Continuous drying device for flame-retardant polyester yarn

Abstract

This application relates to the technical field of flame-retardant yarn manufacturing processes, and in particular to a continuous drying device for flame-retardant polyester yarn. The device includes a drying drum and several drying rollers rotatably connected within the drying drum. Each drying roller has a lifting component, which includes lifting slides spaced circumferentially and lifting blocks disposed on the lifting slides. The lifting blocks are inserted into the underside of the yarn to create a gap. This device achieves the following effect: as the yarn moves onto the drying rollers, the lifting component moves accordingly during yarn transport. The lifting slides move, simultaneously causing the lifting blocks to insert into the underside of the yarn, creating a gap between the underside of the yarn and the drying rollers. Hot air can then pass through this gap and dry the underside of the yarn, thus improving the yarn drying effect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of flame-retardant yarn manufacturing processes, and particularly relates to a continuous drying device for flame-retardant polyester yarn. BACKGROUND

[0002] Yarn is a kind of textile product processed from various textile fibers to a certain fineness, which is used for weaving, rope making, thread making, knitting and embroidery, etc. Yarn is divided into short fiber yarn and continuous filament, etc. According to different fields in which the fabric product is used, the yarn needs to have different properties, such as waterproof, antibacterial, flame-retardant, etc. Since the textile fabric is usually made of flammable materials, the flammable textile fabric can accelerate the spread of fire when a fire occurs. Therefore, in a special occasion, the textile fabric with flame-retardant properties needs to be used to improve the fireproof performance.

[0003] A Chinese patent application with the application number 201410214307.1 discloses a preparation method of flame-retardant yarn, which comprises the following steps: sequentially adding, by weight fraction, in a container: carbamide 10-15 parts, decabromodiphenyl ethane 15-25 parts, diphenyl phosphate 15-17 parts, cellulose ether 12-14 parts, saturated fatty acid salt 5-7 parts, and benzoate 3-5 parts, and stirring thoroughly for a certain time; adding a PH value regulator to adjust the PH value to 7; putting the yarn into the container and soaking for 60-90 minutes; and taking out the soaked yarn and drying at a temperature of 55℃ for 30-60 minutes. Through the above-mentioned method, the preparation method of the flame-retardant yarn can make the yarn have high-efficiency flame-retardant performance by soaking the yarn in the prepared flame-retardant solution, and the method is simple and has high production efficiency.

[0004] In the process of preparing the yarn, the drying device after sizing can modify the yarn to obtain corresponding flame-retardant effect, so the drying effect is very important. However, in general drying devices, the yarn is input into a drying box, passes through the drying roller in a zigzag shape, and is subjected to hot air drying action inside. However, the part of the yarn in contact with the drying roller will be constantly pressed on the surface of the drying roller, so that the drying effect of the side of the yarn close to the surface of the drying roller is reduced, which affects the quality of the subsequent product. SUMMARY

[0005] In order to improve the drying effect of the side of the yarn close to the drying roller, the application provides a continuous drying device for flame-retardant polyester yarn.

[0006] The application provides a continuous drying device for flame-retardant polyester yarn, which adopts the following technical scheme: a continuous drying device for flame-retardant polyester yarn, comprising a drying cylinder and a plurality of drying rollers rotatably connected in the drying cylinder, wherein the drying roller has a lifting component, the lifting component comprises lifting sliding platforms arranged at intervals in the circumferential direction and lifting blocks arranged on the lifting sliding platforms, and the lifting blocks are used for being inserted into the lower side of the yarn to make the lower side of the yarn have a gap.

[0007] By adopting the above technical scheme, when the yarn moves to the drying roller, the lifting piece will move with the drying roller in the process of conveying the yarn, the lifting sliding platform moves while driving the lifting block to be inserted into the lower side of the yarn, so that a gap exists between the lower side of the yarn and the drying roller, hot air can move through the gap and dry the lower side of the yarn, and meanwhile, the lifting component makes the drying roller flush in other states, reduces the possibility of cutting the yarn, and improves the drying effect of the yarn.

[0008] Preferably, the movement directions of the two adjacent lifting components are opposite, and after the lifting sliding platforms move axially inward, the two adjacent lifting sliding platforms make the yarn form a curved shape.

[0009] By adopting the above technical scheme, the curved yarn can be better positioned on the drying roller, better support is formed in the process of blowing hot air, and the wind resistance of the yarn is increased after being lifted under the support of the lifting block.

[0010] Preferably, a plurality of lifting blocks are arranged at intervals in the axial direction, and the yarn passes through between the adjacent lifting blocks.

[0011] By adopting the above technical scheme, the yarn is divided into a plurality of strands and passes through the lifting blocks respectively.

[0012] Preferably, the lifting block comprises a first part and a second part, the first part is parallel to the axial direction of the drying roller, and the second part is inclined upward on one side.

[0013] Preferably, the first part is flush with the outer wall of the drying roller.

[0014] Preferably, a plurality of movable grooves are arranged in the circumferential direction on the drying roller, the movable grooves are embedded and slidably connected with the lifting sliding platforms, and abutting blocks are arranged on both sides of the drying roller, the abutting blocks are used for intermittently abutting the lifting sliding platforms to make the lifting sliding platforms slide to the other side.

[0015] Preferably, the movable grooves have retractable springs for resetting the lifting sliding platforms.

[0016] Preferably, the abutting block is located on the inner wall of the drying cylinder, the yarn covering area is located on the outer half of the arc of the drying roller, the arc top of the yarn covering area is the avoiding area, and the two sides of the avoiding area are the contact areas, and the abutting block is located in the contact area.

[0017] By adopting the above technical scheme, the lifting slide at the top will keep close to the yarn, only part of the yarn is lifted each time, sufficient circumferential support force can be formed, and the yarn can also move back and forth during the back-and-forth movement, so that the drying effect of the yarn is better during the loosening and tightening processes.

[0018] Preferably, the lifting block is provided with a convex block on the back side, the convex block has a convex point outward, and the convex point is used for separating the yarns to keep a gap between the adjacent yarns.

[0019] Preferably, the convex block is provided with a linkage rod, the inner walls on the two sides of the movable groove are provided with linkage grooves for inserting the end portions of the linkage rod, the linkage grooves have horizontal sections and inclined sections, and when the end portions of the linkage rod slide in the inclined sections, the convex block slides outward.

[0020] In summary, the present application has at least one beneficial technical effect: when the yarn moves to the drying roller, the lifting member moves with the drying roller during the conveying of the yarn, the lifting slide moves, and the lifting block is inserted into the lower side of the yarn, so that a gap exists between the lower side of the yarn and the drying roller, hot air can move through the gap and dry the lower side of the yarn, and at other times, the lifting member makes the drying roller flush, reduces the possibility of cutting the yarn, and improves the drying effect of the yarn. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present application;

[0022] Figure 2 is a yarn path schematic diagram of the present application;

[0023] Figure 3 is a structural schematic diagram of the position of the drying roller and the abutting block;

[0024] Figure 4 is a partial exploded view of the drying roller;

[0025] Figure 5 is a schematic diagram of the yarn covering area;

[0026] Figure 6 is a structural schematic diagram of the lifting block;

[0027] Figure 7 is an exploded schematic diagram of the lifting block;

[0028] Figure 8 is Figure 4 is a partial enlarged schematic view of part A in FIG. 1.

[0029] Reference signs: 100, drying cylinder; 110, drying roller; 111, lifting slide; 112, lifting block; 113, first part; 114, second part; 115, movable groove; 116, retraction spring; 117, abutting block; 120, yarn covering area; 121, avoiding area; 122, contact area; 130, convex block; 131, convex point; 132, linkage rod; 133, linkage groove. DETAILED DESCRIPTION

[0030] The application will be further described in detail below with reference to the accompanying drawings.

[0031] The embodiment of the application discloses a continuous drying device for flame-retardant polyester yarn. Figure 1 、 Figure 2 The continuous drying device comprises a drying cylinder 100 and a plurality of drying rollers 110 rotatably connected in the drying cylinder 100, wherein the drying rollers 110 are arranged in a broken line shape in the embodiment, and the drying rollers 110 are provided with lifting components.

[0032] The movement directions of the adjacent two lifting components are opposite, and after the lifting slides 111 move axially inward, the adjacent two lifting slides 111 make the yarn form a curved shape. Specifically, the lifting blocks 112 are arranged at intervals along the axial direction, and the yarn passes through between the adjacent lifting blocks 112. The yarn is generally divided into a plurality of groups, and the yarn in each group will pass through a lifting block 112.

[0033] Referring to Figure 3 、 Figure 4 The lifting block 112 comprises a first part 113 welded on the lifting slide 111 and a second part 114 integrally connected to one end of the first part 113, the first part 113 is parallel to the axial direction of the drying roller 110, and the second part 114 is inclined to one side and arranged upward. It is worth noting that the first part 113 is flush with the outer side wall of the drying roller 110. So that the edge of the first part 113 will not cut the yarn in the sliding process of the lifting block 112.

[0034] The drying roller 110 is provided with a plurality of movable grooves 115 in the circumferential direction, the movable grooves 115 are embedded and slidably connected with the lifting slide 111, the two sides of the drying roller 110 are provided with abutting blocks 117, the abutting blocks 117 are used for intermittent abutting to the lifting slide 111, so that the lifting slide 111 slides towards the other side. When the lifting slide 111 slides towards the other side, the yarn originally located on the first part 113 will slide to the second part 114 along the movement, at this time, there is a section of suspended yarn between the two adjacent second parts 114, so that the drying effect can be formed on the lower side of the yarn.

[0035] At the same time, due to the relative arrangement of the inclined surfaces between the two second parts 114, the yarn will form a slightly curved state during movement, and the yarn will be supported by the second part 114, although the yarn is suspended, but due to the clamping effect on both sides, the wind resistance of the yarn in the hot air can be improved, so that the yarn can maintain good stability.

[0036] Referring to Figure 5 , the movable groove 115 has a retraction spring 116 for resetting the lifting slide 111. The abutting block 117 is located in the inner wall of the drying cylinder 100, the outer one-half arc portion of the drying roller 110 is a yarn covering area 120, the arc top portion of the yarn covering area 120 is a avoiding area 121, and the two sides thereof are contact areas 122, and the abutting block 117 is located in the contact area 122. The end portion of the abutting block 117 and the end portion of the lifting slide 111 are both arc-shaped, and are used for abutting, with the rotation of the drying roller 110, the end portion of the abutting block 117 will abut the end portion of the lifting slide 111, so that the lifting block 112 moves, and after movement, under the action of the retraction spring 116, the yarn will be reset and attached to the surface of the drying roller 110 again.

[0037] At the same time, during the movement, the avoiding area 121 at the top can maintain the contact force on the yarn, so that the yarn can move, and during the sliding of the lifting block 112, the yarn will move in the direction perpendicular to the length of the yarn, so as to form a loose movement, and after being lifted, the yarn can form a better drying effect.

[0038] Referring to Figure 4 , Figure 6 , Figure 7 In order to limit the yarn sliding to the second part 114, the lifting block 112 is provided with a convex top block 130 on the back side, the convex top block 130 has a convex point 131 outward, the convex point 131 is used for separating the yarn, so that the adjacent yarns maintain a gap. The point-shaped end portion of the convex point 131 is originally convex outward from the second part 114, and will pre-separate the yarn, and after the convex point 131 moves upwards, the yarn can be separated to maintain the distance between the yarns.

[0039] Referring to Figure 7 , Figure 8 In order to realize the moving path of the convex block 130, the convex block 130 is provided with a linkage rod 132, the inner walls on both sides of the moving groove 115 are provided with linkage grooves 133 for inserting the end of the linkage rod 132, the linkage grooves 133 have horizontal sections and inclined sections, and when the end of the linkage rod 132 slides in the inclined sections, the convex block 130 moves outward.

[0040] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A continuous drying device for flame-retardant polyester yarns, comprising a drying cylinder (100) and a plurality of drying rollers (110) rotatably connected in the drying cylinder (100), characterized in that: The drying roller (110) has a lifting component, which comprises lifting slides (111) arranged at intervals in the circumferential direction, and lifting blocks (112) arranged on the lifting slides (111) and used for being inserted into the lower side of the yarn so that the lower side of the yarn has a gap. The movement directions of two adjacent lifting components are opposite, and after the lifting slides (111) move axially inward, the two adjacent lifting slides (111) make the yarn form a curved shape. A plurality of lifting blocks (112) are arranged at intervals in the axial direction, and the yarn passes between adjacent lifting blocks (112). The lifting block (112) comprises a first part (113) parallel to the axial direction of the drying roller (110) and a second part (114) inclined to one side and arranged upward. The first part (113) is flush with the outer wall of the drying roller (110). The drying roller (110) is provided with a plurality of movable grooves (115) in the circumferential direction, the movable grooves (115) are embedded and slidably connected with the lifting slides (111), both sides of the drying roller (110) are provided with abutting blocks (117) fixedly connected to the inner wall of the drying cylinder (100), the abutting blocks (117) are used for intermittently abutting the lifting slides (111) to make the lifting slides (111) slide away from the abutting blocks (117). The movable grooves (115) have retractable springs (116) for resetting the lifting slides (111).

2. A continuous drying device for flame retardant polyester yarn as claimed in claim 1, wherein: The outer one-half of the drying roller (110) is a yarn covering area (120), the top of the yarn covering area (120) is an avoidance area (121), and both sides of the yarn covering area (120) are contact areas (122), and the abutting blocks (117) are located in the contact areas (122).

3. A continuous drying device for flame retardant polyester yarn as claimed in claim 2, wherein: The back side of the lifting block (112) is slidably provided with a convex top block (130), the convex top block (130) has a convex point (131) outward, and the convex point (131) is used for separating the yarn to keep a gap between adjacent yarns.

4. A continuous drying device for flame retardant polyester yarn as claimed in claim 3, wherein: The exposed part of the convex top block (130) is provided with a linkage rod (132), the inner walls of both sides of the movable groove (115) have linkage grooves (133) for inserting the end of the linkage rod (132), the linkage grooves (133) have a horizontal section and an inclined section, and when the end of the linkage rod (132) slides in the inclined section, the convex top block (130) slides outward.

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