High-breathability paper forming device

Abstract

The utility model belongs to the technical field of paper forming, and particularly relates to a high-air-permeability paper forming device which comprises a headbox and a forming box, the bottom end of the forming box is communicated with the headbox through a conveying assembly, a filter plate is installed in the forming box, a forming net is arranged at the upper end of the filter plate, and the high-air-permeability paper forming device further comprises two buffering pieces and two elastic pieces, the two buffer pieces are symmetrically arranged on the inner wall of the top end of the headbox; the stirring assembly is arranged on the inner wall of the bottom end of the pulp flowing box, a pulp outlet is formed in the bottom end of the pulp flowing box, and the end, away from the pulp flowing box, of the pulp outlet communicates with the pulp outlet pipe. When redundant paper pulp is conveyed into the pulp flowing box by the conveying mechanism, large waves and vortexes cannot be generated in the box body.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper forming, and in particular relates to a high-air-permeability paper forming device. Background Art

[0002] Papermaking is an important invention of the working people in ancient China. There are two forms: machine-made and hand-made. Machine-made papermaking is carried out continuously on a papermaking machine. The pulp suitable for paper quality is diluted with water to a certain concentration, and initially dehydrated on the net of the papermaking machine to form wet paper sheets, which are then squeezed and dehydrated, and then dried into paper. Hand-made papermaking uses a frame with a bamboo screen, polyester net or copper net to copy the fibers suspended in the water into wet paper sheets, which are squeezed and dehydrated, and then dried or dried into paper. The biggest difference between machine-made and hand-made paper is that the fibers in the pulp are well preserved because hand-made paper uses manual beating; machine-made paper uses machine beating, and the pulp fibers are broken. This makes hand-made paper much better than machine-made paper in toughness and tensile strength. The difference in pulp-net speed in machine-made paper leads to uneven longitudinal and transverse distribution of fibers, while hand-made paper does not have uneven longitudinal and transverse distribution of fibers, which is especially reflected in paper for calligraphy and painting.

[0003] Chinese utility model patent CN214782897U discloses a papermaking forming device, which includes: a forming box, a moving mechanism is fixedly installed on the left side wall of the upper end of the forming box, a scraper is movably connected to the right side of the moving mechanism, a filter plate is inserted into the inside of the forming box, a forming net is fixedly installed inside the filter plate through a limiting mechanism, a headbox is fixedly connected to the left side of the forming box through a conveying mechanism, a stirring mechanism is fixedly installed inside the headbox, and through the arrangement of the conveying mechanism between the forming box and the headbox, the excess pulp at the bottom of the forming box can be transported to the inside of the headbox again, so that the filtered pulp can be reused, avoiding the waste of raw materials and reducing the manufacturing cost.

[0004] In the above technical solution, when the conveying mechanism conveys excess pulp into the headbox, large waves and vortices will be generated in the headbox, which will affect the uneven mixing of the pulp. In addition, the strong turbulence may cause air to mix into the pulp, forming bubbles that affect the uniformity of paper forming. Utility Model Content

[0005] The utility model aims to solve the above-mentioned technical problems and provide a highly air-permeable paper forming device, so that when the conveying mechanism conveys excess pulp into the headbox, no large waves and vortices will be generated in the headbox.

[0006] In view of this, the utility model provides a high-permeability paper forming device, comprising: a headbox and a forming box, the bottom end of the forming box is connected to the headbox through a conveying assembly, a filter plate is installed inside the forming box, and a forming net is provided at the upper end of the filter plate, characterized in that it also includes:

[0007] Two buffers, the two buffers are symmetrically arranged on the inner wall of the top end of the headbox;

[0008] A stirring component is arranged on the inner wall of the bottom end of the headbox. The bottom end of the headbox is provided with a pulp outlet, and the pulp outlet is connected with a pulp outlet pipe at one end away from the headbox.

[0009] In the present technical scheme, the pulp is uniformly stirred by the stirring assembly in the headbox, the stirred pulp enters the pulp outlet pipe through the pulp outlet, and is uniformly transported from the pulp outlet pipe to the forming net, and the excess pulp flows from the filter plate to the inside of the forming box, and then the pulp at the bottom of the forming box is transported to the top of the headbox by the conveying assembly. Under the action of the buffer, the impact caused by the reflux of the pulp is reduced, and the formation of large waves and vortices is avoided, thereby improving the uniformity of the pulp and avoiding strong turbulence that may cause air to mix into the pulp and form bubbles that affect the uniformity of paper forming.

[0010] In the above technical solution, further, the conveying component includes: a slurry pump, a feed pipe is connected to one side of the slurry pump, the feed pipe is connected to the bottom side of the forming box at one end away from the slurry pump, and a discharge pipe is connected to the top of the slurry pump, and the discharge pipe is connected to the top of the flow box at one end away from the slurry pump.

[0011] In the technical solution, the pulp suction pump sucks out the excess pulp inside the forming box through the feed pipe, and transports the sucked out pulp to the headbox through the discharge pipe.

[0012] In the above technical solution, further, the buffer member includes: two mounting seats, the two mounting seats are symmetrically mounted on the inner wall of the flow box, a rotating rod is rotatably connected between the mounting seats, and a plurality of interfering flow plates are circumferentially arranged on the outer wall of the rotating rod.

[0013] In the above technical solution, further, the spoiler is L-shaped.

[0014] In the above technical solution, further, a plurality of circular through holes are provided on the spoiler.

[0015] In the present technical solution, when the pulp pump delivers the pulp to the pulp box through the discharge pipe, the impact force of the falling pulp drives the two buffers to rotate. By opening a circular through hole on the spoiler, the pulp can flow out from the circular through hole of the spoiler, and the spoiler is L-shaped so that the flow direction of the pulp can be adjusted and dispersed, which can effectively slow down the outflow speed of the pulp and maximize the uniform outflow of the pulp from the connector.

[0016] In the above technical solution, further, the stirring assembly includes: a drive motor, the drive motor is horizontally installed on the outer wall of the slurry box, the output shaft of the drive motor passes through the slurry box and is connected to a stirring shaft, the outer wall of the stirring shaft is provided with stirring blades, and the stirring blades rotate synchronously with the stirring shaft.

[0017] In the present technical solution, the driving motor is started, and its output shaft begins to rotate, and the power is transmitted to the stirring blades through the stirring shaft that passes through the headbox. The stirring blades rotate synchronously with the stirring shaft to stir the slurry in the headbox to form a flow circulation, thereby promoting uniform mixing of the pulp in the headbox and avoiding fiber precipitation inside the slurry. By providing a slurry outlet on one side of the stirring component, with the cooperation of the stirring component, the slurry outlet pipe can discharge material evenly, thereby improving the quality of the final paper product.

[0018] In the above technical solution, further, a scraping assembly is provided on one side of the top of the molding box, and the scraping assembly includes:

[0019] Two fixed blocks, the two fixed blocks are symmetrically arranged on both sides of the forming box, and the fixed blocks are equipped with screw rods;

[0020] The scraping motor is arranged on a side away from the fixed block. The scraping motor drives the screws on the two fixed blocks to rotate through a transmission member. Slide blocks are provided on the threaded sleeves on the outer walls of the two screws, and a scraper is fixedly connected between the slide blocks.

[0021] In the present technical solution, in order to make the pulp on the forming net more flat and uniform, the scraping motor is driven to rotate the screws on both sides of the forming net with the cooperation of the transmission parts, so that the scraper can scrape horizontally on the upper end of the forming net, thereby improving the overall flatness and uniformity of the pulp on the forming net. At the same time, under the action of the sliding rod, a linear guide is provided for the slider, so that it can move more smoothly and accurately, preventing the slider from shaking, and ensuring that the scraper moves parallel to the forming net.

[0022] In the above technical solution, further, a support plate is fixedly installed on the side wall of the molding box, a support rod is fixedly connected to the upper surface of the support plate, and a sliding rod is fixedly connected to one end of the support rod away from the support plate, wherein the slider is slidably connected to the sliding rod.

[0023] The beneficial effects of the utility model are:

[0024] 1. When the pulp pump delivers the pulp to the headbox through the discharge pipe, the impact force of the falling pulp drives the two buffers to rotate. By opening a circular through hole on the spoiler, the pulp can flow out of the circular through hole of the spoiler, and the spoiler is L-shaped to adjust and disperse the flow direction of the pulp, which can effectively slow down the outflow speed of the pulp and make the pulp flow out of the connector evenly to the maximum extent.

[0025] 2. In order to make the pulp on the forming net more flat and uniform, the scraping motor is driven, and with the cooperation of the transmission parts, the screws on both sides of the forming net are rotated, so that the scraper can scrape horizontally on the upper end of the forming net, improving the overall flatness and uniformity of the pulp on the forming net. At the same time, under the action of the slide bar, a linear guide is provided for the slider, so that it can move more smoothly and accurately, preventing the slide from shaking, and ensuring that the scraper moves parallel to the forming net. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a highly air-permeable paper forming device of the utility model;

[0027] Figure 2 It is a cross-sectional view of a headbox of a high-air-permeability paper forming device of the utility model;

[0028] Figure 3 This is a structural schematic diagram of a buffer component of a highly air-permeable paper forming device of the utility model;

[0029] The marks in the figure indicate

[0030] 1. Slurry box; 2. Forming box; 3. Conveying assembly; 3.1. Slurry pump; 3.2. Feed pipe; 3.3. Discharge pipe; 4. Stirring assembly; 4.1. Driving motor; 4.2. Stirring shaft; 4.3. Stirring blade; 5. Slurry discharge pipe; 6. Scraping assembly; 6.1. Scraping motor; 6.2. Transmission member; 6.3. Fixed block; 6.4. Screw rod; 6.5. Sliding block; 6.6. Scraper; 6.7. Pressing plate; 7. Forming net; 8. Support plate; 9. Support rod; 10. Sliding rod; 11. Buffer; 12. Mounting seat; 13. Rotating rod; 14. Spoiler; 15. Circular through hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0032] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0035] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0036] Embodiment 1:

[0037] Depend on Figure 1-Figure 3 As shown, this embodiment provides a highly air-permeable paper forming device, comprising: a flow box 1 and a forming box 2, wherein the bottom end of the forming box 2 is connected to the flow box 1 through a conveying assembly 3, a filter plate is installed inside the forming box 2, and a forming net 7 is provided on the upper end of the filter plate, and further comprising: two buffer members 11, wherein the two buffer members 11 are symmetrically arranged on the inner wall of the top end of the flow box 1; a stirring assembly 4, wherein the stirring assembly 4 is arranged on the inner wall of the bottom end of the flow box 1, and a pulp outlet is provided at the bottom end of the flow box 1, and the pulp outlet is connected to a pulp outlet pipe 5 at one end away from the flow box 1.

[0038] The pulp is uniformly stirred by the stirring assembly 4 in the headbox 1. The stirred pulp enters the pulp outlet pipe 5 through the pulp outlet and is uniformly transported from the pulp outlet pipe 5 to the forming net 7. After the excess pulp flows from the filter plate to the inside of the forming box 2, the pulp at the bottom of the forming box 2 is transported to the top of the headbox 1 through the conveying assembly 3. Under the action of the buffer 11, the impact caused by the pulp backflow is reduced to avoid the formation of large waves and vortices, thereby improving the uniformity of the pulp and avoiding strong turbulence that may cause air to mix into the pulp and form bubbles that affect the uniformity of paper forming.

[0039] The smaller the mesh number of the forming net 7, the larger the aperture and the better the air permeability. The forming net 7 adopts 3D weaving.

[0040] The conveying assembly 3 includes: a pulp pump 3.1, a feed pipe 3.2 is connected to one side of the pulp pump 3.1, and the end of the feed pipe 3.2 away from the pulp pump 3.1 is connected to the bottom side of the forming box 2, and the top of the pulp pump 3.1 is connected to a discharge pipe 3.3, and the end of the discharge pipe 3.3 away from the pulp pump 3.1 is connected to the top of the headbox 1. The pulp pump 3.1 sucks out the excess pulp in the forming box 2 through the feed pipe 3.2, and transports the sucked pulp to the headbox 1 through the discharge pipe 3.3.

[0041] The buffer member 11 includes two mounting seats 12 symmetrically mounted on the inner wall of the headbox 1 , a rotating rod 13 is rotatably connected between the mounting seats 12 , and a plurality of turbulence plates 14 are circumferentially arranged on the outer wall of the rotating rod 13 .

[0042] Specifically, the spoiler 14 is L-shaped.

[0043] More specifically, the spoiler 14 is provided with a plurality of circular through holes 15 .

[0044] When the pulp pump 3.1 delivers pulp to the pulp headbox 1 through the discharge pipe 3.3, the impact force of the falling pulp drives the two buffers 11 to rotate. By providing a circular through hole 15 on the spoiler 14, the pulp can flow out from the circular through hole 15 of the spoiler 14. The spoiler 14 is L-shaped so that the flow direction of the pulp can be adjusted and dispersed, which can effectively slow down the outflow speed of the pulp and maximize the uniform outflow of the pulp from the connector.

[0045] The stirring assembly 4 comprises: a driving motor 4.1, the driving motor 4.1 is horizontally mounted on the outer wall of the headbox 1, the output shaft of the driving motor 4.1 penetrates the headbox 1 and is connected to a stirring shaft 4.2, the outer wall of the stirring shaft 4.2 is sleeved with a stirring blade 4.3, and the stirring blade 4.3 rotates synchronously with the stirring shaft 4.2. When the driving motor 4.1 is started, its output shaft starts to rotate, and transmits power to the stirring blade 4.3 through the stirring shaft 4.2 penetrating the headbox 1, and the stirring blade 4.3 rotates synchronously with the stirring shaft 4.2, stirring the slurry in the headbox 1 to form a flow cycle, thereby promoting uniform mixing of the pulp in the headbox 1 and avoiding fiber precipitation inside the slurry. By providing a slurry outlet on one side of the stirring assembly 4, the slurry outlet pipe 5 is uniformly discharged with the cooperation of the stirring assembly 4, thereby improving the quality of the final paper product.

[0046] A scraping assembly 6 is provided on one side of the top of the forming box 2, and the scraping assembly 6 includes: two fixed blocks 6.3, which are symmetrically arranged on both sides of the forming box 2, and a screw rod 6.4 is installed on the fixed block 6.3; a scraping motor 6.1, which is arranged on a side away from the fixed block 6.3, and the scraping motor 6.1 drives the screw rods 6.4 on the two fixed blocks 6.3 to rotate through a transmission member 6.2, and a slider 6.5 is provided on the outer wall thread sleeve of the two screw rods 6.4, and a scraper 6.6 is fixedly connected between the sliders 6.5.

[0047] Specifically, a support plate 8 is fixedly installed on the side wall of the molding box 2, a support rod 9 is fixedly connected to the upper surface of the support plate 8, and a slide rod 10 is fixedly connected to one end of the support rod 9 away from the support plate 8, wherein the slider 6.5 is slidably connected to the slide rod 10.

[0048] In order to make the pulp on the forming net 7 more flat and uniform, the scraping motor 6.1 is driven to rotate the screw rods 6.4 on both sides of the forming net 7 in cooperation with the transmission member 6.2, so that the scraper 6.6 scrapes horizontally on the upper end of the forming net 7 to improve the overall flatness and uniformity of the pulp on the forming net 7. At the same time, under the action of the slide bar 10, a linear guide is provided for the slide block 6.5, so that it can move more smoothly and accurately, prevent the slide block from shaking, and ensure that the scraper 6.6 moves parallel to the forming net 7.

[0049] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A high air permeability paper forming device, characterized in that: include: A headbox (1) and a forming box (2), wherein the bottom end of the forming box (2) is connected to the headbox (1) via a conveying assembly (3), a filter plate is installed inside the forming box (2), and a forming net (7) is provided at the upper end of the filter plate, and further comprises: Two buffer members (11), the two buffer members (11) being symmetrically arranged on the inner wall of the top end of the headbox (1); A stirring assembly (4) is arranged on the inner wall of the bottom end of the headbox (1); a pulp outlet is arranged at the bottom end of the headbox (1); and the pulp outlet is connected to a pulp outlet pipe (5) at one end away from the headbox (1).

2. A highly air-permeable paper forming device according to claim 1, characterized in that: The conveying assembly (3) comprises: a slurry pump (3.1); one side of the slurry pump (3.1) is connected to a feed pipe (3.2); an end of the feed pipe (3.2) away from the slurry pump (3.1) is connected to one side of the bottom of the forming box (2); the top of the slurry pump (3.1) is connected to a discharge pipe (3.3); an end of the discharge pipe (3.3) away from the slurry pump (3.1) is connected to the top of the headbox (1).

3. A highly air-permeable paper forming device according to claim 2, characterized in that: The buffer member (11) comprises: two mounting seats (12), the two mounting seats (12) are symmetrically mounted on the inner wall of the flow box (1), a rotating rod (13) is rotatably connected between the mounting seats (12), and a plurality of interfering flow plates (14) are circumferentially arranged on the outer wall of the rotating rod (13).

4. A highly air-permeable paper forming device according to claim 3, characterized in that: The spoiler (14) is in an L-shape.

5. A highly air-permeable paper forming device according to claim 4, characterized in that: The spoiler (14) is provided with a plurality of circular through holes (15).

6. The highly air-permeable paper forming device according to claim 1, characterized in that: The stirring assembly (4) comprises: a driving motor (4.1), the driving motor (4.1) being horizontally mounted on the outer wall of a headbox (1), the output shaft of the driving motor (4.1) penetrating the headbox (1) and connected to a stirring shaft (4.2), the outer wall of the stirring shaft (4.2) being sleeved with stirring blades (4.3), and the stirring blades (4.3) and the stirring shaft (4.2) rotating synchronously in a circumferential direction.

7. The highly air-permeable paper forming device according to claim 1, characterized in that: A scraping assembly (6) is provided on one side of the top end of the molding box (2), and the scraping assembly (6) comprises: Two fixed blocks (6.3), the two fixed blocks (6.3) are symmetrically arranged on both sides of the molding box (2), and a screw rod (6.4) is installed on the fixed blocks (6.3); A scraping motor (6.1) is provided at a side away from the fixed block (6.3), and the scraping motor (6.1) drives the screw rods (6.4) on the two fixed blocks (6.3) to rotate through a transmission member (6.2). The outer walls of the two screw rods (6.4) are threadedly sleeved with sliders (6.5), and a scraper (6.6) is fixedly connected between the sliders (6.5).

8. The highly air-permeable paper forming device according to claim 7, characterized in that: A support plate (8) is fixedly mounted on the side wall of the molding box (2), a support rod (9) is fixedly connected to the upper surface of the support plate (8), and a sliding rod (10) is fixedly connected to one end of the support rod (9) away from the support plate (8), wherein the slider (6.5) is slidably connected to the sliding rod (10).

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