Processing technology of environment-friendly healthy negative oxygen ion composite fireproof plate

Abstract

The invention provides a processing technology of an environment-friendly and healthy negative oxygen ion composite fireproof plate, belongs to the technical field of fireproof plate processing, and solves the technical problems that the plate is uneven due to the fact that uniform dehydration cannot be guaranteed in the prior art, and the thickness is difficult to reach the standard in the thickness detection stage. According to the processing technology of the environment-friendly and healthy negative oxygen ion composite fireproof plate, a fireproof plate processing line is included, and the fireproof plate processing line comprises a first conveying belt, a pulverizer, a first auger, a material collecting tank, a scaffold, a stirring machine, a second auger, a workshop laminate, a hot pressing forming machine, a bulldozing mechanism, a material conveying mechanism, a second conveying belt, a cooling mechanism and an edge grinding machine; the top end of the first conveying belt is fixed to the position above the pulverizer, a flange at the input end of the first auger is connected to the output end of the pulverizer, corrugated pipes are fixed to the output end of the first auger and a feeding port in the top of the material collecting tank, and the stirring machine is erected on a scaffold. The device has the advantages that the plate processing flatness is high, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fireproof board processing, and relates to a processing technology of an environmentally friendly composite fireproof board, in particular to a processing technology of an environmentally friendly healthy negative oxygen ion composite fireproof board. Background Art

[0002] Environmentally friendly composite fireproof board is a new type of composite material board made of natural bamboo powder, wood powder and other wood fiber materials as the main raw materials, combined with polymer resin and other auxiliary materials, through high temperature and high pressure processes. With its excellent fireproof performance, environmental protection characteristics and wide application fields, this board has become an important member of the modern building materials market. At present, the general fireproof board on the market is based on fireproof materials. The paste-like fireproof materials are poured into the mold, and then extruded / rolled into shape, solidified, dried in the drying room, trimmed, and packaged to be finished products. This kind of fireproof board is not strong, fragile, and easy to break.

[0003] After searching, it is found that a Chinese patent document discloses a process and equipment for preparing an environmentally friendly lightweight fireproof board [Application No.: 201410228336.3; Publication No.: CN104002366B]. The board blank of this environmentally friendly lightweight fireproof board basically becomes a semi-finished product after steam curing. When the board blank is out of the kettle, steam needs to be discharged. The steam is collected into a steam storage tank by a steam recovery system and used in a drying and shaping system. After drying and shaping, the semi-finished product can be directly used, surface treated or further processed, etc., to prepare a lightweight fireproof board with strong impact resistance.

[0004] Although the environmentally friendly lightweight fireproof board preparation process and equipment disclosed in this patent divides the dehydration step into four parts, after efficient dehydration, the excess moisture in the board embryo has been reduced to a minimum, thereby greatly reducing the subsequent resting time. However, the environmentally friendly lightweight fireproof board preparation process and equipment realizes raw material integration through dehydration in the board forming stage, but cannot ensure uniform dehydration, resulting in uneven boards, and it is difficult to meet the standards in the thickness detection stage, resulting in rework, low product batch quality, and low production efficiency. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a processing technology for an environmentally friendly and healthy negative oxygen ion composite fireproof board. The technical problem to be solved by the invention is: how to achieve high flatness in board processing and improve production efficiency.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board comprises the following steps: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2, crushing: crushing the secondary wood, and transferring it to the mixer after crushing; the main power of the crusher is 35-55kW, and the finished product particle size is 40-100 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 100-160rmp, and the stirring time is 30-45min; S4, hot pressing molding: the negative oxygen ion composite fireproof board raw material mixture is flattened between the upper and lower molds, the initial flattening thickness is 5-17mm, after the initial flattening, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the negative oxygen ion composite fireproof board raw material mixture, the negative oxygen ion composite fireproof board raw material mixture is flattened on the glass fiber mesh cloth for the second time, the second flattening thickness is 5-17mm, and hot pressing molding is performed after the second flattening to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 60-95MPa, the temperature is 100℃-150℃, and the hot pressing time is 20-35min; S5. Cooling: The upper and lower surfaces of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 3-10m / s, and the air supply volume is 145-200m³ / min; S6, edge grinding: grinding and polishing the four sides of the negative oxygen ion composite fireproof board; the feed speed is 5-20mm / min, and the grinding depth is 0.1-2mm.

[0007] The raw material mixture of the negative oxygen ion composite fireproof board is composed of the following raw materials in parts by mass: 20-35 parts of wood powder, 6-15 parts of bamboo powder, 45-80 parts of magnesium oxide, 35-85 parts of magnesium chloride, 110-140 parts of light-burned powder, 0.8-1.5 parts of toughening agent, 0.2-1 parts of modifier, 0.3-0.75 parts of water repellent and 10-35 parts of expanded perlite.

[0008] The recycled wood is washed by a high-pressure water gun and dried naturally; and both the initial tiling and the secondary tiling are leveled.

[0009] The air outlet ends of the industrial fan are respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing, and the industrial fan blows air to both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 10-25 minutes.

[0010] The equipment used in steps S2 to S6 is a fireproof board processing line, which includes a first conveyor belt, a crusher, a first auger, a collection tank, a scaffolding, a mixer, a second auger, a workshop layer, a hot pressing machine, a flattening mechanism, a feeding mechanism, a second conveyor belt, a cooling mechanism and an edge grinder. The top of the first conveyor belt is fixed at a position above the crusher, the first auger input end flange is connected to the crusher output end, a corrugated pipe is fixed to the first auger output end and the feed port at the top of the collection tank, the mixer is mounted on the scaffolding, the mixer output end is flange-connected to the second auger input end, the second auger output end extends to a position above the workshop layer, the two ends of the second conveyor belt are respectively arranged between the hot pressing machine and the cooling mechanism, there are two feeding mechanisms, and the two feeding mechanisms are respectively arranged at positions above and below the workshop layer.

[0011] With the above structure, after the recycled wood is manually removed of unnecessary non-wood materials such as nails, it is washed by an external high-pressure water gun and then dried. After drying, it is conveyed to the entrance of the crusher through the first conveyor belt. After being crushed into wood powder, it is successively sent to the aggregate tank through the first auger and the corrugated pipe for storage as one of the raw materials for fireproof board. The raw materials for fireproof board are taken and added into the mixer manually through the scaffolding to mix evenly. The second auger transfers the evenly mixed raw materials to the workshop floor. The push-flattening mechanism is set up on the hot pressing machine. The raw materials are manually spread as evenly as possible on the lower mold of the hot pressing machine, and further leveled by the push-flattening mechanism. After leveling, the push-flattening mechanism is evacuated. After hot pressing, the push-flattening mechanism is pushed to the hot pressing machine. The push-flattening mechanism can The board is pushed onto the feeding mechanism, and the feeding mechanism moves the fireproof board to the cooling mechanism through the second conveyor belt and another feeding mechanism in turn. After cooling, it is continuously transferred to the edge grinder through the feeding mechanism to complete the processing of the environmentally friendly and healthy negative oxygen ion composite fireproof board. A leveling step is added before hot pressing to make the laying of the board raw materials more even, the flatness of the formed board is stronger, the fit of the fireproof board in flat installation is improved, and the gap with the installation surface is reduced to further enhance its strength and stability. The wood powder in the process adopts waste, especially wooden products mainly composed of waste in rural construction, which are recycled for the second time to form raw materials, thereby improving environmental protection. Natural materials such as wood powder and bamboo powder improve its health and safety during use.

[0012] The push-flattening mechanism is arranged on the hot pressing forming machine, and the push-flattening mechanism includes a first base plate, four first universal wheels are installed on the bottom of the first base plate by bolts, a connecting plate is welded on the front of the top of the first base plate, and two side plates are welded on the rear end of the connecting plate, the two side plates are distributed on the left and right, and the opposite sides and the top of the side plates are respectively provided with a first slide groove and a second slide groove, a sliding frame is penetrated by the first slide groove and the second slide groove, an electric telescopic rod is fixed to the top of the sliding frame by bolts, a scraper is fixed to the bottom of the electric telescopic rod by bolts, and the scraper is made of stainless steel, a linear motor is installed on the right end of the right side plate by bolts, and the output end of the linear motor is fixedly connected to the right side of the sliding frame.

[0013] By adopting the above structure, the first universal wheel can be rotated to move the position by pushing the connecting plate, so that the side plate is located on the surface of the lower mold of the hot pressing molding machine. The electric telescopic rod is operated according to the required height of the initial paving and the secondary paving, and the scraper moves to the required height with the electric telescopic rod, and the linear motor drives the sliding frame to slide back and forth in the first slide groove and the second slide groove, and the scraper moves with the electric telescopic rod to scrape the raw materials flat. After hot pressing, the linear motor indirectly drives the scraper to push the high-temperature fireproof board to the material transmission mechanism, and limits the powder from spreading left and right through the side plate. The electric telescopic rod controls the scraper to be close to the bottom edge of the lower mold of the hot pressing molding machine, pushes the powder at the rear edge forward, and pushes the powder at the front edge backward to avoid spreading of the powder at the front and rear edges, thereby controlling the thickness of the powder at the front and rear edges, avoiding the situation where the edge of the board is thin, and improving the pressure resistance of the fireproof board. The electric telescopic rod makes the height of the powder for the initial paving and the secondary paving adjustable, and the scraper moves back and forth to improve the uniformity of the powder paving thickness, so that the specific thickness of the formed board is more accurate and easy to control, thereby improving the quality of the finished product.

[0014] A placement plate is welded at the middle position of the rear end of the connecting plate, a material collection box is placed on the placement plate, a placement groove is opened at the rear position of the top of the first bottom plate, a material collection box is clamped in the placement groove, and the hot pressing molding machine is located between the material collection box and the material collection box.

[0015] With the above structure, the aggregate box is placed on the placement plate and clamped between the connecting plate and the outer shell of the hot pressing machine. There is a protrusion at the bottom of the aggregate box that fits with the placement groove, and the installation can be achieved by fitting between the protrusion and the placement groove. The aggregate box and the aggregate box are respectively located on the front and rear sides of the position below the lower mold of the hot pressing machine. The excess powder scraped out by the scraper during the leveling process is collected, which reduces the waste of raw materials, saves production costs, and improves the environmental protection during the processing of fireproof boards.

[0016] The transmission mechanism comprises a second base plate, a first slide rail and a second slide rail are fixedly provided with a group of diagonal groups at the top of the second base plate, and a third slide rail is fixedly provided with another group of diagonal groups at the top of the second base plate, and a first motor is fixedly provided at the top of the first slide rail, and a first lead screw is keyed to an output end of the first motor, and a first synchronous wheel is keyed to a lower position of the first lead screw, and a second lead screw is rotatably connected to the second slide rail, and a second synchronous wheel is keyed to a lower position of the second lead screw, and a first synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel, and a sliding frame is threadedly connected to a sliding frame, and a second motor is fixedly provided at a position of an outer wall of the sliding frame near the first slide rail, and a conveying roller is fixedly provided at an output end of the second motor, and a plurality of conveying rollers are keyed to a sprocket at one end of the plurality of conveying rollers away from the second motor, and chains are sleeved on the plurality of sprockets, and four second universal wheels are installed at the bottom of the second base plate by bolts, and sliding rods are fixed in the two third slide rails, and the sliding rods are penetrated into a position of the sliding frame near a diagonal position of the top of the third slide rail.

[0017] By adopting the above structure, the second universal wheel can be rotated by pushing the slide rail and other structures to move the material transmission mechanism as a whole. The first motor drives the first screw to rotate, and the first synchronous wheel rotates with the first screw. The first synchronous belt transmits the rotation of the first synchronous wheel to the second synchronous wheel, and the second screw rotates with the second synchronous wheel. The sliding frame is threadedly connected by two screws at the same time to produce a limit and does not rotate with the screw. The sliding frame and the first screw and the second screw generate thread transmission. The sliding frame realizes up and down linear motion through thread transmission, driving the conveying roller thereon to realize height adjustment. The second motor drives a conveying roller connected to it to rotate, and the sprocket behind the conveying roller rotates with the conveying roller. The chain transmits the rotation to other sprockets through meshing, thereby realizing the same-direction rotation of multiple conveying rollers and realizing the transmission of the fireproof plate above the conveying roller. Since the first screw and the second screw are threadedly connected at the diagonal corners of the sliding frame at the same time, the sliding frame can move up and down The movement is more stable, and a stronger supporting force can be achieved for the fireproof board. The height of the conveying roller can be changed through threaded transmission, that is, the conveying height of the fireproof board is adjustable to adapt to the height of different equipment. The high-temperature fireproof board after hot pressing is conveyed to the cooling mechanism to avoid direct contact between the staff with the high-temperature fireproof board, and reduce the personal risk in the processing of environmentally friendly and healthy negative oxygen ion composite fireproof board. The material is conveyed between the cooling mechanism and the edge grinder through the material conveying mechanism, which reduces the staff's handling of the board and avoids falls and bumps caused by handling errors, thereby improving the integrity of the finished product, saving manpower, and improving production efficiency. While the sliding frame realizes up and down linear motion through threaded transmission, the sliding frame slides on the surface of the sliding rod, increasing the limit of the sliding frame, making its linear motion more stable, and the friction between the sliding frame and the sliding rod increases the upward supporting force of the sliding frame, making the material transmission of the board more stable.

[0018] The cooling mechanism includes a fuselage, a third motor is fixed on the upper outer wall of the fuselage, a driving roller is fixed on the output end of the third motor, a third synchronous wheel is keyed to the end of the driving roller away from the third motor, there are multiple third synchronous wheels, the remaining third synchronous wheels are keyed to driven rollers, the driven roller is rotatably connected to the fuselage, a second synchronous belt is sleeved on the third synchronous wheel, a first metal mesh is fixed on the middle inner wall of the fuselage, a first industrial fan is installed on the first metal mesh by bolts, an air outlet is opened at the rear end of the fuselage above the first metal mesh, a wind tube is fixed in the air outlet, a second metal mesh is fixed to the end of the wind tube away from the air outlet, and a second industrial fan is fixed to the second metal mesh by bolts.

[0019] With the above structure, when the plate is continuously conveyed above the driving roller and the driven roller, the air outlet is the maximum air circulation channel, the wind from the first industrial fan blows air to cool down the bottom of the plate, and the wind from the first industrial fan enters the wind tube through the air outlet and is blown out simultaneously with the wind from the second industrial fan. The third motor rotates the driving roller, and the third synchronous wheel key-connected to the driving roller rotates with the driving roller. The second synchronous belt realizes the same-direction transmission of the third synchronous wheel through friction, and the remaining third synchronous wheels drive the driven roller to rotate, thereby realizing the transmission of the fireproof plate thereon. By setting the wind tube, the wind from below the fireproof plate is guided to above the fireproof plate, thereby improving the utilization rate of the air volume, blowing air to cool down both sides of the fireproof plate, and utilizing the wind from the first industrial fan to increase the air supply to above the plate, thereby accelerating the cooling efficiency.

[0020] An infusion hose is placed at the bottom of the inner wall of the fuselage, and both ends of the infusion hose extend to the front end of the outer wall of the fuselage. The two ends of the infusion hose are connected to the coolant tank through a circulation pump in turn.

[0021] With the above structure, the circulating pump draws out the coolant in the coolant tank and circulates it in the infusion hose. The coolant tank is provided with an inlet hole for adding coolant (not shown in common technical drawings). Most of the infusion hose is coiled at the bottom of the inner wall of the fuselage, and the air at the bottom of the inner wall of the fuselage (i.e., the air below the first industrial fan) is cooled. During the rotation process, the first industrial fan forms a negative pressure to inhale the cold air below it and discharge it to the bottom of the fireproof board and the air duct, thereby further achieving cooling, improving cooling efficiency, and improving production efficiency.

[0022] Compared with the existing technology, the processing technology of this environmentally friendly and healthy negative oxygen ion composite fireproof board has the following advantages: 1. This process adds a leveling step before hot pressing to make the raw materials of the board more evenly laid, the flatness of the formed board stronger, the fit of the fireproof board in flat installation is improved, and the gap with the installation surface is reduced to further enhance its strength and stability. The wood powder in the process uses waste, especially wooden products mainly composed of waste in rural construction, which are recycled to form raw materials to improve environmental protection. Natural materials such as wood powder and bamboo powder improve their health and safety during use.

[0023] 2. After hot pressing, the linear motor indirectly drives the scraper to push the high-temperature fireproof board to the material conveying mechanism, and the side plate is used to limit the left and right spreading of the powder. The electric telescopic rod controls the scraper to be close to the bottom edge of the lower mold of the hot pressing molding machine, and pushes the rear edge powder forward and the front edge powder backward to avoid the front and rear edge powder from spreading, thereby realizing the control of the front and rear edge powder thickness, avoiding the thin edge of the board, and improving the compression resistance of the fireproof board. The electric telescopic rod makes the height of the initial flattening and the secondary flattening of the powder adjustable, and the scraper moves forward and backward to improve the uniformity of the powder flattening thickness, so that the specific thickness of the formed board is more accurate and easy to grasp, thereby improving the quality of the finished product. At the same time, in the leveling mechanism, the collection box and the collection box are respectively located on the front and rear sides of the lower mold of the hot pressing molding machine, and the excess powder scraped out by the scraper during the leveling process is collected to reduce the waste of raw materials, save production costs, and improve the environmental protection during the processing of fireproof boards.

[0024] 3. The chain in the feeding mechanism transmits the rotation to other sprockets through meshing, so that multiple conveying rollers rotate in the same direction and the fireproof board above the conveying roller is conveyed. Since the first lead screw and the second lead screw are simultaneously threadedly connected at the diagonal angle of the sliding frame, the up and down movement of the sliding frame is more stable, and a stronger supporting force can be achieved for the fireproof board. The height of the conveying roller is changed by thread transmission, that is, the conveying height of the fireproof board is adjustable, which can adapt to the height of different equipment, and the high-temperature fireproof board after hot pressing is conveyed to the cooling mechanism to avoid direct contact between the staff and the high-temperature fireproof board, thereby reducing the personal risk in the processing of the environmentally friendly and healthy negative oxygen ion composite fireproof board. The material is conveyed between the cooling mechanism and the edge grinder through the feeding mechanism, which reduces the staff from carrying the board and avoids falling and bumping caused by handling errors, thereby improving the integrity of the finished product, saving manpower, and improving production efficiency. At the same time, in the feeding mechanism, the sliding frame slides on the surface of the sliding rod, increasing the limit of the sliding frame, making its linear motion more stable, and the friction between the sliding frame and the sliding rod increases the upward supporting force of the sliding frame, making the material transmission of the board more stable.

[0025] 4. By setting a cooling mechanism, when the plate is continuously conveyed above the driving roller and the driven roller, the air outlet is the maximum air circulation channel, the wind of the first industrial fan blows air to cool the bottom of the plate, and the wind of the first industrial fan enters the wind tube through the air outlet, and is blown out simultaneously with the wind of the second industrial fan. The wind tube is set to guide the wind below the fireproof board to the top of the fireproof board, so as to improve the utilization rate of the air volume, blow air to cool both sides of the fireproof board, and use the wind of the first industrial fan to increase the air supply to the top of the plate, accelerate the cooling efficiency, and set a circulating coolant under the first industrial fan. Most of the infusion hose is coiled at the bottom of the inner wall of the fuselage to cool the air at the bottom of the inner wall of the fuselage (that is, the air under the first industrial fan). The first industrial fan forms a negative pressure during rotation to inhale the cold air below it and discharge it to the bottom of the fireproof board and the wind tube, so as to further achieve cooling, improve cooling efficiency, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the processing steps of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the present invention.

[0028] Figure 3 It is a structural schematic diagram of the environmentally friendly and healthy negative oxygen ion composite fireproof board processing line of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the hot pressing molding machine part in the present invention.

[0030] Figure 5 It is a structural schematic diagram of the push-flattening mechanism part in the present invention.

[0031] Figure 6 It is a structural schematic diagram of the sliding frame part in the present invention.

[0032] Figure 7 It is a structural schematic diagram of the first chute part in the present invention.

[0033] Figure 8 It is a structural schematic diagram of the material transfer mechanism part in the present invention.

[0034] Fig. 9 It is a structural schematic diagram of the second synchronous wheel part in the present invention.

[0035] Fig.10 It is a schematic structural diagram of the cooling mechanism part in the present invention.

[0036] Fig.11 It is a schematic structural diagram of the driven roller part in the present invention.

[0037] Fig.12 It is a structural schematic diagram of the infusion hose part of the present invention.

[0038] Fig.13 It is a structural schematic diagram of the air cylinder part of the present invention.

[0039] Fig.14 This is a comparison table of experimental results.

[0040] In the figure, 1, first conveyor belt; 2, crusher; 3, first auger; 4, bellows; 5, aggregate tank; 6, scaffolding; 7, mixer; 8, second auger; 9, workshop layer; 10, hot pressing machine; 11, push-flattening mechanism; 1101, first bottom plate; 1102, first universal wheel; 1103, connecting plate; 1104, side plate; 1105, first chute; 1106, second chute; 1107, second chute; 1108, first chute; 1109, second chute; 1110 07, sliding frame; 1108, electric telescopic rod; 1109, scraper; 1110, linear motor; 1111, placement plate; 1112, material collection box; 1113, placement slot; 1114, material collection box; 12, material transmission mechanism; 1201, first slide rail; 1202, first motor; 1203, first lead screw; 1204, first synchronous wheel; 1205, first synchronous belt; 1206, second synchronous wheel; 1207, second lead screw; 1208, second slide rail; 1209, slide frame; 1210, second motor; 1211, conveying roller; 1212, sprocket wheel; 1213, chain; 1214, slide bar; 1215, third slide rail; 1216, second universal wheel; 1217, second bottom plate; 13, second conveyor belt; 14, cooling mechanism; 1401, fuselage; 1402, first metal mesh ; 1403, first industrial fan; 1404, air duct; 1405, infusion hose; 1406, circulating pump; 1407, coolant tank; 1408, third motor; 1409, driving roller; 1410, driven roller; 1411, third synchronous wheel; 1412, second synchronous belt; 1413, air outlet; 1414, second metal mesh; 1415, second industrial fan; 15, edge grinder. DETAILED DESCRIPTION

[0041] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Example

[0042] like Figure 1 As shown, the processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board includes the following steps: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2. Crushing: Crushing the wood for secondary use, and then transferring it to the mixer; the main power of the crusher is 45kW, and the finished product particle size is 60 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 145rmp and the stirring time is 40min; S4, hot pressing molding: the raw material mixture of the negative oxygen ion composite fireproof board is spread between the upper and lower molds, and the initial spreading thickness is 7mm. After the initial spreading, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the raw material mixture of the negative oxygen ion composite fireproof board. The raw material mixture of the negative oxygen ion composite fireproof board is spread on the glass fiber mesh cloth for the second time, and the second spreading thickness is 7mm. After the second spreading, hot pressing is performed to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 85MPa, the temperature is 130°C, and the hot pressing time is 30min; S5. Cooling: Both the upper and lower sides of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 8m / s, and the air supply volume is 150m³ / min; S6. Edge grinding: Grind and polish the four sides of the negative oxygen ion composite fireproof board; the feed speed is 10mm / min and the grinding depth is 0.45mm.

[0043] The raw materials of the negative oxygen ion composite fireproof board are composed of the following raw materials in parts by mass: 31 parts of wood flour, 7 parts of bamboo flour, 68 parts of magnesium oxide, 59 parts of magnesium chloride, 124 parts of light-burned powder, 1.1 parts of toughening agent, 0.75 parts of modifier, 0.55 parts of water repellent, and 22 parts of expanded perlite.

[0044] The recycled wood is washed with a high-pressure water gun and dried naturally; it is leveled after the initial tiling and the secondary tiling.

[0045] The air outlet of the industrial fan is respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing. The industrial fan blows air on both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 20 minutes.

[0046] The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board in this embodiment uses existing conventional equipment. Example

[0047] A processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board comprises the following steps: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2. Crushing: Crushing the wood for secondary use, and then transferring it to the mixer; the main power of the crusher is 45kW, and the finished product particle size is 60 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 145rmp and the stirring time is 40min; S4, hot pressing molding: the raw material mixture of the negative oxygen ion composite fireproof board is spread between the upper and lower molds, and the initial spreading thickness is 7mm. After the initial spreading, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the raw material mixture of the negative oxygen ion composite fireproof board. The raw material mixture of the negative oxygen ion composite fireproof board is spread on the glass fiber mesh cloth for the second time, and the second spreading thickness is 7mm. After the second spreading, hot pressing is performed to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 85MPa, the temperature is 130°C, and the hot pressing time is 30min; S5. Cooling: Both the upper and lower sides of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 8m / s, and the air supply volume is 150m³ / min; S6. Edge grinding: Grind and polish the four sides of the negative oxygen ion composite fireproof board; the feed speed is 10mm / min and the grinding depth is 0.45mm.

[0048] The raw materials of the negative oxygen ion composite fireproof board are composed of the following raw materials in parts by mass: 31 parts of wood flour, 7 parts of bamboo flour, 68 parts of magnesium oxide, 59 parts of magnesium chloride, 124 parts of light-burned powder, 1.1 parts of toughening agent, 0.75 parts of modifier, 0.55 parts of water repellent, and 22 parts of expanded perlite.

[0049] The recycled wood is washed with a high-pressure water gun and dried naturally; it is leveled after the initial tiling and the secondary tiling.

[0050] The air outlet of the industrial fan is respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing. The industrial fan blows air on both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 20 minutes.

[0051] like Figure 2-13As shown, the equipment used in steps S2 to S6 is a fireproof board processing line, which includes a first conveyor belt 1, a crusher 2, a first auger 3, a collection tank 5, a scaffolding 6, a mixer 7, a second auger 8, a workshop layer 9, a hot pressing molding machine 10, a flattening mechanism 11, a feeding mechanism 12, a second conveyor belt 13, a cooling mechanism 14 and an edge grinder 15. The top of the first conveyor belt 1 is fixed at a position above the crusher 2, the input end of the first auger 3 is flange-connected to the output end of the crusher 2, a bellows 4 is fixed to the output end of the first auger 3 and the top feed port of the collection tank 5, the mixer 7 is mounted on the scaffolding 6, the output end of the mixer 7 is flange-connected to the input end of the second auger 8, the output end of the second auger 8 extends to a position above the workshop layer 9, the two ends of the second conveyor belt 13 are respectively arranged between the hot pressing molding machine 10 and the cooling mechanism 14, the number of the feeding mechanisms 12 is two, and the two feeding mechanisms 12 are respectively arranged at positions above and below the workshop layer 9.

[0052] In the present embodiment, the first conveyor belt 1 and the second conveyor belt 13 are both common existing conveyor belts composed of motors, sprockets, chains, belts, etc., the crusher 2 is an existing vertical wood crusher, the collecting tank 5 is a tank body with a valve on the bottom of stainless steel for waterproofing and moisture-proofing, the mixer 7 is a paddle mixer with a common motor and a stirring paddle, the hot pressing molding machine 10, the first auger 3, the second auger 8, and the edge grinder 15 are all existing technologies and will not be repeated hereinafter. After the recycled wood is manually removed from the excess non-wood materials such as nails, it is rinsed with an external high-pressure water gun and then dried. After drying, it is transmitted to the entrance of the crusher 2 through the first conveyor belt 1, and after being crushed into wood powder, it is sequentially sent to the collecting tank 5 through the first auger 3 and the corrugated pipe 4 for storage as one of the raw materials for fireproof board. The raw materials for fireproof board are manually added into the mixer 7 through the scaffolding 6 for uniform mixing, and the second auger 8 transmits the uniformly mixed raw materials to the workshop layer 9, and the push-flattening mechanism 11 is set up on the hot pressing molding machine 10, and the raw materials are manually The material is spread as evenly as possible on the lower mold of the hot pressing molding machine 10, and is further leveled by the flattening mechanism 11. The flattening mechanism 11 is evacuated after leveling. After hot pressing, the flattening mechanism 11 is pushed to the hot pressing molding machine 10. The flattening mechanism 11 can push the formed plate to the feeding mechanism 12. The feeding mechanism 12 moves the fireproof board to the cooling mechanism 14 through the second conveyor belt 13 and another feeding mechanism 12 in sequence. After cooling, it is continuously transferred to the edge grinder 15 through the feeding mechanism 12 to complete the processing of the environmentally friendly and healthy negative oxygen ion composite fireproof board. A leveling step is added before hot pressing to make the raw material of the plate more evenly laid, the flatness of the formed plate is stronger, the fit of the fireproof plate in flat installation is improved, and the gap with the installation surface can be reduced to further enhance its strength and stability. The wood powder in the process uses waste, especially wooden products mainly composed of waste in rural construction, which are recycled to form raw materials to improve environmental protection. Natural materials such as wood powder and bamboo powder improve their health and safety during use.

[0053] The push-flattening mechanism 11 is arranged on the hot pressing forming machine 10, and the push-flattening mechanism 11 includes a first bottom plate 1101, and four first universal wheels 1102 are installed at the bottom of the first bottom plate 1101 by bolts. A connecting plate 1103 is welded to the front of the top of the first bottom plate 1101, and two side plates 1104 are welded to the upper rear end of the connecting plate 1103. The two side plates 1104 are distributed left and right, and the opposite sides and the top of the side plates 1104 are respectively provided with a first slide groove 1105 and a second slide groove 1106, and a sliding frame 1107 is penetrated in the first slide groove 1105 and the second slide groove 1106. An electric telescopic rod 1108 is fixed to the top of the sliding frame 1107 by bolts, and a scraper 1109 is fixed to the bottom of the electric telescopic rod 1108 by bolts. The scraper 1109 is made of stainless steel, and a linear motor 1110 is installed to the right end of the right side plate 1104 by bolts, and the output end of the linear motor 1110 is fixedly connected to the right side of the sliding frame 1107.

[0054] In this embodiment, the electric telescopic rod 1108 and the linear motor 1110 are both prior arts. The first universal wheel 1102 can be rotated to move the position by pushing the connecting plate 1103, so that the side plate 1104 is located on the lower mold surface of the hot pressing molding machine 10. The electric telescopic rod 1108 is operated according to the required heights for the initial paving and the secondary paving. The scraper 119 moves to the required height with the electric telescopic rod 1108. The linear motor 1110 drives the sliding frame 1107 to slide back and forth in the first slide groove 1105 and the second slide groove 1106. The scraper 1109 moves with the electric telescopic rod 1108 to flatten the raw materials. After hot pressing, the linear motor 1110 indirectly The scraper 1109 is driven to push the high-temperature fireproof board to the material conveying mechanism 12, and the side plate 1104 is used to limit the powder from spreading left and right. The electric telescopic rod 1108 controls the scraper 1109 to be close to the bottom edge of the lower mold of the hot pressing molding machine 10, and pushes the powder at the rear edge forward and the powder at the front edge backward to avoid the powder from spreading at the front and rear edges, thereby controlling the thickness of the powder at the front and rear edges, avoiding the situation where the edge of the board is thin, and improving the compression resistance of the fireproof board. The electric telescopic rod 1108 makes the height of the initial flat laying and the secondary flat laying of the powder adjustable, and the scraper 1109 moves forward and backward to improve the uniformity of the powder laying thickness, so that the specific thickness of the formed board is more accurate and easy to control, thereby improving the quality of the finished product.

[0055] A placement plate 1111 is welded to the middle position at the rear end of the connecting plate 1103, and a material collection box 1112 is placed on the placement plate 1111. A placement groove 1113 is opened at the rear position of the top of the first bottom plate 1101, and a material collection box 1114 is clamped in the placement groove 1113. The hot pressing molding machine 10 is located between the material collection box 1112 and the material collection box 1114.

[0056] In this embodiment, the collection box 1112 is placed on the placement plate 1111 and clamped between the connecting plate 1103 and the outer shell of the hot pressing molding machine 10. The bottom of the collection box 1114 has a protrusion that fits with the placement groove, and the installation can be achieved by the fit between the protrusion and the placement groove 1113. The collection box 1112 and the collection box 1114 are respectively located on the front and rear sides of the position below the lower mold of the hot pressing molding machine 10, and the excess powder scraped out by the scraper 1109 during the leveling process is collected, thereby reducing the waste of raw materials, saving production costs, and improving the environmental protection of the fireproof board processing process.

[0057] The material transmission mechanism 12 includes a second bottom plate 1217, one of the diagonal groups on the top of the second bottom plate 1217 is respectively fixed with a first slide rail 1201 and a second slide rail 1208, another diagonal group on the top of the second bottom plate 1217 is fixed with a third slide rail 1215, a first motor 1202 is fixed on the top of the first slide rail 1201, a first lead screw 1203 is keyed to the output end of the first motor 1202, a first synchronous wheel 1204 is keyed to the lower position of the first lead screw 1203, a second lead screw 1207 is rotatably connected to the second slide rail 1208, a second lead screw 1207 is keyed to the lower position of the second lead screw 1207, and the first synchronous wheel 1206 is keyed to the lower position of the first lead screw 1206. The first synchronous belt 1205 is sleeved on the step wheel 1204 and the second synchronous wheel 1206, the first lead screw 1203 and the second lead screw 1207 are threadedly connected with a sliding frame 1209, a second motor 1210 is fixed to the outer wall of the sliding frame 1209 near the first slide rail 1201, a conveying roller 1211 is fixed to the output end of the second motor 1210, and there are multiple conveying rollers 1211. One end of the multiple conveying rollers 1211 away from the second motor 1210 is keyed to a sprocket 1212, and a chain 1213 is sleeved on the multiple sprockets 1212. Four second universal wheels 1216 are installed on the bottom of the second base plate 1217 by bolts.

[0058] In this embodiment, the first motor 1202, the second motor 1210, and the first synchronous belt 1205 transmit the power of the first synchronous wheel 1204 to the second synchronous wheel 1206 through friction, which are all prior arts. The second universal wheel 1216 can be rotated by pushing the slide rail and other structures to move the material transmission mechanism as a whole. The first motor 1202 drives the first lead screw 1203 to rotate, and the first synchronous wheel 1205 rotates with the first lead screw 1203. The first synchronous belt 1205 converts the rotation of the first synchronous wheel 1205 into The second synchronous wheel 1206 is moved to the second synchronous wheel 1206, and the second lead screw 1207 rotates with the second synchronous wheel 1206. The sliding frame 1209 is threadedly connected by two lead screws at the same time to generate a limit and does not rotate with the lead screws. The sliding frame 1209 generates a threaded transmission with the first lead screw 1203 and the second lead screw 1207. The sliding frame 1209 realizes up and down linear motion through the threaded transmission, driving the conveying roller 1211 thereon to realize height adjustment. The second motor 1207 drives a conveying roller 1211 connected thereto to rotate, and the conveying roller 1211 The rear sprocket 1212 rotates with the conveying roller 1211, and the chain 1213 transmits the rotation to other sprockets 1212 through meshing, so that multiple conveying rollers 1211 rotate in the same direction, and the fireproof board above the conveying roller 1211 is conveyed. Since the first lead screw 1203 and the second lead screw 1207 are simultaneously threadedly connected at the diagonal of the sliding frame 1209, the up and down movement of the sliding frame 1209 is more stable, and a stronger supporting force can be achieved for the fireproof board. The height of the conveying roller 1211 can be changed by thread transmission, that is, the conveying height of the fireproof board can be adjusted to adapt to the height of different equipment, and the high-temperature fireproof board after hot pressing is conveyed to the cooling mechanism 14 to avoid direct contact between the staff and the high-temperature fireproof board, thereby reducing the personal risk in the processing of the environmentally friendly and healthy negative oxygen ion composite fireproof board. The material is conveyed between the cooling mechanism 14 and the edge grinder 15 through the conveying mechanism 12, which reduces the staff's handling of the board, avoids falling and bumping caused by handling errors, thereby improving the integrity of the finished product, saving manpower, and improving production efficiency.

[0059] A slide bar 1214 is fixed inside each of the two third slide rails 1215 . The slide bar 1214 is disposed in the slide frame 1209 at a position diagonally opposite to the top of the third slide rail 1215 .

[0060] In this embodiment, while the sliding frame 1209 realizes up and down linear motion through threaded transmission, the sliding frame 1209 slides on the surface of the sliding rod 1214, increasing the limit of the sliding frame 1209, making its linear motion more stable, and the upward supporting force of the sliding frame 1209 is increased through the friction force between the sliding frame 1209 and the sliding rod 1214, making the material transfer of the plate more stable.

[0061] The cooling mechanism 14 includes a body 1401, a third motor 1408 is fixed at an upper position of the outer wall of the body 1401, a driving roller 1409 is fixed to the output end of the third motor 1408, and a third synchronous wheel 1411 is keyed to one end of the driving roller 1409 away from the third motor 1408. There are multiple third synchronous wheels 1411, and the other third synchronous wheels 1411 are keyed to a driven roller 1410. The driven roller 1410 is rotatably connected to the body 1401, and a second synchronous belt is sleeved on the third synchronous wheel 1411. 1412, a first metal mesh 1402 is fixed on the middle position of the inner wall of the fuselage 1401, a first industrial fan 1403 is installed on the first metal mesh 1402 by bolts, an air outlet 1413 is opened at the rear end of the fuselage 1401 above the first metal mesh 1402, a wind tube 1404 is fixed in the air outlet 1413, a second metal mesh 1414 is fixed on the end of the wind tube 1404 away from the air outlet 1413, and a second industrial fan 1415 is fixed on the second metal mesh 1414 by bolts.

[0062] In this embodiment, the first industrial fan 1403 and the second industrial fan 1415 are both prior art, and the front and rear ends of the fuselage 1401 are welded with steel plates (such as the attached Figure 2 As shown in the figure, when the plate is continuously conveyed above the driving roller 1409 and the driven roller 1410, the air outlet 1403 is the maximum air flow channel, and the wind of the first industrial fan 1403 blows air to the bottom of the plate to cool it down, and the wind of the first industrial fan 1403 enters the wind tube 1404 through the air outlet 1403, and is blown out at the same time as the wind of the second industrial fan 1415. The third motor 1408 rotates the driving roller 1409, and the third synchronous wheel 1415 connected to the driving roller 1409 rotates. As the driving roller 1409 rotates, the second synchronous belt 1412 realizes the same-direction transmission to the third synchronous wheel 1411 through friction, and the remaining third synchronous wheels 1411 drive the driven roller 1410 to rotate to realize the transmission to the fireproof board thereon. By setting the wind tube 1404, the wind below the fireproof board is guided to the top of the fireproof board, so as to improve the utilization rate of the wind volume, blow air to cool down both sides of the fireproof board, and use the wind of the first industrial fan 1403 to increase the air supply volume above the board, so as to accelerate the cooling efficiency.

[0063] An infusion hose 1405 is placed at the bottom of the inner wall of the fuselage 1401 , and both ends of the infusion hose 1405 extend to the front end of the outer wall of the fuselage 1401 . The two ends of the infusion hose 1405 are connected in sequence through a circulation pump 1406 and a coolant tank 1407 .

[0064] In this embodiment, the circulating pump 1406 is a prior art. The circulating pump 1406 draws out the coolant in the coolant tank 1407 and circulates it in the infusion hose 1405. The coolant tank 1407 is provided with a liquid inlet hole for adding coolant (not shown in common technical drawings). Most of the infusion hose 1405 is coiled at the bottom of the inner wall of the fuselage 1401, and the air at the bottom of the inner wall of the fuselage 1401 (i.e., the air below the first industrial fan 1403) is cooled. During the rotation process, the first industrial fan 1403 forms a negative pressure to suck in the cold air below it and discharge it to the bottom of the fireproof board and the wind tube 1404, thereby further achieving cooling, improving cooling efficiency, and improving production efficiency. Example

[0065] A processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board comprises the following steps: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2. Crushing: Crushing the wood for secondary use, and then transferring it to the mixer; the main power of the crusher is 35kW, and the finished product particle size is 100 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 160rmp, and the stirring time is 30min; S4, hot pressing molding: the raw material mixture of the negative oxygen ion composite fireproof board is spread between the upper and lower molds, and the initial spreading thickness is 5mm. After the initial spreading, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the raw material mixture of the negative oxygen ion composite fireproof board. The raw material mixture of the negative oxygen ion composite fireproof board is spread on the glass fiber mesh cloth for the second time, and the second spreading thickness is 5mm. After the second spreading, hot pressing is performed to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 95MPa, the temperature is 100℃, and the hot pressing time is 20min; S5. Cooling: Both the upper and lower sides of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 3m / s, and the air supply volume is 200m³ / min; S6. Edge grinding: Grind and polish the four sides of the negative oxygen ion composite fireproof board; the feed speed is 5mm / min and the grinding depth is 2mm.

[0066] The raw materials of the negative oxygen ion composite fireproof board are composed of the following raw materials in parts by mass: 20 parts of wood flour, 15 parts of bamboo flour, 45 parts of magnesium oxide, 85 parts of magnesium chloride, 110 parts of light-burned powder, 1.5 parts of toughening agent, 0.2 parts of modifier, 0.75 parts of water repellent, and 10 parts of expanded perlite.

[0067] The recycled wood is washed with a high-pressure water gun and dried naturally; it is leveled after the initial tiling and the secondary tiling.

[0068] The air outlet of the industrial fan is respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing. The industrial fan blows air on both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 10 minutes.

[0069] The processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board in this embodiment uses the same processing equipment as that in Example 2, and the difference lies in the formula ratio and processing conditions. Example

[0070] A processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board comprises the following steps: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2. Crushing: Crushing the wood for secondary use, and then transferring it to the mixer; the main power of the crusher is 55kW, and the finished product particle size is 40 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 100rmp and the stirring time is 45min; S4, hot pressing molding: the raw material mixture of the negative oxygen ion composite fireproof board is spread between the upper and lower molds, and the initial spreading thickness is 17 mm. After the initial spreading, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the raw material mixture of the negative oxygen ion composite fireproof board. The raw material mixture of the negative oxygen ion composite fireproof board is spread on the glass fiber mesh cloth for the second time, and the second spreading thickness is 17 mm. After the second spreading is completed, hot pressing is performed to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 60 MPa, the temperature is 150°C, and the hot pressing time is 35 minutes; S5. Cooling: Both the upper and lower sides of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 10m / s, and the air supply volume is 145m³ / min; S6. Edge grinding: Grind and polish the four sides of the negative oxygen ion composite fireproof board; the feed speed is 20mm / min and the grinding depth is 0.1mm.

[0071] The raw materials of the negative oxygen ion composite fireproof board are composed of the following raw materials in parts by mass: 35 parts of wood powder, 6 parts of bamboo powder, 80 parts of magnesium oxide, 35 parts of magnesium chloride, 140 parts of light-burned powder, 0.8 parts of toughening agent, 1 part of modifier, 0.3 parts of water repellent, and 35 parts of expanded perlite.

[0072] The recycled wood is washed with a high-pressure water gun and dried naturally; it is leveled after the initial tiling and the secondary tiling.

[0073] The air outlet of the industrial fan is respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing. The industrial fan blows air on both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 25 minutes.

[0074] The processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board in this embodiment uses the same processing equipment as that in Example 2, and the difference lies in the formula ratio and processing conditions.

[0075] Experimental example The environmentally friendly and healthy negative oxygen ion composite fireproof board processed according to Example 1 to Example 4 was subjected to relevant test experiments. The results are as follows: Fig.14 As shown: The flame retardant grade is determined according to GB / T 8624-2012 "Classification of Combustion Performance of Building Materials", which is divided into three types: A, B and C; The smoke toxicity performance is measured in accordance with GB / T 20285-2006 "Hazard Classification of Smoke Toxicity of Materials", expressed as smoke production m2 / kg and carbon monoxide release mg / kg; The edge straightness is measured in accordance with GB / T 25970-2010 "Non-combustible inorganic composite panels" and is expressed as %; The fire resistance limit is measured in accordance with GB / T 25970-2010 "Non-combustible inorganic composite panels" and is expressed as h or more; The processing equipment for the environmentally friendly and healthy negative oxygen ion composite fireproof board in Example 1 and Example 2 is different, but the flame retardant grade, smoke toxicity performance, edge straightness and fire resistance limit in Example 2 are better than those in Example 1. Therefore, the processing line of the environmentally friendly and healthy negative oxygen ion composite fireproof board in the present invention can optimize the flame retardant grade, smoke toxicity performance, edge straightness and fire resistance limit of the environmentally friendly and healthy negative oxygen ion composite fireproof board.

[0076] The processing conditions and formulas of the environmentally friendly and healthy negative oxygen ion composite fireproof board in Example 3, Example 4 and Example 2 are different, but the flame retardant grade, smoke toxicity, edge straightness and fire resistance of the environmentally friendly and healthy negative oxygen ion composite fireproof board in Example 2 are better than those in Example 3 and Example 4. Therefore, the difference in process conditions will also affect the flame retardant grade, smoke toxicity, edge straightness and fire resistance of the environmentally friendly and healthy negative oxygen ion composite fireproof board.

[0077] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A processing technology for an environmentally friendly and healthy negative oxygen ion composite fireproof board, characterized in that: The following steps are involved: S1. Raw material recycling: The recycled wood is cleaned of non-wood debris, rinsed, and dried to form wood that can be reused; S2, crushing: crushing the secondary wood, and transferring it to the mixer after crushing; the main power of the crusher is 35-55kW, and the finished product particle size is 40-100 mesh; S3. Mixing raw materials of negative oxygen ion composite fireproof board: Pour wood powder, bamboo powder, magnesium oxide, magnesium chloride, light-burned powder, toughening agent, modifier, water repellent and expanded perlite into a mixer and stir evenly to form a negative oxygen ion fireproof board raw material mixture; the stirring speed is 100-160rmp, and the stirring time is 30-45min; S4, hot pressing molding: the negative oxygen ion composite fireproof board raw material mixture is flattened between the upper and lower molds, the initial flattening thickness is 5-17mm, after the initial flattening, the glass fiber mesh cloth of corresponding specifications is cut and placed on the surface of the negative oxygen ion composite fireproof board raw material mixture, the negative oxygen ion composite fireproof board raw material mixture is flattened on the glass fiber mesh cloth for the second time, the second flattening thickness is 5-17mm, and hot pressing molding is performed after the second flattening to form a negative oxygen ion composite fireproof board; the hot pressing pressure is 60-95MPa, the temperature is 100℃-150℃, and the hot pressing time is 20-35min; S5. Cooling: The upper and lower surfaces of the negative oxygen ion composite fireproof board are cooled by industrial fans; the wind speed is 3-10m / s, and the air supply volume is 145-200m³ / min; S6, edge grinding: grinding and polishing the four sides of the negative oxygen ion composite fireproof board; the feed speed is 5-20mm / min, and the grinding depth is 0.1-2mm.

2. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 1 is characterized in that: The raw material mixture of the negative oxygen ion composite fireproof board is composed of the following raw materials in parts by mass: 20-35 parts of wood powder, 6-15 parts of bamboo powder, 45-80 parts of magnesium oxide, 35-85 parts of magnesium chloride, 110-140 parts of light-burned powder, 0.8-1.5 parts of toughening agent, 0.2-1 parts of modifier, 0.3-0.75 parts of water repellent and 10-35 parts of expanded perlite.

3. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 1 is characterized in that: The recycled wood is washed by a high-pressure water gun and dried naturally; and both the initial tiling and the secondary tiling are leveled.

4. The processing technology of an environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 1 is characterized in that: The air outlet ends of the industrial fan are respectively aimed at the upper and lower surfaces of the negative oxygen ion composite fireproof board after hot pressing, and the industrial fan blows air to both sides of the negative oxygen ion composite fireproof board at the same time, and the blowing time of a single board is 10-25 minutes.

5. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 2 is characterized in that: The equipment used in steps S2 to S6 is a fireproof board processing line, which includes a first conveyor belt (1), a crusher (2), a first auger (3), a material collecting tank (5), a scaffold (6), a mixer (7), a second auger (8), a workshop layer (9), a hot pressing molding machine (10), a push-flattening mechanism (11), a material conveying mechanism (12), a second conveyor belt (13), a cooling mechanism (14) and an edge grinder (15). The top end of the first conveyor belt (1) is fixed at a position above the crusher (2), and the input end flange of the first auger (3) is connected to the crusher. The output end of the machine (2), the output end of the first auger (3) and the top feed port of the collecting tank (5) are fixed with a bellows (4), the mixer (7) is mounted on the scaffold (6), the output end of the mixer (7) is flange-connected to the input end of the second auger (8), the output end of the second auger (8) extends to a position above the workshop layer (9), the two ends of the second conveyor belt (13) are respectively arranged between the hot pressing molding machine (10) and the cooling mechanism (14), the number of the material conveying mechanisms (12) is two, and the two material conveying mechanisms (12) are respectively arranged at positions above and below the workshop layer (9).

6. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 2 is characterized in that: The push-flattening mechanism (11) is arranged on the hot pressing forming machine (10), and comprises a first bottom plate (1101), four first universal wheels (1102) are installed at the bottom of the first bottom plate (1101) by bolts, a connecting plate (1103) is welded at the front of the top of the first bottom plate (1101), two side plates (1104) are welded at the upper rear end of the connecting plate (1103), the two side plates (1104) are distributed on the left and right, and the side plates (1104) facing each other and the top are respectively provided with a first slide groove (1105) and a first slide groove (1106). A second slide groove (1106), a sliding frame (1107) is provided inside the first slide groove (1105) and the second slide groove (1106), an electric telescopic rod (1108) is fixed to the top of the sliding frame (1107) by bolts, a scraper (1109) is fixed to the bottom of the electric telescopic rod (1108) by bolts, the scraper (1109) is made of stainless steel, a linear motor (1110) is installed on the right end of the right side plate (1104) by bolts, and the output end of the linear motor (1110) is fixedly connected to the right side of the sliding frame (1107).

7. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 4 is characterized in that: A placement plate (1111) is welded to the middle of the rear end of the connection plate (1103), a material collection box (1112) is placed on the placement plate (1111), a placement groove (1113) is provided at the rear of the top of the first bottom plate (1101), a material collection box (1114) is clamped in the placement groove (1113), and the hot pressing molding machine (10) is located between the material collection box (1112) and the material collection box (1114).

8. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 3 is characterized in that: The material transmission mechanism (12) comprises a second bottom plate (1217), a first slide rail (1201) and a second slide rail (1208) are fixed to one of the diagonal groups on the top of the second bottom plate (1217), a third slide rail (1215) is fixed to the other diagonal group on the top of the second bottom plate (1217), a first motor (1202) is fixed to the top of the first slide rail (1201), a first lead screw (1203) is keyed to the output end of the first motor (1202), a first synchronous wheel (1204) is keyed to the lower position of the first lead screw (1203), a second lead screw (1207) is rotatably connected to the inside of the second slide rail (1208), a second synchronous wheel (1206) is keyed to the lower position of the second lead screw (1207), and a first synchronous belt (1205) is sleeved on the first synchronous wheel (1204) and the second synchronous wheel (1206). The first lead screw (1203) and the second lead screw (1207) are threadedly connected to a sliding frame (1209); a second motor (1210) is fixed to an outer wall of the sliding frame (1209) near the first slide rail (1201); a conveying roller (1211) is fixed to an output end of the second motor (1210); a plurality of conveying rollers (1211) are provided; one end of the plurality of conveying rollers (1211) away from the second motor (1210) is key-connected to a sprocket (1212); a chain (1213) is sleeved on the plurality of sprockets (1212); four second universal wheels (1216) are bolted to the bottom of the second bottom plate (1217); a sliding rod (1214) is fixed to each of the two third slide rails (1215); the sliding rod (1214) is passed through the sliding frame (1209) at a position diagonally opposite to the top of the third slide rail (1215).

9. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 2 is characterized in that: The cooling mechanism (14) comprises a body (1401), a third motor (1408) is fixed at an upper position of an outer wall of the body (1401), a driving roller (1409) is fixed at an output end of the third motor (1408), one end of the driving roller (1409) away from the third motor (1408) is key-connected to a third synchronous wheel (1411), there are a plurality of third synchronous wheels (1411), the remaining third synchronous wheels (1411) are key-connected to driven rollers (1410), the driven rollers (1410) are rotationally connected to the body (1401), and a second synchronous wheel (1411) is sleeved on the third synchronous wheel (1411). A belt (1412) is provided, a first metal mesh (1402) is fixed at a middle position of the inner wall of the body (1401), a first industrial fan (1403) is installed on the first metal mesh (1402) by means of bolts, an air outlet (1413) is provided at a position above the first metal mesh (1402) at the rear end of the body (1401), a wind tube (1404) is fixed in the air outlet (1413), a second metal mesh (1414) is fixed at one end of the wind tube (1404) away from the air outlet (1413), and a second industrial fan (1415) is fixed on the second metal mesh (1414) by means of bolts.

10. The processing technology of the environmentally friendly and healthy negative oxygen ion composite fireproof board according to claim 1 is characterized in that: An infusion hose (1405) is placed at the bottom of the inner wall of the fuselage (1401), and both ends of the infusion hose (1405) extend to the front end of the outer wall of the fuselage (1401). The two ends of the infusion hose (1405) are connected in sequence through a circulation pump (1406) and a coolant tank (1407).

Images