selector 7, shell 8, shock absorber 9, fixing plate 10, first buffer pad 11, second buffer pad 12, sealing strip 13, first screw 14, second screw 15, second rock wool board 16. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4The utility model provides a technical solution: a closed fire door, including a door frame 1, a first fire door 2 is rotatably connected to one side of the door frame 1, a second fire door 3 is movably connected to one side of the first fire door 2, a second fire door 3 is rotatably connected to the door frame 1 on one side, a first rock wool board 4 is fixedly connected to the inner sides of the first fire door 2 and the second fire door 3 respectively, a handle 5 is fixedly connected to one side of the first fire door 2 and the second fire door 3 respectively, a first screw 14 is threadedly connected to the first fire door 2 and the second fire door 3 on the opposite sides respectively, and the first screw 1 4 is symmetrically arranged, the outer side of the first screw 14 is threadedly connected with the fire door closer 6, and two fire door closers 6 are symmetrically arranged, the inner side of the fire door closer 6 is threadedly connected with the second screw 15, and the second screw 15 is symmetrically arranged, and the outer side of the second screw 15 is threadedly connected with the door frame 1, one side of the door frame 1 is fixedly connected with the shell 8, and one side of the shell 8 is fixedly connected with the shock absorber 9, and the shock absorber 9 is symmetrically arranged. A plurality of shock absorbers 9 are symmetrically arranged, one side of the shock absorber 9 is fixedly connected with a fixing plate 10, and the adjacent side of the door frame 1 is fixedly connected with a sequencer 7. When the user opens the fire door and passes by, the fire door closer 6 on the fire door will close the fire door. When the fire door is closed, huge vibration and force will be generated and transmitted to the shock absorber 9 through the fixing plate 10. The shock absorber 9 can effectively reduce the vibration and force generated, prevent excessive vibration from affecting the stability of the fire door, and avoid the fire door from reducing its function when a fire occurs, and failing to effectively block flames and smoke. The sequencer 7 effectively closes the first fire door 2 and the second fire door 3 in sequence.

[0025] In the present invention, preferably, a second rock wool board 16 is fixedly connected to the inner side of the shell 8, and a fixing plate 10 is fixedly connected to one side of the second rock wool board 16. Effective fireproofing and heat insulation can prevent the internal parts of the shell 8 from being burned.

[0026] In the present invention, preferably, the first buffer pad 11 is fixedly connected to one side of the fixed plate 10, and the first fire door 2 and the second fire door 3 are movably connected to one side of the first buffer pad 11, so as to effectively reduce the collision force between the first fire door 2 and the second fire door 3.

[0027] In the present invention, preferably, a second buffer pad 12 is fixedly connected to one side of the first fire door 2, which effectively buffers the huge force generated when the first fire door 2 collides with the second fire door 3 when closing.

[0028] In the present invention, preferably, a sealing strip 13 is fixedly connected to one side of the second fire door 3 to prevent smoke from passing through the gap to the other side during a fire.

[0029] In the present invention, preferably, the outer surfaces of the first screw 14 and the second screw 15 are both provided with an anti-oxidation coating, which effectively prevents the first screw 14 and the second screw 15 from being oxidized and rusted, thereby causing them to loosen and fall off.

[0030] In the present invention, preferably, the housing 8 is a galvanized steel plate, which is effective in preventing moisture, corrosion and rust, and can also effectively prevent fire.

[0031] The working principle and use process of the utility model are as follows: when in use, the user holds the handle 5 to open the first fire door 2 and the second fire door 3. When the user leaves, the fire door closer 6 on the fire door will close the fire door, and the sequencer 7 effectively makes the first fire door 2 and the second fire door 3 close in sequence. The second buffer pad 12 on the first fire door 2 effectively buffers the huge force generated when the first fire door 2 collides with the second fire door 3 when closing. At the moment the fire door is closed, huge vibration and force will be transmitted to the shock absorber 9 through the fixing plate 10. The shock absorber 9 can effectively reduce the vibration and force generated, prevent excessive vibration from affecting the stability of the fire door, and avoid the fire door from reducing its function when a fire occurs and failing to effectively block flames and smoke.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A closed fire door, comprising a door frame (1), characterized in that: The door frame (1) is rotatably connected to a first fire door (2) on one side, the first fire door (2) is movably connected to a second fire door (3) on one side, the second fire door (3) is rotatably connected to the door frame (1) on one side, the first fire door (2) and the second fire door (3) are respectively fixedly connected to first rock wool boards (4) on their inner sides, the first fire door (2) and the second fire door (3) are respectively fixedly connected to handles (5) on one side, the first fire door (2) and the second fire door (3) are respectively threadedly connected to first screws (14) on opposite sides, a plurality of the first screws (14) are symmetrically arranged, and the first screws (14) are respectively threadedly connected to the first fire door (2) and the second fire door (3). ) are threadedly connected to the outside of a fireproof door closer (6), two of which are symmetrically arranged, the inside of the fireproof door closer (6) is threadedly connected to a second screw (15), a plurality of which are symmetrically arranged, the outside of the second screw (15) is threadedly connected to a door frame (1), one side of the door frame (1) is fixedly connected to a housing (8), one side of the housing (8) is fixedly connected to a shock absorber (9), a plurality of which are symmetrically arranged, one side of the shock absorber (9) is fixedly connected to a fixing plate (10), and the adjacent side of the door frame (1) is fixedly connected to a sequencer (7).

2. A closed fire door according to claim 1, characterized in that: A second rock wool board (16) is fixedly connected to the inner side of the outer shell (8), and a fixing plate (10) is fixedly connected to one side of the second rock wool board (16).

3. A closed fire door according to claim 1, characterized in that: One side of the fixed plate (10) is fixedly connected to a first buffer pad (11), and one side of the first buffer pad (11) is movably connected to a first fire door (2) and a second fire door (3).

4. A closed fire door according to claim 1, characterized in that: A second buffer pad (12) is fixedly connected to one side of the first fireproof door (2).

5. A closed fire door according to claim 1, characterized in that: A sealing strip (13) is fixedly connected to one side of the second fireproof door (3).

6. A closed fire door according to claim 1, characterized in that: The outer surfaces of the first screw (14) and the second screw (15) are both provided with an anti-oxidation coating.

7. A closed fire door according to claim 1, characterized in that: The shell (8) is made of galvanized steel plate.

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