Light fireproof door core plate with high refractoriness

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a light fireproof door core plate with high refractoriness, which comprises a door core plate body, bottom protection plates for protection are mounted on the upper side and the lower side of the door core plate body, and side protection plates for connecting the bottom protection plates are mounted on the left side and the right side of the door core plate body. A connecting screw rod used for connection and a fixing nut used for fixing the connecting screw rod are arranged at the joint of the side protection plate and the bottom protection plate; a bottom mounting groove matched with the door core plate body is formed in the side, close to the door core plate body, of the bottom protection plate. A side installation groove matched with the door core plate body is formed in the side, close to the door core plate body, of the side protection plate, and the door core plate body comprises a fireproof layer, a heat insulation layer and a protection layer which are sequentially arranged from inside to outside. According to the utility model, the bottom protection plate and the side protection plates can be arranged outside the door core plate body to protect the corners of the door core plate body.

Description

Technical Field

[0001] The utility model relates to the technical field of fire doors, in particular to a lightweight fire door core board with high fire resistance. Background Technique

[0002] A lightweight fire door refers to a door that uses lightweight materials or special structural designs to reduce the weight of the door body while meeting the fire resistance performance requirements. Compared with traditional fire doors, lightweight fire doors are more particular about material selection to reduce the overall weight, facilitate installation and daily use. Although lightweight, lightweight fire doors also need to meet relevant national fire protection standards.

[0003] The existing fire door core boards are easily damaged during production and transportation. Once the fire door core board is damaged, it will affect the fire resistance performance of the fire door core board.

[0004] In the existing publicly disclosed technical solution, the publication number is CN219119100U, a lightweight fire door core board with high fire resistance, including a base board. The base board is the middle layer, and the structures below and above the base board are the same. A bonding board is connected to the top of the base board. A first fire protection layer, a second fire protection layer, and a wear-resistant layer are sequentially arranged on the bonding board, and a waterproof film is coated on the wear-resistant layer. It realizes two-way fire protection, is convenient for transportation, and can isolate the fire of a lightweight fire door core board with high fire resistance.

[0005] When the above technical solution is actually implemented, only relying on the wear-resistant layer to improve the wear resistance of the fire door core board, but when the fire door core board collides during transportation, it is easy to cause damage to the four corners, affecting the normal use of the fire door core board. Summary of the Invention

[0006] The purpose of the utility model is to provide a lightweight fire door core board with high fire resistance, which can be installed outside the core board body through the provided bottom protection board and side protection board to protect the corners of the core board body, so as to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A lightweight fire door core board with high fire resistance, including a core board body. Bottom protection boards for protection are installed on both the upper and lower sides of the core board body, and side protection boards for connecting the bottom protection boards are installed on both the left and right sides of the core board body. A connecting screw rod for connection and a fixing nut for fixing the connecting screw rod are provided at the connection between the side protection board and the bottom protection board.

[0008] A bottom installation groove adapted to the core board body is opened on one side of the bottom protection board close to the core board body.

[0009] A side installation groove adapted to the core board body is opened on one side of the side protection board close to the core board body.

[0010] Preferably, the door core board body includes a fireproof layer, a heat insulation layer, and a protective layer which are arranged in sequence from inside to outside, and two groups of the protective layer and the heat insulation layer are provided.

[0011] Preferably, the fireproof layer is composed of wooden keels and perlite, and the perlite is filled in the wooden keels.

[0012] Preferably, a number of glass fiber filaments are evenly distributed at equal intervals inside the fireproof layer.

[0013] Preferably, the protective layer is located on the outermost layer of the door core board body.

[0014] Preferably, the bottom protection plate is further provided with an inclined groove, a positioning hole is opened at the bottom of one side of the inclined groove close to the vertical center line of the bottom protection plate, and one side of the inclined groove close to the vertical center line of the bottom protection plate is lower than the side of the inclined groove far from the vertical center line of the bottom protection plate.

[0015] Preferably, the side protection plate is further provided with a movable hole, and the position of the movable hole is adapted to that of the positioning hole, and the connecting screw rod penetrates through the inside of the movable hole.

[0016] Preferably, a connecting spring is sleeved on the surface of the connecting screw rod, and a limiting plate is fixedly arranged at one end of the connecting screw rod penetrating through the side protection plate. The two ends of the connecting spring are respectively connected to the side protection plate and the limiting plate, and the limiting plate is located inside the side protection plate.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The bottom protection plate and the side protection plate provided can be installed outside the door core board body to protect the corners of the door core board body. The widths of the bottom protection plate and the side protection plate are greater than the thickness of the door core board body. When multiple door core board bodies installed with the bottom protection plate and the side protection plate are stacked up and down, mutual friction between the door core board bodies can be avoided, and further protection is provided for the door core board body;

[0019] 2. Through the provided connecting screw rod, under the action of the connecting spring, the connecting screw rod is inserted into the positioning hole, so that the connecting screw rod protrudes from the bottom protection plate, and the fixing nut is screwed on to complete the installation work of the bottom protection plate and the side protection plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is the overall structural view of the present invention;

[0022] Figure 2 It is the structural schematic diagram of the bottom protection plate and the side protection plate of the present invention;

[0023] Figure 3 For the present invention Figure 1 The enlarged view of A in it;

[0024] Figure 4 For the present invention Figure 2 The enlarged view of B in it;

[0025] Figure 5 It is the structural schematic diagram of the connecting screw of the present invention;

[0026] Figure 6 It is the sectional structural schematic diagram of the inclined groove of the present invention.

[0027] Explanation of the reference numerals in the drawings:

[0028] 1. Door core plate body; 11. Protective layer; 12. Heat insulation layer; 13. Fireproof layer; 2. Bottom protection plate; 21. Bottom installation groove; 22. Inclined groove; 23. Positioning hole; 3. Fixed nut; 4. Side protection plate; 41. Side installation groove; 42. Movable hole; 5. Connecting screw; 51. Connecting spring; 52. Limiting plate. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0030] The present invention provides a technical solution:

[0031] Please refer to Figures 1 to 6, a lightweight fireproof door core board with high refractoriness, comprising a door core board body 1. Bottom protection boards 2 for protection are installed on both the upper and lower sides of the door core board body 1, and side protection boards 4 for connecting the bottom protection boards 2 are installed on both the left and right sides of the door core board body 1. A connecting screw rod 5 for connection and a fixing nut 3 for fixing the connecting screw rod 5 are provided at the connection between the side protection board 4 and the bottom protection board 2;

[0032] On one side of the bottom protection board 2 close to the door core board body 1, a bottom installation groove 21 adapted to the door core board body 1 is provided;

[0033] On one side of the side protection board 4 close to the door core board body 1, a side installation groove 41 adapted to the door core board body 1 is provided;

[0034] The bottom protection board 2 is further provided with an inclined groove 22. A positioning hole 23 is provided at the bottom on one side of the inclined groove 22 close to the vertical center line of the bottom protection board 2. One side of the inclined groove 22 close to the vertical center line of the bottom protection board 2 is lower than the side of the inclined groove 22 far from the vertical center line of the bottom protection board 2. The side protection board 4 is further provided with a movable hole 42, and the position of the movable hole 42 is adapted to that of the positioning hole 23. The connecting screw rod 5 penetrates through the inside of the movable hole 42. A connecting spring 51 is sleeved on the surface of the connecting screw rod 5. One end of the connecting screw rod 5 penetrating through the side protection board 4 is fixedly provided with a limiting plate 52. Both ends of the connecting spring 51 are respectively connected to the side protection board 4 and the limiting plate 52, and the limiting plate 52 is located inside the side protection board 4.

[0035] By adopting the above technical solution, when transporting the door core board body 1, the bottom protection board 2 is clamped on both the upper and lower sides of the door core board body 1, and the side protection board 4 is clamped on both the left and right sides of the door core board body 1. When the side protection board 4 is being inserted, the connecting screw rod 5 is pressed inward, and the connecting screw rod 5 retracts into the movable hole 42, and the connecting spring 51 is stretched. The distance between the side protection board 4 and the limiting plate 52 increases, so that the connecting screw rod 5 is aligned with the inclined groove 22. Since the side of the inclined groove 22 is an open structure, it is convenient for the connecting screw rod 5 to be clamped inside the inclined groove 22. The side protection board 4 is pushed towards the side close to the door core board body 1, and the side protection board 4 drives the connecting screw rod 5 to move in the inclined groove 22. When the connecting screw rod 5 reaches the position of the positioning hole 23, under the action of the connecting spring 51, the connecting screw rod 5 is inserted into the positioning hole 23. At this time, the connecting screw rod 5 protrudes from the bottom protection board 2, and the fixing nut 3 is screwed on to realize the installation of the bottom protection board 2 and the side protection board 4, which can protect the corners of the door core board body 1. At the same time, since the widths of the bottom protection board 2 and the side protection board 4 are greater than the thickness of the door core board body 1, when multiple door core board bodies 1 with the bottom protection board 2 and the side protection board 4 installed are stacked vertically, mutual friction between the door core board bodies 1 can be avoided, further protecting the door core board body 1.

[0036] Specifically, such asFigure 3 As shown in the figure, the door core plate body 1 includes a fireproof layer 13, a heat insulation layer 12, and a protective layer 11 arranged in sequence from the inside outwards. There are two groups of protective layer 11 and heat insulation layer 12. The fireproof layer 13 is composed of wooden keels and perlite, and the perlite is filled in the wooden keels. A number of equally spaced and uniformly distributed fiberglass filaments are penetrated inside the fireproof layer 13. The protective layer 11 is located on the outermost layer of the door core plate body 1.

[0037] By adopting the above technical solution, the protective layer 11 can be selected according to waterproof materials, wear-resistant materials, sound insulation materials, etc. to improve the functionality of the door core plate body 1. The heat insulation layer 12 is used to increase the heat insulation effect of the protective layer 11. The equally spaced and uniformly distributed fiberglass filaments form a net structure and are distributed inside the fireproof layer 13 to increase the overall strength of the fireproof layer 13.

[0038] Working principle: When transporting the door core plate body 1, the bottom protection plate 2 is clamped on the upper and lower sides of the door core plate body 1, and the side protection plate 4 is clamped on the left and right sides of the door core plate body 1. When the side protection plate 4 is inserted, the connecting screw rod 5 is pressed inwards, and the connecting screw rod 5 retracts into the moving hole 42, and the connecting spring 51 stretches. The distance between the side protection plate 4 and the limiting plate 52 increases, so that the connecting screw rod 5 is aligned with the inclined groove 22. Since the side of the inclined groove 22 is an open structure, it is convenient for the connecting screw rod 5 to be clamped inside the inclined groove 22. Push the side protection plate 4 towards the side close to the door core plate body 1. The side protection plate 4 drives the connecting screw rod 5 to move in the inclined groove 22. When the connecting screw rod 5 reaches the positioning hole 23, under the action of the connecting spring 51, the connecting screw rod 5 is inserted into the positioning hole 23. At this time, the connecting screw rod 5 protrudes from the bottom protection plate 2, and the fixing nut 3 is screwed on to realize the installation of the bottom protection plate 2 and the side protection plate 4, which can protect the corners of the door core plate body 1. At the same time, since the widths of the bottom protection plate 2 and the side protection plate 4 are greater than the thickness of the door core plate body 1, when multiple door core plate bodies 1 with the bottom protection plate 2 and the side protection plate 4 installed are stacked up and down, it can prevent the door core plate bodies 1 from rubbing against each other and further protect the door core plate body 1.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light-weight fireproof door core panel with high fire resistance, comprising a door core panel body (1), characterized in that: The door core plate (1) is provided with bottom protection plates (2) for protection on both upper and lower sides, and the door core plate (1) is provided with side protection plates (4) for connecting to the bottom protection plates (2) on both left and right sides, and the connection between the side protection plates (4) and the bottom protection plates (2) is provided with connecting screws (5) for connection, and fixing nuts (3) for fixing the connecting screws (5); A bottom installation groove (21) adapted to the door core plate body (1) is provided on a side of the bottom protection plate (2) close to the door core plate body (1); A side installation groove (41) matching the door core board body (1) is provided on the side of the side protection board (4) close to the door core board body (1).

2. A light-weight fireproof door core board with high refractoriness according to claim 1, characterized in that: The door core plate body (1) comprises a fireproof layer (13), a heat insulation layer (12) and a protective layer (11) which are arranged in sequence from the inside to the outside, and the protective layer (11) and the heat insulation layer (12) are each provided in two groups.

3. A light-weight fireproof door core board with high refractoriness according to claim 2, characterized in that: The fireproof layer (13) is composed of a wooden keel and perlite, and the perlite is filled in the wooden keel.

4. A light-weight fireproof door core board with high fire resistance according to claim 3, characterized in that: A plurality of glass fiber filaments evenly distributed at equal distances are inserted into the interior of the fireproof layer (13).

5. A light-weight fireproof door core board with high fire resistance according to claim 4, characterized in that: The protective layer (11) is located at the outermost layer of the door core plate body (1).

6. A light-weight fireproof door core board with high fire resistance according to claim 1, characterized in that: The bottom protection plate (2) is further provided with an oblique groove (22), a positioning hole (23) being provided at the bottom of a side of the oblique groove (22) close to the vertical center line of the bottom protection plate (2), and a side of the oblique groove (22) close to the vertical center line of the bottom protection plate (2) is lower than a side of the oblique groove (22) away from the vertical center line of the bottom protection plate (2).

7. A light-weight fireproof door core board with high fire resistance according to claim 6, characterized in that: The side protection plate (4) is also provided with a movable hole (42), and the positions of the movable hole (42) and the positioning hole (23) are mutually adapted, and the connecting screw (5) passes through the interior of the movable hole (42).

8. A light-weight fireproof door core board with high fire resistance according to claim 7, characterized in that: A connecting spring (51) is sleeved on the surface of the connecting screw (5), and a limiting plate (52) is fixedly arranged at one end of the connecting screw (5) which passes through the side protection plate (4), and two ends of the connecting spring (51) are respectively connected to the side protection plate (4) and the limiting plate (52), and the limiting plate (52) is located inside the side protection plate (4).

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