A drying apparatus for processing flame-retardant fiber yarn

By designing a drying device for flame-retardant yarn processing with heating elements, fans, rotating columns, and gear assemblies, single yarns are dried. The yarn position is adjusted using a bidirectional threaded rod and an electric push rod, solving the problem of moisture inside the yarn roller and achieving comprehensive, uniform, and efficient drying of the yarn.

CN224302612UActive Publication Date: 2026-05-29WUXI YIZHONGDA TEXTILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI YIZHONGDA TEXTILE CO LTD
Filing Date
2025-04-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing drying equipment for flame-retardant fiber yarn processing, the inside of the yarn rollers often cannot be completely dried during the drying process, resulting in a cumbersome secondary drying process and affecting work efficiency.

Method used

A drying device comprising a heating element, a fan, a rotating column, and a gear assembly was designed. It dries individual yarns by using a bidirectional threaded rod and an electric push rod to adjust the yarn position to ensure uniform heating and moisture extrusion. Combined with an exhaust fan, it achieves hot air circulation to ensure thorough drying of the yarn.

Benefits of technology

It achieves comprehensive and uniform drying of yarn, improves work efficiency, adapts to yarns of different thicknesses, and solves the problem of dampness inside the yarn rollers in traditional equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to material drying technical field especially relates to a kind of drying equipment for processing flame-retardant fibre yarn, it includes: box, the inside both sides of box are fixedly installed with installation box, two installation boxes are fixedly installed with heating tube in, two installation frames are slidably installed in the box, the outside wall of one side of two installation frames is slidably connected with slide bar respectively, the outside wall of the other side of two installation frames is screw-connected with two-way threaded rod respectively;Two heating tubes heat to make the temperature inside equipment rise to reach the requirement of yarn drying, second motor drives the fan rotation in box to make the internal hot air evenly dispersed, so that every yarn can be heated evenly, two first gears drive two rotating columns to rotate respectively to reach the effect of yarn paying-off and take-up, this structure is more comprehensive to the drying of yarn, solve the problem that yarn roll is still damp because of not comprehensive drying, have practical benefit.
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Description

Technical Field

[0001] This utility model belongs to the field of material drying technology, and in particular relates to a drying equipment for processing flame-retardant fiber yarn. Background Technology

[0002] Yarn is a type of textile product made from various textile fibers processed into a certain fineness. It is used for weaving, rope making, thread making, knitting, and embroidery, and is divided into short fiber yarn and continuous filament yarn.

[0003] Existing drying equipment for flame-retardant fiber yarn processing involves directly placing the wound yarn rollers into the dryer. While convenient, this method results in only the surface layer of yarn being dried due to the dense winding, leaving the yarn inside the rollers damp and unusable. A second drying process is necessary, but this requires removing the already dried yarn, a cumbersome process that reduces efficiency. Therefore, we propose a new drying equipment for flame-retardant fiber yarn processing. Utility Model Content

[0004] The purpose of this invention is to provide a drying device for processing flame-retardant fiber yarns, so as to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a drying device for processing flame-retardant fiber yarn, comprising:

[0006] The housing has mounting boxes fixedly installed on both sides of its interior. Each mounting box contains a heating element. A sliding rod is fixedly installed on one side of each mounting box, and a bidirectional threaded rod is rotatably installed on the other side of each mounting box. The two threads on the bidirectional threaded rod have opposite directions of rotation. Two mounting frames are slidably installed inside the housing. Multiple wire guide rings are fixedly installed on the outer walls of each mounting frame. One side of each mounting frame is slidably connected to the outer wall of the sliding rod, and the other side of each mounting frame is threadedly connected to the outer wall of the bidirectional threaded rod.

[0007] Two bases are fixedly installed on one side of the box body. A rotating column is rotatably installed inside each of the two bases. Three feed rollers are rotatably installed on one of the rotating columns, and three take-up rollers are rotatably installed on the other rotating column. A fan is rotatably installed on the bottom surface inside the box body, and the top of the fan is rotatably connected to the top surface inside the box body.

[0008] The mounting box is fixedly installed on the bottom surface of the box body. The mounting box has three cavities, and ventilation grilles are fixedly installed on the top surface of two of the cavities and connected to the interior of the box body.

[0009] A drive assembly is disposed on the bottom surface of the housing and is used to drive the fan and two rotating columns to rotate.

[0010] In the above technical solution, the drive assembly further includes two first gears, which are rotatably mounted on the bottom surfaces of two bases respectively. One end of each of the two first gears is fixedly connected to the bottom ends of two rotating columns respectively. A third gear is rotatably mounted on the bottom surface of the housing, and the third gear meshes with the two first gears respectively. A second motor is fixedly mounted on the bottom surface of another cavity inside the mounting box. A second gear is fixedly mounted on the outer wall of the output shaft of the second motor. The second gear is rotatably connected to the bottom surface of the housing. The second gear meshes with the third gear. The top end of the output shaft of the second motor passes through the bottom surface of the housing and is fixedly connected to the bottom end of the fan.

[0011] In the above technical solution, a first motor is further fixedly installed on the outer wall of the housing, and one end of the output shaft of the first motor passes through the outer wall of the housing and is fixedly connected to one end of the bidirectional threaded rod.

[0012] In the above technical solution, furthermore, an exhaust fan is fixedly installed on the bottom surface of another cavity inside the mounting box, and the two sides of the exhaust fan are respectively connected to two of the cavities.

[0013] In the above technical solution, a sliding plate is slidably installed on the other side of the box, a sleeve is fixedly installed on the outer wall of the sliding plate, a limit block is fixedly installed on the outer wall of the box, and the sleeve, the sliding plate and the limit block are movably connected by the same insert rod.

[0014] In the above technical solution, further, six circular holes are provided on one side of the box body, and the six circular holes correspond to three pay-off rollers and three take-up rollers respectively. A fixing plate is fixedly installed on one side of each of the three circular holes, and an electric push rod is fixedly installed on both sides of each of the three fixing plates. An mounting plate is provided above each of the three fixing plates, and the two sides of each of the three mounting plates are fixedly connected to the top ends of multiple electric push rods respectively.

[0015] In the above technical solution, two rotating seats are fixedly installed on the top surface of the box. Magnets are provided on one side of the interior of the two rotating seats, and magnets are provided at the top of the two rotating columns. The two rotating columns are magnetically connected to the two rotating seats respectively.

[0016] In the above technical solution, the top surface of the box is provided with an air outlet, and an air outlet pipe is fixedly installed inside the air outlet.

[0017] The beneficial effects of this utility model are:

[0018] 1. This flame-retardant fiber yarn drying equipment, when in use, involves the worker first removing the two rotating seats from the tops of the two rotating columns, then placing three pre-wound yarn feed rollers and three unwound yarn take-up rollers into the two rotating columns, and then replacing the two rotating seats. The sliding plate exposes the interior of the chamber. The worker first takes a yarn end from the feed roller, passes it through one of the round holes, and extends it into the chamber. The yarn end then passes through each yarn guide ring, finally exiting through another round hole and being tied to one of the take-up rollers. After all the yarn is wrapped and tied, the sliding plate is closed to prevent heat loss during drying. At this point, the two heating elements are activated. The heat pipes raise the internal temperature of the equipment to meet the requirements for yarn drying. Then, the second motor is activated, driving a fan inside the chamber to evenly distribute the hot air, ensuring each yarn is heated uniformly. Simultaneously, the second motor drives the second gear, which meshes with the third gear. The third gear meshes with two first gears, which in turn drive two rotating columns to achieve the effect of unwinding and rewinding the yarn. This equipment uses a method of drying individual yarns. Compared to traditional drying methods, this structure provides more comprehensive drying, solving the problem of damp yarn inside the rollers due to incomplete drying, offering practical advantages.

[0019] 2. This flame-retardant fiber yarn drying equipment addresses the issue of moisture inside the yarn during drying. Since the yarn is initially damp and filled with water, direct drying would negatively impact the final drying effect. To address this, multiple electric push rods are activated, controlling the descent of three mounting plates based on the yarn's thickness. The mounting plates and fixing plates clamp the yarn without obstructing its passage, squeezing out most of the moisture. During drying, a first motor drives a bidirectional threaded rod, moving two mounting frames according to the yarn's thickness to bring it closer to the fan for optimal drying. Finally, an exhaust fan circulates the hot air within the chamber. This structure not only improves drying efficiency but also adapts to yarns of any thickness, offering practical advantages. Attached Figure Description

[0020] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0021] Figure 2 This is the second structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 4This is a schematic diagram of the bidirectional threaded rod and the first motor structure in this utility model;

[0024] Figure 5 This is a schematic diagram of the drive component structure in this utility model;

[0025] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 7 This utility model Figure 5 Enlarged structural diagram at point B.

[0027] The markings in the diagram are as follows:

[0028] 1. Housing; 2. Mounting box; 3. Sliding plate; 4. Rotating seat; 5. First motor; 6. Rotating column; 7. Pay-off roller; 8. Take-up roller; 9. Base; 10. First gear; 11. Electric push rod; 12. Second gear; 13. Second motor; 14. Exhaust fan; 15. Ventilation grille; 16. Mounting box; 17. Heating element; 18. Wire guide ring; 19. Fan; 20. Slide rod; 21. Bidirectional threaded rod; 22. Mounting frame; 23. Third gear; 24. Sleeve; 25. Insert rod; 26. Fixing plate; 27. Mounting plate; 28. Round hole; 29. ​​Air outlet pipe; 30. Limiting block. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0033] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples. Example 1

[0034] Please see Figure 1-7 As shown in the figure, this embodiment provides a drying device for processing flame-retardant fiber yarns.

[0035] include:

[0036] The enclosure 1 has two mounting boxes 16 fixedly installed on both sides of its interior. Each mounting box 16 contains a heating element 17. A single sliding rod 20 is fixedly installed on one side of each mounting box 16, and a single bidirectional threaded rod 21 is rotatably installed on the other side of each mounting box 16. The two threads on the bidirectional threaded rod 21 have opposite directions of rotation. Two mounting frames 22 are slidably installed inside the enclosure 1. Multiple wire guide rings 18 are fixedly installed on the outer walls of each mounting frame 22. One side of each mounting frame 22 is slidably connected to the outer wall of the sliding rod 20, and the other side of each mounting frame 22 is threadedly connected to the outer wall of the bidirectional threaded rod 21. Two bases 9 are fixedly installed on one side of the enclosure 1. On the side, rotating columns 6 are rotatably installed inside both bases 9. Three feed rollers 7 are rotatably installed on one rotating column 6, and three take-up rollers 8 are rotatably installed on the other rotating column 6. A fan 19 is rotatably installed on the bottom surface of the inner chamber 1, and the top of the fan 19 is rotatably connected to the top surface of the inner chamber 1. Mounting box 2 is fixedly installed on the bottom surface of the chamber 1. The mounting box 2 has three cavities, two of which have ventilation grilles 15 fixedly installed on their top surfaces and connected to the interior of the chamber 1. The drive assembly is located on the bottom surface of the chamber 1 and is used to drive the fan 19 and the two rotating columns 6 to rotate. When the equipment is in use, the worker first moves the two rotating seats 4 from the top of the two rotating columns 6. The top is opened, and the three pre-wound yarn feed rollers 7 and three unwound yarn take-up rollers 8 are placed into the two rotating columns 6 respectively. Then, the two rotating seats 4 are put back on top of the two rotating columns 6. The sliding plate 3 exposes the interior of the box 1. The worker first takes a yarn end from the feed roller 7, passes it through one of the round holes 28, and extends it into the box 1. The yarn end then passes through each yarn guide ring 18 one by one, and finally comes out through the other round hole 28 and is tied to one of the take-up rollers 8. After all the yarn is wrapped and tied, the sliding plate 3 is closed to prevent heat loss during drying. At this time, the two heating tubes 17 are activated, and the two heating tubes 17 heat up, raising the temperature inside the equipment to dry the yarn. The second motor 13 is then started. The second motor 13 drives the fan 19 inside the housing 1 to rotate, dispersing the hot air evenly so that each yarn can be heated evenly. At the same time, the second motor 13 drives the second gear 12 to rotate. The second gear 12 meshes with the third gear 23, which meshes with the two first gears 10 respectively. The two first gears 10 drive the two rotating columns 6 to rotate, achieving the effect of yarn feeding and take-up. This equipment uses a method of drying single yarns. Compared with traditional drying methods, this structure dries the yarn more comprehensively, solving the problem of the yarn roller remaining damp due to incomplete drying, which has practical benefits. Example 2

[0037] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] The drive assembly includes two first gears 10, which are rotatably mounted on the bottom surfaces of two bases 9. One end of each first gear 10 is fixedly connected to the bottom end of two rotating columns 6. A third gear 23 is rotatably mounted on the bottom surface of the housing 1, meshing with the two first gears 10. A second motor 13 is fixedly mounted on the bottom surface of another cavity inside the mounting box 2. A second gear 12 is fixedly mounted on the outer wall of the output shaft of the second motor 13, rotatably connected to the bottom surface of the housing 1, and meshing with the third gear 23. The top end of the output shaft of the second motor 13 passes through the bottom surface of the housing 1 and is fixedly connected to the bottom end of the fan 19. The second motor 13 is started, which drives the fan 19 inside the housing 1 to rotate, dispersing the hot air evenly so that each yarn can be heated evenly. At the same time, the second motor 13 drives the second gear 12 to rotate. The second gear 12 meshes with the third gear 23, which meshes with the two first gears 10 respectively. The two first gears 10 drive the two rotating columns 6 to rotate, achieving the effect of unwinding and rewinding the yarn. This equipment uses a method of drying single yarns. Compared with traditional drying methods, this structure dries the yarn more comprehensively and solves the problem of the yarn roller remaining damp due to incomplete drying, which has practical benefits. Example 3

[0039] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The outer wall of the housing 1 is fixedly installed with a first motor 5. One end of the output shaft of the first motor 5 passes through the outer wall of the housing 1 and is fixedly connected to one end of the bidirectional threaded rod 21. When the first motor 5 is started, the first motor 5 drives the bidirectional threaded rod 21 to rotate. The two mounting frames 22 are moved according to the thickness of the yarn so that the yarn can be close to the fan 19 to ensure the drying effect. It is simple and practical. Example 4

[0041] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] In the installation box 2, an exhaust fan 14 is fixedly installed on the bottom surface of another cavity. The two sides of the exhaust fan 14 are connected to two cavities respectively. When the exhaust fan 14 is started, the hot air in the box 1 is circulated, which is simple and practical. Example 5

[0043] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0044] A sliding plate 3 is slidably installed on the other side of the box 1. A sleeve 24 is fixedly installed on the outer wall of the sliding plate 3. A limiting block 30 is fixedly installed on the outer wall of the box 1. The sleeve 24, the sliding plate 3 and the limiting block 30 are movably connected by the same insert rod 25 to limit the sliding plate 3 and prevent the sliding plate 3 from leaking out during the drying process, which would cause hot air to flow out and affect the yarn drying effect. This has practical benefits. Example 6

[0045] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] The box 1 has six round holes 28 on one side, which correspond to three feed rollers 7 and three take-up rollers 8. A fixing plate 26 is fixedly installed on one side of each of the three round holes 28. Electric push rods 11 are fixedly installed on both sides of each of the three fixing plates 26. A mounting plate 27 is set above each of the three fixing plates 26. The two sides of each mounting plate 27 are fixedly connected to the top of the electric push rods 11. When the electric push rods 11 are activated, the three mounting plates 27 are lowered according to the thickness of the yarn until the fixing plates 26 and mounting plates 27 just clamp the yarn without affecting the yarn's passage. The mounting plates 27 and fixing plates 26 will squeeze out most of the moisture inside the yarn. This structure not only improves the drying efficiency of the yarn but also can be adapted to yarns of any thickness, which has practical benefits. Example 7

[0047] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0048] Two rotating seats 4 are fixedly installed on the top surface of the housing 1. Magnets are provided on one side of the interior of the two rotating seats 4. Magnets are provided at the top of the two rotating columns 6. The two rotating columns 6 are magnetically connected to the two rotating seats 4 respectively. The magnetic design is not only sturdy but also easy to disassemble, improving work efficiency and making it simple and practical. Example 8

[0049] This embodiment provides a drying device for processing flame-retardant fiber yarns, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The top surface of the housing 1 is provided with an air outlet, and an air outlet pipe 29 is fixedly installed inside the air outlet. When drying the yarn, the moisture inside the yarn will turn into water vapor due to the high internal temperature. The water vapor flows out of the equipment through the air outlet pipe 29, preventing water vapor from condensing on the top surface of the equipment and affecting the drying effect. It is simple and practical.

[0051] In use: When using the equipment, the worker first removes the two rotating seats 4 from the tops of the two rotating columns 6, and then places the three pre-wound yarn feed rollers 7 and the three unwound yarn take-up rollers 8 into the two rotating columns 6 respectively. The two rotating seats 4 are then replaced on top of the two rotating columns 6. The sliding plate 3 exposes the interior of the housing 1. The worker first takes a thread end from the feed roller 7, passes it through one of the round holes 28, and extends it into the housing 1. The thread end then passes through each thread guide ring 18 one by one, finally exiting through the other round hole 28 and being tied to one of the take-up rollers 8. After all the yarn is wrapped and tied, the sliding plate 3 is closed to prevent heat loss during drying. At this time, the two heating tubes 17 are activated, and the two heating tubes 17 heat up the equipment. Once the internal temperature of the equipment reaches the required level for yarn drying, the second motor 13 is activated. The second motor 13 drives the fan 19 inside the housing 1 to rotate, dispersing the hot air evenly so that each yarn can be heated uniformly. Simultaneously, the second motor 13 drives the second gear 12 to rotate. The second gear 12 meshes with the third gear 23, which in turn meshes with two first gears 10. The two first gears 10 drive two rotating columns 6 to rotate, achieving the effect of yarn unwinding and rewinding. This equipment uses a method of drying individual yarns. Compared to traditional drying methods, this structure provides more comprehensive yarn drying, solving the problem of dampness inside the yarn rollers due to incomplete drying, offering practical advantages.

[0052] When the equipment dries yarn, the yarn is wet and full of moisture. If it is dried directly, the moisture inside the yarn will affect the final drying effect. At this time, multiple electric push rods 11 are activated to control the three mounting plates 27 to descend according to the thickness of the yarn until the fixing plate 26 and the mounting plate 27 just clamp the yarn without affecting the yarn's passage. The mounting plate 27 and the fixing plate 26 will squeeze out most of the moisture inside the yarn. During the yarn drying process, the first motor 5 is activated, which drives the bidirectional threaded rod 21 to rotate. The two mounting frames 22 are moved according to the thickness of the yarn so that the yarn can be close to the fan 19 to ensure the drying effect. Then, the exhaust fan 14 is activated to circulate the hot air in the chamber 1. This structure not only improves the drying efficiency of the yarn but also can be adapted to yarns of any thickness, which has practical benefits.

[0053] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A drying device for processing flame-retardant fiber yarn, characterized in that, include: Box (1), with mounting boxes (16) fixedly installed on both sides of the box (1), heating tubes (17) fixedly installed in both mounting boxes (16), a slide rod (20) fixedly installed on one side of the two mounting boxes (16), and a bidirectional threaded rod (21) rotatably installed on the other side of the two mounting boxes (16). The two threads on the bidirectional threaded rod (21) have opposite directions of rotation. Two mounting frames (22) are slidably installed inside the box (1). Multiple wire guide rings (18) are fixedly installed on the outer walls of the two mounting frames (22). One side of the two mounting frames (22) is slidably connected to the outer wall of the slide rod (20), and the other side of the two mounting frames (22) is threadedly connected to the outer wall of the bidirectional threaded rod (21). Two bases (9) are fixedly installed on one side of the box (1). Rotating columns (6) are rotatably installed inside each of the two bases (9). Three feed rollers (7) are rotatably installed on one of the rotating columns (6), and three take-up rollers (8) are rotatably installed on the other rotating column (6). A fan (19) is rotatably installed on the bottom surface inside the box (1), and the top of the fan (19) is rotatably connected to the top surface inside the box (1). The mounting box (2) is fixedly installed on the bottom surface of the box body (1). The mounting box (2) has three cavities, and the top surfaces of two of the cavities are fixedly equipped with ventilation grilles (15) and connected to the interior of the box body (1). A drive assembly is disposed on the bottom surface of the housing (1) and is used to drive the fan (19) and the two rotating columns (6) to rotate.

2. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, The drive assembly includes two first gears (10), which are rotatably mounted on the bottom surfaces of two bases (9). One end of each first gear (10) is fixedly connected to the bottom of two rotating columns (6). A third gear (23) is rotatably mounted on the bottom surface of the housing (1). The third gear (23) meshes with the two first gears (10). A second motor (13) is fixedly mounted on the bottom surface of another cavity inside the mounting box (2). A second gear (12) is fixedly mounted on the outer wall of the output shaft of the second motor (13). The second gear (12) is rotatably connected to the bottom surface of the housing (1). The second gear (12) meshes with the third gear (23). The top end of the output shaft of the second motor (13) passes through the bottom surface of the housing (1) and is fixedly connected to the bottom of the fan (19).

3. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, A first motor (5) is fixedly installed on the outer wall of the housing (1). One end of the output shaft of the first motor (5) passes through the outer wall of the housing (1) and is fixedly connected to one end of the bidirectional threaded rod (21).

4. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, An exhaust fan (14) is fixedly installed on the bottom surface of another cavity inside the mounting box (2), and the two sides of the exhaust fan (14) are respectively connected to two cavities.

5. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, A sliding plate (3) is slidably installed on the other side of the box (1). A sleeve (24) is fixedly installed on the outer side wall of the sliding plate (3). A limit block (30) is fixedly installed on the outer side wall of the box (1). The same insert rod (25) is movably connected between the sleeve (24), the sliding plate (3) and the limit block (30).

6. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, The box (1) has six round holes (28) on one side. The six round holes (28) correspond to three pay-off rollers (7) and three take-up rollers (8), respectively. A fixing plate (26) is fixedly installed on one side of each of the three round holes (28). Electric push rods (11) are fixedly installed on both sides of each of the three fixing plates (26). An mounting plate (27) is provided above each of the three fixing plates (26). The two sides of each of the three mounting plates (27) are fixedly connected to the top of the multiple electric push rods (11).

7. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, Two rotating seats (4) are fixedly installed on the top surface of the box (1). Magnets are provided on one side of the interior of the two rotating seats (4). Magnets are provided at the top of the two rotating columns (6). The two rotating columns (6) are magnetically connected to the two rotating seats (4) respectively.

8. The drying equipment for processing flame-retardant fiber yarn according to claim 1, characterized in that, An air outlet is provided on the top surface of the box (1), and an air outlet pipe (29) is fixedly installed inside the air outlet.