A twin roll press for a paper machine

Abstract

This utility model discloses a double-roller press device for a papermaking machine, comprising a housing. A first motor is fixedly connected to one side of the housing, and a discharge roller is fixedly connected to the output end of the first motor. A second motor is fixedly connected to the other side of the housing, and a collecting roller is fixedly connected to the output end of the second motor. An auxiliary roller is arranged on one side of the discharge roller, with the upper end of the first auxiliary roller tightly attached to the paper. A fifth auxiliary roller is arranged below the first auxiliary roller, and a first moving column is fixedly connected to both ends of the fifth auxiliary roller. A third fixed seat is movably fitted onto the outer surface of the first moving column. With the above structure, the paper is first initially pressed to remove some moisture and shape it, and then further compacted and dehydrated through a second pressing, effectively improving the paper's density and flatness, avoiding impurities from contaminating subsequent paper, and reducing downtime maintenance caused by untimely roller cleaning.

Description

Technical Field

[0001] This utility model relates to the field of paper machine pressing technology, and in particular to a double-roller pressing device for a paper machine. Background Technology

[0002] The double-roll press unit of a paper machine is a key dewatering device after paper forming. It consists of two sets of upper and lower pressure rolls. The wet paper web passes between the two rolls and is squeezed under pressure, squeezing out some of the water from the paper web. At the same time, it improves the dryness and density of the paper web. This device can effectively reduce the energy consumption of the subsequent drying process and improve the physical properties of the paper, such as smoothness. It is an important piece of equipment connecting the forming and drying processes.

[0003] Traditional equipment relies on manual operation to adjust parameters such as pressing gap and pressure, which has low precision and slow response. It is difficult to quickly adapt to the production needs of different types of paper. A lot of time is spent on debugging when changing production lines, which affects production efficiency. Some equipment even adopts a fixed parameter design, which cannot be flexibly adjusted and limits its applicability. For thick paper or paper with high fiber content, problems such as insufficient pressing and rough surface are likely to occur, affecting the quality of finished products. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a double-roller press device for papermaking machines. This solves the problem that traditional equipment often adopts a single-press design, which makes it difficult to fully remove moisture from the paper or achieve uniform compaction, resulting in insufficient paper density and uneven moisture distribution. Traditional equipment lacks an efficient design for removing impurities from the surface of the press rollers and relies heavily on manual cleaning at regular intervals. Impurities are easy to remain and adhere to the surface of subsequent paper, causing defects such as stains and holes in the paper. Frequent shutdowns for cleaning reduce production efficiency and increase labor costs.

[0005] This utility model also provides a paper machine double-roll press device as described above, including a housing, a first motor fixedly connected to one side of the housing, a discharge roller fixedly connected to the output end of the first motor, a second motor fixedly connected to the other side of the housing, and a collection roller fixedly connected to the output end of the second motor.

[0006] According to the present invention, a double-roller pressing device for a papermaking machine includes an auxiliary roller No. 1 on one side of the discharge roller, with the upper end of the auxiliary roller closely fitted to the paper. A fifth auxiliary roller is located below the first auxiliary roller. A moving column No. 1 is fixedly connected to both ends of the fifth auxiliary roller. A fixed seat No. 3 is movably fitted onto the outer surface of the moving column No. 1. A sleeve No. 1 is fixedly connected inside the fixed seat No. 3. A telescopic rod No. 1 is movably fitted inside the sleeve No. 1. The other side of the telescopic rod is fixedly connected to the moving column No. 1. A spring No. 1 is movably fitted onto the outer surface of the sleeve No. 1. The other side of the fixed seat No. 3 is fixedly connected to the housing.

[0007] According to the present invention, a double-roller pressing device for a papermaking machine includes a first fixed seat fixedly connected to the upper part of the housing, a limit rod slidably connected inside the first fixed seat, a limit ring fixedly connected to the upper end of the limit rod, a lifting plate fixedly connected to the lower end of the limit rod, an electric lifting column fixedly connected between the lifting plate and the first fixed seat, a third motor fixedly connected to one side of the lifting plate, a second drive roller fixedly connected to the output end of the third motor, and paper tightly fitted between one side of the second drive roller and the fifth auxiliary roller.

[0008] According to the present invention, a paper machine double-roll press device is provided, wherein a fixed plate is fixedly connected to the lower end of the lifting plate, a second scraper is fixedly connected to the upper end of the fixed plate, the upper end of the second scraper is tightly attached to the lower end of the second drive roller, a flexible hose is fixedly connected inside the fixed plate, and a collection box is provided at the lower end of the flexible hose.

[0009] According to the present invention, a double-roll press device for a papermaking machine is provided below the second active roller, and the lower end of the second auxiliary roller is tightly fitted with paper. The two ends of the box are fixedly connected to the box body.

[0010] According to the present invention, a double-roller pressing device for a papermaking machine includes a No. 3 auxiliary roller fixedly connected inside the housing. A No. 1 active roller is installed at the lower end of the No. 3 auxiliary roller. A No. 2 moving column is fixedly connected to both ends of the No. 1 active roller. A No. 4 motor is fixedly connected to one side of the No. 2 moving column. The output end of the No. 4 motor is fixedly connected to the No. 1 active roller. A No. 2 fixed seat is movably fitted on the outer surface of the No. 2 moving column. A No. 2 sleeve is fixedly connected inside the No. 2 fixed seat. A No. 2 telescopic rod is movably fitted inside the No. 2 sleeve. A No. 2 spring is movably fitted on the outer surface of the No. 2 sleeve. The other side of the No. 2 telescopic rod is fixedly connected to the No. 2 moving column. A No. 1 scraper is tightly attached to the lower end of the No. 1 active roller. A collection box is installed at the lower end of the other side of the No. 1 scraper. Paper is tightly attached between the No. 3 auxiliary roller and the No. 1 active roller.

[0011] According to the present invention, a double-roller pressing device for a papermaking machine is provided with a fourth auxiliary roller on the other side of the first active roller, the upper end of the fourth auxiliary roller is tightly fitted with paper, and a collecting roller is provided on one side of the fourth auxiliary roller.

[0012] According to the present invention, a double-roller press device for a papermaking machine has a base fixedly connected to the lower end of the housing.

[0013] Beneficial effects:

[0014] 1. The first pressing unit achieves precise adjustment of the pressing gap through an electric lifting structure, and the pressing parameters can be flexibly set according to the material, thickness and other characteristics of different papers. The second pressing unit, with the help of an elastic pressure adjustment structure, can adapt to the surface condition of the paper and ensure uniform and stable pressing pressure. The combination of the two allows the device to meet the diverse pressing needs of papers from thin to thick, improving the versatility of the equipment. The two pressing units work together. The paper is first initially pressed to remove some moisture and set its shape, and then further compacted and dehydrated through a second pressing, effectively improving the tightness and flatness of the paper.

[0015] 2. The scraper structure designed for the press cylinder can scrape off paper fibers, impurities, etc. adhering to the cylinder surface in real time, and centrally process them through a collection device to avoid residual impurities contaminating subsequent paper. At the same time, it reduces downtime maintenance caused by untimely cylinder cleaning and ensures continuous and stable production operation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a perspective view of a double-roll press device for a papermaking machine according to the present invention;

[0018] Figure 2 This is a cross-sectional view of a double-roll press device for a papermaking machine proposed in this utility model;

[0019] Figure 3 This is a perspective view of the No. 2 active roller of a double-roll press device for a paper machine according to the present invention.

[0020] Figure 4 The present utility model proposes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 5 The present utility model proposes Figure 2 Enlarged view of point B in the middle;

[0022] Figure 6 The present utility model proposes Figure 2 Enlarged view of point C in the middle.

[0023] Legend:

[0024] 1. Box body; 2. Discharge roller; 3. Auxiliary roller No. 1; 4. Motor No. 1; 5. Base; 6. Auxiliary roller No. 2; 7. Auxiliary roller No. 3; 8. Auxiliary roller No. 4; 9. Motor No. 2; 10. Collection roller; 11. Auxiliary roller No. 5; 12. Drive roller No. 1; 13. Scraper No. 1; 14. Collection box; 15. Lifting plate; 16. Limiting rod; 17. Fixed seat No. 1; 18. Motor No. 3; 19. Drive roller No. 2; 20. Electric lifting column; 21. Sleeve No. 1; 22. Spring No. 1; 23. Telescopic rod No. 1; 24. Moving column No. 1; 25. Scraper No. 2; 26. Hose; 27. Fixed plate; 28. Sleeve No. 2; 29. ​​Spring No. 2; 30. Moving column No. 2; 31. Telescopic rod No. 2; 32. Fixed seat No. 2; 33. Fixed seat No. 3; 34. Limiting ring; 35. Motor No. 4. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-6 This utility model provides a paper machine double-roller pressing device, which includes a housing 1. A first motor 4 is fixedly connected to one side of the housing 1, and a discharge roller 2 is fixedly connected to the output end of the first motor 4. A second motor 9 is fixedly connected to the other side of the housing 1, and a collection roller 10 is fixedly connected to the output end of the second motor 9.

[0027] Specifically, the housing 1 provides fixation and support for all components, the first motor 4 drives the discharge roller 2 to rotate, which is responsible for conveying the raw paper into the device, and the second motor 9 drives the collection roller 10 to rotate, which is responsible for winding up the pressed paper.

[0028] An auxiliary roller 3 is provided on one side of the discharge roller 2. The upper end of the auxiliary roller 3 is tightly attached to the paper. A fifth auxiliary roller 11 is provided below the auxiliary roller 3. A first moving column 24 is fixedly connected to both ends of the fifth auxiliary roller 11. A third fixed seat 33 is movably fitted on the outer surface of the first moving column 24. A first sleeve 21 is fixedly connected inside the third fixed seat 33. A first telescopic rod 23 is movably fitted inside the first sleeve 21. The other side of the first telescopic rod 23 is fixedly connected to the first moving column 24. A first spring 22 is movably fitted on the outer surface of the first sleeve 21. The other side of the third fixed seat 33 is fixedly connected to the box body 1.

[0029] Specifically, the No. 1 auxiliary roller 3 is in contact with the lower end of the paper to guide the paper from the discharge roller 2 to the subsequent processing structure and prevent the paper from shifting. The No. 5 auxiliary roller 11 is located at the lower end of the paper and forms an elastic support structure through the No. 1 moving column 24, the No. 3 fixed seat 33, the No. 1 sleeve 21, the No. 1 telescopic rod 23 and the No. 1 spring 22. The spring force is transmitted to the No. 5 auxiliary roller 11 through the telescopic rod, so that it always contacts the lower end of the paper. By using elasticity to adapt to changes in paper thickness, the paper is kept at the appropriate tension during the conveying process to prevent wrinkles or loosening.

[0030] Inside the box 1, a first fixed seat 17 is fixedly connected to the upper part. A limit rod 16 is slidably connected inside the first fixed seat 17. A limit ring 34 is fixedly connected to the upper end of the limit rod 16. A lifting plate 15 is fixedly connected to the lower end of the limit rod 16. An electric lifting column 20 is fixedly connected between the lifting plate 15 and the first fixed seat 17. A third motor 18 is fixedly connected to one side of the lifting plate 15. A second active roller 19 is fixedly connected to the output end of the third motor 18. Paper is tightly attached between one side of the second active roller 19 and the fifth auxiliary roller 11.

[0031] Specifically, the first fixed seat 17, the limiting rod 16, and the limiting ring 34 constitute a lifting guide structure to ensure the stable movement of the lifting plate 15. The electric lifting column 20 drives the lifting plate 15 to move up and down, adjusting the gap between the second active roller 19 and the lower fifth auxiliary roller 11. The third motor 18 drives the second active roller 19 to rotate, cooperating with the fifth auxiliary roller 11. By adjusting the gap size, the pressing pressure on the paper is changed, realizing the first pressing of the paper and adapting to the pressing needs of different papers.

[0032] A fixed plate 27 is fixedly connected to the lower end of the lifting plate 15, and a second scraper 25 is fixedly connected to the upper end of the fixed plate 27. The upper end of the second scraper 25 is tightly attached to the lower end of the second active roller 19. A hose 26 is fixedly connected inside the fixed plate 27, and a collection box 14 is provided at the lower end of the hose 26.

[0033] Specifically, the second scraper 25 can scrape off the pulp residue, moisture and impurities that adhere to the surface of the second drive roller 19 during pressing. The fixing plate 27 fixes the position of the scraper, and the scraped impurities are guided into the collection box 14 through the hose 26 to achieve centralized collection of impurities.

[0034] A second auxiliary roller 6 is located below the second active roller 19. Paper is tightly attached to the lower end of the second auxiliary roller 6. Both ends of the box body 1 are fixedly connected to the box body 1.

[0035] Specifically, the second auxiliary roller 6 provides support and guidance for the pressed paper, preventing it from sagging or shifting due to gravity.

[0036] A third auxiliary roller 7 is fixedly connected inside the housing 1. A first active roller 12 is set at the lower end of the third auxiliary roller 7. A second moving column 30 is fixedly connected to both ends of the first active roller 12. A fourth motor 35 is fixedly connected to one side of the second moving column 30. The output end of the fourth motor 35 is fixedly connected to the first active roller 12. A second fixed seat 32 is movably fitted on the outer surface of the second moving column 30. A second sleeve 28 is fixedly connected inside the second fixed seat 32. A second telescopic rod 31 is movably fitted inside the second sleeve 28. A second spring 29 is movably fitted on the outer surface of the second sleeve 28. The other side of the second telescopic rod 31 is fixedly connected to the second moving column 30. A first scraper 13 is tightly attached to the lower end of the first active roller 12. A collection box 14 is set at the lower end of the other side of the first scraper 13. Paper is tightly attached between the third auxiliary roller 7 and the first active roller 12.

[0037] Specifically, motor 35 drives the first active roller 12 to rotate, which works in conjunction with the fixed third auxiliary roller 7 above to perform secondary pressing on the paper. The second moving column 30, the second fixed seat 32, the second sleeve 28, the second telescopic rod 31, and the second spring 29 form an elastic adjustment structure. The spring force allows the first active roller 12 to be adjusted up and down slightly to adapt to fluctuations in paper thickness and maintain a stable pressing force. The first scraper 13 can scrape off impurities from the surface of the first active roller 12, which are collected in the collection box 14 to ensure the roller is clean.

[0038] On the other side of the No. 1 active roller 12, there is a No. 4 auxiliary roller 8. Paper is tightly attached to the upper end of the No. 4 auxiliary roller 8, and a collection roller 10 is provided on one side of the No. 4 auxiliary roller 8.

[0039] Specifically, the upper end of the fourth auxiliary roller 8 is attached to the paper and is located between the first active roller 12 and the collecting roller 10. It is used to correct the paper's direction and prevent the paper from shifting or wrinkling before entering the collecting roller 10.

[0040] The lower end of the housing 1 is fixedly connected to the base 5.

[0041] Specifically, base 5 can increase the contact area with the ground.

[0042] Working principle: The paper to be processed is conveyed into the housing 1 by the discharge roller 2 driven by motor 4. After being guided by auxiliary roller 3, it is initially tensioned by the cooperation of auxiliary roller 11 and auxiliary roller 3. Auxiliary roller 11 is an elastic structure composed of moving column 24, sleeve 21, telescopic rod 23 and spring 22, which adapts to changes in paper thickness to maintain a stable tension. The tensioned paper enters the first pressing unit. The lifting plate 15 driven by electric lifting column 20 drives the second active roller 19 driven by motor 18 to move up and down, adjusting the gap with the fifth auxiliary roller 11 below. The first pressing of the paper is achieved by the squeezing of the two rollers. At the same time, scraper 25 on fixed plate 27 is in close contact with the second active roller. 19. Scrape off the impurities adhering to its surface. The impurities fall into the collection box 14 through the hose 26. The paper after the first pressing is guided by the second auxiliary roller 6 and enters the second pressing unit. The first active roller 12 driven by the fourth motor 35 cooperates with the third auxiliary roller 7 fixed above. The pressure is adaptively adjusted by the elastic structure composed of the second moving column 30, the second sleeve 28, the second telescopic rod 31 and the second spring 29 to perform a second pressing on the paper. At the same time, the first scraper 13 scrapes off the impurities on the surface of the first active roller 12 and they fall into the collection box 14. The paper after the second pressing is guided by the fourth auxiliary roller 8 and finally wound up by the collection roller 10 driven by the second motor 9. Throughout the process, the base 5 at the lower end of the box 1 ensures the overall stability of the device and reduces the impact of vibration on the pressing accuracy.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A double-roll press device for a papermaking machine, comprising a housing (1), characterized in that: A first motor (4) is fixedly connected to one side of the box (1), and a discharge roller (2) is fixedly connected to the output end of the first motor (4). A second motor (9) is fixedly connected to the other side of the box (1), and a collection roller (10) is fixedly connected to the output end of the second motor (9).

2. The paper machine double-roll press device according to claim 1, characterized in that, A first auxiliary roller (3) is provided on one side of the discharge roller (2). The upper end of the first auxiliary roller (3) is tightly attached to the paper. A fifth auxiliary roller (11) is provided below the first auxiliary roller (3). A first moving column (24) is fixedly connected to both ends of the fifth auxiliary roller (11). A third fixed seat (33) is movably fitted on the outer surface of the first moving column (24). A first sleeve (21) is fixedly connected inside the third fixed seat (33). A first telescopic rod (23) is movably fitted inside the first sleeve (21). The other side of the first telescopic rod (23) is fixedly connected to the first moving column (24). A first spring (22) is movably fitted on the outer surface of the first sleeve (21). The other side of the third fixed seat (33) is fixedly connected to the box body (1).

3. The paper machine double-roll press device according to claim 1, characterized in that, A first fixed seat (17) is fixedly connected to the upper part of the box (1). A limit rod (16) is slidably connected inside the first fixed seat (17). A limit ring (34) is fixedly connected to the upper end of the limit rod (16). A lifting plate (15) is fixedly connected to the lower end of the limit rod (16). An electric lifting column (20) is fixedly connected between the lifting plate (15) and the first fixed seat (17). A third motor (18) is fixedly connected to one side of the lifting plate (15). A second active roller (19) is fixedly connected to the output end of the third motor (18). Paper is tightly attached between one side of the second active roller (19) and the fifth auxiliary roller (11).

4. The paper machine double-roll press device according to claim 3, characterized in that, The lower end of the lifting plate (15) is fixedly connected to a fixing plate (27), and the upper end of the fixing plate (27) is fixedly connected to a second scraper (25). The upper end of the second scraper (25) is tightly attached to the lower end of the second active roller (19). A hose (26) is fixedly connected inside the fixing plate (27), and a collection box (14) is provided at the lower end of the hose (26).

5. A paper machine double-roll press device according to claim 3, characterized in that, A second auxiliary roller (6) is provided below the second active roller (19), and the lower end of the second auxiliary roller (6) is tightly attached to the paper. The two ends of the box body (1) are fixedly connected to the box body (1).

6. The paper machine double-roll press device according to claim 1, characterized in that, The housing (1) is internally fixedly connected to a third auxiliary roller (7). A first active roller (12) is provided at the lower end of the third auxiliary roller (7). A second moving column (30) is fixedly connected to both ends of the first active roller (12). A fourth motor (35) is fixedly connected to one side of the second moving column (30). The output end of the fourth motor (35) is fixedly connected to the first active roller (12). A second fixed seat (32) is movably fitted onto the outer surface of the second moving column (30). The second fixed seat (32) is internally fixed. A second sleeve (28) is connected, and a second telescopic rod (31) is movably fitted inside the second sleeve (28). A second spring (29) is movably fitted outside the second sleeve (28). The other side of the second telescopic rod (31) is fixedly connected to a second moving column (30). The lower end of the first active roller (12) is tightly fitted with a first scraper (13). A collection box (14) is provided at the lower end of the other side of the first scraper (13). Paper is tightly fitted between the third auxiliary roller (7) and the first active roller (12).

7. A paper machine double-roll press device according to claim 6, characterized in that, A fourth auxiliary roller (8) is provided on the other side of the first active roller (12). Paper is tightly attached to the upper end of the fourth auxiliary roller (8), and a collecting roller (10) is provided on one side of the fourth auxiliary roller (8).

8. A paper machine double-roll press device according to claim 1, characterized in that, The lower end of the box (1) is fixedly connected to a base (5).

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