A kind of cotton fiber reprocessing pulverizing device for non-woven fabric production

Abstract

The application relates to a cotton fiber crushing device and particularly relates to a cotton fiber crushing device for non-woven fabric production and reprocessing, which comprises a crushing box and a feeding box, a crushing roller is arranged in the crushing box, and a fixed tooth is arranged at the lower end of the feeding box; the telescopic mechanism comprises a fixed cam, a crushing tooth is rollingly connected to the outer wall of the fixed cam, an elastic telescopic rod is fixedly connected to the crushing tooth, a hot air bin is arranged between a first sleeve and a second sleeve, a blowing hole is formed in the first sleeve, and a cleaning mechanism is arranged outside the crushing roller. The crushing effect of cotton is achieved through the meshing of the crushing tooth and the fixed tooth. When the crushing roller rotates, the crushing tooth is telescoped on the crushing roller under the action of the fixed cam and the elastic telescopic rod. The crushing tooth is in the extended state when the crushing tooth is meshed with the fixed tooth. After crushing, the crushing tooth is gradually retracted, the adhered fiber filaments are blown away from the crushing roller by the blown hot air, the cleaning and drying effects are achieved, and the crushing effect is not affected by too many adhered fiber filaments.

Description

Technical Field

[0001] This invention relates to the technical field of cotton fiber crushing devices, specifically a crushing device for reprocessing cotton fibers used in nonwoven fabric production. Background Technology

[0002] Nonwoven fabric is a type of fabric formed without spinning or weaving. It is made by arranging short textile fibers or filaments in a directional or random manner to form a web structure, and then reinforcing it using mechanical, thermal bonding, or chemical methods. It is a new type of fiber product with softness, breathability, and a planar structure. Cotton fiber generally refers to cotton, which is suitable for making various types of clothing, furniture fabrics, and industrial fabrics. In the production of nonwoven fabric, cotton or cotton products need to be broken down to obtain finer fibers for the production of nonwoven fabric.

[0003] Chinese Patent CN116351511A discloses a pulverizing device for cotton fiber reprocessing, including a pulverizer housing, a feeding box, a fiber pulverizing mechanism, and a discharge drying assembly. The feeding box is connected to the pulverizer housing and is equipped with a feeding pressing assembly. The fiber pulverizing mechanism is mounted on the pulverizer housing and the feeding box, and includes pulverizing wheels and multiple discharge wheels. When pulverizing waste pure cotton fiber products, it strips a large number of cotton fibers from each part of the waste cotton fiber product. The discharge drying assembly is mounted on the pulverizer housing to discharge and dry the pulverized cotton fibers inside the pulverizer housing. This invention, in the process of pulverizing and reusing waste pure cotton fiber products, not only produces longer cotton fibers with higher utilization rate and faster pulverizing efficiency, but also allows for segmented discharge of the pulverized waste pure cotton fibers, making it more versatile. However, the following problems may exist when using this device:

[0004] The unloading wheel can peel off the cotton fibers adhering to the crushing wheel. However, the unloading wheel and the crushing wheel have the same crushing main teeth structure and similar functions. Therefore, the crushing main teeth on the crushing wheel may have fibers adhering to them. When the unloading wheel peels off the fibers from the crushing main teeth of the crushing wheel, the fibers may also adhere to the crushing main teeth of the unloading wheel. With prolonged use, the fibers on the unloading wheel cannot be cleaned in time and increase. The unloading wheel cannot continue to peel off the fibers from the crushing wheel, resulting in more and more fibers adhering to the crushing wheel. At the same time, when the crushing main teeth and the crushing driven teeth mesh to crush the cotton, cotton fibers may adhere to both the crushing main teeth and the crushing driven teeth. Even if the cotton fibers on the crushing main teeth are cleaned by the unloading wheel, the cotton fibers on the crushing driven teeth will still adhere, which may affect the crushing effect.

[0005] Therefore, the present invention provides a crushing device for reprocessing cotton fibers in nonwoven fabric production. Summary of the Invention

[0006] To address the problems in existing technologies, this invention provides a pulverizing device for reprocessing cotton fibers used in nonwoven fabric production. This invention addresses the issues of fiber filaments sticking to the pulverizing teeth during the pulverizing process and the fiber filaments sticking to the unloading wheel after being separated from the pulverizing teeth.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a crushing device for reprocessing cotton fibers for non-woven fabric production, including a crushing box and a feeding box, a crushing roller is provided in the crushing box, a fixed tooth is provided at the lower end of the feeding box, the crushing roller includes a first sleeve and a second sleeve, and a telescopic mechanism is provided in the crushing roller;

[0008] The telescopic mechanism includes a fixed cam fixedly connected to the inner wall of the crushing chamber, a crushing tooth rollingly connected to the outer wall of the fixed cam, the crushing tooth slidingly penetrating the first sleeve and the second sleeve, the crushing tooth cooperating with the fixed tooth, an elastic telescopic rod fixedly connected to the crushing tooth, a cleaning and drying mechanism provided inside the crushing roller, a hot air chamber provided between the first sleeve and the second sleeve, an air blowing hole provided on the first sleeve, a cleaning mechanism provided outside the crushing roller, and the cleaning mechanism cooperating with the crushing tooth.

[0009] Preferably, the first sleeve has a first through groove, and the second sleeve has a second through groove. Both the first and second through grooves are slidably connected to the crushing teeth. The diameter of the first sleeve is larger than the diameter of the second sleeve. Air blowing holes are symmetrically opened on the side wall of the first through groove, and the air blowing holes are connected to the hot air chamber.

[0010] Preferably, the fixed cam is located inside the second sleeve, and a fixed rod is fixedly connected to the fixed cam. One end of the fixed rod rotatably passes through the crushing roller and is fixedly connected to the inner wall of the crushing box. One end of the crushing roller is fixedly connected to a drive shaft, which rotatably passes through the side wall of the crushing box. The end of the drive shaft away from the crushing box is fixedly connected to a motor.

[0011] Preferably, a movable tube is fixedly connected to the end of the crushing roller away from the drive shaft, the movable tube is connected to the hot air chamber, a fixed tube is rotatably sleeved to the end of the movable tube away from the crushing roller, and the end of the fixed tube away from the movable tube is fixedly connected to the hot air blower.

[0012] Preferably, the cleaning mechanism includes an elastic airbag fixedly connected to the inner wall of the crushing chamber. A connecting block is fixedly connected to the side of the elastic airbag near the crushing roller. The connecting block cooperates with the crushing teeth. An air blowing pipe is fixedly connected above the elastic airbag. The air blowing pipe passes through the connecting seat. The end of the air blowing pipe away from the elastic airbag is located above the fixed teeth and is parallel to the fixed teeth.

[0013] Preferably, the elastic airbag is located on one side of the rotation direction of the crushing roller, and the air blowing pipe corresponds to the fixed tooth.

[0014] Preferably, the fixed end of the elastic telescopic rod is fixedly connected to the inner wall of the first sleeve, a thrust spring is provided inside the elastic telescopic rod, the fixed end of the elastic telescopic rod passes through the second sleeve, the telescopic end of the elastic telescopic rod is fixedly connected to the crushing tooth, and a roller is fixedly connected to the end of the crushing tooth near the fixed cam, and the roller is in rolling connection with the fixed cam.

[0015] Preferably, the lower end of the feed box is located inside the crushing box, and the lower end of the feed box is symmetrically provided with connecting seats. The fixing teeth are fixedly connected to the connecting seats, and the fixing teeth and crushing teeth are arranged alternately.

[0016] Preferably, the distance between the top of the fixed cam and the first sleeve is less than the distance between the bottom of the fixed cam and the first sleeve.

[0017] The beneficial effects of this invention are:

[0018] (1) The cotton fiber reprocessing crushing device for non-woven fabric production described in this invention achieves the effect of crushing cotton by meshing crushing teeth and fixed teeth. When the crushing roller rotates, the crushing teeth extend and retract on the crushing roller under the action of fixed cam and elastic telescopic rod. When meshing with the fixed teeth, they are in the extended state. After crushing, the crushing teeth gradually retract. At this time, the fiber strands adhering to the crushing teeth are blown away from the crushing roller by the hot air blown out of the air outlet, achieving the effect of cleaning and drying at the same time, avoiding excessive adhering fiber strands that affect the crushing effect.

[0019] (2) The crushing device for cotton fiber reprocessing in nonwoven fabric production described in this invention, after the crushing tooth meshes with the fixed tooth, the crushing tooth gradually retracts under the rotation of the crushing roller. During this process, the crushing tooth squeezes the elastic air bag, so that the elastic air bag blows air onto the fixed tooth through the air blowing pipe, and the fibers that may be stuck on the fixed tooth are crushed. The meshing of the crushing tooth with the fixed tooth and the crushing tooth squeezing the elastic air bag are staggered. When the crushing tooth meshes with the fixed tooth, the elastic air bag is not squeezed. Similarly, when the elastic air bag is squeezed, the crushing tooth does not mesh with the fixed tooth, so as to ensure that the fixed tooth is not stuck with fibers when it meshes with the crushing tooth again, and avoids excessive fiber sticking under long-term use, which affects the crushing effect. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a front sectional view provided by the present invention;

[0023] Figure 3 for Figure 2 Enlarged view of point A;

[0024] Figure 4 This is a schematic diagram showing the connection between the crushing roller and the telescopic mechanism provided by the present invention;

[0025] Figure 5 This is a schematic diagram showing the connection between the cleaning mechanism and the crushing roller provided by the present invention;

[0026] Figure 6 This is a side sectional view of the crushing roller provided by the present invention;

[0027] Figure 7 for Figure 6 Enlarged view of point B;

[0028] Figure 8 This is a schematic diagram showing the connection between the first sleeve and the second sleeve of the present invention;

[0029] Figure 9 A schematic diagram of the internal structure of the elastic telescopic rod provided by the present invention.

[0030] In the diagram: 1. Feed box; 2. Crushing box; 3. Crushing roller; 31. First sleeve; 32. Second sleeve; 33. Crushing teeth; 4. Drive shaft; 5. First through groove; 6. Second through groove; 7. Telescopic mechanism; 71. Fixed cam; 72. Fixed rod; 73. Elastic telescopic rod; 731. Thrust spring; 74. Roller; 8. Cleaning and drying mechanism; 81. Hot air chamber; 82. Air blowing hole; 83. Movable tube; 84. Fixed tube; 85. Hot air blower; 9. Cleaning mechanism; 91. Elastic airbag; 92. Connecting block; 93. Air blowing pipe; 10. Connecting seat; 11. Fixed teeth. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example:

[0033] like Figures 1-9 As shown, the present invention provides a crushing device for cotton fiber reprocessing in nonwoven fabric production, which includes a crushing box 2 and a feeding box 1. A crushing roller 3 is provided inside the crushing box 2, and a fixed tooth 11 is provided at the lower end of the feeding box 1. The crushing roller 3 includes a first sleeve 31 and a second sleeve 32, and a telescopic mechanism 7 is provided inside the crushing roller 3.

[0034] The telescopic mechanism 7 includes a fixed cam 71 fixedly connected to the inner wall of the crushing chamber. Crushing teeth 33 are rolledly connected to the outer wall of the fixed cam 71. The crushing teeth 33 slide through the first sleeve 31 and the second sleeve 32, and cooperate with the fixed teeth 11. An elastic telescopic rod 73 is fixedly connected to the crushing teeth 33. A cleaning and drying mechanism 8 is provided inside the crushing roller 3. A hot air chamber 81 is provided between the first sleeve 31 and the second sleeve 32. An air blowing hole 82 is opened on the first sleeve 31. A cleaning mechanism 9 is provided outside the crushing roller 3, and the cleaning mechanism 9 cooperates with the crushing teeth 33. During operation, the cotton to be crushed enters the crushing chamber 2 through the feed box 1. The cotton contacts the crushing roller 3. Under the action of the fixed cam 71 and the elastic telescopic rod 73, the crushing teeth 33 extend and retract on the first sleeve 31 as the crushing roller 3 rotates. When the cotton to be crushed contacts the crushing roller 3, the crushing teeth 33 are in an extended state. Under the rotation of the crushing roller 3, the crushing teeth 33 drive the cotton towards the fixed teeth 11. When the crushing tooth 33 engages with the fixed tooth 11, it achieves the effect of crushing cotton. During the crushing process, the fibers adhering to the crushing tooth 33 and the fixed tooth 11 can be processed by the cleaning and drying mechanism 8 and the cleaning mechanism 9. After the crushing tooth 33 engages with the fixed tooth 11, under the rotation of the crushing roller 3, the crushing tooth 33 with the adhering fibers gradually retracts into the first sleeve 31. During the retraction process, some of the fibers adhering to the crushing tooth 33 may fall off. When the crushing tooth 33 retracts to a certain extent, the hot air chamber 81 blows air through the air hole 82 to the fibers still adhering to the crushing roller 3, blowing the fibers off. At the same time, the hot air can also dry the moisture in the cotton or cotton products. When the crushing tooth 33 extends to cooperate with the fixed tooth 11 for crushing, the air hole 82 is blocked by the crushing tooth 33, and the hot air in the hot air chamber 81 cannot be discharged, avoiding blowing the cotton up during crushing. The fibers adhering to the fixed tooth 11 are then removed by the crushing tooth 33 in conjunction with the cleaning mechanism 9.

[0035] In this embodiment, a first through groove 5 is formed on the first sleeve 31, and a second through groove 6 is formed on the second sleeve 32. Both the first through groove 5 and the second through groove 6 are slidably connected to the crushing teeth 33. The diameter of the first sleeve 31 is larger than the diameter of the second sleeve 32. Air blowing holes 82 are symmetrically formed on the side wall of the first through groove 5, and the air blowing holes 82 are connected to the hot air chamber 81. Figure 4 and Figure 8As shown, the positions of the first through groove 5 and the second through groove 6 correspond. The crushing tooth 33 is always located in the first through groove 5 and the second through groove 6. When the crushing tooth 33 rotates to the lower end of the fixed cam 71, the crushing tooth 33 retracts to its maximum extent, and the air blowing hole 82 is no longer blocked by the crushing tooth 33. Hot air in the hot air chamber 81 blows out through the air blowing hole 82, blowing off the adhered fibers. The fixed cam 71 is located inside the second sleeve 32, and a fixed rod 72 is fixedly connected to the fixed cam 71. One end of the crushing roller 3 rotates through the crushing roller 3 and is fixedly connected to the inner wall of the crushing box 2. A drive shaft 4 is fixedly connected to one end of the crushing roller 3, and the drive shaft 4 rotates through the side wall of the crushing box 2. A motor is fixedly connected to the end of the drive shaft 4 away from the crushing box 2. A movable tube 83 is fixedly connected to the end of the crushing roller 3 away from the drive shaft 4. The movable tube 83 is connected to the hot air chamber 81. A fixed tube 84 is rotatably sleeved at the end of the movable tube 83 away from the crushing roller 3. The end of the fixed tube 84 away from the movable tube 83 is fixedly connected to the hot air blower 85. The feed box 1... The lower end is located inside the crushing box 2. A connecting seat 10 is symmetrically arranged at the lower end of the feed box 1. The fixed teeth 11 are fixedly connected to the connecting seat 10, and the fixed teeth 11 and crushing teeth 33 are arranged alternately. When the motor starts and drives the crushing roller 3 to rotate, the roller 74 at the end of the crushing teeth 33 rolls on the surface of the fixed cam 71. The extended crushing teeth 33, under rotation, drive the cotton to be crushed towards the elastic airbag 91. When the crushing teeth 33 mesh with the fixed teeth 11, the cotton is crushed. The roller 74 causes the crushing roller... 3. When rotating, it can reduce the friction between the crushing teeth 33 and the fixed cam 71. When the crushing roller 3 rotates, the hot air blower 85 on the opposite side also blows air into the hot air chamber 81. The first sleeve 31 and the second sleeve 32 form a sealed hot air chamber 81. The movable tube 83, which is rotatably connected to the fixed tube 84, rotates with the crushing roller 3, so that the hot air blower 85 can always blow air into the hot air chamber 81. When the crushing teeth 33 retracts, the hot air can blow through the air blowing hole 82 to blow off the adhered fiber filaments.

[0036] In this embodiment, as Figure 4As shown, the cleaning mechanism 9 includes an elastic airbag 91 fixedly connected to the inner wall of the crushing box 2. A connecting block 92 is fixedly connected to the side of the elastic airbag 91 near the crushing roller 3. The connecting block 92 cooperates with the crushing teeth 33. An air blowing pipe 93 is fixedly connected above the elastic airbag 91. The air blowing pipe 93 passes through the connecting seat 10. The end of the air blowing pipe 93 away from the elastic airbag 91 is located above the fixed teeth 11 and is parallel to the fixed teeth 11. The elastic airbag 91 is located on one side of the rotation direction of the crushing roller 3, and the air blowing pipe 93 corresponds to the fixed teeth 11. When the crushing roller 3 rotates, the crushing teeth 33 enter the first sleeve 31. The device extends and retracts. When the crushing tooth 33 engages with the fixed tooth 11, it gradually retracts under rotation. During the retraction process, the crushing tooth 33 abuts against the connecting block 92. The connecting block 92 is squeezed, which compresses the elastic air bladder 91, allowing airflow to be discharged through the blowing pipe 93. When the crushing tooth 33 squeezes the elastic air bladder 91, the adjacent crushing tooth 33 does not engage with the fixed tooth 11. Therefore, the staggered arrangement allows the fibers adhering to the fixed tooth 11 after one engagement and crushing to be blown off before the next engagement, avoiding excessive fiber adhering to the fixed tooth 11 and affecting subsequent crushing operations.

[0037] In this embodiment, the fixed end of the elastic telescopic rod 73 is fixedly connected to the inner wall of the first sleeve 31. A thrust spring 731 is provided inside the elastic telescopic rod 73. The fixed end of the elastic telescopic rod 73 passes through the second sleeve 32. The telescopic end of the elastic telescopic rod 73 is fixedly connected to the crushing tooth 33. A roller 74 is fixedly connected to one end of the crushing tooth 33 near the fixed cam 71. The roller 74 is in rolling connection with the fixed cam 71. The distance between the top of the fixed cam 71 and the first sleeve 31 is less than the distance between the bottom of the fixed cam 71 and the first sleeve 31. When the roller 74 rolls on the fixed cam 71, the crushing tooth 33 extends and retracts due to the shape of the fixed cam 71. When the roller 74 rolls to the position above the fixed cam 71, the distance between the roller 74 and the first sleeve 31 decreases, causing the thrust spring 731 to be compressed, which in turn shortens the elastic telescopic rod 73. As a result, the crushing tooth 33 extends outward from the first sleeve 31. Conversely, when the roller 74 rolls to the position below the fixed cam 71, the thrust spring 731 returns to its initial state, the elastic telescopic rod 73 resets, and the crushing tooth 33 retracts. As the crushing tooth 33 moves from above the fixed cam 71 downward, it is in a state of gradual retraction. After the crushing tooth 33 retracts, the air hole 82 located in the first through groove 5 is exposed, which can discharge the hot air from the hot air chamber 81 and blow off the adhered fiber filaments.

[0038] Working principle: In use, start the motor and hot air blower 85, and put cotton or cotton products into the feed box 1. The crushing roller 3 rotates under the action of the drive shaft 4. When the crushing roller 3 rotates, the roller 74 on the end of the crushing tooth 33 rolls on the surface of the fixed cam 71. When the roller 74 is above the fixed cam 71, the thrust spring 731 is compressed, which shortens the elastic telescopic rod 73. At this time, the length of the extended part of the crushing tooth 33 is longer. When the extended crushing tooth 33 rotates, it drives the cotton towards the elastic air bag 91. When the crushing roller 3 rotates and the crushing tooth 33 meshes with the fixed tooth 11, the cotton is crushed. After engagement, the protruding part of the crushing tooth 33 gradually shortens. During this process, the end of the crushing tooth 33 abuts against the connecting block 92, causing the elastic air bag 91 to be squeezed. This causes the air blowing pipe 93 to blow air onto the fixed tooth 11. When the crushing tooth 33 is squeezed against the elastic air bag 91, its adjacent crushing tooth 33 does not contact the fixed tooth 11. Therefore, when the air blowing pipe 93 blows air onto the fixed tooth 11, the crushing roller 3 does not crush the cotton. The air blowing pipe 93 blows away any fibers that may be stuck on the fixed tooth 11 to ensure that the fixed tooth 11 is not stuck with fibers when it engages with the crushing tooth 33 again. This avoids excessive fiber sticking on the fixed tooth 11 during the crushing process, which would affect the crushing effect.

[0039] During the rotation of the crushing roller 3, the lower crushing teeth 33 retract into the crushing roller 3, exposing the air blowing holes 82 in the first through groove 5. Some of the fiber strands adhering to the crushing teeth 33 automatically separate from the crushing roller 3 after the crushing teeth 33 retract. One end of the fixed tube 84 is rotatably connected to the movable tube 83. When the hot air blower 85 and the motor are working, the movable tube 83 rotates with the crushing roller 3, so that the hot air blower 85 always blows air into the hot air chamber 81 through the movable tube 83. When the crushing roller 3 rotates, when the air blowing holes 82 are no longer blocked by the crushing teeth 33, the hot air in the hot air chamber 81 is blown out through the air blowing holes 82, blowing off the remaining un-detached fiber strands. The hot air can dry the moisture in the waste cotton products. During the crushing process, the fiber strands adhering to the crushing teeth 33 and the fixed teeth 11 are blown off by the air in the hot air chamber 81 and the elastic air bag 91, avoiding the accumulation of more and more fiber strands after long-term use, which would affect the subsequent crushing effect.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A crushing device for reprocessing cotton fibers in nonwoven fabric production, comprising a crushing box (2) and a feeding box (1), characterized in that: The crushing box (2) is equipped with a crushing roller (3), the feed box (1) is equipped with a fixed tooth (11) at the lower end, the crushing roller (3) includes a first sleeve (31) and a second sleeve (32), the crushing roller (3) is equipped with a telescopic mechanism (7), the feed box (1) is symmetrically equipped with a connecting seat (10) at the lower end, and the fixed tooth (11) is fixedly connected to the connecting seat (10); The telescopic mechanism (7) includes a fixed cam (71) fixedly connected to the inner wall of the crushing box (2). A crushing tooth (33) is rolledly connected to the outer wall of the fixed cam (71). The crushing tooth (33) slides through the first sleeve (31) and the second sleeve (32). The crushing tooth (33) cooperates with the fixed tooth (11). An elastic telescopic rod (73) is fixedly connected to the crushing tooth (33). The fixed end of the elastic telescopic rod (73) is fixedly connected to the inner wall of the first sleeve (31). The elastic telescopic rod (73) is provided with There is a thrust spring (731), the fixed end of the elastic telescopic rod (73) passes through the second sleeve (32), the telescopic end of the elastic telescopic rod (73) is fixedly connected to the crushing tooth (33), a cleaning and drying mechanism (8) is provided inside the crushing roller (3), a hot air chamber (81) is provided between the first sleeve (31) and the second sleeve (32), an air blowing hole (82) is opened on the first sleeve (31), a cleaning mechanism (9) is provided outside the crushing roller (3), and the cleaning mechanism (9) cooperates with the crushing tooth (33); The first sleeve (31) has a first through groove (5), and the second sleeve (32) has a second through groove (6). The first through groove (5) and the second through groove (6) are slidably connected to the crushing teeth (33). The diameter of the first sleeve (31) is larger than the diameter of the second sleeve (32). The side wall of the first through groove (5) has symmetrically opened air holes (82), and the air holes (82) are connected to the hot air chamber (81). The cleaning mechanism (9) includes an elastic airbag (91) fixedly connected to the inner wall of the crushing box (2). A connecting block (92) is fixedly connected to the side of the elastic airbag (91) near the crushing roller (3). The connecting block (92) cooperates with the crushing teeth (33). An air blowing pipe (93) is fixedly connected above the elastic airbag (91). The air blowing pipe (93) passes through the connecting seat (10). The end of the air blowing pipe (93) away from the elastic airbag (91) is located above the fixed teeth (11) and is parallel to the fixed teeth (11).

2. The crushing device for cotton fiber reprocessing in nonwoven fabric production according to claim 1, characterized in that: The fixed cam (71) is located inside the second sleeve (32). A fixed rod (72) is fixedly connected to the fixed cam (71). One end of the fixed rod (72) rotates through the crushing roller (3) and is fixedly connected to the inner wall of the crushing box (2). One end of the crushing roller (3) is fixedly connected to a drive shaft (4). The drive shaft (4) rotates through the side wall of the crushing box (2). The end of the drive shaft (4) away from the crushing box (2) is fixedly connected to a motor.

3. The crushing device for cotton fiber reprocessing in nonwoven fabric production according to claim 2, characterized in that: The end of the crushing roller (3) away from the drive shaft (4) is fixedly connected to a movable tube (83), which is connected to the hot air chamber (81). The end of the movable tube (83) away from the crushing roller (3) is rotatably sleeved with a fixed tube (84), and the end of the fixed tube (84) away from the movable tube (83) is fixedly connected to the hot air blower (85).

4. The pulverizing device for cotton fiber reprocessing in nonwoven fabric production according to claim 1, characterized in that: The elastic airbag (91) is located on one side of the rotation direction of the crushing roller (3), and the air blowing pipe (93) corresponds to the fixed tooth (11).

5. A crushing device for cotton fiber reprocessing in nonwoven fabric production according to claim 2, characterized in that: A roller (74) is fixedly connected to one end of the crushing tooth (33) near the fixed cam (71), and the roller (74) is in rolling connection with the fixed cam (71).

6. The pulverizing device for cotton fiber reprocessing in nonwoven fabric production according to claim 1, characterized in that: The lower end of the feed box (1) is located inside the crushing box (2), and the fixed teeth (11) and crushing teeth (33) are arranged alternately.

7. The pulverizing device for cotton fiber reprocessing in nonwoven fabric production according to claim 1, characterized in that: The distance between the top of the fixed cam (71) and the first sleeve (31) is less than the distance between the bottom of the fixed cam (71) and the first sleeve (31).

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