Wire part dehydration device for papermaking

Abstract

The utility model relates to the technical field of papermaking, in particular to a papermaking net portion dehydration device which comprises a dehydration pool, a forming net, a first dehydration plate and a second dehydration plate, a dehydration tank is arranged at the upper end of the dehydration pool, and the forming net, the first dehydration plate and the second dehydration plate are sequentially and fixedly connected to the tank wall of the dehydration tank from top to bottom; the forming net is used for covering a groove opening of the dewatering groove, the first dewatering plate is provided with a plurality of first dewatering openings, the second dewatering plate is provided with a plurality of second dewatering openings, the second dewatering openings are communicated with the first dewatering openings, and the diameter of the second dewatering openings is larger than that of the first dewatering openings. Water is discharged through the forming net, the first dewatering plate and the second dewatering plate in sequence, the two dewatering plates reduce the frequency of shutdown and replacement of the dewatering plates of the dewatering device, the production efficiency is improved, meanwhile, the denser first dewatering openings can be formed, the water passing path is increased, and the dewatering rate is improved.

Description

Technical Field

[0001] The present application relates to the field of papermaking, and in particular to a wire dewatering device for papermaking. Background Art

[0002] Wire dewatering and forming is a basic step in the papermaking process, which occurs in the forming section of the paper machine. The wire dewatering and forming technology converts the fiber-containing suspension into a wet paper web while removing most of the water.

[0003] However, the existing wire dehydration and forming technology, due to the negative pressure port on the dehydration panel, the forming wire is constantly squeezed and rubbed against the dehydration panel, resulting in rapid wear of the dehydration panel and the forming wire, thereby affecting the dehydration and forming of the paper. When the dehydration panel is worn, it takes time to stop and replace it, which reduces production efficiency. Utility Model Content

[0004] In order to improve production efficiency, the present application provides a wire dewatering device for papermaking.

[0005] The present application provides a papermaking wire dewatering device, which adopts the following technical solution:

[0006] A papermaking wire dewatering device comprises a dewatering tank, a forming wire, a first dewatering plate and a second dewatering plate. A dewatering tank is provided at the upper end. The forming wire, the first dewatering plate and the second dewatering plate are fixedly connected to the tank wall of the dewatering tank in sequence from top to bottom. The forming wire is used to cover the notch of the dewatering tank. The first dewatering plate is provided with a plurality of first dewatering ports. The second dewatering plate is provided with a plurality of second dewatering ports. The second dewatering ports are connected to the first dewatering ports. The diameter of the second dewatering ports is larger than that of the first dewatering ports.

[0007] By adopting the above technical solution, moisture is discharged in sequence through the forming net, the first dewatering plate and the dewatering plate. The two dewatering plates reduce the frequency of shutdown of the dewatering device to replace the dewatering plates, thereby improving production efficiency. At the same time, a more dense first dewatering port can be set, which increases the path for moisture to pass through and improves the dehydration rate.

[0008] Preferably, the first dehydration plate and the second dehydration plate are both made of ceramic.

[0009] By adopting the above technical solution, ceramic material is used as the dehydration plate material. Ceramic material has the characteristics of not being easily deformed at high temperatures and is suitable for the high temperature environment of the papermaking machine. The ceramic dehydration plate has good wear resistance, which reduces the wear of the dehydration plate and the forming mesh, while extending the service life of the dehydration plate, reducing the frequency of shutdown and replacement, improving production efficiency, and ensuring the stability of the dehydration process.

[0010] Preferably, the distribution density of the plurality of first dehydration ports on the first dehydration plate is greater than the distribution density of the plurality of second dehydration ports on the second dehydration plate, and one second dehydration port is connected to the plurality of first water ports.

[0011] By adopting the above technical solution, the dense distribution of the first dehydration ports increases the paths for water to pass through, thereby improving the dehydration rate.

[0012] Preferably, an air extraction port is provided on the outer wall of the dehydration tank, the height of the air extraction port is smaller than the height of the second dehydration plate, and the air extraction port is connected to the dehydration tank.

[0013] By adopting the above technical solution, air is extracted through the air extraction port so that negative pressure is formed between the first dehydration port and the second dehydration port, thereby facilitating dehydration and improving the dehydration rate.

[0014] Preferably, it also includes a fixed plate and a sealing block, wherein the fixed plate is fixedly connected to the wall of the dehydration trough, the fixed plate is arranged between the second dehydration plate and the air suction port, the fixed plate is provided with a plurality of openings, and the openings vertically penetrate the fixed plate, the sealing block is slidably connected to the upper end of the fixed plate, and the sealing block is used to control the opening and closing of the openings.

[0015] By adopting the above technical solution, the use of the sealing block facilitates timely control of the air inlet and outlet of the opening, facilitates timely adjustment of the air inlet and outlet volume of the opening, and improves the dehydration quality.

[0016] Preferably, there are multiple sealing blocks, and the multiple sealing blocks are arranged along the length direction of the dehydration tank.

[0017] By adopting the above technical solution, the number of the openings connected to the second dehydration opening can be adjusted according to the width of the facial paper, thereby improving resource utilization, reducing the phenomenon of affecting the dehydration quality of the facial paper due to air intake at the place where there is no facial paper, and improving the dehydration quality.

[0018] Preferably, the sealing block is provided with a plurality of through-openings, the through-openings vertically penetrate the sealing block, the through-openings are arranged in a one-to-one correspondence with the second dehydration openings, and the through-openings are arranged in a one-to-one correspondence with the through-openings.

[0019] By adopting the above technical solution, the communication and dislocation between the through opening and the through opening are controlled by controlling the sliding of the sealing block, and the operation is simple and convenient.

[0020] Preferably, the outer wall of the dehydration tank is provided with a disassembly port, the disassembly port is connected to the dehydration tank, the disassembly port is provided between the second dehydration plate and the fixed plate, and the disassembly port is used for allowing the sealing block to slide into the dehydration tank.

[0021] By adopting the above technical solution, the sealing block is easy to disassemble and assemble, and the sealing block is easy to clean, thereby improving the disassembly and assembly efficiency.

[0022] Preferably, it also includes a limit plate, which is fixedly connected to the outer wall of the dehydration tank, and the limit plate is used to cover the disassembly and assembly port. The limit plate is provided with a strip port, and the strip port is connected to the disassembly and assembly port. The sealing block is fixedly connected to a connecting column at one end toward the limit plate, and the connecting column is slidably connected to the inner wall of the strip port.

[0023] By adopting the above technical solution, the position of the sealing block can be easily adjusted, which is convenient for users to use.

[0024] Preferably, it also includes a partition, the upper end of the partition is fixedly connected to the lower end of the fixed plate, and the lower end of the partition is fixedly connected to the bottom of the dehydration tank. There are multiple partitions, and the multiple partitions are evenly spaced along the width direction of the dehydration tank. The fixed plate, partition, the bottom of the dehydration tank and the wall of the dehydration tank are combined to form a plurality of air extraction cavities. There are multiple air extraction ports, and the multiple air extraction ports are evenly spaced along the width direction of the dehydration tank. The number of the air extraction ports is equal to the number of the air extraction cavities.

[0025] By adopting the above technical solution and dividing the paper into multiple vacuum chambers, the vacuum degree of each vacuum chamber can be adjusted and set to achieve gradual and orderly paper dehydration, avoiding damage to the paper sheet structure caused by excessive dehydration at one time, and adapting to the dehydration conditions of different types of paper, thereby improving the overall dehydration efficiency and reducing energy consumption.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Water is discharged through the forming screen, the first dewatering plate and the second dewatering plate in sequence. The two dewatering plates reduce the frequency of dewatering device shutdown for replacement of dewatering plates, improving production efficiency. At the same time, more dense first dewatering ports can be set, increasing the paths for water to pass through and improving the dehydration rate.

[0028] 2. Ceramic material is used as the dehydration plate material. Ceramic material has the characteristics of not easily deforming at high temperature, which is suitable for the high temperature environment of papermaking machines. Ceramic dehydration plates have good wear resistance, which reduces the wear of dehydration plates and forming wires, while extending the service life of dehydration plates, reducing the frequency of shutdown and replacement, improving production efficiency, and ensuring the stability of the dehydration process;

[0029] 3. It is convenient to adjust the number of openings connected to the second dehydration opening according to the width of the facial paper, improve resource utilization, reduce the phenomenon of affecting the dehydration quality of facial paper due to air intake at the place where there is no facial paper, and improve the dehydration quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a schematic diagram of the overall structure of a wire dewatering device for papermaking.

[0031] Figure 2 The present invention is a cross-sectional view of a wire dewatering device for papermaking.

[0032] Figure 3 The present invention is a schematic diagram of the internal structure of a papermaking wire dewatering device after being cut open.

[0033] Explanation of the accompanying symbols: 1. Dehydration tank; 11. Dehydration trough; 12. Disassembly and assembly port; 13. Exhaust chamber; 14. Exhaust port; 2. Forming net; 3. First dehydration plate; 31. First dehydration port; 4. Second dehydration plate; 41. Second dehydration port; 5. Fixed plate; 51. Through port; 6. Sealing block; 61. Through port; 62. Connecting column; 7. Limiting plate; 71. Strip port; 8. Partition; 9. Vacuum pump. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The present application discloses a papermaking wire dewatering device. Figure 1 and Figure 2 A papermaking wire dewatering device includes a dewatering tank 1, a forming wire 2, a first dewatering plate 3, a second dewatering plate 4, a fixing plate 5, a sealing block 6, a limiting plate 7, a partition 8 and a vacuum pump 9.

[0036] Reference Figure 2 A dewatering trough 11 is provided at the upper end of the dewatering pool 1. The forming net 2, the first dewatering plate 3, the second dewatering plate 4 and the fixed plate 5 are fixedly connected to the trough wall of the dewatering trough 11 from top to bottom. The forming net 2 is used to cover the notch of the dewatering trough 11.

[0037] The upper end of the first dehydration plate 3 is attached to the lower end of the forming network 2. The first dehydration plate 3 is provided with a plurality of first dehydration ports 31, which are evenly distributed on the first dehydration plate 3 and vertically penetrate the first dehydration plate 3. The upper end of the second dehydration plate 4 is attached to the lower end of the first dehydration plate 3. The second dehydration plate 4 is provided with a plurality of second dehydration ports 41, which are evenly distributed on the second dehydration plate 4 and vertically penetrate the second dehydration plate 4. The diameter of the second dehydration ports 41 is larger than the diameter of the first dehydration ports 31. The distribution density of the plurality of first dehydration ports 31 on the first dehydration plate 3 is greater than the distribution density of the plurality of second dehydration ports 41 on the second dehydration plate 4. One second dehydration port 41 is connected to four first dehydration ports 31. The materials of the first dehydration plate 3 and the second dehydration plate 4 are both set to ceramic. The fixed plate 5 is provided with a plurality of through openings 51 , which vertically penetrate the fixed plate 5 . The through openings 51 are arranged in a one-to-one correspondence with the second dehydration ports 41 .

[0038] Reference Figure 2The sealing block 6 is arranged between the second dehydration plate 4 and the fixed plate 5. There are multiple sealing blocks 6, and multiple sealing blocks 6 are arranged along the length direction of the dehydration tank 1. The upper end of the sealing block 6 is slidably connected to the lower end of the second dehydration plate 4, and the lower end of the sealing block 6 is slidably connected to the upper end of the fixed plate 5. The sliding direction of the sealing block 6 is parallel to the length direction of the dehydration tank 1. The sealing block 6 is provided with multiple through-holes 61, which vertically penetrate the sealing block 6. The through-holes 61 are arranged one-to-one with the through-holes 51. The sealing block 6 is used to control the on and off of the through-holes 51.

[0039] Reference Figure 3 The outer wall of the dehydration tank 1 is provided with a disassembly opening 12. There are two disassembly openings 12. The two disassembly openings 12 are respectively provided at both ends of the width direction of the dehydration tank 1. The disassembly opening 12 is connected to the dehydration tank 11. The disassembly opening 12 is provided between the second dehydration plate 4 and the fixed plate 5. The disassembly opening 12 is used for allowing the sealing block 6 to slide into the dehydration tank 11. The limiting plate 7 is fixedly connected to the outer wall of the dehydration tank 1 by screws. There are two limiting plates 7. The limiting plates 7 are arranged in a one-to-one correspondence with the disassembly opening 12. The limiting plate 7 is used to cover the disassembly opening 12. The limiting plate 7 is provided with a strip opening 71. The strip opening 71 is connected to the disassembly opening 12. The length direction of the strip opening 71 is parallel to the length direction of the dehydration tank 1. The end of the sealing block 6 facing the limiting plate 7 is fixedly connected with a connecting column 62. The connecting column 62 is slidably connected to the inner wall of the strip opening 71. The two ends of the sealing block 6 are slidably connected to the limiting plate 7.

[0040] Reference Figure 1 and Figure 3 The upper end of the partition 8 is fixedly connected to the lower end of the fixed plate 5, and the lower end of the partition 8 is fixedly connected to the bottom of the dehydration trough 11. The length direction of the partition 8 is parallel to the length direction of the dehydration tank 1. There are two partitions 8, and the two partitions 8 are evenly spaced along the width direction of the dehydration tank 1. The fixed plate 5, the partition 8, the bottom of the dehydration trough 11 and the trough wall of the dehydration trough 11 divide the dehydration trough 11 below the fixed plate 5 into three exhaust cavities 13. The outer wall of the dehydration tank 1 is provided with an exhaust port 14, and there are three exhaust ports 14. The exhaust ports 14 are connected to the exhaust cavities 13 one-to-one. There are three vacuum pumps 9, and there are three vacuum pumps 9. The vacuum pumps 9 are arranged one-to-one with the exhaust ports 14, and the air inlet of the vacuum pump 9 is connected to the exhaust port 14.

[0041] The implementation principle of a wire dewatering device for papermaking in an embodiment of the present application is as follows: the sealing block 6 is moved according to the width of the paper web, the number of connected through-holes 61 is adjusted, the vacuum degree of each suction chamber 13 is adjusted according to the type of paper, and the moisture is discharged in sequence through the forming wire 2, the first dewatering port 31, the second dewatering port 41, the through-holes 61 and the through-hole 51, thereby improving the dewatering quality of the paper.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wire dewatering device for papermaking, characterized in that: The invention comprises a dewatering tank (1), a forming net (2), a first dewatering plate (3) and a second dewatering plate (4); the upper end of the dewatering tank (1) is provided with a dewatering tank (11); the forming net (2), the first dewatering plate (3) and the second dewatering plate (4) are fixedly connected to the tank wall of the dewatering tank (11) in sequence from top to bottom; the forming net (2) is used to cover the notch of the dewatering tank (11); the first dewatering plate (3) is provided with a plurality of first dewatering ports (31); the second dewatering plate (4) is provided with a plurality of second dewatering ports (41); the second dewatering ports (41) are connected to the first dewatering ports (31); and the diameter of the second dewatering ports (41) is larger than the diameter of the first dewatering ports (31).

2. A papermaking wire dewatering device according to claim 1, characterized in that: The materials of the first dehydration plate (3) and the second dehydration plate (4) are both set to ceramic.

3. A papermaking wire dewatering device according to claim 1, characterized in that: The distribution density of the plurality of first dehydration ports (31) on the first dehydration plate (3) is greater than the distribution density of the plurality of second dehydration ports (41) on the second dehydration plate (4), and one second dehydration port (41) is connected to the plurality of first water ports.

4. A papermaking wire dewatering device according to claim 1, characterized in that: An air extraction port (14) is provided on the outer wall of the dehydration tank (1), the height of the air extraction port (14) is less than the height of the second dehydration plate (4), and the air extraction port (14) is connected to the dehydration tank (11).

5. A papermaking wire dewatering device according to claim 4, characterized in that: The utility model further comprises a fixed plate (5) and a sealing block (6), wherein the fixed plate (5) is fixedly connected to the groove wall of the dehydration groove (11), the fixed plate (5) is arranged between the second dehydration plate (4) and the air extraction port (14), the fixed plate (5) is provided with a plurality of through-holes (51), and the through-holes (51) vertically penetrate the fixed plate (5), the sealing block (6) is slidably connected to the upper end of the fixed plate (5), and the sealing block (6) is used to control the opening and closing of the through-holes (51).

6. A papermaking wire dewatering device according to claim 5, characterized in that: A plurality of the sealing blocks (6) are provided, and the plurality of sealing blocks (6) are arranged along the length direction of the dehydration tank (1).

7. A papermaking wire dewatering device according to claim 6, characterized in that: The sealing block (6) is provided with a plurality of through-openings (61), the through-openings (61) vertically penetrating the sealing block (6), the through-openings (51) and the second dehydration openings (41) being arranged in a one-to-one correspondence, and the through-openings (61) and the through-openings (51) being arranged in a one-to-one correspondence.

8. The papermaking wire dewatering device according to claim 6, characterized in that: The outer wall of the dehydration tank (1) is provided with a disassembly opening (12), the disassembly opening (12) being connected to the dehydration tank (11), the disassembly opening (12) being provided between the second dehydration plate (4) and the fixed plate (5), and the disassembly opening (12) being used for allowing the sealing block (6) to slide into the dehydration tank (11).

9. A papermaking wire dewatering device according to claim 8, characterized in that: The dehydration tank (1) further comprises a limiting plate (7), wherein the limiting plate (7) is fixedly connected to the outer wall of the dehydration tank (1), and the limiting plate (7) is used to cover the disassembly opening (12). The limiting plate (7) is provided with a strip opening (71), and the strip opening (71) is connected to the disassembly opening (12). One end of the sealing block (6) facing the limiting plate (7) is fixedly connected to a connecting column (62), and the connecting column (62) is slidably connected to the inner wall of the strip opening (71).

10. The papermaking wire dewatering device according to claim 6, characterized in that: The utility model further comprises a partition (8), wherein the upper end of the partition (8) is fixedly connected to the lower end of the fixed plate (5), and the lower end of the partition (8) is fixedly connected to the bottom of the dewatering tank (11). The partition (8) is provided in plurality, and the plurality of partitions (8) are evenly spaced along the width direction of the dewatering tank (1). The fixed plate (5), the partition (8), the bottom of the dewatering tank (11), and the wall of the dewatering tank (11) together form a plurality of air extraction cavities (13). The plurality of air extraction ports (14) are provided in plurality, and the plurality of air extraction ports (14) are evenly spaced along the width direction of the dewatering tank (1). The number of the air extraction ports (14) is equal to the number of the air extraction cavities (13).

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