Net part shaking device for improving uniformity of paper sheets

Abstract

The utility model discloses a net part shaking device for improving paper sheet evenness, which comprises a net table, an outer frame is arranged outside the net table, a plurality of buffer springs are arranged between the outer wall of the net table and the outer frame, two asymmetric sides of the net table are respectively connected with a first connecting frame and a second connecting frame, and the first connecting frame penetrates through the outer wall of the corresponding side of the outer frame and is connected with the outer wall of the outer frame in a sliding mode. According to the net part shaking and vibrating device for improving the uniformity of the paper sheets, the uniform vibrating structures are uniformly distributed below the net table, so that a multi-point vibrating effect can be generated on the net table. The vibration points act on the paper pulp fibers on the net table, so that the paper pulp fibers are more uniformly distributed, and the overall quality of the paper is further improved. Through the multi-point vibration technology, the shaking and vibrating device not only improves the uniformity of paper sheets, but also enhances the longitudinal and transverse strength ratio of the paper sheets, and improves the surface quality of finished paper.

Description

Technical Field

[0001] This utility model relates to the technical field of wire mesh vibration equipment, specifically a wire mesh vibration device for improving paper sheet uniformity. Background Technology

[0002] With continuous technological advancements, the paper industry has achieved breakthroughs in paper properties, manufacturing methods, and raw material structures. These innovations have led to the widespread application of specialty paper—a highly targeted and specialized paper product—in multiple fields, resulting in sustained growth in market demand. Compared to ordinary consumer paper, specialty paper is a niche product with limited applications, distinguished by its diverse varieties, small batch sizes, and high added value.

[0003] The raw material formulation of specialty papers is showing a trend towards diversification. Besides traditional plant fibers, it may now include non-plant fibers such as chemical fibers, carbon fibers, and metal fibers to compensate for the shortcomings of traditional papermaking fiber raw materials and improve the performance of the finished paper. When dealing with chemical fibers or other non-plant fibers containing longer fibers, the industry generally adopts a low-concentration, high-flow-rate forming process to obtain better wire forming conditions, with the wire density typically controlled between 0.02% and 0.08%. Furthermore, to ensure the removal of a large amount of water at high flow rates, the industry usually selects a long-wire paper machine to meet this requirement. However, traditional long-wire paper machines are suitable for high-concentration, low-flow-rate forming. When encountering pulp containing chemical fibers, the fibers tend to clump together, affecting the formation of the paper sheet.

[0004] The limited production batches of specialty paper often necessitate the production of different varieties and properties of specialty paper on the same fourdrinier paper machine. Therefore, adapting ordinary fourdrinier paper machines to the performance requirements of various raw materials and meeting the small-batch production needs of specialty paper has become a pressing issue for the industry. The vibrating device in a fourdrinier paper machine, as a crucial component, vibrates the wire section to ensure uniform distribution of pulp fibers and enhances the orientation of longitudinal and transverse pulp fibers. This significantly optimizes paper uniformity, longitudinal and transverse strength ratios, and surface quality. Traditional vibrating devices primarily achieve uniform distribution by vibrating the breast rolls. However, with increased paper machine speeds and the application of new fiber materials, traditional vibrating devices can no longer meet diverse usage requirements. Most common vibrating devices vibrate the entire wire frame rather than multiple points, limiting the effectiveness of uniformly distributing pulp fibers.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing mesh vibration device. Utility Model Content

[0006] This utility model addresses the problem that existing technical solutions are too simplistic by providing a significantly different solution for improving paper sheet uniformity through a wire shaking device, thus resolving the issues mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wire mesh vibration device for improving paper sheet uniformity, comprising a wire mesh, an outer frame outside the wire mesh, and a plurality of buffer springs between the outer wall of the wire mesh and the outer frame. A first connecting frame and a second connecting frame are respectively connected to the asymmetrical sides of the wire mesh, and the first connecting frame slides through the corresponding side of the outer wall of the outer frame, and the second connecting frame slides through the corresponding side of the outer wall of the outer frame. The first connecting frame and the second connecting frame are connected to a driving structure, and a vibration equalization structure is provided at the bottom of the wire mesh to make the pulp and fibers vibrate evenly.

[0008] Both the first connecting frame and the second connecting frame are configured as "U" shaped structures, and the sides of both the first connecting frame and the second connecting frame are configured as curved surfaces.

[0009] The drive structure includes an eccentric wheel, a drive shaft, a full gear, a trigger disc, a connecting shaft, and a drive motor. The eccentric wheel is attached to the side of the first connecting frame, and the drive shaft is connected to the eccentric wheel. The full gear is connected to the drive shaft, and the trigger disc is meshed with the side of the full gear. The connecting shaft is connected to the trigger disc, and the connecting shaft is rotatably connected to the outer wall of the outer frame. The end face of the trigger disc contacts the second connecting frame. The drive shaft is connected to the drive motor.

[0010] The trigger disk has toothed blocks at equal angles on its side for meshing with the full gear, and the trigger disk has an inclined protrusion on the end face near the outer frame for pressing the second connecting frame.

[0011] The vibration balancing structure includes concave plates, support rods, and ball bearings. Several concave plates are installed at equal intervals at the bottom of the mesh, and each concave plate contains a ball bearing. At least three support rods for limiting the ball bearings are connected at equal angles to the opening area of ​​each concave plate.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: This wire mesh vibration device for improving paper sheet uniformity, through the coordinated work of the outer frame, buffer spring, first connecting frame, second connecting frame, and drive structure, can achieve transverse and longitudinal vibration of the wire mesh. This bidirectional vibration effectively promotes the uniform distribution of pulp and fiber during the forming process, thereby significantly improving paper uniformity and reducing the problem of paper sheet uniformity being affected by fiber flocculation.

[0013] Furthermore, the vibration-uniform structure design allows the wire mesh to transfer the inertial energy of shaking to the ball bearings at the bottom under the shaking action of the drive structure. With precise positioning by the concave plate and support rod, the ball bearings reciprocate, striking both ends of the concave plate and generating vibration. This vibration is then transmitted to the wire mesh, and because the vibration-uniform structure is evenly distributed below the wire mesh, it produces a multi-point vibration effect. These vibration points act on the pulp fibers on the wire mesh, promoting a more uniform distribution and further improving the overall quality of the paper. Through this multi-point vibration technology, our shaking device not only improves the uniformity of the paper sheet but also enhances the ratio of longitudinal to transverse strength, improving the surface quality of the finished paper. Attached Figure Description

[0014] Figure 1 This is a top view of the structure of this utility model;

[0015] Figure 2 This is a side view sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the vibration uniformity structure of this utility model.

[0017] In the diagram: 1. Wire mesh; 2. Outer frame; 3. Buffer spring; 4. First connecting frame; 5. Second connecting frame; 6. Drive structure; 601. Eccentric wheel; 602. Drive shaft; 603. Full gear; 604. Trigger plate; 605. Connecting shaft; 606. Drive motor; 7. Vibration averaging structure; 701. Concave plate; 702. Support rod; 703. Ball bearing. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-3This utility model provides a technical solution: a wire mesh vibration device for improving paper sheet uniformity, comprising a wire mesh 1, an outer frame 2, buffer springs 3, a first connecting frame 4, a second connecting frame 5, a drive structure 6, an eccentric wheel 601, a drive shaft 602, a full gear 603, a trigger disc 604, a connecting shaft 605, a drive motor 606, a vibration equalization structure 7, a concave plate 701, a support rod 702, and ball bearings 703. The wire mesh 1 is provided with an outer frame 2, and a plurality of buffer springs 3 are provided between the outer wall of the wire mesh 1 and the outer frame 2. The first connecting frame 4 and the second connecting frame 5 are respectively connected to the asymmetrical sides of the wire mesh 1. The first connecting frame 4 slides through the corresponding outer wall of the outer frame 2, and the second connecting frame 5 slides through the corresponding outer wall of the outer frame 2. The first connecting frame 4 and the second connecting frame 5 are connected to the drive structure 6. The bottom of the wire mesh 1 is provided with a vibration equalization structure 7 to make the pulp and fibers vibrate evenly.

[0020] Both the first connecting frame 4 and the second connecting frame 5 are configured as "U" shaped structures, and the sides of both the first connecting frame 4 and the second connecting frame 5 are configured as curved surfaces.

[0021] The drive structure 6 includes an eccentric wheel 601, a drive shaft 602, a full gear 603, a trigger disc 604, a connecting shaft 605, and a drive motor 606. The eccentric wheel 601 is attached to the side of the first connecting frame 4, and the drive shaft 602 is connected to the eccentric wheel 601. The full gear 603 is connected to the drive shaft 602, and the trigger disc 604 is meshed with the side of the full gear 603. The connecting shaft 605 is connected to the trigger disc 604, and the connecting shaft 605 is rotatably connected to the outer wall of the outer frame 2. The end face of the trigger disc 604 contacts the second connecting frame 5, and the drive motor 606 is connected to the drive shaft 602.

[0022] The trigger disk 604 has toothed blocks at equal angles on its side for meshing with the full gear 603, and the trigger disk 604 has an inclined protrusion on the end face near the outer frame 2 for pressing the second connecting frame 5.

[0023] The vibration equalization structure 7 includes a concave plate 701, a support rod 702, and a ball bearing 703. Several concave plates 701 are installed at equal intervals at the bottom of the mesh 1, and each concave plate 701 is provided with a ball bearing 703. At least three support rods 702 for limiting the ball bearing 703 are connected at equal angles to the opening area of ​​each concave plate 701.

[0024] Working principle: According to Figure 1As shown, the pulp is first poured into the wire mesh 1, the drive motor 606 is started, and the drive shaft 602 is rotated. The gear 603 on the drive shaft 602 drives the trigger disk 604 to rotate. The rotation of the trigger disk 604 periodically presses the second connecting frame 5 on its inclined protruding area, so that the second connecting frame 5 pushes the wire mesh 1 to shake longitudinally within the outer frame 2. Meanwhile, the eccentric wheel 601, driven by the drive shaft 602, periodically presses the first connecting frame 4 to push the wire mesh 1 to shake laterally within the outer frame 2. With the assistance of the buffer spring 3, the irregular shaking in the horizontal and vertical directions is achieved.

[0025] Furthermore, the vibration equalization structure 7 allows the wire mesh 1 to act on the ball bearings 703 during vibration, causing the ball bearings 703 to repeatedly strike both ends of the concave plate 701 within the concave plate 701 and the support rod 702. The resulting vibration acts on the wire mesh 1, enabling multi-point vibration on the wire mesh 1 and making the pulp fibers more uniform. This is the working principle of the wire mesh vibration device for improving paper sheet uniformity.

[0026] 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 wire shaking device for improving paper sheet uniformity, comprising a wire (1), characterized in that: The wire mesh (1) is provided with an outer frame (2), and a number of buffer springs (3) are provided between the outer wall of the wire mesh (1) and the outer frame (2). The wire mesh (1) is connected to a first connecting frame (4) and a second connecting frame (5) on its asymmetrical sides. The first connecting frame (4) slides through the outer wall of the corresponding side of the outer frame (2), and the second connecting frame (5) slides through the outer wall of the corresponding side of the outer frame (2). The first connecting frame (4) and the second connecting frame (5) are connected to a driving structure (6). The bottom of the wire mesh (1) is provided with a vibration equalization structure (7) to make the pulp and fibers vibrate evenly.

2. The wire section vibration device for improving paper sheet uniformity according to claim 1, characterized in that: The first connecting frame (4) and the second connecting frame (5) are both set as "U" shaped structures, and the sides of the first connecting frame (4) and the second connecting frame (5) are both set as arc surfaces.

3. The wire section vibration device for improving paper sheet uniformity according to claim 1, characterized in that: The drive structure (6) includes an eccentric wheel (601), a drive shaft (602), a full gear (603), a trigger disc (604), a connecting shaft (605), and a drive motor (606). The first connecting frame (4) is attached to the side of the eccentric wheel (601), and the drive shaft (602) is connected to the eccentric wheel (601). The full gear (603) is connected to the drive shaft (602), and the trigger disc (604) is meshed to the side of the full gear (603). The connecting shaft (605) is connected to the trigger disc (604), and the connecting shaft (605) is rotatably connected to the outer wall of the outer frame (2). The end face of the trigger disc (604) contacts the second connecting frame (5). The drive shaft (602) is connected to the drive motor (606).

4. The wire section vibration device for improving paper sheet uniformity according to claim 3, characterized in that: The trigger disk (604) has tooth blocks at equal angles on its side for meshing with the full gear (603), and the trigger disk (604) has an inclined protrusion on the end face near the outer frame (2) for pressing the second connecting frame (5).

5. The wire section vibration device for improving paper sheet uniformity according to claim 1, characterized in that: The vibration equalization structure (7) includes a concave plate (701), a support rod (702), and a ball (703). The bottom of the mesh (1) is equipped with several concave plates (701) at equal intervals, and each concave plate (701) is provided with a ball (703). At least three support rods (702) for limiting the ball (703) are connected at equal angles to the opening area of ​​each concave plate (701).

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