Anti-fracture paper machine compression roller structure
By introducing a buffer frame, inclined plate, and spring design into the pressure roll of the paper machine, the pressure roll is buffered and protected, solving the problem of easy breakage of the pressure roll and improving the service life and production efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-03
AI Technical Summary
The pressure rollers of existing paper machines lack a buffer mechanism, which makes them prone to breakage when encountering debris, thus affecting their efficiency.
A paper machine pressure roller structure designed to prevent breakage is proposed. The structure utilizes the combination of a buffer frame, inclined plate, spring, and ring plate to achieve buffering through spring compression. The central shaft passes through the ring plate and rests between the inclined plates for further buffering. The design of the threaded column and threaded sleeve facilitates the replacement of damaged ring plates.
It effectively prevents the pressure roller from breaking when encountering heavy objects, improves papermaking efficiency, simplifies the replacement process of the ring plate, and reduces equipment maintenance time.
Smart Images
Figure CN224077850U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of paper machine pressure rollers, specifically a structure for preventing breakage of paper machine pressure rollers. Background Technology
[0002] During the operation of a paper machine, rollers are often used. The function of the press section of the paper machine is to dewater the wet paper sheet. The press rollers of the paper machine are the main components of the press device. They are mainly used to squeeze the pulp on the felt and squeeze out the water from the pulp to facilitate the dewatering of the paper and improve the efficiency of papermaking.
[0003] However, some existing paper machine pressure rollers lack cushioning mechanisms. When debris presses onto the roller, it may break, causing damage, affecting its usability, and slowing down papermaking efficiency. To address this issue, we offer a break-resistant paper machine pressure roller structure. Utility Model Content
[0004] 1) Technical problems to be solved
[0005] This invention proposes a fracture-resistant paper machine pressure roller structure. Through the cooperation of the buffer frame, inclined plate, spring and ring plate, when the pressure roller is squeezed by a heavy object, the central shaft passes through the ring plate and falls between the two inclined plates. The spring is compressed, thus buffering the pressure roller. This solves the problem that some existing paper machine pressure rollers basically do not have a buffer mechanism. When the pressure roller is pressed by foreign objects, it may be crushed, causing damage and affecting the use of the pressure roller.
[0006] (ii) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a paper machine pressure roller structure with anti-breakage, including a pressure roller body, a vertical plate provided at one end of the pressure roller body, a drive shaft rotatably connected inside the vertical plate, a circular plate fixedly connected at one end of the drive shaft, a central shaft installed at one end of the circular plate, and the outer surface of the central shaft fixedly connected to the outer surface of the pressure roller body.
[0008] A buffer frame is bolted to the outer surface of the circular plate, and a telescopic rod is fixedly connected to the outer surface of the buffer frame. One end of the telescopic rod is fixedly connected to an inclined plate, and a spring is sleeved on the outside of the telescopic rod. One end of the spring is fixedly connected to the outer surface of the buffer frame, and the other end of the spring is fixedly connected to the outer surface of the inclined plate.
[0009] Furthermore, a threaded post is fixedly connected to the outer surface of the circular plate, and a threaded sleeve is threadedly connected to the outer surface of the threaded post.
[0010] Furthermore, an annular plate is fixedly connected to the outer surface of the threaded sleeve, and the outer surface of the annular plate is slidably connected to the outer surface of the central shaft.
[0011] Furthermore, a limiting plate is fixedly connected to the outer surface of the ring plate, a limiting groove is formed on the outer surface of the central shaft, and the outer surface of the limiting plate is slidably connected to the inner wall of the limiting groove.
[0012] Furthermore, a curved plate is fixedly connected to the outer surface of the buffer frame, and a sponge pad is fixedly connected to the inside of the curved plate.
[0013] Furthermore, a sleeve is slidably connected to the outer surface of the circular plate, and the outer surface of the sleeve is fixedly connected to the outer surface of the vertical plate.
[0014] Furthermore, a buffer strip is fixedly connected to the outer surface of the inclined plate, and the buffer strip is evenly distributed on the outer surface of the inclined plate.
[0015] (iii) Beneficial effects:
[0016] Compared with existing technologies, this anti-breakage paper machine pressure roll structure has the following advantages:
[0017] I. This anti-breakage paper machine pressure roller structure, through the cooperation of the buffer frame, inclined plate, spring and ring plate, when the pressure roller is squeezed by a heavy object, the central shaft passes through the ring plate and falls between the two inclined plates. The spring is compressed, so that the pressure roller is buffered. This solves the problem that some existing paper machine pressure rollers basically do not have a buffer mechanism. When the pressure roller is pressed by foreign objects, it may be crushed, causing damage, affecting the use of the pressure roller and slowing down the papermaking efficiency.
[0018] II. The anti-breakage paper machine pressure roller structure, through the cooperation between the threaded column, threaded sleeve, ring plate and central shaft, when the pressure roller is squeezed by a heavy object, the central shaft will penetrate through the ring plate and break the ring plate. When reinstalling, a new threaded sleeve and ring plate need to be replaced. The new threaded sleeve is rotated and screwed into the outer surface of the threaded column, and then the central shaft is installed inside the ring plate to complete the replacement. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a partial structural schematic diagram of the present invention;
[0022] Figure 3 This is a partial exploded view of the structure of this utility model;
[0023] Figure 4 This is an exploded view showing the positional relationship between the circular plate and the sleeve of this utility model;
[0024] Figure 5 For the present utility model Figure 2 Enlarged view of the structure of section A in the middle.
[0025] In the diagram: 1. Pressure roller body; 2. Vertical plate; 3. Drive shaft; 4. Circular plate; 5. Central shaft; 6. Buffer frame; 7. Telescopic rod; 8. Inclined plate; 9. Spring; 10. Threaded column; 11. Threaded sleeve; 12. Ring plate; 13. Limiting plate; 14. Limiting groove; 15. Bending plate; 16. Sponge pad; 17. Sleeve; 18. Buffer strip. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0027] like Figure 1-5 As shown, this utility model provides a technical solution: a paper machine pressure roller structure with anti-breakage, including a pressure roller body 1. The pressure roller body 1 adopts a ceramic-metal composite roller core. The ceramic layer provides wear resistance, and the metal core enhances the compressive strength. The roller body is subjected to nitriding or high-frequency quenching treatment to improve surface hardness and fatigue strength. The roller surface is sprayed with tungsten carbide composite material to enhance wear resistance and thermal stability. A vertical plate 2 is provided at one end of the pressure roller body 1.
[0028] The vertical plate 2 is internally connected to a drive shaft 3. The servo motor is connected to the drive shaft 3 via a synchronous pulley. The tension of the belt is adjusted by the tensioning wheel to ensure stable power transmission. One end of the drive shaft 3 is fixedly connected to a circular plate 4. A threaded post 10 is fixedly connected to the outer surface of the circular plate 4. A threaded sleeve 11 is threadedly connected to the outer surface of the threaded post 10. The drive shaft 3 drives the circular plate 4 to rotate, and the circular plate 4 drives the threaded sleeve 11 to rotate via the threaded post 10.
[0029] A ring plate 12 is fixedly connected to the outer surface of the threaded sleeve 11. The outer surface of the ring plate 12 is slidably connected to the outer surface of the central shaft 5. The threaded sleeve 11 facilitates the installation of the ring plate 12. Under normal operation, the central shaft 5 is located inside the ring plate 12 and will not squeeze or deform the ring plate 12. Only when the pressure roller body 1 is squeezed by a heavy object, the huge impact force will drive the central shaft 5 out of the ring plate 12 and destroy the ring plate 12.
[0030] A limiting plate 13 is fixedly connected to the outer surface of the ring plate 12, and a limiting groove 14 is opened on the outer surface of the central shaft 5. The outer surface of the limiting plate 13 is slidably connected to the inner wall of the limiting groove 14. The limiting plate 13 can be stuck inside the limiting groove 14, so that the ring plate 12 drives the central shaft 5 to rotate, thereby driving the pressure roller body 1 to rotate. The central shaft 5 is installed at one end of the circular plate 4.
[0031] A sleeve 17 is slidably connected to the outer surface of the circular plate 4. The outer surface of the sleeve 17 is fixedly connected to the outer surface of the vertical plate 2. There are two circular plates 4 in total. One end of one of the circular plates 4 is provided with a column, which slides inside the sleeve 17 to support the circular plate 4. The outer surface of the central shaft 5 is fixedly connected to the outer surface of the pressure roller body 1.
[0032] The outer surface of the circular plate 4 is bolted with a buffer frame 6. There are four buffer frames 6 in total, arranged in pairs and symmetrically distributed. The outer surface of the buffer frame 6 is fixedly connected with a curved plate 15. The inside of the curved plate 15 is fixedly connected with a sponge pad 16. When the pressure roller body 1 encounters an impact from above, it passes through two sets of inclined plates 8 for buffering. The two central shafts 5 fall into the sponge pad 16 above the curved plate 15. This process will not damage the pressure roller body 1 and the central shafts 5, but will only damage the ring plate 12 which is easy to replace.
[0033] A telescopic rod 7 is fixedly connected to the outer surface of the buffer frame 6. An inclined plate 8 is fixedly connected to one end of the telescopic rod 7. A buffer strip 18 is fixedly connected to the outer surface of the inclined plate 8. The buffer strip 18 is evenly distributed on the outer surface of the inclined plate 8. The buffer strip 18 contacts the outer surface of the pressure roller body 1, which can both buffer the central shaft 5 and prevent scratches on the central shaft 5.
[0034] A spring 9 is sleeved on the outside of the telescopic rod 7. The telescopic rod 7 can keep the spring 9 in a horizontal state. The telescopic rod 7 can only shorten under the compression of external force and extend under the pulling of external force. One end of the spring 9 is fixedly connected to the outer surface of the buffer frame 6, and the other end of the spring 9 is fixedly connected to the outer surface of the inclined plate 8.
[0035] Working principle: During use, when the pressure roller body 1 is squeezed by a heavy object, the central shaft 5 passes through the ring plate 12, breaking the ring plate 12. The central shaft 5 falls between the two inclined plates 8. At this time, the spring 9 is compressed and the telescopic rod 7 is shortened, so that the two central shafts 5 are buffered. Finally, the two central shafts 5 fall into the sponge pad 16 above the curved plate 15 to prevent the pressure roller body 1 from falling and breaking. When reinstalling, a new threaded sleeve 11 and ring plate 12 need to be replaced. The new threaded sleeve 11 is rotated and screwed into the outer surface of the threaded post 10, and then the central shaft 5 is installed inside the ring plate 12, so that the limiting plate 13 is locked inside the limiting groove 14. The replacement is then completed.
[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., 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 utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.
[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A break-proof structure of a press roll of a paper machine, comprising a press roll body (1), characterized in that: One end of the compression roller body (1) is provided with a vertical plate (2), the inside of the vertical plate (2) is rotatably connected with a transmission shaft (3), one end of the transmission shaft (3) is fixedly connected with a circular plate (4), one end of the circular plate (4) is installed with a center shaft (5), the outer surface of the center shaft (5) is fixedly connected with the outer surface of the compression roller body (1). The outer surface of the circular plate (4) is bolted with a buffer bracket (6), the outer surface of the buffer bracket (6) is fixedly connected with a telescopic rod (7), one end of the telescopic rod (7) is fixedly connected with an inclined plate (8), the outside of the telescopic rod (7) is sleeved with a spring (9), one end of the spring (9) is fixedly connected with the outer surface of the buffer bracket (6), the other end of the spring (9) is fixedly connected with the outer surface of the inclined plate (8).
2. A break resistant paper machine roll structure as claimed in claim 1, characterized in that The outer surface of the circular plate (4) is fixedly connected with a threaded column (10), the outer surface of the threaded column (10) is threadedly connected with a threaded sleeve (11).
3. A break resistant paper machine roll structure as claimed in claim 2, characterized in that: The outer surface of the threaded sleeve (11) is fixedly connected with a ring plate (12), the outer surface of the ring plate (12) is slidably connected with the outer surface of the center shaft (5).
4. A break resistant paper machine roll structure as claimed in claim 3, characterized in that: The outer surface of the ring plate (12) is fixedly connected with a limiting plate (13), the outer surface of the center shaft (5) is provided with a limiting groove (14), the outer surface of the limiting plate (13) is slidably connected with the inner wall of the limiting groove (14).
5. A break resistant paper machine roll structure as defined in claim 1, wherein: The outer surface of the buffer bracket (6) is fixedly connected with a bent plate (15), the inside of the bent plate (15) is fixedly connected with a sponge pad (16).
6. A break resistant paper machine roll structure as claimed in claim 1, wherein: The outer surface of the circular plate (4) is slidably connected with a sleeve (17), the outer surface of the sleeve (17) is fixedly connected with the outer surface of the vertical plate (2).
7. A break resistant paper machine roll structure as defined in claim 1, wherein: The outer surface of the inclined plate (8) is fixedly connected with a buffer strip (18), the buffer strip (18) is evenly distributed on the outer surface of the inclined plate (8).