A paper machine dandy

Abstract

The utility model discloses a paper machine shakes and shakes the equipment, including first fixed base, the left side mounting of first fixed base has the removal adjusting block, the left side mounting of removal adjusting block has the second fixed base, the top fixed mounting of removal adjusting block has second shaker and two second struts, the movable mounting of second breast roll between two second struts, the output fixed mounting of second shaker has second spring plate, the inside of removal adjusting block is equipped with first limit auxiliary rod and adjusting screw rod, and the both ends of adjusting screw rod are installed first connecting bearing. The utility model discloses through the new second shaker and the matching second breast roll of a root, improves paper industry evenness, alleviates the pulp flocculation of low basis weight paper, improves the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the evenness of the eveness

Description

Technical Field

[0001] This utility model relates to the field of papermaking machinery technology, specifically to a paper machine vibration device. Background Technology

[0002] In papermaking, the uniformity of paper sheet formation is one of the core factors determining its physical properties (such as burst strength and tensile strength) and finished product quality. For paper machines using bottom wire formers, when producing low basis weight paper, the fibers at the bottom of the wire section are prone to flocculation, forming clumps that are difficult to disperse, resulting in significant uneven basis weight distribution across the paper. This unevenness not only directly causes fluctuations in physical properties such as burst strength, but also seriously restricts the production efficiency and quality of subsequent processes such as rewinding and coating. To improve this situation, the industry generally installs a shaking device at the headbox breast roll position. The high-frequency micro-amplitude axial vibration of the breast roll generates a shearing effect on the pulp, thereby breaking up fiber flocculation and improving fiber distribution.

[0003] Traditional single-point vibration has limited range and energy, and the resulting vibration intensity and duration are insufficient to meet the continuous disturbance requirements of the fiber network under high-speed production. Especially when processing low-basis-weight paper sheets or easily flocculated specialty pulps, a single, short-lived vibration cannot completely suppress the tendency of fibers to re-flocculate, leading to a bottleneck in uniformity improvement. This not only directly causes uneven physical properties such as basis weight and burst strength in the finished paper, but also presents insurmountable obstacles to achieving higher quality goals or further increasing machine speed. Therefore, we propose a paper machine vibration device. Utility Model Content

[0004] The purpose of this invention is to provide a paper machine vibration device to address the limitations of traditional single-point vibration in the background art, which has limited range and energy, and whose vibration intensity and duration are insufficient to meet the continuous disturbance requirements of the fiber network under high-speed production. Especially when processing low-basis-weight paper sheets or easily flocculated specialty pulps, a single, short-lived vibration cannot completely suppress the tendency of fiber re-flocculation, leading to a bottleneck in uniformity improvement. This not only directly causes uneven physical properties such as basis weight and burst strength in the finished paper, but also presents insurmountable obstacles to achieving higher quality goals or further increasing machine speed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a paper machine shaking device, comprising:

[0006] A first fixed base is provided, a movable adjusting block is installed on the left side of the first fixed base, a second fixed base is installed on the left side of the movable adjusting block, a second vibrator and two second support columns are fixedly installed above the movable adjusting block, a second breast roller is movably installed between the two second support columns, a second spring plate is fixedly installed at the output end of the second vibrator, a first limiting auxiliary rod and an adjusting screw are passed through the interior of the movable adjusting block, and first connecting bearings are installed at both ends of the adjusting screw. A first vibrator and two first support columns are fixedly installed above the first fixed base, a first breast roller is movably installed between the two first support columns, and a first spring plate is fixedly installed at the output end of the first vibrator.

[0007] In a preferred embodiment of the paper machine vibration device of this utility model, the adjusting screw is threadedly connected to the movable adjusting block, one end of the adjusting screw is movably connected to the second fixed base through the first connecting bearing, and the other end of the adjusting screw is movably connected to the first fixed base through the first connecting bearing.

[0008] In a preferred embodiment of the paper machine shaking device of this utility model, one end of the first limiting auxiliary rod is fixedly connected to the first fixed base, and the other end of the first limiting auxiliary rod is fixedly connected to the second fixed base. The movable adjusting block moves on the first limiting auxiliary rod through the adjusting screw.

[0009] As a preferred embodiment of the paper machine vibration device of this utility model, the first support column is further provided with:

[0010] The movable cavity is located inside the first support column. A movable bearing seat is movably installed inside the movable cavity. Second limiting auxiliary rods are provided on both sides of the movable bearing seat. A second connecting bearing is installed in the middle of the movable bearing seat.

[0011] In a preferred embodiment of the paper machine shaking device of this utility model, the movable bearing seat moves up and down along the second limiting auxiliary rod, and the movable bearing seat is movably connected to the first breast roll through the second connecting bearing.

[0012] In a preferred embodiment of the paper machine shaking device of this utility model, the first spring plate is movably connected to the movable bearing seat.

[0013] Compared with the prior art, the present invention provides a paper machine shaking device, which has the following beneficial effects:

[0014] 1. This utility model improves the uniformity of paper production by adding a second vibrator and a matching second breast roll, reduces the flocculation of pulp in low basis weight paper, and improves the uneven basis weight distribution and uneven physical properties such as burst strength caused by poor uniformity. It can maintain uniformity and reduce the longitudinal and transverse tensile ratio when the machine speed increases.

[0015] 2. This invention precisely and linearly adjusts the distance between the second and first breast rollers by rotating the adjusting screw to drive the moving adjusting block and the integrated second breast roller to move as a whole. This design allows the equipment to quickly lock the distance between the two rollers to the optimal working range for different paper types, basis weights, and machine speeds, ensuring the optimal dispersion effect of vibration energy on the pulp fibers and fundamentally solving the problem of poor process adaptability of fixed-distance devices. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. First fixed base; 2. First vibrator; 3. First limiting auxiliary rod; 4. Moving adjustment block; 5. Second vibrator; 6. Adjusting screw; 7. Second fixed base; 8. First connecting bearing; 9. Second spring plate; 10. Second breast roller; 11. Second support column; 12. First breast roller; 13. Second connecting bearing; 14. Movable cavity; 15. Moving bearing seat; 16. First spring plate; 17. Second limiting auxiliary rod; 18. First support column. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-2A paper machine vibrating device includes a first fixed base 1, a movable adjusting block 4 installed on the left side of the first fixed base 1, a second fixed base 7 installed on the left side of the movable adjusting block 4, a second vibrator 5 and two second support columns 11 fixedly installed above the movable adjusting block 4, a second breast roller 10 movably installed between the two second support columns 11, a second spring plate 9 fixedly installed at the output end of the second vibrator 5, a first limiting auxiliary rod 3 and an adjusting screw 6 passing through the interior of the movable adjusting block 4, a first connecting bearing 8 installed at both ends of the adjusting screw 6, a first vibrator 2 and two first support columns 18 fixedly installed above the first fixed base 1, a first breast roller 12 movably installed between the two first support columns 18, and a first spring plate 16 fixedly installed at the output end of the first vibrator 2.

[0021] In this implementation plan, by adding a second vibrator 5 and a matching second breast roll 10, the paper uniformity is improved, reducing pulp flocculation in low basis weight paper and improving the uneven basis weight distribution and uneven physical properties such as burst strength caused by poor uniformity. Even with increased machine speed, uniformity can be maintained and the longitudinal and transverse tensile ratios reduced. Simultaneously, by rotating the adjusting screw 6, the moving adjusting block 4 and the integrated second breast roll 10 are moved horizontally, thereby precisely and linearly adjusting the distance between the second breast roll 10 and the first breast roll 12. This design allows the equipment to quickly lock the double-roller distance to the optimal working range for different paper types, basis weights, and machine speeds, ensuring the optimal dispersion effect of vibration energy on the pulp fibers and fundamentally solving the problem of poor process adaptability of fixed-gap devices.

[0022] Furthermore:

[0023] In an optional embodiment, the adjusting screw 6 is threadedly connected to the movable adjusting block 4, one end of the adjusting screw 6 is movably connected to the second fixed base 7 through the first connecting bearing 8, and the other end of the adjusting screw 6 is movably connected to the first fixed base 1 through the first connecting bearing 8.

[0024] In this implementation scheme: This design constructs a stable, precise, and labor-saving transmission mechanism by threading the adjusting screw 6 to the movable adjusting block 4 and supporting both ends of the screw on the first fixed base 1 and the second fixed base 7 via the first connecting bearing 8. The screw drive can accurately convert rotary motion into linear displacement, achieving precise control of the distance between the two breast rollers.

[0025] Furthermore:

[0026] In an optional embodiment, one end of the first limiting auxiliary rod 3 is fixedly connected to the first fixed base 1, and the other end of the first limiting auxiliary rod 3 is fixedly connected to the second fixed base 7. The movable adjusting block 4 moves on the first limiting auxiliary rod 3 through the adjusting screw 6.

[0027] In this implementation scheme: This design constructs a rigid guide rail for the movable adjustment block 4 by fixing the two ends of the first limiting auxiliary rod 3 to the first fixed base 1 and the second fixed base 7 respectively. This ensures that the movable adjustment block 4 performs a strict, non-deflection linear movement under the drive of the adjusting screw 6, effectively preventing it from getting stuck or tilting during the movement.

[0028] Furthermore:

[0029] In an optional embodiment, the first pillar 18 is further provided with:

[0030] The movable cavity 14 is located inside the first support column 18. A movable bearing seat 15 is movably installed inside the movable cavity 14. Second limiting auxiliary rods 17 are provided on both sides of the movable bearing seat 15. A second connecting bearing 13 is installed in the middle of the movable bearing seat 15.

[0031] In this implementation scheme: This design creates a controlled floating space for the core vibration component by opening a movable cavity 14 inside the first support column 18 and setting a movable bearing seat 15 that can move along the second limiting auxiliary rod 17. It cleverly resolves the contradiction between high-frequency vibration transmission and mechanical structure constraints. The second connecting bearing 13 efficiently transmits vibration to the breast roller, while the slight floating of the movable bearing seat 15 in the movable cavity 14 effectively absorbs vibration energy and avoids rigid impact with the fixed structure.

[0032] Furthermore:

[0033] In an optional embodiment, the movable bearing seat 15 moves up and down along the second limiting auxiliary rod 17, and the movable bearing seat 15 is movably connected to the first breast roller 12 through the second connecting bearing 13.

[0034] In this implementation scheme: This design constitutes the core floating mechanism for vibration transmission, which allows the vibration of the first rocker 2 to drive the movable bearing seat 15 through the first spring plate 16, and to be efficiently converted into the axial high-frequency vibration of the first breast roller 12 with the help of the second connecting bearing 13; at the same time, the movable bearing seat 15 can make precise vertical micro-movements along the second limiting auxiliary rod 17.

[0035] Furthermore:

[0036] In an optional embodiment, the first spring plate 16 is movably connected to the movable bearing housing 15.

[0037] In this implementation scheme: This design forms an efficient and reliable vibration transmission hub by setting the first spring plate 16 and the movable bearing seat 15 as a movable connection. This movable connection method perfectly adapts to the multi-dimensional micro-motion generated by the movable bearing seat 15 during vibration, ensuring that the vibration energy can be transmitted to the first breast roller 12 with minimal loss and always in the correct direction.

[0038] Working Principle: When using this paper machine vibrating device, the operator can rotate the adjusting screw 6 to optimize the vibration effect based on the type of paper, basis weight, or machine speed. The rotational motion of the adjusting screw 6 is converted into precise and stable linear motion of the moving adjusting block 4 along the first limit auxiliary rod 3 through threaded engagement. This drives the second vibrator 5, the second support column 11, and the second breast roll 10, which are fixed on it, to move synchronously as a whole, ultimately achieving stepless adjustment and precise locking of the distance between the second breast roll 10 and the first breast roll 12. During production, the first vibrator 2 and the second vibrator 5 start synchronously, transmitting high-frequency, low-amplitude mechanical vibration to the first breast roll 12 and the second breast roll 10 through the first spring plate 16 and the second spring plate 9, respectively. At this time, the pulp flowing through the forming wire above the breast rolls will be successively subjected to the action of these two vibrating breast rolls at the optimal distance. The first breast roll 12 performs initial shearing and dispersion of the bottom layer pulp, breaking up most of the fiber flocculation. Immediately afterwards, the pulp that has not yet fully reflocculated enters the vibration zone of the second breast roll 10, where it undergoes a second, synergistic homogenization and combing. This "series-type" vibration treatment process greatly enhances the dispersion effect on the fiber network, ultimately effectively improving the basis weight distribution and uniformity of the finished paper. The connection method between the second breast roll 10 and the second support 11 is the same as that between the first breast roll 12 and the first support 18. This is the working principle of the paper machine's vibration device.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paper machine vibrating device, characterized in that, include: A first fixed base (1) is provided, a movable adjustment block (4) is installed on the left side of the first fixed base (1), a second fixed base (7) is installed on the left side of the movable adjustment block (4), a second vibrator (5) and two second pillars (11) are fixedly installed above the movable adjustment block (4), a second breast roller (10) is movably installed between the two second pillars (11), a second spring plate (9) is fixedly installed at the output end of the second vibrator (5), a first limiting auxiliary rod (3) and an adjusting screw (6) are provided inside the movable adjustment block (4), a first connecting bearing (8) is installed at both ends of the adjusting screw (6), a first vibrator (2) and two first pillars (18) are fixedly installed above the first fixed base (1), a first breast roller (12) is movably installed between the two first pillars (18), and a first spring plate (16) is fixedly installed at the output end of the first vibrator (2).

2. The paper machine vibrating device according to claim 1, characterized in that, The adjusting screw (6) is threadedly connected to the movable adjusting block (4). One end of the adjusting screw (6) is movably connected to the second fixed base (7) through the first connecting bearing (8), and the other end of the adjusting screw (6) is movably connected to the first fixed base (1) through the first connecting bearing (8).

3. The paper machine vibrating device according to claim 1, characterized in that, One end of the first limiting auxiliary rod (3) is fixedly connected to the first fixed base (1), and the other end of the first limiting auxiliary rod (3) is fixedly connected to the second fixed base (7). The moving adjustment block (4) moves on the first limiting auxiliary rod (3) through the adjusting screw (6).

4. The paper machine vibrating device according to claim 1, characterized in that, The first pillar (18) is also provided with: The movable cavity (14) is located inside the first support column (18). A movable bearing seat (15) is movably installed inside the movable cavity (14). A second limiting auxiliary rod (17) is provided on both sides inside the movable bearing seat (15). A second connecting bearing (13) is installed in the middle of the movable bearing seat (15).

5. A paper machine vibrating device according to claim 4, characterized in that, The movable bearing seat (15) moves up and down along the second limiting auxiliary rod (17), and the movable bearing seat (15) is movably connected to the first breast roller (12) through the second connecting bearing (13).

6. A paper machine vibrating device according to claim 4, characterized in that, The first spring plate (16) is movably connected to the movable bearing seat (15).

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