A fiber separator for papermaking

Abstract

A papermaking fiber separator relates to the field of papermaking devices, which comprises a base, a pulp feeding pipe, a power assembly and a grinding assembly, the power assembly and the pulp feeding pipe are sequentially fixedly connected with the base, the pulp feeding pipe is connected with the grinding assembly, the pulp feeding pipe is internally provided with a self-adapting flow stabilizing and uniform distribution pulp feeding component, the self-adapting flow stabilizing and uniform distribution pulp feeding component comprises a rotating shaft, an auger, a sliding pipe, a limiting sliding block, a self-adapting pressure stabilizing assembly and a uniform distribution assembly, the rotating shaft is fixedly connected with the power assembly, the rotating shaft is fixedly connected with the grinding assembly, the auger is fixedly connected with the rotating shaft, the sliding pipe is slidingly connected with the rotating shaft, an axial limiting sliding groove is arranged on the inner wall of the sliding pipe, the limiting sliding block is fixedly connected with the rotating shaft, the limiting sliding block is slidingly connected with the axial limiting sliding groove, the uniform distribution assembly is connected with the inner wall of the pulp feeding pipe, the self-adapting pressure stabilizing assembly is connected with the pulp feeding pipe, and the beneficial effect is that the problem that pulp cannot be fully extruded and sheared due to excessive feeding flow is avoided, so that the sufficiency of fiber separation is improved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a fiber separator for papermaking. Background Technology

[0002] It is well known that in the papermaking industry, especially before producing certain types of paper such as fruit bag paper, fine fiber separation of wood pulp is required.

[0003] Chinese patent CN220927323U describes a fiber separator for papermaking, comprising a separator chamber, a drive shaft, a pulley, and an observation window. A cleaning mechanism is fixedly installed within the separator chamber at the observation window for cleaning the window. However, in actual use, the following problems still exist: Fiber separation involves applying intense compression, shearing, and friction to the pulp using a pulper. This process serves two purposes: first, it thoroughly separates cellulose and hemicellulose from impurities such as lignin and resin in the plant material; second, it breaks down and fluffs the fibers themselves, causing their surfaces to branch into numerous fine fibers, thus significantly increasing the specific surface area and binding force of the fibers. Actual production has shown that the stability of the feed flow rate and the uniformity of its circumferential distribution are crucial to the fiber separation effect. When the feed flow rate is too high, the residence time of the pulp in the grinding zone is too short, and the fibers cannot be sufficiently compressed and sheared, thus affecting the sufficiency of fiber splitting and fluffing, leading to a decrease in fiber separation efficiency. Simultaneously, as a solid-liquid two-phase mixture, the pulp is prone to uneven circumferential distribution during transport. When the flow rate is too low, this flow deviation phenomenon is exacerbated, resulting in uneven loads in different areas of the grinding disc. Consequently, some fibers are not effectively processed, affecting the uniformity of fiber separation.

[0004] Therefore, a fiber separator for papermaking is proposed. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a fiber separator for papermaking.

[0006] To achieve the aforementioned objective, this utility model adopts the following technical solution: A fiber separator for papermaking includes a base, a feed pipe, a power assembly, and a refining assembly. The fixed end of the power assembly is fixedly connected to the upper surface of the base. The outer wall of the feed pipe is fixedly connected to the base via a fastener. The end of the feed pipe away from the power assembly is connected to the fixed end of the refining assembly. An adaptive flow-stabilizing and uniform feed component is provided inside the feed pipe. This component includes a rotating shaft, an auger, a sliding tube, a limiting slider, an adaptive voltage stabilizing assembly, and a uniform distribution assembly. One end of the rotating shaft passes through the feed pipe and is fixedly connected to the output end of the power assembly. The rotating shaft is rotatably connected to the feed pipe. The other end of the rotating shaft is fixedly connected to the rotor of the refining assembly. The auger is fixedly connected to the outer wall of the rotating shaft. The sliding tube... The sliding tube is slidably connected to the rotating shaft between the auger and the pulping assembly. An axial limiting groove is provided on the inner wall of the sliding tube. Several limiting sliders are provided, and these sliders are evenly distributed circumferentially along the axis of the rotating shaft. One end of each limiting slider is fixedly connected to the rotating shaft, and the other end is slidably connected to the inner wall of the axial limiting groove. The movable end of the uniform distribution assembly is located between the auger and the pulping assembly and connected to the inner wall of the pulping tube. The fixed end of the uniform distribution assembly is connected to the outer wall of the sliding tube. The movable end of the adaptive pressure stabilizing assembly is located between the auger and the uniform distribution assembly and connected to the inner wall of the pulping tube. The fixed end of the adaptive pressure stabilizing assembly is connected to the outer wall of the sliding tube.

[0007] The adaptive voltage stabilizing component includes a first rotating ring and a flow stabilizer. The inner wall of the slurry pipe is provided with a first annular sliding groove. The outer wall of the first rotating ring is located in the first annular sliding groove and is slidably connected to the inner wall of the first annular sliding groove. The movable end of the flow stabilizer is connected to the inner wall of the first rotating ring, and the fixed end of the flow stabilizer is connected to the outer wall of the sliding pipe.

[0008] The flow stabilizer is provided in several parts and is evenly distributed circumferentially along the axis of the first rotating ring. The flow stabilizer includes a support tube, a support column, a spring, and a baffle plate. One end of the support tube is hinged to the inner wall of the first rotating ring by a pin. One end of the support column is located inside the support tube and is slidably connected to the inner wall of the support tube. The other end of the support column is hinged to the outer wall of the sliding tube by a pin. The spring is located inside the support tube. One end of the spring is fixedly connected to the end face of the support column. The other end of the spring is fixedly connected to the inner wall of the support tube away from the support column. The baffle plate is fixedly connected to the outer wall of the support tube.

[0009] The uniform distribution assembly includes a second rotating ring, a stirring column, stirring blades, and a transmission component. The inner wall of the slurry delivery pipe is provided with a second annular sliding groove. The outer wall of the second rotating ring is located in the second annular sliding groove and is slidably connected to the inner wall of the second annular sliding groove. One end of the stirring column is fixedly connected to the inner wall of the second rotating ring, and the other end of the stirring column is connected to the movable end of the transmission component. The fixed end of the transmission component is fixedly connected to the outer wall of the sliding pipe. The stirring blades are fixedly connected to the outer wall of the stirring column, and the stirring blades are inclinedly arranged on the stirring column.

[0010] The stirring columns are provided in a plurality of form, and the stirring columns are evenly distributed circumferentially along the axis of the second rotating ring.

[0011] The transmission component includes a first driven ring, a second driven ring, a first protrusion, and a second protrusion. The inner wall of the first driven ring is slidably connected to the outer wall of the sliding tube. One end of the stirring column is fixedly connected to the outer wall of the first driven ring. The inner wall of the second driven ring is located between the first driven ring and the grinding assembly and is fixedly connected to the outer wall of the sliding tube. The first protrusion is connected to the side of the first driven ring adjacent to the second driven ring. The second protrusion is connected to the side of the second driven ring adjacent to the first driven ring. The side of the first protrusion is in contact with the side of the second protrusion.

[0012] The baffle plate is inclinedly disposed on the outer wall of the support pipe.

[0013] Compared with the prior art, this utility model has the following beneficial effects: The rotation of the shaft drives the inclined baffle plate to rotate, stirring the slurry and avoiding the problem of uneven circumferential distribution of the solid and liquid phases in the slurry, which could lead to some fibers not being effectively processed, thus improving the uniformity of fiber processing; The linkage between the support pipe, support column, spring, and sliding pipe adaptively limits the slurry flow rate, avoiding the problem of insufficient residence time of the slurry in the grinding zone due to excessive feed flow, thus improving the sufficiency and uniformity of fiber separation; The transmission cooperation between the first and second protrusions activates stirring when the flow rate decreases, avoiding the problem of uneven circumferential distribution and flow deviation caused by reduced slurry flow rate, which could lead to some fibers not being effectively processed, thus improving the uniformity of the slurry entering the grinding zone and ensuring uniform fiber separation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the cross-sectional structure of the present invention; Figure 3 This is a three-dimensional structural diagram of the slurry delivery pipe of this utility model; Figure 4 This is a frontal cross-sectional view of the slurry delivery pipe of this utility model. Figure 5 This utility model Figure 2 A magnified structural diagram of point A is shown below; Figure 6 This utility model Figure 3 A magnified structural diagram of point B is shown.

[0015] 1. Base; 2. Pulp delivery pipe; 3. Power assembly; 4. Pulping assembly; 5. Rotating shaft; 6. Screwdriver; 7. Sliding pipe; 8. Limiting slider; 9. Axial limiting groove; 10. First rotating ring; 11. First annular sliding groove; 12. Support pipe; 13. Support column; 14. Spring; 15. Baffle plate; 16. Second rotating ring; 17. Stirring column; 18. Stirring blade; 19. Second annular sliding groove; 20. First driven ring; 21. Second driven ring; 22. First protrusion; 23. Second protrusion. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0017] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, in part of which will be obvious from the description or may be learned by practice of the invention.

[0018] like Figure 1-4As shown, a papermaking fiber separator includes a base 1, a pulp feeding pipe 2, a power assembly 3, and a refining assembly 4. The fixed end of the power assembly 3 is fixedly connected to the upper surface of the base 1. The outer wall of the pulp feeding pipe 2 is fixedly connected to the base 1 via a fastener. The end of the pulp feeding pipe 2 away from the power assembly 3 is connected to the fixed end of the refining assembly 4. An adaptive flow stabilization and uniform distribution pulp feeding component is provided inside the pulp feeding pipe 2. The adaptive flow stabilization and uniform distribution pulp feeding component includes a rotating shaft 5, an auger 6, a sliding pipe 7, a limiting slider 8, an adaptive pressure stabilization component, and a uniform distribution component. One end of the rotating shaft 5 passes through the pulp feeding pipe 2 and is fixedly connected to the output end of the power assembly 3. The rotating shaft 5 is rotatably connected to the pulp feeding pipe 2. The other end of the rotating shaft 5 is fixedly connected to the rotor of the refining assembly 4. The auger 6 is connected to the outer wall of the rotating shaft 5. The sliding tube 7 is located between the auger 6 and the grinding assembly 4 and is slidably connected to the rotating shaft 5. The inner wall of the sliding tube 7 is provided with an axial limiting groove 9. Several limiting sliders 8 are provided and are evenly distributed circumferentially along the axis of the rotating shaft 5. One end of the limiting slider 8 is fixedly connected to the rotating shaft 5, and the other end of the limiting slider 8 is located in the axial limiting groove 9 and is slidably connected to the inner wall of the axial limiting groove 9. The movable end of the uniform distribution assembly is located between the auger 6 and the grinding assembly 4 and is connected to the inner wall of the slurry delivery pipe 2. The fixed end of the uniform distribution assembly is connected to the outer wall of the sliding tube 7. The movable end of the adaptive pressure stabilizing assembly is located between the auger 6 and the uniform distribution assembly and is connected to the inner wall of the slurry delivery pipe 2. The fixed end of the adaptive pressure stabilizing assembly is connected to the outer wall of the sliding tube 7.

[0019] like Figure 2-3 As shown, the adaptive voltage stabilizing component includes a first rotating ring 10 and a flow stabilizer. The inner wall of the slurry pipe 2 is provided with a first annular sliding groove 11. The outer wall of the first rotating ring 10 is located in the first annular sliding groove 11 and is slidably connected to the inner wall of the first annular sliding groove 11. The movable end of the flow stabilizer is connected to the inner wall of the first rotating ring 10, and the fixed end of the flow stabilizer is connected to the outer wall of the sliding pipe 7.

[0020] like Figure 4-6 As shown, several flow stabilizers are provided, and the flow stabilizers are evenly distributed circumferentially along the axis of the first rotating ring 10. The flow stabilizer includes a support tube 12, a support column 13, a spring 14, and a baffle plate 15. One end of the support tube 12 is hinged to the inner wall of the first rotating ring 10 through a pin. One end of the support column 13 is located inside the support tube 12 and is slidably connected to the inner wall of the support tube 12. The other end of the support column 13 is hinged to the outer wall of the sliding tube 7 through a pin. The spring 14 is located inside the support tube 12. One end of the spring 14 is fixedly connected to the end face of the support column 13. The other end of the spring 14 is fixedly connected to the inner wall of the support tube 12 away from the support column 13. The baffle plate 15 is fixedly connected to the outer wall of the support tube 12.

[0021] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the uniform distribution assembly includes a second rotating ring 16, a stirring column 17, a stirring blade 18, and a transmission component. A second annular sliding groove 19 is provided on the inner wall of the slurry delivery pipe 2. The outer wall of the second rotating ring 16 is located inside the second annular sliding groove 19 and is slidably connected to the inner wall of the second annular sliding groove 19. One end of the stirring column 17 is fixedly connected to the inner wall of the second rotating ring 16, and the other end of the stirring column 17 is connected to the movable end of the transmission component. The fixed end of the transmission component is fixedly connected to the outer wall of the sliding pipe 7. The stirring blade 18 is fixedly connected to the outer wall of the stirring column 17, and the stirring blade 18 is inclinedly arranged on the stirring column 17.

[0022] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, there are several stirring columns 17, and the stirring columns 17 are evenly distributed circumferentially along the axis of the second rotating ring 16.

[0023] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the transmission component includes a first driven ring 20, a second driven ring 21, a first protrusion 22, and a second protrusion 23. The inner wall of the first driven ring 20 is slidably connected to the outer wall of the sliding tube 7. One end of the stirring column 17 is fixedly connected to the outer wall of the first driven ring 20. The inner wall of the second driven ring 21 is located between the first driven ring 20 and the grinding assembly 4 and is fixedly connected to the outer wall of the sliding tube 7. The first protrusion 22 is connected to the side of the first driven ring 20 adjacent to the side of the second driven ring 21. The second protrusion 23 is connected to the side of the second driven ring 21 adjacent to the side of the first driven ring 20. The side of the first protrusion 22 is in contact with the side of the second protrusion 23.

[0024] like Figure 4 As shown, the baffle plate 15 is inclinedly disposed on the outer wall of the support pipe 12.

[0025] The work process is as follows: S1. In use, the slurry requiring fiber separation is poured into the hopper on the slurry delivery pipe 2. The power unit 3 is started, driving the rotating shaft 5 to rotate inside the slurry delivery pipe 2. The auger 6 fixed on the rotating shaft 5 rotates synchronously, conveying the slurry from the feed inlet to the refining assembly 4. The refining assembly 4 separates the fibers from the slurry. The rotation of the rotating shaft 5 is transmitted to the sliding tube 7 through the circumferentially evenly distributed limiting sliders 8. Since the limiting sliders 8 are slidably connected in the axial limiting grooves 9 on the inner wall of the sliding tube 7, the sliding tube 7 rotates synchronously with the rotating shaft 5, while retaining the freedom of axial sliding. At this time, the slurry flow rate is stable and the grinding zone pressure is normal. The first rotating ring 10, the support pipe 12, the support column 13 and the baffle plate 15 fixed on the support pipe 12 are integrated as a whole and rotate around the rotating shaft 5 with the sliding pipe 7. The inclined baffle plate 15 stirs the slurry during the rotation process, achieving circumferential uniform distribution. The rotation of the rotating shaft 5 drives the inclined baffle plate 15 to rotate and stir the slurry, avoiding the problem of uneven circumferential distribution of the solid and liquid phases of the slurry, which leads to some fibers not being effectively treated, and improving the uniformity of fiber treatment.

[0026] S2, when the feed flow rate increases, the extrusion pressure of the slurry on the grinding zone of the grinding component 4 increases, and the high pressure is transmitted in the reverse direction to the end of the slurry delivery pipe 2. This pressure acts on the baffle plate 15, causing the pressure difference on both sides to decrease. At this time, the preload of the spring 14 is released, pulling the support column 13 to slide into the support tube 12. The support column 13 drives the sliding tube 7, which is hinged to it, to slide along the rotating shaft 5 towards the auger 6, thereby causing the support tube 12 to swing around its hinge point with the first rotating ring 10, and finally driving the baffle plate 15 to move radially inward, reducing the effective opening area of ​​the flow channel. Through the linkage of the support tube 12, support column 13, spring 14 and sliding tube 7, the slurry flow rate is adaptively limited, avoiding the problem that the slurry residence time in the grinding zone is too short due to excessive feed flow rate, and that it is not subjected to sufficient extrusion and shearing, thereby improving the sufficiency and uniformity of fiber splitting.

[0027] S3, when the flow channel opening decreases and the flow rate decreases, while the sliding tube 7 slides inward, the second driven ring 21 fixed to its outer wall moves axially synchronously. The side of the second protrusion 23 on the second driven ring 21 contacts and squeezes the side of the first protrusion 22 on the first driven ring 20. Since the first driven ring 20 is axially constrained on the slurry delivery pipe 2 through the stirring column 17 and the second rotating ring 16, this squeezing action is converted into torque, driving the first driven ring 20 to rotate relative to the sliding tube 7, and driving all the stirring columns 17 and the inclined stirring blades 18 to actively stir. Through the transmission cooperation of the first protrusion 22 and the second protrusion 23, stirring is started when the flow rate decreases, avoiding the problem of uneven circumferential distribution and flow deviation caused by the decrease in slurry flow rate, resulting in local fibers not being effectively processed, thereby improving the uniformity of the slurry entering the grinding zone and ensuring the uniformity of fiber separation.

[0028] S4. When the flow rate returns to normal, the pressure of the grinding assembly 4 returns to normal, and the pressure at the end of the slurry delivery pipe 2 also decreases. The thrust of the slurry flow on the baffle plate 15 increases, pushing the sliding pipe 7 to move outward. The entire device automatically returns to normal under the linkage of each component.

[0029] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A fiber separator for papermaking, comprising a base (1), a pulp feeding pipe (2), a power assembly (3), and a refining assembly (4), wherein the fixed end of the power assembly (3) is fixedly connected to the upper surface of the base (1), the outer wall of the pulp feeding pipe (2) is fixedly connected to the base (1) by a fastener, and one end of the pulp feeding pipe (2) away from the power assembly (3) is connected to the fixed end of the refining assembly (4), characterized in that: The slurry delivery pipe (2) is equipped with an adaptive flow stabilization and uniform slurry delivery component. The adaptive flow stabilization and uniform slurry delivery component includes a rotating shaft (5), an auger (6), a sliding tube (7), a limiting slider (8), an adaptive voltage stabilization component, and a uniform distribution component. One end of the rotating shaft (5) passes through the slurry delivery pipe (2) and is fixedly connected to the output end of the power component (3). The rotating shaft (5) is rotatably connected to the slurry delivery pipe (2). The other end of the rotating shaft (5) is fixedly connected to the rotor of the grinding component (4). The auger (6) is fixedly connected to the outer wall of the rotating shaft (5). The sliding tube (7) is located between the auger (6) and the grinding component (4) and is slidably connected to the rotating shaft (5). An axial limiting groove (9) is provided on the inner wall of the sliding tube (7). A plurality of sliders (8) are provided, and the limiting sliders (8) are evenly distributed circumferentially along the axis of the rotating shaft (5). One end of the limiting slider (8) is fixedly connected to the rotating shaft (5), and the other end of the limiting slider (8) is located in the axial limiting groove (9) and is slidably connected to the inner wall of the axial limiting groove (9). The movable end of the uniform distribution component is located between the auger (6) and the grinding component (4) and is connected to the inner wall of the slurry delivery pipe (2). The fixed end of the uniform distribution component is connected to the outer wall of the sliding pipe (7). The movable end of the adaptive pressure stabilizing component is located between the auger (6) and the uniform distribution component and is connected to the inner wall of the slurry delivery pipe (2). The fixed end of the adaptive pressure stabilizing component is connected to the outer wall of the sliding pipe (7).

2. The papermaking fiber separator according to claim 1, characterized in that: The adaptive voltage stabilizing component includes a first rotating ring (10) and a flow stabilizer. The inner wall of the slurry pipe (2) is provided with a first annular sliding groove (11). The outer wall of the first rotating ring (10) is located in the first annular sliding groove (11) and is slidably connected to the inner wall of the first annular sliding groove (11). The movable end of the flow stabilizer is connected to the inner wall of the first rotating ring (10), and the fixed end of the flow stabilizer is connected to the outer wall of the sliding pipe (7).

3. A fiber separator for papermaking according to claim 2, characterized in that: The flow stabilizer is provided in several parts and is evenly distributed around the axis of the first rotating ring (10). The flow stabilizer includes a support tube (12), a support column (13), a spring (14), and a baffle plate (15). One end of the support tube (12) is hinged to the inner wall of the first rotating ring (10) by a pin. One end of the support column (13) is located inside the support tube (12) and is slidably connected to the inner wall of the support tube (12). The other end of the support column (13) is hinged to the outer wall of the sliding tube (7) by a pin. The spring (14) is located inside the support tube (12). One end of the spring (14) is fixedly connected to the end face of the support column (13). The other end of the spring (14) is fixedly connected to the inner wall of the support tube (12) away from the support column (13). The baffle plate (15) is fixedly connected to the outer wall of the support tube (12).

4. A fiber separator for papermaking according to claim 3, characterized in that: The uniform distribution assembly includes a second rotating ring (16), a stirring column (17), a stirring blade (18), and a transmission component. The inner wall of the slurry delivery pipe (2) is provided with a second annular sliding groove (19). The outer wall of the second rotating ring (16) is located inside the second annular sliding groove (19) and is slidably connected to the inner wall of the second annular sliding groove (19). One end of the stirring column (17) is fixedly connected to the inner wall of the second rotating ring (16). The other end of the stirring column (17) is connected to the movable end of the transmission component. The fixed end of the transmission component is fixedly connected to the outer wall of the sliding pipe (7). The stirring blade (18) is fixedly connected to the outer wall of the stirring column (17), and the stirring blade (18) is inclinedly arranged on the stirring column (17).

5. A fiber separator for papermaking according to claim 4, characterized in that: The stirring column (17) is provided in a plurality of units, and the stirring column (17) is evenly distributed circumferentially along the axis of the second rotating ring (16).

6. A fiber separator for papermaking according to claim 4, characterized in that: The transmission component includes a first driven ring (20), a second driven ring (21), a first protrusion (22), and a second protrusion (23). The inner wall of the first driven ring (20) is slidably connected to the outer wall of the sliding tube (7). One end of the stirring column (17) is fixedly connected to the outer wall of the first driven ring (20). The inner wall of the second driven ring (21) is located between the first driven ring (20) and the grinding assembly (4) and is fixedly connected to the outer wall of the sliding tube (7). The first protrusion (22) is connected to the side of the first driven ring (20) adjacent to the second driven ring (21). The second protrusion (23) is connected to the side of the second driven ring (21) adjacent to the first driven ring (20). The side of the first protrusion (22) is in contact with the side of the second protrusion (23).

7. A fiber separator for papermaking according to claim 3, characterized in that: The baffle (15) is inclinedly disposed on the outer wall of the support pipe (12).

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