Scraper device for drying cylinder of paper machine

Abstract

The utility model belongs to the technical field of paper machine drying cylinder scrapers, and particularly relates to a paper machine drying cylinder scraper device. The clamping assembly is arranged in the first sliding groove; the fixed roller is arranged on the clamping assembly; the scraper is arranged on the clamping assembly; and the power assembly is arranged on the fixed bracket. The power assembly pushes the clamping assembly on the first sliding groove, the clamping assembly drives the scraper to make contact with the surface of the drying cylinder, the paper adheres to the drying cylinder, and the paper on the surface of the drying cylinder is scraped off. Friction between the scraper and the drying cylinder is reduced, and the effect of reducing loss is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper machine drying cylinder scraper, and particularly relates to a paper machine drying cylinder scraper device. Background Technology

[0002] General Status of Related Technologies in this Field: In the modern papermaking industry, continuous production equipment is widely used to improve production efficiency and product quality. As a crucial component, the dryer cylinder doctor blade device is responsible for removing residues adhering to the surface of the dryer cylinder, ensuring the smooth progress of the paper drying process. Traditional dryer cylinder doctor blades mostly adopt a fixed structure, using a simple metal blade to achieve the scraping function. While this design is inexpensive, it reveals many problems in actual use, such as rapid blade wear, frequent replacement leading to high maintenance costs, and poor cleaning effect due to inflexible fixed angles. 2) Specific Solutions from Existing Technologies: Currently, there are two main types of dryer cylinder doctor blade devices on the market: one is a manually adjustable doctor blade, where operators can adjust the angle of the doctor blade according to the actual situation, but this method is not only labor-intensive but also difficult to control precisely; the other is an automatically adjustable doctor blade, usually equipped with sensors and actuators, which can dynamically adjust the doctor blade position according to the condition of the dryer cylinder surface, but this device has a complex structure, is expensive, and has a relatively high failure rate. Both methods have their advantages and limitations. Manual adjustment, while meeting certain needs, is inefficient; while automatic adjustment can improve efficiency, its high cost makes it unsuitable for all situations. 3) Defects of existing technology: In summary, the common problems with existing drying cylinder scraper devices are: ① Manually adjustable scrapers cannot adapt to changes in the drying cylinder surface in real time, resulting in unstable cleaning effects; ② Automatically adjustable scrapers require large initial investments and incur high maintenance costs; ③ Regardless of the type, prolonged operation will lead to severe wear and tear, reducing work efficiency, increasing downtime for maintenance, and thus affecting the normal operation of the entire production line. The constant contact between the scraper and the drying cylinder generates friction, increasing scraper wear. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a paper machine drying cylinder scraper device that reduces friction between the scraper and the drying cylinder, thereby reducing wear and tear.

[0004] In view of this, the present invention provides a paper machine drying cylinder scraper device comprising: a fixed bracket, wherein a first sliding groove is provided on the fixed bracket; a clamping assembly, wherein the clamping assembly is disposed in the first sliding groove; a fixed roller, wherein the fixed roller is disposed on the clamping assembly; a scraper, wherein the scraper is disposed on the clamping assembly; and a power assembly, wherein the power assembly is disposed on the fixed bracket.

[0005] In this technical solution, the power component pushes the clamping component on the first slide groove. The clamping component causes the doctor blade to contact the surface of the drying cylinder. Since the paper adheres to the drying cylinder, the paper is scraped off the surface of the drying cylinder. Reducing the friction between the doctor blade and the drying cylinder achieves the effect of reducing wear.

[0006] In the above technical solution, the clamping assembly further includes a fixing plate, a fixing roller is rotatably mounted on the fixing plate, a scraper is coaxially fixed on the fixing roller, a first mounting shaft is coaxially fixed to the fixing roller through the fixing plate, and the other end of the first mounting shaft is sleeved on a buffer unit, the buffer unit buffering the scraper.

[0007] In this technical solution, when the doctor blade contacts the drying cylinder, it drives the fixed roller to rotate on the fixed plate. When the drying cylinder rotates, the doctor blade comes into contact with the paper, causing wear and tear. The buffer unit makes a soft contact with the doctor blade to prevent paper jamming when the doctor blade scrapes the paper.

[0008] In the above technical solution, a first mounting ring is provided at one end of the first mounting shaft, and a second mounting ring is provided at the other end. The first mounting ring is perpendicular to the second mounting ring, and the first mounting ring is sleeved on the fixed roller.

[0009] In the above technical solution, the buffer unit further includes a first fixed post, which is fixed on a fixed plate. A third mounting ring is sleeved on the first fixed post. A movable rod is fixedly mounted on the third mounting ring. A first spring and a second mounting ring are sleeved on the movable rod. One end of the first spring is connected to the top of the movable rod, and the other end is connected to the second mounting ring. A first slot is provided on the first fixed post, and a first pin is movably mounted in the first slot.

[0010] In this technical solution, the scraper contacts the drying cylinder and rotates, driving the first mounting shaft to rotate via a fixed roller. The first mounting shaft is connected to one end of a first spring, which compresses the first spring, thus buffering the scraper.

[0011] In the above technical solution, the power component further includes a pneumatic telescopic column, which is fixedly mounted on a first mounting plate. The first mounting plate is fixedly mounted on a fixed bracket. The output end of the pneumatic telescopic column is fixedly mounted on a second mounting plate. The second mounting plate is fixedly mounted on one side of a guard plate. The guard plate is slidably mounted in a first groove.

[0012] In this technical solution, the pneumatic telescopic column extends to push the guard plate to move along the first slide groove, causing the doctor blade to contact the drying cylinder. The pneumatic telescopic column retracts to push the guard plate to move along the first slide groove, causing the doctor blade to retract. After the drying cylinder dries the paper, the pneumatic telescopic column drives the doctor blade to contact the cylinder. Once there is no paper on the drying cylinder, the pneumatic telescopic column drives the doctor blade to retract, avoiding wear and tear caused by contact between the drying cylinder and the doctor blade.

[0013] In the above technical solution, a further step is to provide an anti-curling unit between the two guard plates. The anti-curling unit includes a first transport roller, which is rotatably disposed between the guard plates and is disposed alternately between the guard plates.

[0014] In this technical solution, when the paper is scraped off the drying cylinder by the doctor blade, it curls up. The first roller pulls the paper up and down to make it flatter.

[0015] In the above technical solution, it further includes a paper pressing assembly. The power assembly includes a second transport roller, which is rotatably disposed between the guard plates. The second transport roller is disposed above the first transport roller and close to the second mounting plate. One end of the second transport roller passes through the guard plate and is coaxially connected to the output end of the first motor. The first motor is fixedly disposed on the second mounting plate.

[0016] In this technical solution, the first motor drives the second transport roller to rotate inside the guard plate. The first and second transport rollers work together to squeeze the paper, which not only flattens the paper but also provides power for paper transport.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting a buffer unit, the scraper contacts the drying cylinder and rotates. The fixed roller drives the first mounting shaft to rotate. The first mounting shaft is connected to one end of the first spring, which compresses the first spring. The first spring buffers the scraper.

[0019] 2. By setting up a paper pressing component, not only is the paper flattened, but the paper transport is also powered. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure.

[0023] The markings in the diagram are as follows:

[0024] 1. Fixed bracket; 2. Protective plate; 3. First mounting plate; 4. Pneumatic telescopic column; 5. Second mounting plate; 6. First slide groove; 7. First motor; 8. Drying cylinder; 9. Scraper; 10. Fixed plate; 11. Fixed roller; 12. Mounting shaft; 13. First mounting ring; 14. Second mounting ring; 15. First fixed column; 16. Third mounting ring; 17. First pin; 18. First slot; 19. Movable rod; 20. First spring; 21. First transport roller; 22. Second transport roller. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0029] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0030] Example 1:

[0031] This embodiment provides a paper machine drying cylinder scraper device, such as... Figure 1 As shown, the assembly includes: a fixed bracket 1 with a first sliding groove 6; a clamping assembly disposed in the first sliding groove 6; a fixed roller 11 disposed on the clamping assembly; a scraper 9 disposed on the clamping assembly; and a power assembly disposed on the fixed bracket 1. The power assembly pushes the clamping assembly on the first sliding groove 6, causing the scraper 9 to contact the surface of the drying cylinder 8. Since the paper adheres to the drying cylinder 8, the scraper removes the paper from the surface of the drying cylinder 8. Reducing friction between the scraper 9 and the drying cylinder 8 reduces wear and tear.

[0032] like Figure 1As shown, the clamping assembly includes a fixed plate 10, on which a fixed roller 11 is rotatably mounted. A doctor blade 9 is coaxially fixed on the fixed roller 11. A first mounting shaft 12 is coaxially fixed to the fixed roller 11, extending out of the fixed plate 10. The other end of the first mounting shaft 12 is sleeved on a buffer unit, which buffers the doctor blade 9. When the doctor blade contacts the drying cylinder 8, it drives the fixed roller 11 to rotate on the fixed plate 10. As the drying cylinder 8 rotates, the doctor blade 9 comes into contact with the paper, causing wear and tear. The buffer unit provides a soft contact with the doctor blade 9 to prevent paper jamming during the doctor blade's scraping action.

[0033] like Figure 2 As shown, a first mounting ring 13 is provided at one end of the first mounting shaft 12, and a second mounting ring 14 is provided at the other end. The first mounting ring 13 is perpendicular to the second mounting ring 14. The first mounting ring is sleeved on the fixed roller 11.

[0034] like Figure 2 As shown, the buffer unit includes a first fixed post 15, which is fixed to the fixed plate 10. A third mounting ring 16 is sleeved on the first fixed post 15, and a movable rod 19 is fixedly mounted on the third mounting ring 16. A first spring 20 and a second mounting ring 14 are sleeved on the movable rod 19. One end of the first spring 20 is connected to the top of the movable rod 19, and the other end is connected to the second mounting ring 14. A first slot 18 is provided on the first fixed post 15, and a first pin 17 is movably mounted in the first slot 18. The scraper 9 contacts the drying cylinder 8 and rotates, driving the first mounting shaft 12 to rotate via the fixed roller 11. One end of the first mounting shaft 12 is connected to the first spring 20, which compresses the first spring 20, thus providing a buffering effect for the scraper 9.

[0035] like Figure 1 As shown, the power assembly includes a pneumatic telescopic column 4, which is fixedly mounted on a first mounting plate 3, which is fixedly mounted on a fixed bracket 1. The output end of the pneumatic telescopic column 4 is fixedly mounted on a second mounting plate 5, which is fixedly mounted on one side of a guard plate 2. The guard plate 2 is slidably disposed within a first sliding groove 6. When the pneumatic telescopic column 4 extends, it pushes the guard plate 2 to move along the first sliding groove 6, causing the doctor blade 9 to contact the drying cylinder 8. When the pneumatic telescopic column 4 retracts, it pushes the guard plate 2 to move along the first sliding groove 6, causing the doctor blade 9 to retract. After the drying cylinder 8 dries the paper, the pneumatic telescopic column 4 drives the doctor blade 9 to contact it. After there is no paper on the drying cylinder 8, the pneumatic telescopic column 4 drives the doctor blade 9 to retract, avoiding contact between the drying cylinder 8 and the doctor blade 9 and causing wear.

[0036] like Figure 3As shown, an anti-curling unit is provided between the two guard plates 2. The anti-curling unit includes a first transport roller 21, which is rotatably disposed between the guard plates 2 and is staggered vertically between the guard plates 2. When the paper is scraped off the drying cylinder 8 by the doctor blade 9, it curls. The first roller pulls the paper up and down to make it flatter.

[0037] like Figure 1-3 As shown, it also includes a paper pressing assembly. The power assembly includes a second transport roller 22, which is rotatably disposed between the guard plates 2. The second transport roller 22 is positioned above the first transport roller 21, close to the second mounting plate 5. One end of the second transport roller 22 extends out of the guard plate 2 and is coaxially connected to the output end of the first motor 7. The first motor 7 is fixedly mounted on the second mounting plate 5. The first motor 7 drives the second transport roller 22 to rotate within the guard plates 2. The first transport roller 21 and the second transport roller 22 work together to press the paper, not only flattening the paper but also providing power for paper transport.

[0038] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A scraper (9) device for a paper machine drying cylinder (8), characterized in that... ,include: A fixed bracket (1) is provided with a first sliding groove (6); A clamping assembly disposed in the first slide groove (6); A fixed roller (11) is disposed on the clamping assembly; A scraper (9) is disposed on the clamping assembly; A power assembly is mounted on a fixed bracket (1).

2. The paper machine drying cylinder (8) scraper (9) device according to claim 1, characterized in that, The clamping assembly includes a fixing plate (10), a fixing roller (11) is rotatably mounted on the fixing plate (10), a scraper (9) is coaxially fixed on the fixing roller (11), a first mounting shaft (12) is coaxially fixed through the fixing plate (10) on the fixing roller (11), and the other end of the first mounting shaft (12) is sleeved on a buffer unit, which buffers the scraper (9).

3. The paper machine drying cylinder (8) scraper (9) device according to claim 2, characterized in that, The first mounting shaft (12) has a first mounting ring (13) at one end and a second mounting ring (14) at the other end. The first mounting ring (13) is perpendicular to the second mounting ring (14). The first mounting ring is sleeved on the fixed roller (11).

4. The paper machine drying cylinder (8) scraper (9) device according to claim 2, characterized in that, The buffer unit includes a first fixed post (15), which is fixed on a fixed plate (10). A third mounting ring (16) is sleeved on the first fixed post (15). A movable rod (19) is fixedly mounted on the third mounting ring (16). A first spring (20) and a second mounting ring (14) are sleeved on the movable rod (19). One end of the first spring (20) is connected to the top of the movable rod (19), and the other end is connected to the second mounting ring (14). A first slot (18) is provided on the first fixed post (15), and a first pin (17) is movably mounted in the first slot (18).

5. The paper machine drying cylinder (8) scraper (9) device according to claim 1, characterized in that, The power assembly includes a pneumatic telescopic column (4), which is fixedly mounted on a first mounting plate (3). The first mounting plate (3) is fixedly mounted on a fixed bracket. The output end of the pneumatic telescopic column (4) is fixedly mounted on a second mounting plate (5). The second mounting plate (5) is fixedly mounted on one side of a guard plate (2). The guard plate (2) is slidably mounted in a first sliding groove (6).

6. The paper machine drying cylinder (8) scraper (9) device according to claim 5, characterized in that, An anti-curling unit is provided between the two guard plates (2). The anti-curling unit includes a first transport roller (21). The first transport roller (21) is rotatably disposed between the guard plates (2). The first transport roller (21) is disposed vertically between the guard plates (2).

7. The paper machine drying cylinder (8) scraper (9) device according to claim 1, characterized in that, It also includes a paper pressing assembly. The power assembly includes a second transport roller (22), which is rotatably disposed between the guard plates (2). The second transport roller is disposed above the first transport roller (21) and close to the second mounting plate (5). One end of the second transport roller (22) extends out of the guard plate (2) and is coaxially connected to the output end of the first motor (7). The first motor (7) is fixedly disposed on the second mounting plate (5).

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