A normally open self-locking fire door

Abstract

The present application relates to a normally open self-locking fireproof door, and relates to the field of self-locking fireproof doors. It includes a fixed door seat, the fixed door seat includes a base plate and a vertical frame, the vertical frame is installed on one side of the base plate, and the vertical frame is fixedly connected to the base plate, the upper end surface of the base plate is installed with a movable door seat, the movable door seat is slidably connected to the base plate, and the lower end surface of the base plate is provided with an electric cylinder for driving the movable door seat to move, and a multi-head partition door is installed in the movable door seat. The present application designs the fireproof door into a structure in which a fixed door seat and a movable door seat cooperate, and the movable door seat can be flexibly moved under the control of the electric cylinder, so that when it is needed to be normally open, the movable door seat can be stored in the wall, and when fire protection is needed, the movable door seat can be slid out, and the multi-head partition door on the movable door seat can be used to cooperate with the fixed door seat for sealing and shielding.

Description

Technical Field

[0001] The present application relates to the technical field of self-locking fire doors, and in particular to a normally open self-locking fire door. Background Art

[0002] A normally open fire door refers to a door that can meet the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. It is installed in fire compartments, with evacuation stairwells as the main installation point. Normally open fire doors also have the function of preventing the spread of fire and smoke. Under normal circumstances, they are in an open state and are closed by an induction device when a fire occurs.

[0003] The existing Chinese patent with announcement number CN201981966U discloses a folding normally open fire door, which includes a door frame and a door panel located in the door frame, the door panel includes a first leaf panel and a second leaf panel that can be folded, and the first leaf panel is rotatably connected to the door frame; the fire door includes a control circuit, a door closer, a slider, a door closing spring and a card door corner lock; the slider slides along the cross beam of the door frame, and at the same time, the slider is connected to the upper edge of the second leaf panel, and the slider moves with the second leaf panel when it moves; the door closing spring is fixedly connected to the door frame, and is used to apply force to the slider to the open position of the second leaf panel when closing the door, and the card door corner lock is set on the slider.

[0004] With respect to the above-mentioned related technologies, it is found that the existing self-locking fire doors can be self-locked and closed in time once encountering a fire, but the existing rolling shutter and flip fire doors, once closed, will not only isolate the fire but also block the passage of people. If someone fails to pass through this door in time, the escape opportunity of the escaping personnel will be cut off. Utility Model Content

[0005] In order to achieve the purpose of automatically closing the fire door after a fire but allowing people to pass through, the present application provides a normally open self-locking fire door.

[0006] The normally open self-locking fire door provided in this application adopts the following technical solution:

[0007] A normally open self-locking fire door comprises a fixed door seat, the fixed door seat comprises a base plate and a vertical frame, the vertical frame is installed on one side of the base plate and fixedly connected to the base plate, a movable door seat is installed on the upper end surface of the base plate, the movable door seat is slidably connected to the base plate, and an electric cylinder for driving the movable door seat to move is provided on the lower end surface of the base plate, a multi-head partition door is installed in the movable door seat, the multi-head partition door is rotatably connected to the movable door seat, a matching cover that seals with the multi-head partition door is installed on the side of the vertical frame facing the multi-head partition door, the matching cover is fixedly connected to the vertical frame, and passage openings are opened on both sides of the matching cover.

[0008] By adopting the above technical scheme, the structure of the fixed door seat is set to ensure that the vertical frame and the movable door seat can be installed through the base plate. During construction and installation, the vertical frame is connected to the wall on one side, and the movable door seat can be slidably installed on the base plate, and the opening and closing are controlled by the electric cylinder. At the same time, the matching cover is fixedly installed on the vertical frame. In this way, when there is no fire, the movable door seat can be in a normally open state. When emergency closure is required, the movable door seat can drive the multi-head partition door and the matching cover to cooperate with each other to achieve the purpose of rapid partition. When people want to pass through after closing, they can enter the multi-head partition door through the passage door opening on one side of the matching cover, and then rotate the multi-head partition door to pass through the passage door opening on the other side of the matching cover.

[0009] Optionally, a guide groove for the movable door seat to slide is provided on the bottom plate, and an electric cylinder seat for installing the electric cylinder is provided at the lower end of the bottom plate, and the electric cylinder seat is fixedly connected to the bottom plate.

[0010] By adopting the above technical solution, a guide groove is opened on the bottom plate, so that the movable door seat can be flexibly slid and adjusted to use position, so that the movable door seat can be stored in the wall when not in use, and can be quickly slid out when needed. By arranging an electric cylinder seat at the lower end of the bottom plate, it is convenient to stably install the electric cylinder through the electric cylinder seat, and the electric cylinder can stably adjust the use position of the movable door seat.

[0011] Optionally, the movable door seat includes a thermal insulation shell and a ball ring shell, the ball ring shell is arranged on one side of the thermal insulation shell, and the ball ring shell is fixedly connected to the thermal insulation shell.

[0012] By adopting the above technical solution, the structure of the movable door seat is set to ensure that the ball ring shell is fixedly installed on the insulation shell, so that it is convenient to rotate and install the multi-head partition door through the ball ring shell.

[0013] Optionally, the thermal insulation shell includes an outer shell, an insulation board and a fire door core, the insulation board is fixedly installed in the middle of the outer shell, and the fire door core is arranged on both sides of the insulation board.

[0014] By adopting the above technical solution, the structure of the insulation shell is set to ensure that the insulation board and the fire door core are set in the outer shell, thereby increasing the overall fire prevention and heat insulation effect of the insulation shell.

[0015] Optionally, a limiting slide matched with the guide groove is provided at the lower end of the outer shell, and the limiting slide is fixedly connected to the outer shell.

[0016] By adopting the above technical solution, by fixing the limiting slide plate on the lower end surface of the outer shell, it can be ensured that the outer shell can be stably slid along the guide groove to adjust the position when in use.

[0017] Optionally, the spherical ring shell includes an arc-shaped middle plate and an annular frame, the annular frame is arranged at the upper and lower ends of the arc-shaped middle plate, and the annular frame and the arc-shaped middle plate are integrally formed.

[0018] By adopting the above technical solution, the annular frame is arranged on the arc-shaped middle plate through the structural setting of the ball ring shell, and then the multi-head partition door can be rotatably installed through the annular frames at the upper and lower ends.

[0019] Optionally, the multi-head partition door includes a turntable frame and a flame-retardant partition, the flame-retardant partition is evenly arranged in the turntable frame along the circumferential direction, and the flame-retardant partition is fixedly connected to the turntable frame.

[0020] By adopting the above technical scheme, the structure of the multi-head partition door is set to ensure that a plurality of flame-retardant partitions can be installed inside the turntable frame, so that when in use, a plurality of flame-retardant partitions can cooperate with the arc-shaped middle plate and the matching cover to achieve sealing and blocking use, and the gap between two adjacent multi-head partition doors can be used to cooperate with the passage doorway to achieve the purpose of personnel passage.

[0021] Optionally, the turntable frame includes a central axis rod and a disc body, wherein the disc body is fixedly mounted on both ends of the central axis rod, and the disc body is rotatably mounted in the annular frame.

[0022] By adopting the above technical solution, the structure of the turntable frame is set to ensure that the central axis rod can be rotatably installed in the annular frame through the disc bodies at the upper and lower ends, and the turntable frame can be stably rotated and adjusted during easy use.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application designs the fire door into a structure in which a fixed door seat and a movable door seat cooperate, and the movable door seat can be flexibly moved under the control of an electric cylinder, so that when it needs to be normally open, the movable door seat can be stored in the wall, and when fire protection is required, the movable door seat can be slid out, and the multi-head partition door on the movable door seat can cooperate with the fixed door seat for sealing and shielding, and when closed, the multi-head partition door can also be used to cooperate with the passage door opening on the cover to allow people to pass through, so that when in use, it can not only achieve fire partition, but also ensure the normal escape of people, and it is safer to use;

[0025] 2. The present application designs the movable door seat into a structure in which an insulation shell and a ball ring shell cooperate. When it is easy to use, the insulation shell can be used for rapid blocking, and an insulation board and a fire door core are arranged in the insulation shell to increase the fireproof and heat-insulating effect. At the same time, the ball ring shell is used to facilitate the stable rotation and installation of the multi-head partition door, ensuring that when the fire door is closed, the multi-head partition door can cooperate with the arc-shaped middle plate and the matching cover to achieve a good partition effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a three-dimensional diagram of the fixed door seat and the matching cover in the embodiment of the present application.

[0028] Figure 3 It is a three-dimensional diagram of the movable door seat in the embodiment of the present application.

[0029] Figure 4 yes Figure 3 Front view of the device shown.

[0030] Figure 5 It is a three-dimensional diagram of the multi-head partition door in the embodiment of the present application.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Fixed door seat; 11. Bottom plate; 111. Guide groove; 112. Electric cylinder seat; 12. Vertical frame; 2. Movable door seat; 21. Insulation shell; 211. Outer shell; 212. Insulation board; 213. Fire door core; 214. Limiting slide plate; 22. Ball ring shell; 221. Arc-shaped middle plate; 222. Ring frame; 3. Electric cylinder; 4. Multi-head partition door; 41. Turntable frame; 411. Central axis rod; 412. Disc body; 42. Flame-retardant partition; 5. Matching cover; 51. Passageway. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] The present application embodiment discloses a normally open self-locking fire door. Figure 1 , Figure 2 and Figure 3As shown, a normally open self-locking fire door includes a fixed door seat 1, the fixed door seat 1 includes a base plate 11 and a vertical frame 12, the vertical frame 12 is installed on one side of the base plate 11, and the vertical frame 12 is fixedly connected to the base plate 11, a movable door seat 2 is installed on the upper end surface of the base plate 11, the movable door seat 2 is slidably connected to the base plate 11, and the lower end surface of the base plate 11 is provided with an electric cylinder 3 for driving the movable door seat 2 to move, a multi-head partition door 4 is installed in the movable door seat 2, the multi-head partition door 4 is rotatably connected to the movable door seat 2, a matching cover 5 that is sealed with the multi-head partition door 4 is installed on the side of the vertical frame 12 facing the multi-head partition door 4, the matching cover 5 is fixedly connected to the vertical frame 12, and passage openings 51 are opened on both sides of the matching cover 5. The structure of the fixed door seat 1 is set to ensure that the vertical frame 12 and the movable door seat 2 can be installed through the base plate 11. During construction and installation, the vertical frame 12 is connected to the wall on one side, and the movable door seat 2 can be slidably installed on the base plate 11, and the opening and closing are controlled by the electric cylinder 3. At the same time, the matching cover 5 is fixedly installed on the vertical frame 12. In this way, when there is no fire, the movable door seat 2 can be in a normally open state. When emergency closure is required, the movable door seat 2 can drive the multi-head partition door 4 and the matching cover 5 to cooperate with each other to achieve the purpose of rapid isolation. When people want to pass through after closing, they can enter the multi-head partition door 4 through the passage door opening 51 on one side of the matching cover 5, and then rotate the multi-head partition door 4 to pass through the passage door opening 51 on the other side of the matching cover 5.

[0034] Reference Figure 2 As shown, the bottom plate 11 is provided with a guide groove 111 for the movable door seat 2 to slide, and the lower end of the bottom plate 11 is provided with an electric cylinder seat 112 for installing the electric cylinder 3, and the electric cylinder seat 112 is fixedly connected to the bottom plate 11. By providing the guide groove 111 on the bottom plate 11, the movable door seat 2 can be flexibly adjusted to slide and use, so that the movable door seat 2 can be stored in the wall when not in use, and can be quickly slid out when needed. By providing the electric cylinder seat 112 at the lower end of the bottom plate 11, it is convenient to stably install the electric cylinder 3 through the electric cylinder seat 112, so that the electric cylinder 3 can stably adjust the use position of the movable door seat 2.

[0035] Reference Figure 3 and Figure 4As shown, the movable door seat 2 includes a thermal insulation shell 21 and a ball ring shell 22. The ball ring shell 22 is arranged on one side of the thermal insulation shell 21, and the ball ring shell 22 is fixedly connected to the thermal insulation shell 21. The structural setting of the movable door seat 2 ensures that the ball ring shell 22 is fixedly installed on the thermal insulation shell 21, so that it is convenient to rotate and install the multi-head partition door 4 through the ball ring shell 22. The thermal insulation shell 21 includes an outer shell 211, an insulation board 212 and a fire door core 213. The insulation board 212 is fixedly installed in the middle of the outer shell 211, and the fire door core 213 is arranged on both sides of the insulation board 212. The structural setting of the thermal insulation shell 21 ensures that the insulation board 212 and the fire door core 213 are arranged in the outer shell 211, thereby increasing the overall fire prevention and heat insulation effect of the thermal insulation shell 21. The lower end of the outer shell 211 is provided with a limiting slide 214 that matches the guide groove 111, and the limiting slide 214 is fixedly connected to the outer shell 211. By fixing the limiting slide plate 214 on the lower end surface of the outer shell 211, it can be ensured that the outer shell 211 can be stably slid and adjusted along the guide groove 111 when in use. The ball ring shell 22 includes an arc-shaped middle plate 221 and an annular frame 222. The annular frame 222 is arranged at the upper and lower ends of the arc-shaped middle plate 221, and the annular frame 222 is integrally formed with the arc-shaped middle plate 221. The structural setting of the ball ring shell 22 ensures that the annular frame 222 is arranged on the arc-shaped middle plate 221, and then the multi-head partition door 4 can be rotatably installed through the annular frames 222 at the upper and lower ends.

[0036] Reference Figure 5 As shown, the multi-head partition door 4 includes a turntable frame 41 and a flame-retardant partition 42. The flame-retardant partition 42 is evenly arranged in the turntable frame 41 along the circumferential direction, and the flame-retardant partition 42 is fixedly connected to the turntable frame 41. The structural setting of the multi-head partition door 4 ensures that a plurality of flame-retardant partitions 42 are installed inside the turntable frame 41, so that when in use, a plurality of flame-retardant partitions 42 can cooperate with the arc-shaped middle plate 221 and the matching cover 5 to achieve sealing and blocking use, and the gap between two adjacent multi-head partition doors 4 can cooperate with the passage door 51 to achieve the purpose of personnel passage. The turntable frame 41 includes a central axis rod 411 and a disc body 412. The disc body 412 is fixedly installed at both ends of the central axis rod 411, and the disc body 412 is rotatably installed in the annular frame 222. The structure of the turntable frame 41 ensures that the central axis rod 411 can be rotatably installed in the annular frame 222 through the disc bodies 412 at the upper and lower ends, so that the turntable frame 41 can be stably rotated and adjusted during easy use.

[0037] The implementation principle of a normally open self-locking fire door in an embodiment of the present application is as follows: when the normally open state is required, the movable door seat 2 and the multi-head partition door 4 are stored in the wall as a whole through the electric cylinder 3, so that the fire door as a whole can be kept in the normally open state. Once an emergency occurs, the electric cylinder 3 can push the movable door seat 2 to close quickly, and the movable door seat 2 drives the multi-head partition door 4 to move quickly to a position in contact with the matching cover 5, and fit the flame retardant partition 42 of the multi-head partition door 4 on the inner side of the matching cover 5 to achieve the purpose of rapid blocking. When people need to pass through after the fire door is closed, they can enter the multi-head partition door 4 through the door opening 51 on one side, and then rotate the multi-head partition door 4 to pass through the door opening 51 on the other side.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A normally open self-locking fire door, comprising a fixed door seat (1), characterized in that: The fixed door seat (1) comprises a bottom plate (11) and a vertical frame (12), wherein the vertical frame (12) is mounted on one side of the bottom plate (11) and is fixedly connected to the bottom plate (11), a movable door seat (2) is mounted on the upper end surface of the bottom plate (11), the movable door seat (2) is slidably connected to the bottom plate (11), and an electric cylinder (3) for driving the movable door seat (2) to move is disposed on the lower end surface of the bottom plate (11), a multi-head partition door (4) is mounted in the movable door seat (2), the multi-head partition door (4) is rotatably connected to the movable door seat (2), a matching cover (5) for sealingly matching with the multi-head partition door (4) is mounted on the side of the vertical frame (12) facing the multi-head partition door (4), the matching cover (5) is fixedly connected to the vertical frame (12), and passage openings (51) are provided on both sides of the matching cover (5).

2. A normally open self-locking fire door according to claim 1, characterized in that: The bottom plate (11) is provided with a guide groove (111) for the movable door seat (2) to slide, and the lower end of the bottom plate (11) is provided with an electric cylinder seat (112) for mounting the electric cylinder (3), and the electric cylinder seat (112) is fixedly connected to the bottom plate (11).

3. A normally open self-locking fire door according to claim 2, characterized in that: The movable door seat (2) comprises a thermal insulation shell (21) and a ball ring shell (22); the ball ring shell (22) is arranged on one side of the thermal insulation shell (21), and the ball ring shell (22) is fixedly connected to the thermal insulation shell (21).

4. A normally open self-locking fire door according to claim 3, characterized in that: The thermal insulation shell (21) comprises an outer shell (211), a thermal insulation board (212) and a fire door core (213); the thermal insulation board (212) is fixedly mounted in the middle of the outer shell (211), and the fire door core (213) is arranged on both sides of the thermal insulation board (212).

5. A normally open self-locking fire door according to claim 4, characterized in that: A limiting slide plate (214) matching the guide groove (111) is provided at the lower end of the outer shell (211); the limiting slide plate (214) is fixedly connected to the outer shell (211).

6. A normally open self-locking fire door according to claim 5, characterized in that: The spherical ring shell (22) comprises an arc-shaped middle plate (221) and an annular frame (222), wherein the annular frame (222) is arranged at the upper and lower ends of the arc-shaped middle plate (221), and the annular frame (222) and the arc-shaped middle plate (221) are integrally formed.

7. A normally open self-locking fire door according to claim 6, characterized in that: The multi-head partition door (4) comprises a turntable frame (41) and a flame-retardant partition (42); the flame-retardant partition (42) is evenly arranged in the turntable frame (41) along the circumferential direction, and the flame-retardant partition (42) is fixedly connected to the turntable frame (41).

8. A normally open self-locking fire door according to claim 7, characterized in that: The turntable frame (41) comprises a central axis rod (411) and a circular disc body (412); the circular disc body (412) is fixedly mounted on both ends of the central axis rod (411), and the circular disc body (412) is rotatably mounted in the annular frame (222).

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