Manufacturing method of high-strength bamboo fiber fireproof plate

Abstract

The invention provides a manufacturing method of a high-strength bamboo fiber fireproof plate, belongs to the technical field of fireproof plates, and solves the technical problems that an existing fireproof plate is poor in fracture resistance and flame retardance, high in cost and the like. The manufacturing method of the high-strength bamboo fiber fireproof plate comprises the following steps that a waste bamboo frame is adopted, and metal parts on the bamboo frame are removed; the cleaned bamboo and wood frame is placed on a feeding mechanism and fed into a smashing machine through the feeding mechanism to be smashed, and bamboo fibers are prepared; bamboo fibers are fed into a mixing mechanism according to the proportion, meanwhile, Portland cement, magnesium oxide, a flame retardant, modified potassium titanate whiskers and water are added into the mixing mechanism, stirring and mixing are conducted, and a mixture is obtained; the mixture is uniformly fed into the hot pressing mechanism through the material distributing mechanism, meanwhile, an oscillation assembly in the hot pressing mechanism is used for oscillation, and then the hot pressing mechanism is used for hot pressing forming. The fireproof plate has the advantages that the production cost is reduced, and the fracture resistance and flame retardance of the fireproof plate are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fireproof boards, and relates to a bamboo fiber fireproof board, in particular to a manufacturing method of a high-strength bamboo fiber fireproof board. Background Art

[0002] As an important building material, fireproof boards have been widely used in the construction industry in recent years. Their main function is to effectively delay the spread of fire during a fire, buying precious time for personnel evacuation and fire extinguishing. Fireproof boards are divided into different types according to different materials. Among them, mineral wool boards and glass wool boards, although having advantages such as good heat insulation performance, have gradually been phased out due to problems such as the harm of short fibers to the human respiratory system and poor strength; although cement boards have high strength, their fire resistance is poor and they are prone to cracking and perforating in a fire scene, so their application is limited to a certain extent. In contrast, calcium silicate fireproof boards are widely used in firewalls, partition walls, ceilings, floors and other parts of high-rise buildings, public facilities, residences, industrial factories, etc. due to their good weather resistance, water resistance, corrosion resistance, sound absorption and other properties, and are indispensable fireproof and decorative materials in modern architecture. However, when calcium silicate fireproof boards are used as walls or floors, they need to bear greater pressure, so calcium silicate fireproof boards need to have high flexural strength and flame retardancy.

[0003] After retrieval, as disclosed in a Chinese patent document for an environmentally friendly flame-retardant fireproof board and its preparation method [Application No.: 202411042886.6; Publication No.: CN 118771831 A]. This fireproof board and its preparation method, the fireproof board includes raw materials of the following parts by weight: 30 - 40 parts of portland cement, 15 - 20 parts of calcium hydroxide, 20 - 26 parts of modified potassium titanate whiskers, 10 - 20 parts of filler, 5 - 10 parts of reinforcing fiber, 10 - 15 parts of flame retardant, 10 - 16 parts of water; the modified potassium titanate whiskers are obtained by modifying potassium titanate whiskers with 2-aminoethylphosphonic acid. Through the above technical solution, the problems of poor flexural strength and flame retardancy of fireproof boards in related technologies are solved.

[0004] Although the fireproof board and its preparation method disclosed in this patent solve the problems of poor flexural strength and flame retardancy of fireproof boards in related technologies, however, in the processing method of this fireproof board, after hot pressing and forming, the board is directly taken out, and it is easy for the shape of the board to be affected because the board has not been cooled and shaped, thereby reducing the flexural strength and flame retardancy of the fireproof board after forming, and the waste bamboo and wood frames during production cannot be utilized, increasing the production cost invisibly. Summary of the Invention

[0005] The object of the present invention is to address the above problems in the existing technology and propose a manufacturing method for a high-strength bamboo fiber fireproof board. The technical problems to be solved by this invention are: how to reduce production costs while improving the flexural strength and flame retardancy of the fireproof board.

[0006] The object of the present invention can be achieved by the following technical solutions: A manufacturing method for a high-strength bamboo fiber fireproof board, comprising the following steps: S1. Raw material preparation: Prepare corresponding parts by weight of portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water according to the corresponding component raw material ratio. S2. Preparation of bamboo fiber raw materials: Use discarded bamboo and wooden frames, and remove the metal parts on the bamboo and wooden frames. S3. Place the cleaned bamboo and wooden frames on the feeding mechanism, and feed them into the crusher through the feeding mechanism for crushing to obtain bamboo fibers. S4. Feed the bamboo fibers into the mixing mechanism in proportion, and at the same time add portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water into the mixing mechanism for stirring and mixing to obtain a mixture. S5. Uniformly feed the mixture into the hot pressing mechanism through the material distributing mechanism, and at the same time use the oscillation component in the hot pressing mechanism for oscillation to ensure that the materials are tight and even, and then use the hot pressing mechanism for hot pressing and forming. S6. Take out the hot-pressed fireproof board through the forming frame, convey it through the conveying mechanism, and then perform air cooling or natural cooling. S7. Feed the cooled fireproof board together with the forming frame into the trimming machine for trimming, and then take out the trimmed fireproof board for polishing operation.

[0007] The particle size of the bamboo fibers is 60 - 100 mesh.

[0008] The parts by weight of each component raw material are: 120 - 180 parts of bamboo fibers, 15 - 25 parts of portland cement, 12 - 20 parts of magnesium oxide, 5 - 13 parts of flame retardant, 10 - 18 parts of modified potassium titanate whiskers, and 30 - 45 parts of water.

[0009] The temperature for hot pressing and forming in step S5 is 130 - 160 °C, and the hot pressing pressure is 1.1 - 1.7 MPa.

[0010] The diameter of the potassium titanate whiskers is 0.3 - 0.6 μm, and the length is 6 - 17 μm.

[0011] The equipment used in the steps S3 - S6 is a fireproof board production device. The fireproof board production device includes a machine base, on which a feeding mechanism, a crusher, a feeding mechanism, a mixing mechanism, a hot pressing mechanism and a conveying mechanism are arranged. The crusher is connected to the mixing mechanism through the feeding mechanism, and the mixing mechanism is connected to the hot pressing mechanism through a material distributing mechanism. Guide plates are fixed at both the front and rear ends on the upper side of the conveying mechanism. The feeding mechanism includes a support frame fixed on the machine base. A support column is rotatably connected to the support frame. A rotating motor is fixed on the machine base, and the output shaft end of the rotating motor is fixedly connected to the support column. A support beam is fixed at the upper end of the support column, and a first winding assembly is fixed on the support beam. A steel wire rope is wound around the first winding assembly. The lower end of the steel wire rope is fixedly connected to a lifting box, and a closed cover is fixed at the lower end of the lifting box. The closed cover can be in close contact with the feed hopper of the crusher. Lifting grooves are opened on both the left and right sides inside the lifting box. A lifting motor is fixed at the upper end of the lifting groove. The output shaft end of the lifting motor is fixedly connected to a lifting screw rod. A lifting block is threadedly connected to the lifting screw rod. A lifting plate is fixed on the lifting block. The lower end of the lifting plate is slidably connected to a grasping plate. A driving groove is opened on the upper side of the grasping plate, and a driving motor is fixed in the driving groove. The output shaft end of the driving motor is fixedly connected to a driving screw rod. A driving block is threadedly connected to the driving screw rod, and the driving block is fixedly connected to the lifting plate.

[0012] With the above structure, during operation, the driving motor drives the driving screw rod to rotate, causing the two grasping plates to move away from each other. Then, the lifting motor is driven, and the lifting motor selectively drives the lifting plate to descend, causing the lifting plate to extend out of the lifting box. The two lifting plates are clamped on both sides of the stacked bamboo and wood frame and descend to the bottom. Then, the driving motor rotates in reverse, causing the two grasping plates to move below the bamboo and wood frame. At the same time, the lifting motor rotates in reverse, and the first winding assembly unwinds the wire rope, causing the lifting box to descend, so that the bamboo and wood frame enters the interior of the lifting box. After completion, the first winding assembly lifts the bamboo and wood frame. In cooperation with the rotating motor, the lifting box is positioned above the crusher. After the closed cover contacts the feed hopper of the crusher, the two grasping plates are moved away from each other, allowing the bamboo and wood frame to enter the crusher through the feed hopper for crushing to obtain bamboo fibers. Then, the bamboo fibers are sent into the mixing mechanism in proportion through the feeding mechanism. At the same time, Portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water are added to the mixing mechanism for stirring and mixing to obtain a mixture. After that, the mixture is evenly sent into the hot pressing mechanism through the material distributing mechanism. At the same time, the oscillation assembly in the hot pressing mechanism is used for oscillation to ensure that the materials are compact and uniform. Then, the hot pressing mechanism is used for hot pressing and forming. The hot - pressed fireproof board is taken out through the forming frame, conveyed by the conveying mechanism, and then air - cooled or naturally cooled.

[0013] On the left side of the lower end of the lifting box, a second winding component is fixed. A shielding cloth is wound around the second winding component. The other end of the shielding cloth is fixed with a counterweight rod. On the right side of the lower end of the lifting box, a third winding component is fixed. Two connecting ropes are wound around the third winding component. The connecting ropes are fixedly connected to both ends of the counterweight rod.

[0014] With the above structure, after the bamboo and wood frame enters the lifting box, the second winding component and the third winding component are started. The shielding cloth is stretched to the right through the connecting rope, and the lower part of the lifting box is closed by the shielding cloth to prevent the bamboo and wood frame from falling due to scattering during the transportation of the lifting box, ensuring the stability of transportation and the safety of use.

[0015] At the upper end inside the lifting box, a dust suction chamber is opened. A number of dust suction ports are opened at the lower end of the dust suction chamber. A filter screen is fixed inside the dust suction chamber. A blower is fixed at the left end of the dust suction chamber.

[0016] With the above structure, after the closed cover closes the feed hopper of the crusher, the blower can be started during the feeding and the crushing of the bamboo and wood frame to adsorb the dust generated by the crushing, preventing the dust from scattering and affecting the working environment. After the crushing is completed, the blower stops working, and the adsorbed debris can automatically fall into the crusher through the dust suction ports, reducing the loss of materials and thus reducing the processing cost. A horn-shaped cover is fixed on the side of the lifting box. A telescopic column is fixed on the lower side of the support beam. A first electromagnet is fixed at the lower end of the telescopic column.

[0017] With the above structure, after the lifting box rises to a certain height, the first electromagnet enters the horn-shaped cover under the action of the inclined surface of the horn-shaped cover, and can straighten and limit the lifting box. When the first electromagnet reaches the bottom of the horn-shaped cover, the first electromagnet is energized and adsorbed and fixed to the horn-shaped cover. When the lifting box descends and corresponds to the feed hopper of the crusher, the cooperation of the telescopic column and the first electromagnet can ensure the stability of the descent of the lifting box and prevent the problem that the lifting box shakes and is difficult to align.

[0018] The hot pressing mechanism includes a die pressing frame and a hot pressing plate. The die pressing frame is fixedly connected to the machine base. First electric telescopic rods are fixedly arranged on both the front and rear sides of the die pressing frame. The telescopic ends of the first electric telescopic rods are fixedly connected to the hot pressing plate through support rods. An inlet and outlet is formed at the right end of the die pressing frame. Installation grooves are formed on both the front and rear sides of the inlet and outlet. An opening and closing motor is fixedly arranged inside the installation groove. An opening and closing screw rod is fixedly arranged at the output shaft end of the opening and closing motor. An opening and closing block is threadedly connected to the opening and closing screw rod. An opening and closing door is fixedly arranged on the opening and closing block. A forming frame is placed inside the die pressing frame. A cleaning cavity is formed at the left end of the forming frame. The front, rear, and lower sides of the cleaning cavity are all open. A first elastic component is fixedly arranged inside the cleaning cavity. A first cleaning brush is fixedly arranged at the lower end of the first elastic component. Two mounting plates are fixedly arranged inside the cleaning cavity. A second elastic component is fixedly arranged on the mounting plates. A second cleaning brush is fixedly arranged on the second elastic component. A second electromagnet corresponding to the first cleaning brush is fixedly arranged inside the cleaning cavity. A third electromagnet corresponding to the second cleaning brush is fixedly arranged on the mounting plate.

[0019] With the above structure, during operation, the mixture enters the forming frame and is hot pressed into shape by the hot pressing plate. After hot pressing, the opening and closing motor drives the opening and closing door to open, so that the forming frame can be pulled out from the inlet and outlet. Since the forming frame and the formed fireproof board are moved out together, on the one hand, it can prevent the fireproof board from deforming due to incomplete cooling and forming, and on the other hand, it can prevent burrs and the like around the fireproof board from falling on the die pressing frame or scattering outside. Thus, when the forming frame enters the conveying mechanism, the guiding plate can be used to guide and limit the forming frame, which is convenient for subsequent cutting positioning and will not damage the fireproof board, improving the processing quality.

[0020] The material distribution component includes a second electric telescopic rod. A material distribution box is fixedly arranged at the end of the second electric telescopic rod. A feeding pipe is fixedly arranged at the upper end of the material distribution box. The feeding pipe is connected to the mixing mechanism through a flexible pipe. A feeding pump is arranged on the feeding pipe. Third electric telescopic rods are fixedly arranged on both sides of the material distribution box. The ends of the third electric telescopic rods are fixedly arranged with blanking boxes. A row of evenly distributed material distribution pipes are fixedly arranged at the bottom of the blanking boxes. The left and right sides of the material distribution box communicate with a conveying pipe. A sliding pipe is slidably connected inside the conveying pipe. The other end of the sliding pipe communicates with the blanking box. A vibration cavity is formed inside the die pressing frame. A vibration component is arranged inside the vibration cavity. The vibration component includes a vibration plate. The lower side of the vibration plate is connected to the vibration cavity through a vibration spring. A number of metal blocks are fixedly arranged on the lower side of the vibration plate. A number of fourth electromagnets corresponding to the metal blocks are fixedly arranged at the lower end inside the vibration cavity. A number of fourth electric telescopic rods are fixedly arranged at the lower end inside the vibration cavity. A support block is fixedly arranged at the end of the fourth electric telescopic rod.

[0021] With the above structure, the mixed material in the mixing mechanism is sent onto the distribution pipe through the distribution box and the blanking box, and evenly discharged through a row of evenly distributed distribution pipes. At the same time, the fourth electromagnet is powered on and off, causing the oscillating plate to oscillate reciprocally, making the material on the pressing die holder evenly distributed and relatively solid. After the blanking is completed, through the cooperation of the second electric telescopic rod and the third electric telescopic rod, the distribution pipe is moved out of the pressing die holder. At the same time, the fourth electric telescopic rod drives the support block to rise, making the oscillating plate contact the upper end of the vibration cavity, improving the strength of the pressing die holder and ensuring the quality of the fireproof board during hot pressing.

[0022] Compared with the prior art, the manufacturing method of this high-strength bamboo fiber fireproof board has the following advantages: 1. By adopting the cooperation and preparation method of the present invention, the waste bamboo and wood frames can be recycled, reducing the processing cost, saving energy and protecting the environment. At the same time, a forming frame is provided. After the hot pressing is completed, the fireproof board and the forming frame can be taken out together. On the one hand, it can prevent the fireproof board from deforming due to incomplete cooling and forming. On the other hand, it can prevent the burrs around the fireproof board from falling on the pressing die holder or scattering outside, reducing the probability of damage to the fireproof board and improving the flexural strength and flame retardancy of the fireproof board.

[0023] 2. During operation, the driving motor drives the driving screw to rotate, making the two grasping plates move away from each other. Then the lifting motor is driven, and the lifting motor selectively drives the lifting plate to descend, making the lifting plate extend out of the lifting box, clamping the two lifting plates on both sides of the stacked bamboo and wood frames, and descending to the bottom. Then the driving motor rotates in reverse, making the two grasping plates move below the bamboo and wood frames. At the same time, the lifting motor rotates in reverse, and the first winding assembly unwinds the wire rope, making the lifting box descend, so that the bamboo and wood frames enter the interior of the lifting box. After completion, the first winding assembly lifts the bamboo and wood frames, and cooperates with the rotating motor to make the lifting box located above the crusher. After the closed cover contacts the feed hopper of the crusher, the two grasping plates are moved away from each other, so that the bamboo and wood frames enter the crusher through the feed hopper for crushing to obtain bamboo fibers. Then the bamboo fibers are sent into the mixing mechanism according to a proportion through the feeding mechanism. At the same time, portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water are added into the mixing mechanism for stirring and mixing. After obtaining the mixed material, the mixed material is evenly sent into the hot pressing mechanism through the distribution mechanism. At the same time, the oscillation assembly in the hot pressing mechanism is used for oscillation to ensure that the material is compact and uniform. Then the hot pressing mechanism is used for hot pressing and forming; the hot-pressed fireproof board is taken out through the forming frame, conveyed through the conveying mechanism, and then air-cooled or naturally cooled.

[0024] 3. After the bamboo-wood frame enters the lifting box, start the second winding component and the third winding component, stretch the shielding cloth to the right through the connecting rope, and use the shielding cloth to seal the lower part of the lifting box to prevent the bamboo-wood frame from falling due to scattering during the transportation of the lifting box, ensuring the stability of transportation and the safety of use.

[0025] 4. After the closed cover seals the feed hopper of the crusher, the blower can be started during the feeding and crushing of the bamboo-wood frame to adsorb the dust generated by crushing and prevent the dust from spreading and affecting the working environment. After the crushing is completed, the blower stops working, allowing the adsorbed debris to automatically fall into the crusher through the dust suction port, reducing the loss of materials and thus reducing the processing cost.

[0026] 5. During operation, the mixture enters the forming frame and is hot-pressed into shape using the hydraulic plate. After hot-pressing, the opening and closing motor drives the opening and closing door to open, enabling the forming frame to be pulled out from the inlet and outlet. Since the forming frame and the formed fireproof board are moved out together, on the one hand, it can prevent the fireproof board from deforming due to incomplete cooling and forming, and on the other hand, it can prevent burrs around the fireproof board from falling on the pressing film frame or spreading out. Thus, when the forming frame enters the conveying mechanism, the guiding plate can be used to guide and limit the forming frame, facilitating subsequent cutting positioning and not damaging the fireproof board, improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the process flow chart of the present invention.

[0028] Figure 2 is the structural schematic diagram of the fireproof board production device of the present invention.

[0029] Figure 3 is the structural schematic diagram of the feeding mechanism of the present invention.

[0030] Figure 4 is the internal structural schematic diagram of the lifting box of the present invention.

[0031] Figure 5 is the bottom view structural schematic diagram of the lifting box of the present invention.

[0032] Figure 6 is the structural schematic diagram of the grabbing plate of the present invention.

[0033] Figure 7 is the top view structural schematic diagram of the pressing mold frame of the present invention.

[0034] Figure 8 is the internal structural schematic diagram of the pressing mold frame of the present invention.

[0035] Figure 9 is Figure 8 the partial enlarged view of A in

[0036] Figure 10 It is a schematic structural diagram of the material distribution mechanism in the present invention.

[0037] Figure 11 It is a schematic internal structure diagram of the cleaning chamber in the present invention.

[0038] In the figure, 1. Machine base; 2. Feeding mechanism; 3. Crusher; 4. Feeding mechanism; 5. Mixing mechanism; 6. Film pressing frame; 7. First electric telescopic rod; 8. Support rod; 9. Hot pressing plate; 10. Feeding pipe; 11. Second electric telescopic rod; 12. Conveying mechanism; 13. Guide plate; 14. Support frame; 15. Rotating motor; 16. Support column; 17. Support beam; 18. First winding assembly; 19. Steel wire rope; 20. Lifting box; 21. Horn cover; 22. Telescopic column; 23. First electromagnet; 24. Dust suction chamber; 25. Filter screen; 26. Fan; 27. Lifting groove; 28. Lifting motor; 29. Lifting block; 30. Lifting plate; 31. Grabbing plate; 32. Enclosure; 33. Second winding assembly; 34. Third winding assembly; 35. Shading cloth; 36. Counterweight rod; 37. Connecting rope; 38. Driving groove; 39. Driving motor; 40. Driving screw; 41. Driving block; 42. Forming frame; 43. Opening and closing door; 44. Opening and closing motor; 45. Opening and closing screw; 46. Opening and closing block; 47. Cleaning chamber; 48. Vibration chamber; 49. Oscillation plate; 50. Metal block; 51. Fourth electromagnet; 52. Oscillation spring; 53. Fourth electric telescopic rod; 54. Support block; 55. Material distribution box; 56. Third electric telescopic rod; 57. Discharge box; 58. Material distribution pipe; 59. Conveying pipe; 60. Sliding pipe; 61. First elastic component; 62. First cleaning brush; 63. Mounting plate; 64. Second elastic component; 65. Third electromagnet; 66. Second electromagnet. Detailed implementation manners

[0039] The following are specific embodiments of the present invention in combination with the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0040] The object of the present invention can be achieved by the following technical solutions: Embodiment

[0041] A manufacturing method of a high-strength bamboo fiber fireproof board includes the following steps: S1. Raw material preparation: Prepare corresponding weight parts of portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water according to the corresponding component raw material ratio. S2. Preparation of bamboo fiber raw materials: Use waste bamboo and wood frames to remove metal parts on the bamboo and wood frames. S3. Place the cleaned bamboo and wood frame on the feeding mechanism, and feed it into the crusher through the feeding mechanism for crushing to obtain bamboo fiber; S4. Feed the bamboo fiber into the mixing mechanism according to a proportion, and at the same time add portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water into the mixing mechanism for stirring and mixing to obtain a mixture; S5. Evenly feed the mixture into the hot pressing mechanism through the material distributing mechanism, and at the same time use the oscillation component in the hot pressing mechanism to oscillate to ensure that the materials are compact and even, and then use the hot pressing mechanism for hot pressing and forming; S6. Take out the hot-pressed fireproof board through the forming frame, convey it through the conveying mechanism, and then perform air cooling or natural cooling; S7. Feed the cooled fireproof board together with the forming frame onto the trimming machine for trimming, and then take out the trimmed fireproof board for polishing operation.

[0042] The particle size of the bamboo fiber is 80 mesh.

[0043] The weight parts of each component raw material are as follows: 150 parts of bamboo fiber, 20 parts of portland cement, 16 parts of magnesium oxide, 9 parts of flame retardant, 14 parts of modified potassium titanate whiskers, and 37 parts of water.

[0044] In step S5, the temperature of hot pressing and forming is 145 °C, and the hot pressing pressure is 1.4 MPa.

[0045] The diameter of the potassium titanate whiskers is 0.45 μm, and the length is 11 μm.

[0046] In this embodiment, the processing equipment used in the manufacturing method of the high-strength bamboo fiber fireproof board is all equipment that can be purchased on the market. Embodiment

[0047] A manufacturing method of a high-strength bamboo fiber fireproof board includes the following steps: S1. Raw material preparation: Prepare the corresponding weight parts of portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water according to the corresponding component raw material ratio; S2. Preparation of bamboo fiber raw materials: Use discarded bamboo and wood frames to remove the metal parts on the bamboo and wood frames; S3. Place the cleaned bamboo and wood frame on the feeding mechanism, and feed it into the crusher through the feeding mechanism for crushing to obtain bamboo fiber; S4. Feed the bamboo fiber into the mixing mechanism according to a proportion, and at the same time add portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water into the mixing mechanism for stirring and mixing to obtain a mixture; S5. Feed the mixture evenly into the hot pressing mechanism through the material distributing mechanism. At the same time, use the oscillation component in the hot pressing mechanism to oscillate, ensuring that the materials are compact and evenly distributed. Then, use the hot pressing mechanism to perform hot pressing forming. S6. Take out the hot-pressed fireproof board through the forming frame, convey it through the conveying mechanism, and then perform air cooling or natural cooling. S7. Feed the cooled fireproof board together with the forming frame onto the trimming machine for trimming, and then take out the trimmed fireproof board for polishing operation.

[0048] The particle size of the bamboo fiber is 80 mesh.

[0049] The weight parts of each component raw material are as follows: 150 parts of bamboo fiber, 20 parts of portland cement, 16 parts of magnesium oxide, 9 parts of flame retardant, 14 parts of modified potassium titanate whiskers, and 37 parts of water.

[0050] In step S5, the temperature of hot pressing forming is 145 °C, and the hot pressing pressure is 1.4 MPa.

[0051] The diameter of the potassium titanate whiskers is 0.45 μm, and the length is 11 μm.

[0052] As Figure 2-11 shown, the equipment used in steps S3 - S6 is a fireproof board production device. The fireproof board production device includes a machine base 1. On the machine base 1, there are a feeding mechanism 2, a crusher 3, a feeding mechanism 4, a mixing mechanism 5, a hot pressing mechanism, and a conveying mechanism 12. The crusher 3 is connected to the mixing mechanism 5 through the feeding mechanism 4. The mixing mechanism 5 is connected to the hot pressing mechanism through the material distributing mechanism. At the front and rear ends on the upper side of the conveying mechanism 12, there are fixed guiding plates 13. The feeding mechanism 2 includes a support frame 14. The support frame 14 is fixed on the machine base 1. On the support frame 14, there is a support column 16 rotatably connected. On the machine base 1, there is a rotating motor 15 fixed. The output shaft end of the rotating motor 15 is fixedly connected to the support column 16. At the upper end of the support column 16, there is a support beam 17 fixed. On the support beam 17, there is a first winding assembly 18 fixed. A steel wire rope 19 is wound around the first winding assembly 18. The lower end of the steel wire rope 19 is fixedly connected to a lifting box 20. At the lower end of the lifting box 20, there is a closed cover 32 fixed. The closed cover 32 can be in close contact with the feeding hopper of the crusher 3. On the left and right sides inside the lifting box 20, there are lifting grooves 27 opened. At the upper end of the lifting groove 27, there is a lifting motor 28 fixed. The output shaft end of the lifting motor 28 is fixed with a lifting screw rod. A lifting block 29 is threadedly connected to the lifting screw rod. On the lifting block 29, there is a lifting plate 30 fixed. The lower end of the lifting plate 30 is slidably connected to a grasping plate 31. On the upper side of the grasping plate 31, there is a driving groove 38 opened. A driving motor 39 is fixed in the driving groove 38. The output shaft end of the driving motor 39 is fixed with a driving screw rod 40. A driving block 41 is threadedly connected to the driving screw rod 40. The driving block 41 is fixedly connected to the lifting plate 30.

[0053] With the above structure, during operation, the driving screw 40 is rotated by the driving motor 39, causing the two gripping plates 31 to move away from each other. Then, the lifting motor 28 is driven, and the lifting motor 28 selectively drives the lifting plate 30 to descend, causing the lifting plate 30 to extend out of the lifting box 20. The two lifting plates 30 are clamped on both sides of the stacked bamboo and wood frame, and descend to the bottom. Then, the driving motor 39 rotates in reverse, causing the two gripping plates 31 to move below the bamboo and wood frame. At the same time, the lifting motor 28 rotates in reverse, and the first winding assembly 18 unwinds the rope, causing the lifting box 20 to descend, so that the bamboo and wood frame enters the interior of the lifting box 20. After completion, the first winding assembly 18 lifts the bamboo and wood frame. In cooperation with the rotating motor 15, the lifting box 20 is positioned above the crusher 3. After the closed cover 32 contacts the feed hopper of the crusher 3, the two gripping plates 31 are moved away from each other, causing the bamboo and wood frame to enter the crusher 3 through the feed hopper for crushing to obtain bamboo fibers. Then, the bamboo fibers are sent into the mixing mechanism 5 in proportion by the feeding mechanism 4. At the same time, portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water are added to the mixing mechanism 5 for stirring and mixing. After obtaining the mixture, the mixture is evenly sent into the hot pressing mechanism by the material distributing mechanism. At the same time, the oscillation assembly in the hot pressing mechanism is used for oscillation to ensure that the materials are compact and uniform. Then, the hot pressing mechanism is used for hot pressing and forming; the hot-pressed fireproof board is taken out through the forming frame 42, conveyed by the conveying mechanism 12, and then air-cooled or naturally cooled.

[0054] A second winding assembly 33 is fixed to the left side of the lower end of the lifting box 20. A shielding cloth 35 is wound around the second winding assembly 33. The other end of the shielding cloth 35 is fixed to a counterweight rod 36. A third winding assembly 34 is fixed to the right side of the lower end of the lifting box 20. Two connecting ropes 37 are wound around the third winding assembly 34. The connecting ropes 37 are fixedly connected to both ends of the counterweight rod 36.

[0055] With the above structure, after the bamboo and wood frame enters the lifting box 20, the second winding assembly 33 and the third winding assembly 34 are started. The shielding cloth 35 is stretched to the right through the connecting ropes 37, and the lower part of the lifting box 20 is closed by the shielding cloth 35 to prevent the bamboo and wood frame from falling due to scattering during the transportation of the lifting box 20, ensuring the stability of transportation and the safety of use.

[0056] A dust suction cavity 24 is provided at the upper end inside the lifting box 20. A plurality of dust suction ports are provided at the lower end of the dust suction cavity 24. A filter screen 25 is fixed inside the dust suction cavity 24. A blower 26 is fixed to the left end of the dust suction cavity 24.

[0057] With the above structure, after the closed cover 32 closes the feed hopper of the crusher 3, the blower 26 can be turned on during the feeding and the crushing of the bamboo and wood frames to adsorb the dust generated by the crushing and prevent the dust from spreading out and affecting the working environment. After the crushing is completed, the blower 26 stops working, allowing the adsorbed debris to automatically fall into the crusher 3 through the dust suction port, reducing the loss of materials and thus reducing the processing cost. A horn-shaped cover 21 is fixed to the side of the lifting box 20, a telescopic column 22 is fixed to the lower side of the support beam 17, and a first electromagnet 23 is fixed to the lower end of the telescopic column 22.

[0058] With the above structure, after the lifting box 20 rises to a certain height, the first electromagnet 23 enters the horn-shaped cover 21 under the action of the inclined surface of the horn-shaped cover 21, which can correct and limit the lifting box 20. When the first electromagnet 23 reaches the bottom of the horn-shaped cover 21, the first electromagnet 23 is energized and adsorbs and fixes to the horn-shaped cover 21. When the lifting box 20 descends to correspond to the feed hopper of the crusher 3, the cooperation of the telescopic column 22 and the first electromagnet 23 can ensure the stability of the descent of the lifting box 20 and prevent the problem that the lifting box 20 shakes and is difficult to align.

[0059] The hot pressing mechanism includes a mold pressing frame and a hot pressing plate 9. The mold pressing frame 6 is fixedly connected to the machine base 1. First electric telescopic rods 7 are fixed to both the front and rear sides of the mold pressing frame 6. The telescopic ends of the first electric telescopic rods 7 are fixedly connected to the hot pressing plate 9 through support rods 8. An inlet and outlet are provided at the right end of the mold pressing frame 6. Installation grooves are provided on both the front and rear sides of the inlet and outlet. A closing and opening motor 44 is fixed inside the installation groove. A closing and opening screw rod 45 is fixed to the output shaft end of the closing and opening motor 44. A closing and opening block 46 is threadedly connected to the closing and opening screw rod 45. An opening and closing door 43 is fixed to the closing and opening block 46. A forming frame 42 is placed inside the mold pressing frame 6. A cleaning cavity 47 is provided at the left end of the forming frame 42. The front, rear and lower sides of the cleaning cavity 47 are all open. A first elastic component 61 is fixed inside the cleaning cavity 47. A first cleaning brush 62 is fixed to the lower end of the first elastic component 61. Two mounting plates 63 are fixed inside the cleaning cavity 47. A second elastic component 64 is fixed to the mounting plate 63. A second cleaning brush is fixed to the second elastic component 64. A second electromagnet 66 corresponding to the first cleaning brush 62 is fixed inside the cleaning cavity 47. A third electromagnet 65 corresponding to the second cleaning brush is fixed to the mounting plate 63.

[0060] With the above structure, during operation, the mixture enters the forming frame 42 and is hot-pressed using the hydraulic plate. After hot-pressing, the opening and closing motor 44 drives the opening and closing door 43 to open, allowing the forming frame 42 to be pulled out from the inlet and outlet. Since the forming frame 42 is removed together with the formed fireproof board, on the one hand, it can prevent the fireproof board from deforming due to incomplete cooling and forming, and on the other hand, it can prevent burrs around the fireproof board from falling on the film pressing frame 6 or scattering outside. Thus, when the forming frame enters the conveying mechanism 12, the guiding plate 13 can be used to guide and limit the forming frame, facilitating subsequent cutting and positioning, and not causing damage to the fireproof board, improving the processing quality.

[0061] The material distribution component includes a second electric telescopic rod 11. A material distribution box 55 is fixed to the end of the second electric telescopic rod 11. A feeding pipe 10 is fixed to the upper end of the material distribution box 55. The feeding pipe 10 is connected to the mixing mechanism 5 through a flexible hose. A feeding pump is arranged on the feeding pipe 10. The ends of third electric telescopic rods 56 are fixed to both sides of the material distribution box 55. A material discharging box 57 is fixed to the ends of the third electric telescopic rods 56. A row of evenly distributed material distribution pipes 58 are fixed to the bottom of the material discharging box 57. The left and right sides of the material distribution box 55 communicate with a conveying pipe 59. A sliding pipe 60 is slidably connected inside the conveying pipe 59. The other end of the sliding pipe 60 communicates with the material discharging box 57. A vibration cavity 48 is formed inside the film pressing frame 6. A vibration component is arranged inside the vibration cavity. The vibration component includes a vibration plate 49. The lower side of the vibration plate 49 is connected to the vibration cavity through vibration springs 52. A plurality of metal blocks 50 are fixed to the lower side of the vibration plate 49. A plurality of fourth electromagnets 51 corresponding to the metal blocks 50 are fixed to the lower end inside the vibration cavity. A plurality of fourth electric telescopic rods 53 are fixed to the lower end inside the vibration cavity. A support block 54 is fixed to the end of the fourth electric telescopic rod 53.

[0062] With the above structure, the mixture in the mixing mechanism is fed onto the material distribution pipes 58 through the material distribution box 55 and the material discharging box 57, and evenly discharged through a row of evenly distributed material distribution pipes 58. At the same time, the fourth electromagnets 51 are powered on and off, causing the vibration plate 49 to oscillate reciprocally, making the material on the die pressing frame evenly distributed and relatively solid. After the feeding is completed, through the cooperation of the second electric telescopic rod 11 and the third electric telescopic rod 56, the material distribution pipes 58 are moved out of the die pressing frame. At the same time, the fourth electric telescopic rod 53 drives the support block 54 to rise, causing the vibration plate 49 to abut against the upper end of the vibration cavity 48, improving the strength of the die pressing frame and ensuring the quality of the fireproof board during hot pressing. Embodiment

[0063] A manufacturing method of a high-strength bamboo fiber fireproof board includes the following steps: S1. Raw material preparation: Prepare corresponding weight parts of portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water according to the corresponding component raw material ratio. S2. Preparation of bamboo fiber raw materials: Use discarded bamboo and wooden frames and remove the metal components on the frames. S3. Place the cleaned bamboo and wooden frames on the feeding mechanism, send them into the crusher through the feeding mechanism, and crush them to obtain bamboo fibers. S4. Feed the bamboo fibers into the mixing mechanism according to a ratio, and at the same time add portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water into the mixing mechanism, and stir and mix them to obtain a mixture. S5. Evenly feed the mixture into the hot pressing mechanism through the material distributing mechanism, and at the same time use the oscillation component in the hot pressing mechanism to oscillate to ensure that the materials are compact and even, and then use the hot pressing mechanism to perform hot pressing and forming. S6. Take out the hot-pressed fireproof board through the forming frame, convey it through the conveying mechanism, and then perform air cooling or natural cooling. S7. Send the cooled fireproof board together with the forming frame to the trimming machine for trimming, and then take out the trimmed fireproof board for polishing operation.

[0064] The particle size of the bamboo fiber is 60 mesh.

[0065] The weight parts of the raw materials of each component are as follows: 180 parts of bamboo fiber, 15 parts of portland cement, 20 parts of magnesium oxide, 5 parts of flame retardant, 18 parts of modified potassium titanate whiskers, and 30 parts of water.

[0066] In step S5, the temperature of the hot pressing and forming is 160 °C, and the hot pressing pressure is 1.1 MPa.

[0067] The diameter of the potassium titanate whiskers is 0.6 μm, and the length is 6 μm.

[0068] In this embodiment, the equipment used for the preparation of the high-strength bamboo fiber fireproof board is the same as that in Embodiment 2, and the differences lie in the formulation ratio and processing conditions. Embodiment

[0069] A manufacturing method of a high-strength bamboo fiber fireproof board includes the following steps: S1. Raw material preparation: Prepare the corresponding weight parts of portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water according to the corresponding component raw material ratio. S2. Preparation of bamboo fiber raw materials: Use discarded bamboo and wooden frames and remove the metal components on the frames. S3. Place the cleaned bamboo and wooden frames on the feeding mechanism, send them into the crusher through the feeding mechanism, and crush them to obtain bamboo fibers. S4. Feed the bamboo fibers into the mixing mechanism according to a ratio, and at the same time add portland cement, magnesium oxide, flame retardant, modified potassium titanate whiskers, and water into the mixing mechanism, and stir and mix them to obtain a mixture. S5. Uniformly feed the mixture into the hot pressing mechanism through the material distributing mechanism. Meanwhile, use the oscillation component in the hot pressing mechanism to oscillate, ensuring that the materials are compact and evenly distributed. Then, use the hot pressing mechanism to perform hot pressing forming. S6. Take out the hot-pressed fireproof board through the forming frame, convey it through the conveying mechanism, and then perform air cooling or natural cooling. S7. Feed the cooled fireproof board together with the forming frame onto the edge trimming machine for edge trimming treatment. Then, take out the edge-trimmed fireproof board for polishing operation.

[0070] The particle size of the bamboo fiber is 100 mesh.

[0071] The weight parts of each component raw material are as follows: 120 parts of bamboo fiber, 25 parts of portland cement, 12 parts of magnesium oxide, 13 parts of flame retardant, 10 parts of modified potassium titanate whisker, and 45 parts of water.

[0072] In step S5, the temperature of hot pressing forming is 130 °C, and the hot pressing pressure is 1.7 MPa.

[0073] The diameter of the potassium titanate whisker is 0.3 μm, and the length is 17 μm.

[0074] In this embodiment, the equipment used for preparing the high-strength bamboo fiber fireproof board is the same as that in Embodiment 2, except for the different formulation ratios and processing conditions.

[0075] Experimental Example According to the test standards of the fireproof board, conduct temperature resistance tests, mechanical property tests, and anti-shedding aging tests on the fireproof boards prepared in Examples 1 to 4. The specific test results are as follows: Refractoriness (°C) Flexural strength (MPa) Example 1 1224 13.7 Example 2 1286 14.2 Example 3 1261 14.0 Example 4 1259 13.9 In Examples 1 and 2, the preparation devices for the fireproof board are different. However, the fire resistance temperature and flexural strength of the fireproof board in Example 2 are superior to those in Example 1. Therefore, using the fireproof board production device in the present invention can improve the fire resistance temperature and flexural strength of the fireproof board.

[0076] In Examples 3, 4, and 2, the preparation process conditions for the fireproof board are different. However, the fire resistance temperature and flexural strength of the fireproof board in Example 2 are superior to those in Examples 3 and 4. Therefore, different process conditions will also affect the fire resistance temperature and flexural strength of the fireproof board.

[0077] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A method for manufacturing a high-strength bamboo fiber fireproof board, characterized in that: The following steps are involved: S1. Raw material preparation: according to the corresponding raw material ratios, prepare corresponding weight portions of Portland cement, magnesium oxide, flame retardant, modified potassium titanate whisker, and water; S2. Preparation of bamboo fiber raw materials: Use discarded bamboo frames and remove the metal parts on the bamboo frames; S3, placing the cleaned bamboo frame on a feeding mechanism, feeding it into a pulverizer through the feeding mechanism, pulverizing it to obtain bamboo fiber; S4, feeding the bamboo fiber into the mixing mechanism according to the proportion, and adding silicate cement, magnesium oxide, flame retardant, modified potassium titanate whisker and water into the mixing mechanism, stirring and mixing to obtain a mixture; S5, the mixed material is evenly fed into the hot pressing mechanism through the material distribution mechanism, and at the same time, the mixed material is vibrated by the vibrating component in the hot pressing mechanism to ensure that the material is compact and even, and then the hot pressing mechanism is used for hot pressing molding; S6, taking out the hot-pressed fireproof board through the forming frame, conveying it through a conveying mechanism, and then air-cooling or naturally cooling it; S7. The cooled fireproof board is sent to a trimming machine together with the forming frame for trimming, and then the trimmed fireproof board is taken out for polishing.

2. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 1, characterized in that: The particle size of the bamboo fiber is 60-100 meshes.

3. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 1, characterized in that: The weight proportions of the raw materials of the components are: 120-180 parts of bamboo fiber, 15-25 parts of silicate cement, 12-20 parts of magnesium oxide, 5-13 parts of flame retardant, 10-18 parts of modified potassium titanate whisker and 30-45 parts of water.

4. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 1, characterized in that: The temperature of the hot pressing molding in step S5 is 130-160° C., and the hot pressing pressure is 1.1-1.7 MPa.

5. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 1, characterized in that: The potassium titanate whisker has a diameter of 0.3-0.6 μm and a length of 6-17 μm.

6. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 1, characterized in that: The equipment used in the steps S3-S6 is a fireproof board production device, which comprises a machine base (1), on which a loading mechanism (2), a crusher (3), a feeding mechanism (4), a mixing mechanism (5), a hot pressing mechanism and a conveying mechanism (12) are arranged, the crusher (3) and the mixing mechanism (5) are connected via the feeding mechanism (4), the mixing mechanism (5) and the hot pressing mechanism are connected via the material dividing mechanism, guide plates (13) are fixed to both the front and rear ends of the upper side of the conveying mechanism (12), the loading mechanism (2) comprises a support frame (14), the support frame (14) is fixed to the machine base (1), a support column (16) is rotatably connected to the support frame (14), a rotating motor (15) is fixed to the machine base (1), the output shaft end of the rotating motor (15) is fixedly connected to the support column (16), a support beam (17) is fixed to the upper end of the support column (16), a first winding assembly (18) is fixed to the support beam (17), and the first winding assembly (18) is 8) is wound with a steel wire rope (19), a lifting box (20) is fixed at the lower end of the steel wire rope (19), a sealing cover (32) is fixed at the lower end of the lifting box (20), and the sealing cover (32) can be tightly contacted with the feed hopper of the crusher (3), and lifting grooves (27) are opened on both sides of the inside of the lifting box (20), and a lifting motor (28) is fixed at the upper end of the lifting groove (27), and a lifting screw is fixed at the output shaft end of the lifting motor (28), and a threaded connection is formed on the lifting screw A lifting block (29) is provided, a lifting plate (30) is fixed on the lifting block (29), a grab plate (31) is slidably connected to the lower end of the lifting plate (30), a driving groove (38) is provided on the upper side of the grab plate (31), a driving motor (39) is fixed in the driving groove (38), a driving screw (40) is fixed to the output shaft end of the driving motor (39), a driving block (41) is threadedly connected to the driving screw (40), and the driving block (41) is fixedly connected to the lifting plate (30).

7. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 6, characterized in that: A second winding assembly (33) is fixed to the left side of the lower end of the lifting box (20), a shielding cloth (35) is wound around the second winding assembly (33), a counterweight rod (36) is fixed to the other end of the shielding cloth (35), and a third winding assembly (34) is fixed to the right side of the lower end of the lifting box (20), two connecting ropes (37) are wound around the third winding assembly (34), and the connecting ropes (37) are fixedly connected to both ends of the counterweight rod (36).

8. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 6, characterized in that: A dust suction chamber (24) is provided at the upper end of the interior of the lifting box (20), a plurality of dust suction ports are provided at the lower end of the dust suction chamber (24), a filter screen (25) is fixed inside the dust suction chamber (24), and a fan (26) is fixed at the left end of the dust suction chamber (24); A horn cover (21) is fixed to the side of the lifting box (20), a telescopic column (22) is fixed to the lower side of the support beam (17), and a first electromagnet (23) is fixed to the lower end of the telescopic column (22).

9. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 6, characterized in that: The hot pressing mechanism comprises a die frame and a hot pressing plate (9), the film pressing frame (6) is fixedly connected to the machine base (1), the front and rear sides of the film pressing frame (6) are both fixedly provided with a first electric telescopic rod (7), the telescopic end of the first electric telescopic rod (7) is fixedly connected to the hot pressing plate (9) through a support rod (8), an inlet and outlet are provided at the right end of the film pressing frame (6), the front and rear sides of the inlet and outlet are both provided with mounting grooves, an opening and closing motor (44) is fixed inside the mounting groove, an opening and closing screw (45) is fixed to the output shaft end of the opening and closing motor (44), an opening and closing block (46) is threadedly connected to the opening and closing screw (45), an opening and closing door (43) is fixed to the opening and closing block (46), a molding frame (43) is placed inside the film pressing frame (6), and a hot pressing mechanism (9) is fixedly connected to the machine base (1), and a hot pressing mechanism (9) is fixedly connected to the machine base (1), and a hot pressing mechanism (9) is fixedly connected to the machine base (1) ... 42), a cleaning chamber (47) is provided at the left end of the molding frame (42), the front and rear sides and the lower side of the cleaning chamber (47) are all open, a first elastic component (61) is fixed inside the cleaning chamber (47), a first cleaning brush (62) is fixed at the lower end of the first elastic component (61), two mounting plates (63) are fixed inside the cleaning chamber (47), a second elastic component (64) is fixed on the mounting plate (63), a second cleaning brush is fixed on the second elastic component (64), a second electromagnet (66) corresponding to the first cleaning brush (62) is fixed inside the cleaning chamber (47), and a third electromagnet (65) corresponding to the second cleaning brush is fixed on the mounting plate (63).

10. The method for manufacturing a high-strength bamboo fiber fireproof board according to claim 9, characterized in that: The material distribution assembly comprises a second electric telescopic rod (11), a material distribution box (55) is fixed at the end of the second electric telescopic rod (11), a material discharge pipe (10) is fixed at the upper end of the material distribution box (55), the material discharge pipe (10) is connected to the mixing mechanism (5) through a hose, a feeding pump is arranged on the material discharge pipe (10), third electric telescopic rods (56) are fixed at both sides of the material distribution box (55), a material discharge box (57) is fixed at the end, a row of evenly distributed material distribution pipes (58) is fixed at the bottom of the material discharge box (57), and the left and right sides of the material distribution box (55) are connected to a conveying pipe (59), and the interior of the conveying pipe (59) is slidably connected to a sliding Tube (60), the other end of the sliding tube (60) is connected to the unloading box (57), a vibration chamber (48) is opened inside the film pressing frame (6), an vibration component is arranged inside the vibration chamber, the vibration component includes a vibration plate (49), the lower side of the vibration plate (49) is connected to the vibration chamber through a vibration spring (52), a plurality of metal blocks (50) are fixed on the lower side of the vibration plate (49), a plurality of fourth electromagnets (51) corresponding to the metal blocks (50) are fixed at the lower end of the vibration chamber, a plurality of fourth electric telescopic rods (53) are fixed at the lower end of the vibration chamber, and a support block (54) is fixed at the end of the fourth electric telescopic rod (53).

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