Low-loss fiber dispersing device

Abstract

The invention belongs to the field of fiber dispersion, and particularly discloses a low-loss fiber dispersion device which comprises a dispersion tank body, a turbulent flow mechanism and a dispersion mechanism, a cavity for placing glass fiber slurry is formed in the dispersing tank body and extends to the top of the dispersing tank body to form an opening; the turbulent flow mechanism comprises a first turbulent flow assembly, a second turbulent flow assembly and a third turbulent flow assembly which are sequentially arranged on the inner wall of the cavity at intervals from top to bottom. The dispersing mechanism is arranged at the bottom of the cavity and comprises a dispersing rotor and a driving part for driving the dispersing rotor to rotate. The glass fiber slurry can be dispersed through the turbulent flow mechanism and the dispersion mechanism, and under the structural design of the turbulent flow mechanism and the dispersion mechanism, glass fiber clusters interwoven in water can be subjected to wet dissociation, so that the glass fiber clusters are fully dispersed into single fibers, and meanwhile, damage to glass fibers in the dispersion process is reduced.

Description

Technical Field

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

[0002] In the process of preparing pure glass fiber or ventilation filter materials mainly composed of glass fiber, since the glass fiber raw materials are flocculated into clumps and are relatively brittle, when dispersing the glass fiber, it is necessary to disperse the fiber clumps into single fibers, and at the same time, it is required not to cut or minimize the cutting of the fibers.

[0003] Existing glass fiber dispersion usually uses a Volkswagen rotor for dispersing traditional plant fibers, which uses a blade structure with strong mechanical shear force. For plant fibers, the Volkswagen rotor can effectively damage the surface of plant fibers to achieve fiber separation and improve the hydrogen bonding force between plant fibers. However, during the dispersion of glass fibers, due to the high brittleness of glass fibers, the Volkswagen rotor is prone to cut too many fibers, resulting in low strength, poor air permeability, high resistance, poor filtration effect, and directly affecting the service life of the filter material made of glass fibers. Summary of the invention

[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 excessive cutting of glass fibers, thereby affecting the life and quality of the filter material.

[0005] The present application provides a fiber low-loss dispersion device, which specifically includes a dispersion tank body, a spoiler mechanism and a dispersion mechanism; a cavity for placing glass fiber slurry is opened inside the dispersion tank body and extends to the top of the dispersion tank body to form an opening; the spoiler mechanism includes a first spoiler component, a second spoiler component and a third spoiler component which are sequentially 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 includes a dispersion rotor and a driving member for driving the dispersion rotor to rotate.

[0006] Through the above technical scheme conceived by the present application, compared with the prior art, the dispersion rotor in the present application rotates under the driving action of the driving member, and can stir the glass fiber slurry in the cavity in the dispersion tank body, thereby forming a rotating vortex, so that the interwoven glass fiber clusters can be wet-dissociated. At the same time, more turbulence is formed in the glass fiber slurry through the first spoiler component, the second spoiler component and the third spoiler component, thereby enhancing the dispersing effect of water on the glass fiber, and can fully disperse the glass fiber clusters into single fibers, while reducing the beneficial effect of damage to the glass fiber during the dispersion process.

[0007] As a further preference, the dispersion mechanisms are provided in two groups and are symmetrically arranged on two sides of the cavity, and the dispersion rotors in the two groups of dispersion 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 speed 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 spoiler component includes a plurality of first spoiler protrusions, the second spoiler component includes a plurality of second spoiler protrusions, the third spoiler component includes a plurality of third spoiler protrusions, and the first spoiler protrusions, the second spoiler protrusions and the third spoiler 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 affected by the first spoiler protrusion, the second spoiler protrusion and the third spoiler 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 dispersion effect of water on the glass fiber.

[0011] As a further preference, the first spoiler protrusion, the second spoiler protrusion and the third spoiler protrusion are all hemispherical and their radii increase successively.

[0012] By adopting the above technical solution, since the glass fibers will sink due to the influence of gravity, so that the concentration of glass fibers below is higher than that above, the radius of the spoiler protrusion located below is larger than the radius of the spoiler protrusion located above, 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 further preferred, the dispersion rotor includes dispersion blades and a rotating shaft, the dispersion blades are fixedly connected to the output shaft of the driving member via the rotating shaft, and the dispersion blades, the rotating shaft and the output shaft of the driving member are located on the same axis.

[0014] By adopting the above technical solution, the dispersion fan blades are connected to the driving member through the rotating shaft, so that the driving member drives the dispersion fan blades to rotate through the rotating shaft, and the dispersion fan blades rotate stably, which is easy to control and adjust.

[0015] As further preferred, the dispersion fan blades include a central connecting member and a plurality of blades, wherein the plurality of blades are arranged around the circumference of the central connecting member and are fixedly connected to the central connecting member, and the central connecting member and the rotating shaft are detachably connected.

[0016] By adopting the above technical solution, the central connecting member and the rotating shaft are detachably connected, so that the dispersion blades can be easily disassembled and replaced to maintain a good stirring effect.

[0017] As a further preference, the angle between the rotation axis and the bottom surface of the cavity is 30°-45°.

[0018] By adopting the above technical solution, since the axis of the dispersion blades is the same as the rotation axis, when the dispersion blades rotate, 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 preference, each of the blades is provided with a plurality of spoiler strips arranged parallel to each other.

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

[0021] As a further preference, the outer periphery of the blade is arc-shaped and a plurality 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 micro-turbulence in the slurry, thereby quickly dissociating the glass fiber clusters and improving the fiber dispersion efficiency.

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

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

[0025] In general, the above technical solutions conceived by this application have the following technical advantages compared with the prior art: 1. In the present application, the dispersion rotor is driven to rotate by a driving member, so as to stir the glass fiber slurry in the cavity of the dispersion tank body, thereby forming a rotating vortex, so that the interwoven glass fiber clusters can be wet-dissociated, and the glass fiber clusters are dispersed under the action of water force. At the same time, more turbulence is formed in the glass fiber slurry through the first spoiler component, the second spoiler component and the third spoiler component, so as to enhance the dispersion effect of water force on the glass fiber, so that the glass fiber clusters can be fully dispersed into single fibers, and at the same time, the damage of the glass fiber during the dispersion process is reduced, so that the filter material formed subsequently has high strength and high air permeability.

[0026] 2. In the present application, two dispersing mechanisms are used, and the two dispersing rotors rotate in opposite directions, which not only stirs the glass fiber slurry, but also increases the speed difference between different flow layers, thereby generating a stronger hydraulic shearing effect, enhancing the glass fiber dispersing effect, and improving the glass fiber dispersing efficiency.

[0027] 3. In the present application, the flow disturbance protrusions on the inner wall of the cavity are used to form more turbulence in the glass fiber slurry fluid, thereby further enhancing the dispersion effect of the hydraulic force on the glass fiber. At the same time, the teeth on the blades help to form more high-intensity micro-turbulence, thereby quickly dissociating the glass fiber clusters without damaging the structure of the glass fiber.

[0028] 4. In the present application, since the radii of the first spoiler protrusion, the second spoiler protrusion and the third spoiler protrusion are different, different degrees of turbulence can be effectively formed according to the slurry concentration at different positions in the cavity, so that the glass fiber can be fully dispersed better and more effectively. At the same time, it can be suitable for the dispersion of glass fiber slurries of different concentrations, and has a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the top view of the dispersion tank body provided in an embodiment of the present application; Figure 2 yes Figure 1 Schematic diagram of the cross-section structure along line AA; Figure 3 It is a schematic diagram of the overall structure of the dispersion rotor provided in the embodiment of the present application.

[0030] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Dispersion tank body; 11. Cavity; 2. Spoiler mechanism; 21. First spoiler assembly; 211. First spoiler protrusion; 22. Second spoiler assembly; 221. Second spoiler protrusion; 23. Third spoiler assembly; 231. Third spoiler protrusion; 3. Dispersion mechanism; 31. Dispersion rotor; 311. Dispersion blades; 3111. Center connector; 3112. Blades; 3113. Spoiler strips; 3114. Teeth; 312. Rotating shaft; 32. Driving member. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] Reference Figure 1-3The present application discloses a fiber low-loss dispersion device comprising a dispersion tank body 1, a spoiler mechanism 2 and a dispersion mechanism 3; wherein the dispersion tank body 1 is a cylindrical structure, a cylindrical cavity 11 is provided inside the dispersion tank body 1 and the cavity 11 extends to the top of the dispersion tank body 1 to form a circular opening, and the glass fiber slurry to be dispersed can be placed in the cavity 11 when dispersing the glass fiber; the spoiler mechanism 2 comprises a first spoiler component 21, a second spoiler component 22 and a third spoiler component 23 which are sequentially arranged on the inner wall of the cavity 11 from top to bottom; the dispersion mechanism 3 is fixedly installed at the bottom of the cavity 11, and the dispersion mechanism 3 comprises a dispersion rotor 31 and a driving mechanism for driving the dispersion rotor 31 to rotate The component 32, the dispersion rotor 31 is made of 304 or 316 stainless steel or other corrosion-resistant materials, the driving component 32 drives the dispersion rotor 31 to rotate and stir the glass fiber slurry in the cavity 11, thereby forming a rotating vortex, so that the interwoven glass fiber group can be wet dissociated, and at the same time, more turbulence is formed in the glass fiber slurry through the first spoiler component 21, the second spoiler component 22 and the third spoiler component 23, and the dispersion effect of the water on the glass fiber is enhanced, so that the glass fiber group can be fully dispersed into a single fiber, and the speed of the dispersion rotor 31 is adjusted by controlling the driving component 32, and the speed adjustment range of the dispersion rotor 31 is 0-800 rpm. The present application breaks the limitation that the traditional dispersion device is adapted to a narrow concentration range, and can be used for dispersing fiber slurry from low concentration to high concentration, and is applicable to a wide concentration range.

[0033] In the present embodiment, two groups of dispersion mechanisms 3 are provided and symmetrically arranged on both sides of the cavity 11. Specifically, the two groups 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 groups of dispersion mechanisms 3 rotate in opposite directions, which can increase the speed difference between different flow layers while stirring the glass fiber slurry, thereby generating stronger hydraulic shearing action, enhancing the glass fiber dispersion effect, and improving the glass fiber dispersion efficiency.

[0034] Specifically, the dispersion rotor 31 includes a dispersion blade 311 and a rotating shaft 312. The dispersion blade 311 is fixedly connected to the output shaft of the driving member 32 through the rotating shaft 312. In this embodiment, the driving member 32 adopts a driving motor, which is fixedly installed on the outside of the dispersion tank body 1. The rotating shaft 312 penetrates the dispersion tank body 1 and is coaxially fixedly connected to the output shaft of the driving motor. The dispersion blade 311 is connected to the other end of the rotating shaft 312. A sealing member is provided between the rotating shaft 312 and the dispersion tank body 1. The dispersion blade 311, the rotating shaft 312 and the output shaft of the driving member 32 are connected to each other. The output shafts are located on the same axis. After the driving member 32 is started, the dispersion blades 311 can be driven to rotate through the rotating shaft 312, thereby achieving stirring and dispersing of the glass fiber slurry; wherein the rotating shaft 312 is inclined, and the angle between it and the bottom surface of the cavity 11 is 30°-45°, and the vertical distance from the bottom end of the rotating shaft 312 to the bottom end of the cavity 11 is 80mm-100mm. When the dispersion blades 311 rotate, the glass fiber slurry in the cavity 11 can form rotating vortices in both the horizontal and vertical directions, thereby improving the fiber dispersion efficiency and dispersion effect.

[0035] Furthermore, the dispersion fan blades 311 include a central connecting member 3111 and a plurality of blades 3112. The plurality of blades 3112 are arranged around the central connecting member 3111 and fixedly connected to the central connecting member 3111. The central connecting member 3111 and the rotating shaft 312 are detachably connected. When the rotating shaft 312 rotates, it can drive the central connecting member 3111 and the blades 3112 to rotate. The central connecting member 3111 and the rotating shaft 312 can be set to a threaded connection, and the two can be fixed by interlacing bolts. In this embodiment, the blades 3112 are set to 3 pieces with a thickness of 1.5mm-3mm. The maximum length of the blades 3112 corresponds to a circular diameter of 100mm-300mm. The three blades 3112 are spirally arranged with the rotating shaft 312 as the center.

[0036] Furthermore, the dispersion blades 311 also include some spoiler strips 3113. In this embodiment, each blade 3112 is fixedly connected to the side away from the rotation axis 312 with three spoiler strips 3113 arranged in parallel and spaced apart. The three spoiler strips 3113 have the same spacing, which is 20mm-60mm. Preferably, the spoiler strip 3113 located in the middle is arranged radially along the rotation axis 312, and the spoiler strips 3113 located on both sides are parallel to the spoiler strip 3113 in the middle. Figure 3As shown, when the blade 3112 rotates, the three spoiler strips 3113 can cause the glass fiber slurry to produce a high-intensity micro-turbulence effect, so that the dispersed glass fibers will not re-flocculate; in this embodiment, the cross-section of the spoiler strip 3113 is square, with a width of 3mm-8mm and a length of 50mm-80mm, and the spacing between the three spoiler strips 3113 is the same, which is 20mm-60mm. At the same time, the blade 3112 has a fan-shaped structure, and the outer periphery is arc-shaped and a number of teeth 3114 are evenly spaced on the arc surface. The teeth 3114 are arc-shaped tooth-like structures and are an integrally formed structure 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 micro-turbulence in the slurry, thereby quickly dissociating the glass fiber clusters, and the tooth 3114 structure will not damage the glass fiber, thereby improving the fiber dispersion efficiency and effectively protecting the glass fiber; the number of teeth 3114 evenly distributed on the edge of each blade 3112 is 25-30, and the diameter of the teeth 3114 is 1mm-3mm.

[0037] More specifically, the first spoiler assembly includes a plurality of first spoiler protrusions 211, the second spoiler assembly 22 includes a plurality of second spoiler protrusions 221, and the third spoiler assembly includes a plurality of third spoiler protrusions 231. The first spoiler protrusion 211, the second spoiler protrusion 221, and the third spoiler protrusion 231 are all arranged around the inner wall of the cavity 11. The first spoiler protrusion 211, the second spoiler protrusion 221, and the third spoiler protrusion 231 are provided with different numbers as needed. The first spoiler protrusion 211, the second spoiler protrusion 221, and the third spoiler protrusion 231 are all hemispherical and their radii increase successively. The cross-sectional diameter of the first spoiler protrusion 211 is 5 mm-10 mm. , 30-60 are provided, the cross-sectional diameter of the second spoiler protrusion 221 is 10mm-30mm, 10-50 are provided, the cross-sectional diameter of the third spoiler protrusion 231 is 30mm-50mm, 5-30 are provided; in this embodiment, the vertical distance between the center of the third spoiler protrusion 231 and the top of the cavity 11 is 0-800mm, the vertical distance between the center of the second spoiler protrusion 221 and the top of the cavity 11 is 0-500mm, the vertical distance between the center of the first spoiler protrusion 211 and the top of the cavity 11 is 0-300mm, and the dispersing rotor 31 in the dispersing mechanism 3 is located below the third spoiler protrusion 231. During the stirring process of the glass fiber slurry in the cavity 11, the first spoiler protrusion 211, the second spoiler protrusion 221 and the third spoiler protrusion 231 are acted upon, so that more turbulence can be continuously formed in the glass fiber slurry fluid, thereby further enhancing the dispersion effect of the hydraulic force on the glass fiber. At the same time, since the glass fiber will sink downward due to the influence of gravity, the concentration of the glass fiber below is higher than the concentration of the glass fiber above. Therefore, the radius of the spoiler protrusion located below is larger than the radius of the spoiler protrusion located above, which can effectively form different degrees of turbulence according to the slurry concentration at different positions in the cavity 11, thereby achieving better and more effective dispersion of the glass fiber.

[0038] When the dispersing device is used, a certain amount of glass fiber raw material and water are weighed in proportion and poured into the dispersing tank body 1 respectively. After setting the rotation speed of the driving member 32, the driving member 32 is started to drive the rotating shaft 312 and the dispersing blades 311 to rotate. The two dispersing rotors 31 with opposite rotation directions not only play a stirring role, but also increase the speed difference between different flow layers, thereby generating a stronger hydraulic shearing effect, improving the glass fiber dispersion efficiency and enhancing the glass fiber dispersion effect; the spoiler strips 3113 evenly distributed on the surface of each blade 3112 and the spoiler protrusions on the inner wall of the tank body make the fiber slurry fluid form more vortex flows, thereby further enhancing the hydraulic dispersion effect on the fiber; the edge of each blade 3112 is provided with a plurality of evenly distributed arc-shaped teeth 3114, which helps to form more high-intensity micro-turbulence, thereby efficiently dissociating the glass fiber clusters without damaging the structure of the glass fiber.

[0039] Embodiment 1: The amount of dispersion material and water accounts for 80%-90% of the volume of the cavity 11, and the mass ratio of glass fiber raw material to water is 1:20, and then poured into the cavity 11. After setting the speed of the dispersion rotor 31, the driving part 32 is started to drive the dispersion rotor 31 to rotate, and the blades 3112 stir the glass fiber raw material and water to disperse the glass fiber.

[0040] In this embodiment, the diameter of the cavity 11 is 400 mm and the height is 400 mm. The cross-sectional diameter of the third spoiler protrusions 23113 spaced apart on the inner wall of the cylinder is 33 mm, and the number is 5; the cross-sectional diameter of the second spoiler protrusions 22112 is 24 mm, and the number is 13; the cross-sectional diameter of the first spoiler protrusions 21111 is 8 mm, and the number is 39.

[0041] The vertical distance between the center of the third spoiler protrusion 231 and the top of the cavity 11 is 194 mm, the vertical distance between the center of the second spoiler protrusion 221 and the top of the cavity 11 is 111 mm, and the vertical distance between the center of the first spoiler protrusion 211 and the top of the cavity 11 is 61 mm.

[0042] Two dispersion rotors 31 are arranged in the cavity 11, and the two dispersion rotors 31 are symmetrically arranged. The rotation directions of the two dispersion rotors 31 are opposite, and the material of the dispersion rotors 31 is 304 stainless steel; each dispersion fan blade 311 includes three blades 3112, and the blades 3112 are spirally arranged with the rotating shaft 312 as the center. 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 blade 311 2 corresponds to a central angle of 90°, the blade 3112 is located below the third spoiler protrusion 231, and teeth 3114 are arranged at intervals on the arc side of the blade 3112. The teeth 3114 are in the shape of arc teeth 3114, there are 25 teeth 3114, and the diameter of the teeth 3114 is 2 mm; three spoiler strips 3113 are arranged at intervals on the side of the blade 3112 away from the rotation axis 312, the spoiler strips 3113 are rectangular parallelepiped, the width of the spoiler strips 3113 is 5 mm, the length of the spoiler strips 3113 is about 67 mm, and the spacing between the three spoiler strips 3113 is 40 mm.

[0043] The speed of the dispersion rotor 31 is adjusted by controlling the driving member 32. The speed adjustment range of the dispersion rotor 31 is 600 rpm, and the dispersion time is 10 min.

[0044] Embodiment 2: The amount of dispersion material and water accounts for 80%-90% of the volume of the cavity 11, and the mass ratio of glass fiber raw material to water is 1:10, and then poured into the cavity 11. After setting the speed of the dispersion rotor 31, the driving part 32 is started to drive the dispersion rotor 31 to rotate, and the blades 3112 stir the glass fiber raw material and water to disperse the glass fiber.

[0045] In this embodiment, the diameter of the cavity 11 is 800 mm and the height is 1600 mm. The cross-sectional diameter of the third spoiler protrusions 231 spaced apart on the inner wall of the cylinder is 25 mm, and the number is 20; the cross-sectional diameter of the second spoiler protrusions 221 is 15 mm, and the number is 33; the cross-sectional diameter of the first spoiler protrusions 211 is 5 mm, and the number is 50.

[0046] The vertical distance between the center of the third spoiler protrusion 231 and the top of the cavity 11 is 783 mm, the vertical distance between the center of the second spoiler protrusion 221 and the top of the cavity 11 is 450 mm, and the vertical distance between the center of the first spoiler protrusion 211 and the top of the cavity 11 is 250 mm.

[0047] Two dispersion rotors 31 are arranged in the cavity 11, and the two dispersion rotors 31 are symmetrically arranged. The rotation directions of the two dispersion rotors 31 are opposite, and the material of the dispersion rotors 31 is 304 stainless steel; each dispersion blade 311 includes three blades 3112, and the blades 3112 are spirally arranged with the rotating shaft 312 as the center. 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 blade 311 2 corresponds to a central angle of 90°, the blade 3112 is located below the third spoiler protrusion 231, and teeth 3114 are arranged at intervals on the arc side of the blade 3112. The teeth 3114 are in the shape of arc teeth 3114, there are 25 teeth 3114, and the diameter of the teeth 3114 is 2 mm; three spoiler strips 3113 are arranged at intervals on the side of the blade 3112 away from the rotation axis 312, the spoiler strips 3113 are rectangular parallelepiped, the width of the spoiler strips 3113 is 5 mm, the length of the spoiler strips 3113 is about 67 mm, and the spacing between the three spoiler strips 3113 is 40 mm.

[0048] The speed of the dispersion rotor 31 is adjusted by controlling the driving member 32. The speed adjustment range of the dispersion rotor 31 is 200 revolutions per minute, and the dispersion time is 10 minutes.

[0049] Embodiment 3: The amount of dispersion material and water accounts for 80%-90% of the volume of the cavity 11, and the mass ratio of glass fiber raw material to water is 1:5, and then poured into the cavity 11. After setting the speed of the dispersion rotor 31, the driving part 32 is started to drive the dispersion rotor 31 to rotate, and the blades 3112 stir the glass fiber raw material and water to disperse the glass fiber.

[0050] In this embodiment, the diameter of the cavity 11 is 600 mm and the height is 600 mm. The cross-sectional diameter of the third spoiler protrusions 231 spaced apart on the inner wall of the cylinder is 30 mm, and the number is 7; the cross-sectional diameter of the second spoiler protrusions 221 is 26 mm, and the number is 12; the cross-sectional diameter of the first spoiler protrusions 211 is 9 mm, and the number is 35.

[0051] The vertical distance between the center of the third spoiler protrusion 231 and the top of the cavity 11 is 280 mm, the vertical distance between the center of the second spoiler protrusion 221 and the top of the cavity 11 is 155 mm, and the vertical distance between the center of the first spoiler protrusion 211 and the top of the cavity 11 is 80 mm.

[0052] Two dispersion rotors 31 are arranged in the cavity 11, and the two dispersion rotors 31 are symmetrically arranged. The rotation directions of the two dispersion rotors 31 are opposite, and the material of the dispersion rotors 31 is 304 stainless steel; each dispersion fan blade 311 includes three blades 3112, and the blades 3112 are spirally arranged with the rotation axis 312 as the center. The vertical distance between the bottom end of the rotation axis 312 and the bottom of the cavity 11 is 87mm, and the angle between the rotation axis 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 blade 311 2 corresponds to a central angle of 80°, the blade 3112 is located below the third spoiler protrusion 231, and teeth 3114 are arranged at intervals on the arc side of the blade 3112. The teeth 3114 are in the shape of arc teeth 3114, there are 25 teeth 3114, and the diameter of the teeth 3114 is 2 mm; three spoiler strips 3113 are arranged at intervals on the side of the blade 3112 away from the rotation axis 312, the spoiler strips 3113 are rectangular parallelepiped, the width of the spoiler strips 3113 is 5 mm, the length of the spoiler strips 3113 is about 80 mm, and the spacing between the three spoiler strips 3113 is 48 mm.

[0053] The speed of the dispersion rotor 31 is adjusted by controlling the driving member 32. The speed adjustment range of the dispersion rotor 31 is 800 rpm, and the dispersion time is 10 min.

[0054] The following settings have control experimental groups: Control group 1 Other conditions are the same as those in the above embodiment, except that there is no flow-disturbing protrusion on the inner wall of the cavity.

[0055] Control group 2 Other conditions are the same as those of the above embodiment, except that only the middle part of the inner wall of the cavity has the spoiler protrusion.

[0056] Control group 3 Other conditions are the same as those in the above embodiment, except that there are no spoiler strips on the blade surface.

[0057] Control group 4 Other conditions are the same as the above embodiment, except that there are no teeth on the edge of the blade.

[0058] Control group 5 Other conditions are the same as the above embodiment, except that there is only one set of dispersion mechanisms.

[0059] Control group 6 Other conditions are the same as those in the above embodiment, except that the dispersion adopts a traditional Volkswagen rotor.

[0060] Control group 7 Other conditions are the same as the above embodiment, except that the blade edge is provided with triangular teeth.

[0061] The fiber beating degree and fiber length of Examples 1 to 3 and Control Experiment Groups 1 to 7 before and after dispersion were tested under the following test conditions: (1) Dispersion degree: visually check whether there are undispersed fibers; (2) Beating degree: According to the test standard: GB / T3332-2004; test instrument: beating degree tester, beating degree is related to fiber diameter and length. Under the same fiber diameter, beating degree can represent fiber length. If the fiber is cut by the blades during the dispersion process, the beating degree will increase, and the resistance of the filter material will also increase. This application is to ensure that the fiber will not be cut during the fiber dispersion process.

[0062] (3) Average fiber length: According to the test standard: GB / T10336-2002, the test instrument is: fiber length tester. For undispersed fibers, the beating degree after dispersion and the average fiber length are not tested.

[0063] The test results are shown in the chart below.

[0064] Test results table

[0065] It can be seen from Examples 1 to 3 in the table that 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, the original beating degree and fiber length of the fibers are not changed, and the fiber clusters can be effectively dispersed into single fibers.

[0066] Compared with Example 1, Control Experiment Group 1 and Control Experiment Group 2 lack spoiler protrusions or have fewer spoiler protrusions, which are difficult to achieve good dispersion effects; Compared with Example 1, Control Experiment Group 3 lacks spoiler strips, and Control Experiment Group 4 lacks arc-shaped teeth, which leads to poor fiber dispersion effects; In addition, Control Experiment Group 5 has only one set of impellers, and the dispersion effect is also poor. Control Experiment Group 1-Control Experiment Group 5 fully demonstrates that the spoiler protrusions, spoiler strips, arc-shaped teeth, and two sets of dispersion mechanisms with opposite rotation directions in the present application are very necessary and indispensable, and these innovative designs are conducive to improving the fiber dispersion effect.

[0067] It can be seen from control experimental group 1 and control experimental group 6 that control experimental group 6 uses the traditional Volkswagen rotor. Although it can fully disperse the fibers, it cuts more fibers, resulting in an increase in the beating degree and a decrease in the average fiber length.

[0068] It can be seen from control experiment group 1 and control experiment group 7 that the arc-shaped teeth of the present application will not damage the fibers, while the use of traditional triangular teeth in control experiment group 7 will damage the fibers, resulting in an increase in the beating degree and a decrease in the average fiber length.

[0069] In summary, through the structural design of the dispersion device of the present application, the glass fiber clusters can be fully dispersed into single fibers, while reducing the damage to the glass fibers during the dispersion process, so that the subsequently formed filter material has high strength and high air permeability.

[0070] It should be understood that expressions such as "include" and "may include" 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 "include" and / or "have" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components or combinations thereof.

[0071] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A fiber low-loss dispersion device, characterized in that: It comprises a dispersion tank body (1), a flow disturbance mechanism (2) and a dispersion mechanism (3); The dispersion tank body (1) is provided with 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 spoiler mechanism (2) comprises a first spoiler component (21), a second spoiler component (22) and a third spoiler component (23) which are sequentially arranged on the inner wall of the cavity (11) from top to bottom in an interval manner; The dispersion mechanism (3) is arranged at the bottom of the chamber (11), and comprises a dispersion rotor (31) and a driving member (32) for driving the dispersion rotor (31) to rotate.

2. A fiber low-loss dispersion device as claimed in claim 1, characterized in that: The dispersion mechanisms (3) are provided in two groups and are symmetrically arranged on both sides of the cavity (11); the dispersion rotors (31) in the two groups of dispersion mechanisms (3) rotate in opposite directions.

3. A fiber low-loss dispersion device as claimed in claim 1, characterized in that: The first spoiler component (21) includes a plurality of first spoiler protrusions (211), the second spoiler component (22) includes a plurality of second spoiler protrusions (221), and the third spoiler component (23) includes a plurality of third spoiler protrusions (231). The first spoiler protrusions (211), the second spoiler protrusions (221) and the third spoiler protrusions (231) are all arranged around the inner wall of the cavity (11).

4. A fiber low-loss dispersion device as claimed in claim 3, characterized in that: The first spoiler protrusion (211), the second spoiler protrusion (221) and the third spoiler protrusion (231) are all hemispherical in shape and their radii increase in sequence.

5. A fiber low-loss dispersion device as claimed in claim 1 or 2, characterized in that: The dispersion rotor (31) comprises dispersion blades (311) and a rotating shaft (312); the dispersion blades (311) are fixedly connected to an output shaft of a driving member (32) via the rotating shaft (312); and the dispersion blades (311), the rotating shaft (312) and the output shaft of the driving member (32) are located on the same axis.

6. A fiber low-loss dispersion device as claimed in claim 5, characterized in that: The dispersion fan blade (311) comprises a central connecting member (3111) and a plurality of blades (3112), wherein the plurality of blades (3112) are arranged around the circumference of the central connecting member (3111) and are fixedly connected to the central connecting member (3111), and the central connecting member (3111) and the rotating shaft (312) are detachably connected.

7. A fiber low-loss dispersion device as claimed in claim 5, characterized in that: The angle between the rotating shaft (312) and the bottom surface of the cavity (11) is 30°-45°.

8. A fiber low-loss dispersion device as claimed in claim 6, characterized in that: The blades (3112) are each provided with a plurality of spoiler strips (3113) arranged parallel to each other.

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

10. A fiber low-loss dispersion device as claimed in claim 9, characterized in that: The teeth (3114) are arc-shaped tooth-like structures.

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