Spiral flow guide assembly for separating fine fibers from tissue paper

Abstract

The utility model relates to papermaking technical field discloses the spiral flow guide subassembly of fine fiber separation of life paper, including support base, be provided with drive assembly in support base, drive assembly drive end fixedly connected with transmission shaft, transmission shaft penetrates pressure screen, be provided with filter assembly in pressure screen, a plurality of flow guide plates are fixedly connected with the outer surface of filter assembly, and the inner surface of pressure screen is matched with flow guide plate and pressure, and filter assembly is fixedly connected with transmission shaft, and the top of filter assembly is rotatably connected with inlet pipeline, and inlet pipeline is connected with inlet mouth. In the utility model, through the cooperation of filter assembly, multiple filtration of paper pulp is realized, through the cooperation of abutting and pressing assembly, abutting and pressing of filter assembly is realized, the filter assembly is prevented from blocking, through the cooperation of multiple structures, the fiber utilization rate is improved, the separation efficiency and the production capacity are improved, and the filter device is prevented from blocking, and the production efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a spiral guide component for separating fine fibers in household paper. Background Technology

[0002] The production of tissue paper and the pulping process of recycled paper generate a large amount of white water, which contains a significant amount of fine fibers and fillers. Direct discharge of these fine fibers with wastewater not only results in severe resource waste but also increases the burden and cost of wastewater treatment. With tightening environmental policies and rising raw material prices, the paper industry's demand for closed-loop white water recycling and fine fiber recovery is becoming increasingly strong, and efficient separation components are key to achieving this goal.

[0003] However, in existing spiral guide components for separating fine fibers in household paper, a drive device is usually used to rotate the screen drum to filter white water. However, it is not considered that relying solely on the rotation of the screen drum for filtration can lead to fiber clogging of the filter holes, thus affecting the use of the device.

[0004] Therefore, a spiral guide assembly for separating fine fibers in household paper is proposed to address the above-mentioned problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a spiral flow guiding component for separating fine fibers in household paper, aiming to improve the problem of fiber clogging of filter holes in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A spiral guide assembly for separating fine fibers of household paper includes a support base, a drive assembly inside the support base, a drive shaft fixedly connected to the drive end of the drive assembly, the drive shaft passing through a pressure screen, a filter assembly inside the pressure screen, several guide plates fixedly connected to the outer surface of the filter assembly, the guide plates pressing against the inner surface of the pressure screen, the filter assembly being fixedly connected to the drive shaft, a feed pipe rotatably connected to the top of the filter assembly, the feed pipe communicating with a feed inlet, and a pressing assembly pressing against the filter assembly at the bottom of the inner wall of the pressure screen. As a further description of the above technical solution: The filter assembly includes a filter plate one fixedly connected to the drive shaft, a plurality of elastic rods fixedly connected to the bottom of the filter plate one, a filter plate two fixedly connected to the top of the filter plate one, and a filter plate three fixedly connected to the top of the filter plate two. As a further description of the above technical solution: The filter plate is a circular frame with 0.10mm filter holes on its outer surface. As a further description of the above technical solution: The second filter plate is a circular frame with 0.12mm filter holes on its outer surface; As a further description of the above technical solution: The filter plate three is a circular frame with filter holes of 0.15mm on its outer surface; As a further description of the above technical solution: The pressing assembly includes a pressing plate fixedly connected to one bottom end of the filter plate, a drive shaft movably passing through the pressing plate, a protective shell fixedly connected to the bottom end of the pressing plate, a rotating plate fixedly connected to the drive shaft inside the protective shell, and a pressing column fixedly connected to the top end of the rotating plate, the pressing column and the pressing plate pressing against each other. As a further description of the above technical solution: A stirring sleeve is fixedly connected to the end of the drive shaft that passes through the feed pipe; As a further description of the above technical solution: The guide vane is a spiral guide vane with an arc.

[0007] This utility model has the following beneficial effects: In this invention, multiple filtrations of pulp are achieved through the cooperation of the filter components, and the pressure component is used to press and shake the filter components to prevent clogging. Through the cooperation of multiple structures, fiber utilization is improved, separation efficiency and production capacity are increased, clogging of the filter device is prevented, and the production efficiency of the device is improved. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of the spiral flow guiding component for separating fine fibers in household paper proposed in this utility model; Figure 2 This is a schematic diagram of the pressure screen and support base of the spiral flow guiding component for separating fine fibers in household paper proposed in this utility model. Figure 3 This is a schematic diagram of the pressure screen cross-section of the spiral flow guiding component for separating fine fibers in household paper proposed in this utility model. Figure 4 This is a schematic diagram of the filter plate one and filter plate two of the spiral flow guiding assembly for separating fine fibers of household paper proposed in this utility model. Figure 5 This is a schematic diagram of the feed pipe and elastic rod of the spiral guide assembly for separating fine fibers in household paper proposed in this utility model. Figure 6 This is a schematic diagram of the pressure plate and rotating plate of the spiral guide assembly for separating fine fibers in household paper proposed in this utility model. Figure 7This is a schematic diagram of the cross-sectional structure of the feed pipe of the spiral guide assembly for separating fine fibers of household paper proposed in this utility model.

[0009] Legend: 1. Pressure screen; 2. Support base; 3. Drive assembly; 4. Drive shaft; 5. Guide plate; 6. Filter plate one; 7. Filter plate two; 8. Filter plate three; 9. Feed pipe; 10. Feed inlet; 11. Elastic rod; 12. Protective shell; 13. Pressure plate; 14. Rotating disc; 15. Pressure column; 16. Agitator sleeve. Detailed Implementation

[0010] 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.

[0011] Reference Figures 1 to 7 This utility model provides an embodiment of a spiral guide assembly for separating fine fibers in household paper, including a support base 2 for supporting the operation of the overall structure. A drive assembly 3 is installed inside the support base 2. The drive assembly 3 drives the rotation of a transmission shaft 4, thereby enabling the filter assembly inside the pressure screen 1 to filter the pulp. A screening mechanism is added to the bottom of the pressure screen 1 to return useful fibers with a particle size >50μm that were accidentally carried during the separation process to the screen, improving raw material utilization. The drive end of the drive assembly 3 is fixedly connected to the transmission shaft 4, which receives power from the drive assembly 3 and drives the operation of the filter assembly. The transmission shaft 4 passes through the pressure screen 1, which contains the filter assembly. A pressure linkage controller is installed at the outlet of the pressure screen 1 to collect real-time pulp velocity data of 2-5m / s and pressure data of 0.2-0.4MPa at the outlet of the pulp pump. The drive drum rotation speed is adaptively adjusted within the range of 500-800r / min to match different production conditions. The filter assembly includes a filter plate 6 fixedly connected to the drive shaft 4. The filter plate 6 is used for the final filtration of the pulp. Several elastic rods 11 are fixedly connected to the bottom of the filter plate 6. The elastic rods 11 are used to press against the assembly and keep the device stable after the filter assembly shakes. A filter plate 7 is fixedly connected to the top of the filter plate 6. The filter plate 7 is used for secondary filtration of the pulp. A filter plate 8 is fixedly connected to the top of the filter plate 7. The filter plate 8 is used to receive the raw pulp and perform preliminary filtration. It should be noted that: filter plate 6 is a circular frame with 0.10mm filter holes on its outer surface, filter plate 7 is a circular frame with 0.12mm filter holes on its outer surface, and filter plate 8 is a circular frame with 0.15mm filter holes on its outer surface. Several guide plates 5 are fixedly connected to the outer surface of the filter assembly. The guide plates 5 are spiral guide plates, which form a clockwise swirling flow of pulp. Using centrifugal force, the fine fibers are thrown towards the inner wall of the filter assembly. With the negative pressure suction port with a vacuum degree of -0.03MPa, the fine fibers are discharged in a directional manner, ensuring a separation efficiency of ≥90%. The guide plates 5 are curved and press against the inner surface of the pressure screen 1. The filter assembly is fixedly connected to the drive shaft 4. The top of the filter assembly is rotatably connected to the feed pipe 9. The feed pipe 9 is set to transport the pulp to the filter plate 8. The feed pipe 9 is connected to the feed port 10. The bottom of the inner wall of the pressure screen 1 is provided with a pressing component that presses against the filter assembly. The pressing assembly includes a pressing plate 13 fixedly connected to the bottom end of the filter plate 6. The pressing plate 13 is set to make the filter device shake, which is used to prevent the filter device from being blocked. The drive shaft 4 moves through the pressing plate 13. A protective shell 12 is fixedly connected to the bottom end of the pressing plate 13. The protective shell 12 is set to prevent fibers from getting tangled in the internal structure. A rotating plate 14 is set inside the protective shell 12 and is fixedly connected to the drive shaft 4. The rotating plate 14 is an inclined rotating plate. The pressing of the pressing plate 13 is completed by the height difference during rotation. A pressing column 15 is fixedly connected to the top end of the rotating plate 14. The pressing column 15 and the pressing plate 13 are pressed together. Reference Figure 1 and Figure 7 A stirring sleeve 16 is fixedly connected to the end of the drive shaft 4 that passes through the feed pipe 9. The stirring sleeve 16 is set to prevent the pulp from getting blocked in the feed pipe 9. It is important to note that the device is equipped with a forming mesh. The forming mesh is made of double-layer polyester material and is a custom-made 2400×1800mm mesh. It is designed with a 150-mesh warp (0.11mm diameter) and 120-mesh weft (0.13mm diameter) weave structure to control the air permeability at 600-650L / (m²・min). It takes into account both the interception of fine fibers and the dehydration efficiency. The surface of the forming mesh is coated with a polytetrafluoroethylene "anti-adhesion coating". The coating process was developed to reduce the adhesion of fine fibers and extend the service life of the forming mesh to 6 months. The device also optimizes the felt structure, designing a "three-layer interwoven felt" with a top layer of polyester staple fiber, a middle layer of nylon monofilament, and a bottom layer of polyester filament. The felt thickness is controlled at 3.5mm and the air permeability is 800-1000L / (m²・min), which enhances the adsorption capacity for fine fibers. A felt tension control system has also been developed to stabilize the tension at 18-20kN / m, ensuring that the felt running speed is synchronized with the forming net (error ≤0.5%), and preventing fiber misalignment and loss. The vacuum level of the adsorption roller is adjusted, and three vacuum zones are divided along the paper web direction. A gradient vacuum scheme is designed with -0.04MPa (initial adsorption) near the forming wire, -0.05MPa (deep adsorption) in the middle zone, and -0.06MPa (final adsorption) near the felt side to prevent useful fibers from being sucked away. "Honeycomb-shaped suction holes" (0.8mm in diameter and 2mm in spacing) are processed on the surface of the adsorption roller to optimize the distribution density of suction holes, improve the uniformity of adsorption, and ensure that the adsorption efficiency of fine fibers is ≥85%.

[0012] Working principle: When using this device, the driving force of the drive component 3 drives the transmission shaft 4. During the rotation of the transmission shaft 4, the filter component and the guide plate 5, which are fixedly connected to the transmission shaft 4 and located inside the pressure screen 1, rotate to complete the filtration of the pulp. At the same time, during the rotation of the transmission shaft 4, the rotating disk 14 rotates, driving the pressure column 15 to rotate. Since the rotating disk 14 is an inclined rotating disk, a height difference is formed, which causes the pressure column 13 to rhythmically push the filter component up and down. With the assistance of the elastic rod 11, the filter component is guaranteed to be reset. At the same time, the shaking prevents the fiber from clogging the filter holes. During the rotation of the transmission shaft 4, the stirring sleeve 16 is driven, so that the stirring sleeve 16 stirs the pulp at the feed pipe 9 to prevent the feed pipe 9 from being blocked.

[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral guide assembly for separating fine fibers of household paper, comprising a support base (2), wherein a drive assembly (3) is disposed within the support base (2), and a drive shaft (4) is fixedly connected to the drive end of the drive assembly (3), characterized in that: The drive shaft (4) passes through the pressure screen (1). A filter assembly is provided inside the pressure screen (1). Several guide plates (5) are fixedly connected to the outer surface of the filter assembly. The guide plates (5) are pressed against the inner surface of the pressure screen (1). The filter assembly is fixedly connected to the drive shaft (4). A feed pipe (9) is rotatably connected to the top of the filter assembly. The feed pipe (9) is connected to the feed inlet (10). A pressing component that presses against the filter assembly is provided at the bottom of the inner wall of the pressure screen (1).

2. The spiral guiding assembly for separating fine fibers of household paper according to claim 1, characterized in that: The filter assembly includes a filter plate one (6) fixedly connected to the drive shaft (4), a plurality of elastic rods (11) fixedly connected to the bottom of the filter plate one (6), a filter plate two (7) fixedly connected to the top of the filter plate one (6), and a filter plate three (8) fixedly connected to the top of the filter plate two (7).

3. The spiral guiding assembly for separating fine fibers of household paper according to claim 2, characterized in that: The filter plate (6) is a circular frame with 0.10 mm filter holes on its outer surface.

4. The spiral guiding assembly for separating fine fibers of household paper according to claim 2, characterized in that: The filter plate 2 (7) is a circular frame with 0.12mm filter holes on its outer surface.

5. The spiral guiding assembly for separating fine fibers of household paper according to claim 2, characterized in that: The filter plate three (8) is a circular frame with filter holes of 0.15mm on its outer surface.

6. The spiral guiding assembly for separating fine fibers of household paper according to claim 2, characterized in that: The pressure assembly includes a pressure plate (13) fixedly connected to the bottom end of the filter plate (6), the drive shaft (4) movably passes through the pressure plate (13), a protective shell (12) is fixedly connected to the bottom end of the pressure plate (13), a rotating disk (14) is provided inside the protective shell (12) and fixedly connected to the drive shaft (4), a pressure column (15) is fixedly connected to the top end of the rotating disk (14), and the pressure column (15) is in pressure engagement with the pressure plate (13).

7. The spiral guiding assembly for separating fine fibers of household paper according to claim 1, characterized in that: The end of the drive shaft (4) that passes through the feed pipe (9) is fixedly connected to a stirring sleeve (16).

8. The spiral guiding assembly for separating fine fibers of household paper according to claim 1, characterized in that: The guide plate (5) is a spiral guide plate with an arc.

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