Fireproof high-temperature-resistant oriented strand board paving device

Abstract

The present application relates to the technical field of wood processing machinery, and discloses a fireproof and high-temperature-resistant oriented strand board paving device, which comprises a base and a liquid storage tank, the top of the base is fixedly connected with a paving bin, the top of the paving bin is fixedly connected with a second processing bin, the top of the second processing bin is fixedly connected with a first processing bin, the top of the first processing bin is provided with a discharging bin, the top of the base is provided with a conveying belt, the outside of the paving bin is fixedly connected with a fourth motor, the output end of the fourth motor is fixedly connected with a loosening roller, and the inside of the second processing bin is provided with a screening assembly. The fire-retardant additive in the liquid storage tank is uniformly sprayed onto the surface of the shavings through the spray head, the memory alloy heat-sensitive block of the fire-retardant assembly in the conveying roller senses the temperature and automatically releases the fire extinguishing agent, the raw material modification and the production process safety protection double fireproof design are formed, and the fireproof and high-temperature-resistant performance of the oriented strand board product is improved.

Description

Technical Field

[0001] This invention relates to the field of wood processing machinery technology, specifically to a fire-resistant and high-temperature resistant oriented strand board (OSB) laying device. Background Technology

[0002] Oriented strand board (OSB) is a type of engineered wood product made from wood shavings. It is formed by arranging the shavings in a specific direction and then hot-pressing them. Due to its excellent mechanical properties and cost-effectiveness, it is widely used in construction, furniture manufacturing, and many other fields. Fire-resistant and high-temperature resistant OSB is an improved product based on conventional OSB production. By adding flame-retardant components or using special processing techniques, it acquires fire-resistant and high-temperature resistant properties, making it suitable for applications with high fire safety requirements.

[0003] In the current production of fire-resistant and high-temperature resistant oriented strand board (OSB), the processing steps related to the installation are usually completed by multiple independent machines working in sequence. The core involves three major stages: raw material processing, flame retardant modification, and installation. In the raw material processing stage, an independent hammer crusher is used to crush the wood raw materials. The crushed material is then conveyed by a conveyor belt to an independent vibrating screen to screen the particle size. In the flame retardant modification stage, a separate mixing and modification chamber is set up. The screened shavings are sent into the chamber, and flame retardant additives are sprayed through the spray nozzles on the top of the chamber. At the same time, the mixing blades inside the chamber are activated to mix the shavings and achieve flame retardant treatment. The installation stage is achieved by an independent installation machine. The shavings are sent into the hopper of the installation machine by a conveyor belt. The spreading rollers below the hopper rotate and spread the shavings on the conveyor belt to form a preliminary shaving blank. Finally, a single pressure roller extrudes and shapes the blank.

[0004] Because existing technologies employ a multi-equipment, completely independent layout, materials need to be transferred between stages via long-distance conveyor belts. During transfer, wood shavings are not only susceptible to clumping due to conveyor belt speed fluctuations, but also prone to evaporation and loss of some flame-retardant additives due to prolonged exposure. Furthermore, the flame-retardant modification stage uses a mixing method to apply the additives, but the contact between wood shavings and the additives relies on paddle stirring. Some wood shavings are easily damaged by paddle pressure, and insufficient mixing leads to uneven adhesion of the flame-retardant additives, directly affecting the consistency of the fire resistance and high-temperature resistance of the finished boards. In addition, existing technologies lack a dedicated structure for removing metal impurities throughout the processing flow, allowing metal impurities mixed in with the wood raw materials to... As wood shavings pass through each piece of equipment, they not only scratch the conveyor belts and mixing blades, but also affect the purity of the green body during the laying process, ultimately reducing the mechanical properties of the finished board. Existing safety protection technologies only provide external guardrails for each independent piece of equipment, without considering the potential for localized overheating and smoldering of wood shavings during long-distance transport or accumulation in hoppers. The lack of a dedicated protective structure easily leads to safety hazards. At the same time, multiple independent pieces of equipment require separate production space, and the independent drive and control of each piece of equipment increases production energy consumption. Furthermore, the coordinated operation between equipment relies on manual adjustment of the operating parameters of each piece of equipment, making the operation process cumbersome and requiring a significant investment of manpower for equipment monitoring and maintenance, directly resulting in low production efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fire-resistant and high-temperature resistant oriented strand board (OSB) installation device, which solves the problems of particle caking during transport, uneven adhesion of flame retardant additives, inability to remove metal impurities, lack of local overheat protection, and low production efficiency caused by the independent layout of multiple devices in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fire-resistant and high-temperature resistant oriented strand board (OSB) laying device includes a base and a storage tank. A laying chamber is fixedly connected to the top of the base. A second processing chamber is fixedly connected to the top of the laying chamber. A first processing chamber is fixedly connected to the top of the second processing chamber. A feeding chamber is installed on the top of the first processing chamber. A conveyor belt is installed directly above the base. A fourth motor is fixedly connected to the outside of the laying chamber. A conveying roller is fixedly connected to the output end of the fourth motor. A screening component is installed inside the second processing chamber. A crushing component is installed inside the first processing chamber. A suction pump is fixedly connected to the top of the storage tank. A conveying pipe is fixedly connected to the output end of the suction pump. A rectangular tube is fixedly connected to the end of the conveying pipe away from the suction pump. Nozzles are fixedly connected to the bottom of each rectangular tube. A first frame, a second frame, and a third frame are sequentially fixedly connected to the top of the base. A cleaning component is installed inside the first frame. A conveying roller is rotatably connected to the middle of the base. A flame-retardant component is installed inside the conveying roller. A magnetic block is installed inside the first frame.

[0007] Preferably, the crushing assembly includes a first motor, which is fixedly connected to the outer wall of the first processing chamber. A first gear is fixedly connected to the output end of the first motor, and a second gear is rotatably connected to the outside of the first processing chamber. A rotating drum is fixedly connected to the ends of the first gear and the second gear away from the first motor, and teeth are uniformly fixedly connected to the outer wall of the rotating drum.

[0008] Preferably, the screening assembly includes a second motor, which is fixedly connected to the outer wall of the second processing chamber. An eccentric wheel is fixedly connected to the output end of the second motor. The second processing chamber is provided with a screen, and a rotating shaft is fixedly connected inside the screen. A feeding chute is fixedly connected to the middle of the second processing chamber, and a spring rod is fixedly connected between the screen and the second processing chamber.

[0009] Preferably, the cleaning component includes a scraper box, which is slidably connected to the middle of the first frame. Positioning blocks are uniformly fixedly connected to the inner wall of the scraper box, and positioning grooves are formed inside the magnetic blocks.

[0010] Preferably, the flame-retardant component includes a powder storage chamber, which is located inside the conveying roller. The conveying roller has release holes evenly distributed in the middle, and a shape memory alloy thermistor is installed inside the release holes.

[0011] Preferably, a first electric push rod is fixedly connected to the top of the first frame, and the magnetic block is fixedly connected to the telescopic end of the first electric push rod. A second electric push rod is fixedly connected to the top of the second frame, and a pressure block is fixedly connected to the output end of the second electric push rod. A third motor is fixedly connected to the outside of the third frame, and a first pressure roller is fixedly connected to the output end of the third motor.

[0012] Preferably, the conveying roller is rotatably connected inside the paving bin, the rectangular tube is fixedly connected directly below the second processing bin, and a second pressure roller is rotatably connected inside the third frame, with the first pressure roller meshing with the second pressure roller.

[0013] Preferably, the first gear meshes with the second gear, and the tooth head is located directly below the feeding hopper.

[0014] Preferably, the rotating shaft is rotatably connected to the inner wall of the second processing chamber, the outer wall of the eccentric wheel abuts against the bottom of the screen, and a material receiving port is fixedly connected to the side of the second processing chamber near the material feeding trough.

[0015] Preferably, the positioning block is slidably connected to the middle of the positioning groove, and a handle is fixedly connected to the outer wall of the scraper box.

[0016] This invention provides a fire-resistant and high-temperature resistant oriented strand board (OSB) installation device. It has the following beneficial effects: 1. In the process of shavings falling through the screen, the present invention uses a nozzle to evenly spray the flame retardant additive in the storage tank onto the surface of the shavings. In conjunction with the shape memory alloy thermosensitive block of the flame retardant component inside the conveyor roller, the fire extinguishing agent is automatically released based on the temperature. Compared with the existing technology that only relies on raw material modification to achieve fire prevention, this invention forms a dual fire prevention design of raw material modification and production process safety protection. This helps to improve the fire resistance and high temperature resistance of the finished oriented strand board, while reducing the safety hazards caused by local overheating during the production process and expanding the application scenarios of the product.

[0017] 2. This invention achieves wood raw material crushing through the combination of the rotating drum and toothed head of the crushing component, and completes the particle size screening of wood shavings by the vibration of the screen of the screening component. At the same time, it uses magnetic blocks to adsorb metal impurities and cleans them with the scraper box of the cleaning component. Compared with the existing technology where the wood shavings processing is scattered and the impurities are not completely removed, this invention can achieve synergistic processing of wood shavings crushing, screening and impurity removal, which helps to improve the uniformity and purity of wood shavings, providing a basic guarantee for the quality of subsequent directional paving, while reducing the efficiency loss caused by multiple equipment transfers.

[0018] 3. In this invention, the wood shavings are loosened by a loosening roller before being laid out. They are then initially compacted by the pressure blocks of the second frame, and then further compressed by the first and second pressure rollers of the third frame. Compared with the existing technology where the wood shavings are prone to clumping and the compaction method is singular, this invention can avoid the problem of wood shavings clumping. At the same time, the staged compaction method helps to protect the structure of the wood shaving blank, improve the uniformity of the blank density, and thus improve the structural stability and mechanical properties of the finished oriented strand board.

[0019] 4. This invention integrates crushing, screening, flame retardant modification, impurity removal, directional paving, compaction, and safety protection into one integrated system. The interconnected structure enables continuous operation. Compared to the existing technology with its multiple independent equipment configurations and cumbersome operation, this invention reduces material transfer links between processes, which helps improve overall production efficiency. At the same time, the cleaning component's scraper cleaning method is simple and convenient, and impurities retained on the screen are easy to centrally process, reducing the labor intensity of equipment maintenance and improving operational convenience. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the material feeding hopper of the present invention; Figure 3 This is a schematic diagram of the conveying roller of the present invention; Figure 4 This is a schematic diagram of the crushing component of the present invention; Figure 5 This is a schematic diagram of the screening component of the present invention; Figure 6 This is a schematic diagram of the magnetic block of the present invention; Figure 7 This is a schematic diagram of the cleaning component of the present invention; Figure 8 This is a schematic diagram of the third motor of the present invention; Figure 9 This is a schematic diagram of the flame-retardant component of the present invention.

[0021] The components include: 1. Base; 2. Paving bin; 3. Second processing bin; 4. First processing bin; 5. Conveyor belt; 6. Crushing assembly; 61. First motor; 62. First gear; 63. Second gear; 64. Rotary drum; 65. Gear head; 7. Screening assembly; 71. Second motor; 72. Eccentric wheel; 73. Screen; 74. Spring rod; 75. Rotating shaft; 76. Feed chute; 77. Feed inlet; 8. Cleaning assembly; 81. Scraper box; 82. Handle; 83. Positioning block; 84. Positioning groove; 9. Resistance. Combustion assembly; 91. Powder storage chamber; 92. Release hole; 93. Shape memory alloy thermistor block; 10. First frame; 11. First electric actuator; 12. Magnetic block; 13. Feeding bin; 14. Second frame; 15. Second electric actuator; 16. Press block; 17. Third frame; 18. Third motor; 19. First pressure roller; 20. Second pressure roller; 21. Liquid storage tank; 22. Suction pump; 23. Conveying pipe; 24. Rectangular tube; 25. Nozzle; 26. Fourth motor; 27. Loosening roller; 28. Conveying roller. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a fire-resistant and high-temperature resistant oriented strand board (OSB) laying device, including a base 1 and a storage tank 21. A laying chamber 2 is fixedly connected to the top of the base 1. A second processing chamber 3 is fixedly connected to the top of the laying chamber 2. A first processing chamber 4 is fixedly connected to the top of the second processing chamber 3. A feeding hopper 13 is installed on the top of the first processing chamber 4. A conveyor belt 5 is installed directly above the base 1. A fourth motor 26 is fixedly connected to the outside of the laying chamber 2. A conveying roller 27 is fixedly connected to the output end of the fourth motor 26. A screening component 7 is installed inside the second processing chamber 3. A crushing component 6 is installed inside the first processing chamber 4. A suction pump 22 is fixedly connected to the top of the storage tank 21. A conveying pipe 23 is fixedly connected to the output end of the suction pump 22. A rectangular tube 24 is fixedly connected to the end of the conveying pipe 23 away from the suction pump 22. Nozzles 25 are fixedly connected to the bottom of each rectangular tube 24. The top of the base 1 is sequentially connected to... The first frame 10, the second frame 14, and the third frame 17 are as follows: the first frame 10 is equipped with a cleaning component 8; a conveying roller 28 is rotatably connected to the middle of the base 1; a flame-retardant component 9 is installed inside the conveying roller 28; a magnetic block 12 is installed inside the first frame 10; a first electric push rod 11 is fixedly connected to the top of the first frame 10; the magnetic block 12 is fixedly connected to the telescopic end of the first electric push rod 11; a second electric push rod 15 is fixedly connected to the top of the second frame 14; a pressure block 16 is fixedly connected to the output end of the second electric push rod 15; a third motor 18 is fixedly connected to the outside of the third frame 17; a first pressure roller 19 is fixedly connected to the output end of the third motor 18; a loosening roller 27 is rotatably connected inside the paving chamber 2; a rectangular tube 24 is fixedly connected directly below the second processing chamber 3; a second pressure roller 20 is rotatably connected inside the third frame 17; and the first pressure roller 19 and the second pressure roller 20 mesh with each other.

[0024] Specifically, the base 1 provides stable support, and the wood raw material enters the first processing chamber 4 through the feeding hopper 13. The crushing component 6 inside the first processing chamber 4 crushes the wood raw material. The crushed wood shavings enter the second processing chamber 3, where the screening component 7 screens the wood shavings by particle size. During the falling process of the screened wood shavings, the suction pump 22 extracts the flame retardant additive from the storage tank 21 and transports it to the nozzle 25 through the conveying pipe 23 and rectangular pipe 24. The nozzle 25 sprays the flame retardant additive onto the surface of the wood shavings to complete the modification treatment. The modified wood shavings enter the laying chamber 2, where the fourth motor 26 drives the loosening roller 27 to rotate, loosening the wood. After the shavings are loosened by roller 27, they are spread on conveyor belt 5 to form a blank. Conveyor belt 5 drives the blank through the first frame 10, the second frame 14, and the third frame 17 in sequence. The first electric push rod 11 drives the magnetic block 12 to come close to the shavings and adsorb metal impurities. The second electric push rod 15 drives the pressure block 16 to move down to initially compact the blank. The third motor 18 drives the first pressure roller 19 to rotate. The first pressure roller 19 drives the meshing second pressure roller 20 to rotate synchronously in the opposite direction to compact the blank a second time. During the shaving transfer process, conveyor roller 28 assists in material transport. The flame-retardant component 9 inside conveyor roller 28 ensures production safety.

[0025] The above-mentioned process enables continuous operation of multiple processes, including crushing, screening, flame retardant modification, impurity removal, directional paving, compaction, and safety protection. This reduces material transfer links between processes and helps improve production efficiency. The loosening effect of the conveying roller 27 prevents wood shavings from clumping and ensures uniform paving. The graded compaction method improves the uniformity of the green body density and enhances the structural stability of the finished product. The flame retardant modification treatment, combined with the flame retardant component 9, forms a double fire protection, improving the fire resistance of the product and production safety. The magnetic block 12 effectively removes metal impurities, ensuring the purity of the wood shavings and providing a basic guarantee for the mechanical properties of the finished product.

[0026] Please see the appendix Figure 4 The crushing component 6 includes a first motor 61, which is fixedly connected to the outer wall of the first processing chamber 4. A first gear 62 is fixedly connected to the output end of the first motor 61. A second gear 63 is rotatably connected to the outside of the first processing chamber 4. A rotating drum 64 is fixedly connected to the ends of the first gear 62 and the second gear 63 away from the first motor 61. Teeth 65 are evenly fixedly connected to the outer wall of the rotating drum 64. The first gear 62 and the second gear 63 mesh with each other. The teeth 65 are located directly below the feeding chamber 13.

[0027] Specifically, the first motor 61 starts and outputs torque, driving the first gear 62 fixed at the output end of the first motor 61 to rotate. Since the first gear 62 meshes with the second gear 63 rotatably connected to the outside of the first processing chamber 4, the rotation of the first gear 62 synchronously drives the second gear 63 to rotate in the opposite direction. The ends of the first gear 62 and the second gear 63 away from the first motor 61 are both fixedly connected to the rotating drum 64. The two rotating drums 64 rotate in the opposite direction synchronously with the gears. The teeth 65 evenly fixed on the outer wall of the rotating drum 64 rotate accordingly. The teeth 65 are located directly below the feeding chamber 13. When the wood raw material falls through the feeding chamber 13, it comes into contact with the rotating teeth 65. Through the mutual biting and shearing action of the teeth 65 on the two rotating drums 64, the crushing and processing of the wood raw material is realized.

[0028] The gear meshing transmission ensures the synchronicity and stability of the rotation of the two drums 64, ensuring that the crushing force of the toothed head 65 on the wood raw material is uniform and improving the crushing effect. The toothed head 65 is set directly opposite the feeding bin 13, so that the falling path of the raw material corresponds precisely to the crushing area, reducing the scattering of raw material and improving the utilization rate of raw material. Stable crushing processing can obtain wood shavings with uniform particle size, providing a basic guarantee for the smooth progress of subsequent screening, laying and other processes, and helping to improve the overall product quality.

[0029] Please see the appendix Figure 5 The screening assembly 7 includes a second motor 71, which is fixedly connected to the outer wall of the second processing chamber 3. An eccentric wheel 72 is fixedly connected to the output end of the second motor 71. The second processing chamber 3 is provided with a screen 73. A rotating shaft 75 is fixedly connected inside the screen 73. A feeding trough 76 is fixedly connected to the middle of the second processing chamber 3. A spring rod 74 is fixedly connected between the screen 73 and the second processing chamber 3. The rotating shaft 75 is rotatably connected to the inner wall of the second processing chamber 3. The outer wall of the eccentric wheel 72 abuts against the bottom of the screen 73. A receiving port 77 is fixedly connected to the side of the second processing chamber 3 near the feeding trough 76.

[0030] Specifically, the second motor 71 starts and outputs torque, driving the eccentric wheel 72 fixed at the output end of the second motor 71 to rotate. Since the outer wall of the eccentric wheel 72 abuts against the bottom of the screen 73, and the rotating shaft 75 fixed inside the screen 73 is rotatably connected to the inner wall of the second processing chamber 3, and a spring rod 74 is also fixedly connected between the screen 73 and the second processing chamber 3, the eccentric wheel 72 will continuously push the screen 73 when it rotates. With the elastic restoring effect of the spring rod 74, the screen 73 will reciprocate around the rotating shaft 75. The crushed wood shavings fall onto the vibrating screen 73. Wood shavings of qualified particle size pass through the screen 73 and fall into the feed trough 76 fixed in the middle of the second processing chamber 3. Then, they are conveyed to the subsequent stage through the receiving port 77 fixed on the side of the second processing chamber 3 near the feed trough 76. Unqualified large wood shavings are left on the screen 73.

[0031] The eccentric wheel 72 and the spring rod 74 work together to achieve stable reciprocating vibration of the screen 73, thereby improving screening efficiency. The vibration of the screen 73 ensures that qualified wood shavings pass through quickly and fall into the feed chute 76, and are accurately conveyed through the receiving port 77, reducing the accumulation and blockage of wood shavings. The screened wood shavings have a uniform particle size, which can prevent large particles of impurities from entering subsequent processes and affecting the paving quality. At the same time, the remaining large particles of wood shavings are easy to clean up, improving production convenience and providing a uniform raw material base for the smooth implementation of subsequent flame retardant modification, directional paving and other processes.

[0032] Please see the appendix Figure 6 -Appendix Figure 7 The cleaning component 8 includes a scraper box 81, which is slidably connected to the middle of the first frame 10. Positioning blocks 83 are evenly fixedly connected to the inner wall of the scraper box 81. A positioning groove 84 is opened inside the magnetic block 12. The positioning block 83 is slidably connected to the middle of the positioning groove 84. A handle 82 is fixedly connected to the outer wall of the scraper box 81.

[0033] Specifically, after the magnetic block 12 adsorbs the metal impurities, the operator holds the handle 82 fixed on the outer wall of the scraper box 81 and pushes the scraper box 81 to slide along the middle of the first frame 10. Since the positioning blocks 83, which are evenly fixed on the inner wall of the scraper box 81, are slidably connected to the middle of the positioning groove 84 opened inside the magnetic block 12, the positioning blocks 83 are precisely guided along the positioning groove 84 during the sliding process of the scraper box 81. The inner wall of the scraper box 81 is in close contact with the surface of the magnetic block 12. The metal impurities adsorbed on the surface of the magnetic block 12 are scraped off by sliding friction. The scraped impurities are left in the scraper box 81 for subsequent centralized cleaning.

[0034] The positioning block 83 and the positioning groove 84 work together to ensure the accuracy of the guide when the scraper box 81 slides, and avoid the scraper box 81 from deviating, which may result in incomplete cleaning of impurities or scratching of the surface of the magnetic block 12. The handle 82 is designed to provide operators with a convenient point of force application, reducing the labor intensity of the cleaning operation. The scraper box 81 can collect the scraped impurities in a concentrated manner, preventing impurities from scattering and polluting the production environment or mixing into the wood shavings, ensuring the continuity of the impurity removal effect, and thus maintaining the purity of the wood shavings raw materials, providing a guarantee for the product quality of subsequent processes.

[0035] Please see the appendix Figure 9 The flame-retardant component 9 includes a powder storage chamber 91, which is located inside the conveying roller 28. Release holes 92 are evenly distributed in the middle of the conveying roller 28, and a shape memory alloy thermistor block 93 is installed inside the release hole 92.

[0036] Specifically, dry powder extinguishing agent is stored in a powder storage chamber 91 inside the conveying roller 28. Release holes 92, evenly spaced in the middle of the conveying roller 28, provide a channel for the release of the extinguishing agent. A shape memory alloy thermistor block 93 installed inside the release hole 92 maintains its initial shape under normal production temperature, tightly sealing the release hole 92 to prevent leakage of the dry powder extinguishing agent from the powder storage chamber 91. When localized overheating occurs around the conveying roller 28 due to component friction, shavings accumulation, etc., and the temperature reaches the phase transition temperature of the shape memory alloy thermistor block 93, the shape memory alloy thermistor block 93 deforms, releasing the seal on the release hole 92. Under the centrifugal force generated by the rotation of the conveying roller 28, the dry powder extinguishing agent in the powder storage chamber 91 is rapidly sprayed through the release hole 92 to the overheated area. When the temperature returns to the normal range, the shape memory alloy thermistor block 93 resets, resealing the release hole 92.

[0037] The automatic release and sealing of the extinguishing agent is achieved through the temperature sensing characteristics of the shape memory alloy thermistor block 93, without the need for additional power, ensuring the timeliness and reliability of protection; the evenly distributed release holes 92 enable the extinguishing agent to cover the overheated area around the conveyor roller 28, improving the explosion suppression protection effect; the powder storage chamber 91 is integrated inside the conveyor roller 28, with a compact structure that does not occupy additional production space; it reduces the safety hazards caused by local overheating during production and helps to improve the safety of the equipment operation.

[0038] Working principle: Before the device is started, the wood raw material enters the first processing chamber 4 through the feeding hopper 13. The first motor 61 starts and drives the first gear 62 to rotate. The first gear 62 meshes with the second gear 63, driving the two rotating drums 64 to rotate synchronously in opposite directions. The teeth 65 on the outer wall of the rotating drums 64 mesh with each other to crush the falling wood raw material, forming wood shavings that meet the paving requirements. The crushed shavings naturally fall into the second processing chamber 3 below. While the crushing operation is underway, the second motor 71 starts and drives the eccentric wheel 72 to rotate. The eccentric wheel 72 continuously abuts against the bottom of the screen 73. With the elastic action of the spring rod 74 between the screen 73 and the second processing chamber 3, the screen 73 moves up and down around the rotating shaft 75. The crushed wood shavings fall onto the vibrating screen 73. Wood shavings of qualified particle size fall into the feeding trough 76 through the screen 73 and are conveyed to the conveying roller 28 through the receiving port 77. Unqualified large wood shavings are left on the screen 73. At the same time, the flame retardant additive in the storage tank 21 is conveyed to the rectangular tube 24 through the conveying pipe 23 under the action of the suction pump 22. Then, it is evenly sprayed onto the surface of the falling wood shavings below the screen 73 through the nozzle 25 at the bottom of the rectangular tube 24, completing the flame retardant modification treatment of the wood shavings. The flame-retardant modified wood shavings continue to fall into the paving bin 2. The fourth motor 26 starts and drives the loosening roller 27 to rotate inside the paving bin 2. The loosening roller 27 loosens the wood shavings to prevent them from clumping. Under the guidance of the loosening roller 27, the loosened wood shavings are evenly spread on the conveyor belt 5 to achieve directional paving of the wood shavings and form a continuous wood shaving blank. The modified wood shavings continue to be conveyed by the conveyor belt 5. When they reach the bottom of the first frame 10, the first electric push rod 11 extends and pushes the magnetic block 12 down to a position close to the wood shavings. The magnetic block 12 adsorbs the metal impurities mixed in the wood shavings. When there are many impurities adsorbed on the surface of the magnetic block 12, the handle 82 is pulled to drive the scraper box 81 to slide along the first frame 10. The positioning block 83 on the inner wall of the scraper box 81 slides along the positioning groove 84 inside the magnetic block 12 to scrape off the metal impurities on the surface of the magnetic block 12, ensuring the impurity removal effect.

[0039] After impurities are removed, the wood shavings blank is conveyed by the conveyor belt 5 to the lower part of the second frame 14. The second electric push rod 15 is activated and extended, pushing the pressure block 16 down to initially compact the wood shavings blank. The initially compacted blank continues to be conveyed by the conveyor belt 5 to the inside of the third frame 17. The third motor 18 is activated to drive the first pressure roller 19 to rotate. The first pressure roller 19 meshes with the second pressure roller 20, driving the second pressure roller 20 to rotate synchronously in the opposite direction. Through the squeezing action of the first pressure roller 19 and the second pressure roller 20, the wood shavings blank is compacted a second time, improving the uniformity of the blank density.

[0040] Throughout the operation, the powder storage chamber 91 inside the conveying roller 28 is filled with dry powder extinguishing agent, and the shape memory alloy thermistor block 93 is in its initial state, tightly sealing the release hole 92. When local overheating occurs around the conveying roller 28 due to friction, and the temperature reaches the phase transformation temperature of the shape memory alloy thermistor block 93, the shape memory alloy thermistor block 93 deforms, releasing the seal on the release hole 92. Under the centrifugal force generated by the high-speed rotation of the conveying roller 28, the dry powder extinguishing agent in the powder storage chamber 91 is rapidly sprayed through the release hole 92 to the overheated spot, achieving precise explosion suppression. After the temperature returns to normal, the shape memory alloy thermistor block 93 resets and re-seals the release hole 92, ensuring the safe operation of the device.

Claims

1. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device, comprising a base (1) and a liquid storage tank (21), characterized in that, A paving bin (2) is fixedly connected to the top of the base (1), a second processing bin (3) is fixedly connected to the top of the paving bin (2), a first processing bin (4) is fixedly connected to the top of the second processing bin (3), a feeding bin (13) is installed on the top of the first processing bin (4), a conveyor belt (5) is installed directly above the base (1), a fourth motor (26) is fixedly connected to the outside of the paving bin (2), a loosening roller (27) is fixedly connected to the output end of the fourth motor (26), a screening component (7) is provided inside the second processing bin (3), a crushing component (6) is provided inside the first processing bin (4), and the top of the storage tank (21) is fixedly connected to the second processing bin (3). A suction pump (22) is fixedly connected to the base (1). A delivery pipe (23) is fixedly connected to the output end of the suction pump (22). A rectangular tube (24) is fixedly connected to the end of the delivery pipe (23) away from the suction pump (22). A nozzle (25) is fixedly connected to the bottom of the rectangular tube (24). A first frame (10), a second frame (14), and a third frame (17) are fixedly connected to the top of the base (1) in sequence. A cleaning component (8) is provided inside the first frame (10). A delivery roller (28) is rotatably connected to the middle of the base (1). A flame-retardant component (9) is provided inside the delivery roller (28). A magnetic block (12) is installed inside the first frame (10).

2. The fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 1, characterized in that, The crushing component (6) includes a first motor (61), which is fixedly connected to the outer wall of the first processing chamber (4). The output end of the first motor (61) is fixedly connected to a first gear (62), and the outside of the first processing chamber (4) is rotatably connected to a second gear (63). The ends of the first gear (62) and the second gear (63) away from the first motor (61) are both fixedly connected to a rotating drum (64), and the outer wall of the rotating drum (64) is uniformly fixedly connected with teeth (65).

3. The fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 1, characterized in that, The screening assembly (7) includes a second motor (71), which is fixedly connected to the outer wall of the second processing chamber (3). An eccentric wheel (72) is fixedly connected to the output end of the second motor (71). A screen (73) is provided in the second processing chamber (3). A rotating shaft (75) is fixedly connected inside the screen (73). A feeding trough (76) is fixedly connected in the middle of the second processing chamber (3). A spring rod (74) is fixedly connected between the screen (73) and the second processing chamber (3).

4. The fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 1, characterized in that, The cleaning component (8) includes a scraper box (81), which is slidably connected to the middle of the first frame (10). Positioning blocks (83) are uniformly fixedly connected to the inner wall of the scraper box (81), and a positioning groove (84) is opened inside the magnetic block (12).

5. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 1, characterized in that, The flame-retardant component (9) includes a powder storage chamber (91), which is located inside the conveying roller (28). The conveying roller (28) has a release hole (92) evenly distributed in the middle, and a shape memory alloy thermistor block (93) is installed inside the release hole (92).

6. The fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 1, characterized in that, The top of the first frame (10) is fixedly connected to a first electric push rod (11), the magnetic block (12) is fixedly connected to the telescopic end of the first electric push rod (11), the top of the second frame (14) is fixedly connected to a second electric push rod (15), the output end of the second electric push rod (15) is fixedly connected to a pressure block (16), the outside of the third frame (17) is fixedly connected to a third motor (18), and the output end of the third motor (18) is fixedly connected to a first pressure roller (19).

7. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 6, characterized in that, The conveying roller (27) is rotatably connected inside the paving bin (2), the rectangular tube (24) is fixedly connected directly below the second processing bin (3), and the second pressure roller (20) is rotatably connected inside the third frame (17), and the first pressure roller (19) meshes with the second pressure roller (20).

8. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 2, characterized in that, The first gear (62) meshes with the second gear (63), and the tooth head (65) is located directly below the feed hopper (13).

9. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 3, characterized in that, The rotating shaft (75) is rotatably connected to the inner wall of the second processing chamber (3), the outer wall of the eccentric wheel (72) abuts against the bottom of the screen (73), and the receiving port (77) is fixedly connected to the side of the second processing chamber (3) near the feeding trough (76).

10. A fire-resistant and high-temperature resistant oriented strand board (OSB) installation device according to claim 4, characterized in that, The positioning block (83) is slidably connected to the middle of the positioning groove (84), and a handle (82) is fixedly connected to the outer wall of the scraper box (81).

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