High-frequency fluffer

Abstract

The invention discloses a high-frequency fluffer which comprises a machine shell, a front cover, a fluffing device and a transmission device. The defibering device comprises a fixed disc assembly and a movable disc assembly. The fixed disc assembly comprises an annular inner fixed disc, an annular first-stage middle fixed disc, an annular second-stage middle fixed disc and an annular outer fixed disc. The movable disc assembly comprises an annular inner movable disc, an annular first-stage middle movable disc, an annular second-stage middle movable disc and an annular outer movable disc; the transmission device comprises a motor, a transmission shaft and a rotating disc, a boss and a key groove are arranged on the two opposite faces of the rotating disc respectively, the rotating shaft drives the rotating disc and the movable disc assembly to rotate together, the feeding port is communicated with an inner hole of the inner fixed disc, and a discharging port is formed in the upper portion of the machine shell. According to the high-frequency fluffer provided by the invention, the chopped fibers subjected to heat treatment can be well and uniformly dispersed, so that the aramid fiber III chopped fibers can be better contacted and combined in a paper forming process, and the uniformity, the surface smoothness and the physical strength of finished paper are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of defibrator, more particularly, to a high-frequency defibrator. BACKGROUND

[0002] Honeycomb sandwich structure is one of the key structural forms in the field of paper-based composites, which can effectively improve the specific stiffness of the structure and is widely used in aerospace, rail transportation and military equipment fields. Aramid paper honeycomb is one of the preferred core materials for weight reduction of composite sandwich structures. Aramid paper honeycomb core material can be prepared after gluing, laminating, pressing, cutting, stretching, shaping, impregnating and curing, and has a natural honeycomb hexagonal structure. The sandwich structure prepared therefrom has the characteristics of light weight, high specific strength and specific stiffness, sound and heat insulation, weather resistance, high temperature stability, electromagnetic wave transmission and the like. Aramid fiber is the main raw material for preparing aramid paper, which can be roughly divided into wholly aromatic polyamide fiber and heterocyclic aromatic polyamide fiber according to the molecular structure. The fibers that have been industrialized in the wholly aromatic polyamide fiber mainly include para-aramid and meta-aramid. Heterocyclic aromatic polyamide fiber refers to fiber containing N, O, S and other heterocyclic structures, also known as heterocyclic aramid or aramid III fiber. Domestic aramid III fiber introduces benzimidazole heterocyclic structure (2-(4-aminophenyl)-5-aminobenzimidazole) into the molecular chain of para-aramid, and the paper-based honeycomb made of aramid III has great potential in the application of lightweight structure.

[0003] Aramid III fiber has inert surface and is extremely hydrophobic, which is completely different from the characteristics of traditional plant fiber surface containing a large number of hydroxyl groups and good hydrophilicity. In addition, high-performance fibers are longer than traditional plant raw fibers, with the length of traditional plant fibers being 1-2 mm, while the length of aramid III fibers for honeycomb is usually more than 6 mm. The above factors cause the crowding factor of fibers in water medium to increase sharply, which further leads to the deterioration of fiber dispersion. At the same time, due to the serious adhesion between single filaments of aramid III fiber after heat treatment, the splitting property is poor. After cutting, the filaments are difficult to separate. The above problems can easily lead to low fiber dispersion, uneven paper and poor mechanical properties, thereby affecting the performance of paper-based honeycomb.

[0004] From the point of view of papermaking pulping process, it is desired that the pulp fibers are treated to be fine, soft and relatively long, that is, the pulp fibers are fully disintegrated and then refined to be fine. Therefore, the target of defibration is to disintegrate the fiber bundles or paper sheets into single and wet fibers. At present, the basic defibration machine in production is the high-speed refiner type, only the tooth pattern is relatively rough and the defibration gap between the teeth is wide, so that the defibration treatment does not occur like the refiner. Generally, the defibration gap is 0.5mm (the refining gap is about 100μm) and the peripheral linear velocity is about 40m / s. When the fibers pass through the defibration machine teeth, the force generated by high-speed rotation is used to defibrate with the multiple teeth, and the pulp material repeatedly impacts and rubs when passing through the dynamic disc and static disc. Under the action of high-frequency mechanical and hydraulic force, the fiber bundles are dispersed into single fibers to realize dispersion defibration.

[0005] Although the existing high-frequency defibration machine can increase the defibration efficiency, it still has deficiencies in dispersing the fibers after hot treatment and adhesion. If the rotating speed of the defibration machine is too low, the defibration will not be complete and the fibers will not be uniformly dispersed. If the rotating speed is too high, the fibers will be broken, which affects the performance of the fibers and finally reduces the performance of the paper-based composite material. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a high-frequency defibration machine to ensure that the short fibers after hot treatment can be well and uniformly dispersed, which helps the aramid III short fibers to better contact and combine in the papermaking process, and improves the uniformity, surface smoothness and physical strength of the paper.

[0007] Based on the above purpose, the present application provides a high frequency defibrator, comprising a casing, a front cover, a defibrator, a transmission device, wherein: the defibrator is arranged in the casing; the defibrator comprises a fixed disc assembly and a moving disc assembly, the fixed disc assembly comprises an annular inner fixed disc, an annular first middle fixed disc, an annular second middle fixed disc and an annular outer fixed disc, the inner fixed disc is provided with an inner fixed flange and a plurality of inner fixed teeth, the plurality of inner fixed teeth are arranged on the end face of the inner fixed flange, the first middle fixed disc is provided with a first middle fixed flange and a plurality of first middle fixed teeth, the plurality of first middle fixed teeth are arranged on the end face of the first middle fixed flange, the second middle fixed disc is provided with a second middle fixed flange and a plurality of second middle fixed teeth, the plurality of second middle fixed teeth are arranged on the end face of the second middle fixed flange, the outer fixed disc is provided with a plurality of outer fixed teeth, the plurality of outer fixed teeth are arranged on the end face of the outer fixed disc, the inner hole of the first middle fixed disc is fittedly installed on the outer peripheral surface of the inner fixed flange, the inner hole of the second middle fixed disc is fittedly installed on the outer peripheral surface of the first middle fixed flange, and the inner hole of the outer fixed disc is fittedly installed on the outer peripheral surface of the second middle fixed flange; the moving disc assembly comprises an annular inner moving disc, an annular first middle moving disc, an annular second middle moving disc and an annular outer moving disc, the inner moving disc is provided with an inner moving flange and a plurality of inner moving teeth, the plurality of inner moving teeth are arranged on the end face of the inner moving flange, the first middle moving disc is provided with a first middle moving flange and a plurality of first middle moving teeth, the plurality of first middle moving teeth are arranged on the end face of the first middle moving flange, the second middle moving disc is provided with a second middle moving flange and a plurality of second middle moving teeth, the plurality of second middle moving teeth are arranged on the end face of the second middle moving flange, and the outer moving disc is provided with a plurality of outer moving teeth, the plurality of outer moving teeth are arranged on the end face of the outer moving disc; the transmission device comprises a motor, a transmission shaft and a rotating disc, two surfaces of the rotating disc are provided with a boss and a key groove respectively, the transmission shaft is installed on the key groove, the boss is fitted on the inner hole of the inner moving disc, the fixed disc assembly is installed on the front cover, the front cover is installed on the casing, the moving disc assembly is installed on the rotating disc, when the motor drives the transmission shaft to rotate, the rotating shaft drives the rotating disc and the moving disc assembly to rotate together, the front cover is provided with a feeding port for inputting slurry, the feeding port is communicated with the inner hole of the inner fixed disc, and the casing is provided with a discharging port above for outputting slurry.

[0008] Optionally, the tooth side surface of the inner fixed tooth is arranged opposite to the end face of the inner moving flange, and has a first gap, the tooth side surface of the first middle fixed tooth is arranged opposite to the end face of the first middle moving flange, and has a second gap, and the tooth side surface of the second middle fixed tooth is arranged opposite to the end face of the second middle moving flange, and has a third gap.

[0009] Optionally, the first gap, the second gap and the third gap are all 0.5-1mm.

[0010] Optionally, the tooth shapes of the inner fixed teeth, the first-level middle fixed teeth, the second-level middle fixed teeth, the outer fixed teeth, the inner movable teeth, the first-level middle movable teeth, the second-level middle movable teeth and the outer movable teeth are all circular arc teeth.

[0011] Optionally, the number of the inner fixed teeth is 15, the number of the inner movable teeth is 13; the number of the first-level middle fixed teeth is 27, the number of the first-level middle movable teeth is 17; the number of the second-level middle fixed teeth is 27, the number of the second-level middle movable teeth is 23; the number of the outer fixed teeth is 40, and the number of the outer movable teeth is 37.

[0012] Optionally, it further comprises a ring-shaped plug cover and a ring-shaped support, the end surface of the support is provided with a clamping groove, the outer circumferential surface of the plug cover is clamped in the clamping groove, the end surface of the support is installed on the shell, and the transmission shaft is installed on the key groove after being sequentially arranged in the inner hole of the support and the inner hole of the plug cover.

[0013] Optionally, the inner fixed disc, the first-level middle fixed disc, the second-level middle fixed disc and the outer fixed disc are all threadedly installed on the front cover.

[0014] Optionally, the inner movable disc, the first-level middle movable disc, the second-level middle movable disc and the outer movable disc are all threadedly installed on the rotating disc.

[0015] Optionally, it further comprises a connector, one end of the connector is in communication with the discharge port, and the other end of the connector is used for being in communication with a transportation pipeline.

[0016] Optionally, the shell is further provided with an observation oil cover, and the front cover is provided with an air inlet.

[0017] Optionally, the support is in communication with a sealing water pipe, the top of the support is provided with a lifting ring, an oil hole cover and a visual oil scope, and the end of the support is further connected with a protective cover connecting flange.

[0018] The high-frequency defibrator provided by the application comprises a casing, a front cover, a defibrator, and a transmission device. The defibrator comprises a fixed disc assembly and a movable disc assembly. First, the inner hole of a first middle fixed disc is attached to the outer circumferential surface of an inner fixed flange, the inner hole of a second middle fixed disc is attached to the outer circumferential surface of the first middle fixed flange, the inner hole of an outer fixed disc is attached to the outer circumferential surface of the second middle fixed flange, the inner hole of a first middle movable disc is attached to the outer circumferential surface of an inner movable flange, the inner hole of a second middle movable disc is attached to the outer circumferential surface of the first middle movable flange, and the inner hole of an outer movable disc is attached to the outer circumferential surface of the second middle movable flange. Then, the boss of a rotating disc is attached to the inner hole of the inner movable disc, and the transmission shaft is installed on the key groove of the rotating disc. Finally, when the motor drives the transmission shaft to rotate, the rotating shaft drives the rotating disc and the movable disc assembly to rotate together. When the slurry enters the inner hole of the inner fixed disc from the feeding port, the fibers are preliminarily dispersed under the mechanical action force, high-frequency turbulent motion, and hydration shearing force between the inner fixed teeth and the inner movable teeth, and then flow into the first middle fixed teeth and the first middle movable teeth, the second middle fixed teeth and the second middle movable teeth, and the outer fixed teeth and the outer movable teeth of the next stage for defibration. After the slurry is defibrated by the defibration device, the short-cut fibers after heat treatment can be uniformly dispersed, which helps the aramid III short-cut fibers to better contact and combine in the papermaking process, improves the uniformity, surface smoothness, and physical strength of the paper, and finally the slurry is output from the discharging port under the action of centrifugal force. BRIEF DESCRIPTION OF DRAWINGS

[0019] The preferred embodiments of the application will be described in detail below with the help of the accompanying drawings, which will help to understand the purposes and advantages of the application, in which:

[0020] Figure 1 It is a structure schematic diagram of the high-frequency defibrator of an embodiment of the application;

[0021] Figure 2 It is a partial sectional view of the high-frequency defibrator of an embodiment of the application;

[0022] Figure 3 It is an exploded structure schematic diagram of the movable disc assembly of the high-frequency defibrator of an embodiment of the application;

[0023] Figure 4 It is a structure schematic diagram of the movable disc assembly of the high-frequency defibrator of an embodiment of the application;

[0024] Figure 5 It is an exploded structure schematic diagram of the fixed disc assembly of the high-frequency defibrator of an embodiment of the application;

[0025] Figure 6 It is a structure schematic diagram of the fixed disc assembly of the high-frequency defibrator of an embodiment of the application;

[0026] Figure 7 It is a structure schematic diagram of the rotating disc of the high-frequency defibrator of an embodiment of the application;

[0027] Figure 8 Structure diagram of front cover of high-frequency defibrator according to an embodiment of the present application;

[0028] Figure 9 Structure diagram of support of high-frequency defibrator according to an embodiment of the present application;

[0029] Figure 10 Structure diagram of blocking cover of high-frequency defibrator according to an embodiment of the present application.

[0030] Explanation of reference signs:

[0031] 1: machine shell; 2: front cover; 3: defibrator; 4: inner fixed disc; 5: first-stage middle fixed disc; 6: second-stage middle fixed disc; 7: outer fixed disc; 8: inner fixed flange; 9: inner fixed tooth; 10: first-stage middle fixed flange; 11: first-stage middle fixed tooth; 12: second-stage middle fixed flange; 13: second-stage middle fixed tooth; 14: outer fixed tooth; 15: inner moving disc; 16: first-stage middle moving disc; 17: second-stage middle moving disc; 18: outer moving disc; 19: inner moving flange; 20: inner moving tooth; 21: first-stage middle moving flange; 22: first-stage middle moving tooth; 23: second-stage middle moving flange; 24: second-stage middle moving tooth; 25: outer moving tooth; 26: transmission shaft; 27: rotating disc; 28: boss; 29: key groove; 30: feeding port; 31: discharging port; 32: blocking cover; 33: support; 34: clamping groove; 35: connector; 36: observation oil cover; 37: air inlet; 38: sealing water pipe; 39: lifting ring; 40: oil hole cover; 41: visual oil lens; 42: protective cover connecting flange. DETAILED DESCRIPTION

[0032] The present application will be described in detail below with reference to the embodiments. Identical parts are denoted by identical reference signs. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0033] As Figures 1 to 8As shown, the high-frequency defibrator provided by the present application comprises a casing 1, a front cover 2, a defibrator 3, and a transmission device, wherein: the defibrator 3 is arranged in the casing 1; the defibrator 3 comprises a fixed disc assembly 43 and a movable disc assembly 44, the fixed disc assembly 43 comprises an annular inner fixed disc 4, an annular first middle fixed disc 5, an annular second middle fixed disc 6, and an annular outer fixed disc 7, the inner fixed disc 4 is provided with an inner fixed flange 8 and a plurality of inner fixed teeth 9, the plurality of inner fixed teeth 9 are arranged on the end face of the inner fixed flange 8, the first middle fixed disc 5 is provided with a first middle fixed flange 10 and a plurality of first middle fixed teeth 11, the plurality of first middle fixed teeth 11 are arranged on the end face of the first middle fixed flange 10, the second middle fixed disc 6 is provided with a second middle fixed flange 12 and a plurality of second middle fixed teeth 13, the plurality of second middle fixed teeth 13 are arranged on the end face of the second middle fixed flange 12, the outer fixed disc 7 is provided with a plurality of outer fixed teeth 14, the plurality of outer fixed teeth 14 are arranged on the end face of the outer fixed disc 7, the inner hole of the first middle fixed disc 5 is fittedly installed on the outer peripheral surface of the inner fixed flange 8, the inner hole of the second middle fixed disc 6 is fittedly installed on the outer peripheral surface of the first middle fixed flange 10, and the inner hole of the outer fixed disc 7 is fittedly installed on the outer peripheral surface of the second middle fixed flange 12; the movable disc assembly 44 comprises an annular inner movable disc 15, an annular first middle movable disc 16, an annular second middle movable disc 17, and an annular outer movable disc 18, the inner movable disc 15 is provided with an inner movable flange 19 and a plurality of inner movable teeth 20, the plurality of inner movable teeth 20 are arranged on the end face of the inner movable flange 19, the first middle movable disc 16 is provided with a first middle movable flange 21 and a plurality of first middle movable teeth 22, the plurality of first middle movable teeth 22 are arranged on the end face of the first middle movable flange 21, the second middle movable disc 17 is provided with a second middle movable flange 23 and a plurality of second middle movable teeth 24, the plurality of second middle movable teeth 24 are arranged on the end face of the second middle movable flange 23, the outer movable disc 18 is provided with a plurality of outer movable teeth 25, the plurality of outer movable teeth 25 are arranged on the end face of the outer movable disc 18, the inner hole of the first middle movable disc 16 is fittedly installed on the outer peripheral surface of the inner movable flange 19, the inner hole of the second middle movable disc 17 is fittedly installed on the outer peripheral surface of the first middle movable flange 21, and the inner hole of the outer movable disc 18 is fittedly installed on the outer peripheral surface of the second middle movable flange 23; the transmission device comprises a motor, a transmission shaft 26, and a rotating disc 27, two surfaces of the rotating disc 27 are provided with a boss 28 and a key groove 29 respectively, the transmission shaft 26 is installed on the key groove 29, the boss 28 is fitted on the inner hole of the inner movable disc 15, the fixed disc assembly 43 is installed on the front cover 2, the front cover 2 is installed on the casing 1, the movable disc assembly 44 is installed on the rotating disc 27, when the motor drives the transmission shaft 26 to rotate, the rotating shaft drives the rotating disc 27 and the movable disc assembly 44 to rotate together, the front cover 2 is provided with a feeding port 30 for inputting slurry, the feeding port 30 is communicated with the inner hole of the inner fixed disc 4, and the casing 1 is provided with a discharging port 31 for outputting slurry.

[0034] It should be noted that the casing 1 is detachably installed on the front cover 2.

[0035] The high-frequency defibrator provided by the application comprises a shell 1, a front cover 2, a defibrator 3 and a transmission device, the defibrator 3 comprises a fixed disc assembly 43 and a movable disc assembly 44, firstly, the inner hole of a first middle fixed disc 5 is attached and installed on the outer circumferential surface of an inner fixed flange 8, the inner hole of a second middle fixed disc 6 is attached and installed on the outer circumferential surface of a first middle fixed flange 10, the inner hole of an outer fixed disc 7 is attached and installed on the outer circumferential surface of a second middle fixed flange 12, the inner hole of a first middle movable disc 16 is attached and installed on the outer circumferential surface of an inner movable flange 19, the inner hole of a second middle movable disc 17 is attached and installed on the outer circumferential surface of a first middle movable flange 21, and the inner hole of an outer movable disc 18 is attached and installed on the outer circumferential surface of a second middle movable flange 23; then, the boss 28 of a rotating disc 27 is attached on the inner hole of the inner movable disc 15, and the transmission shaft 26 is installed on the key groove 29 of the rotating disc 27; finally, when the motor drives the transmission shaft 26 to rotate, the rotating shaft drives the rotating disc 27 and the movable disc assembly 44 to rotate together, when the slurry enters the inner hole of the inner fixed disc 4 from the feeding port 30, the slurry is dispersed under the mechanical action force, high-frequency turbulent motion and hydration shearing force between the inner fixed teeth 9 and the inner movable teeth 20, and then flows into the first middle fixed teeth 11 and the first middle movable teeth 22, the second middle fixed teeth 13 and the second middle movable teeth 24 and the outer fixed teeth 14 and the outer movable teeth 25 of the next stage for defibration, after the slurry is defibrated by the defibrator 3, the chopped fibers after heat treatment can be well and uniformly dispersed, which is helpful for better contact and combination of aramid III chopped fibers in the papermaking process, and improves the uniformity, surface smoothness and physical strength of the paper, and finally the slurry is output from the discharge port 31 under the action of centrifugal force.

[0036] In an embodiment of the application, the tooth side surface of the inner fixed tooth 9 is oppositely arranged with the end surface of the inner movable flange 19 and has a first gap, the tooth side surface of the first middle fixed tooth 11 is oppositely arranged with the end surface of the first middle movable flange 21 and has a second gap, and the tooth side surface of the second middle fixed tooth 13 is oppositely arranged with the end surface of the second middle movable flange 23 and has a third gap, the first gap, the second gap and the third gap can well defibrate the slurry stage by stage, and improve the defibration uniformity of the high-frequency defibrator.

[0037] In an embodiment of the application, the first gap, the second gap and the third gap are all 0.5-1mm, the first gap, the second gap and the third gap of the above-mentioned values can be more suitable for defibration of aramid III chopped fibers, and improve the defibration effect of the high-frequency defibrator on aramid III chopped fibers.

[0038] As Figures 3 to 6As shown in the figure, the tooth shapes of the inner fixed teeth 9, the first-level middle fixed teeth 11, the second-level middle fixed teeth 13, the outer fixed teeth 14, the inner movable teeth 20, the first-level middle movable teeth 22, the second-level middle movable teeth 24 and the outer movable teeth 25 are all circular arc teeth. In the embodiment, the teeth on the tooth rings are circular arc teeth, and with the increase of the number of tooth levels, the number of circular arc teeth gradually increases, and the gap between the teeth on each tooth ring gradually decreases, so as to adapt to the degree of defibration of the pulp fibers between the movable and fixed tooth rings of each level, and ensure that the pulp fibers can smoothly enter the tooth disc of the next level and be fully defibrated.

[0039] In an embodiment of the present application, the number of the plurality of inner fixed teeth 9 is 15, and the number of the plurality of inner movable teeth 20 is 13; the number of the plurality of first-level middle fixed teeth 11 is 27, and the number of the plurality of first-level middle movable teeth 22 is 17; the number of the plurality of second-level middle fixed teeth 13 is 27, and the number of the plurality of second-level middle movable teeth 24 is 23; the number of the plurality of outer fixed teeth 14 is 40, and the number of the plurality of outer movable teeth 25 is 37. Specifically, the plurality of inner movable teeth, the plurality of first-level middle movable teeth and the plurality of second-level middle movable teeth on the movable disc form a plurality of movable tooth rings, and the movable teeth on each movable tooth ring can cause different frequency turbulence when rotating, and the diameter and the number of the movable tooth rings gradually increase from the inside to the outside; the above-mentioned number of teeth can be better meshed and matched, so as to better defibrate the pulp fibers, and thus improve the defibration uniformity of the high-frequency defibrator.

[0040] As shown in the figure, Figure 9 and Figure 10 It also includes a ring-shaped plug cover 32 and a ring-shaped support 33, the end surface of the support 33 is provided with a clamping groove 34, the outer circumferential surface of the plug cover 32 is clamped in the clamping groove 34, the end surface of the support 33 is installed on the machine shell 1, and the transmission shaft 26 is installed on the key groove 29 after being sequentially arranged through the inner hole of the support 33 and the inner hole of the plug cover 32. In the embodiment, the support 33 is detachably installed on the machine shell 1, and the plug cover 32 can further prevent the pulp from entering the inner hole of the support 33, so that the pulp is fully defibrated by the defibration device 3 and then transported out from the discharge port 31, thereby improving the defibration uniformity of the high-frequency defibrator.

[0041] As shown in the figure, Figure 2 The inner fixed disc 4, the first-level middle fixed disc 5, the second-level middle fixed disc 6 and the outer fixed disc 7 are all threadedly installed on the front cover 2. In the embodiment, the inner fixed disc 4, the first-level middle fixed disc 5, the second-level middle fixed disc 6 and the outer fixed disc 7 are all detachably connected, thereby improving the convenience of installation and maintenance of the high-frequency defibrator.

[0042] As shown in the figure, Figure 2 The inner movable disc 15, the first-level middle movable disc 16, the second-level middle movable disc 17 and the outer movable disc 18 are all threadedly installed on the rotating disc 27. In the embodiment, the inner movable disc 15, the first-level middle movable disc 16, the second-level middle movable disc 17 and the outer movable disc 18 are all detachably connected, thereby improving the convenience of installation and maintenance of the high-frequency defibrator.

[0043] As shown in Figure 1 The connector 35 is connected to the discharge port 31 at one end and is connected to the conveying pipeline at the other end. In the embodiment, the connector 35 facilitates the conveying of the defibrated pulp into the conveying pipeline, thereby improving the conveying convenience of the high-frequency defibrator.

[0044] As shown in Figure 1 The machine shell 1 is further provided with an observation oil cover 36, and the front cover 2 is provided with an air inlet 37. In the embodiment, the observation oil cover 36 and the air inlet 37 facilitate the observation of the pulp flow and the wear of the teeth, thereby improving the use convenience of the high-frequency defibrator.

[0045] As shown in Figure 1 The support 33 is connected to the sealing water pipe 38. The top of the support 33 is provided with a lifting ring 39, an oil hole cover 40 and a visual oil scope 41. The end of the support 33 is further connected to a protective cover connecting flange 42. In the embodiment, the lifting ring 39 and the oil hole cover 40 facilitate the carrying and oil adding of the high-frequency defibrator. The visual oil scope 41 facilitates the observation of the oil level in the oil storage chamber. The protective cover connecting flange can be fixed on the support 33 by screws to fix the coupling protective cover. The coupling can connect the transmission shaft 26 and the motor, thereby improving the structural stability of the high-frequency defibrator.

[0046] The high-frequency defibrator provided by the application comprises a casing 1, a front cover 2, a defibrator 3, and a transmission device. The defibrator 3 comprises a fixed disc assembly 43 and a movable disc assembly 44. First, the inner hole of a first middle fixed disc 5 is attached to the outer circumferential surface of an inner fixed flange 8, the inner hole of a second middle fixed disc 6 is attached to the outer circumferential surface of a first middle fixed flange 10, the inner hole of an outer fixed disc 7 is attached to the outer circumferential surface of a second middle fixed flange 12, the inner hole of a first middle movable disc 16 is attached to the outer circumferential surface of an inner movable flange 19, the inner hole of a second middle movable disc 17 is attached to the outer circumferential surface of a first middle movable flange 21, and the inner hole of an outer movable disc 18 is attached to the outer circumferential surface of a second middle movable flange 23. Then, the boss 28 of a rotating disc 27 is attached to the inner hole of the inner movable disc 15, and the transmission shaft 26 is installed on the key groove 29 of the rotating disc 27. Finally, when the motor drives the transmission shaft 26 to rotate, the rotating shaft drives the rotating disc 27 and the movable disc assembly 44 to rotate together. When the pulp enters the inner hole of the inner fixed disc 4 from the feeding port 30, the pulp is dispersed under the mechanical action force, high-frequency turbulent motion and hydration shearing force between the inner fixed teeth 9 and the inner movable teeth 20, and then flows into the first middle fixed teeth 11 and the first middle movable teeth 22, the second middle fixed teeth 13 and the second middle movable teeth 24, and the outer fixed teeth 14 and the outer movable teeth 25 of the next stage for defibration. After the pulp is defibrated by the defibrator 3, the short-cut fibers after heat treatment can be well and uniformly dispersed, which helps the aramid III short-cut fibers to better contact and combine in the papermaking process, improves the uniformity, surface smoothness and physical strength of the paper, and finally the pulp is output from the discharge port 31 under the action of centrifugal force.

[0047] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the application, and not to limit them. Although the application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can modify the technical solutions described in the foregoing examples, or make equivalent replacements for some technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A high-frequency defibrator, characterized in that The device comprises a casing, a front cover, a loosening device, and a transmission device. The loosening device is arranged in the casing. The loosening device comprises a fixed disc assembly and a moving disc assembly. The fixed disc assembly comprises an inner fixed disc, a first middle fixed disc, a second middle fixed disc, and an outer fixed disc. The inner fixed disc is provided with an inner fixed flange and a plurality of inner fixed teeth.

2. The high-frequency defibrator according to claim 1, characterized in that The first middle fixed disc is provided with a first middle fixed flange and a plurality of first middle fixed teeth.

3. The high-frequency defibrator according to claim 2, characterized in that The second middle fixed disc is provided with a second middle fixed flange and a plurality of second middle fixed teeth. The outer fixed disc is provided with a plurality of outer fixed teeth. The inner hole of the first middle fixed disc is fittedly installed on the outer peripheral surface of the inner fixed flange. The inner hole of the second middle fixed disc is fittedly installed on the outer peripheral surface of the first middle fixed flange. The inner hole of the outer fixed disc is fittedly installed on the outer peripheral surface of the second middle fixed flange. The moving disc assembly comprises an inner moving disc, a first middle moving disc, a second middle moving disc, and an outer moving disc. The inner moving disc is provided with an inner moving flange and a plurality of inner moving teeth. The first middle moving disc is provided with a first middle moving flange and a plurality of first middle moving teeth. The second middle moving disc is provided with a second middle moving flange and a plurality of second middle moving teeth. The outer moving disc is provided with a plurality of outer moving teeth. The inner hole of the first middle moving disc is fittedly installed on the outer peripheral surface of the inner moving flange. The inner hole of the second middle moving disc is fittedly installed on the outer peripheral surface of the first middle moving flange. The inner hole of the outer moving disc is fittedly installed on the outer peripheral surface of the second middle moving flange. The transmission device comprises a motor, a transmission shaft, and a rotating disc. The rotating disc is provided with a boss and a key groove on two opposite surfaces. The transmission shaft is installed on the key groove. The boss is fitted on the inner hole of the inner moving disc. The fixed disc assembly is installed on the front cover. The front cover is installed on the casing. The moving disc assembly is installed on the rotating disc. When the motor drives the transmission shaft to rotate, the rotating shaft drives the rotating disc and the moving disc assembly to rotate. The front cover is provided with a feeding port for inputting slurry. The feeding port is connected with the inner hole of the inner fixed disc. The casing is provided with a discharging port for outputting slurry. The tooth side surface of the inner fixed tooth is oppositely arranged with the end surface of the inner moving flange, and has a first gap. The tooth side surface of the first middle fixed tooth is oppositely arranged with the end surface of the first middle moving flange, and has a second gap. The tooth side surface of the second middle fixed tooth is oppositely arranged with the end surface of the second middle moving flange, and has a third gap. The first gap, the second gap, and the third gap are all 0.5-1mm.

4. The high-frequency defibrator according to claim 1, characterized in that The tooth shapes of the inner fixed teeth, the first-level middle fixed teeth, the second-level middle fixed teeth, the outer fixed teeth, the inner movable teeth, the first-level middle movable teeth, the second-level middle movable teeth and the outer movable teeth are all circular arc teeth.

5. The high-frequency defibrator according to claim 1, characterized in that The number of the inner fixed teeth is 15, the number of the inner movable teeth is 13; the number of the first-level middle fixed teeth is 27, the number of the first-level middle movable teeth is 17; the number of the second-level middle fixed teeth is 27, the number of the second-level middle movable teeth is 23; the number of the outer fixed teeth is 40, and the number of the outer movable teeth is 37.

6. The high-frequency defibrator according to claim 1, characterized in that Further comprising a ring-shaped plugging cover and a ring-shaped support, an end surface of the support is provided with a clamping groove, an outer circumferential surface of the plugging cover is clamped in the clamping groove, the end surface of the support is installed on the casing, and the transmission shaft is installed on the key groove after being sequentially arranged in the inner hole of the support and the inner hole of the plugging cover.

7. The high-frequency defibrator according to claim 1, characterized in that The inner fixed disc, the first-level middle fixed disc, the second-level middle fixed disc and the outer fixed disc are all threadedly installed on the front cover.

8. The high-frequency defibrator according to claim 1, characterized in that The inner movable disc, the first-level middle movable disc, the second-level middle movable disc and the outer movable disc are all threadedly installed on the rotating disc.

9. The high-frequency defibrator according to claim 1, characterized in that Further comprising a connector, one end of the connector is communicated with the discharge port, and the other end of the connector is used for being communicated with a transportation pipeline.

10. The high-frequency defibrator according to claim 1, characterized in that The casing is further provided with an observation oil cover, and the front cover is provided with an air inlet.

11. The high-frequency defibrator according to claim 6, characterized in that The support is internally communicated with a sealing water pipe, the top of the support is provided with a lifting ring, an oil hole cover and a visual oil scope, and the end of the support is further connected with a protective cover connecting flange.

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