A forming fabric for a paper machine

Abstract

The utility model relates to the technical field of net section forming plate for kraft paperboard production, especially to a net section forming plate for kraft paperboard production dehydration. The net section forming plate for kraft paperboard production dehydration comprises two supports, a forming plate body, a supporting assembly, a clamping groove and a clamping assembly. The two supports are symmetrically connected with rotating rollers on their proximal sides. The rotating rollers are externally provided with a forming net body. The distal sides of the two supports are fixedly connected with accommodating blocks. The supports are internally provided with insertion holes. The inner walls of the insertion holes are slidably connected with the forming plate body. The top middle part of the forming plate body is provided with a groove. The groove is provided with multiple flow guide grooves. The top sides of the forming plate body are both provided with smooth layers. The utility model avoids water flow accumulation and reverse osmosis, optimizes the wet paper web dehydration effect, guarantees paper evenness, simplifies the operation process, reduces equipment downtime, and improves production and operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of wire mesh forming plates for kraft paperboard production, and in particular to a wire mesh forming plate for dewatering kraft paperboard production. Background Technology

[0002] Kraft paperboard is a high-strength, high-bursting-resistance paperboard made primarily from sulfate wood pulp, commonly used in packaging cartons and other applications. During production, the pulp forms a wet paper web on a forming wire. A forming plate is installed below the forming wire, supporting it to ensure its smooth operation and prevent wrinkles or tears in the wet paper web. It also utilizes the inclined surface to guide water out of the wire using gravity, thus efficiently assisting the wet paper web in initial dehydration during movement, laying the foundation for subsequent drying processes.

[0003] Most wire forming plates are typically installed between two supports by tightening bolts and nuts with tools, fixing them below the forming wire to provide support and prevent wrinkles or breaks in the wet paper web. They also utilize the principle of inclined slope to guide water out from under the wire. However, relying solely on the inclined slope for drainage can easily lead to water accumulation on the surface of the forming plate, affecting the dehydration effect of the wet paper web and consequently causing a decrease in paper uniformity. Furthermore, the method of tightening bolts and nuts with tools is not only cumbersome and time-consuming, but also results in low efficiency in installing or replacing forming plates.

[0004] Therefore, it is necessary to provide a new wire mesh forming plate for dewatering in kraft paperboard production to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wire mesh forming plate for dewatering in the production of kraft paperboard.

[0006] This utility model provides a wire mesh forming plate for dewatering in kraft paperboard production, comprising: two supports, a forming plate body, support components, locking grooves, and locking components. Rotating rollers are symmetrically rotatably connected to the adjacent sides of the two supports. A forming wire mesh body is sleeved on the outside of the two rotating rollers. Receiving blocks are fixedly connected to the distant sides of the two supports. Insertion holes are provided inside the supports. The forming plate body is slidably connected to the inner walls of the two insertion holes. A groove is provided at the center of the top of the forming plate body, and multiple guide grooves are provided on the groove. Smooth layers are provided on both sides of the top of the forming plate body. A handle groove is provided on one side of the forming plate body. Multiple support components are installed at the bottom of the adjacent sides of the two supports. Two locking grooves are provided at the bottom of the portion of the forming plate body located at the front receiving block. Two receiving chambers are symmetrically provided inside the bottom of the front receiving block, and locking components are installed inside the receiving chambers.

[0007] Preferably, the support assembly includes a support plate, the two sides of which are fixedly connected to the bottom ends of the two brackets on the same side, and inclined reinforcing rods are symmetrically fixedly connected to the bottom ends of the support plate.

[0008] Preferably, the engaging assembly includes a limiting plate, the outer side of which is slidably connected to the inner wall of the receiving chamber, an engaging rod fixedly connected to the top of the limiting plate, a sliding rod fixedly connected to the bottom of the limiting plate, a spring sleeved on the outer side of the sliding rod, and a pull plate fixedly connected to the bottom of the two sliding rods.

[0009] Preferably, one side of the outer side of the molding plate body is slidably connected to the inner wall of the front receiving block, and the other side of the outer side of the molding plate body is inserted into one side of the inner wall of the rear receiving block.

[0010] Preferably, the far sides of the plurality of inclined reinforcing rods are fixedly connected to the near sides of the two brackets below the support plate, and the tops of the plurality of support plates are in contact with the bottom of the molding plate body.

[0011] Preferably, the outer top of the engaging rod engages with the inner wall of the engaging groove.

[0012] Preferably, the top end of the spring is fixedly connected to the bottom end of the limiting plate, and the bottom end of the spring is fixedly connected to the bottom end of the inner wall of the receiving chamber.

[0013] Compared with related technologies, the wire mesh forming plate for dewatering in kraft paperboard production provided by this utility model has the following beneficial effects: 1. Improved dewatering efficiency: By setting grooves and multiple guide channels at the top of the forming board body, compared with the traditional method of relying solely on inclined slope for drainage, it can guide the water under the wire to drain out more efficiently, avoid water accumulation and back seepage, optimize the dewatering effect of wet paper web, and ensure paper uniformity.

[0014] 2. Improved ease of installation: Eliminating the need for tools to tighten bolts and nuts, the system utilizes insertion holes, handle slots, locking rods, limit plates, and springs to enable quick assembly and disassembly of the molded plate body, simplifying the operation process, reducing equipment downtime, and improving production and maintenance efficiency.

[0015] 3. Enhanced operational stability: The support plate and inclined reinforcing rod strengthen the support of the forming plate body, offset the vibration and weight during operation, maintain the flatness of the forming wire, and the smooth layer at the top of the forming plate reduces friction with the forming wire. This dual protection ensures stable operation of the equipment and reduces the risk of wrinkles and breakage of wet paper web. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a wire mesh forming plate for dewatering in the production of kraft paperboard provided by this utility model; Figure 2 for Figure 1The diagram shows the structure of the formed mesh body. Figure 3 for Figure 1 The diagram shows the structure of the molded plate body. Figure 4 for Figure 3 Enlarged view of point A in the image; Figure 5 for Figure 1 The diagram shows the structure of the locking assembly.

[0017] The following are the labels in the diagram: 1. Support; 2. Rotating roller; 3. Forming mesh body; 4. Receiving block; 5. Insertion hole; 6. Forming plate body; 7. Groove; 8. Guide groove; 9. Smooth layer; 10. Handle groove; 11. Support plate; 12. Inclined reinforcing rod; 13. Engaging groove; 14. Receiving chamber; 15. Limiting plate; 16. Engaging rod; 17. Sliding rod; 18. Spring; 19. Pull plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] Please see Figures 1 to 5 A forming plate for dewatering kraft paperboard production includes: two supports 1, which are arranged in parallel and symmetrically connected to rotating rollers 2 on their adjacent sides. A ring-shaped forming wire body 3 for carrying pulp forming is tightly fitted on the outside of the two rotating rollers 2. The forming wire body 3 is woven from a high-strength, wear-resistant mesh material. A receiving block 4 is fixedly connected to the opposite side of the two supports 1. An insertion hole 5 is provided through the inside of the supports 1 for inserting the forming plate body 6. The size of the insertion hole 5 is adapted to the forming plate body 6 to ensure smooth sliding.

[0021] The inner walls of the two insertion holes 5 of the molding plate body 6 are slidably connected to the outer walls of both sides of the molding plate body 6, allowing the molding plate body 6 to slide smoothly along the length of the insertion holes 5. The outer side of one side of the molding plate body 6 is slidably connected to the hollow inner wall of the front receiving block 4, and the outer side of the other side of the molding plate body 6 is inserted into the inner wall of the opening on one side of the rear receiving block 4, thus achieving front-back direction limiting. At the top center of the molding plate body 6, a groove 7 for collecting water is recessed downwards. On the groove 7, multiple guide grooves 8 with arc-shaped cross sections are evenly formed along its length to guide water flow out. Both sides of the top of the molding plate body 6 are coated with a smooth layer 9 to reduce friction. On one end face of the molding plate body 6, a handle groove 10 is formed inwards to facilitate hand gripping and operation. The shape of the handle groove 10 is adapted to the grip of a hand.

[0022] A support assembly is installed at the bottom of the two supports 1 on their adjacent sides. The support assembly includes a horizontally arranged support plate 11. The two sides of the support plate 11 are fixedly connected to the bottom of the two supports 1 on their adjacent sides. Inclined reinforcing rods 12 are symmetrically fixedly connected to the bottom of the support plate 11 along its length. The opposite sides of the plurality of inclined reinforcing rods 12 are fixedly connected to the adjacent sides of the two supports 1 below the support plate 11. The top plane of the plurality of support plates 11 contacts the bottom plane of the molding plate body 6, providing stable support for the molding plate body 6.

[0023] The bottom end of the forming plate body 6 located in the front receiving block 4 has two recessed grooves 13 for engaging with the locking rod 16. The shape of the grooves 13 is adapted to the top of the locking rod 16. Inside the bottom end of the front receiving block 4, two symmetrical receiving chambers 14 are provided for accommodating the locking components.

[0024] The locking assembly, inside the receiving chamber 14, is used to lock and fix the molding plate body 6. The locking assembly includes a limiting plate 15 that can slide up and down in the receiving chamber 14. The outer side of the limiting plate 15 is slidably connected to the inner wall of the receiving chamber 14. At the top center of the limiting plate 15, a locking rod 16 for locking into the locking groove 13 is vertically fixedly connected upward. The top of the locking rod 16 is set to adapt to the shape of the locking groove 13. At the bottom center of the limiting plate 15, a sliding rod 17 is vertically fixedly connected downward. A spring 18 for providing a return spring force is sleeved on the outer side of the sliding rod 17. The top of the spring 18 is fixedly connected to the bottom plane of the limiting plate 15, and the bottom of the spring 18 is fixedly connected to the bottom plane of the inner wall of the receiving chamber 14. Pull plates 19 for pulling the sliding rods 17 are fixedly connected to the bottom of the two sliding rods 17. The pull plates 19 facilitate the operator to apply force and control the working state of the locking assembly.

[0025] The working principle of the wire mesh forming plate for dewatering in kraft paperboard production provided by this utility model is as follows: First, before the device is started, the forming wire body 3 is fitted outside the two rotating rollers 2, forming the basic conveying structure. When the kraft paperboard production begins, the power source drives the rotating rollers 2 on the two supports 1 to rotate. The rotating rollers 2 drive the forming wire body 3 to circulate. The pulp is sprayed from the headbox onto the upper surface of the forming wire body 3. As it moves, it begins to undergo preliminary dewatering and forming. This is the initial stage of paper web forming. Next, the forming plate body 6 participates in the work. The operator uses the handle groove 10 on one side of the forming plate body 6 to align it with the insertion hole 5 inside the support 1, and pushes the forming plate body 6 to slide along the inner wall of the insertion hole 5, so that part of it enters the front receiving block 4 and part of it is inserted into the rear receiving block 4. During the process, the groove 7 at the top of the forming plate body 6 and multiple guide grooves 8 receive the water that seeps down from the forming wire body 3. The water is guided by gravity and the guide grooves 8 to accelerate the discharge. The smooth layer 9 on both sides of the top reduces the friction with the forming wire body 3, ensuring smooth operation of the forming wire and preventing the wet paper web from wrinkling due to friction. Subsequently, the support components come into play. The support plate 11 and the inclined reinforcing rod 12 at the bottom of the bracket 1 support the forming plate body 6 from below. The support plate 11 provides a stable support surface, and the inclined reinforcing rod 12 strengthens the structural strength, offsetting the weight and operating vibration of the forming wire body 3, wet paper web, and forming plate body 6, ensuring the stability of the forming plate body 6, maintaining the flatness of the forming wire, and providing a reliable support environment for dewatering and paper web forming. When the forming plate body 6 slides to the front receiving block 4, the locking component is triggered and fixed, pulling the pull plate 19. The pull plate 19 drives the limiting plate 15 to compress the spring 18 through the sliding rod 17, which in turn causes the locking rod 16 to move downward. When the forming plate body 6 is in place, the spring 18 elastically resets, pushing the limiting plate 15 upward, so that the top of the locking rod 16 is engaged in the locking groove 13, completing the locking and fixing of the forming plate body 6 and the receiving block 4, preventing the forming plate body 6 from shifting during operation, and ensuring stable operation of the equipment.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wire mesh forming board for dewatering in the production of kraft paperboard, characterized in that, include: Two supports (1), rotating rollers (2) are symmetrically rotatably connected to the adjacent sides of the two supports (1), and a forming mesh body (3) is sleeved on the outside of the two rotating rollers (2). A receiving block (4) is fixedly connected to the distant side of the two supports (1), and an insertion hole (5) is opened inside the support (1). The molding plate body (6) is slidably connected to the inner walls of the two insertion holes (5). A groove (7) is provided in the middle of the top of the molding plate body (6). Multiple guide grooves (8) are provided on the groove (7). A smooth layer (9) is provided on both sides of the top of the molding plate body (6). A handle groove (10) is provided on one side of the molding plate body (6). Support components, multiple support components are installed on the bottom ends of the two brackets (1) on their adjacent sides; The molding plate body (6) has two locking grooves (13) at the bottom of the portion of the front receiving block (4), and two receiving chambers (14) are symmetrically opened inside the bottom of the front receiving block (4). The engaging assembly is installed inside the receiving chamber (14).

2. The wire mesh forming plate for dewatering in kraft paperboard production according to claim 1, characterized in that, The support assembly includes a support plate (11), the two sides of which are fixedly connected to the bottom ends of the two brackets (1) on the same side, and the bottom ends of the support plate (11) are symmetrically fixedly connected with inclined reinforcing rods (12).

3. The wire mesh forming plate for dewatering in kraft paperboard production according to claim 1, characterized in that, The locking assembly includes a limiting plate (15), the outer side of the limiting plate (15) is slidably connected to the inner wall of the receiving chamber (14), the top end of the limiting plate (15) is fixedly connected to a locking rod (16), the bottom end of the limiting plate (15) is fixedly connected to a sliding rod (17), the outer side of the sliding rod (17) is fitted with a spring (18), and the bottom ends of the two sliding rods (17) are fixedly connected to a pull plate (19).

4. The wire mesh forming plate for dewatering in kraft paperboard production according to claim 1, characterized in that, One side of the outer side of the molding plate body (6) is slidably connected to the inner wall of the front receiving block (4), and the other side of the outer side of the molding plate body (6) is inserted into the inner wall of one side of the rear receiving block (4).

5. A wire mesh forming plate for dewatering in kraft paperboard production according to claim 2, characterized in that, The far side of the plurality of inclined reinforcing rods (12) is fixedly connected to the near side of the two brackets (1) below the support plate (11), and the top of the plurality of support plates (11) is in contact with the bottom of the molding plate body (6).

6. The wire mesh forming plate for dewatering in kraft paperboard production according to claim 3, characterized in that, The outer top of the locking rod (16) engages with the inner wall of the locking groove (13).

7. A wire mesh forming board for dewatering in kraft paperboard production according to claim 3, characterized in that, The top end of the spring (18) is fixedly connected to the bottom end of the limiting plate (15), and the bottom end of the spring (18) is fixedly connected to the bottom end of the inner wall of the receiving chamber (14).

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