Wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions

Abstract

The application discloses a wood-plastic composite sandwich decorative plate with fire extinguishing and flame-retardant functions, and relates to the technical field of building materials.The wood-plastic composite sandwich decorative plate comprises a decorative plate body, connecting assemblies are arranged on the two sides of the decorative plate body and used for fixing adjacent decorative plates, a communicating assembly used for circulating flame retardant is arranged in a first mounting groove, the communicating assembly is arranged between multiple layers of flame-retardant rock plates, the wood-plastic composite sandwich decorative plate is provided with the decorative plate with the flame-retardant circulating effect, the communicating assembly is arranged between the multiple layers of flame-retardant rock plates, multiple connecting pipes are fixedly connected between the communicating pipes, multiple liquid discharge holes for facilitating the outflow of the flame retardant are formed in the surface of the connecting pipes, a limiting hole matched with a limiting head is formed in the end of the connecting plate away from the communicating pipe, and the flame retardant can be continuously added through the feeding pipe after being volatilized for a long time, which is relatively convenient; the connecting pipes between the multiple decorative plates are fixed to further stabilize the decorative plates, the flame retardant is dispersed to the whole decorative plate and the building, and the effect of flame retardation and fire extinguishing can be fully played when a fire occurs.

Description

Technical Field

[0001] This invention relates to the field of building materials technology, specifically to a wood-plastic composite sandwich decorative board with fire extinguishing and flame retardant functions. Background Technology

[0002] Decorative panels are a general term for all types of boards, mainly including: plywood, decorative panels, MDF, engineered wood, particleboard, fireproof board, gypsum board, PVC board, aluminum composite panels, aluminum composite panels, and 3D panels. Gypsum board has excellent non-combustibility, heat insulation, and sound insulation properties, as well as excellent durability and strength, making it highly utilized. However, gypsum board has poor ventilation, is prone to mold growth inside buildings, and may produce radon and other substances harmful to human health and the environment.

[0003] The following problems exist in the existing technology:

[0004] In recent years, many people have attempted to use wood-plastic composite panels made from plywood as base materials, which are building boards with good ventilation and low environmental pollutant emissions. However, wood-plastic decorative panels made primarily of plywood have lower water resistance, wear resistance, and durability than gypsum board, and are also prone to catching fire. Therefore, we propose a wood-plastic composite sandwich decorative panel with fire extinguishing and flame retardant functions to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a wood-plastic composite sandwich decorative board with fire extinguishing and flame retardant functions to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This invention provides a wood-plastic composite sandwich decorative panel with fire extinguishing and flame retardant functions, comprising a decorative panel body, a first mounting groove for installing flame retardant components within the decorative panel, connecting components for fixing adjacent decorative panels on both sides of the decorative panel, a communicating component for the flow of flame retardant within the first mounting groove, the flame retardant components comprising multiple layers of flame retardant slabs, the communicating component being disposed between the multiple layers of flame retardant slabs, a connecting seat for connecting adjacent decorative panels fixedly connected to one side of the decorative panel, and a matching connecting groove on the side of the decorative panel away from the connecting seat. The connecting seat is slidably connected to the wall of the connecting groove. The first mounting groove wall is fixedly connected with a plurality of guide posts for stabilizing the flame-retardant rock slab. The plurality of guide posts are evenly distributed along the edge of the decorative panel. The flame-retardant rock slab is slidably connected to the wall of the first mounting groove around its perimeter. The flame-retardant rock slab has a plurality of matching first guide grooves on both sides near the guide posts. The guide posts are slidably connected to the wall of the first guide groove. The surface of the flame-retardant rock slab has a plurality of threaded holes for connecting other rock slabs. The plurality of threaded holes are evenly distributed among the flame-retardant rock slabs. The multiple layers of flame-retardant rock slabs are fixedly connected by bolts.

[0008] Preferably, a sealing plate for closing the overall device is provided at the opening of the first mounting groove. Both the sealing plate and the decorative plate have multiple fixing holes for connecting the two on the side near the sealing plate. The multiple fixing holes are evenly distributed on the surface of the decorative plate. The sealing plate and the decorative plate are fixedly connected by bolts.

[0009] Preferably, the connecting component includes multiple connecting pipes for the flow of flame retardant. The two ends of the connecting pipes extend through the decorative panel to the outside of the panel. The multiple connecting pipes are evenly distributed along the height direction of the decorative panel. Multiple connecting pipes are fixedly connected between the connecting pipes. The multiple connecting pipes are evenly distributed along the length direction of the connecting pipes. Multiple drainage holes are opened on the surface of the connecting pipes to facilitate the flow of flame retardant.

[0010] Preferably, the plurality of drainage holes are evenly distributed along the length of the connecting pipe, and a feed pipe for adding flame retardant is fixedly connected to the top of one of the connecting pipes near the top of the decorative panel. The top of the feed pipe extends through the decorative panel to the outside of the panel, and a sealing cap for sealing itself is threaded to one end of the feed pipe outside the panel. The feed pipe, the connecting pipe and the connecting pipe are connected.

[0011] Preferably, the connecting assembly includes a fixing frame for connecting multiple connecting pipes. One side of the fixing frame is fixedly connected to the bottom of the connecting groove. The multiple fixing frames are evenly distributed along the edge of the decorative panel. The fixing frames are sleeved on the outside of the connecting pipes but do not contact them.

[0012] Preferably, the fixed frame has multiple through-holes, which are evenly distributed around the axis of the fixed frame. The wall of each hole is fixedly connected to a fixed sleeve for stabilizing the telescopic spring, and one end of the telescopic spring is fixedly connected to the bottom of the inner cavity of the fixed sleeve.

[0013] Preferably, the other end of the telescopic spring is provided with a limiting head for fixing the other connecting pipes. The end of the limiting head near the telescopic spring is provided with a receiving groove. The end of the telescopic spring near the limiting head is fixedly connected to the bottom of the receiving groove. The end of the connecting pipe near the fixing frame is provided with multiple guide holes to facilitate the entry and exit of the limiting head.

[0014] Preferably, the outer surface of the limiting head away from the fixed frame is slidably connected to the wall of the guide hole, and the inner wall of the connecting pipe near the guide hole is provided with a plurality of second guide grooves to facilitate the entry of the connecting plate. The side of the connecting seat near the connecting pipe is provided with a plurality of second mounting grooves that match the fixed frame, and the wall of the second mounting groove is provided with a plurality of sleeve grooves that match the fixed sleeve.

[0015] Preferably, the plurality of sleeve grooves are evenly distributed around the axis of the connecting pipe, the outer wall of the fixing frame is slidably connected to the wall of the second mounting groove, the fixing sleeve is slidably connected to the inner wall of the sleeve groove, and the end of the connecting pipe away from the fixing frame is fixedly connected to a plurality of connecting plates that match the second guide groove.

[0016] Preferably, the end of the connecting plate away from the connecting pipe has a limiting hole that matches the limiting head. The limiting head is slidably connected to the wall of the limiting hole. The inner wall of the connecting pipe is fixedly connected with a plurality of sealing rings for improving its sealing performance. The outer wall of the sealing ring has a plurality of grooves to facilitate its deformation.

[0017] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0018] This invention features decorative panels with flame retardant flow properties. A connecting assembly is positioned between multiple layers of flame-retardant rock slabs. Multiple connecting pipes are fixedly connected between the connecting pipes, each with multiple drainage holes on its surface to facilitate flame retardant flow. A limiting head is provided at the other end of a telescopic spring to secure the remaining connecting pipes. A limiting hole matching the limiting head is provided at the end of the connecting plate away from the connecting pipe. Multiple sealing rings are fixedly connected to the inner wall of the connecting pipes to enhance their sealing performance, thereby improving the overall flame retardancy of the building. Furthermore, after prolonged use and evaporation of the flame retardant, it can be conveniently added through the feed pipe. The fixed connecting pipes between the multiple decorative panels further stabilize the panels, dispersing the flame retardant between the decorative panels and the building, ensuring that it can effectively retard and extinguish fires in the event of a fire, thus improving safety. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram showing the location of the flame-retardant rock panel of the present invention;

[0022] Figure 3 This is a schematic diagram showing the location of the connecting components of the present invention;

[0023] Figure 4 This is the invention Figure 3 Enlarged structural diagram at point B;

[0024] Figure 5 This is the invention Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 This is a schematic diagram of the interconnecting component structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the connecting pipe structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the connection component structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the fixed frame structure of the present invention;

[0029] In the picture:

[0030] 1. Decorative panel; 11. First mounting groove; 12. Enclosed plate; 13. Fixing hole; 14. Connecting seat; 15. Connecting groove; 16. Guide post; 2. Flame-retardant component; 21. Flame-retardant rock slab; 22. Connecting groove; 23. First guide groove; 24. Threaded hole; 3. Connecting component; 31. Connecting pipe; 32. Connecting pipe; 33. Drain hole; 34. Feed pipe; 35. Sealing cover; 4. Connecting component; 41. Fixing frame; 42. Mounting hole; 43. Fixing sleeve; 44. Telescopic spring; 45. Limiting head; 46. Receiving groove; 47. Second guide groove; 48. Guide hole; 49. Second mounting groove; 491. Sleeve groove; 492. Connecting plate; 493. Limiting hole; 494. Sealing ring. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0032] Please see Figures 1-9 This invention provides a wood-plastic composite sandwich decorative panel with fire extinguishing and flame retardant functions, including a decorative panel body 1. Please refer to the following for details. Figure 1 , Figure 2 and Figure 3 As shown, a first mounting groove 11 for installing flame-retardant components 2 is provided in the decorative panel 1. Connecting components 4 for fixing adjacent decorative panels 1 are provided on both sides of the decorative panel 1. A connecting component 3 for flowing flame retardant is provided in the first mounting groove 11. The flame-retardant component 2 includes multiple layers of flame-retardant rock slabs 21. The connecting component 3 is provided between the multiple layers of flame-retardant rock slabs 21. The flowing flame retardant (magnesium hydroxide) provided between the flame-retardant rock slabs 21 can further improve the overall fire extinguishing and flame-retardant effect.

[0033] Please refer to the following for details on securing the entire device. Figure 3 , and 5 and Figure 6 As shown, a connecting seat 14 for connecting adjacent decorative panels 1 is fixedly connected to one side of the decorative panel 1. A matching connecting groove 15 is provided on the side of the decorative panel 1 away from the connecting seat 14. The connecting seat 14 is slidably connected to the groove wall of the connecting groove 15. A plurality of guide posts 16 for stabilizing the flame-retardant rock slab 21 are fixedly connected to the groove wall of the first mounting groove 11. The plurality of guide posts 16 are evenly distributed along the edge of the decorative panel 1. The flame-retardant rock slab 21 is slidably connected to the groove wall of the first mounting groove 11 around its perimeter. A plurality of matching first guide grooves 23 are provided on both sides of the flame-retardant rock slab 21 near the guide posts 16. The guide posts 16 are slidably connected to the groove wall of the first guide groove 23. The surface of the flame-retardant rock slab 21 is... Multiple threaded holes 24 are provided to connect the other rock slabs. The multiple threaded holes 24 are evenly distributed among the flame-retardant rock slabs 21. The multiple flame-retardant rock slabs 21 are fixedly connected by bolts. A sealing plate 12 for sealing the whole device is provided at the opening of the first mounting groove 11. Multiple fixing holes 13 for connecting the two are provided on the side of the sealing plate 12 and the decorative plate 1 near the sealing plate 12. The multiple fixing holes 13 are evenly distributed on the surface of the decorative plate 1. The sealing plate 12 and the decorative plate 1 are fixedly connected by bolts. The multiple flame-retardant rock slabs 21 are placed in the first mounting groove 11, fit into the guide post 16, and are evenly distributed in the decorative plate 1 to improve the overall flame retardancy and fire resistance.

[0034] To further enhance the overall flame retardancy and fire extinguishing properties of the device, please refer to the following: Figure 3 , Figure 4 and Figure 7 As shown, the connecting component 3 is provided with multiple connecting pipes 31 for the flow of flame retardant. Both ends of the connecting pipes 31 extend through the decorative panel 1 to the outside of the panel. The multiple connecting pipes 31 are evenly distributed along the height direction of the decorative panel 1. Multiple connecting pipes 32 are fixedly connected between the connecting pipes 31. The multiple connecting pipes 32 are evenly distributed along the length direction of the connecting pipes 31. Multiple drainage holes 33 are opened on the surface of the connecting pipes 32 to facilitate the outflow of flame retardant. The multiple drainage holes 33 are evenly distributed along the length direction of the connecting pipes 32. A feed pipe 34 for adding flame retardant is fixedly connected to the top of one of the connecting pipes 31 near the top of the decorative panel 1. The top of the feed pipe 34 extends through the decorative panel 1 to the outside of the panel. A sealing cap 35 for sealing itself is threaded to one end of the feed pipe 34 outside the panel. 34. The connecting pipe 31 and the connecting pipe 32 are connected. Multiple connecting pipes 31 are provided between the decorative panel 1 and the flame-retardant rock panel 21. The sealing cover 35 is opened, and flame retardant (magnesium hydroxide) is added from the feed pipe 34. The flame retardant enters from the feed pipe 34, flows in the connecting pipe 31, and enters the flame-retardant rock panel 21 from the drain hole 33 of the connecting pipe 32. The surface of the flame-retardant rock panel 21 has a connecting groove 22, which is easy to deform and absorb a large amount of flame retardant. After the flame retardant is added, it can form a glassy or stable foam covering layer at high temperature, which isolates oxygen and has the functions of heat insulation, oxygen isolation, and preventing combustible gas from escaping outward, thereby achieving the purpose of flame retardant fire extinguishing. After long-term use, the flame retardant will volatilize and can be added again through the feed pipe 34.

[0035] To ensure the flame retardant can circulate throughout the entire coverage area of ​​the building's decorative panel 1, please refer to the following: Figure 5 , Figure 8As shown in the figure, a fixing frame 41 for connecting multiple connecting pipes 31 is provided in the connecting assembly 4. One side of the fixing frame 41 is fixedly connected to the bottom of the connecting groove 15. Multiple fixing frames 41 are evenly distributed along the edge of the decorative panel 1. The fixing frame 41 is sleeved on the outside of the connecting pipe 31 without contacting it. Multiple through mounting holes 42 are opened in the fixing frame 41. The multiple mounting holes 42 are evenly distributed around the axis of the fixing frame 41. The wall of the mounting hole 42 is fixedly connected to the fixing sleeve 43 for stabilizing the telescopic spring 44. One end of the telescopic spring 44 is fixedly connected to the bottom of the inner cavity of the fixing sleeve 43. The other end of the telescopic spring 44 is provided with a limiting head 45 for fixing the other connecting pipes 31. The limiting head 45 is close to the telescopic spring 44. One end of the connecting pipe 31 has a receiving groove 46. The end of the telescopic spring 44 near the limiting head 45 is fixedly connected to the bottom of the receiving groove 46. The end of the connecting pipe 31 near the fixed frame 41 has multiple guide holes 48 to facilitate the entry and exit of the limiting head 45. The outer surface of the end of the limiting head 45 away from the fixed frame 41 is slidably connected to the wall of the guide hole 48. The inner wall of the end of the connecting pipe 31 near the guide hole 48 has multiple second guide grooves 47 to facilitate the entry of the connecting plate 492. The side of the connecting seat 14 near the connecting pipe 31 has multiple second mounting grooves 49 that match the fixed frame 41. The wall of the second mounting groove 49 has multiple sleeve grooves 491 that match the fixed sleeve 43. The multiple sleeve grooves 491 are arranged around the axis of the connecting pipe 31. The components are evenly distributed. The outer wall of the fixed frame 41 is slidably connected to the wall of the second mounting groove 49. The fixed sleeve 43 is slidably connected to the inner wall of the sleeve groove 491. The end of the connecting pipe 31 away from the fixed frame 41 is fixedly connected to multiple connecting plates 492 that match the second guide groove 47. The end of the connecting plate 492 away from the connecting pipe 31 is provided with a limiting hole 493 that matches the limiting head 45. The limiting head 45 is slidably connected to the wall of the limiting hole 493. The inner wall of the connecting pipe 31 is fixedly connected to multiple sealing rings 494 for improving its sealing performance. The outer ring wall of the sealing ring 494 is provided with multiple grooves to facilitate its deformation. When the decorative panel 1 is inserted for splicing and fixing, the connecting seat 14 enters the mass connecting groove 15. At this time, the connecting groove 15... The bottom fixing frame 41 will enter the second mounting groove 49 of the connecting seat 14. Its limiting head 45 will be squeezed by the surface of the connecting plate 492. The limiting head 45 will squeeze the bottom telescopic spring 44 into the fixing sleeve 43. When the connecting plate 492 passes through the second guide groove 47, its limiting hole 493 coincides with the guide hole 48. At this time, the limiting head 45 will be pushed out by the elastic force of the bottom telescopic spring 44 and enter the limiting hole 493 for fixing. This will connect and fix the connecting pipe 31 between adjacent decorative panels 1 and further stabilize the connection between the decorative panels 1. The connecting pipe 31 between multiple decorative panels 1 is connected, dispersing the flame retardant between the overall decorative panel 1 and the building.

[0036] Working principle

[0037] In actual use, the multi-layer flame-retardant rock slab 21 is placed in the first mounting groove 11 and inserted along the guide column 16, evenly distributed within the decorative panel 1 to enhance the overall flame retardancy and fire resistance. To further improve the overall flame retardancy and provide a certain degree of fire extinguishing capability, multiple connecting pipes 31 are placed between the decorative panel 1 and the flame-retardant rock slab 21. The sealing cover 35 is opened, and flame retardant (magnesium hydroxide) is added through the feed pipe 34. The flame retardant enters through the feed pipe 34 and flows into the connecting pipes 31. The liquid flows through the drain hole 33 of the connecting pipe 32 and enters the flame-retardant rock slab 21. The surface of the flame-retardant rock slab 21 has a connecting groove 22, which facilitates deformation and absorption of a large amount of flame retardant. After the flame retardant is added, it forms a glassy or stable foam covering layer at high temperatures, isolating oxygen and providing heat insulation, oxygen isolation, and preventing the escape of combustible gases, thereby achieving the purpose of flame retardant extinguishing. Furthermore, after prolonged use, the flame retardant evaporates and can be added again through the feed pipe 34, which is convenient and... To allow the flame retardant to circulate throughout the entire building decorative panel 1, when the decorative panel 1 is joined and fixed, the connecting seat 14 enters the mass connecting groove 15. At this time, the fixing frame 41 at the bottom of the connecting groove 15 enters the second mounting groove 49 of the connecting seat 14. Its limiting head 45 is squeezed by the surface of the connecting plate 492. The limiting head 45 squeezes the bottom telescopic spring 44 and enters the fixing position 493 for fixing. This connects and fixes the connecting pipe 31 between adjacent decorative panels 1. In addition, when the connecting plate 492 passes through the second guide groove 47 in the sleeve 43, its limiting hole 493 coincides with the guide hole 48. At this time, the limiting head 45 will pop out under the elastic force of the bottom telescopic spring 44 and enter the limiting hole to further stabilize the connection between the decorative panels 1. The connecting pipe 31 between multiple decorative panels 1 are connected, dispersing the flame retardant between the overall decorative panel 1 and the building, ensuring that it can fully play its role in flame retardant and fire extinguishing in the event of a fire, and improving the overall safety of the building.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wood-plastic composite sandwich decorative plate with fire extinguishing and flame retardant functions, characterized in that, The utility model provides a decorative plate (1) body, first installation groove (11) for installing fire -retardant component (2) is opened in decorative plate (1), both sides of decorative plate (1) are provided with the connecting component (4) for fixing adjacent decorative plate (1), the intercommunication component (3) for circulating fire -retardant is provided in first installation groove (11), fire -retardant component (2) includes multilayer fire -retardant rock slab (21), the intercommunication component (3) is arranged between multilayer fire -retardant rock slab (21), the intercommunication component (3) includes a plurality of intercommunication pipe (31) for fire -retardant circulation, both ends of intercommunication pipe (31) extend to the outside of the plate and pass through decorative plate (1), a plurality of intercommunication pipe (31) are evenly distributed along the height direction of decorative plate (1), a plurality of connecting pipes (32) are fixedly connected between intercommunication pipe (31), a plurality of connecting pipes (32) are evenly distributed along the length direction of intercommunication pipe (31), a plurality of liquid discharge holes (33) for facilitating the outflow of fire -retardant are formed in the surface of the connecting pipe (32), one side of the decorative plate (1) is fixedly connected with a connecting seat (14) for connecting adjacent decorative plates (1), one side of the decorative plate (1) away from the connecting seat (14) is provided with a connecting groove (15) matched therewith, the connecting seat (14) is slidably connected with the groove wall of the connecting groove (15), a plurality of guide columns (16) for stabilizing the fire -retardant rock slab (21) are fixedly connected with the groove wall of the first installation groove (11), a plurality of guide columns (16) are evenly distributed along the edge of the decorative plate (1), the fire -retardant rock slab (21) is slidably connected with the groove wall of the first installation groove (11) around, a plurality of first guide grooves (23) matched with the guide columns (16) are formed in the two sides of the fire -retardant rock slab (21) close to the guide columns (16), the guide columns (16) are slidably connected with the groove wall of the first guide grooves (23), a plurality of threaded holes (24) for connecting the remaining rock slabs are formed in the surface of the fire -retardant rock slab (21), a plurality of threaded holes (24) are evenly distributed between the fire -retardant rock slabs (21), and the multilayer fire -retardant rock slabs (21) are fixedly connected by bolts.

2. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 1, characterized in that, The first installation groove (11) is provided with a closing plate (12) for closing the overall device at the opening, a plurality of fixing holes (13) for connecting the closing plate (12) and the decorative plate (1) are formed in the surface of the closing plate (12) and the side of the decorative plate (1) close to the closing plate (12), a plurality of fixing holes (13) are evenly distributed on the surface of the decorative plate (1), and the closing plate (12) and the decorative plate (1) are fixedly connected by bolts.

3. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 1, characterized in that, A plurality of liquid discharge holes (33) are evenly distributed along the length direction of the connecting pipe (32), one intercommunication pipe (31) close to the top of the decorative plate (1) is fixedly connected with a feeding pipe (34) for adding fire -retardant at the top, the feeding pipe (34) extends to the outside of the plate and passes through the decorative plate (1) at the top, a closing cover (35) for closing the feeding pipe (34) is threadedly connected with one end of the feeding pipe (34) outside the plate, and the feeding pipe (34), the intercommunication pipe (31) and the connecting pipe (32) are communicated.

4. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 1, characterized in that, The connecting assembly (4) comprises a fixed frame (41) for connecting multiple communication pipes (31), one side of the fixed frame (41) is fixedly connected with the bottom of the connecting groove (15), multiple fixed frames (41) are evenly distributed along the edge direction of the decorative plate (1), and the fixed frame (41) is sleeved on the outer surface of the communication pipe (31) without being in contact with the communication pipe (31).

5. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 4, characterized in that, Multiple mounting holes (42) are arranged in the fixed frame (41) and penetrate the fixed frame (41), multiple mounting holes (42) are evenly distributed around the axis of the fixed frame (41), the mounting hole (42) is fixedly connected with the fixed sleeve (43) for stabilizing the telescopic spring (44), and one end of the telescopic spring (44) is fixedly connected with the bottom of the inner cavity of the fixed sleeve (43).

6. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 5, characterized in that, The other end of the telescopic spring (44) is provided with a limiting head (45) for fixing the remaining communication pipe (31), the limiting head (45) is provided with a receiving groove (46) near one end of the telescopic spring (44), the other end of the telescopic spring (44) near the limiting head (45) is fixedly connected with the bottom of the receiving groove (46), and the end of the communication pipe (31) near the fixed frame (41) is provided with multiple guide holes (48) for facilitating the limiting head (45) to enter and exit.

7. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 6, characterized in that, The outer surface of the other end of the limiting head (45) away from the fixed frame (41) is in sliding connection with the hole wall of the guide hole (48), the inner wall of the end of the communication pipe (31) near the guide hole (48) is provided with multiple second guide grooves (47) for facilitating the connection plate (492) to enter, and the side of the connection seat (14) near the communication pipe (31) is provided with multiple second mounting grooves (49) matched with the fixed frame (41).

8. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 7, characterized in that, Multiple sleeve grooves (491) are evenly distributed around the axis of the communication pipe (31), the outer wall of the fixed frame (41) is in sliding connection with the groove wall of the second mounting groove (49), the fixed sleeve (43) is in sliding connection with the inner wall of the sleeve groove (491), and the end of the communication pipe (31) away from the fixed frame (41) is fixedly connected with multiple connection plates (492) matched with the second guide groove (47).

9. The wood-plastic composite sandwich decorative board with fire extinguishing and flame-retardant functions according to claim 8, characterized in that, The end of the connection plate (492) away from the communication pipe (31) is provided with a limiting hole (493) matched with the limiting head (45), the limiting head (45) is in sliding connection with the hole wall of the limiting hole (493), multiple sealing rings (494) for improving the sealing performance of the communication pipe (31) are fixedly connected to the inner wall of the communication pipe (31), and multiple grooves for facilitating deformation of the sealing ring (494) are arranged on the outer ring wall of the sealing ring (494).

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