Fireproof energy-saving gypsum board and preparation process thereof

Abstract

The invention belongs to the technical field of forming equipment, and particularly relates to a fireproof energy-saving gypsum board and a preparation process thereof. Side plates are arranged on the two sides of the conveying belt, and the conveying belt rotates between the two side plates and is driven by a first motor. The side plate is mounted on the working frame; a forming and extruding mechanism is mounted on the side plate and is used for extruding and manufacturing a gypsum board strip green body with a compact structure; the forming extrusion mechanism is provided with a feeding mechanism, and the feeding mechanism is used for feeding slurry; a paper roller is arranged on the left side of the extrusion mechanism, located between the extrusion mechanism and the feeding mechanism and used for conveying surface paper. According to the gypsum board production line, the feeding mechanism is arranged, so that the situation that large particles exist in pulp to scratch the surface paper or the bottom paper can be avoided, meanwhile, the situation that the large particles form protrusions on the surface of a board body is avoided, and the qualified rate of gypsum board finished products is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of forming equipment, and particularly relates to a fireproof energy-saving gypsum board and a preparation process thereof. BACKGROUND

[0002] As a light-weight, high-strength, energy-saving and environment-friendly building decoration and renovation material, the gypsum board is widely used in building partition walls, suspended ceilings, ground leveling and various types of decorative panels, and its preparation process mainly focuses on core processes such as raw material processing, slurry preparation, forming, curing and post-processing. Specifically, first, the building gypsum raw material is pretreated, and then mixed and stirred with water, retarder, reinforcing agent and other additives according to the set ratio to prepare a gypsum slurry with uniform solid-liquid suspension and moderate fluidity. Then, the slurry is poured onto the bottom cover paper treated by glue coating, and the face cover paper covering and composite extrusion molding are completed by the gypsum board forming machine to form a wet gypsum board strip.

[0003] The gypsum board forming machine is the core forming equipment in the gypsum board preparation process, and its core working component is the forming extrusion mechanism. The working principle of the mechanism is that after the slurry is poured onto the bottom cover paper and the face cover paper is covered, the composite layer is subjected to uniform and stable extrusion force by the extrusion components such as forming rollers and forming plates. On the one hand, the face cover paper, gypsum slurry and bottom cover paper are tightly combined to ensure the bonding strength of the paper and slurry and avoid delamination defects in the later stage. On the other hand, the spacing of the extrusion components is precisely adjusted to strictly control the forming thickness of the gypsum board, so that the uniformity of the plate thickness is ensured. At the same time, the excess liquid phase and part of the residual air in the slurry can be extruded during the extrusion process, which improves the compactness of the gypsum core layer and assists in completing the plate edge sealing and setting, so that the specifications of the formed wet gypsum board strip are uniform, the edges are neat, and the structure is compact, laying a foundation for the subsequent initial curing and drying processes.

[0004] In the actual industrial production process, if the screening process is not strictly controlled and the building gypsum powder is not fully screened during the pretreatment stage of the gypsum raw material, large-diameter particles and unbroken lumps may be left in the gypsum powder. When such undesirable particles are mixed into the slurry, they will directly contact and rub against the face paper and the bottom face paper during the pressing operation of the forming and extruding mechanism, which is easy to scratch or even pierce the face paper and cause core slurry leakage defects. At the same time, such large particles and lumps have a large volume and are difficult to be completely wrapped by the gypsum slurry during the pressing process, which is easy to form protrusions on the surface of the board and damage the flatness of the board surface, and also causes uneven transmission of extrusion pressure, resulting in insufficient local strength and internal micro-cracks of the board. When the slurry is poured onto the bottom face paper, in order to ensure that the slurry uniformly covers the entire area of the bottom paper and has a consistent thickness, low-frequency and small-amplitude vibration of the slurry on the bottom paper is required through a vibration platform to promote the slurry to overcome its yield value and achieve uniform spreading, and to discharge the small bubbles remaining in the slurry. However, when large particles and lumps are left in the slurry, such particles will block the flow of the slurry, destroy the overall fluidity of the slurry, and cause the slurry to fail to achieve uniform spreading, resulting in local slurry accumulation and local slurry loss, and making the thickness deviation of the wet gypsum board at different positions exceed the specified standard. SUMMARY

[0005] In order to make up for the shortcomings of the prior art and solve the above technical problems, the present application provides a fireproof energy-saving gypsum board and a preparation process thereof. By providing a feeding mechanism, it can avoid scratching the face paper or the bottom paper by large particles in the slurry, and also avoid the formation of protrusions on the surface of the board by large particles, thereby improving the qualification rate of the finished gypsum board. The specific structure is as follows: A fireproof energy-saving gypsum board preparation process, which comprises the following steps: Step 1: Put the pretreated raw material into the stirring equipment and stir at high speed to make a qualified gypsum slurry with moderate fluidity and uniform solid-liquid suspension, and then convey it to the forming process; Step 2: Through the gypsum board forming machine, convey the bottom paper and the face paper to the forming area, pour the gypsum slurry, and then composite and press through the forming and extruding mechanism to continuously form a wet gypsum board strip meeting the specifications; Step 3: The gypsum board forming machine conveys the wet board strip to the initial setting area to complete the initial setting, and after reaching the specified strength, cuts and edges the board to size through the cutting machine group, and recycles the waste material; Step 4: Convey the cut gypsum board into the drying kiln, control the temperature and time in stages, remove the free water, and then remove the unqualified products after drying the gypsum board, and pack and label the qualified products according to the specifications before storing them in the warehouse.

[0006] As a preferred mode of the present application, the gypsum board forming machine in step two comprises a conveying belt, side plates arranged on both sides of the conveying belt, and the conveying belt rotates between the two side plates and is driven by a first motor; the side plates are installed on a workbench; A forming and extruding mechanism is installed on the side plate, and the forming and extruding mechanism is used for extruding the gypsum board strip blank with compact structure; The forming and extruding mechanism is provided with a feeding mechanism, and the feeding mechanism is used for feeding the slurry; A paper roller is arranged on the left side of the extruding mechanism, and the paper roller is located between the extruding mechanism and the feeding mechanism and is used for conveying the face paper; the conveying belt is provided with a base paper, and the base paper passes below the feeding mechanism.

[0007] The feeding mechanism comprises a feeding bin; a guide bin is installed at the bottom of the feeding bin, and the guide bin is located at the top of the side plate; mounting plates are fixed on both sides of the guide bin, and the other sides of the mounting plates are fixed on the side plate; The bottom of the feeding bin is V-shaped; a mesh cylinder is fixed at the bottom of the feeding bin, and the mesh cylinder is C-shaped, and the opening of the mesh cylinder faces upward; A rotating rod is rotatably arranged in the mesh cylinder; the rotating rod is divided into two parts by a middle part as a boundary line, and auger pieces are fixed on both sides of the boundary line, and the two auger pieces are oppositely arranged and mirror-symmetrically arranged; A circular cover is arranged on the opposite side of the two auger pieces and located on the guide bin, and the circular cover is installed on the guide bin by bolts; the rotating rod rotates on the circular cover and is driven by a second motor; The auger pieces are provided with uniformly arranged extruding holes; a cutting rod is arranged in each extruding hole; two oppositely rotating extruding rollers are arranged above the auger pieces, and the extruding rollers rotate in the guide bin and are driven by a third motor, and the V-shaped surface at the bottom of the feeding bin is opposite to the extruding rollers; A slope is arranged below the mesh cylinder; a connecting plate is fixed on the left side of the slope, and slurry pumps are uniformly arranged on the connecting plate; A trapezoidal plate is arranged below the slope, and the left part of the trapezoidal plate is a plane, and the right part is an inclined surface; a discharge port is arranged on the right side of the trapezoidal plate, and the discharge port is parallel to the passing base paper.

[0008] As a preferred mode of the present application, a rotating belt is rotatably arranged in the slope, and the bottom of the rotating belt is flush with the bottom of the slope; Uniformly arranged scraper plates are fixed on the outer ring surface of the rotating belt, and the scraper plates are provided with needles; The slope is provided with an annular cavity, and the scraper plates rotate in the annular cavity; a suction pipe is arranged in the annular cavity, and the suction pipe extends to the outside and communicates with a small air suction pump.

[0009] In a preferred embodiment of the present invention, uniformly arranged uprights are fixed on the inclined surface of the trapezoidal plate, and adjacent uprights are staggered.

[0010] In a preferred embodiment of the present invention, a vibration motor is installed at the bottom of the trapezoidal plate, and the other side of the vibration motor is installed at the bottom of the guide hopper; the trapezoidal plate slides within the guide hopper; The inclined platform is equipped with a cover on its left side, and the cover is fixed to the feed hopper by bolts.

[0011] In a preferred embodiment of the present invention, a rectangular bin is provided on the right side of the feed bin, and the discharge port is located inside the rectangular bin; The rectangular bin is equipped with a sliding sealing plate, and the sealing plate is sealed and fitted to the inner ring of the rectangular bin by a sealing strip; the rectangular bin is equipped with a vertical plate on the side away from the feed hopper; A guide rod is fixed to the sealing plate and passes through the vertical plate; a spring is provided between the sealing plate and the vertical plate, and the guide rod passes through the spring; in the initial state, the sealing plate is in contact with the material guide hopper; The sealing plate is located below the bottom of the rectangular hopper, where a discharge port is provided.

[0012] In a preferred embodiment of the present invention, baffles are fixed on opposite sides of both side plates, and the bottom paper passes under the baffles. The rectangular compartment is provided with a limiting roller below it; the limiting roller rotates between two baffles and is driven by a fourth motor; the top of the limiting roller is provided with an arc-shaped block, and the bottom of the arc-shaped block is in contact with the limiting roller, while the top is fixed to the rectangular compartment. The limiting roller is made of elastic rubber material, and the bottom paper passes through the bottom of the limiting roller and is attached to the limiting roller.

[0013] In a preferred embodiment of the present invention, a rotating shaft is provided on the right side of the limiting roller; the rotating shaft is divided by a middle line, and rubber spiral strips are provided on both sides of the dividing line, with the spiral directions of the two spiral strips being opposite and mirror images of each other.

[0014] In a preferred embodiment of the present invention, a horizontal plate is fixed at the bottom of the feed hopper, and the bottom of the horizontal plate is lower than the feed inlet. The horizontal plate is attached to the two baffles on both sides facing the baffles; the other side of the horizontal plate is an arc-shaped surface and is attached to the paper that has passed through the paper roller.

[0015] The present invention also provides a fire-resistant and energy-saving gypsum board, comprising a gypsum board; the gypsum board is prepared using a fire-resistant and energy-saving gypsum board preparation process.

[0016] The beneficial effects of this invention are as follows: 1. The fireproof and energy-saving gypsum board and its preparation process described in this invention utilizes an extrusion roller to initially crush gypsum lumps before flowing into a mesh cylinder. Undesirable particles larger than the mesh cylinder aperture are intercepted. Subsequently, driven by a reverse-mirror-set auger, the intercepted large gypsum particles move to both sides of the mesh cylinder and abut against the circular cap. Under the continuous push of the auger, they are forced to pass through the extrusion hole with a cutting rod. The large gypsum particles are repeatedly divided and refined into particles that meet the standard particle size by the cutting rod, allowing them to pass smoothly through the mesh cylinder aperture into subsequent processes. Impurities that cannot be divided are continuously intercepted on both sides of the mesh cylinder. Ultimately, the slurry flowing through the mesh cylinder contains no large-diameter gypsum particles, lumps, or impurities. This avoids large particles in the slurry scratching the face paper or backing paper, and also prevents large particles from forming protrusions on the board surface, thus improving the qualification rate of the finished gypsum board.

[0017] 2. The fireproof and energy-saving gypsum board and its preparation process described in this invention achieves uniform coverage and spreading of the slurry on the bottom protective paper by ensuring that the slurry surface in the trapezoidal board plane rises naturally and evenly, and that the discharge port is parallel to the bottom protective paper on the conveyor belt. This allows the evenly leveled slurry to flow out synchronously and evenly from the discharge port and land on the uniformly moving bottom protective paper surface, directly achieving uniform coverage and spreading of the slurry across the entire bottom protective paper without the need for vibration of a vibrating platform to overcome the slurry yield value or promote slurry flow. This design shortens the overall length of the gypsum board forming machine and even the entire gypsum board preparation production line, optimizes the layout of the production workshop, and reduces the floor space occupied by the production line. At the same time, because the slurry has been refined and impurity removed, there are no particles obstructing the flow. Combined with the structural design of the trapezoidal board and the discharge port, there will be no local accumulation or material shortage during the slurry spreading process, resulting in a uniform thickness of the wet gypsum board strip with thickness deviation strictly controlled within the specified standard. This significantly improves the dimensional accuracy of the gypsum board, and the spread slurry does not require subsequent process correction of deviations, further ensuring the continuity of production and the stability of product quality.

[0018] 3. The fireproof and energy-saving gypsum board and its preparation process described in this invention utilize a rotating shaft to drive two spiral strips with opposite spiral directions to rotate synchronously. The spiral strips push the base paper towards the side plates, completely flattening the base paper and preventing it from folding or bulging upwards due to not being in contact with the conveyor belt. Subsequently, the flattened base paper passes through a limiting roller made of elastic rubber. The rotating limiting roller continuously squeezes and limits the base paper, preventing it from folding or bulging again and avoiding vertical jumping during transport. This ensures that the slurry falls on a flat and stable base paper, preventing the slurry from being unable to enter the folds due to wrinkles or uneven flow due to bulging or jumping of the base paper. This fundamentally ensures the uniformity of slurry spreading and provides a flat base for subsequent molding and extrusion. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is an overall structural diagram of the gypsum board forming machine of the present invention; Figure 2 This is an overall structural diagram of the gypsum board forming machine of the present invention from another perspective; Figure 3 This is a diagram showing the separation structure of the gypsum board forming machine of the present invention; Figure 4 This is an internal structural diagram of the feeding mechanism in this invention; Figure 5 This is the present invention. Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 This is the present invention. Figure 4 Enlarged view of a section at point B in the middle; Figure 7 This is a top view of the gypsum board forming machine of the present invention; Figure 8 This is the present invention. Figure 7 Sectional view at CC; Figure 9 This is the present invention. Figure 8 Enlarged view of a section at point D; Figure 10 This is the present invention. Figure 8 Enlarged view of a section at point E in the middle; Figure 11 This is the present invention. Figure 8 Enlarged view of a section at point F in the middle; Figure 12 This is the present invention. Figure 8 Enlarged view of a section at point G in the middle.

[0021] In the diagram: 1. Conveyor belt; 11. Side plate; 12. Forming and extrusion mechanism; 13. Paper roller; 14. Face paper; 15. Bottom paper; 2. Feeding bin; 21. Guide bin; 22. Mounting plate; 23. Cover; 3. Mesh cylinder; 31. Screwdriver plate; 32. Circular cover; 33. Extrusion hole; 34. Cut-off rod; 35. Extrusion roller; 4. Inclined platform; 41. Connecting plate; 42. Slurry pump; 43. Trapezoidal plate; 44. Discharge port; 45. Transfer belt; 46. Scraper; 47. Pulling pipe; 48. Upright pole; 49. Vibration motor; 5. Rectangular bin; 51. Sealing plate; 52. Upright plate; 53. Guide rod; 54. Discharge port; 6. Baffle; 61. Limiting roller; 62. Arc block; 63. Rotating shaft; 64. Spiral strip; 65. Horizontal plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 12As shown, as one embodiment of the present invention, the present invention discloses a process for preparing fire-resistant and energy-saving gypsum board, which includes the following steps: Step 1: Put the pretreated raw materials into the mixing equipment and mix them at high speed until they are uniformly mixed to make a qualified gypsum slurry with moderate fluidity and uniform solid-liquid suspension, and then transport it to the molding process. Step 2: The base paper 15 and the face paper 14 are conveyed to the forming area through the gypsum board forming machine, gypsum slurry is poured in, and then the gypsum board is continuously formed into a wet gypsum board strip that meets the specifications by the forming extrusion mechanism 12. Step 3: The gypsum board forming machine conveys the wet board strip to the initial setting zone to complete the initial setting. After reaching the specified strength, it is cut to length and trimmed by the cutting unit, and the waste material is recycled and reused. Step 4: Send the cut gypsum board into the drying kiln, control the temperature and time in stages to remove free water and make the moisture content meet the standard. Then, remove unqualified products from the dried gypsum board and pack and label qualified products according to specifications before storing them in the warehouse. The gypsum board forming machine mentioned in step two includes a conveyor belt 1; side plates 11 are provided on both sides of the conveyor belt 1, and the conveyor belt 1 rotates between the two side plates 11 and is driven by a first motor; the side plates 11 are installed on the work frame. A forming and extrusion mechanism 12 is installed on the side plate 11, and the forming and extrusion mechanism 12 is used to extrude and produce a gypsum board strip blank with a compact structure. The forming and extrusion mechanism 12 is equipped with a feeding mechanism, which is used to feed the slurry. The extrusion mechanism has a paper roller 13 on its left side, which is located between the extrusion mechanism and the feeding mechanism and is used to convey the face paper 14; the conveyor belt 1 conveys the bottom paper 15, which passes under the feeding mechanism. In this embodiment, the feeding mechanism includes a feeding bin 2; The bottom of the feeding hopper 2 is equipped with a guide hopper 21, and the guide hopper 21 is located on the top of the side plate 11; both sides of the guide hopper 21 are fixed with mounting plates 22, and the other side of the mounting plate 22 is fixed to the side plate 11. The bottom of the feeding hopper 2 is V-shaped; a mesh cylinder 3 is fixed to the bottom of the feeding hopper 2, and the mesh cylinder 3 is C-shaped with its opening facing upward; The mesh cylinder 3 has a rotating rod inside; the rotating rod is divided by the middle, and auger plates 31 are fixed on both sides of the dividing line, and the two auger plates 31 have opposite spiral directions and are mirror images of each other; Two auger blades 31 are mounted on opposite sides of the guide bin 21 with circular covers 32, and the circular covers 32 are bolted to the guide bin 21; the rotating rod rotates on the circular covers 32 and is driven by a second motor. The auger plate 31 has uniformly arranged extrusion holes 33; each extrusion hole 33 is provided with a cutting rod 34; two relatively rotating extrusion rollers 35 are provided above the auger plate 31, and the extrusion rollers 35 rotate in the guide bin 21 and are driven by a third motor, and are opposite to the V-shaped surface at the bottom of the feeding bin 2. A ramp 4 is provided below the mesh cylinder 3; a connecting plate 41 is fixed on the left side of the ramp 4, and a uniformly arranged slurry pump 42 is installed on the connecting plate 41. Below the inclined platform 4 is a trapezoidal plate 43, with the left side of the trapezoidal plate 43 being a flat surface and the right side being an inclined surface; the right side of the trapezoidal plate 43 is provided with a discharge port 44, and the discharge port 44 is parallel to the bottom paper 15 that passes through it.

[0024] In practice, when making gypsum board, the face paper 14 and the back paper 15 are first released from the release roller, and the face paper 14 is wrapped around the paper roller 13 and passes under the forming extrusion mechanism 12. At the same time, the back paper 15 also moves with the conveyor belt 1, and the back paper 15 first passes under the bottom of the feeding mechanism and then passes under the extrusion mechanism. Meanwhile, the prepared slurry is fed onto the passing back paper 15 through the feeding mechanism. Then the slurry follows the back paper 15 and the face paper 14 into the forming extrusion mechanism 12. The forming extrusion mechanism 12 is used to extrude the gypsum board into a wet gypsum board strip, which is then cut and dried to obtain the gypsum board. Specifically, when using the feeding mechanism, the slurry is first introduced into the feeding bin 2, and the extrusion rollers 35 are driven to rotate to opposite sides by the third motor. After the slurry enters the feeding bin 2, it passes between the two extrusion rollers 35. The relatively rotating extrusion rollers 35 will squeeze the passing slurry. If there are large particles or lumps of gypsum in the slurry, the extrusion rollers 35 can crush them when they pass through the extrusion rollers 35. Then, it will flow into the mesh cylinder 3 through the opening. The slurry entering the mesh cylinder 3 will flow downward from the holes on the mesh cylinder 3. If there are still large particles or lumps of gypsum in the slurry... When there are impurities or gypsum particles in the holes of the mesh cylinder 3, the large gypsum particles or impurities cannot pass through the mesh cylinder 3 and will remain inside the mesh cylinder 3. At the same time, the second motor controls the rotating rod to rotate, which will drive the two auger plates 31 to rotate. The auger plates 31 rotate in opposite directions. During the rotation of the auger plates 31, the large gypsum particles or particles remaining in the mesh cylinder 3 will be pushed to the position of the circular covers 32 on both sides, thereby pushing the large gypsum particles or impurities to one side of the circular covers 32 on both sides. The large gypsum particles or impurities can be removed later by removing the circular covers 32. More specifically, during the rotation of the auger blade 31, not only can residual impurities be pushed to one side of the circular cover 32, but the slurry located inside the mesh cylinder 3 that has not flowed downwards through the mesh cylinder 3 can also be pushed towards the circular cover 32. When the pushed slurry comes into contact with the circular cover 32, it is obstructed by the circular cover 32 and cannot continue to move. Therefore, during the process of the auger blade 31 pushing the slurry forward again, the slurry will pass through the evenly arranged extrusion holes 33 on the auger blade 31. After the slurry passes through, it can be further refined, making the slurry... The materials mix with each other, and because there is a cutting rod 34 in the extrusion hole 33, when the slurry passes through the extrusion hole 33, the cutting rod 34 will divide the slurry. If the large gypsum particles larger than the mesh cylinder 3 pass through the extrusion hole 33, they will be divided into smaller particles. Since there are multiple extrusion holes 33, the large gypsum particles can be cut multiple times, so that the large gypsum particles are divided into standard ranges and can pass through the holes on the mesh cylinder 3. If impurities pass through the extrusion hole 33, they cannot be divided by the cutting rod 34 and the impurities cannot pass through the extrusion hole 33. Furthermore, after the slurry flows down from the wire cylinder 3, it will flow down along the inclined platform 4. When it reaches the bottom of the inclined platform 4, the slurry pump 42 will pump the slurry to the plane on the left side of the trapezoidal plate 43. As the amount of slurry gradually increases, the liquid level of the slurry will also gradually rise. At the same time, it will gradually move along the trapezoidal plate 43 to the outlet 44. Since the liquid level of the slurry is in a flat state, the slurry will flow out from the outlet 44 at the same time and fall on different positions on the surface of the base paper 15, so that the slurry is evenly spread on the base paper 15 it passes through, and then composite extrusion is performed. Specifically, the gypsum clumps are initially crushed by the extrusion roller 35 and then flow into the screen cylinder 3. Undesirable particles larger than the aperture of the screen cylinder 3 are intercepted. Subsequently, under the push of the auger plate 31 set in a reverse mirror image, the intercepted large gypsum particles move to both sides of the screen cylinder 3 and abut against the circular cover 32. Under the continuous push of the auger plate 31, they are forced to pass through the extrusion hole 33 with the cutting rod 34. The large gypsum particles are repeatedly divided and refined into particles that meet the standard particle size by the cutting rod 34, and can pass smoothly through the aperture of the screen cylinder 3 to enter the subsequent process. Impurities that cannot be divided are continuously intercepted on both sides of the screen cylinder 3. Finally, there are no large gypsum particles, clumps and impurities in the slurry flowing through the screen cylinder 3. This avoids large particles in the slurry from scratching the face paper 14 or the back paper 15, and also avoids large particles from forming protrusions on the board surface, thus improving the qualification rate of the finished gypsum board. Meanwhile, by ensuring the slurry surface within the trapezoidal plate 43 rises naturally and evenly, and by maintaining the outlet 44 parallel to the bottom protective paper 14 on the conveyor belt 1, the evenly aligned slurry can flow synchronously and evenly from the outlet 44 and land on the uniformly moving bottom paper 15. This directly achieves uniform coverage and spreading of the slurry across the entire bottom protective paper 14, eliminating the need for the vibration of a vibrating platform to overcome the slurry yield value and propel the slurry flow. This design shortens the overall length of the gypsum board molding machine and even the entire gypsum board production line. The layout of the production workshop has been optimized, reducing the floor space occupied by the production line. At the same time, since the slurry has been refined and impurities removed, there are no particles obstructing its flow. Combined with the structural design of the trapezoidal plate 43 and the discharge port 44, there will be no local accumulation or shortage of slurry during the spreading process. This results in a uniform thickness of the wet gypsum board strip, with thickness deviation strictly controlled within the specified standard. This significantly improves the dimensional accuracy of the gypsum board. Furthermore, the spread slurry does not require subsequent process correction of deviations, further ensuring the continuity of production and the stability of product quality.

[0025] As one embodiment of the present invention; a rotating belt 45 is rotatably mounted inside the inclined platform 4, and the bottom of the rotating belt 45 is flush with the bottom of the inclined platform 4; The outer ring surface of the conveyor belt 45 is fixed with uniformly arranged scrapers 46, and the scrapers 46 are provided with needles. The inclined platform 4 has an annular cavity, and the scraper 46 rotates in the annular cavity; the annular cavity has a suction pipe 47, which extends to the outside and is connected to a small air pump. In this embodiment, uniformly arranged uprights 48 are fixed on the inclined surface of the trapezoidal plate 43, and adjacent uprights 48 are staggered. In this embodiment, a vibration motor 49 is installed at the bottom of the trapezoidal plate 43, and the other side of the vibration motor 49 is installed at the bottom of the guide hopper 21; the trapezoidal plate 43 slides inside the guide hopper 21; The inclined platform 4 is provided with a cover 23 on the left side, and the cover 23 is fixed to the feed hopper 21 by bolts.

[0026] During implementation, since a vibration motor 49 is provided at the bottom of the trapezoidal plate 43, when the slurry passes over the inclined surface of the trapezoidal plate 43, the vibration motor 49 is controlled to drive the trapezoidal plate 43 to vibrate, thereby vibrating the slurry. After the slurry is vibrated, the air bubbles in the slurry can be vibrated to the surface of the slurry. At the same time, since there are staggered uprights 48 fixed on the inclined surface of the trapezoidal plate 43, when the slurry passes over the uprights 48 on the trapezoidal plate 43, the uprights 48 can agitate and divert the slurry, thereby further discharging the gas inside the slurry and causing it to float to the surface of the slurry. Simultaneously, the rotating conveyor belt 45 is controlled to rotate, which in turn drives multiple scrapers 46 to rotate clockwise. The rotating scrapers 46 push the air bubbles on the surface of the slurry and push them into the annular cavity. At the same time, since the scrapers 46 are equipped with needles, when the needles come into contact with the air bubbles, they can puncture the air bubbles. Subsequently, the gas will follow the scrapers 46 into the annular cavity, and then be extracted through the extraction tube 47, thereby removing the gas inside the slurry. It is normal for some slurry to be extracted when the gas is extracted. Once the gypsum board is finished, the remaining slurry in the diversion chamber can be discharged by removing the cover 23, and the diversion chamber 21 can be cleaned at the same time.

[0027] As one embodiment of the present invention; a rectangular bin 5 is provided on the right side of the feed hopper 21, and the discharge port 44 is located inside the rectangular bin 5; The rectangular bin 5 is provided with a sliding sealing plate 51, and the sealing plate 51 is sealed and fitted to the inner ring of the rectangular bin 5 by a sealing strip; the rectangular bin 5 is provided with a vertical plate 52 on the side away from the feed guide bin 21. A guide rod 53 is fixed on the sealing plate 51 and passes through the vertical plate 52; a spring is provided between the sealing plate 51 and the vertical plate 52 and the guide rod 53 passes through the spring; in the initial state, the sealing plate 51 is in contact with the feed hopper 21. Below the sealing plate 51, at the bottom of the rectangular bin 5, there is a discharge port 54; In this embodiment, baffles 6 are fixed on opposite sides of the two side plates 11, and the bottom paper 15 passes under the baffles 6. The rectangular compartment 5 is provided with a limiting roller 61 below it; the limiting roller 61 rotates between two baffles 6 and is driven by a fourth motor; the top of the limiting roller 61 is provided with an arc-shaped block 62, and the bottom of the arc-shaped block 62 is fitted with the limiting roller 61, and the top is fixed on the rectangular compartment 5. The limiting roller 61 is made of elastic rubber material, and the bottom paper 15 passes through the bottom of the limiting roller 61 and is attached to the limiting roller 61; In this embodiment, a rotating shaft 63 is provided on the right side of the limiting roller 61; The rotating shaft 63 is divided by a central line, and rubber spiral strips 64 are provided on both sides of the dividing line. The spiral directions of the two spiral strips 64 are opposite and they are mirror images of each other. In this embodiment, a horizontal plate 65 is fixed at the bottom of the feed hopper 21, and the bottom of the horizontal plate 65 is lower than the feed inlet 54; The horizontal plate 65 is attached to the two baffles 6 on both sides facing the baffles 6 respectively; the other side of the horizontal plate 65 is an arc-shaped surface and is attached to the paper 14 that has passed through the paper roller 13.

[0028] During implementation, since the sealing plate 51 is initially in contact with the guide hopper 21, when the slurry flows out from the outlet 44, it will come into contact with the sealing plate 51, which will then push the sealing plate 51 towards the side of the vertical plate 52. Subsequently, the slurry will flow downward between the sealing plate 51 and the guide plate. As the amount of slurry flowing out of the outlet 44 gradually increases, the distance that the sealing plate 51 is pushed gradually increases, thus gradually moving away from the guide hopper 21. The slurry between the sealing plate 51 and the guide hopper 21 is in a compacted state and there is no... The cavity or gap, and the slurry is in a squeezed state. Since the size of the feed port 54 is constant, the squeezed slurry will gradually flow out from the feed port 54 and flow onto the bottom paper 15. As the slurry gradually enters the space between the sealing plate 51 and the guide hopper 21 from the discharge port 44, the slurry can be kept in a squeezed state. When the bottom paper 15 passes through the bottom of the feed port 54, the slurry without a cavity or gap will flow out from the entire feed port 54 and spread relatively evenly on the bottom paper 15. Specifically, since the bottom of the rectangular bin 5 is equipped with a rotating shaft 63 with spiral strips 64, when the bottom paper 15 passes under the rectangular bin 5, the rotating shaft 63 is controlled to rotate, which will drive the two spiral strips 64 to rotate in opposite directions. During the rotation of the spiral strips 64, the bottom paper 15 will be pushed to the positions of the two side plates 11, thereby flattening the bottom paper 15 and preventing the bottom paper 15 from not being in contact with the conveyor belt 1, causing the bottom paper 15 to fold or bulge upwards. Furthermore, since a limiting roller 61 is provided on the left side of the rotating shaft 63, when the bottom paper 15 is flattened and passes the squeezing roller 35, the rotating limiting roller 61 will squeeze and limit the flattened bottom paper 15, preventing the bottom paper 15 from folding again. After restoring to a folded or raised state, the slurry in the feed port 54 will fall onto the flattened base paper 15, thus preventing the slurry from being unable to enter the folded interior of the base paper 15 when there is a fold. At the same time, it can also prevent the slurry falling on the base paper 15 from flowing along the raised surface when there is a bulge, resulting in uneven slurry distribution at different locations. It can also prevent the base paper 15 from bouncing up and down during movement, which would cause the slurry falling on the base paper 15 to flow due to the bouncing, resulting in uneven slurry distribution. Subsequently, the base paper 15 will carry the slurry through the forming and extrusion mechanism 12 for extrusion and molding. More specifically, since the other side of the horizontal plate 65 is bonded to the face paper 14 that has passed through the paper roller 13, and since the other two sides of the horizontal plate 65 are bonded to the side plate 11, under the combined restriction of the horizontal plate 65, the side plate 11, the paper roller 13 and the limiting roller 61, a sealed space can be formed below the feed port 54, thereby preventing external gas from contacting the slurry before extrusion and preventing gas from re-entering the slurry. When the slurry moves with the bottom paper 15, it will pass under the horizontal plate 65 and then be extruded and formed by the forming extrusion mechanism 12. Furthermore, since the size of the discharge port 54 is constant, the squeezed slurry will continuously and evenly flow out of the discharge port 54 and spread evenly on the base paper 15; thus avoiding the problems of cavities easily formed by slurry flow and uneven spreading caused by fluctuations in the amount of slurry in the prior art. Through the dynamic compaction effect of the sealing plate 51, the slurry is always in a stable extrusion state. The slurry flowing out of the discharge port 54 has a uniform thickness and no layering, providing a homogeneous slurry base for subsequent molding and extrusion, effectively avoiding defects such as board thickness deviation and local material shortage caused by uneven slurry spreading; Simultaneously, the rotating shaft 63 drives the spiral strips 64 on both sides to rotate synchronously. The spiral strips 64 push the base paper 15 towards the side plates 11 on both sides, completely flattening the base paper 15 and preventing it from folding or bulging upwards due to not being in contact with the conveyor belt 1. Subsequently, the flattened base paper 15 passes through the elastic rubber limiting roller 61. The rotating limiting roller 61 continuously squeezes and limits the base paper 15, which not only prevents the base paper 15 from returning to a folded or bulging state, but also prevents the base paper 15 from jumping up and down during the conveying process. This ensures that the slurry falls on a flat and stable base paper 15, and that the slurry will not be unable to enter the fold due to wrinkles in the base paper 15, nor will the slurry flow be uneven due to bulging or jumping of the base paper 15. This ensures the uniformity of the slurry spreading from the source and provides a flat base for subsequent molding and extrusion.

[0029] On the other hand, the present invention also provides a fireproof and energy-saving gypsum board, comprising a gypsum board; the gypsum board is prepared using a fireproof and energy-saving gypsum board preparation process.

[0030] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing fire-resistant and energy-saving gypsum board, characterized in that, The preparation process includes the following steps: Step 1: Put the pretreated raw materials into the mixing equipment and mix them at high speed until they are uniformly mixed to make a qualified gypsum slurry with moderate fluidity and uniform solid-liquid suspension, and then transport it to the molding process. Step 2: The base paper (15) and face paper (14) are conveyed to the forming area through the gypsum board forming machine, gypsum slurry is poured in, and then the gypsum board is continuously formed into a wet gypsum board strip that meets the specifications by the forming extrusion mechanism (12) for compound pressing. Step 3: The gypsum board forming machine conveys the wet board strip to the initial setting zone to complete the initial setting. After reaching the specified strength, it is cut to length and trimmed by the cutting unit, and the waste material is recycled and reused. Step 4: Send the cut gypsum board into the drying kiln, control the temperature and time in stages to remove free water and make the moisture content meet the standard. Then, remove unqualified products from the dried gypsum board, and pack and label qualified products according to specifications before storing them in the warehouse.

2. The fireproof and energy-saving gypsum board preparation process according to claim 1, characterized in that: The gypsum board forming machine described in step two includes a conveyor belt (1); the conveyor belt (1) has side plates (11) on both sides, and the conveyor belt (1) rotates between the two side plates (11) and is driven by a first motor; the side plates (11) are installed on the work frame; A forming extrusion mechanism (12) is installed on the side plate (11), and the forming extrusion mechanism (12) is used to extrude and produce a gypsum board strip blank with a compact structure. The forming extrusion mechanism (12) is equipped with a feeding mechanism, which is used to feed the slurry. The extrusion mechanism has a paper roller (13) on its left side, and the paper roller (13) is located between the extrusion mechanism and the feeding mechanism, and is used to convey the face paper (14); the conveyor belt (1) conveys the bottom paper (15), and the bottom paper (15) passes under the feeding mechanism; the feeding mechanism includes a feeding bin (2); The bottom of the feeding hopper (2) is equipped with a guide hopper (21), and the guide hopper (21) is located on the top of the side plate (11); both sides of the guide hopper (21) are fixed with mounting plates (22), and the other side of the mounting plate (22) is fixed on the side plate (11); The bottom of the feeding hopper (2) is V-shaped; a mesh cylinder (3) is fixed at the bottom of the feeding hopper (2), and the mesh cylinder (3) is C-shaped with the opening facing upward; The mesh cylinder (3) has a rotating rod inside; the rotating rod is divided by the middle, and auger plates (31) are fixed on both sides of the dividing line, and the two auger plates (31) have opposite spiral directions and are mirror images of each other; Two auger blades (31) are mounted on opposite sides of a feed hopper (21) with a circular cover (32) attached to them. The circular cover (32) is bolted to the feed hopper (21). The rotating rod rotates on the circular cover (32) and is driven by a second motor. The auger plate (31) is provided with uniformly arranged extrusion holes (33); each extrusion hole (33) is provided with a cutting rod (34); two relatively rotating extrusion rollers (35) are provided above the auger plate (31), and the extrusion rollers (35) rotate in the guide bin (21) and are driven by a third motor, and are opposite to the V-shaped surface at the bottom of the feed bin (2); The mesh cylinder (3) is provided with an inclined platform (4) below it; a connecting plate (41) is fixed on the left side of the inclined platform (4), and a slurry pump (42) is installed on the connecting plate (41) evenly arranged; Below the inclined platform (4) is a trapezoidal plate (43), and the left side of the trapezoidal plate (43) is a plane and the right side is an inclined plane; the right side of the trapezoidal plate (43) is provided with a discharge port (44), and the discharge port (44) is parallel to the bottom paper (15) that passes through.

3. The fireproof and energy-saving gypsum board preparation process according to claim 2, characterized in that: The inclined platform (4) has a rotating belt (45) inside, and the bottom of the rotating belt (45) is flush with the bottom of the inclined platform (4); The outer ring surface of the conveyor belt (45) is fixed with uniformly arranged scrapers (46), and the scrapers (46) are provided with needles; The inclined platform (4) has an annular cavity, and the scraper (46) rotates in the annular cavity; the annular cavity has a suction pipe (47), which extends to the outside and is connected to a small air pump.

4. The fireproof and energy-saving gypsum board preparation process according to claim 3, characterized in that: The trapezoidal plate (43) has uniformly arranged uprights (48) fixed on its inclined surface, and adjacent uprights (48) are staggered.

5. The fireproof and energy-saving gypsum board preparation process according to claim 4, characterized in that: A vibration motor (49) is installed at the bottom of the trapezoidal plate (43), and the other side of the vibration motor (49) is installed at the bottom of the guide hopper (21); the trapezoidal plate (43) slides inside the guide hopper (21); The inclined platform (4) is provided with a cover (23) on the left side, and the cover (23) is fixed to the feed hopper (21) by bolts.

6. The fireproof and energy-saving gypsum board preparation process according to claim 2, characterized in that: The material guide hopper (21) has a rectangular hopper (5) on its right side, and the discharge port (44) is located inside the rectangular hopper (5); The rectangular bin (5) is provided with a sliding sealing plate (51), and the sealing plate (51) is sealed and fitted to the inner ring of the rectangular bin (5) by a sealing strip; the rectangular bin (5) is provided with a vertical plate (52) on the side away from the guide bin (21); A guide rod (53) is fixed on the sealing plate (51), and the guide rod (53) passes through the vertical plate (52); a spring is provided between the sealing plate (51) and the vertical plate (52), and the guide rod (53) passes through the spring; in the initial state, the sealing plate (51) is in contact with the guide hopper (21); The sealing plate (51) is located below the bottom of the rectangular bin (5) with a discharge port (54).

7. The fire-resistant and energy-saving gypsum board preparation process according to claim 6, characterized in that: Both of the two side plates (11) have baffles (6) fixed on their opposite sides, and the bottom paper (15) passes under the baffles (6); The rectangular compartment (5) is provided with a limiting roller (61) below it; the limiting roller (61) rotates between two baffles (6) and is driven by a fourth motor; the limiting roller (61) is provided with an arc-shaped block (62) at the top, and the limiting roller (61) is attached to the bottom of the arc-shaped block (62) and fixed to the top of the rectangular compartment (5); The limiting roller (61) is made of elastic rubber material, and the bottom paper (15) passes through the bottom of the limiting roller (61) and is attached to the limiting roller (61).

8. The fire-resistant and energy-saving gypsum board preparation process according to claim 7, characterized in that: The limiting roller (61) is provided with a rotating shaft (63) on its right side; The rotating shaft (63) is divided by a central line, and rubber spiral strips (64) are provided on both sides of the dividing line. The spiral directions of the two spiral strips (64) are opposite and they are mirror images of each other.

9. The fireproof and energy-saving gypsum board preparation process according to claim 8, characterized in that: The bottom of the feed hopper (21) is fixed with a horizontal plate (65), and the bottom of the horizontal plate (65) is lower than the feed inlet (54); The horizontal plate (65) is attached to the two baffles (6) on both sides facing the baffle (6); the other side of the horizontal plate (65) is an arc-shaped surface and is attached to the paper (14) that has passed through the paper roller (13).

10. A fireproof and energy-saving gypsum board, comprising gypsum board; characterized in that: The gypsum board is prepared using the fireproof and energy-saving gypsum board preparation process described in any one of claims 1 to 9.

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