A plate-making and forming device for improving the quality of calcium silicate board blanks

Abstract

The present invention belongs to the technical field of calcium silicate board production, and specifically relates to a plate-making and forming device for improving the quality of calcium silicate board blanks, including a frame. A headbox, a felt belt, a breast roll, a forming roll, and a cleaning box are installed on the frame. A through port is provided on the cleaning box, and the felt belt passes through the cleaning box from the through port. Guide rollers are installed in the cleaning box, and the felt belt is in a "U" shape in the cleaning box. A water spraying plate is installed in the cleaning box, and the felt belt is immersed below the liquid level in the cleaning box. A cleaning roll is installed in the cleaning box, and the cleaning roll is in contact with the lower surface of the felt belt. The rotation direction of the cleaning roll is opposite to the movement direction of the felt belt. The structure of the present invention is simple. The felt belt can be cleaned in an immersion manner in the cleaning box, and multiple cleaning grids are divided in the cleaning box, improving the cleaning effect of the felt belt and preventing the cleaned slurry from reattaching to the felt belt.

Description

Technical Field

[0001] The present invention belongs to the technical field of calcium silicate board production, and specifically relates to a plate-making and forming device for improving the quality of calcium silicate board blanks. Background Art

[0002] Calcium silicate board belongs to a new generation of "green" building materials, which has unique environmental protection functions based on excellent moisture-proof and fire-proof properties; calcium silicate board is mainly made of silicon powder and calcium powder materials, with natural wood fiber as the reinforcing material, and other auxiliary materials are added externally. After forming by slurry casting, it is a new type of building material generated through high-temperature and high-pressure curing.

[0003] During the forming process of calcium silicate board, a stirrer and a partition are installed in the slurry box of the board-making machine. When the slurry reaches a certain liquid level in the slurry box, it naturally flows onto the felt through the horizontal slurry distribution board and the inclined slurry flow board to form a primary material layer. The primary material layer is forced to dehydrate through multiple vacuum boxes, wound onto the forming cylinder. After reaching the required thickness, the wet blank is removed from the forming cylinder and then processed into various formed products through multiple processes.

[0004] After the wet blank is peeled off and before the felt is loaded with slurry again, the felt needs to be cleaned; however, the existing board-making machines usually do not have a dedicated cleaning device. Most of them fix a water pipe under the felt to wash the felt upward. However, due to the immovable small holes of the water pipe in this structural way, a striped cleaning effect is produced on the felt, resulting in a large amount of slurry residue and incomplete cleaning, causing poor quality of subsequent blank making. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, the present invention provides a plate-making and forming device for improving the quality of calcium silicate board blanks, which performs immersion cleaning on the felt belt in a cleaning box and divides the cleaning box into multiple cleaning grids to improve the cleaning effect of the felt belt and prevent the slurry after cleaning from reattaching to the felt belt.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: The plate-making and forming device for improving the quality of calcium silicate board blanks of the present invention includes a frame, on which a slurry box, a felt belt, a breast roll, and a forming roll are installed. A cleaning box is also installed on the frame, and the cleaning box cleans the felt belt passing through the breast roll.

[0007] A through-opening is provided on the cleaning box, and the felt belt passes through the cleaning box from the through-opening. An upper guide roll and a lower guide roll are installed in the cleaning box from top to bottom. The upper guide roll and the lower guide roll make the felt belt in a "U" shape in the cleaning box, and the plane where the upper guide roll is located is flush with the through-opening.

[0008] A water spray plate is installed in the cleaning box, the water spray plate is located above the horizontal part of the "凵", the liquid level in the cleaning box is located between the upper guide roller and the lower guide roller, a water inlet pipe is installed on the water spray plate, and a cleaning drain pipe is installed on the bottom surface of the cleaning box;

[0009] A cleaning roller is installed in the cleaning box. The cleaning roller is in contact with the lower surface of the wool belt. The rotation direction of the cleaning roller is opposite to the movement direction of the wool belt.

[0010] Preferably, symmetrically arranged rubber plates are installed in the through opening, the felt belt passes between the rubber plates, the rubber plates contact and press the felt belt, and the rubber plates seal the through opening.

[0011] Preferably, the cross section of the rubber sheet is in the shape of a horizontally placed "human", and the tip of the "human" shape is in the opposite direction of movement of the felt belt.

[0012] Preferably, a magnetic block is installed at one end of the rubber plate close to the felt belt, and there is a magnetic force of mutual attraction between the magnetic blocks.

[0013] Preferably, a plurality of partitions are installed on the bottom surface of the cleaning box, and the partitions divide the space in the cleaning box into a plurality of cleaning compartments. The upper ends of the partitions just contact with the lower surface of the wool belt, and cleaning rollers are provided in the cleaning compartments.

[0014] Preferably, a brush plate is installed on the inner wall of the cleaning box, the brush plate is in contact with the side of the wool belt, and the brush plate seals the gap between the wool belt and the inner wall of the cleaning box.

[0015] Preferably, a connecting pipe is installed on the bottom surface of the cleaning box, and there is a one-to-one correspondence between the connecting pipe and the cleaning grid. The bottom surface of the cleaning box is inclined, and the connecting pipe is located at the lower end of the bottom surface. A one-way valve is installed on the connecting pipe. The end of the connecting pipe away from the cleaning box is installed with a collection box through a mounting rod, and the cleaning drain pipe is connected to the collection box.

[0016] Preferably, the headboxes are provided in multiple groups, and the number of the headboxes is at least three.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The plate-making and forming device for improving the quality of calcium silicate board blanks according to the present invention, by arranging a cleaning box, upper guide rollers, lower guide rollers, a water spraying plate, cleaning rollers and a partition plate, enables the felt belt to be immersed in water after entering the cleaning box, reabsorb the residual slurry on the felt belt, weaken the bonding force between the felt belt and the slurry, facilitate the cleaning of the felt belt by the cleaning rollers, and enable the felt belt to be comprehensively cleaned, avoiding a striped cleaning effect. At the same time, the partition plate divides the cleaning box into multiple cleaning grids, enabling the felt belt to be cleaned at multiple levels, preventing the fallen slurry from reattaching to the felt belt, and improving the cleaning effect of the felt belt.

[0019] 2. The plate-making and forming device for improving the quality of calcium silicate board blanks according to the present invention, by arranging a rubber plate, closes the cleaning box to prevent the water in the cleaning box from leaking. At the same time, it cleans the residual slurry on the surface of the felt belt when the felt belt enters the cleaning box, reduces the difficulty of cleaning the felt belt in the cleaning box, and squeezes the felt belt when it leaves the cleaning box, reducing the water carried by the felt belt when it leaves the cleaning box and avoiding affecting the forming quality of the subsequent blank.

[0020] 3. The plate-making and forming device for improving the quality of calcium silicate board blanks according to the present invention, by arranging multiple sets of head boxes, buffers the slurry after it enters the head box, avoids the impact and churning between the slurries, resulting in unstable slurry state, ensures the stable outflow of the slurry when it is discharged, enables the slurry to be evenly laid on the felt belt, and thus cooperates with the clean and tidy felt belt after cleaning to improve the forming quality of the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a perspective view of the forming device of the present invention;

[0023] Figure 2 is a perspective view of the cleaning box in the forming device of the present invention;

[0024] Figure 3 is a schematic structural view of the cleaning box in the forming device of the present invention; the arrow direction is the moving direction of the felt belt;

[0025] Figure 4 is Figure 3 a partial enlarged view of part A in

[0026] Figure 5 is Figure 3 a partial enlarged view of part B in

[0027] In the figure: frame 1, headbox 11, breast roll 12, forming roll 13, natural dewatering box 2, vacuum dewatering box 3, cleaning box 4, through port 41, rubber plate 411, magnetic block 412, upper guide roll 42, lower guide roll 43, water spraying plate 44, water inlet pipe 441, cleaning roll 45, motor 451, partition board 46, brush plate 47, collection box 48, connecting pipe 481, cleaning drain pipe 482, mounting rod 483, felt belt 5. Specific embodiments

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] As Figures 1 to 5 shown, a plate-making and forming device for improving the quality of calcium silicate board blanks according to the present invention includes a frame 1, on which a headbox 11, a felt belt 5, a breast roll 12 and a forming roll 13 are installed. A cleaning box 4 is also installed on the frame 1, and the cleaning box 4 cleans the felt belt 5 passing through the breast roll 12.

[0030] A through port 41 is opened on the cleaning box 4, and the felt belt 5 passes through the cleaning box 4 from the through port 41. An upper guide roll 42 and a lower guide roll 43 are installed in the cleaning box 4 from top to bottom. The upper guide roll 42 and the lower guide roll 43 make the felt belt 5 in a "U" shape in the cleaning box 4, and the plane where the upper guide roll 42 is located is flush with the through port 41.

[0031] A water spraying plate 44 is installed in the cleaning box 4, and the water spraying plate 44 is located above the horizontal part of the "U". The liquid level in the cleaning box 4 is between the upper guide roll 42 and the lower guide roll 43. A water inlet pipe 441 is installed on the water spraying plate 44, and a cleaning drain pipe 482 is installed on the bottom surface of the cleaning box 4.

[0032] A cleaning roll 45 is installed in the cleaning box 4, and the cleaning roll 45 is in contact with the lower surface of the felt belt 5. The rotation direction of the cleaning roll 45 is opposite to the movement direction of the felt belt 5.

[0033] When forming the calcium silicate board, the slurry is coated from the headbox 11 onto the felt belt 5. After the slurry on the felt belt 5 is dewatered by the natural dewatering box 2 and the vacuum dewatering box 3, the slurry reaches the breast roll 12 at the right end of the frame 1. After being extruded between the forming roll 13 and the breast roll 12, the slurry on the felt belt 5, that is, the blank formed by dehydration, adheres to the forming roll 13. When the blank on the forming roll 13 reaches the designed thickness, it is automatically cut off to become a standard board blank for subsequent process treatment.

[0034] Meanwhile, after the slurry on the felt belt 5 is separated, the felt belt 5 passes through the cleaning tank 4 to clean the residual slurry on the felt belt 5, ensuring that the surface of the felt belt 5 is clean, avoiding problems such as poor surface quality, sticking of the blank, and dropping of the blank in the subsequent formed blank due to the residual slurry when the felt belt 5 operates in a cycle, which affects the quality of the calcium silicate board blank. At the same time, the mechanisms for guiding and tensioning the felt belt 5 are prior art and are not detailed in the accompanying drawings of the specification;

[0035] Meanwhile, after the felt belt 5 enters the cleaning tank 4, under the action of the upper guide roller 42 and the lower guide roller 43, the felt belt 5 passes through the water in the cleaning tank 4, so that the felt belt 5 is immersed and soaked in the water used for cleaning, facilitating the re-absorption and dilution of the slurry on the felt belt 5, weakening the bonding force between the residual slurry and the felt belt 5, and facilitating the detachment of the residual slurry from the felt belt 5, thereby improving the cleaning effect of the felt belt 5. At the same time, when the felt belt 5 is immersed in the water, the motor 451 installed on the side wall of the cleaning tank 4 drives the cleaning roller 45 to rotate, so that the cleaning roller 45 rubs and stirs the lower surface of the felt belt 5, that is, the surface of the felt belt 5 for carrying the slurry, scraping off the residual slurry on the felt belt 5 and ensuring the cleaning effect of the felt belt 5. At the same time, when the cleaning roller 45 rotates, the cleaning roller 45 will drive the water to flow, generating an impact water flow that flushes the surface of the felt belt 5, further accelerating and promoting the detachment of the residual slurry on the surface of the felt belt 5 and improving the cleaning effect on the felt belt 5;

[0036] Meanwhile, since the felt belt 5 is immersed and soaked in the water, combined with the cleaning of the surface of the felt belt 5 by the cleaning roller 45, the surface of the felt belt 5 can be cleaned everywhere, avoiding the generation of striped cleaning effects on the surface of the felt belt 5, resulting in residual slurry on the felt belt 5 and affecting the forming effect of the subsequent blank;

[0037] Meanwhile, in the cleaning tank 4, the cleaning water is sent into the water spraying plate 44 through the water inlet pipe 441, so that the water flushes downward from the water spraying plate 44 to impact the upper surface of the felt belt 5. Combining with the discharge of water by the cleaning drain pipe 482 on the cleaning tank 4, a water flow is formed between the upper and lower sides of the felt belt 5, flushing and cleaning the slurry that penetrates into the felt belt 5 or the slurry on the other side during the slurry dewatering process, further ensuring the cleanliness of the felt belt 5 and improving the forming effect of the subsequent blank;

[0038] Meanwhile, since the water spraying plate 44 is located above the felt belt 5 and the cleaning drain pipe 482 is connected to the bottom surface of the cleaning tank 4, when cleaning the felt belt 5, the water in the cleaning tank 4 will flow from top to bottom, promoting the downward movement of the slurry cleaned from the felt belt 5, facilitating the discharge of the cleaned slurry from the cleaning tank 4, and avoiding the reattachment of the cleaned slurry to the felt belt 5, which affects the cleaning effect on the felt belt 5.

[0039] As an embodiment of the present invention, symmetrically arranged rubber plates 411 are installed in the through opening 41, and the felt belt 5 passes between the rubber plates 411. The rubber plates 411 contact and squeeze the felt belt 5, and the rubber plates 411 seal the through opening 41.

[0040] By arranging a rubber plate 411 at the through port 41, the through port 41 is relatively closed, thereby reducing the possibility of water in the cleaning box 4 leaking from the through port 41 during the cleaning process of the woolen belt 5. At the same time, since the rubber plate 411 contacts and squeezes the woolen belt 5, the woolen belt 5 is relatively stable at the through port 41, thereby preventing the woolen belt 5 from shaking, causing the woolen belt 5 to shift in the cleaning box 4, and affecting the cleaning effect of the woolen belt 5.

[0041] As an embodiment of the present invention, the cross section of the rubber plate 411 is a horizontally placed "human" shape, and the tip of the "human" shape moves in the opposite direction to the felt belt 5;

[0042] Since the rubber sheet 411 is in the shape of a "human" placed horizontally, when the wool belt 5 enters the cleaning box 4 from the through port 41, the slurry remaining on the surface of the wool belt 5 will be scraped and cleaned by the rubber sheet 411, thereby reducing the amount of slurry remaining on the wool belt 5 entering the cleaning box 4, making it easier for the wool belt 5 to be cleaned in the cleaning box 4. At the same time, it can also avoid excessive slurry remaining on the wool belt 5, resulting in a relatively large amount of slurry cleaned in the cleaning box 4, causing the water in the cleaning box 4 to quickly become dirty, affecting the cleaning effect of the wool belt 5, and shortening the maintenance cycle of the cleaning box 4. At the same time, when the wool belt 5 enters the cleaning box 4, the "human" shape of the rubber sheet 411 placed horizontally will cause the fallen slurry to be located outside the cleaning box 4, making it convenient to collect the slurry cleaned by the rubber sheet 411 for recycling.

[0043] At the same time, when the felt belt 5 leaves the cleaning box 4 from the through port 41, the rubber plate 411 squeezes and scrapes the felt belt 5 to clean the residual water on the felt belt 5, so that the felt belt 5 leaving the cleaning box 4 carries relatively less water, thereby preventing the felt belt 5 from containing too much water, which may affect the stable distribution of the slurry on the felt belt 5 when the felt belt 5 carries the slurry again, and affect the forming effect of the blank. At the same time, the rubber plate 411 squeezes the felt belt 5 leaving the cleaning box 4, thereby preventing the felt belt 5 from bringing out the water in the cleaning box 4, thereby causing the water in the cleaning box 4 to leak and cause ground pollution.

[0044] At the same time, the water after cleaning the felt belt 5 in the cleaning box 4 will enter the sedimentation tank or other equipment for treatment, and the slurry carried in the water will be recovered to avoid slurry waste and direct discharge of cleaning water to cause environmental pollution.

[0045] As an embodiment of the present invention, a magnetic block 412 is installed at one end of the rubber plate 411 close to the felt belt 5, and there is a magnetic force of mutual attraction between the magnetic blocks 412;

[0046] By installing the magnetic blocks 412 on the rubber plate 411, the rubber plates 411 above and below the felt belt 5 attract and approach each other, improving the pressing force of the rubber plate 411 on the felt belt 5, and further improving the cleaning effect of the rubber plate 411 on the residual slurry and water on the felt belt 5, avoiding the influence on the cleaning effect of the felt belt 5 when the rubber plate 411 ages and loosens or the felt belt 5 vibrates;

[0047] At the same time, the rubber plates 411 will approach each other under the action of the magnetic blocks 412, further ensuring the sealing effect of the rubber plate 411 on the through-port 41, and avoiding the leakage of water in the cleaning box 4 and causing pollution to the ground.

[0048] As an embodiment of the present invention, a plurality of partition plates 46 are installed on the bottom surface of the cleaning box 4. The partition plates 46 divide the space inside the cleaning box 4 into multiple cleaning grids. The upper ends of the partition plates 46 just contact the lower surface of the felt belt 5, and cleaning rollers 45 are arranged in each cleaning grid;

[0049] After installing the partition plates 46 in the cleaning box 4, the space below the felt belt 5 in the cleaning box 4 will be divided into multiple cleaning grids. Each cleaning grid is relatively isolated from each other, avoiding or reducing the flow of water in the cleaning box 4 between different cleaning grids, so that the water in the cleaning grid close to the leaving direction of the felt belt 5 in the cleaning box 4 is relatively clean. When the felt belt 5 passes through the cleaning box 4, it is subjected to multi-stage cleaning, and each stage of cleaning will be cleaner than the previous stage, thus effectively improving the cleaning effect of the felt belt 5 and avoiding the pollution of the water in the cleaning box 4 by the slurry falling off the felt belt 5, resulting in the reattachment of the falling-off slurry to the felt belt 5 when the felt belt 5 is about to leave the cleaning box 4 and affecting the cleaning effect of the felt belt 5;

[0050] At the same time, the arranged partition plates 46 contact the lower surface of the felt belt 5, and will scrape the surface of the felt belt 5 again when the felt belt 5 passes through, further promoting the detachment of the residual slurry on the felt belt 5 and avoiding the residual slurry on the felt belt 5 from being brought into the next-stage cleaning grid, improving the cleaning effect of the felt belt 5 and ensuring good forming effect of the subsequent blank.

[0051] As an embodiment of the present invention, a brush plate 47 is installed on the inner wall of the cleaning box 4. The brush plate 47 contacts the side surface of the felt belt 5, and the brush plate 47 seals the gap between the felt belt 5 and the inner wall of the cleaning box 4;

[0052] Since the felt belt 5 is immersed in the water in the cleaning tank 4, during the movement of the felt belt 5, there will be a situation where the water in the felt belt 5 in the previous cleaning grid is carried and brought into the next cleaning grid from above the partition plate 46 and the gap between the felt belt 5 and the inner wall of the cleaning tank 4, which will affect the cleaning effect of the multi-stage cleaning grid on the felt belt 5. Therefore, the gap between the felt belt 5 and the inner wall of the cleaning tank 4 is blocked and sealed by the brush plate 47, so as to reduce the flow of water between different cleaning grids and prevent the slurry cleaned down from being carried into the next cleaning grid, affecting the cleaning effect of the felt belt 5;

[0053] At the same time, since there will be gaps between the bristles on the brush plate 47 and the bristles can be bent and deformed, the slurry washed down from the water spraying plate 44 on the felt belt 5 can also smoothly pass through the brush plate 47 and reach the lower part of the felt belt 5, and then smoothly drain out of the cleaning tank 4.

[0054] As an implementation manner of the present invention, a connecting pipe 481 is installed on the bottom surface of the cleaning tank 4, and the connecting pipes 481 correspond to the cleaning grids one by one. The bottom surface of the cleaning tank 4 is inclined, the connecting pipe 481 is located at the lower end of the bottom surface, a one-way valve is installed on the connecting pipe 481, and a collecting box 48 is installed at the end of the connecting pipe 481 away from the cleaning tank 4 through a mounting rod 483. The cleaning drain pipe 482 is connected to the collecting box 48;

[0055] By setting multiple groups of connecting pipes 481 and the inclined bottom surface in the cleaning tank 4, the water and the slurry cleaned down in each cleaning grid can be smoothly drained out of the cleaning tank 4, avoiding the need for the water in different cleaning grids to converge together before draining out of the cleaning tank 4, thus avoiding the mixing of the slurry cleaned in the cleaning grids and causing cross-contamination between the cleaning grids, affecting the cleaning effect of the felt belt 5.

[0056] As an implementation manner of the present invention, multiple groups of head boxes 11 are provided, and there are at least three head boxes 11;

[0057] By setting multiple groups of head boxes 11, after the slurry enters the head box 11, it can be buffered in the first head box 11 to stabilize the state of the slurry, avoiding directly starting to agitate the slurry after it enters the head box 11, thus avoiding the impact and churning of the slurry, resulting in an unstable state of the slurry, ensuring a stable outflow when the slurry is discharged, enabling the slurry to be evenly laid on the felt belt 5, and at the same time, cooperating with the felt belt 5 with a clean and tidy surface after cleaning, fully improving the forming quality of the blank.

[0058] The specific working process is as follows:

[0059] When forming the calcium silicate board, the slurry is applied to the felt belt 5 from the headbox 11. After the slurry on the felt belt 5 is dehydrated by the natural dehydration box 2 and the vacuum dehydration box 3, the slurry reaches the breast roller 12 at the right end of the frame 1. After being squeezed between the forming roller 13 and the breast roller 12, the slurry on the felt belt 5, that is, the dehydrated blank, is bonded to the forming roller 13. After the blank on the forming roller 13 reaches the designed thickness, it is automatically cut off to become a standard slab for subsequent processing;

[0060] At the same time, after the slurry on the felt belt 5 is separated, the felt belt 5 will pass through the cleaning box 4 to clean the slurry remaining on the felt belt 5;

[0061] At the same time, after the wool belt 5 enters the cleaning box 4, under the action of the upper guide roller 42 and the lower guide roller 43, the wool belt 5 will pass through the water in the cleaning box 4, so that the wool belt 5 is immersed and soaked in the water used for cleaning, so that the slurry on the wool belt 5 can absorb water and be diluted again, so that the bonding force between the residual slurry and the wool belt 5 is weakened, and the residual slurry can be separated from the wool belt 5. At the same time, when the wool belt 5 is immersed in the water, the motor 451 installed on the side wall of the cleaning box 4 drives the cleaning roller 45 to rotate, so that the cleaning roller 45 rubs and stirs the lower surface of the wool belt 5, that is, the surface of the wool belt 5 used to carry the slurry, and scrapes off the residual slurry on the wool belt 5. At the same time, when the cleaning roller 45 rotates, the cleaning roller 45 will drive the water to flow, so that the impact water flow will wash the surface of the wool belt 5;

[0062] At the same time, in the cleaning box 4, the cleaning water is sent to the water spraying plate 44 through the water inlet pipe 441, so that the water is flushed downward from the water spraying plate 44, and the water is discharged by the cleaning drain pipe 482 on the cleaning box 4, so that a water flow is formed between the upper and lower parts of the felt belt 5, so that the slurry that penetrates into the felt belt 5 or the other side during the slurry dehydration process is flushed and cleaned;

[0063] At the same time, the water in the cleaning box 4 will flow from top to bottom, promoting the slurry cleaned from the felt belt 5 to move downward, making it easier for the cleaned slurry to be discharged from the cleaning box 4;

[0064] By providing the rubber plate 411, the through opening 41 is relatively closed, so that the felt belt 5 is relatively stable at the through opening 41;

[0065] Since the rubber sheet 411 is in the shape of a "human" placed horizontally, when the felt belt 5 enters the cleaning box 4 from the through opening 41, the slurry remaining on the surface of the felt belt 5 will be scraped and cleaned by the rubber sheet 411;

[0066] Meanwhile, when the felt belt 5 leaves the cleaning box 4 through the passing opening 41, the rubber plate 411 will squeeze and scrape the felt belt 5 to clean the residual water on the felt belt 5, so that the water carried by the felt belt 5 leaving the cleaning box 4 is relatively less;

[0067] By installing magnetic blocks 412 on the rubber plate 411, the rubber plates 411 above and below the felt belt 5 attract and approach each other, increasing the pressing force of the rubber plate 411 on the felt belt 5, and thus improving the cleaning effect of the rubber plate 411 on the residual slurry and water on the felt belt 5;

[0068] After installing the partition plate 46 in the cleaning box 4, the space below the felt belt 5 in the cleaning box 4 will be divided into multiple cleaning grids, and each cleaning grid is relatively isolated from each other, avoiding or reducing the flow of water in the cleaning box 4 between different cleaning grids. As a result, the water in the cleaning grid near the leaving direction of the felt belt 5 in the cleaning box 4 is relatively clean, enabling the felt belt 5 to be cleaned at multiple levels during the process of passing through the cleaning box 4, and each level of cleaning will be cleaner than the previous level;

[0069] Meanwhile, the installed partition plate 46 contacts the lower surface of the felt belt 5, and will scrape and clean the surface of the felt belt 5 again when the felt belt 5 passes through;

[0070] By using the brush plate 47 to block and seal the gap between the felt belt 5 and the inner wall of the cleaning box 4, the flow of water between different cleaning grids is reduced, preventing the scraped slurry from being carried to the next-level cleaning grid;

[0071] Meanwhile, due to the gaps between the bristles on the brush plate 47 and the ability of the bristles to bend and deform, the slurry washed down from the felt belt 5 by the water spraying plate 44 can also smoothly pass through the brush plate 47 and reach below the felt belt 5, and then be smoothly discharged from the cleaning box 4;

[0072] By setting multiple groups of connecting pipes 481 and the inclined bottom surface inside the cleaning box 4, the water and the scraped slurry in each cleaning grid can be smoothly discharged from the cleaning box 4, avoiding the need for the water in different cleaning grids to converge together before being discharged from the cleaning box 4;

[0073] By setting multiple groups of head boxes 11, after the slurry enters the head box 11, it can be buffered in the first head box 11 to stabilize the state of the slurry, avoiding the direct agitation of the slurry as soon as it enters the head box 11, thus preventing the impact and churning of the slurry, which may cause the unstable state of the slurry. This ensures the stable outflow of the slurry during discharging, enabling the slurry to be evenly laid on the felt belt 5. At the same time, in cooperation with the felt belt 5 with a clean and tidy surface after cleaning, the forming quality of the blank is fully improved.

[0074] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate-making and forming device for improving the quality of calcium silicate board blanks, comprising a frame (1), on which a flow box (11), a felt belt (5), a breast roll (12) and a forming roll (13) are installed. A cleaning box (4) is also installed on the frame (1), and the cleaning box (4) cleans the felt belt (5) passing through the breast roll (12). Features: A through hole (41) is formed in the cleaning box (4), and the felt belt (5) passes through the cleaning box (4) from the through hole (41). An upper guide roll (42) and a lower guide roll (43) are installed in the cleaning box (4) from top to bottom. The upper guide roll (42) and the lower guide roll (43) make the felt belt (5) in the shape of "凵" in the cleaning box (4), and the plane where the upper guide roll (42) is located is flush with the through hole (41). A water spraying plate (44) is installed in the cleaning box (4), and the water spraying plate (44) is located above the horizontal part of the "凵". The liquid level in the cleaning box (4) is between the upper guide roll (42) and the lower guide roll (43). A water inlet pipe (441) is installed on the water spraying plate (44), and a cleaning drain pipe (482) is installed on the bottom surface of the cleaning box (4). A cleaning roll (45) is installed in the cleaning box (4), and the cleaning roll (45) is in contact with the lower surface of the felt belt (5). The rotating direction of the cleaning roll (45) is opposite to the moving direction of the felt belt (5). Symmetrically arranged rubber plates (411) are installed in the through hole (41), and the felt belt (5) passes between the rubber plates (411). The rubber plates (411) contact and squeeze the felt belt (5), and the rubber plates (411) close the through hole (41). The cross-section of the rubber plate (411) is in the shape of "人" placed horizontally, and the tip of the "人" shape is opposite to the moving direction of the felt belt (5). Magnetic blocks (412) are installed at one end of the rubber plate (411) close to the felt belt (5), and there is a magnetic force of mutual attraction between the magnetic blocks (412). A brush plate (47) is installed on the inner wall of the cleaning box (4), and the brush plate (47) is in contact with the side surface of the felt belt (5). The brush plate (47) closes the gap between the felt belt (5) and the inner wall of the cleaning box (4). There are at least three flow boxes (11). Multiple groups of partition plates (46) are installed on the bottom surface of the cleaning box (4). The partition plates (46) divide the space in the cleaning box (4) into multiple cleaning grids. The upper ends of the partition plates (46) are exactly in contact with the lower surface of the felt belt (5), and cleaning rolls (45) are arranged in each cleaning grid.

2. A plate-making and forming device for improving the quality of calcium silicate board blanks according to claim 1, characterized in that: A connecting pipe (481) is installed on the bottom surface of the cleaning box (4), and the connecting pipe (481) corresponds to the cleaning grid one by one. The bottom surface of the cleaning box (4) is arranged obliquely, and the connecting pipe (481) is located at the lower end of the bottom surface. A one-way valve is installed on the connecting pipe (481). The end of the connecting pipe (481) away from the cleaning box (4) is installed with a collection box (48) through a mounting rod (483), and the cleaning drainage pipe (482) is connected to the collection box (48).

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