Lightweight fire door with composite filling

Abstract

The utility model discloses a light fireproof door of composite filling structure, which is characterized by the following technical scheme: a door body is provided with a side plate and a door lock on the opening and closing side; the side plate is provided with filling holes opposite to the inside on the upper and lower sides of the door lock; a filling drawer and a sub-drawer are arranged corresponding to each filling hole and filled with filling bodies; a closing plate is arranged on the outside of each filling hole along a sliding rail; a handle is arranged on the outer surface of the closing plate; a protrusion is arranged on the lower end of the handle and is positioned by cooperating with a covered edge; the covered edge is arranged along the edge of the door body to prevent scratching and shield the opening; the structure is convenient for composite filling, feeding, maintenance and replacement in the upper and lower partitions, and can also consider fire resistance, heat insulation and smoke resistance; the partition configuration of the filling drawer and the sub-drawer improves the quality distribution of the door leaf, realizes lightweight and reliable opening and closing, and is suitable for new construction and reconstruction scenes.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and more specifically to a lightweight fire door with a composite filling structure. Background Technology

[0002] Existing lightweight fire doors mostly use a single, integral filling method. Once the material is installed, it is difficult to adjust the area according to the needs of the site. When it is necessary to replenish or replace the material, the door leaf often needs to be disassembled, resulting in high maintenance costs and long operation time. The existing fire door, as shown in the patent application number CN211573276U, "A fire door that facilitates the replacement of internal fireproof materials", allows for the replacement of the fireproof filling layer inside the door through the disassembly and assembly of the outer / inner plate and screws, which improves maintainability; however, the replacement path requires disassembling the panel, which is a rather cumbersome process. Utility Model Content

[0003] The purpose of this utility model is to provide a lightweight fire door with a composite filling structure in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: This utility model proposes a lightweight fire door with a composite filling structure, including a door body, a side plate and a door lock installed on the vertical side of the door body for opening and closing, and a pivot on the other side of the door body. The side panel has filling holes above and below the door lock, corresponding to the interior. A filling drawer and a secondary drawer are set at the positions opposite to each filling hole. The filling drawer and the secondary drawer are filled with filler to improve fire resistance and heat insulation performance. A locking plate for locking the drawer body is provided on the outside of each filling hole. A slide rail is provided between the closing plate and the side panel to guide the sliding of the closing plate relative to the side panel. The side panel has an edge trim along the edge of the door to prevent scratches.

[0005] As a preferred embodiment of this utility model, the filling drawer is positioned above the door lock and corresponds to the upper filling hole, while the secondary drawer is positioned below the door lock and corresponds to the lower filling hole.

[0006] As a preferred embodiment of this utility model, a handle is provided on the outer surface of the closing plate to facilitate the opening and closing operation of the closing plate along the slide rail.

[0007] As a preferred technical solution of this utility model, the lower end of the closing plate is provided with a protrusion, which engages or abuts with the edge to position the closing position and prevent the closing plate from coming off during vibration.

[0008] As a preferred technical solution of this utility model, the filling material is a fire-resistant and heat-insulating lightweight material, which can replenish or replace the filling drawer and the auxiliary drawer as needed.

[0009] The beneficial effects of this utility model are as follows: This utility model features filling holes on the side panels above and below the door lock, with corresponding filling drawers and secondary drawers, enabling composite filling in upper and lower sections. This facilitates the selection and combination of fillers according to different scenarios. The closing plates on the outer side of each filling hole open and close smoothly under the guidance of the slide rail, creating a passage for easy feeding, inspection, and replacement. The closing plates are equipped with handles for convenient operation and reduced maintenance. The protrusions at the lower end of the closing plates engage or abut with the edging, providing positioning and preventing detachment, ensuring reliable vibration resistance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the unassembled filling drawer of this utility model; Figure 2 This is a schematic diagram of the assembly of the filling drawer of this utility model; Figure 3 This is an enlarged schematic diagram of point A of this utility model; Figure 4 This is another view of the present invention; Figure 5 This is a schematic diagram of the filling drawer structure of this utility model.

[0011] Reference numerals: 1. Side panel; 2. Filler hole; 3. Door body; 4. Filler drawer; 5. Door lock; 6. Edge binding; 7. Pivot; 21. Slide rail; 31. Closing plate; 32. Handle; 33. Filler body; 34. Protrusion. Detailed Implementation Example 1

[0012] like Figures 1 to 5 As shown, this utility model proposes a lightweight fire door with a composite filling structure, including a door body 2 and a side plate 1 and a door lock 5 installed on the opening and closing side of the door body 2; the side plate 1 is provided on the opening and closing side of the door body 2, and the door lock 5 is installed in the middle area of ​​the side plate 1; filling holes 35 are provided on the door body 2, located above and below the door lock 5; corresponding to each filling hole 35, an upper filling drawer 3 and a lower auxiliary drawer 4 are provided inside the door body 2 for respectively accommodating filling materials 33; a closing plate 31 is provided on the outside of the filling holes 35, and the closing plate 31 moves along the door height direction through sliding cooperation with the slide rail 21 to open or cover the filling holes 35 on the door body 2; a handle 32 is provided on the outer surface of the closing plate 31; an edge band 6 is provided along the outer edge of the side plate 1, and a protrusion 34 is provided at the lower end of the closing plate 31. In the closed position, the protrusion 34 engages or abuts with the edge band 6 to position and prevent the closing plate 31 from falling off, while the edge band 6 is used to prevent scratches and cover the edges; During routine maintenance, hold handle 32 and pull the entire door out of the door body 2; replenish, replace, or compact and reshape the filling material 33 in the filling drawer 3 / sub-drawer 4 from the outside of the door; after completion, push the filling drawer 3 / sub-drawer 4 back into the filling hole 35 of the door body 2 along the original path, and make its end face basically flush with the outer surface of the door body 2; finally, push the closing plate 31 to reset, so that the protrusion 34 and the edge banding 6 cooperate to form positioning and anti-vibration and anti-dislodgement, and restore the shielding state; the above process does not require disassembling the door leaf, which is convenient for zonal maintenance. Example 2

[0013] The filling material 33 of the upper filling drawer 3 is a composite ratio of high temperature resistant inorganic fiber and foamed inorganic particles to improve the upper part's resistance to heat radiation and direct flame scouring, and to form a dense carbonized layer at high temperature to inhibit smoke penetration. The filling material 33 of the lower secondary drawer 4 is made of lightweight porous material to reduce the weight of the door leaf, improve the mass distribution of the lower part, enhance heat insulation, and reduce the load on the hinge side, which helps to ensure smooth opening and closing and shape stability. This partition is conducive to ensuring fire resistance and smoke prevention in the case of more intense heating in the upper part, while improving the overall reliability by reducing the weight of the lower part. The drawer-type maintenance makes it easy to replace the corresponding material independently without affecting the other partition. Example 3

[0014] The filling material 33 of the upper filling drawer 3 is made of porous inorganic material with low thermal conductivity, which emphasizes delaying the temperature rise of the unexposed surface and extending the heat insulation retention time, and is suitable for long-term fire resistance requirements. The filling material 33 of the lower secondary drawer 4 is made of inorganic fiber felt or granular composite material with good compressive resilience, emphasizing durability and vibration resistance, and maintaining the flatness of the door 2 and the stability of the fit clearance during frequent opening and closing and transportation vibration. This embodiment balances long-term use and temperature rise control, achieving differentiated performance under the same shape and assembly method by distributing the functions of different materials in the upper and lower parts.

[0015] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0016] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lightweight fire door with a composite filling structure, comprising a door body (2) and a side plate (1) and a door lock (5) installed on the opening and closing side of the door body (2), and a pivot (7) on the other side of the door body (2). Its features are, The side panel (1) has filling holes (35) corresponding to the interior above and below the door lock (5); a filling drawer (3) and a secondary drawer (4) are respectively set at the position opposite to each filling hole (35), and the filling drawer (3) and the secondary drawer (4) are filled with filler (33) for improving fire resistance and heat insulation performance; a locking drawer closing plate (31) is provided on the outside of each filling hole (35); a slide rail (21) is provided between the closing plate (31) and the side panel (1) to guide the sliding of the closing plate (31) relative to the side panel (1); the side panel (1) has a binding edge (6) along the edge of the door (2) to prevent scratches.

2. The lightweight fire door with a composite filling structure according to claim 1, characterized in that, The filling drawer (3) is positioned above the door lock (5) and corresponds to the filling hole (35) above it. The secondary drawer (4) is positioned below the door lock (5) and corresponds to the filling hole (35) below it.

3. A lightweight fire door with a composite filling structure according to claim 1, characterized in that, A handle (32) is provided on the outer surface of the closing plate (31) to facilitate the opening and closing operation of the closing plate (31) along the slide rail (21).

4. A lightweight fire door with a composite filling structure according to claim 1, characterized in that, The lower end of the closing plate (31) is provided with a protrusion (34), which engages or abuts with the edge (6) to position the closing position and prevent the closing plate (31) from coming off during vibration.

5. A lightweight fire door with a composite filling structure according to claim 1, characterized in that, The filler (33) is a fire-resistant and heat-insulating lightweight material, which can be used to replenish or replace the filler drawer (3) and the auxiliary drawer (4) as needed.

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