Fiber low-loss dispersion device

Abstract

The application belongs to the field of fiber dispersion, and specifically discloses a low-loss fiber dispersion device, which comprises a dispersion tank body, a flow disturbance mechanism and a dispersion mechanism; the dispersion tank body is internally provided with a cavity for placing glass fiber slurry and extends to the top of the dispersion tank body to form an opening; the flow disturbance mechanism comprises a first flow disturbance component, a second flow disturbance component and a third flow disturbance component which are sequentially and spacedly arranged on the inner wall of the cavity from top to bottom; the dispersion mechanism is arranged at the bottom of the cavity and comprises a dispersion rotor and a driving member for driving the rotation of the dispersion rotor. The glass fiber slurry can be dispersed by the flow disturbance mechanism and the dispersion mechanism, and under the structural design of the flow disturbance mechanism and the dispersion mechanism, the glass fiber bundles interwoven in water can be wet dissociated, so that the glass fiber bundles can be fully dispersed into single fibers, and the damage of the glass fiber in the dispersion process can be reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of fiber dispersion, and more particularly relates to a low-loss fiber dispersion device. BACKGROUND

[0002] In the process of preparing pure glass fibers or glass fiber-based ventilation filter materials, because the glass fiber raw material flocculates into a cluster and has high brittleness, when the glass fibers are dispersed, the fiber cluster needs to be dispersed into single fibers, and it is required that the fibers are not cut or are cut as little as possible.

[0003] The existing glass fiber dispersion usually adopts a Vortex rotor for dispersing traditional plant fibers, and the rotor adopts a blade structure with strong mechanical shearing force. For plant fibers, the Vortex rotor can effectively damage the surface of the plant fibers to achieve fiber fanning and improve the hydrogen bond binding force between the plant fibers. However, in the process of dispersing glass fibers, because the glass fibers have high brittleness, the Vortex rotor is prone to cutting too many fibers, which leads to low strength, poor air permeability, high resistance, poor filtration effect of the filter material made of glass fibers, and directly affects the service life. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a low-loss fiber dispersion device, which aims to solve the problem that the existing fiber dispersion device easily causes too many glass fibers to be cut, thereby affecting the service life and quality of the filter material.

[0005] The low-loss fiber dispersion device provided by the present application specifically comprises a dispersion tank body, a turbulence mechanism and a dispersion mechanism; the dispersion tank body is internally provided with a cavity for placing glass fiber slurry and extends to the top of the dispersion tank body to form an opening; the turbulence mechanism comprises a first turbulence assembly, a second turbulence assembly and a third turbulence assembly which are sequentially and spacedly arranged on the inner wall of the cavity from top to bottom; the dispersion mechanism is arranged at the bottom of the cavity, and the dispersion mechanism comprises a dispersion rotor and a driving member for driving the rotation of the dispersion rotor.

[0006] Compared with the prior art, in the above technical scheme conceived by the present application, the dispersion rotor rotates under the driving action of the driving member, can stir the glass fiber slurry in the cavity in the dispersion tank body, thereby forming a rotating vortex flow, so that the interwoven glass fiber cluster can be wet dissociated, and more turbulent flow is formed in the glass fiber slurry by the first turbulence assembly, the second turbulence assembly and the third turbulence assembly, which enhances the dispersion effect of water power on the glass fibers, can achieve the beneficial effect of fully dispersing the glass fiber cluster into single fibers while reducing the damage to the glass fibers during the dispersion process.

[0007] As a further preferred embodiment, the dispersing mechanism is provided in two sets and symmetrically arranged on both sides of the cavity, and the dispersing rotors in the two sets of dispersing mechanisms rotate in opposite directions.

[0008] By adopting the above technical solution, the two dispersing rotors rotate in opposite directions, which not only stirs the glass fiber slurry, but also increases the velocity difference between different flow layers, thereby generating a stronger hydraulic shearing effect, enhancing the glass fiber dispersion effect, and improving the glass fiber dispersion efficiency.

[0009] As a further preferred embodiment, the first turbulence component includes a plurality of first turbulence protrusions, the second turbulence component includes a plurality of second turbulence protrusions, and the third turbulence component includes a plurality of third turbulence protrusions, wherein the first turbulence protrusions, the second turbulence protrusions, and the third turbulence protrusions are all arranged around the inner wall of the cavity.

[0010] By adopting the above technical solution, the glass fiber slurry can be continuously subjected to the first turbulence protrusion, the second turbulence protrusion and the third turbulence protrusion during the stirring process in the cavity, so that more turbulence can be continuously formed in the glass fiber slurry fluid, thereby further enhancing the hydraulic dispersion effect on the glass fiber.

[0011] As a further preferred embodiment, the first, second, and third turbulence protrusions are all hemispherical with their radii increasing sequentially.

[0012] By adopting the above technical solution, the glass fibers will sink downwards due to gravity, resulting in a higher glass fiber concentration at the bottom than at the top. Therefore, the radius of the turbulence protrusion at the bottom is larger than that at the top, which can effectively form different degrees of turbulence according to the slurry concentration at different positions in the cavity, thereby achieving better and more effective dispersion of the glass fibers.

[0013] As a further preferred embodiment, the dispersing rotor includes dispersing blades and a rotating shaft, wherein the dispersing blades are fixedly connected to the output shaft of the driving component via the rotating shaft, and the dispersing blades, the rotating shaft, and the output shaft of the driving component are located on the same axis.

[0014] By adopting the above technical solution, the dispersing fan blades are connected to the driving component via a rotating shaft, so that the driving component drives the dispersing fan blades to rotate via the rotating shaft. The dispersing fan blades rotate stably, which is easy to control and adjust.

[0015] As a further preferred embodiment, the dispersive fan blades include a central connector and a plurality of blades, the plurality of blades being arranged around the periphery of the central connector and fixedly connected to the central connector, and the central connector being detachably connected to the rotating shaft.

[0016] By adopting the above technical solution, the central connector and the rotating shaft are detachably connected, so as to facilitate the disassembly and replacement of the dispersing fan blades and maintain their good stirring effect.

[0017] As a further preferred embodiment, the angle between the rotating shaft and the bottom surface of the cavity is 30°-45°.

[0018] By adopting the above technical solution, since the axis of the dispersing fan blade is the same as the rotation axis, when the dispersing fan blade rotates, the glass fiber slurry in the cavity can form a rotating vortex in both the horizontal and vertical directions, thereby improving the fiber dispersion efficiency and dispersion effect.

[0019] As a further preferred embodiment, each blade is provided with a plurality of mutually parallel baffles.

[0020] By adopting the above technical solution, when the blades rotate, the turbulence strips can generate a high-intensity micro-turbulence effect in the glass fiber slurry, so that the dispersed glass fibers will not re-flocculate, thus improving the fiber dispersion effect.

[0021] As a further preferred embodiment, the outer periphery of the blade is arc-shaped and a number of teeth are evenly spaced on the arc surface.

[0022] By adopting the above technical solution, the setting of the teeth helps to form more high-intensity microturbulence in the slurry, thereby quickly disintegrating the glass fiber clusters and improving the fiber dispersion efficiency.

[0023] As a further preferred embodiment, the teeth are arc-shaped tooth-like structures.

[0024] By adopting the above technical solution, the structural design of the tooth will not damage the glass fiber, and effectively protects the glass fiber while improving the fiber dispersion efficiency.

[0025] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages:

[0026] 1. In this application, a driving component drives a dispersing rotor to rotate, thereby stirring the glass fiber slurry in the cavity of the dispersing tank body, thus forming a rotating vortex. This allows the interwoven glass fiber clusters to undergo wet dissociation, and the glass fiber clusters are dispersed under the action of water. At the same time, the first turbulence component, the second turbulence component, and the third turbulence component create more turbulence in the glass fiber slurry, enhancing the dispersing effect of water on the glass fibers. This fully disperses the glass fiber clusters into individual fibers, while reducing damage to the glass fibers during the dispersion process, resulting in a filter material with high strength and high air permeability.

[0027] 2. In this application, by employing two dispersion mechanisms with the two dispersion rotors rotating in opposite directions, not only is the glass fiber slurry stirred, but the velocity difference between different flow layers is also increased, thereby generating a stronger hydraulic shearing effect, enhancing the glass fiber dispersion effect, and improving the glass fiber dispersion efficiency.

[0028] 3. In this application, the turbulence protrusions on the inner wall of the cavity cause the glass fiber slurry fluid to form more turbulence, thereby further enhancing the hydraulic dispersion effect on the glass fiber. At the same time, the teeth on the blades help to form more high-intensity microturbulence, thereby quickly disintegrating the glass fiber clusters without damaging the structure of the glass fiber.

[0029] 4. In this application, since the radii of the first turbulence protrusion, the second turbulence protrusion and the third turbulence protrusion are different, different degrees of turbulence can be formed according to the slurry concentration at different positions in the cavity, thereby achieving better and more effective dispersion of glass fiber. At the same time, it can be applied to the dispersion of glass fiber slurry of different concentrations, and has a wider range of applications. Attached Figure Description

[0030] Figure 1 This is a top view of the dispersion tank body provided in an embodiment of this application;

[0031] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along line AA in the middle;

[0032] Figure 3 This is a schematic diagram of the overall structure of the distributed rotor provided in the embodiments of this application.

[0033] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0034] 1. Dispersion tank body; 11. Cavity; 2. Baffle mechanism; 21. First baffle assembly; 211. First baffle protrusion; 22. Second baffle assembly; 221. Second baffle protrusion; 23. Third baffle assembly; 231. Third baffle protrusion; 3. Dispersion mechanism; 31. Dispersion rotor; 311. Dispersion fan blade; 3111. Central connector; 3112. Blade; 3113. Baffle strip; 3114. Tooth; 312. Rotating shaft; 32. Drive component. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] Reference Figures 1-3This application discloses a low-loss fiber dispersion device comprising a dispersion tank body 1, a turbulence mechanism 2, and a dispersion mechanism 3. The dispersion tank body 1 has a cylindrical structure, with a cylindrical cavity 11 inside, extending to the top of the dispersion tank body 1 to form a circular opening. When dispersing glass fibers, the glass fiber slurry to be dispersed can be placed in the cavity 11. The turbulence mechanism 2 includes a first turbulence component 21, a second turbulence component 22, and a third turbulence component 23, arranged sequentially from top to bottom on the inner wall of the cavity 11. The dispersion mechanism 3 is fixedly installed at the bottom of the cavity 11 and includes a dispersion rotor 31 and a drive mechanism for driving the dispersion rotor 31 to rotate. The dispersing rotor 31, made of 304 or 316 stainless steel or other corrosion-resistant materials, is driven by the drive unit 32 to rotate and stir the glass fiber slurry in the cavity 11, thereby forming a rotating vortex. This allows the interwoven glass fiber clumps to undergo wet dissociation. Simultaneously, the first turbulence component 21, the second turbulence component 22, and the third turbulence component 23 create more turbulence in the glass fiber slurry, enhancing the hydraulic dispersion of the glass fibers. This effectively disperses the glass fiber clumps into individual fibers. The rotational speed of the dispersing rotor 31 is adjusted by controlling the drive unit 32, with a range of 0-800 rpm. This application overcomes the limitation of traditional dispersing devices having a narrow concentration range, and can be used for dispersing fiber slurries from low to high concentrations, thus having a wider applicable concentration range.

[0037] In this embodiment, two sets of dispersion mechanisms 3 are provided and symmetrically arranged on both sides of the cavity 11. Specifically, the two sets of dispersion mechanisms 3 are symmetrically distributed along the radial direction of the dispersion tank body 1. When dispersing the glass fiber slurry, the dispersion rotors 31 in the two sets of dispersion mechanisms 3 rotate in opposite directions. This can increase the velocity difference between different flow layers while stirring the glass fiber slurry, thereby generating a stronger hydraulic shearing effect, enhancing the glass fiber dispersion effect, and improving the glass fiber dispersion efficiency.

[0038] Specifically, the dispersing rotor 31 includes dispersing blades 311 and a rotating shaft 312. The dispersing blades 311 are fixedly connected to the output shaft of the drive unit 32 via the rotating shaft 312. In this embodiment, the drive unit 32 is a drive motor, which is fixedly installed outside the dispersing tank body 1. The rotating shaft 312 passes through the dispersing tank body 1 and is coaxially fixedly connected to the output shaft of the drive motor. The dispersing blades 311 are connected to the other end of the rotating shaft 312. A seal is provided between the rotating shaft 312 and the dispersing tank body 1. The dispersing blades 311, the rotating shaft 312, and the drive unit 32 are connected by a single shaft. The output shafts are located on the same axis. After the drive unit 32 is started, it can drive the dispersing fan blades 311 to rotate through the rotating shaft 312, thereby realizing the stirring and dispersion of glass fiber slurry. The rotating shaft 312 is inclined, and the angle between it and the bottom surface of the cavity 11 is 30°-45°. The vertical distance from the bottom of the rotating shaft 312 to the bottom of the cavity 11 is 80mm-100mm. When the dispersing fan blades 311 rotate, the glass fiber slurry in the cavity 11 can form a rotating vortex in both the horizontal and vertical directions, thereby improving the fiber dispersion efficiency and dispersion effect.

[0039] Furthermore, the dispersion fan blade 311 includes a central connector 3111 and several blades 3112. The blades 3112 are arranged around the central connector 3111 and fixedly connected to the central connector 3111. The central connector 3111 and the rotating shaft 312 are detachably connected. When the rotating shaft 312 rotates, it can drive the central connector 3111 and the blades 3112 to rotate. The central connector 3111 and the rotating shaft 312 can be set as a threaded connection, or they can be fixed by inserting bolts. In this embodiment, there are 3 blades 3112 with a thickness of 1.5mm-3mm. The maximum length of the blades 3112 corresponds to the diameter of the circle of 100mm-300mm. The 3 blades 3112 are spirally arranged with the rotating shaft 312 as the center.

[0040] Furthermore, the dispersion blade 311 also includes several flow deflectors 3113. In this embodiment, three parallel and spaced flow deflectors 3113 are fixedly connected to the side of each blade 3112 away from the rotation axis 312. The three flow deflectors 3113 are spaced at the same distance, with a spacing of 20mm-60mm. Preferably, the middle flow deflector 3113 is arranged radially along the rotation axis 312, and the flow deflectors 3113 on both sides are parallel to the middle flow deflector 3113. Specifically, as shown... Figure 3As shown, when the blade 3112 rotates, the three baffles 3113 can generate a high-intensity micro-turbulence effect in the glass fiber slurry, so that the dispersed glass fibers will not re-flocculate. In this embodiment, the cross-section of the baffles 3113 is square, with a width of 3mm-8mm and a length of 50mm-80mm. The three baffles 3113 are spaced at the same distance, with a spacing of 20mm-60mm. Meanwhile, the blade 3112 has a fan-shaped structure with an arc-shaped outer periphery and a number of teeth 3114 evenly spaced on the arc surface. The teeth 3114 are arc-shaped tooth-like structures and are integrally formed with the blade 3112. The diameter of the teeth 3114 is 1 / 100 of the diameter of the circle corresponding to the maximum length of the blade 3112. The setting of the teeth 3114 helps to form more high-intensity microturbulence in the slurry, thereby quickly disintegrating the glass fiber clusters. Moreover, the tooth 3114 structure will not damage the glass fiber, improving the fiber dispersion efficiency while effectively protecting the glass fiber. Each blade 3112 has 25-30 teeth 3114 evenly distributed on its edge, and the diameter of the teeth 3114 is 1mm-3mm.

[0041] More specifically, the first turbulence component includes several first turbulence protrusions 211, the second turbulence component 22 includes several second turbulence protrusions 221, and the third turbulence component includes several third turbulence protrusions 231. The first turbulence protrusions 211, 221, and 231 are all arranged around the inner wall of the cavity 11. The number of the first turbulence protrusions 211, 221, and 231 varies as needed. Each of the first turbulence protrusions 211, 221, and 231 is hemispherical with its radius increasing sequentially. The cross-sectional diameter of the first turbulence protrusion 211 is 5mm-10mm. The third turbulence protrusion 231 has a cross-sectional diameter of 30mm-50mm and is provided with 30-60 protrusions. In this embodiment, the vertical distance between the center of the third turbulence protrusion 231 and the top of the cavity 11 is 0-800mm, the vertical distance between the center of the second turbulence protrusion 221 and the top of the cavity 11 is 0-500mm, and the vertical distance between the center of the first turbulence protrusion 211 and the top of the cavity 11 is 0-300mm. The dispersing rotor 31 in the dispersing mechanism 3 is located below the third turbulence protrusion 231. During the stirring process within the cavity 11, the glass fiber slurry is subjected to the action of the first turbulence protrusion 211, the second turbulence protrusion 221, and the third turbulence protrusion 231, which continuously generate more turbulence within the glass fiber slurry fluid, thereby further enhancing the hydraulic dispersion effect on the glass fiber. Simultaneously, due to the influence of gravity, the glass fiber will sink downwards, resulting in a higher glass fiber concentration at the bottom than at the top. Therefore, the radius of the turbulence protrusion located at the bottom is larger than that located at the top, which can effectively generate different degrees of turbulence according to the slurry concentration at different positions within the cavity 11, thereby achieving better and more effective full dispersion of the glass fiber.

[0042] When using this dispersion device, a certain amount of glass fiber raw material and water are weighed according to the ratio and poured into the dispersion tank body 1. After setting the rotation speed of the drive component 32, the drive component 32 is started, driving the rotating shaft 312 and the dispersion fan blades 311 to rotate. The two dispersion rotors 31 rotating in opposite directions not only play a stirring role, but also increase the velocity difference between different flow layers, thereby generating a stronger hydraulic shearing effect, improving the dispersion efficiency of glass fiber, and enhancing the dispersion effect of glass fiber. The turbulence strips 3113 evenly distributed on the surface of each blade 3112, as well as the turbulence protrusions on the inner wall of the tank, make the fiber slurry fluid form more vortex flow, thereby further enhancing the hydraulic dispersion effect on the fiber. The edges of each blade 3112 are provided with several evenly distributed arc-shaped teeth 3114, which helps to form more high-intensity microturbulence, thereby efficiently dissociating the glass fiber clumps without damaging the structure of the glass fiber.

[0043] Example 1:

[0044] The amount of dispersing material and water accounts for 80%-90% of the volume of cavity 11. The mass ratio of glass fiber raw material to water is 1:20. Then, it is poured into cavity 11. After setting the speed of dispersing rotor 31, the drive component 32 is started to drive dispersing rotor 31 to rotate. Blades 3112 stir glass fiber raw material and water to disperse glass fiber.

[0045] In this embodiment, the cavity 11 has a diameter of 400mm and a height of 400mm. The third turbulence protrusion 23113, which is spaced apart on the inner wall of the cylinder, has a cross-sectional diameter of 33mm and a quantity of 5. The second turbulence protrusion 22112 has a cross-sectional diameter of 24mm and a quantity of 13. The first turbulence protrusion 21111 has a cross-sectional diameter of 8mm and a quantity of 39.

[0046] The vertical distance between the center of the third turbulence protrusion 231 and the top of the cavity 11 is 194 mm, the vertical distance between the center of the second turbulence protrusion 221 and the top of the cavity 11 is 111 mm, and the vertical distance between the center of the first turbulence protrusion 211 and the top of the cavity 11 is 61 mm.

[0047] Two dispersing rotors 31 are installed inside the cavity 11. The two dispersing rotors 31 are symmetrically arranged and rotate in opposite directions. The dispersing rotors 31 are made of 304 stainless steel. Each dispersing fan blade 311 includes three blades 3112, which are spirally arranged around the rotating shaft 312. The vertical distance between the bottom end of the rotating shaft 312 and the bottom of the cavity 11 is 66mm, and the angle between the rotating shaft 312 and the bottom surface of the cavity 11 is 45°. The thickness of the blade 3112 is 2mm, and the diameter of the circle corresponding to the blade 3112 is 200mm. The corresponding central angle of 2 is 90°. The blade 3112 is located below the third turbulence protrusion 231. The arc-shaped edge of the blade 3112 is provided with teeth 3114 at intervals. The teeth 3114 are arc-shaped and there are 25 teeth 3114. The diameter of the teeth 3114 is 2mm. The side of the blade 3112 away from the rotation axis 312 is provided with three turbulence strips 3113 at intervals. The turbulence strips 3113 are cuboids. The width of the turbulence strips 3113 is 5mm and the length of the turbulence strips 3113 is about 67mm. The distance between the three turbulence strips 3113 is 40mm.

[0048] The speed of the dispersing rotor 31 is adjusted by controlling the drive component 32. The speed adjustment range of the dispersing rotor 31 is 600 rpm, and the dispersing time is 10 min.

[0049] Example 2:

[0050] The amount of dispersing material and water accounts for 80%-90% of the volume of cavity 11. The mass ratio of glass fiber raw material to water is 1:10. Then, it is poured into cavity 11. After setting the speed of dispersing rotor 31, the drive component 32 is started to drive dispersing rotor 31 to rotate. Blades 3112 stir glass fiber raw material and water to disperse glass fiber.

[0051] In this embodiment, the cavity 11 has a diameter of 800mm and a height of 1600mm. The third turbulence protrusion 231, which is spaced apart on the inner wall of the cylinder, has a cross-sectional diameter of 25mm and a quantity of 20. The second turbulence protrusion 221 has a cross-sectional diameter of 15mm and a quantity of 33. The first turbulence protrusion 211 has a cross-sectional diameter of 5mm and a quantity of 50.

[0052] The vertical distance between the center of the third turbulence protrusion 231 and the top of the cavity 11 is 783mm, the vertical distance between the center of the second turbulence protrusion 221 and the top of the cavity 11 is 450mm, and the vertical distance between the center of the first turbulence protrusion 211 and the top of the cavity 11 is 250mm.

[0053] Two dispersing rotors 31 are installed inside the cavity 11. The two dispersing rotors 31 are symmetrically arranged and rotate in opposite directions. The dispersing rotors 31 are made of 304 stainless steel. Each dispersing fan blade 311 includes three blades 3112, which are spirally arranged around the rotating shaft 312. The vertical distance between the bottom end of the rotating shaft 312 and the bottom of the cavity 11 is 272mm, and the angle between the rotating shaft 312 and the bottom surface of the cavity 11 is 45°. The thickness of the blade 3112 is 2mm, and the diameter of the circle corresponding to the blade 3112 is 200mm. The corresponding central angle of 2 is 90°. The blade 3112 is located below the third turbulence protrusion 231. The arc-shaped edge of the blade 3112 is provided with teeth 3114 at intervals. The teeth 3114 are arc-shaped and there are 25 teeth 3114. The diameter of the teeth 3114 is 2mm. The side of the blade 3112 away from the rotation axis 312 is provided with three turbulence strips 3113 at intervals. The turbulence strips 3113 are cuboids. The width of the turbulence strips 3113 is 5mm and the length of the turbulence strips 3113 is about 67mm. The distance between the three turbulence strips 3113 is 40mm.

[0054] The speed of the dispersing rotor 31 is adjusted by controlling the drive component 32. The speed adjustment range of the dispersing rotor 31 is 200 rpm, and the dispersing time is 10 min.

[0055] Example 3:

[0056] The amount of dispersing material and water accounts for 80%-90% of the volume of cavity 11. The mass ratio of glass fiber raw material to water is 1:5. Then, it is poured into cavity 11. After setting the speed of dispersing rotor 31, the drive component 32 is started to drive dispersing rotor 31 to rotate. Blades 3112 stir glass fiber raw material and water to disperse glass fiber.

[0057] In this embodiment, the cavity 11 has a diameter of 600mm and a height of 600mm. The third turbulence protrusion 231, which is spaced apart on the inner wall of the cylinder, has a cross-sectional diameter of 30mm and a quantity of 7. The second turbulence protrusion 221 has a cross-sectional diameter of 26mm and a quantity of 12. The first turbulence protrusion 211 has a cross-sectional diameter of 9mm and a quantity of 35.

[0058] The vertical distance between the center of the third turbulence protrusion 231 and the top of the cavity 11 is 280mm, the vertical distance between the center of the second turbulence protrusion 221 and the top of the cavity 11 is 155mm, and the vertical distance between the center of the first turbulence protrusion 211 and the top of the cavity 11 is 80mm.

[0059] Two dispersing rotors 31 are installed inside the cavity 11. The two dispersing rotors 31 are symmetrically arranged and rotate in opposite directions. The dispersing rotors 31 are made of 304 stainless steel. Each dispersing fan blade 311 includes three blades 3112, which are spirally arranged around the rotating shaft 312. The vertical distance between the bottom end of the rotating shaft 312 and the bottom of the cavity 11 is 87mm, and the angle between the rotating shaft 312 and the bottom surface of the cavity 11 is 30°. The thickness of the blade 3112 is 2mm, and the diameter of the circle corresponding to the blade 3112 is 240mm. The corresponding central angle of 2 is 80°. The blade 3112 is located below the third turbulence protrusion 231. The arc-shaped edge of the blade 3112 is provided with teeth 3114 at intervals. The teeth 3114 are arc-shaped and there are 25 teeth 3114. The diameter of the teeth 3114 is 2mm. The side of the blade 3112 away from the rotation axis 312 is provided with three turbulence strips 3113 at intervals. The turbulence strips 3113 are cuboids. The width of the turbulence strips 3113 is 5mm and the length of the turbulence strips 3113 is about 80mm. The distance between the three turbulence strips 3113 is 48mm.

[0060] The speed of the dispersing rotor 31 is adjusted by controlling the drive component 32. The speed adjustment range of the dispersing rotor 31 is 800 rpm, and the dispersing time is 10 min.

[0061] The following control group was set up:

[0062] Control group 1

[0063] Other conditions are the same as in the above embodiments, except that there are no turbulent protrusions on the inner wall of the cavity.

[0064] Control group 2

[0065] Other conditions are the same as in the above embodiments, except that there is a turbulence protrusion only in the middle of the inner wall of the cavity.

[0066] Control group 3

[0067] The other conditions are the same as in the above embodiments, except that there are no turbulence strips on the blade surface.

[0068] Control group 4

[0069] The other conditions are the same as in the above embodiments, except that there are no teeth on the edge of the blade.

[0070] Control group 5

[0071] The other conditions are the same as in the above embodiments, except that there is only one set of distributed mechanisms.

[0072] Control group 6

[0073] Other conditions are the same as in the above embodiments, except that a conventional voltaic rotor is used in a distributed manner.

[0074] Control group 7

[0075] Other conditions are the same as in the above embodiments, except that the blade edge has triangular teeth.

[0076] The fiber freeness and fiber length before and after dispersion were tested for Examples 1 to 3 and Control Experiments 1 to 7, under the following conditions:

[0077] (1) Degree of dispersion: Visually inspect for undispersed fibers;

[0078] (2) Freezing degree: According to the test standard: GB / T3332-2004; test instrument: freezing degree tester. Freezing degree is related to fiber diameter and length. Under the same fiber diameter, freezing degree can characterize fiber length. If the fiber is cut by the blade during dispersion, the freezing degree will increase, and the resistance of the filter material will also increase. This application aims to ensure that the fiber is not cut during the fiber dispersion process.

[0079] (3) Average fiber length: According to the test standard: GB / T10336-2002, the test instrument is fiber length tester. For undispersed fibers, the freeness after dispersion and the average fiber length are not tested.

[0080] The test results are shown in the chart below.

[0081] Test Result Table

[0082]

[0083] As can be seen from Examples 1-3 in the table, the dispersion device configured according to the present application has a good dispersion effect when dispersing glass fibers of different concentrations. Under the same dispersion conditions, without changing the original beating degree and fiber length of the fiber, it can effectively disperse the fiber clump into individual fibers.

[0084] Compared with Example 1, Control Experiment Groups 1 and 2, lacking or having only a few turbulence protrusions, failed to achieve good dispersion. Control Experiment Group 3, lacking turbulence strips, and Control Experiment Group 4, lacking arc-shaped teeth, also resulted in poor fiber dispersion. Furthermore, Control Experiment Group 5, with only one impeller, also exhibited poor dispersion. These Control Experiment Groups 1 through 5 clearly demonstrate that the inclusion of turbulence protrusions, turbulence strips, arc-shaped teeth, and two sets of dispersion mechanisms rotating in opposite directions are essential and indispensable in this application. These innovative designs contribute to improving fiber dispersion.

[0085] As can be seen from control group 1 and control group 6, control group 6 used a traditional Voges rotor, which can fully disperse the fibers, but it cuts the fibers more, resulting in increased freeness and decreased average fiber length.

[0086] As can be seen from control group 1 and control group 7, the arc-shaped teeth of this application do not damage the fibers, while the traditional triangular teeth used in control group 7 will damage the fibers, resulting in increased freeness and decreased average fiber length.

[0087] In summary, the structural design of the dispersion device in this application can effectively disperse glass fiber clusters into individual fibers while reducing damage to the glass fibers during the dispersion process, resulting in high strength and high air permeability of the subsequently formed filter material.

[0088] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0089] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0091] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0092] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fiber low-loss dispersion device, characterized in that, It includes a dispersion tank body (1), a flow disturbance mechanism (2), and a dispersion mechanism (3); The dispersion tank body (1) has a cavity (11) for placing glass fiber slurry inside and extends to the top of the dispersion tank body (1) to form an opening; The turbulence mechanism (2) includes a first turbulence component (21), a second turbulence component (22) and a third turbulence component (23) arranged sequentially from top to bottom on the inner wall of the cavity (11); The dispersing mechanism (3) is located at the bottom of the cavity (11). The dispersing mechanism (3) includes a dispersing rotor (31) and a driving member (32) for driving the dispersing rotor (31) to rotate. The first turbulence component (21) includes a plurality of first turbulence protrusions (211), the second turbulence component (22) includes a plurality of second turbulence protrusions (221), and the third turbulence component (23) includes a plurality of third turbulence protrusions (231). The first turbulence protrusions (211), the second turbulence protrusions (221), and the third turbulence protrusions (231) are all arranged around the inner wall of the cavity (11). The first turbulence protrusion (211), the second turbulence protrusion (221) and the third turbulence protrusion (231) are all hemispherical and their radii increase sequentially. The dispersing rotor (31) includes dispersing fan blades (311) and a rotating shaft (312). The dispersing fan blades (311) are fixedly connected to the output shaft of the driving member (32) via the rotating shaft (312). The dispersing fan blades (311), the rotating shaft (312), and the output shaft of the driving member (32) are located on the same axis. The dispersion fan blade (311) includes a central connector (3111) and a plurality of blades (3112). The plurality of blades (3112) are arranged around the periphery of the central connector (3111) and are fixedly connected to the central connector (3111). The central connector (3111) and the rotating shaft (312) are detachably connected. Each blade (3112) is provided with several mutually parallel baffles (3113).

2. The fiber low-loss dispersion device as described in claim 1, characterized in that, The dispersing mechanism (3) is provided in two sets and symmetrically arranged on both sides of the cavity (11), and the dispersing rotors (31) in the two sets of dispersing mechanisms (3) rotate in opposite directions.

3. The fiber low-loss dispersion device as described in claim 1, characterized in that, The angle between the rotating shaft (312) and the bottom surface of the cavity (11) is 30°-45°.

4. The fiber low-loss dispersion device as described in claim 1, characterized in that, The outer periphery of the blade (3112) is arc-shaped and a number of teeth (3114) are evenly spaced on the arc surface.

5. The fiber low-loss dispersion device as described in claim 4, characterized in that, The tooth (3114) is an arc-shaped tooth-like structure.

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