High-strength fireproof door

Abstract

The invention relates to a high-strength fireproof door and belongs to the technical field of fireproof doors, the high-strength fireproof door comprises a door frame and a door leaf, the door frame is used for being embedded in a mounting hole of a wall, the door leaf is hinged in the door frame, a mounting plate is fixedly arranged on the inner side of the door frame, a mounting hole is formed in the mounting plate, and a mounting shaft is rotatably arranged on the inner side of the door frame; the installation shaft is arranged in the vertical direction, the installation shaft is sleeved with a connecting section, the connecting section penetrates through the installation hole to be connected with the door leaf, and the connecting section is in an arc shape and is separated from the side edge of the installation hole. The fireproof door has the effect of improving the fireproof performance of the fireproof door.

Description

Technical Field

[0001] The present application relates to the technical field of fireproof doors, and in particular to a high-strength 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 and are generally installed between fire compartments, evacuation stairwells and vertical shafts. At present, fire doors improve their fire resistance by setting insulation and fire-resistant layers inside the door body and installing fireproof sealing layers on the outside of the door body.

[0003] According to the opening status, they are divided into normally closed fire doors and normally open fire doors. Normally closed fire doors are generally composed of fire door leaves, door frames, door closers, sealing strips, etc. Double or multiple normally closed fire doors are also equipped with sequencers. Normally closed fire doors usually do not require electrical professionals to provide automatic control design, but there are some special cases such as: normally closed fire doors on evacuation passages. When some large construction parties have management requirements such as anti-theft, they should be designed by electrical professionals to reduce safety hazards as comprehensively as possible. For normally open fire doors, in addition to all the accessories of normally closed fire doors, fire door release switches must be added, and automatic control designs must be provided by electrical professionals. They are usually used in evacuation passages with more people and logistics.

[0004] However, the hinged ends of the door leaf and the door frame are usually exposed. After the door leaf is closed to the door frame, the hinged ends can be seen at the back of the door leaf, causing the hinged ends to be easily damaged by fire and the like, thus making the fire door difficult to open. Summary of the invention

[0005] To facilitate the opening of a door leaf, the present application provides a high-strength fireproof door.

[0006] The high-strength fireproof door provided in this application adopts the following technical solution: A high-strength fireproof door comprises a door frame and a door leaf, wherein the door frame is used to be embedded in an installation hole in a wall, and the door leaf is hinged in the door frame. A mounting plate is fixedly arranged on the inner side of the door frame, and a mounting hole is opened on the mounting plate. A mounting shaft is rotatably arranged on the inner side of the door frame, and the mounting shaft is arranged vertically. A connecting section is sleeved on the mounting shaft, and the connecting section passes through the mounting hole to be connected to the door leaf. The connecting section is arc-shaped and is separated from the side of the mounting hole.

[0007] Optionally, a mounting sleeve and a positioning plate are fixedly provided on the door frame, the mounting shaft is sleeved in the mounting sleeve, the positioning plate is fixedly provided on the mounting sleeve, two mounting sleeves and two positioning plates are provided, the connecting section is located between the two positioning plates, and is supported on the positioning plate. Optionally, a mounting notch is provided on a side of the mounting plate, the mounting notch is connected to the mounting hole, and the mounting notch is used for the positioning plate to pass through the mounting plate.

[0008] Optionally, the door leaf includes a core panel, a fireproof board and a plywood, two fireproof boards are provided and are respectively located on both sides of the core panel, two plywood boards are provided and are respectively located on the outside of the fireproof boards on both sides, the core panel is a fireproof core panel, the fireproof board is a magnesium non-combustible fireproof board, and the plywood is a flame-retardant plywood.

[0009] Optionally, an installation cavity is provided in the core board, the cross section of the installation cavity is consistent with the cross section of the core board and the area is smaller than the area of ​​the core board, and a water injection hole penetrating the core board is provided at the top of the installation cavity; a water outlet pipe is provided in the door frame, the water outlet pipe and the water injection pipe are located on the same straight line, the water outlet pipe is connected to the indoor water system, and the indoor water system injects water into the core board through the water outlet pipe Optionally, a butterfly valve is provided on the water outlet side of the water outlet pipe, and the butterfly valve is a rod-type valve. A rotating part for rotating the valve stem to open the butterfly valve to pass water is provided in the door frame.

[0010] Optionally, the water outlet of the water outlet pipe is closed by a wax seal, and the wax seal section is located between the butterfly valve and the outlet of the water outlet pipe.

[0011] Optionally, the rotating member includes a push rod arranged in the door frame, the push rod is a telescopic rod, one end of the push rod is hinged in the door frame, and the other end is hinged on the valve stem. The rotating member also includes an airbag arranged in the push rod, and the airbag is injected with expansion gas. The expansion gas is used to expand the airbag along the length direction of the push rod after the ambient temperature rises, thereby pushing the push rod to extend and driving the valve stem to rotate.

[0012] Optionally, the water outlet pipe includes a sleeve connected to the indoor water system and a sliding pipe slidably sleeved in the sleeve, the sliding pipe is used to be inserted into the water injection hole, the butterfly valve is arranged on the sleeve and is used to open and close the sleeve, the initial position of the sliding pipe is located in the sleeve and is separated from the door leaf, and the wax sealing section is located at the end and inside of the sliding pipe, which is used to fix the sliding pipe in the sleeve and to seal the sliding pipe.

[0013] Optionally, a support frame is provided inside the core plate and inside the installation cavity, and the support frame is used to support the inner cavity of the core plate.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. After the door leaf is closed, the door leaf drives the connecting section to pass through the installation hole, so that the door leaf enters the door frame. After the door leaf enters the door frame, the installation axis is hidden between the door frame and the door leaf, so that the installation axis between the door leaf and the door frame cannot be observed visually, which improves the appearance of the door body and improves the compactness of the door body; at the same time, the installation axis is hidden between the door frame and the door leaf, which reduces the influence of the installation axis due to fire and the like, and facilitates the opening of the door leaf, thereby facilitating escape from the fire; and under the blocking effect of the installation plate, after the door leaf is opened to the door frame, the installation axis is hidden on the back of the installation plate, which reduces the influence of environmental factors on the installation axis and facilitates the opening of the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a high-strength fireproof door according to an embodiment of the present application; Figure 2 is a transverse cross-sectional view of a high-strength fireproof door according to an embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 This is a schematic diagram of the composition of a door leaf in a high-strength fireproof door according to an embodiment of the present application; Figure 5 It is a vertical cross-sectional view of a high-strength fireproof door according to an embodiment of the present application; Figure 6 yes Figure 5 Schematic diagram of the enlarged portion B.

[0016] Explanation of the accompanying drawings: 1. Door frame; 2. Door leaf; 3. Mounting plate; 4. Mounting hole; 5. Mounting shaft; 6. Mounting sleeve; 7. Core board; 8. Fireproof board; 9. Plywood; 10. Mounting cavity; 11. Water injection hole; 12. Water outlet pipe; 121. Sleeve; 122. Sliding pipe; 13. Butterfly valve; 14. Valve stem; 15. Push rod; 16. Connecting section. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-6 This application is described in further detail.

[0018] The present application embodiment discloses a high-strength fireproof door. Figure 1 , Figure 2 and Figure 3The high-strength fire door includes a door frame 1 and a door leaf 2. The door frame 1 is used to be embedded in the installation hole of the wall. The door leaf 2 is hinged in the door frame 1. A mounting plate 3 is fixedly arranged on the inner side of the door frame 1. A mounting hole 4 is opened on the mounting plate 3. A mounting shaft 5 is rotatably arranged on the inner side of the door frame 1. The mounting shaft 5 is arranged vertically. A plurality of mounting shafts 5 are arranged and are arranged vertically. A connecting section 16 is sleeved on the mounting shaft 5. The connecting section 16 passes through the mounting hole 4 and is connected to the door leaf 2. The connecting section 16 is arc-shaped and is separated from the side of the mounting hole 4.

[0019] After the door leaf 2 is closed, the door leaf 2 drives the connecting section 16 to pass through the mounting hole 4, so that the door leaf 2 enters the door frame 1. After the door leaf 2 enters the door frame 1, the mounting shaft 5 is hidden between the door frame 1 and the door leaf 2, so that the mounting shaft 5 of the door leaf 2 and the door frame 1 cannot be observed visually, thereby improving the aesthetics of the door body and improving the compactness of the door body; at the same time, the mounting shaft 5 is hidden between the door frame 1 and the door leaf 2, reducing the influence of the mounting shaft 5 due to fire and the like, and facilitating the opening of the door leaf 2, thereby facilitating escape from the fire; and under the blocking effect of the mounting plate 3, after the door leaf 2 is opened to the door frame 1, the mounting shaft 5 is hidden on the back of the mounting plate 3, reducing the influence of environmental factors on the mounting shaft 5, and facilitating the opening of the door leaf 2.

[0020] Reference Figure 2 and Figure 3 In the embodiment of the present application, a mounting sleeve 6 and a positioning plate are fixedly provided on the door frame 1, the mounting sleeve 6 is vertically arranged, the mounting shaft 5 is sleeved in the mounting sleeve 6, the positioning plate is fixedly arranged on the mounting sleeve 6, and two mounting sleeves 6 and two positioning plates are each provided, and the connecting section 16 is located between the two positioning plates and is supported on the positioning plate; under the action of the mounting sleeve 6, the installation and fixation of the mounting shaft 5 are facilitated; under the action of the positioning plate, the connecting section 16 is supported, and the position of the door leaf 2 is fixed; further, under the action of the positioning plate, the connecting section 16 and the mounting shaft 5 are conveniently sleeved in the mounting shaft 5.

[0021] Reference Figure 2 and Figure 3 In order to reduce the influence of the positioning plate on the closing of the door leaf 2, a mounting notch is provided on the side of the mounting plate 3, and the mounting notch is connected to the mounting hole 4, and the mounting notch is used for the positioning plate to pass through the mounting plate 3.

[0022] Reference Figure 4 In the implementation of this application, the door leaf 2 includes a core board 7, a fireproof board 8 and a plywood 9. Two fireproof boards 8 are provided and are respectively located on both sides of the core board 7. Two plywood boards 9 are provided and are respectively located on the outside of the fireproof boards 8 on both sides. The core board 7 is a fireproof core board, the fireproof board 8 is a magnesium non-combustible fireproof board, and the plywood 9 is a flame-retardant plywood. The door leaf 2 is made of fireproof materials glued together, which improves the fireproof performance of the door leaf 2.

[0023] Reference Figure 5 and Figure 6 In order to further improve the fireproof performance of the door leaf 2, an installation cavity 10 is opened in the core board 7. The cross section of the installation cavity 10 is consistent with the cross section of the core board 7 and the area is smaller than the area of ​​the core board 7. A water injection hole 11 that penetrates the core board 7 is opened at the top of the installation cavity 10; a water outlet pipe 12 is arranged in the door frame 1, and the water outlet pipe 12 and the water injection pipe are located on the same straight line. The water outlet pipe 12 is connected with the indoor water system, and the indoor water system injects water into the core board 7 through the water outlet pipe 12; when a fire occurs indoors, the indoor water system transports the water source to the water injection hole 11 through the water outlet pipe 12, and then injects it into the installation cavity 10 through the water injection hole 11, and cools the door leaf 2, thereby improving the fireproof performance of the door leaf 2; at the same time, when the fire is out of control, the fireproof board 8 and the plywood 9 are damaged, the thickness of the core board 7 is gradually reduced, and the water source in the installation cavity 10 flows out from the core board 7, and the fire near the door leaf 2 is controlled.

[0024] Reference Figure 5 and Figure 6 In the embodiment of the present application, a butterfly valve 13 is provided on the water outlet side of the water outlet pipe 12. The butterfly valve 13 is a rod-type valve. A rotating part for rotating the valve stem 14 to open the butterfly valve 13 to pass water is provided in the door frame 1. When a fire occurs, the rotating part acts on the valve stem 14, and the valve stem 14 rotates to drive the internal plate body to rotate, thereby opening the butterfly valve 13. The operation is simple and convenient.

[0025] Reference Figure 5 and Figure 6 Furthermore, in order to improve the sealing effect of the water outlet pipe 12 and reduce the possibility of water dripping from the water outlet pipe 12, in the embodiment of the present application, the water outlet of the water outlet pipe 12 is closed by a wax seal, and the wax seal section is located between the butterfly valve 13 and the outlet of the water outlet pipe 12; the water outlet buckle of the water outlet pipe 12 is sealed by the wax seal, and the possibility of water dripping through the water outlet pipe 12 is reduced, thereby improving the sealing effect of the water outlet pipe 12; at the same time, when a fire occurs and the indoor temperature rises, the temperature of the wax seal gradually increases, causing the wax seal to transform from a solid state to a molten state and then to a liquid state, thereby opening the water outlet of the water outlet pipe 12.

[0026] Reference Figure 5 and Figure 6In order to facilitate the water outlet pipe 12 to inject water into the core board 7 through the water injection hole 11, the water outlet pipe 12 includes a sleeve 121 connected to the indoor water system and a slide pipe 122 slidably sleeved in the sleeve 121, the slide pipe 122 is used to be inserted into the water injection hole 11, the butterfly valve 13 is arranged on the sleeve 121 and is used to open and close the sleeve 121, the initial position of the slide pipe 122 is located in the sleeve 121 and is in a separated state from the door leaf 2, the wax sealing section is located at the end and inside of the slide pipe 122, and is used to fix the slide pipe 122 in the sleeve 121 and to seal the slide pipe 122. Initially, the sliding tube 122 is fixed in the sleeve 121 by a wax seal. At the same time, the through hole of the sleeve 121 is sealed, so as to improve the sealing performance of the water outlet pipe 12 and separate the sliding tube 122 from the water injection hole 11, thereby facilitating the opening of the door leaf 2. When a fire occurs, the wax seal melts, and the force of the wax seal is less than the gravity of the sliding tube 122. The sliding tube 122 slides toward the door leaf 2 and is inserted into the water injection hole 11, thereby facilitating the injection of water into the door leaf 2.

[0027] Reference Figure 5 and Figure 6 In the embodiment of the present application, the rotating member includes a push rod 15 arranged in the door frame 1. The push rod 15 is a telescopic rod. One end of the telescopic rod is hinged in the door frame 1, and the other end is hinged on the valve stem 14. In the embodiment of the present application, the rotation axis of the push rod 15 is perpendicular to the length direction of the water outlet pipe 12, and the initial length of the push rod 15 is parallel to the length direction of the water outlet pipe 12. The rotating member also includes an airbag arranged in the push rod 15. The airbag is injected with an expansion gas (such as hydrogen, etc.). The expansion gas is used to expand the airbag along the length direction of the push rod 15 after the ambient temperature rises, so as to push the push rod 15 to extend and drive the valve stem 14 to rotate; when the indoor temperature rises significantly, the gas volume in the airbag increases. After the gas volume increases, the airbag expands and drives the push rod 15 to extend. The extension of the push rod 15 drives the valve stem 14 to rotate and open the water outlet pipe 12. The operation is simple and convenient.

[0028] Reference Figure 5 and Figure 6 In order to improve the strength of the door leaf 2, a supporting frame is provided inside the core board 7 and inside the installation cavity 10. The supporting frame is used to support the inner cavity of the core board 7. The supporting frame includes a plurality of horizontal bars and vertical bars. The ends of the horizontal bars and the vertical bars abut against the inner wall of the installation cavity 10, thereby improving the strength of the core board 7 and thus improving the strength of the door leaf 2.

[0029] The implementation principle of a high-strength fire door in the embodiment of the present application is: After the door leaf 2 is closed, the door leaf 2 drives the connecting section 16 to pass through the mounting hole 4, so that the door leaf 2 enters the door frame 1. After the door leaf 2 enters the door frame 1, the mounting shaft 5 is hidden between the door frame 1 and the door leaf 2, so that the mounting shaft 5 of the door leaf 2 and the door frame 1 cannot be observed visually, thereby improving the aesthetics of the door body and improving the compactness of the door body; at the same time, the mounting shaft 5 is hidden between the door frame 1 and the door leaf 2, reducing the influence of the mounting shaft 5 due to fire and the like, and facilitating the opening of the door leaf 2, thereby facilitating escape from the fire; and under the blocking effect of the mounting plate 3, after the door leaf 2 is opened to the door frame 1, the mounting shaft 5 is hidden on the back of the mounting plate 3, reducing the influence of environmental factors on the mounting shaft 5, and facilitating the opening of the door leaf 2.

[0030] 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 high-strength fire door, characterized by: The invention comprises a door frame (1) and a door leaf (2), wherein the door frame (1) is used to be embedded in an installation hole of a wall, and the door leaf (2) is hinged in the door frame (1). A mounting plate (3) is fixedly arranged on the inner side of the door frame (1), and a mounting hole (4) is provided on the mounting plate (3). A mounting shaft (5) is rotatably arranged on the inner side of the door frame (1), and the mounting shaft (5) is arranged vertically. A connecting section (16) is sleeved on the mounting shaft (5), and the connecting section (16) passes through the mounting hole (4) and is connected to the door leaf (2). The connecting section (16) is arc-shaped and is separated from the side of the mounting hole (4).

2. A high-strength fire door according to claim 1, characterized in that: The door frame (1) is fixedly provided with a mounting sleeve (6) and a positioning plate, the mounting shaft (5) is sleeved in the mounting sleeve (6), the positioning plate is fixedly provided on the mounting sleeve (6), two mounting sleeves (6) and two positioning plates are provided, and the connecting section (16) is located between the two positioning plates and supported on the positioning plates.

3. A high-strength fire door according to claim 2, characterized in that: A mounting notch is provided on the side of the mounting plate (3), the mounting notch is connected to the mounting hole (4), and the mounting notch is used for the positioning plate to pass through the mounting plate (3).

4. A high-strength fire door according to claim 1, characterized in that: The door leaf (2) comprises a core board (7), a fireproof board (8) and a plywood (9); two fireproof boards (8) are provided and are respectively located on both sides of the core board (7); two plywood boards (9) are provided and are respectively located on the outside of the fireproof boards (8) on both sides; the core board (7) is a fireproof core board; the fireproof board (8) is a magnesium non-combustible fireproof board; and the plywood (9) is a flame-retardant plywood.

5. A high-strength fire door according to claim 4, characterized in that: The core plate (7) is provided with an installation cavity (10), the cross section of the installation cavity (10) is consistent with the cross section of the core plate (7) and the area is smaller than the area of ​​the core plate (7), and the top of the installation cavity (10) is provided with a water injection hole (11) penetrating the core plate (7); a water outlet pipe (12) is provided in the door frame (1), the water outlet pipe (12) and the water injection pipe are located on the same straight line, the water outlet pipe (12) is connected to the indoor water system, and the indoor water system injects water into the core plate (7) through the water outlet pipe (12).

6. A high-strength fire door according to claim 5, characterized in that: A butterfly valve (13) is provided on the water outlet side of the water outlet pipe (12); the butterfly valve (13) is a rod-type valve; a rotating part for rotating a valve stem (14) to open the butterfly valve (13) to pass water is provided in the door frame (1).

7. A high-strength fire door according to claim 6, characterized in that: The water outlet of the water outlet pipe (12) is closed by a wax seal, and the wax seal section is located between the butterfly valve (13) and the outlet of the water outlet pipe (12).

8. A high-strength fire door according to claim 6, characterized in that: The rotating member comprises a push rod (15) arranged in the door frame (1), wherein the push rod (15) is a telescopic rod, one end of the push rod (15) is hinged in the door frame (1), and the other end is hinged on the valve stem (14), and the rotating member also comprises an air bag arranged in the push rod (15), wherein the air bag is injected with expansion gas, and the expansion gas is used to expand the air bag along the length direction of the push rod (15) after the ambient temperature rises, thereby pushing the push rod (15) to extend and driving the valve stem (14) to rotate.

9. A high-strength fire door according to claim 6, characterized in that: The water outlet pipe (12) comprises a sleeve (121) connected to an indoor water system and a slide pipe (122) slidably sleeved in the sleeve (121); the slide pipe (122) is used to be inserted into the water injection hole (11); the butterfly valve (13) is arranged on the sleeve (121) and is used to open and close the sleeve (121); the slide pipe (122) is initially located in the sleeve (121) and is separated from the door leaf (2); the wax seal section is located at the end and inside of the slide pipe (122) and is used to fix the slide pipe (122) in the sleeve (121) and to seal the slide pipe (122).

10. A high-strength fire door according to claim 5, characterized in that: A support frame is provided inside the core plate (7) and located inside the installation cavity (10), and the support frame is used to support the inner cavity of the core plate (7).

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