Fireproof and flood-proof door

Abstract

The utility model discloses a fire-proof and flood-proof door, which relates to a door and particularly comprises a door frame and a door leaf, the door leaf is closed on the door frame to form fire-proof and flood-proof sealing when being closed, and a sealing strip is arranged on the periphery of the inner side of the door leaf. A knife-shaped pressing strip which can be matched with the sealing strip to achieve sealing of the door frame and the door leaf is arranged on the periphery of the outer side of the door frame. A first rigid lap joint face is further arranged on the periphery of the outer side of the door frame, and a second rigid lap joint face capable of being matched with the first lap joint face to achieve mutual lap joint is further arranged on the inner side of the door leaf. When the door leaf is closed, the front end of the pressing strip cuts and presses the sealing strip to form sealing, and the first lap joint face and the second lap joint face are in lap joint with each other. According to the fireproof and flood-proof door, the pressing strip is pressed on the sealing strip in a cut mode, the sealing effect is better, double sealing can be achieved between the door and the frame through sealing formed by the first lap joint face and the second lap joint face, and the sealing performance of the fireproof and flood-proof door is further improved.

Description

Technical Field

[0001] The utility model relates to a door, in particular to a fire and flood prevention door. Background Art

[0002] The doors of transformer rooms and substations that lead directly to the outside are generally fireproof doors. Some transformer rooms and substations also need to take anti-flooding measures. For example, urban waterlogging can easily cause transformer rooms and substations in underground projects to be flooded, so anti-flooding measures are also needed. Therefore, some doors of transformer rooms and substations that lead directly to the outside need not only fireproofing, but also floodproofing. In addition, the fireproof doors in the existing technology generally use single-plane sealing, and the smoke and fireproof sealing effect needs to be improved. Utility Model Content

[0003] The utility model aims to provide a fire and flood prevention door to solve the problems raised in the above background technology.

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

[0005] A fireproof and floodproof door comprises a door frame and a door leaf. When the door leaf is closed, it closes on the door frame to form a fireproof and floodproof seal. When the door leaf is closed on the door frame, it forms a fireproof and floodproof seal. A sealing strip is provided on the inner periphery of the door leaf, and a knife-shaped pressure strip is provided on the outer periphery of the door frame to cooperate with the sealing strip to achieve sealing between the door frame and the door leaf. A rigid first overlapping surface is also provided on the outer periphery of the door frame, and a rigid second overlapping surface is provided on the inner side of the door leaf to cooperate with the first overlapping surface to achieve mutual overlapping.

[0006] Preferably, when the door leaf is closed, the front end of the pressure strip cuts and presses the sealing strip to form a seal, the first overlapping surface and the second overlapping surface overlap each other, and the width of the overlapping part is not less than 12 mm, thereby ensuring the overlapping stability of the door leaf and the door frame.

[0007] Preferably, when the door leaf is closed, a gap between the first overlapping surface and the second overlapping surface at the overlapping portion is no more than 3 mm, thereby ensuring the sealing of the door leaf when it is closed.

[0008] Preferably, when the door leaf is closed, the first overlapping surface and the second overlapping surface are parallel to each other at the overlapping portion.

[0009] Preferably, the first overlapping surface is located on the inner side of the pressure strip, and the second overlapping surface is located on the inner side of the sealing strip, so that the positions of the first overlapping surface and the second overlapping surface, the pressure strip and the sealing strip correspond to each other.

[0010] Preferably, a fireproof sealing strip is provided on the surface of the overlapping part of the first overlapping surface and / or the second overlapping surface. It should be noted that the sealing strip provided inside the door leaf is also a fireproof sealing strip.

[0011] Preferably, the thickness of the front end of the pressing strip is not greater than 4 mm to ensure the sealing effect when the pressing strip is cut and pressed.

[0012] Preferably, the mating part between the inner side of the door frame and the edge of the door leaf is stepped. The first overlapping surface is one of the stepped surfaces on the inner side of the door frame, and the second overlapping surface is arranged opposite to the first overlapping surface.

[0013] Preferably, the second overlapping surface is the inner surface of the door leaf and overlaps with the first overlapping surface.

[0014] Preferably, the installation side edge where the door frame mates with the wall, the outermost side edge of the door frame, and the pressing strip are formed by multiple bends of the same steel plate, so that the water-facing side of the door frame is designed as a whole steel plate without welds, further improving the sealing performance of the door.

[0015] Preferably, the installation side edge, the outermost side edge of the door frame, and the pressing strip are formed by multiple bends of the same steel plate and are in the shape of shape. The pressing strip is located at the tail of the steel plate facing the door leaf, and the sealing strip is pressed by the pressing strip.

[0016] Preferably, a "C"-shaped installation groove for the sealing strip is provided at the edge of the door leaf. The bottom edge of the installation groove, the side edge of the installation groove away from the door leaf main body, and the outermost surface of the door leaf share the same steel plate, so that the water-facing side of the door leaf is a whole without welds, further improving the sealing performance of the door leaf.

[0017] Preferably, the height difference between the outermost side edge of the door frame and the outermost surface of the door leaf is not greater than 1 mm.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] First, the door body in the present utility model simultaneously has the functions of fire prevention and flood prevention, can better protect the transformer room and the switchgear room, and improves the practicability of the door frame and door leaf structure for fire prevention and flood prevention, which is worthy of popularization and use.

[0020] Second, in the present utility model, the pressing strip is cut and pressed onto the sealing strip, and the pressing strip is a long strip-shaped knife-shaped pressing strip. The part of the pressing strip itself pressing on the sealing strip is relatively thin. Compared with the sealing method of two flat surfaces fitting together in the prior art, when using the pressing strip in the present utility model for sealing, the same pressing force can generate a larger sealing specific pressure on a narrower contact surface, and the sealing effect is better.

[0021] 3. When the door leaf of the utility model is closed to the door frame, in addition to the seal formed by the first overlapping surface and the second overlapping surface, there is a second seal formed by the pressure strip pressing on the sealing strip, so that double sealing can be achieved between the door and the frame. The gap between the two is tortuous, which can effectively prevent smoke from passing through. It has good sealing performance and beautiful appearance, which improves the fire resistance of the fire door. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a fire and flood door embodiment 1 Figure 1 .

[0023] Figure 2 A schematic diagram of the structure of a fire and flood door embodiment 1 Figure 2 .

[0024] Figure 3 A schematic diagram of the structure of a fire and flood door embodiment 1 Figure 3 .

[0025] Figure 4 It is a structural schematic diagram of a second embodiment of a fire and flood prevention door.

[0026] Figure 5 A schematic diagram of the structure of a fire and flood door embodiment 1 Figure 4 .

[0027] Figure 6 It is a structural schematic diagram of a third embodiment of a fire and flood prevention door.

[0028] Figure 7 It is a structural schematic diagram of a fourth embodiment of a fire and flood prevention door.

[0029] Figure 8 It is a structural schematic diagram of a fifth embodiment of a fire and flood prevention door.

[0030] Fig. 9 It is a structural schematic diagram of a sixth embodiment of a fire and flood prevention door.

[0031] As shown in the figure: 1. Door frame; 11. Pressure strip; 12. First overlapping surface; 13. Outermost edge; 14. Installation side; 2. Door leaf; 21. Sealing strip; 22. Second overlapping surface; 23. Outermost surface; 24. Bottom edge of the installation groove; 25. Side away from the main body of the door leaf. DETAILED DESCRIPTION

[0032] 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.

[0033] Embodiment 1

[0034] See also Figure 1 In an embodiment of the utility model, a fireproof and floodproof door comprises a door frame 1 and a door leaf 2. When the door leaf 2 is closed, it closes on the door frame 1 to form a fireproof and floodproof seal. A sealing strip 21 is provided on the inner periphery of the door leaf 2, and a knife-shaped pressure strip 11 is provided on the outer periphery of the door frame 1 to cooperate with the sealing strip 21 to achieve sealing between the door frame 1 and the door leaf 2; a rigid first lap surface 12 is also provided on the outer periphery of the door frame 1, and a rigid second lap surface 22 is provided on the inner side of the door leaf 2 to cooperate with the first lap surface 12 to achieve mutual overlap; when the door leaf 2 is closed, the front end of the pressure strip 11 cuts and presses the sealing strip 21 to form a seal, and the first lap surface 12 and the second lap surface 22 form mutual overlap.

[0035] It should be noted that the door frame and door leaf are made of fireproof door materials that meet the requirements of GB12955 fireproof door standards.

[0036] The utility model realizes the flood prevention function of the door by cutting and pressing the sealing strip 21 by the pressure strip 11, and realizes the fire prevention function of the door by arranging the door frame 1 and the door leaf 2. By making the door body have both fire prevention and flood prevention functions, better protection for the transformer room and the substation room can be achieved, and the practicability of the door frame and door leaf structure used for fire prevention and flood prevention is improved, and the utility model is worthy of popularization and use.

[0037] In addition, in the utility model, the pressure strip 11 is cut and pressed onto the sealing strip 21, and the pressure strip 11 is a long knife-shaped pressure strip, and the part pressed on the sealing strip 21 is relatively thin. Compared with the two planes fitting and sealing method in the prior art, when the pressure strip 11 in the utility model is used for sealing, the same pressing force can produce a larger sealing specific pressure on a narrower contact surface, and the sealing effect is better.

[0038] It should be noted that the utility model adopts an extrusion seal, and its basic working principle is to rely on the elastic deformation of the seal to create contact pressure on the sealing contact surface. If the contact pressure is greater than the internal pressure of the sealed medium, no leakage will occur, otherwise leakage will occur. The same pressing force can produce a larger sealing specific pressure on a narrower contact surface, and the sealing effect is better.

[0039] The edge of the door leaf 2 is provided with a "C"-shaped installation groove for the sealing strip 21, and the sealing strip 21 is installed in the "C"-shaped installation groove to achieve full sealing between the door leaf 2 and the door frame 1.

[0040] When the door leaf 2 is closed, the front end of the pressure strip 11 cuts and presses the sealing strip 21 to form a seal, and the first overlapping surface 12 and the second overlapping surface 22 form an overlapping with each other, and the width of the overlapping part is not less than 12 mm to ensure the overlapping stability between the door leaf 2 and the door frame 1.

[0041] When the door leaf 2 is closed, the gap between the first overlapping surface 12 and the second overlapping surface 22 at the overlapping part is not more than 3 mm to ensure the sealing performance when the door leaf 2 is closed.

[0042] When the door leaf 2 is closed, the first overlapping surface 12 and the second overlapping surface 22 are parallel to each other at the overlapping part.

[0043] The first overlapping surface 12 is located inside the pressure strip 11, and the second overlapping surface 22 is located inside the sealing strip 21, so that the positions of the first overlapping surface 12 and the second overlapping surface 22, the pressure strip 11 and the sealing strip 21 correspond to each other.

[0044] The surface of the first overlapping surface 12 and / or the second overlapping surface 22 at the overlapping part is provided with a fireproof sealing strip, which can improve the fireproof airtightness, inhibit the spread of fire and smoke under fire conditions, and meet the requirements of the GB12955 fire door standard. It should be noted that the sealing strip 21 provided inside the door leaf 2 is also a fireproof sealing strip.

[0045] It should be noted that when the door leaf 2 of the present utility model is closed to the door frame 1, in addition to the seal formed by the first overlapping surface 12 and the second overlapping surface 22, there is also a second seal formed by the pressure strip 11 pressing on the sealing strip 21, so that double sealing can be achieved between the door and the frame, the gap between the two is tortuous, which can effectively block the passage of smoke, has good sealing performance and beautiful appearance, and improves the fireproof performance of the fire door.

[0046] The thickness of the front end of the pressure strip 11 is not more than 4 mm to ensure the sealing effect when the pressure strip cuts and presses.

[0047] The matching part between the inner side of the door frame 1 and the edge of the door leaf 2 is in a stepped shape. The first overlapping surface 12 is one of the stepped surfaces on the inner side of the door frame 1, and the second overlapping surface 22 is arranged opposite to the first overlapping surface 12.

[0048] The second overlapping surface 22 is the inner surface of the door leaf 2 and overlaps with the first overlapping surface 12.

[0049] The installation side 14 where the door frame 1 mates with the wall, the outermost side 13 of the door frame 1, and the bead 11 are formed by folding the same steel plate multiple times, such that the water-facing side of the door frame 1 is designed as a single piece of steel plate without welds, further improving the sealing performance of the door.

[0050] The installation side 14, the outermost side 13 of the door frame 1, and the bead 11 are formed by folding the same steel plate multiple times, presenting a shape. The bead 11 is located at the tail end of the steel plate towards the door leaf 2, and the seal strip 21 is pressed by the bead 11.

[0051] Please refer to Figure 2 , a "C"-shaped installation groove for the seal strip 21 is provided at the edge of the door leaf 2. The bottom side 24 of the installation groove, the side 25 of the installation groove away from the door leaf body, and the outermost surface 23 of the door leaf 2 share the same steel plate, such that the water-facing side of the door leaf 2 is an integral whole without welds, further improving the sealing performance of the door leaf.

[0052] Please refer to Figure 3 , the height difference between the outermost side 13 of the door frame 1 and the outermost surface 23 of the door leaf 2 is not more than 1 mm, meeting the requirements of the GB12955 fire door standard.

[0053] It should be noted that the bead 11 and the seal strip 21 above the water-blocking height can be not provided to save costs.

[0054] Please refer to Figure 1 , Figure 2 and Figure 3 , the cross-section of the edge where the door leaf 2 contacts the door frame 1 presents a shape.

[0055] Please refer to Figure 5 , the cross-section of the door frame 1 presents a shape, the front frame presents a shape, the rear frame presents a shape. The figure includes the door frame 1, the bead 11, the first overlapping surface 12, the outermost side 13 of the door frame 1, the door leaf 2, the seal strip 21, the second overlapping surface 22, and the outermost surface 23 of the door leaf 2.

[0056] Embodiment 2

[0057] Please refer to Figure 4 , the overlapping parts of the first overlapping surface 12 and the second overlapping surface 22 are both provided with mutually meshing corrugations, which can improve the fireproof sealing performance, play a role in suppressing the spread of fire and smoke under fire conditions, and meet the requirements of the GB12955 fire door standard.

[0058] Embodiment 3

[0059] Please refer to Figure 6 , the cross-section of the door frame 1 presents a Shape, front frame Shape, rear frame The figure includes a door frame 1, a pressure strip 11, a first overlapping surface 12, the outermost edge 13 of the door frame 1, a door leaf 2, a sealing strip 21, a second overlapping surface 22, and the outermost surface 23 of the door leaf 2.

[0060] Embodiment 4

[0061] See also Figure 7 The overall shape of the cross section of the door frame 1 is Shape, front frame Shape, rear frame The figure includes a door frame 1, a pressure strip 11, a first overlapping surface 12, the outermost edge 13 of the door frame 1, a door leaf 2, a sealing strip 21, a second overlapping surface 22, and the outermost surface 23 of the door leaf 2.

[0062] Embodiment 5

[0063] See also Figure 8 The overall shape of the cross section of the door frame 1 is When the front frame is Shape, rear frame The figure includes a door frame 1, a pressure strip 11, a first overlapping surface 12, the outermost edge 13 of the door frame 1, a door leaf 2, a sealing strip 21, a second overlapping surface 22, and the outermost surface 23 of the door leaf 2.

[0064] Embodiment 6

[0065] See also Fig. 9 The door frame 1 is formed by bending a whole steel plate multiple times, and its cross section is The figure includes a door frame 1, a pressure strip 11, a first overlapping surface 12, the outermost edge 13 of the door frame 1, a door leaf 2, a sealing strip 21, a second overlapping surface 22, and the outermost surface 23 of the door leaf 2.

[0066] It should be noted that the door frame and door leaf structure used for fire prevention and flood control in the present application can be a single door, a double door or a multiple door, and the specific number of door leaves is included in the protection scope of the present application. In addition, the door frame and door leaf structure used for fire prevention and flood control in the present application is also provided with a locking mechanism for locking the door body. The locking mechanism can use a fireproof mechanical lock or electronic lock in the prior art. Its specific structure, setting method and working principle are all existing mature technologies and will not be elaborated here.

[0067] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A fire and flood proof door, comprising a door frame (1) and a door leaf (2), wherein the door leaf (2) is closed on the door frame (1) to form a fire and flood proof seal, characterized in that: A sealing strip (21) is provided around the inner periphery of the door leaf (2), and a knife-shaped pressing strip (11) capable of cooperating with the sealing strip (21) to seal the door frame (1) and the door leaf (2) is provided around the outer periphery of the door frame (1); a rigid first overlapping surface (12) is further provided around the outer periphery of the door frame (1), and a rigid second overlapping surface (22) capable of cooperating with the first overlapping surface (12) to achieve mutual overlapping is provided on the inner side of the door leaf (2); when the door leaf (2) is closed, the front end of the pressing strip (11) cuts and presses the sealing strip (21) to form a seal, and the first overlapping surface (12) and the second overlapping surface (22) form mutual overlapping.

2. A fire and flood door according to claim 1, characterized in that: When the door leaf (2) is closed, the width of the overlapping part of the first overlapping surface (12) and the second overlapping surface (22) is not less than 12 mm.

3. A fire and flood door according to claim 1, characterized in that: When the door leaf (2) is closed, the gap between the first overlapping surface (12) and the second overlapping surface (22) at the overlapping part is not greater than 3 mm.

4. A fire and flood door according to claim 1, characterized in that: When the door leaf (2) is closed, the first overlapping surface (12) and the second overlapping surface (22) are parallel to each other at the overlapping part.

5. A fire and flood door according to claim 1, characterized in that: The first overlapping surface (12) is located inside the pressing strip (11), and the second overlapping surface (22) is located inside the sealing strip (21).

6. A fire and flood door according to any one of claims 1 to 5, characterized in that: A fireproof sealing strip is provided on the surface of the overlapping part of the first overlapping surface (12) and / or the second overlapping surface (22).

7. A fire and flood door according to any one of claims 1 to 5, characterized in that: Wave patterns engaging with each other are provided on the overlapping parts of the first overlapping surface (12) and the second overlapping surface (22).

8. A fire and flood door according to claim 1, characterized in that: The thickness of the front end of the pressing strip (11) is not greater than 4 mm.

9. A fire and flood door according to claim 1, characterized in that: The height difference between the outermost side (13) of the door frame (1) and the outermost surface (23) of the door leaf (2) is not greater than 1 mm.

10. A fire and flood door according to claim 1 or 9, characterized in that: The matching part between the inner side of the door frame (1) and the edge of the door leaf (2) is stepped, the first overlapping surface (12) is one of the stepped surfaces on the inner side of the door frame (1), and the second overlapping surface (22) is arranged opposite to the first overlapping surface (12).

11. A fire and flood door according to claim 1, characterized in that: The second overlapping surface (22) is the inner surface of the door leaf (2).

12. The fire and flood protection door according to claim 1, characterized in that: The installation side edge (14) where the door frame (1) cooperates with the wall, the outermost side (13) of the door frame (1), and the pressing strip (11) are formed by multiple bends of the same steel plate.

13. A fire and flood door according to claim 12, characterized in that: The installation side edge (14), the outermost edge (13) of the door frame (1), and the pressure strip (11) are formed by bending the same steel plate multiple times. shape, and the pressure strip (11) is located at the tail end of the steel plate facing the door leaf (2).

14. A fire and flood door according to claim 1, characterized in that: A "C"-shaped installation groove for the sealing strip (21) is provided at the edge of the door leaf (2), and the bottom edge (24) of the installation groove, the side edge (25) of the installation groove away from the door leaf main body, and the outermost surface (23) of the door leaf (2) share the same steel plate.

15. A fire and flood door according to claim 1 or 9 or 12 or 13, characterized in that: The door frame (1) has a cross section of shape or shape or shape or shape or shape.

16. A fire and flood door according to claim 15, characterized in that: The door frame (1) is formed by overlapping and combining two parts, a front frame and a rear frame, and its overall cross-sectional shape is shape or shape or shape or shape; when the overall shape of the cross section of the door frame (1) is When the front frame is Shape, rear frame shape; when the overall shape of the cross section of the door frame (1) is When the shape is Shape, rear frame shape; when the overall shape of the cross section of the door frame (1) is When the front frame is Shape, rear frame shape.

17. A fire and flood door according to claim 1 or 2 or 3 or 4 or 9 or 11 or 13 or 14, characterized in that: The edge section where the door leaf (2) contacts the door frame (1) is shape.

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