A rapid impurity filtering device in paper towel processing

Abstract

The utility model discloses a kind of quick filtering device in paper towel processing, it is related to paper towel production technical field, including collection frame, the center top of the collection frame is provided with disc type filter box, the bottom of the disc type filter box is provided with filter hole, the inside of the disc type filter box is provided with scraping strip, and the filter hole and scraping strip are used to remove mixed paper pulp internal fiber bundle, not completely decomposed lignin fragment and resin precipitate.This utility model passes through filter hole and disc type filter box, delicate paper pulp will pass through filter hole and fall to the inside of collection frame, and the lignin fragment and resin precipitate possibly remaining in paper pulp inside will be left in the top of filter hole. Thus it will reach the filtering effect to paper pulp internal lignin fragment and resin precipitate. Scattering paper pulp helps to promote the separation of small fiber and impurity, so that delicate paper pulp is more easily passed through filter hole, and larger impurity is intercepted above filter hole.

Description

Technical Field

[0001] This utility model relates to the field of paper towel production technology, and in particular to a rapid impurity filtering device in paper towel processing. Background Technology

[0002] The production of paper towels primarily uses wood pulp, with some products using bamboo pulp, bagasse pulp, or even recycled paper as raw materials. The process begins by turning wood paper into pulp, which is then washed, bleached, and diluted into an extremely thin liquid. This liquid is then filtered through a large papermaking screen to form wet paper sheets, which are subsequently pressed and dehydrated before being rapidly dried in high-temperature drying cylinders. Finally, the massive rolls of raw paper are cut, folded, or rolled into smaller rolls, and then packaged to become the various types of paper towels we use daily.

[0003] After the existing paper pulping process, fiber bundles, incompletely decomposed lignin fragments, and resin precipitates may remain inside the pulp. Insufficiently dispersed fiber bundles can easily clog the screen openings in the paper machine wire section, leading to decreased dewatering efficiency; in the press section, they may cause poor paper uniformity, affecting tensile strength; and in the drying section, fiber bundle accumulation may impair heat transfer, reducing drying cylinder efficiency. Furthermore, these residues can cause spots and holes in the produced paper towels, thus reducing the uniformity and smoothness of the paper towels.

[0004] To address the issue of lignin fragments and resin precipitates potentially remaining inside the pulp, the pulp is dispersed in a filtering device. The dispersed pulp falls into a collection box, while any remaining lignin fragments and resin precipitates are retained within the filtering device. This filtering device effectively removes fiber bundles, lignin fragments, and resin precipitates through physical screening, preventing these impurities from accumulating in the wire section, press section, or pipes, significantly reducing the risk of equipment clogging. Furthermore, removing fiber bundles and lignin fragments from the pulp improves the uniformity of the produced paper towels, reduces defects such as spots and holes, and enhances the smoothness of the paper towels.

[0005] Furthermore, in current pulp applications, the pulp is often lumpy after manufacturing, lacking internal looseness. This lumpy pulp easily clogs the screen openings in the paper machine wire section, leading to decreased dewatering efficiency and affecting paper uniformity. Compacted pulp lumps require intensive agitation and dispersal in a specialized hydraulic pulper to redisperse them into a uniform fiber suspension. The more compact the pulp lumps, the more energy the dispersal process consumes and the longer it takes, directly reducing production efficiency. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rapid impurity filtering device for paper towel processing, which solves the problem that lignin fragments and resin precipitates may remain inside the pulp.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A rapid impurity filtration device for paper towel processing includes a collection frame with a disc-shaped filter box at its central top. The bottom of the disc-shaped filter box has filter holes, and a scraping strip is installed inside the filter box. The filter holes and scraping strip are used to remove fiber bundles, incompletely decomposed lignin fragments, and resin precipitates from the mixed pulp. This ensures that defects such as spots and holes are not generated during subsequent paper towel production.

[0009] As a further improvement of this utility model, four locking grooves are evenly provided at the bottom of the inner side of the collection frame, and a locking block is provided inside each locking groove. An insertion plate is fixedly connected to the top of each locking block. This prevents the pulp from shifting position during the filtration process.

[0010] As a further improvement of this utility model, a connecting rod is fixedly connected to the center of the top of the insertion disc, and a rotating block is rotatably connected to the top of the connecting rod. The rotating block is fixedly connected to the center of the bottom of the disc-shaped filter box. This allows the disc-shaped filter box to rotate.

[0011] As a further improvement of this utility model, a funnel opening is fixedly connected to the center of the top of the disc-shaped filter box, a center plate is fixedly connected to the center of the top surface of the disc-shaped filter box, a conical baffle is fixedly connected to the top of the center plate, and four connecting plates are evenly fixedly connected to the outer surface of the conical baffle. The ends of the connecting plates away from the conical baffle are all fixedly connected to the inner wall of the funnel opening. This allows the pulp to enter the disc-shaped filter box better through the inclined surface. Furthermore, the conical design of the conical baffle protects the motor while facilitating the flow of pulp.

[0012] As a further improvement of this utility model, a motor is provided at the top of each of the central plates, and an electric wire is provided at the top of each motor. A rotating rod is fixedly connected to the bottom output end of the motor. The rotating rod is inserted through the inner wall of the central plate, and the bottom end of the rotating rod is rotatably connected to the center of the inner bottom surface of the disc-shaped filter box. This allows the dispersing mechanism to be activated.

[0013] As a further improvement of this utility model, the scraping strip is fixedly connected to the outside of the rotating rod and the inner bottom surface of the disc-shaped filter box. An annular groove is formed inside the disc-shaped filter box, and the end of the scraping strip away from the rotating rod is slidably connected inside the annular groove. This allows for the dispersing of compacted pulp, facilitating the removal of lignin fragments and resin precipitates from the pulp, while also ensuring the loose pulp is convenient for subsequent paper towel production.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] 1. Through the filter holes and disc-shaped filter box, fine pulp falls into the collection frame, while lignin fragments and resin precipitates that may remain inside the pulp are retained at the top of the filter holes. This achieves the effect of filtering lignin fragments and resin precipitates from the pulp. Breaking up the pulp helps promote the separation of fine fibers and impurities, making it easier for fine pulp to pass through the filter holes, while larger impurities are trapped above the filter holes.

[0016] 2. The scraping strip breaks up the pulp, resulting in more even fiber dispersion, increased contact area and hydrogen bonding between fibers, thus improving the tensile strength, bursting strength, and folding endurance of the paper towel. Furthermore, the broken pulp is more evenly distributed during forming, preventing excessively dense or sparse areas of fiber, and enhancing the softness and feel of the paper towel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional mechanism of this utility model.

[0018] Figure 2 This is a three-dimensional schematic diagram of the insertion disc, rotating block, and disc-shaped filter box in this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram of the collecting frame and locking groove in this utility model.

[0020] Figure 4 This is a three-dimensional schematic diagram of the disc-shaped filter box, motor, and wires of this utility model.

[0021] Figure 5 This utility model Figure 4 A cross-sectional three-dimensional schematic diagram of the central disc type filter box.

[0022] Figure 6 This is a three-dimensional schematic diagram of the funnel opening, conical baffle, and connecting plate in this utility model.

[0023] In the diagram: 101, collection frame; 102, locking groove; 103, locking block; 104, insertion disc; 105, connecting rod; 106, rotating block; 201, disc-shaped filter box; 202, filter holes; 203, funnel mouth; 204, conical baffle; 205, connecting plate; 206, center plate; 207, motor; 208, wire; 209, rotating rod; 210, scraping bar; 211, annular groove. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] See attached document Figure 1 - Appendix Figure 6 A rapid impurity filtering device for paper towel processing includes a collection frame 101, an insertion plate 104, a connecting rod 105, a rotating block 106, a disc-shaped filter box 201, filter holes 202, a funnel opening 203, a conical baffle 204, a motor 207, and a scraping bar 210.

[0027] This example demonstrates the process after the initial pulp production is complete. When using this invention, the lifting device first drives... Figure 2 All components are moved into the collection frame 101. The aforementioned lifting mechanism is prior art and will not be described further in this patent. At this time, the insertion disc 104 is aligned and fitted against the inner wall of the collection frame 101. Then, the lifting device is slightly rotated to lock the locking block 103 into the locking groove 102. Thus, when the disc filter box 201 filters impurities from the pulp, the entire device will not shift position. The locking structure of the locking block 103 and the locking groove 102 ensures that the disc filter box 201 will not shift due to external force or vibration during filtration. This design directly solves the problem of incomplete filtration or leakage caused by unstable position during filtration in traditional devices, ensuring the uniformity of pulp quality. Moreover, the stable device structure allows the disc filter box 201 to work continuously and efficiently, avoiding filtration interruption or efficiency reduction due to displacement.

[0028] when Figure 2After the intermediate components are secured, the mixed pulp is poured into the disc filter box 201 through the funnel opening 203. During the pulp pouring process, the conical design of the conical baffle 204 facilitates the flow of pulp into the disc filter box 201, and also protects the motor 207 inside. The inclined structure of the conical baffle 204 guides the pulp along a specific path, preventing it from accumulating or splashing at the edges. Similar to the application of a conical feed inlet in a mold, its 30° inclination angle optimizes the fluid velocity distribution, allowing the pulp to flow more smoothly into the center of the disc filter box 201, reducing resistance and energy consumption during pouring. Furthermore, the conical baffle 204 forms a protective layer around the motor 207, preventing solid particles or fibers in the pulp from directly impacting the motor 207, thus preventing the motor 207 from jamming or short-circuiting due to foreign objects entering.

[0029] When the pulp enters the disc filter box 201, the motor 207 is energized via the power supply connected to the power source through the wire 208, thus starting the motor 207. The starting of the motor 207 causes the rotating rod 209 to rotate. Since the scraping strip 210 is fixedly connected to the surface of the rotating rod 209, and the end of the scraping strip 210 away from the rotating rod 209 is slidably connected in the annular groove 211 opened in the inner wall of the disc filter box 201, as shown... Figure 5 The rotation of the rotating rod 209 causes the scraping bar 210 to uniformly scrape the top surface of the filter holes 202. The scraping action of the scraping bar 210 disperses the pulp, allowing fine pulp to fall through the filter holes 202 into the collection frame 101, while lignin fragments and resin precipitates that may remain inside the pulp are retained at the top of the filter holes 202. This achieves the effect of filtering lignin fragments and resin precipitates from the pulp. The rotation of the scraping bar 210 evenly disperses the pulp within the disc-shaped filter box 201, preventing uneven filtration or leakage caused by excessively high local concentrations. Furthermore, dispersing the pulp promotes the separation of fine fibers and impurities, making it easier for fine pulp to pass through the filter holes 202, while larger impurities are retained.

[0030] Once the collection box 101 is full of filtered pulp, the lifting device controls the process. Figure 2 As the components move upward, the insertion disc 104 moves upward along the inner wall of the collection frame 101, causing the pulp accumulated at its top to move upward as well, thus achieving the effect of quickly removing the filtered pulp. The rapid upward movement of the insertion disc 104 efficiently removes the pulp from the collection frame 101, avoiding the time required for traditional manual or complex mechanical operations. Through the linkage design of the lifting device and the insertion disc 104, the pulp removal process requires no manual operation, reducing labor costs.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rapid impurity filtering device for paper towel processing, comprising a collection frame (101), characterized in that, The collection frame (101) is provided with a disc-shaped filter box (201) at the top center. The bottom of the disc-shaped filter box (201) is provided with filter holes (202). The inside of the disc-shaped filter box (201) is provided with scraping strips (210). The filter holes (202) and scraping strips (210) are used to remove fiber bundles, incompletely decomposed lignin fragments and resin precipitates from the mixed pulp.

2. The rapid impurity filtering device for paper towel processing according to claim 1, characterized in that, The bottom of the collection box (101) is provided with four locking slots (102) evenly distributed inside. Each locking slot (102) is provided with a locking block (103), and the top of the locking block (103) is fixedly connected to an insertion plate (104).

3. The rapid impurity filtering device for paper towel processing according to claim 2, characterized in that, A connecting rod (105) is fixedly connected to the top center of the insertion disc (104), and a rotating block (106) is rotatably connected to the top of the connecting rod (105). The rotating block (106) is fixedly connected to the bottom center of the disc-shaped filter box (201).

4. The rapid impurity filtering device for paper towel processing according to claim 1, characterized in that, A funnel opening (203) is fixedly connected to the center of the top of the disc-shaped filter box (201). A center plate (206) is fixedly connected to the center of the top surface of the disc-shaped filter box (201). A conical baffle (204) is fixedly connected to the top of the center plate (206). Four connecting plates (205) are evenly fixedly connected to the outer surface of the conical baffle (204). The end of the connecting plate (205) away from the conical baffle (204) is fixedly connected to the inner wall of the funnel opening (203).

5. A rapid impurity filtering device for paper towel processing according to claim 4, characterized in that, The top of each of the central plates (206) is provided with a motor (207), the top of the motor (207) is provided with a wire (208), the bottom output end of the motor (207) is fixedly connected with a rotating rod (209), the rotating rod (209) is inserted through the inner wall of the central plate (206), and the bottom end of the rotating rod (209) is rotatably connected to the center of the inner bottom surface of the disc-shaped filter box (201).

6. A rapid impurity filtering device for paper towel processing according to claim 5, characterized in that, The scraping strip (210) is fixedly connected to the outside of the rotating rod (209) and the inside bottom surface of the disc filter box (201). The disc filter box (201) has an annular groove (211) inside. The end of the scraping strip (210) away from the rotating rod (209) is slidably connected to the inside of the annular groove (211).

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