A papermaking vacuum roll

Abstract

The utility model discloses a kind of papermaking vacuum rollers, it is related to vacuum roller field, including vacuum roller main body, two internal thread rings are symmetrically installed in vacuum roller main body, two detachable outer shell are symmetrically installed in vacuum roller main body simultaneously, detachable outer shell is installed in vacuum roller main body by internal thread ring, by setting internal thread ring and detachable outer shell on vacuum roller main body, since the aperture of second adsorption hole on detachable outer shell is slightly smaller than the aperture of first adsorption hole on vacuum roller main body, therefore, blockage is often blocked in the second adsorption hole on detachable outer shell, when second adsorption hole is seriously blocked, internal thread ring can be rotated using tool, so that internal thread ring no longer blocks detachable outer shell, so that detachable outer shell is detached from vacuum roller main body and cleaned, and then entire vacuum roller main body does not need to be detached from production equipment, greatly reduce the time and manpower cost required for disassembly, simplify operation process.

Description

Technical Field

[0001] This utility model relates to the field of vacuum rollers, and in particular to a papermaking vacuum roller. Background Technology

[0002] In the papermaking industry, vacuum rollers are a key piece of equipment in the papermaking process. They are primarily used for adsorption, dehydration, and transfer of paper. The vacuum environment inside the roller, combined with perforations on its surface, achieves stable adsorption of the paper, ensuring smooth paper flow and successful dehydration during production. This significantly impacts paper quality and production efficiency. However, over long-term use, fibers, fillers, and other impurities from the papermaking raw materials accumulate during production, easily clogging the perforations on the vacuum roller surface. Clogging not only reduces the vacuum adsorption effect, affecting paper dehydration efficiency and quality, but can also lead to unstable equipment operation due to uneven local pressure.

[0003] When the pores of a vacuum roller become severely clogged, the traditional approach is to disassemble the entire vacuum roller from the production equipment and then perform deep cleaning using equipment such as an ultrasonic cleaner. However, this method has significant drawbacks: firstly, the structure of the entire vacuum roller is complex and closely connected to the equipment, making disassembly time-consuming and labor-intensive, and extremely cumbersome; secondly, the entire process of disassembly, cleaning, and reinstallation is lengthy, leading to increased production downtime and severely impacting the overall efficiency of vacuum roller pore cleaning, thereby adversely affecting the continuous and stable operation of the papermaking production line. Therefore, this application proposes a papermaking vacuum roller to solve the above problems. Utility Model Content

[0004] The main objective of this invention is to provide a papermaking vacuum roller that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A papermaking vacuum roll includes a vacuum roll body, two internally threaded rings symmetrically installed inside the vacuum roll body, and two detachable external housings symmetrically installed inside the vacuum roll body. The detachable external housings are installed inside the vacuum roll body through the internally threaded rings. Each detachable external housing is composed of a semi-annular plate and an arc-shaped limiting plate. There are two arc-shaped limiting plates, which are symmetrically fixed at both ends of the semi-annular plate.

[0007] Preferably, a first mounting groove is provided on the outer wall of the vacuum roller body, and two internal thread grooves are symmetrically provided on the outer wall of the vacuum roller body. The internal thread grooves are connected to the first mounting groove. Two second mounting grooves are symmetrically provided on the inner wall of the internal thread grooves. The second mounting grooves are connected to the first mounting grooves.

[0008] Preferably, the vacuum roller body has a plurality of first adsorption holes, and the plurality of first adsorption holes are all connected to the first mounting groove.

[0009] Preferably, the internal threaded ring is threadedly installed in an internal threaded groove on the outer wall of the vacuum roller body, and the outer wall of the internal threaded ring is provided with a plurality of rotating insertion holes in a ring shape.

[0010] Preferably, the semi-annular plate on the detachable outer housing is installed in a first mounting groove on the outer wall of the vacuum roller body, and the arc-shaped limiting insert is installed in a second mounting groove on the inner wall of the internal thread groove.

[0011] Preferably, the semi-annular plate on the detachable outer shell has a plurality of second adsorption holes, and the plurality of second adsorption holes penetrate through the inside and outside of the semi-annular plate. The plurality of second adsorption holes are coaxial with the plurality of first adsorption holes opened on the vacuum roller body, and the diameter of the second adsorption holes is slightly smaller than the diameter of the first adsorption holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By incorporating an internal threaded ring and a detachable outer shell on the vacuum roller body, and because the diameter of the second adsorption hole on the detachable outer shell is slightly smaller than that of the first adsorption hole on the vacuum roller body, blockages often accumulate in the second adsorption hole. When the second adsorption hole is severely blocked, the internal threaded ring can be rotated with a tool to remove it from the vacuum roller body for cleaning, eliminating the need to remove the entire vacuum roller body from the production equipment. This significantly reduces the time and labor costs required for disassembly and simplifies the operation process. Furthermore, cleaning the detachable outer shell separately allows for more targeted treatment of blockages, resulting in a more thorough cleaning and reducing production downtime caused by cleaning. This ensures the continuous and stable operation of the paper production line, improving production efficiency and paper forming quality. Additionally, the structural design of the detachable outer shell, combined with the fixing method of the internal threaded ring, ensures stability after installation and facilitates subsequent maintenance and replacement, extending the overall service life of the vacuum roller body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the vacuum roller body of this utility model;

[0016] Figure 3 This is a schematic diagram of the detachable outer shell of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal threaded ring of this utility model.

[0018] In the figure: 1. Vacuum roller body; 2. Internal threaded ring; 3. Detachable outer shell; 4. First mounting groove; 5. Internal threaded groove; 6. Second mounting groove; 7. First suction hole; 8. Rotary insertion hole; 9. Semi-annular plate; 10. Arc-shaped limiting plate; 11. Second suction hole. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Please see Figure 1 - Figure 4 As shown, a papermaking vacuum roller includes a vacuum roller body 1. Two internally threaded rings 2 are symmetrically installed inside the vacuum roller body 1. Two detachable outer shells 3 are also symmetrically installed inside the vacuum roller body 1. The detachable outer shells 3 are installed inside the vacuum roller body 1 via the internally threaded rings 2. Each detachable outer shell 3 consists of a semi-annular plate 9 and an arc-shaped limiting plate 10. There are two arc-shaped limiting plates 10, symmetrically fixed at both ends of the semi-annular plate 9. By setting the internally threaded rings 2 and the detachable outer shells 3 on the vacuum roller body 1, since the diameter of the second adsorption hole 11 on the detachable outer shell 3 is slightly smaller than the diameter of the first adsorption hole 7 on the vacuum roller body 1, blockages often accumulate in the second adsorption hole 11 on the detachable outer shell 3. When the second adsorption hole 11 is severely blocked, a tool can be used to rotate it. The internal threaded ring 2 prevents it from obstructing the removable outer shell 3, allowing it to be detached from the vacuum roller body 1 for cleaning without having to remove the entire vacuum roller body 1 from the production equipment. This significantly reduces the time and labor costs required for disassembly and simplifies the operation process. Furthermore, cleaning the removable outer shell 3 separately allows for more targeted treatment of blockages, resulting in a more thorough cleaning and reducing production interruptions caused by cleaning. This ensures the continuous and stable operation of the paper production line, improving production efficiency and paper forming quality. In addition, the structural design of the removable outer shell 3, combined with the fixing method of the internal threaded ring 2, ensures stability after installation and facilitates subsequent maintenance and replacement, extending the overall service life of the vacuum roller body 1.

[0021] Specifically, a first mounting groove 4 is provided on the outer wall of the vacuum roller body 1. Two internal thread grooves 5 are symmetrically provided on the outer wall of the vacuum roller body 1. The internal thread grooves 5 are connected to the first mounting groove 4. Two second mounting grooves 6 are symmetrically provided on the inner wall of the internal thread grooves 5. The second mounting grooves 6 are connected to the first mounting groove 4. A number of first adsorption holes 7 are provided on the vacuum roller body 1. All of the number of first adsorption holes 7 are connected to the first mounting groove 4.

[0022] Specifically, the internal threaded ring 2 is threadedly installed in the internal threaded groove 5 on the outer wall of the vacuum roller body 1. The outer wall of the internal threaded ring 2 has several rotating insertion holes 8 in a ring shape. The semi-annular plate 9 on the detachable outer shell 3 is installed in the first mounting groove 4 on the outer wall of the vacuum roller body 1. The arc-shaped limiting plate 10 is installed in the second mounting groove 6 on the inner wall of the internal threaded groove 5. The semi-annular plate 9 on the detachable outer shell 3 has several second adsorption holes 11, and the several second adsorption holes 11 all penetrate the semi-annular plate 9 inside and out. The several second adsorption holes 11 are coaxial with the several first adsorption holes 7 on the vacuum roller body 1. The diameter of the second adsorption holes 11 is slightly smaller than the diameter of the first adsorption holes 7. This difference in diameter makes it easier for fibers, fillers and other blockages to be intercepted in the second adsorption holes 11 during the operation of the vacuum roller body 1, reducing the situation where blockages enter the first adsorption holes 7. At the same time, the coaxial arrangement of the two ensures that the airflow can smoothly enter the first adsorption holes 7 from the second adsorption holes 11, ensuring the normal realization of the vacuum adsorption function.

[0023] When the vacuum roller body 1 is in operation, the vacuum system connected to the vacuum roller body 1 operates, creating a vacuum environment inside the vacuum roller body 1. External air, carrying paper fibers, etc., enters the vacuum roller body 1 through the second adsorption hole 11 on the detachable outer shell 3 and the first adsorption hole 7 on the vacuum roller body 1. The pressure difference is used to adsorb, dehydrate, and transfer the paper. Because the diameter of the second adsorption hole 11 is slightly smaller than that of the first adsorption hole 7, during the adsorption process, more fibers, fillers, and other blockages are intercepted in the second adsorption hole 11, thus reducing the amount of blockages entering the first adsorption hole 7. When it is necessary to clean the second adsorption hole 11, first insert a rod-shaped tool into the rotating insertion hole 8 on the internal threaded ring 2, and then... The internal threaded ring 2 is rotated to move outward along the internal threaded groove 5 until it no longer obstructs the arc-shaped limiting plate 10. Then, the detachable outer housing 3 is removed from the first mounting groove 4 and the second mounting groove 6. Next, the second suction hole 11 on the removed detachable outer housing 3 is cleaned. After cleaning, the semi-annular plate 9 of the detachable outer housing 3 is placed into the first mounting groove 4, and the arc-shaped limiting plate 10 is inserted into the second mounting groove 6. Then, the internal threaded ring 2 is rotated in the opposite direction to move inward along the internal threaded groove 5 until the internal threaded ring 2 contacts the end of the semi-annular plate 9. At this time, the internal threaded ring 2 will block the arc-shaped limiting plate 10 to the outside, thus completing the installation of the detachable outer housing 3.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A papermaking vacuum roll, comprising a vacuum roll body (1), characterized in that: Two internal threaded rings (2) are symmetrically installed inside the vacuum roller body (1). Two detachable external housings (3) are also symmetrically installed inside the vacuum roller body (1). The detachable external housings (3) are installed inside the vacuum roller body (1) through the internal threaded rings (2). The detachable external housings (3) are composed of a semi-annular plate (9) and an arc-shaped limiting plate (10). There are two arc-shaped limiting plates (10) which are symmetrically fixed at both ends of the semi-annular plate (9).

2. A papermaking vacuum roller according to claim 1, characterized in that: The outer wall of the vacuum roller body (1) is provided with a first mounting groove (4), and two internal thread grooves (5) are symmetrically provided on the outer wall of the vacuum roller body (1). The internal thread grooves (5) are connected to the first mounting groove (4). Two second mounting grooves (6) are symmetrically provided on the inner wall of the internal thread grooves (5). The second mounting grooves (6) are connected to the first mounting grooves (4).

3. A papermaking vacuum roller according to claim 2, characterized in that: The vacuum roller body (1) has several first adsorption holes (7), and all of the several first adsorption holes (7) are connected to the first mounting groove (4).

4. A papermaking vacuum roller according to claim 3, characterized in that: The internal threaded ring (2) is threadedly installed in the internal threaded groove (5) on the outer wall of the vacuum roller body (1), and the outer wall of the internal threaded ring (2) is provided with a number of rotating insertion holes (8) in a ring shape.

5. A papermaking vacuum roller according to claim 4, characterized in that: The semi-annular plate (9) on the detachable outer shell (3) is installed in the first mounting groove (4) opened on the outer wall of the vacuum roller body (1), and the arc-shaped limiting insert (10) is installed in the second mounting groove (6) opened on the inner wall of the internal thread groove (5).

6. A papermaking vacuum roller according to claim 5, characterized in that: The detachable outer shell (3) has a number of second adsorption holes (11) on the semi-annular plate (9), and the number of second adsorption holes (11) penetrate the inside and outside of the semi-annular plate (9). The number of second adsorption holes (11) are coaxial with the number of first adsorption holes (7) on the vacuum roller body (1). The diameter of the second adsorption hole (11) is slightly smaller than the diameter of the first adsorption hole (7).

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