Door bottom sealing device, door and preparation method thereof

Abstract

The present application relates to a door bottom sealing device, a door and a preparation method thereof, wherein the door bottom sealing device is installed at the lower end of the door body, and comprises a fireproof block, a reinforcement card strip, a fireproof sealing strip and a flame-retardant fireproof cloth; the flame-retardant fireproof cloth is wrapped around the outer surface of the fireproof block, the bottom of the fireproof block is provided with a plane, the upper surface of the fireproof block is provided with a groove adapted to the door bottom, the reinforcement card strip is provided with a plurality of strips and is embedded in the groove at intervals, the reinforcement card strip is in a U shape, the fireproof sealing strip is provided at the bottom of the groove and presses the reinforcement card strip, the reinforcement card strip is adapted to be clamped at the lower end of the door bottom and wraps the door bottom. The fireproof block fills the gap between the door bottom and the ground, smoke and flames are not easy to emerge from the door bottom, and the present application has a good fireproof effect.

Description

Technical Field

[0001] The present application relates to the field of door bottom sealing, and in particular to a door bottom sealing device, a door and a preparation method thereof. Background Art

[0002] A fire door is a door that meets the requirements of fire resistance, stability, integrity and thermal insulation within a certain period of time. It is installed in fire compartments, evacuation stairwells, vertical shafts and other places. It is a fire partition with a certain fire resistance and can prevent the spread of fire and smoke. It can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.

[0003] After the fire door is installed, in order to prevent friction with the ground when opening and closing the fire door, a certain gap is generally left between the bottom of the fire door and the ground. The size of the gap varies. However, when a fire occurs, smoke and flames can easily emerge from the gap, and the outside air can also easily enter the fire area through the gap, causing the fire to spread and the fire prevention effect to be poor. Summary of the invention

[0004] In order to prevent smoke from escaping from under the door and enhance the fire prevention effect, the present application provides a door bottom sealing device, a door and a preparation method thereof.

[0005] In a first aspect, the present application provides a door bottom sealing device, which adopts the following technical solution:

[0006] A door bottom sealing device, comprising a fireproof block, a reinforcement card strip, a fireproof sealing strip and a flame retardant fireproof cloth;

[0007] The flame-retardant fireproof cloth is wrapped around the outer surface of the fireproof block, a plane is provided at the bottom of the fireproof block, a groove adapted to the door bottom is provided on the upper surface of the fireproof block, a plurality of reinforcement strips are provided and embedded in the groove at intervals, the reinforcement strips are U-shaped, the fireproof sealing strip is provided at the bottom of the groove and presses the reinforcement strips, and the reinforcement strips are adapted to be clamped at the lower end of the door bottom and wrap the door bottom.

[0008] By adopting the above technical scheme, the groove on the fireproof block wraps the bottom of the door, and the plane of the bottom of the fireproof block contacts the ground, thereby filling the gap between the bottom of the door and the ground, making it difficult for smoke or flames to come out of the gap, and the fireproof effect is good. After wrapping the fireproof block with flame-retardant fireproof cloth, when opening and closing the fireproof door, the friction between the fireproof block and the ground is reduced, and the door opening and closing is more convenient. It can also reduce the degree of wear on the bottom plane of the fireproof block, thereby extending the service life of the fireproof block. At the same time, after the reinforcement strip is embedded in the groove of the fireproof block, not only the structural strength of the fireproof block is enhanced, but also the reinforcement strip has a certain elasticity, and can be more firmly wrapped around the lower end of the door bottom. The reinforcement strip is arranged at intervals. After the fireproof sealing strip is installed at the bottom of the groove, it not only prevents the reinforcement strip from detaching from the groove, but also fills the gap between two adjacent reinforcement strips, so that the sealing between the fireproof block and the door bottom is better, thereby achieving a better fireproof effect.

[0009] Preferably, the thickness of the reinforcement strip is between 0.3-0.7 mm, and the reinforcement strip is made of hard metal.

[0010] By adopting the above technical scheme, when the thickness of the reinforcement strip is less than 0.3 mm, the structural strength of the reinforcement strip is poor and cannot provide good support for the fireproof block. If the thickness of the reinforcement strip is greater than 0.7 mm, the material consumption for producing the reinforcement strip is large and the production cost is high. Therefore, the thickness of the reinforcement strip is best between 0.3-0.7 mm. The thin sheet-shaped reinforcement strip made of metal has good elasticity and can be firmly clamped on the bottom of the door.

[0011] Preferably, the outer surface of the fireproof block is coated with strong glue and forms an adhesive layer, and the flame-retardant fireproof cloth is bonded to the outer surface of the fireproof block through the adhesive layer.

[0012] By adopting the above technical solution, the connection method between the flame retardant fireproof cloth and the fireproof block is simple, the connection is firm, and the manufacturing process is simple.

[0013] Preferably, the thickness of the flame retardant fireproof cloth is between 0.1-0.4 mm, and the thickness of the fireproof sealing strip is between 1-4 mm.

[0014] By adopting the above technical scheme, if the thickness of the flame retardant and fireproof cloth is less than 0.1 mm, the flame retardant and fireproof cloth is easily worn by the ground; if the thickness of the flame retardant and fireproof cloth is greater than 0.4 mm, the material consumption of the flame retardant and fireproof cloth is large and the production cost is high; if the thickness of the fireproof sealing strip is less than 1 mm, the gap between two adjacent reinforcement strips cannot be filled well, resulting in reduced sealing of the fireproof block and poor fireproof effect; if the thickness of the fireproof sealing strip is greater than 4 mm, the material consumption of the fireproof sealing strip is large and the production cost is high. Therefore, the thickness of the flame retardant and fireproof cloth is optimally between 0.1-0.4 mm and the thickness of the fireproof sealing strip is optimally between 1-4 mm.

[0015] Preferably, the bottom of the groove is coated with strong glue and forms an adhesive layer, and the fireproof sealing strip is bonded to the fireproof block through the adhesive layer.

[0016] By adopting the above technical solution, the connection structure between the fireproof sealing strip and the fireproof block is firm, the connection method is simple, and the manufacturing process is simple.

[0017] Preferably, the fireproof block is made of flexible foam insulation rubber, and the cross-sections of the fireproof block on both sides are semicircular, or the cross-sections of the fireproof block on both sides are right triangles.

[0018] By adopting the above technical scheme, the material of the fireproof block is relatively soft, and it is not easy to scratch the ground when it contacts the ground. In addition, the fireproof block has good fire resistance, is not easy to be burned in the event of a fire, and has a good fire prevention effect. When the cross-sections on both sides of the fireproof block are semicircular, if there are impurities or stones on the ground, the arc-shaped surfaces on both sides of the fireproof block have a certain spacing distance from the ground. When opening and closing the door, impurities or stones are not easy to get stuck on both sides of the fireproof block, so that the two sides of the fireproof block close to the opening end of the groove are not easy to be torn apart. After the fireproof block is connected to the bottom of the door, the bottom of the door exerts downward pressure on the fireproof block. When the cross-sections on both sides of the fireproof block are right-angled triangles, the structures on both sides of the bottom of the fireproof block are more stable, so that the fireproof block has better pressure-bearing capacity. When opening and closing the door, the two sides of the fireproof block close to the opening end of the groove are not easy to be torn apart, and the structure is more stable and firm.

[0019] Preferably, a plurality of U-shaped recesses are spaced apart in the groove, the reinforcement strip is clipped into the recess, and the upper surface of the horizontal section of the reinforcement strip is on the same horizontal plane as the bottom of the groove.

[0020] By adopting the above technical solution, the reinforcement strip is not embedded in the groove and does not protrude from the surface of the bottom of the groove, so that there is no gap between the spacing between the two reinforcement strips and the bottom of the groove. It is more convenient to fix the fireproof sealing strip with strong glue, and it can further improve the sealing between the fireproof block and the door bottom, thereby improving the fireproof effect.

[0021] Preferably, spikes are arranged at intervals on the outer surface of the reinforcement strip, and the spikes penetrate into the inner side wall and the bottom wall of the groove.

[0022] By adopting the above technical solution, after the nail pierces the groove, the structural firmness between the reinforcement strip and the fireproof block is enhanced, making it difficult for the reinforcement strip and the fireproof block to separate from each other, and the structural stability and firmness are better.

[0023] In a second aspect, the present application provides a door, which adopts the following technical solution:

[0024] A door comprises a door body and the door bottom sealing device as described above, wherein the door bottom sealing device is assembled at the bottom of the door body.

[0025] By adopting the above technical scheme, on the basis of the above advantages of the door bottom sealing device, the door also has the above advantages. After the door bottom sealing device is installed at the lower end of the door body, smoke is not easy to emerge from the bottom of the door, and the fire prevention effect is good.

[0026] In a third aspect, the present application provides a method for preparing a door bottom sealing device, which adopts the following technical solution:

[0027] A method for preparing a door bottom sealing device, used for preparing the door bottom sealing device as described above, the method specifically comprises the following steps:

[0028] Step 1: Extruding a long strip of fireproof block through an extruder;

[0029] Step 2: Cut the fireproof block to the appropriate length according to the width of the door;

[0030] Step 3: Apply strong glue to the outer surface of the fireproof block, and bond the flame retardant fireproof cloth to the outer surface of the fireproof block;

[0031] Step 4: embed multiple pre-prepared reinforcement strips into the grooves of the fireproof block;

[0032] Step 5: Apply strong glue to the bottom of the groove, bond the fireproof sealing strip into the fireproof block and press the reinforcement strip tightly.

[0033] By adopting the above technical scheme, the door bottom sealing device prepared by the preparation method has the following advantages, namely, smoke is not easy to come out from the door bottom, the fire prevention effect is good, and the preparation method has simple procedures, convenient production and low production cost.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The fireproof block fills the gap between the door bottom and the ground, smoke or flames are not easy to come out from the gap, the fireproof effect is good, the reinforcement card strip enhances the structural strength of the fireproof block, the fireproof sealing strip enhances the sealing between the door bottom and the fireproof block, and the flame-retardant fireproof cloth reduces the friction between the fireproof block and the ground, making it more convenient to open and close the door;

[0036] 2. A sink groove is opened in the groove, and the reinforcement strip is completely embedded in the sink groove. The bottom of the groove is a flush horizontal surface, which makes it more convenient to bond the fireproof sealing strip;

[0037] 3. The outer surface of the reinforcement card strip is provided with spikes, and after the spikes penetrate into the fireproof block, the connection firmness between the reinforcement card strip and the fireproof block is enhanced, and the fireproof block and the reinforcement card strip are not easily separated from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the first embodiment of the door bottom sealing device of the present application.

[0039] Figure 2 It is a structural schematic diagram of the second embodiment of the door bottom sealing device of the present application.

[0040] Figure 3 It is a structural schematic diagram of the third embodiment of the door bottom sealing device of the present application.

[0041] Figure 4 It is a schematic diagram of the structure of the fireproof block in the third embodiment of the door bottom sealing device of the present application.

[0042] Figure 5 It is a flow chart of the method for preparing the door bottom sealing device of the present application.

[0043] Explanation of the reference numerals: 1. Fireproof block; 11. Groove; 111. Sink; 2. Reinforcement strip; 21. Spike; 3. Fireproof sealing strip; 4. Flame-retardant fireproof cloth; 5. Door body. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1-5 This application is described in further detail.

[0045] The embodiment of the present application discloses a door bottom sealing device.

[0046] Example 1

[0047] Reference Figure 1The door bottom sealing device includes a fireproof block 1, a reinforcement card strip 2, a fireproof sealing strip 3 and a flame retardant fireproof cloth 4. The fireproof block 1 is made of flexible foam insulation rubber. The cross-sections on both sides of the fireproof block 1 are right triangles, and the cross-section of the entire fireproof block 1 is trapezoidal. The lower bottom length of the fireproof block 1 is between 70-80 mm, the upper bottom length of the fireproof block 1 is between 40-50 mm, the height of the fireproof block 1 is 30 mm, and the four corners of the fireproof block 1 are designed to be arc-shaped.

[0048] The outer surface of the fireproof block 1 is coated with strong glue and an adhesive layer is formed. The thickness of the adhesive layer is between 0.08-0.1 mm, wherein the strong glue is specifically a polyurethane adhesive. The flame retardant fireproof cloth 4 is wrapped on the outer surface of the fireproof block 1 through the adhesive layer formed by the strong glue, thereby reducing the friction between the fireproof block 1 and the ground, making it more convenient to open and close the door. The thickness of the flame retardant fireproof cloth 4 is 0.3 mm (in other embodiments, the thickness of the flame retardant fireproof cloth 4 can also be 0.1 mm, 0.2 mm or 0.4 mm). The flame retardant fireproof cloth 4 can be made of glass fiber fireproof cloth with a higher flame retardancy level, basalt fiber fireproof cloth, etc.

[0049] The bottom of the fireproof block 1 is designed as a plane parallel to the ground. A groove 11 adapted to the door bottom is vertically opened downward on the upper surface of the fireproof block 1, wherein the opening depth of the groove 11 is between 23-25 ​​mm. A plurality of reinforcement strips 2 are provided and are embedded in the groove 11 at intervals, which serves to enhance the structural strength of the fireproof block 1. The reinforcement strips 2 are fixed integrally in a U shape, and the lower surface of the horizontal section of the reinforcement strips 2 is in contact with the bottom of the groove 11. The reinforcement strips 2 are made of hard metal, which can be specifically The stainless steel clip strip has a thickness of 0.5 mm (in other embodiments, the thickness of the reinforcement clip strip 2 can also be 0.3 mm, 0.4 mm, 0.6 mm or 0.7 mm). The top ends of the two vertical sections of the reinforcement clip strip 2 press the top edge of the flame retardant and fireproof cloth 4, thereby effectively preventing the top edge of the flame retardant and fireproof cloth 4 from separating from the fireproof block 1. The two vertical sections of the reinforcement clip strip 2 are adapted to be clamped on both sides of the lower end of the door bottom, and the door bottom is wrapped through the lower end of the fireproof block 1.

[0050] The bottom of the groove 11 is coated with strong glue to form an adhesive layer, wherein the upper surface of the horizontal section of the reinforcement strip 2 is also coated with strong glue to form an adhesive layer, and the thickness of the adhesive layer is between 0.08-0.1 mm, wherein the strong glue is specifically an epoxy resin adhesive (which can bond metal to most non-metallic materials).

[0051] The fireproof sealing strip 3 is laid on the bottom of the groove 11 and bonded to the groove 11 through an adhesive layer. A portion of the fireproof sealing strip 3 is bonded to the horizontal section of the reinforcement strip 2, and a plurality of spaced reinforcement strips 2 are pressed tightly. When the fireproof sealing strip 3 is laid at the interval between two adjacent reinforcement strips 2, the fireproof sealing strip 3 is pressed downward so that another portion of the fireproof sealing strip 3 is bonded to the bottom of the groove 11.

[0052] Among them, the thickness of the fireproof sealing strip 3 is 2 mm (in other embodiments, the thickness of the fireproof sealing strip 3 can also be 1 mm, 3 mm or 4 mm), the width of the fireproof sealing strip 3 is consistent with the width of the horizontal section of the reinforcement card strip 2, and the fireproof sealing strip 3 is specifically made of expandable graphite as the main raw material. When exposed to high temperature, it can quickly expand and seal the gap between the fireproof block 1 and the door bottom, and is a good fireproof sealing material for construction.

[0053] The implementation principle of Example 1 is as follows: the groove 11 on the fireproof block 1 wraps the bottom of the door, and the plane at the bottom of the fireproof block 1 contacts the ground, thereby filling the gap between the bottom of the door and the ground, making it difficult for smoke or flames to escape from the gap, and having a good fireproofing effect. After the fireproof block 1 is wrapped with the flame-retardant fireproof cloth 4, when the fireproof door is opened and closed, the friction between the fireproof block 1 and the ground is reduced, and the door opening and closing is more convenient. In addition, the wear degree of the plane at the bottom of the fireproof block 1 can be reduced, thereby extending the service life of the fireproof block 1. At the same time, the fireproof cloth 4 can be added to After the reinforcement strip 2 is embedded in the groove 11 of the fireproof block 1, not only the structural strength of the fireproof block 1 is enhanced, but also the reinforcement strip 2 has a certain elasticity, and can be more firmly wrapped around the lower end of the door bottom. The reinforcement strips 2 are arranged at intervals. After the fireproof sealing strip 3 is installed at the bottom of the groove 11 and the reinforcement strip 2 is pressed, it not only prevents the reinforcement strip 2 from detaching from the groove 11, but also can fill the gap between two adjacent reinforcement strips 2, so that the sealing between the fireproof block 1 and the door bottom is better, thereby making the fire prevention effect better.

[0054] Example 2

[0055] Reference Figure 2 The difference between this embodiment and embodiment 1 is that the cross-sections of the fireproof block 1 on both sides are semicircular, and the cross-section of the entire fireproof block 1 is elliptical.

[0056] The implementation principle of Example 2 is: when the cross-sections on both sides of the fireproof block 1 are semicircular, if there are impurities or stones on the ground, the arc surfaces on both sides of the fireproof block 1 have a certain distance from the ground. When opening and closing the door, impurities or stones are not easy to get stuck on both sides of the fireproof block 1, making it difficult for the two sides of the fireproof block 1 close to the opening end of the groove 11 to be torn apart.

[0057] Example 3

[0058] Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that a plurality of U-shaped recesses 111 are arranged at intervals in the groove 11, and the depth of the recesses 111 is the thickness of the reinforcement strip 2, i.e., 0.5 mm. The reinforcement strip 2 is adapted to be embedded in and clamped in the recesses 111, and the upper surface of the horizontal section of the reinforcement strip 2 is on the same horizontal plane as the bottom of the groove 11, and spikes 21 are arranged at intervals on the outer surface of the reinforcement strip 2, wherein the spikes 21 are integrally formed and fixed with the outer surface of the reinforcement strip 2, and the spikes 21 penetrate into the inner side wall and the bottom wall of the groove 11.

[0059] The implementation principle of Example 3 is as follows: the reinforcement strip 2 is embedded in the groove 111 and does not protrude from the surface of the bottom of the groove 11, so that there is no gap between the spacing distance between the two reinforcement strips 2 and the bottom of the groove 11. It is more convenient to fix the fireproof sealing strip 3 with strong glue, and it can also further improve the sealing between the fireproof block 1 and the door bottom, and the fireproof effect is better. Moreover, after the nail 21 is inserted into the groove 11, the structural firmness between the reinforcement strip 2 and the fireproof block 1 is enhanced, so that the reinforcement strip 2 and the fireproof block 1 are not easy to separate from each other, and the structural stability and firmness are better.

[0060] The present application also discloses a door. Figure 1 The door includes a door body 5 and the door bottom sealing device as described above, and the door bottom sealing device is assembled at the bottom of the door body 5.

[0061] The implementation principle of a door in an embodiment of the present application is as follows: after a door bottom sealing device is installed at the bottom of the door body 5, there is no large gap between the lower end of the door body 5 and the ground. When a fire occurs, smoke and flames are not easy to emerge from under the door, and the fire prevention effect is good.

[0062] The present application also discloses a method for preparing a door bottom sealing device, referring to Figure 1 and Figure 5 , a method for preparing a door bottom sealing device, which is used to prepare the door bottom sealing device as described above, and the preparation method specifically comprises the following steps:

[0063] Step S1: Extruding a long strip of fireproof block 1 by an extruder;

[0064] Step S2: cutting the fireproof block 1 into an appropriate length according to the width of the door;

[0065] Step S3: applying strong glue on the outer surface of the fireproof block 1, and bonding the flame retardant fireproof cloth 4 to the outer surface of the fireproof block 1;

[0066] Step S4: embedding a plurality of pre-prepared reinforcement strips 2 into the groove 11 of the fireproof block 1;

[0067] Step S5: Apply strong glue on the bottom of the groove 11, and bond the fireproof sealing strip 3 into the fireproof block 1 and press the reinforcement strip 2 tightly.

[0068] The door bottom sealing device prepared by the preparation method can prevent smoke from escaping from the door bottom easily, and has good fire prevention effect. In addition, the preparation process is simple and the production is convenient.

[0069] 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 door bottom sealing device, characterized in that: It comprises a fireproof block (1), a reinforcement card strip (2), a fireproof sealing strip (3) and a flame retardant fireproof cloth (4); The flame retardant fireproof cloth (4) is wrapped around the outer surface of the fireproof block (1); a plane is provided at the bottom of the fireproof block (1); a groove (11) adapted to the door bottom is provided on the upper surface of the fireproof block (1); a plurality of reinforcement strips (2) are provided and are embedded in the groove (11) at intervals; the reinforcement strips (2) are U-shaped; the fireproof sealing strip (3) is provided at the bottom of the groove (11) and presses the reinforcement strips (2); the reinforcement strips (2) are adapted to be clamped at the lower end of the door bottom and wrap the door bottom; The top of the flame retardant fireproof cloth (4) is wound around the top of the fireproof block (1) until the end is located in the groove (11); the reinforcing strip (2) has a certain elasticity, and the top ends of the two vertical sections of the reinforcing strip (2) press the top edge of the flame retardant fireproof cloth (4) tightly; The outer surface of the reinforcement clip (2) is provided with spikes (21) at intervals, and the spikes (21) penetrate into the inner side wall and the bottom wall of the groove (11), with the tips of the spikes (21) facing downwards.

2. The door bottom sealing device according to claim 1, characterized in that: The thickness of the reinforcement strip (2) is between 0.3 and 0.7 millimeters, and the reinforcement strip (2) is made of hard metal.

3. The door bottom sealing device according to claim 1, characterized in that: The outer surface of the fireproof block (1) is coated with strong glue and forms an adhesive layer, and the flame-retardant fireproof cloth (4) is bonded to the outer surface of the fireproof block (1) via the adhesive layer.

4. The door bottom sealing device according to claim 3, characterized in that: The thickness of the flame retardant fireproof cloth (4) is between 0.1 and 0.4 millimeters, and the thickness of the fireproof sealing strip (3) is between 1 and 4 millimeters.

5. The door bottom sealing device according to claim 1, characterized in that: The bottom of the groove (11) is coated with strong glue and forms an adhesive layer, and the fireproof sealing strip (3) is bonded to the fireproof block (1) via the adhesive layer.

6. The door bottom sealing device according to claim 1, characterized in that: The fireproof block (1) is made of flexible foam heat-insulating rubber, and the cross-sections of the fireproof block (1) on both sides are semicircular, or the cross-sections of the fireproof block (1) on both sides are right triangles.

7. The door bottom sealing device according to claim 1, characterized in that: A plurality of U-shaped recessed grooves (111) are arranged at intervals in the recessed groove (111), the reinforcing clip strip (2) is clipped into the recessed groove (111), and the upper surface of the horizontal section of the reinforcing clip strip (2) is on the same horizontal plane as the bottom of the recessed groove (11).

8. A door, characterized in that: It comprises a door body (5) and a door bottom sealing device according to any one of claims 1 to 7, wherein the door bottom sealing device is mounted on the bottom of the door body (5).

9. A method for preparing a door bottom sealing device, characterized in that: Used to prepare a door bottom sealing device as described in any one of claims 1 to 8, the preparation method specifically comprises the following steps: Step 1: Extruding a long strip of fireproof block (1) through an extruder; Step 2: Cutting the fireproof block (1) into an appropriate length according to the width of the door; Step 3: Applying strong glue on the outer surface of the fireproof block (1), and bonding the flame retardant fireproof cloth (4) to the outer surface of the fireproof block (1); Step 4: Embedding a plurality of pre-prepared reinforcement strips (2) in the groove (11) of the fireproof block (1); Step 5: Applying strong glue on the bottom of the groove (11), bonding the fireproof sealing strip (3) in the fireproof block (1) and pressing the reinforcement strip (2) tightly.

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