Spinning device for preparing flame-retardant fibers

Abstract

The invention relates to the technical field of spinning, in particular to a spinning device for preparing flame-retardant fibers, which comprises a base and a fixing mechanism, the inner top of the base is provided with a conveyor belt assembly, the fixing mechanism comprises a fixing box slidably connected to the bottom of a sliding frame, and a spinning nozzle is located in the fixing box; a plurality of arc-shaped guide pieces are fixedly connected to the inner walls of the two opposite sides of the fixing box, and a flame retardant spraying mechanism used for spraying flame retardant powder to the sprayed filaments and a flame retardant recycling mechanism used for recycling redundant flame retardant powder in the sprayed filaments are arranged on the other two sides of the fixing box correspondingly; the flame retardant spraying mechanism comprises a spraying box fixedly communicated to the side face of the fixing mechanism. Through the spraying assembly, the cooling assembly and the air guide assembly in the flame retardant spraying mechanism, the fibers just sprayed out by the spinning device can be gradually cooled and sprayed with flame retardant powder, the key problem in fiber processing is effectively solved, and the efficiency and the product quality of the whole production process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of fiber preparation, and in particular to a spinning device for preparing flame-retardant fibers. Background Art

[0002] The spinneret extrude the molten material into fibers by a melting method. The spinneret used for preparing flame-retardant fibers is usually called a "spinneret" or a "spinneret". It is used to extrude the molten fiber material through multiple nozzles to form elongated fibers, such as a device and method for preparing ultra-fine denier flame-retardant polyester filaments disclosed in Chinese patent publication number CN117051485A.

[0003] Existing spinnerets for preparing flame-retardant fibers usually add flame retardants through two methods: modification and coating. The modification of flame retardants is usually done by directly mixing the flame retardants into the fiber raw materials during the fiber production process, while the coating of flame retardants is done by coating the flame retardant on the fiber surface to form a protective film after the fiber is formed.

[0004] Among them, the coating method of adding flame retardants can form a protective layer on the fiber surface, thereby improving the flame retardant performance and avoiding the migration or loss of flame retardants in the fiber, and is widely used. The existing equipment cools down the fiber filaments sprayed by the spinneret and then coats the flame retardant by spraying and immersion. Among them, when the flame retardant is applied by spraying, since the fiber filaments at this time are cooled fibers, and the surface of the fiber filaments will become smoother and drier after cooling, the adhesion of the flame retardant will be weakened, thereby affecting the flame retardant effect. At the same time, the surface of the fiber filaments after cooling will become uneven, resulting in difficulty in achieving uniform coverage when the flame retardant is sprayed or applied, resulting in insufficient flame retardant performance of the fiber filaments locally, thereby affecting the flame retardant effect of the entire fiber filaments. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a spinneret for preparing flame-retardant fibers, which can effectively solve the problem in the prior art that the fiber filaments sprayed by the spinneret are cooled before adding flame retardants, thereby weakening the adhesion of the flame retardant and affecting the flame retardant effect.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a spinning device for preparing flame-retardant fibers, comprising: A base, a conveyor belt assembly is arranged on the inner top of the base, a slide is fixedly connected to the top of the base, a spinneret is slidably connected to the bottom of the slide, and the spinneret is fixedly connected to a spinneret for providing raw materials, and further comprises: A fixing mechanism, the fixing mechanism comprising a fixing box slidably connected to the bottom of the slide, and the spinneret is located in the fixing box, the inner walls on both sides of the fixing box are fixedly connected with a plurality of arc-shaped guide plates, and the inner walls on the other two sides of the fixing box are respectively provided with a flame retardant spraying mechanism for spraying flame retardant powder on the spinneret and a flame retardant recovery mechanism for recovering excess flame retardant powder in the spinneret; The flame retardant spraying mechanism includes a spray box fixedly connected to the side of the fixing mechanism, a pair of spray assemblies for spraying flame retardant powder are symmetrically arranged in the upper and lower inner middle part of the spray box, an air guide assembly for buffering the spraying airflow is arranged in the inner middle part of the spray box and on the opposite sides of the pair of spray assemblies, and a cooling assembly for providing cold air for cooling the spinneret is arranged on the inner wall corresponding to the air guide assembly of the spray box.

[0007] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1. The flame-retardant fiber preparation spinneret can cool down the fiber filaments just ejected from the spinneret through the spraying assembly, cooling assembly and air guide assembly in the flame retardant spraying mechanism, wherein the cooling assembly can convert the absorbed natural wind into cold wind for cooling the fiber filaments, and the air guide assembly can reduce the wind speed of the wind flow cooled by the cooling assembly, thereby avoiding the cooling wind flow directly acting on the fiber filaments and causing the fiber filaments to fall in a relatively chaotic manner, affecting the subsequent spraying assembly to spray the flame retardant powder on the fiber filaments. The combination of the cooling assembly and the air guide assembly has obvious advantages in improving the flame retardant adhesion effect, reducing the disorder of the fiber filaments, optimizing the production process, stabilizing the flame retardant effect, reducing the production cost and improving the fiber quality.

[0008] 2. The spinneret device for preparing flame-retardant fibers can spray the flame retardant powder from the flame retardant spraying mechanism into the fiber filaments through the absorption tube and the first detector, and the excess flame retardant powder can be recovered to achieve the reuse of the flame retardant powder. At the same time, it can also avoid the large accumulation of flame retardant powder in a certain area of ​​the fiber filament, resulting in uneven distribution of the flame retardant powder in the fiber filament. The first detector can detect the airflow and powder distribution when the absorption tube absorbs the flame retardant powder. The recovery and monitoring of the flame retardant through the absorption tube and the first detector can effectively improve the utilization efficiency of the flame retardant, optimize the distribution uniformity of the flame retardant, reduce waste and environmental impact, enhance the control accuracy of the production process, and improve product quality and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic structural diagram of the overall side of the present invention; Figure 3 It is a structural schematic diagram of the slide of the present invention; Figure 4 It is a structural schematic diagram of the fixing mechanism of the present invention; Figure 5 It is a structural schematic diagram of the spray assembly of the present invention; Figure 6 It is a schematic diagram of the structure inside the spray assembly of the present invention; Figure 7 It is a structural schematic diagram of the air guide assembly of the present invention; Figure 8 It is a structural schematic diagram of the spray assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the cooling assembly of the present invention; Fig.10 It is a structural schematic diagram of the recovery mechanism of the present invention; Fig.11 It is a structural schematic diagram of the internal recovery mechanism of the present invention; Fig.12 It is a schematic diagram of the structure inside the storage mechanism of the present invention; Fig.13 It is a structural schematic diagram of the wind flow box of the present invention; Fig.14 It is a schematic structural diagram of the crushing assembly of the present invention.

[0011] Reference numerals: 1, base; 11, conveyor belt assembly; 12, carriage; 13, spinneret; 2. Fixing mechanism; 21. Fixing box; 22. Arc-shaped guide piece; 3. Flame retardant spraying mechanism; 31. Spraying box; 32. Spraying assembly; 321. Airbag bag; 322. Connecting block; 323. Inclined plate; 324. Arc tube; 3241. Spray hole; 3242. Telescopic slot; 3243. Telescopic column; 33. Three-way valve; 34. Measuring ball; 35. First telescopic tube; 36. Connecting tube; 37. Cooling assembly; 371. Mounting box; 372. First square hole; 373. Cooling pipe; 374. Diverter slot; 38. Wind guide assembly; 381. Fixed column; 382. Connecting rod; 383. Force plate; 384. Airflow bowl; 39. Spraying box protective plate; 391. Holes; 310. Exhaust fan; 4. Flame retardant recovery mechanism; 41. Recovery box; 42. Absorption tube; 421. Circular hole; 422. Square slot; 43. First detector; 44. Second telescopic tube; 45. Recovery box protection plate; 46. Converging tube; 5. Flame retardant storage mechanism; 51. Storage box; 52. Power assembly; 521. Powder suction pump; 522. Output pipe; 523. Input pipe; 53. Wind box; 531. Rotating fan; 54. Crushing assembly; 541. Rotating column; 542. Force cone; 543. Crushing knife; 55. Porous partition plate; 56. Eddy current fan; 57. Second detector; 58. Feeding pipe; 59. Indicator light; 510. Recovery pipe. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] The present invention will be further described below in conjunction with the embodiments.

[0014] Example: Refer to Figures 1 to 14 , a spinning device for preparing flame-retardant fibers, comprising: The invention comprises a base 1, a conveyor belt assembly 11 is arranged on the inner top of the base 1, a slide 12 is fixedly connected to the top of the base 1, a spinneret 13 is slidably connected to the bottom of the slide 12, and the spinneret 13 is fixedly connected to a spinneret for providing raw materials, and further comprises: The fixing mechanism 2 includes a fixing box 21 slidably connected to the bottom of the slide 12, and the spinneret 13 is located in the fixing box 21. The inner walls on both sides of the fixing box 21 are fixedly connected with a plurality of arc-shaped guide pieces 22. The inner walls on both sides of the fixing box 21 are respectively provided with a flame retardant spraying mechanism 3 for spraying flame retardant powder on the spinneret and a flame retardant recovery mechanism 4 for recovering excess flame retardant powder in the spinneret. The flame retardant spraying mechanism 3 comprises a spray box 31 fixedly connected to the side of the fixing mechanism 2, a pair of spraying components 32 for spraying flame retardant powder are symmetrically arranged in the middle of the spray box 31, an air guide component 38 for buffering the spraying airflow is arranged in the middle of the spray box 31 and on the opposite sides of the pair of spray components 32, and a cooling component 37 for providing cold air for cooling the spinneret is arranged on the inner wall corresponding to the air guide component 38 of the spray box 31; The fixing mechanism 2 can be used to spatially limit the fiber filaments sprayed by the spinneret 13. At the same time, the fixing mechanism 2 can also fix the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4, so that the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4 can move accordingly with the movement of the spinneret 13, thereby ensuring that the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4 can always act on the fiber filaments sprayed by the spinneret 13.

[0015] Reference Figures 5 and 6 The spray assembly 32 includes a plurality of airbag bags 321 that are connected to each other and are arranged in a linear array along the length direction of the spray box 31. A side of each airbag bag 321 facing the fixed box 21 is symmetrically fixedly connected to a pair of inclined plates 323. Each airbag bag 321 is located on the opposite side of the pair of inclined plates 323 and is fixedly connected to an arc tube 324. The arc surface of the arc tube 324 is arranged toward the fixed box 21. A plurality of spray holes 3241 and a plurality of telescopic grooves 3242 are alternately opened on the arc surface of the arc tube 324. Both sides of the arc tube 324 are fixedly connected to telescopic columns that are fixedly connected to the inner wall of the spray box 31. 3243, the air bag 321 near the inner wall of the spray box 31 is fixedly connected with a connecting block 322, and the mutual surfaces of the connecting block 322 are fixedly connected with a connecting pipe 36, and the outer wall of the spray box 31 is fixedly connected with a three-way valve 33, and the two output ends of the three-way valve 33 are respectively fixedly connected with two metering balls 34 of different sizes through pipelines, the small metering ball 34 is fixedly connected with the air bag 321 at the top of the spray box 31 through the pipeline, and the large metering ball 34 is fixedly connected with the air bag 321 at the bottom of the spray box 31 through the pipeline, and the input end of the three-way valve 33 is fixedly connected with a first telescopic tube 35.

[0016] By utilizing the elasticity of the airbag bag 321 in the spray assembly 32, the airbag bag 321 can change to different degrees when facing different contents of flame retardant powder, and the flame retardant powder transmitted in the airbag bag 321 will be further transferred to the arc tube 324, and then the flame retardant powder will be sprayed into the fiber filaments through the spray hole 3241 in the arc tube 324. The expansion groove 3242 in the arc tube 324 can ensure that the arc tube 324 has elasticity, so that the length of the arc tube 324 can be extended accordingly with the change of the airbag bag 321.

[0017] Reference Figures 6 to 9 , and also includes a cooling component 37, the cooling component 37 includes an installation box 371 fixedly connected to the inner wall of the spray box 31, a cooling pipe 373 is fixedly connected inside the installation box 371, and a pair of first square holes 372 and a group of flow grooves 374 are symmetrically opened up and down on one side of the installation box 371 facing the air guide component 38, each pair of first square holes 372 has multiple and linear arrays opened on one side of the installation box 371, and a group of flow grooves 374 have multiple and linear arrays opened on one side of the installation box 371.

[0018] The cooling tube 373 in the cooling assembly 37 can be used to cool the wind flow, thereby enhancing the cooling effect on the fiber filaments, and through the first square hole 372 and the diversion groove 374, different degrees of air flow effects on the fiber filaments can be achieved, thereby achieving different cooling effects on different areas of the fiber filaments.

[0019] Reference Figures 5 to 9 The air guide assembly 38 includes a fixed column 381 rotatably connected to the inner walls of both sides of the spray box 31, and a plurality of groups of connecting rods 382 are linearly arrayed on the outer peripheral surface of the fixed column 381. Each group of connecting rods 382 is annularly arrayed on the outer peripheral surface of the fixed column 381. One end of each connecting rod 382 away from the fixed column 381 is fixedly connected to a force plate 383 facing the spray box 31 in an inclined direction, and a side of the force plate 383 away from the fixed column 381 is fixedly connected to a plurality of air flow bowls 384; A spray box protection plate 39 and a pair of exhaust fans 310 corresponding to the position of the cooling assembly 37 are respectively provided on both sides of the spray box 31, and the spray box protection plate 39 faces the spray box 31. The side of the spray box protection plate 39 is provided with multiple groups of holes 391 corresponding to the spray assembly 32 and the air guide assembly 38.

[0020] By utilizing the air guide component 38, the airflow after cooling by the cooling component 37 can be buffered, thereby reducing the flow velocity of the airflow after cooling, and the airflow after deceleration can be sprinkled through the force plate 383 and the airflow bowl 384, thereby avoiding a violent collision between the airflow and the fiber filaments, thereby causing the fiber filaments to shake greatly, thereby causing the fiber filaments to adhere to each other.

[0021] Reference Figure 10 to Figure 11 It also includes a flame retardant recovery mechanism 4, which includes a recovery box 41 fixedly connected to the side of the fixing mechanism 2, a pair of absorption tubes 42 for recovering flame retardant powder are symmetrically arranged in the middle of the recovery box 41, a first detector 43 for detecting the state of flame retardant powder recovery is arranged in the middle of the recovery box 41 and on the opposite side of the pair of absorption tubes 42, a recovery box protection plate 45 is fixedly connected to the side of the recovery box 41 facing the fixing box 21, and a plurality of square holes are opened in a rectangular array on the side of the recovery box protection plate 45; The outer surface of the absorption tube 42 is staggered with circular holes 421 and square grooves 422. The side of the recovery box 41 away from the fixed box 21 is fixedly connected to a connecting tube 46. The input ends of the connecting tube 46 respectively pass through the recovery box 41 and are connected to a pair of absorption tubes 42. The output end of the connecting tube 46 is fixedly connected to the second telescopic tube 44.

[0022] The absorption tube 42 and the confluence tube 46 can be used to absorb and recover the excess flame retardant powder sprayed into the fiber filaments from the spray assembly 32, thereby avoiding the local accumulation of the flame retardant powder in the fiber filaments, which would cause the flame retardant powder to be unevenly distributed in the fiber filaments and thus affect the flame retardant effect of the fiber filaments.

[0023] Reference Figure 12 to Figure 13 , further comprising a flame retardant storage mechanism 5, the flame retardant storage mechanism 5, the flame retardant storage mechanism 5, the flame retardant storage mechanism 5 comprises a storage box 51 fixedly connected to the side of the base 1, a power component 52 is arranged on the top of the storage box 51, and an air flow box 53, a plurality of crushing components 54 and a porous partition plate 55 are arranged on the inner wall of the storage box 51 from top to bottom; The power assembly 52 includes a powder suction pump 521 fixedly connected to the top of the storage box 51, and the output end and input end of the powder suction pump 521 are respectively fixedly connected with an output pipe 522 and an input pipe 523, and the end of the output pipe 522 away from the powder suction pump 521 is fixedly connected to the first telescopic tube 35, and the end of the input pipe 523 away from the powder suction pump 521 passes through the storage box 51 and is connected to the wind flow box 53. The wind flow box 53 has a rectangular array on a side facing the interior of the storage box 51, and a rotating fan 531 is rotatably connected in each hole.

[0024] By utilizing the wind box 53 and crushing assembly 54 in the storage box 51, the recovered or replenished flame retardant powder can be crushed before spraying, thereby avoiding the flame retardant powder from agglomerating in the storage box 51, thereby affecting the spraying effect of the spray assembly 32 on the flame retardant powder.

[0025] Reference Fig.14The crushing assembly 54 includes a rotating column 541 rotatably connected to the inner wall of the storage box 51, and both ends of the outer circumference of the rotating column 541 are fixedly connected with a plurality of force cones 542 in a circular array, and the outer circumference of the rotating column 541 is fixedly connected with a plurality of groups of crushing knives 543 in a linear array, and each group of crushing knives 543 is fixed to the outer circumference of the rotating column 541 in a circular array.

[0026] By utilizing the force cone 542 in the crushing assembly 54, the flow force generated when the flame retardant powder is transmitted can be converted into the power of the rotation of the rotating column 541, thereby driving the crushing knife 543 to rotate. The rotating crushing knife 543 can crush the flame retardant powder, thereby preventing the agglomerated flame retardant powder from entering the spray assembly 32, thereby causing the spray assembly 32 to be blocked, and further affecting the subsequent spraying effect of the spray assembly 32.

[0027] Reference Figure 1 , Fig.12 The inner bottom of the storage box 51 is rotatably connected with multiple vortex fans 56 and is provided with a second detector 57. The opposite sides of the storage box 51 are fixedly connected with a feeding pipe 58 and a recovery pipe 510. The end of the recovery pipe 510 away from the storage box 51 is fixedly connected with the second telescopic pipe 44. The side of the storage box 51 is fixedly connected with an indicator light 59.

[0028] By utilizing the vortex fan 56 in the storage box 51, it is possible to prevent the flame retardant powder from accumulating at the bottom of the storage box 51, thereby affecting the flow effect of the flame retardant powder in the storage box 51. The second detector 57 in the storage box 51 can detect the suction of the power component 52 on the flame retardant powder in the storage box 51, thereby determining the spraying state of the spray component 32.

[0029] The working principle of the present invention is as follows: The first step: first start the equipment, and as the equipment starts, the conveyor belt assembly 11 starts to work. At the same time, the raw material equipment (the raw material equipment is the prior art, so it is not drawn in the figure) starts to provide the raw material for making fiber filaments to the spinneret 13 (the spinneret 13 is the prior art, and the spinneret 13 extrude the molten or dissolved raw material (such as plastic or synthetic fiber) through a small nozzle hole to form fiber filaments, and the spinneret 13 is provided with a horizontal driver for driving the spinneret 13 to slide in the carriage 12 and a motor for driving the spinneret 13 to rotate), and as the raw material for making fiber filaments continuously enters the spinneret 13, the horizontal driver in the spinneret 13 starts to start, thereby driving the spinneret 13 to do horizontal reciprocating motion in the carriage 12, and the spinneret 13 starts to rotate at a low speed; As the spinneret 13 works, the fixed box 21 which is also arranged in the slide 12 also starts to make horizontal reciprocating motion along the slide 12 (a horizontal drive is also arranged in the fixed box 21), and the horizontal reciprocating motion of the fixed box 21 always maintains the same speed as the movement of the spinneret 13. As the spinneret 13 and the fixed box 21 work, the fiber filaments sprayed by the spinneret 13 will be sprayed into the conveyor belt assembly 11 in a rotating manner (the fiber filaments are sprayed in a rotating manner because the spinneret 13 is in a rotating state during the spinning process), and the rotating fiber filaments are more conducive to the subsequent spraying assembly 32 to spray the flame retardant powder on them comprehensively (when the fiber filaments are in a rotating state, the surface of the fiber filaments will be exposed to the spraying area in a more uniform manner. This rotational motion helps to ensure that the flame retardant powder can be more evenly distributed on various surfaces and corners of the fiber filaments, avoiding the accumulation or omission of the flame retardant).

[0030] When the spinneret 13 starts to spray the fiber filaments, the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4 start to start synchronously; As the flame retardant spraying mechanism 3 is started, the flame retardant powder stored in the flame retardant storage mechanism 5 will be transferred to the three-way valve 33 through the first telescopic tube 35 (the flame retardant powder will be referred to as powder later, and the first telescopic tube 35 will be extended or contracted as the fixed box 21 moves in the slide 12), and the three-way valve 33 will transfer the powder to two metering balls 34, one large and one small, for storage. The small metering ball 34 will further transfer the powder to the spraying assembly 32 located above the spraying box 31. As the powder in the small metering ball 34 enters the multiple airbag bags 321 of the spraying assembly 32, the airbag bags 321 that were originally in a contracted state will begin to expand (the degree of expansion of the airbag bags 321 is determined by the amount of powder in the metering ball 34. The larger the volume of the metering ball 34, the more powder is stored). The more the airbag bags 321 are, the greater the expansion degree of the airbag bag 321 is. On the contrary, the smaller the volume of the metering ball 34 is, the less the amount of powder stored is, and the smaller the expansion degree of the airbag bag 321 is). Since the airbag bag 321 provides a flexible and stable transmission method, the powder can be prevented from being vibrated or impacted during transportation, ensuring the uniformity and consistency of the powder when it arrives at the destination. At the same time, the airbag bag 321 can accurately control the conveying speed and quality of the powder, thereby improving the control accuracy of the production process. As the multiple airbag bags 321 expand, the lengths of the multiple airbag bags 321 in the spray box 31 are also extended. The extension of the airbag bag 321 makes the powder more evenly distributed in the bag, which helps to prevent the aggregation or agglomeration of the powder. At the same time, the extended airbag bag 321 provides a larger space to accommodate more powder, thereby increasing the amount of powder transmitted each time. As the airbag bag 321 extends, the arc tube 324 that is fixedly connected to each airbag bag 321 also extends. The reason why the arc tube 324 extends is that a plurality of expansion slots 3242 are provided in the arc tube 324. When the airbag bag 321 extends, the spacing between the expansion slots 3242 in the arc tube 324 begins to increase, thereby extending the arc tube 324. At the same time, the powder transmitted through the airbag bag 321 will be sprayed into the fiber filaments just extruded from the spinneret 13 through the spray holes 3241 in the arc tube 324 (the fiber filaments just extruded from the spinneret 13 have a higher temperature). Since the powder sprayed into the fiber filaments at this time comes from the small metering ball 34, the powder sprayed into the fiber filaments is limited. Therefore, the spraying assembly 32 located above the spray box 31 is responsible for the pretreatment of the fiber filaments for the attachment of powder. Since the surface of the hot fiber filaments is relatively soft, spraying powder can improve the adhesion between the powder and the fiber filaments. At the same time, because the spinneret 13 is in a rotating state when working, as the length of the fiber filaments continues to increase, the fiber filaments are prone to adhesion. Spraying a small amount of powder can form a protective layer on the surface of the fiber filaments, thereby preventing the fiber filaments from bonding during subsequent processing, thereby improving the effect of subsequent comprehensive spraying of powder on the fiber filaments, and the inclined plate 323 can limit the direction of the powder sprayed by the arc tube 324, so that the powder sprayed in the arc tube 324 can act more on the fiber filaments.

[0031] Among them, after the spraying assembly 32 above the spray box 31 completes the pretreatment of spraying powder on the fiber filaments just extruded (the fiber filaments at this time have a relatively high temperature), the fiber filaments enter the cooling assembly 37 in the spray box 31, and the cooling assembly 37 can cool the fiber filaments. When the fiber filaments enter the area of ​​the cooling assembly 37, the exhaust fan 310 starts to suck the outside air into the cooling assembly 37. When the outside air enters the cooling assembly 37, it will first contact the cooling pipe 373 in the cooling assembly 37. The cooling pipe 373 can cool the outside air (the cooling pipe 373 uses the heat conduction effect to cool the outside air), and the cooled outside air is discharged through the diverter slot 374 and the first square hole 372 in the installation box 371 respectively. The outside air discharged from the first square hole 372 (the outside air hereafter is cooled outside air), and the design of the first square hole 372, can help the outside air to act more evenly on the air guide component 38, and the outside air discharged from the diversion groove 374 can achieve the diversion effect on the outside air, so that the outside air can be more easily captured by the airflow bowl 384 in the air guide component 38 (the role of the airflow bowl 384 in capturing the outside air is introduced below) and act on the fiber filaments, thereby achieving a cooling effect on the fiber filaments.

[0032] Among them, the outside air cooled by the cooling component 37 will be decelerated by the air guide component 38, so as to prevent the outside air from directly acting on the fiber filaments, thereby causing the fiber filaments to shake to a large extent in the fixed box 21, thereby increasing the risk of adhesion between the fiber filaments. When the outside air acts on the air guide component 38, the force disk 383 will first block the outside air, thereby converting part of the force of the outside air into the force of the force disk 383 to rotate, and then the connecting rod 382 will rotate in the spray box 31 through the force disk 383. As the force disk 383 rotates, the airflow bowl 384 will capture the air discharged from the diverter slot 374. Outside air (the outside air discharged from the first square hole 372 is mainly used to promote the rotation and cooling of the force disk 383 and the connecting rod 382, ​​thereby reducing the energy loss of the outside air discharged from the diverter groove 374), and the airflow bowl 384 can collect the outside air discharged from the diverter groove 374 in the airflow bowl 384, and use the throwing force generated when the force disk 383 rotates to throw the outside air collected in the airflow bowl 384 into the fiber filaments. The design of the airflow bowl 384 can evenly distribute the outside air to the surface of the fiber filaments, thereby providing more precise cooling, avoiding overheating and adhesion of the fiber filaments in non-cooling areas, and reducing the risk of local overheating.

[0033] Among them, the fiber filaments that have been cooled will pass through the spray assembly 32 below the spray box 31, and the working process of the spray assembly 32 below the spray box 31 is consistent with the working process of the spray assembly 32 above. The metering ball 34 that provides powder to the lower airbag bag 321 is a large metering ball 34, so the powder transported to the lower spray assembly 32 is more than the powder in the upper spray assembly 32, and the lower spray assembly 32 is responsible for spraying powder on the fiber filaments comprehensively.

[0034] Step 2: As the flame retardant spraying mechanism 3 continuously sprays powder on the fiber filaments, the flame retardant recovery mechanism 4 is responsible for recovering the excess powder in the fiber filaments into the flame retardant storage mechanism 5, and the flame retardant recovery mechanism 4 evenly disperses the suction force into the two absorption tubes 42 through the second telescopic tube 44, and the absorption tube 42 can complete the recovery of the powder that cannot be attached to the fiber filaments through the circular holes 421 and the square grooves 422 opened on the surface; The circular hole 421 helps to evenly distribute and flow the powder. The circular hole has a smooth edge, and the powder will not form obvious accumulation at the edge of the hole, reducing the risk of clogging. The circular hole design can often provide a stable flow rate and uniform adsorption effect when absorbing powder.

[0035] The square groove 422 can provide a larger surface area for the retention and distribution of the powder. The right-angled edges of the square groove 422 help the powder to stay in the groove. The groove design helps to locate and manage the powder, reducing the scattering of powder outside the groove.

[0036] Among them, the first detector 43 in the flame retardant recovery mechanism 4 is responsible for detecting the flow rate and content of the powder entering the recovery box 41 (the first detector 43 is composed of a fan blade, a speed detector and a powder detector, wherein the speed detector is used to detect the speed of rotation of the fan blade when it is hit by the powder, and the powder detector is used to detect the content of the powder entering the recovery box 41), so as to judge the state of the powder sprayed by the flame retardant spraying mechanism 3, because the stability of the flow rate and content of the powder directly reflects the uniformity of the spraying. If the flow rate and content are consistent, it indicates that the spraying mechanism is working normally and the spraying effect is uniform. Unstable flow rate may indicate uneven spraying, and insufficient or excessive content may indicate inaccurate spraying amount, and the detection results are transmitted to the controller (the controller is a prior art, so it is not drawn in the figure. In addition, the conveyor belt assembly 11, spinneret 13, fixing mechanism and other components that need to be electrically driven are all controlled by the controller).

[0037] Step 3: The powder recovered in the flame retardant recovery mechanism 4 will enter the storage box 51 in the flame retardant storage mechanism 5 for storage, so as to achieve the recycling and reuse of the powder, and the storage box 51 is also provided with a feeding pipe 58, and the feeding pipe 58 can additionally replenish the storage box 51 with powder. When the powder enters the storage box 51, it will first enter the bottom of the storage box 51, and the interior of the storage box 51 is divided into an upper and lower part by a porous partition plate 55. At this time, the powder is stored in the lower part of the storage box 51, and a second detector 57 and a vortex fan 56 are provided in the lower part of the storage box 51 (the second detector 57 has the same structure as the first detector 43), and the second detector 57 is mainly used to detect the remaining content of the powder in the storage box 51, and the flow rate of the powder when the powder is adsorbed in the storage box 51, thereby forming a contrast with the first detector 43. , thereby determining whether the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4 have fiber filaments blocking the flame retardant spraying mechanism 3 and the flame retardant recovery mechanism 4 during the spraying and recovery of powders, and the vortex fan 56 can rotate by utilizing the suction force generated when absorbing the powder in the storage box 51. As the vortex fan 56 rotates, the powder stored at the bottom of the storage box 51 will be stirred and pushed to redistribute the powder at the bottom of the box, thereby avoiding the accumulation of flame retardant powder at the bottom of the storage box 51, thereby affecting the flow effect of the flame retardant powder in the storage box 51, and the second detector 57 in the storage box 51 can detect the suction force of the power component 52 on the flame retardant powder in the storage box 51, thereby determining the spraying state of the spray component 32, and prompting through the indicator light 59, thereby reminding the staff to perform manual intervention.

[0038] Among them, of course, when the powder is absorbed into the upper part of the storage box 51 through the porous partition plate 55, the crushing component 54 located in the upper part of the storage box 51 can recover or replenish the flame retardant powder and perform a crushing effect before spraying, so as to avoid the flame retardant powder from agglomerating in the storage box 51, thereby affecting the spraying effect of the spray component 32 on the flame retardant powder, and the force cone 542 in the crushing component 54 can convert the flow force generated when the flame retardant powder is transmitted into the power of the rotation of the rotating column 541, thereby driving the crushing knife 543 to rotate, and the rotating crushing knife 543 can crush the flame retardant powder to avoid the agglomerated flame retardant powder from entering the spray component 32, thereby causing the spray component 32 to be blocked, and further affecting the subsequent spraying effect of the spray component 32, and the powder processed by the crushing component 54 will be transmitted to the first telescopic tube 35 of the flame retardant spraying mechanism 3 through the powder suction pump 521, thereby completing the process of replenishing the flame retardant spraying mechanism 3 with powder.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spinning device for preparing flame-retardant fibers, comprising a base (1), a conveyor belt assembly (11) being arranged at the inner top of the base (1), a slide (12) being fixedly connected to the top of the base (1), a spinneret (13) being slidably connected to the bottom of the slide (12), and the spinneret (13) being fixedly connected to a spinneret for providing raw materials, characterized in that: Also includes: A fixing mechanism (2), the fixing mechanism (2) comprising a fixing box (21) slidably connected to the bottom of the slide (12), the spinneret (13) being located in the fixing box (21), a plurality of arc-shaped guide plates (22) being fixedly connected to two opposite inner walls of the fixing box (21), and a flame retardant spraying mechanism (3) for spraying flame retardant powder on the spinneret and a flame retardant recovery mechanism (4) for recovering excess flame retardant powder in the spinneret respectively being provided on the other two inner walls of the fixing box (21); The flame retardant spraying mechanism (3) comprises a spray box (31) fixedly connected to a side of the fixing mechanism (2); a pair of spray assemblies (32) for spraying flame retardant powder are symmetrically arranged in the middle of the spray box (31) in an upper and lower manner; an air guide assembly (38) for buffering the spraying airflow is arranged in the middle of the spray box (31) and on opposite sides of the pair of spray assemblies (32); and a cooling assembly (37) for providing cold air for cooling the spinneret is arranged on the inner wall corresponding to the air guide assembly (38) of the spray box (31).

2. A spinning device for preparing flame-retardant fibers according to claim 1, characterized in that: The spray assembly (32) comprises a plurality of airbag bags (321) which are arranged in a linear array along the length direction of the spray box (31) and are interconnected. A surface of each of the airbag bags (321) facing the fixed box (21) is symmetrically fixedly connected to a pair of inclined plates (323). The airbag bags (321) are located on opposite surfaces of the pair of inclined plates (323) and are fixedly connected to an arc tube (324). The arc surface of the arc tube (324) is arranged toward the fixed box (21). A plurality of spray holes (3241) and a plurality of telescopic grooves (3242) are alternately provided on the arc surface of the arc tube (324). Telescopic columns (3243) which are fixedly connected to the inner wall of the spray box (31) are fixedly connected to both sides of the arc tube (324). ), the air bag (321) near the inner wall of the spray box (31) is fixedly connected to a connecting block (322), the mutual surfaces of the connecting blocks (322) are fixedly connected to a connecting pipe (36), the outer wall of the spray box (31) is fixedly connected to a three-way valve (33), the two output ends of the three-way valve (33) are respectively fixedly connected to two metering balls (34) of different sizes through pipelines, the small metering ball (34) is fixedly connected to the upper air bag (321) in the spray box (31) through the pipeline, and the large metering ball (34) is fixedly connected to the lower air bag (321) in the spray box (31) through the pipeline, and the input end of the three-way valve (33) is fixedly connected to a first telescopic pipe (35).

3. A spinning device for preparing flame-retardant fibers according to claim 1, characterized in that: The cooling assembly (37) further comprises a cooling assembly (37), the cooling assembly (37) comprising a mounting box (371) fixedly connected to the inner wall of the spray box (31), a cooling pipe (373) fixedly connected inside the mounting box (371), a pair of first square holes (372) and a group of flow diversion grooves (374) symmetrically arranged in the upper and lower sides of a side of the mounting box (371) facing the air guide assembly (38), each pair of the first square holes (372) having a plurality of them arranged in a linear array on one side of the mounting box (371), and a group of the flow diversion grooves (374) having a plurality of them arranged in a linear array on one side of the mounting box (371).

4. A spinning device for preparing flame-retardant fibers according to claim 1, characterized in that: The air guide assembly (38) comprises a fixed column (381) rotatably connected to the inner walls of both sides of the spray box (31); the outer peripheral surface of the fixed column (381) has a plurality of groups of connecting rods (382) in a linear array; each group of the connecting rods (382) is annularly arrayed on the outer peripheral surface of the fixed column (381); one end of each connecting rod (382) away from the fixed column (381) is fixedly connected to a force plate (383) facing the spray box (31) in an inclined direction; and one side of the force plate (383) away from the fixed column (381) is fixedly connected to a plurality of airflow bowls (384); A spray box protection plate (39) and a pair of exhaust fans (310) corresponding to the positions of the cooling components (37) are respectively arranged on both sides of the spray box (31), and the spray box protection plate (39) faces the spray box (31). The side of the spray box protection plate (39) is provided with a plurality of groups of holes (391) corresponding to the spray components (32) and the air guide components (38).

5. The spinning device for preparing flame-retardant fiber according to claim 1, characterized in that: It also includes a flame retardant recovery mechanism (4), the flame retardant recovery mechanism (4) including a recovery box (41) fixedly connected to a side of the fixing mechanism (2), a pair of absorption tubes (42) for recovering flame retardant powder being symmetrically arranged in the middle of the recovery box (41) in the upper and lower parts, a first detector (43) for detecting the state of flame retardant powder recovery being arranged in the middle of the recovery box (41) and on the opposite side of the pair of absorption tubes (42), a recovery box protection plate (45) being fixedly connected to a side of the recovery box (41) facing the fixing box (21), and a plurality of square holes being provided in a rectangular array on the side of the recovery box protection plate (45); The outer circumferential surface of the absorption tube (42) is staggeredly provided with circular holes (421) and square grooves (422); a side of the recovery box (41) away from the fixed box (21) is fixedly connected to a confluence tube (46); the input ends of the confluence tube (46) respectively penetrate the recovery box (41) and are connected to a pair of absorption tubes (42); and the output end of the confluence tube (46) is fixedly connected to a second telescopic tube (44).

6. A spinning device for preparing flame-retardant fibers according to claim 1, characterized in that: The flame retardant storage mechanism (5) is also included, the flame retardant storage mechanism (5) comprising a storage box (51) fixedly connected to the side of the base (1), a power component (52) being arranged on the top of the storage box (51), and an air flow box (53), a plurality of crushing components (54) and a porous partition plate (55) being arranged on the inner wall of the storage box (51) in sequence from top to bottom; The power assembly (52) comprises a powder suction pump (521) fixedly connected to the top of the storage box (51); the output end and the input end of the powder suction pump (521) are respectively fixedly connected to an output pipe (522) and an input pipe (523); the end of the output pipe (522) away from the powder suction pump (521) is fixedly connected to the first telescopic pipe (35); the end of the input pipe (523) away from the powder suction pump (521) passes through the storage box (51) and is connected to the wind flow box (53); a rectangular array of multiple holes is formed on a surface of the wind flow box (53) facing the interior of the storage box (51), and a rotating fan (531) is rotatably connected to each hole.

7. A spinning device for preparing flame-retardant fibers according to claim 6, characterized in that: The crushing assembly (54) comprises a rotating column (541) rotatably connected to the inner wall of the storage box (51); a plurality of force cones (542) are fixedly connected in an annular array at both ends of the outer circumference of the rotating column (541); a plurality of groups of crushing knives (543) are fixedly connected in a linear array to the outer circumference of the rotating column (541); each group of crushing knives (543) is fixed in an annular array to the outer circumference of the rotating column (541).

8. A spinning device for preparing flame-retardant fibers according to claim 7, characterized in that: The inner bottom of the storage box (51) is rotatably connected to a plurality of vortex fans (56) and is provided with a second detector (57); opposite sides of the storage box (51) are respectively fixedly connected to a feeding pipe (58) and a recovery pipe (510); one end of the recovery pipe (510) away from the storage box (51) is fixedly connected to the second telescopic pipe (44); and an indicator light (59) is fixedly connected to the side of the storage box (51).

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