阅读说明：本技术 一种再生涤纶丝的染色系统及染色工艺 (Dyeing system and dyeing process for regenerated polyester yarns ) 是由 戴明珠 陈雅芹 于 2021-05-21 设计创作，主要内容包括：本发明属于再生涤纶丝加工技术领域,具体的说是一种再生涤纶丝的染色系统及染色工艺,该染色系统包括包括烘燥箱、烘燥通道、收集管、热风炉、导流斜块和染缸；所述烘燥箱分为左箱体和右箱体；所述烘燥通道设置在烘燥箱内部；所述热风炉固连在左箱体侧壁靠近中部位置；本发明通过设置第二压布辊、调整弹簧、滑槽、海绵、橡胶块、挤压块和热风炉,使得纱线在第二压布辊挤压作用和热风炉高温热风作用下除去多余染液,脱水烘干,提高了再生涤纶丝的染色效率；通过设置烘燥通道、导流斜块和收集管,使得烘燥箱内的残留染液和高温热风被充分回收再利用,提高了原料和能源的使用效率,降低了生产能耗。(The invention belongs to the technical field of regenerated polyester yarn processing, and particularly relates to a dyeing system and a dyeing process for regenerated polyester yarns, wherein the dyeing system comprises a drying box, a drying channel, a collecting pipe, a hot blast stove, a flow guide inclined block and a dye vat; the drying box is divided into a left box body and a right box body; the drying channel is arranged in the drying box; the hot blast stove is fixedly connected to the position, close to the middle, of the side wall of the left box body; according to the invention, by arranging the second cloth pressing roller, the adjusting spring, the sliding chute, the sponge, the rubber block, the extrusion block and the hot blast stove, the yarn is subjected to the extrusion action of the second cloth pressing roller and the high-temperature hot blast action of the hot blast stove to remove redundant dye liquor, and is dehydrated and dried, so that the dyeing efficiency of the regenerated polyester yarn is improved; through setting up the stoving passageway, water conservancy diversion sloping block and collecting pipe for residual dye liquor and high temperature hot-blast by abundant recovery reuse in the stoving case, improved the availability factor of raw materials and energy, reduced the production energy consumption.)

1. A dyeing process of regenerated polyester yarns is characterized by comprising the following steps: the dyeing process comprises the following steps:

s1: presetting the regenerated polyester yarn to prevent shrinkage; the regenerated polyester yarns subjected to pre-shaping are wound into cheese with a certain size, shape and density, so that the yarns are not easy to deform and fall off, and the level-dyeing property and the production efficiency of the yarns are improved; before dyeing the polyester cheese, loosening the cheese, then loading the cheese on a yarn bracket, and preparing to enter a cylinder;

s2: guide lines are arranged at the front ends of the yarns (7), and are distributed along the drying channel (2) according to the positions of the first cloth pressing roller (11), the guide roller (12) and the second cloth pressing roller (13); after the arrangement is confirmed to be correct, the right box body (18) is installed on the left box body (17), and the sealing degree of the installation gap between the left box body (17) and the right box body (18) is checked;

s3: starting a power supply, and immersing the yarn into a dye vat (6) for dyeing; the yarn (7) after the dip dyeing is finished enters the drying box (1) from the outlet of a feed section channel (21) on the side wall of the drying box (1); the yarns (7) sequentially pass through a feeding section channel (21), a vertical section channel (22) and a working section channel (24) of the drying channel (2), and residual dye liquor on the yarns (7) is extruded and removed under the extrusion action of a second cloth pressing roller (13) and the drying action of high-temperature hot air of a hot blast stove (4), so that the yarns (7) are dehydrated and dried;

s4: the dried yarn (7) is output from the side wall of the drying box (1) close to the top outlet; meanwhile, residual dye liquor and most of high-temperature hot air in the drying channel (2) flow back to the dye vat (6) and the hot blast stove (4) respectively along the working section channel (24), the vertical section channel (22) and the recovery section channel (23) in sequence, so that the recovery of redundant dye liquor on the yarn (7) and the reutilization of the high-temperature hot air are realized; inspecting the surface quality of the output yarn (7), such as staining or disordered yarn; and finally, packaging qualified products.

2. A dyeing system of regeneration polyester silk which characterized in that: the dyeing system is suitable for the dyeing process of the regenerated polyester yarns in claim 1, and comprises a drying box (1), a drying channel (2), a collecting pipe (3), a hot blast stove (4), a flow guide inclined block (5) and a dye vat (6); the drying box (1) is divided into a left box body (17) and a right box body (18), the left box body (17) is fixed on the ground, and the right box body (18) is movably connected with the left box body (17); the drying channel (2) is arranged in the drying box (1), and the drying channel (2) is divided into a feeding section channel (21), a vertical section channel (22), a recovery section channel (23) and a working section channel (24); the feeding section channel (21) is arranged at the position, close to the middle part, of the drying box (1); a first cloth pressing roller (11) is arranged at the outlet of the feeding section channel (21), and the first cloth pressing roller (11) is rotatably connected with the left box body (17); the vertical section channel (22) is arranged at the end part position far away from the outlet of the feeding section channel (21), and a guide roller (12) is arranged at the joint of the vertical section channel (22) and the feeding section channel (21); the guide roller (12) is rotationally connected with the left box body (17); the recycling section channel (23) is obliquely arranged in the drying box (1) at a position close to the bottom, one end of the recycling section channel (23) is communicated with the bottom end of the vertical section channel (22), and the other end of the recycling section channel is arranged at a position on the side wall of the left box body (17) close to the bottom; the working section channel (24) is arranged in the drying box (1) above the vertical section channel (22), and the working section channel (24) is in a zigzag shape in the drying box (1); the bottom end of the working section channel (24) is communicated with the top end of the vertical section channel (22), and a second cloth pressing roller (13) is arranged at the joint of the working section channel (24) and the vertical section channel (22); the second cloth pressing roller (13) is rotationally connected with the left box body (17); each turning part of the working section channel (24) is provided with a second cloth pressing roller (13); the top end of the working section channel (24) is provided with a first cloth pressing roller (11); an exhaust groove (171) is obliquely arranged in the left box body (17) at a position close to the outlet of the recovery section channel (23), and the exhaust groove (171) is communicated with the recovery section channel (23); the collecting pipe (3) is fixedly arranged at the outlet position of the exhaust groove (171); a stop block (231) is arranged on the upper side surface of the recovery section channel (23) and close to the outlet, and the stop block (231) is fixedly connected with the left box body (17); a gap is reserved between the stop block (231) and the lower side surface of the recovery section channel (23); the hot blast stove (4) is installed on the collecting pipe (3), and the hot blast stove (4) is fixedly connected to the position, close to the middle, of the side wall of the left box body (17); the top end of the collecting pipe (3) is communicated with the position, close to the top end, of the working section channel (24); the flow guide inclined block (5) is fixedly connected to the side wall of the left box body (17) below the outlet of the recovery section channel (23); the dye vat (6) is arranged below the flow guide inclined block (5), and the top end of the side wall of the dye vat (6) is in contact with the bottom surface of the flow guide inclined block (5).

3. The dyeing system of regenerated polyester yarn according to claim 2, characterized in that: the second cloth pressing roller (13) comprises a first roller (131) and a second roller (132), and the first roller (131) and the second roller (132) are fixedly connected to the middle positions of a first shaft (133) and a second shaft (134) respectively; two ends of the first shaft (133) are rotatably connected with the left box body (17); a sliding chute (14) is arranged in the horizontal plane of a second shaft (134) in the left box body (17), and two ends of the second shaft (134) are connected with the inner wall of the sliding chute (14) in a sliding manner; the first shaft (133) and the second shaft (134) form elastic connection through an adjusting spring (135).

4. The dyeing system of regenerated polyester yarn according to claim 3, characterized in that: each first roller (131) surface is fixedly connected with a sponge (136), and the sponge (136) surface is evenly provided with grooves (137).

5. The dyeing system of regenerated polyester yarn according to claim 4, characterized in that: each second roller (132) surface evenly links firmly block rubber (138), and block rubber (138) position and first roller (131) go up recess (137) position of sponge (136) and correspond.

6. The dyeing system of regenerated polyester yarn according to claim 5, characterized in that: the inner wall of the joint of the working section channel (24) and the vertical section channel (22) is fixedly connected with an extrusion block (15) at a position close to the side wall of the first roller (131), and the extrusion block (15) is extruded with a sponge (136) on the first roller (131).

7. The dyeing system of regenerated polyester yarn according to claim 6, characterized in that: the horizontal direction of the joint of the vertical section channel (22) and the feeding section channel (21) is narrowed; a Y-shaped groove (16) is formed above the middle position of a feeding section channel (21) in the left box body (17), and the width of the Y-shaped groove (18) is matched with that of the feeding section channel (21); the collecting pipe (3) is close to the middle part and fixedly connected with a branch pipe (31), and the end part of the branch pipe (31) in the left box body (17) is communicated with the top end of the Y-shaped groove (18).

Technical Field

The invention belongs to the technical field of regenerated polyester yarn processing, and particularly relates to a dyeing system and a dyeing process for regenerated polyester yarns.

Background

The regenerated polyester yarn is produced by spinning waste polyester cloth, waste polyester bottle chips and polyester fiber by means of complete circulation type chemical recovery and regeneration technologyThe production process includes the steps of collecting waste silk, bubble material, pulp block and other material, crushing, washing, drying the mixture of the material, melting, extruding, spinning, winding, bundling, drafting, curling, loosening, heat setting and cutting to form short polyester fiber in different lengths. The length is generally 32mm to 102mm, and the fineness has various specifications from 1.5D to 20D. According to statistics, the recycled polyester can be produced by about 0.98t by using l.00t waste polyester bottles, less 6.00t petroleum and 3m³The landfill space of (2). It has a wide market due to its low cost and good performance. Therefore, the recycling of waste plastics and the production and use of regenerated terylene are inevitable choices for developing the recycling economy and building the resource-saving society. The regenerated polyester staple fiber has many different varieties, such as common fiber, hollow fiber, triangular yarn, flame-retardant fiber and the like, and is generally used in the filling industry of furniture and toys, bedding and clothing industry, the needle cotton industry and the stitch-bonding fabric industry. But the regenerated material has complex components and low elasticity, so that the regenerated material is difficult to dye and has limited application.

The technical scheme that a patent appears about the dyeing apparatus of the low stretch yarn of dacron among the prior art, chinese patent as application number CN2018216694707 discloses the dyeing apparatus of the low stretch yarn of dacron, including the dye vat, the inside of dye vat is angular rotation such as annular and is connected with first live-rollers, second live-rollers and third live-rollers, the inside of dye vat is supporting to be provided with the low stretch yarn body of dacron, and the low stretch yarn body of dacron twines with first live-rollers, second live-rollers and third live-rollers in proper order, the planet wheel has all been welded to the one end that lies in the dye vat outside on first live-rollers, second live-rollers and the third live-rollers. The utility model discloses in, be equipped with first live-rollers, second live-rollers and third live-rollers, the motor drives three live-rollers rotation through master gear and planet wheel to make the dacron low stretch yarn body stretch-draw in turn and relax in the inside of dye vat, be favorable to dacron low stretch yarn body to absorb the dyestuff to inside like this, show the dyeing efficiency that improves dacron low stretch yarn body, reduced the work load of secondary operation; however, the above patent still has the defects that the dye liquor possibly remained in the drying box is not recycled, so that the dye is wasted, and meanwhile, the dye liquor remained in the drying box for a long time can have adverse effects on the operation of the whole device; the hot blast stove in the patent blows air to the inner space of the whole drying box, and the terylene low stretch yarn body only occupies a small part of the inner space of the drying box, thus causing resource waste; so that the technical solution is limited.

In view of this, the present invention provides a dyeing system and a dyeing process for regenerated polyester yarn to solve the above technical problems.

Disclosure of Invention

The invention provides a dyeing system and a dyeing process for regenerated polyester yarns, which aim to make up for the defects of the prior art and solve the problems that residual redundant dye liquor on yarns is not recovered in the existing dyeing process of the regenerated polyester yarns and waste is caused by overlarge useless space in a drying box.

The technical scheme adopted by the invention for solving the technical problems is as follows: a dyeing process of regenerated polyester yarns comprises the following steps:

s1: presetting the regenerated polyester yarn to prevent shrinkage; the regenerated polyester yarns subjected to pre-shaping are wound into cheese with a certain size, shape and density, so that the yarns are not easy to deform and fall off, and the level-dyeing property and the production efficiency of the yarns are improved; before dyeing the polyester cheese, loosening the cheese, then loading the cheese on a yarn bracket, and preparing to enter a cylinder;

s2: installing guide lines at the front ends of the yarns, and arranging the guide lines along the drying channel according to the positions of the first cloth pressing roller, the guide rollers and the second cloth pressing roller; after confirming that the arrangement is correct, mounting the right box body on the left box body, and checking the sealing degree of the mounting gap between the left box body and the right box body;

s3: starting a power supply, and immersing the yarn into a dye vat for dyeing; the yarn after the dip dyeing enters the drying box from the outlet of a channel of a feeding section on the side wall of the drying box; the yarns sequentially pass through a feeding section channel, a vertical section channel and a working section channel of the drying channel, and residual dye liquor on the yarns is extruded and removed under the extrusion action of a second cloth pressing roller and the drying action of high-temperature hot air of a hot blast stove, so that the yarns are dehydrated and dried;

s4: the dried yarns are output from the side wall of the drying box close to the top outlet; meanwhile, residual dye liquor and most of high-temperature hot air in the drying channel respectively flow back to the dye vat and the hot air furnace along the working section channel, the vertical section channel and the recovery section channel in sequence, so that the recovery of redundant dye liquor on the yarns and the reutilization of the high-temperature hot air are realized; inspecting the surface quality of the output yarn, such as staining or disordered yarn; and finally, packaging qualified products.

The dyeing system is suitable for the dyeing process of the regenerated polyester yarns and comprises a drying box, a drying channel, a collecting pipe, a hot blast stove, a flow guide inclined block and a dye vat; the drying box is divided into a left box body and a right box body, the left box body is fixed on the ground, and the right box body is movably connected with the left box body; the drying channel is arranged in the drying box and is divided into a feeding section channel, a vertical section channel, a recovery section channel and a working section channel; the feeding section channel is arranged at the position, close to the middle part, of the drying box; a first cloth pressing roller is arranged at the outlet of the channel of the feeding section and is rotationally connected with the left box body; the vertical section channel is arranged at the end part position far away from the outlet of the feeding section channel, and a guide roller is arranged at the joint of the vertical section channel and the feeding section channel; the guide roller is rotationally connected with the left box body; the recycling section channel is obliquely arranged at a position close to the bottom in the drying box, one end of the recycling section channel is communicated with the bottom end of the vertical section channel, and the other end of the recycling section channel is arranged at a position close to the bottom on the side wall of the left box body; the working section channel is arranged in the drying box above the vertical section channel, and the working section channel is in a zigzag shape in the drying box; the bottom end of the working section channel is communicated with the top end of the vertical section channel, and a second cloth pressing roller is arranged at the joint of the working section channel and the vertical section channel; the second cloth pressing roller is rotationally connected with the left box body; each turning position of the working section channel is provided with a second cloth pressing roller; the top end of the working section channel is provided with a first cloth pressing roller; an exhaust groove is obliquely arranged in the left box body at a position close to the outlet of the recovery section channel, and the exhaust groove is communicated with the recovery section channel; the collecting pipe is fixedly arranged at the outlet of the exhaust groove; a stop block is arranged on the upper side surface of the recovery section channel and close to the outlet, and the stop block is fixedly connected with the left box body; a gap is formed between the stop block and the lower side surface of the recovery section channel; the hot blast stove is fixedly connected to the side wall of the left box body close to the middle part; the top end of the collecting pipe is communicated with the position, close to the top end, of the working section channel; the flow guide inclined block is fixedly connected to the side wall of the left box body below the outlet of the channel of the recovery section; the dye vat is arranged below the flow guide inclined block, and the top end of the side wall of the dye vat is in contact with the bottom surface of the flow guide inclined block.

During operation, the pretreated regenerated polyester yarn is immersed into a dye vat, and the immersed yarn enters the drying box from a feed section channel on the side wall of the left box body; firstly, the yarn is extruded by a first cloth pressing roller at the outlet position of a channel of a feeding section, so that most of redundant dye liquor remained on the yarn is extruded and removed, the extruded dye liquor flows downwards along the side wall of a left box body, and finally flows back to a dye vat along the upper surface of a diversion inclined block; the yarn continuously moves to the vertical section channel and then upwards enters the working section channel through the guide roller; high-temperature hot air generated by the hot-blast stove is injected into the drying channel from the position, close to the top, of the working section channel, and the working section channel is in a zigzag shape in the drying box, so that the movement path of the high-temperature hot air in the drying box is increased, and the yarn drying efficiency by the high-temperature hot air is improved; the high-temperature hot air flows from top to bottom along the working section channel, and the yarns flow from bottom to top along the working section channel, so that the efficiency of yarn dehydration and drying is further improved due to the good reverse heat exchange effect; the bottom end and each turning part of the working section channel are provided with second cloth pressing rollers, and each time the yarn passes through one second cloth pressing roller, part of redundant dye liquor can be extruded under the extrusion of the second cloth pressing roller, namely the more the yarn is close to the outlet at the top end of the drying channel, the less the redundant dye liquor is remained, and the more the hot air temperature is close to the top end of the working section channel, the higher the temperature is, so that the yarn dewatering and drying efficiency is further improved; high-temperature hot air generated by the hot-blast stove flows in the drying channel, so that the temperature in the whole drying channel is raised, and the yarns are deformed under the high-temperature and high-pressure state by the extrusion action of the second cloth pressing roller on the yarns, so that dye molecules in the yarns move fast, the yarns are dyed secondarily, and the dye uptake of the regenerated polyester yarns is improved; a small amount of redundant residual dye liquor extruded by a second cloth pressing roller at the joint of the working section channel and the vertical section channel flows to the top end of the recovery section channel along the vertical section channel; meanwhile, high-temperature hot air flows to the top end of the channel of the recovery section through the channel of the working section and the channel of the vertical section; the redundant residual dye liquor and the high-temperature hot air flow downwards along the inclined recovery section channel, most of the high-temperature hot air finally enters the collection pipe due to the blocking effect of the stop block, and the high-temperature hot air continuously enters the working section channel to participate in circulation under the reheating and supplementing effects of the hot blast stove; the redundant residual dye liquor flows to the upper surface of the diversion inclined block through a gap between the stop block and the lower side surface of the recovery section channel and finally flows back to the dye vat again; and a small part of high-temperature hot air is flushed out through a gap between the stop block and the lower side surface of the recovery section channel and impacts on the yarn which just leaves the dye vat after dip dyeing, so that part of residual dye liquor on the part of the yarn is blown back to the dye vat, the work load of the drying box is reduced, and the work efficiency of the invention is improved.

Preferably, the second cloth pressing roller comprises a first roller and a second roller which are fixedly connected to the middle positions of the first shaft and the second shaft respectively; two ends of the first shaft are rotatably connected with the left box body; a sliding groove is formed in the horizontal plane of the second shaft in the left box body, and two ends of the second shaft are connected with the inner wall of the sliding groove in a sliding manner; the first shaft and the second shaft form elastic connection through an adjusting spring.

When the automatic adjusting device works, when the yarn movement is blocked due to the fact that the extrusion degree between the second cloth pressing rollers is too large, or when the yarn cannot be acted due to the fact that the extrusion degree between the second cloth pressing rollers is too small, the extrusion degree between the second cloth pressing rollers can be automatically adjusted through elastic connection of the adjusting spring between the first shaft and the second shaft; the second shaft is driven to move left or right in the sliding groove by adjusting the stretching or shrinking of the spring, so that the extrusion degree between the second cloth pressing rollers is adjusted, and the working stability of the cloth pressing machine is improved.

Preferably, the surface of each first roller is fixedly connected with a sponge, and the surface of each sponge is uniformly provided with grooves.

When the dyeing machine works, the sponge on the surface of the first roller can absorb part of the dyeing solution on the yarn, so that the removal efficiency of the residual redundant dyeing solution on the yarn is improved; when the second cloth pressing roller extrudes the yarns, the yarns are extruded to be sunk into the sponge, meanwhile, the sponge is extruded and moistened to obtain dye liquor, the dye liquor fully infiltrates the yarns, and the yarns are dyed again under the high-pressure state caused by the high temperature of the drying channel and the high-pressure state caused by the second cloth pressing roller, so that the dye uptake of the regenerated polyester yarns is further improved; and the grooves uniformly distributed on the surface of the sponge play roles of fixing and limiting yarns in the axial direction of the second cloth pressing roller to a certain extent, so that the yarns are prevented from being deviated when being driven by the second cloth pressing roller to influence the working efficiency, and the working stability of the invention is improved.

Preferably, each second roller surface evenly links firmly the block rubber, just the block rubber position corresponds with the recess position of sponge on the roller.

When the cloth pressing device works, the rubber blocks on the second roller can enhance the extrusion degree of the second cloth pressing roller to yarns, so that the working efficiency is further improved; under the matching action of the rubber block and the corresponding position of the groove in the sponge, the fixing and limiting effects of the yarn in the axial direction of the second cloth pressing roller are further enhanced, the yarn is prevented from deviating when being driven by the second cloth pressing roller to influence the working efficiency, and the working stability of the invention is further improved.

Preferably, the position of the inner wall of the joint of the working section channel and the vertical section channel, which is close to the side wall of the first roller, is fixedly connected with an extrusion block, and the extrusion block is extruded with the sponge on the first roller.

When the dyeing machine works, part of sponge absorbing part of redundant residual dye liquor on the second roller continuously rotates and finally contacts with the extrusion block on the side wall of the drying channel, the part of sponge and the extrusion block are fully contacted and extruded to extrude a small amount of residual dye liquor absorbed from yarns, and the extruded dye liquor flows downwards along the inner wall of the vertical section channel close to the extrusion block, so that the recovery efficiency of the dye liquor is improved, the dye liquor is prevented from dripping back to the yarns, and the working efficiency of the dyeing machine is improved.

Preferably, the horizontal direction of the junction of the vertical section channel and the feeding section channel is narrowed; a Y-shaped groove is arranged above the middle position of a channel of the feeding section in the left box body, and the width of the Y-shaped groove is matched with that of the channel of the feeding section; the collecting pipe is fixedly connected with a branch pipe close to the middle part, and the end part of the branch pipe in the left box body is communicated with the top end of the Y-shaped groove.

When the device works, when high-temperature hot air flows through the vertical section channel from top to bottom, the middle part of the vertical section channel is narrowed, the flow speed of the high-temperature hot air flowing through the vertical section channel is increased, the pressure is reduced, negative pressure is formed, part of dye liquor accumulated on the lower surface of the feeding section channel is sucked into the vertical section channel due to the negative pressure effect, and then the dye liquor flows into the recovery section channel along the vertical section channel to participate in dye liquor recovery, so that the recovery efficiency of the dye liquor is improved; meanwhile, the high-temperature hot air in the branch pipe is divided into two parts through the Y-shaped groove and respectively blown off to the two ends of the feed section channel, and the hot air blown off to the outlet of the feed section channel can prevent external air from permeating into the gap between the first cloth pressing rollers on the side wall of the drying box, so that the external air is prevented from entering the drying box to cause adverse effects, and the working stability of the drying box is further improved; the hot air blown out to the joint of the feed section channel and the vertical section channel can push a small part of dye liquor accumulated on the lower surface of the feed section channel inwards, so that the small part of dye liquor falls into the vertical section channel, and the dye liquor is sucked by matching with the negative pressure effect, so that the recovery efficiency of the dye liquor is further improved.

The invention has the following beneficial effects:

1. according to the dyeing system and the dyeing process for the regenerated polyester yarn, provided by the invention, the second cloth pressing roller, the adjusting spring, the sliding chute, the sponge, the rubber block, the extrusion block and the hot blast stove are arranged, so that the yarn is subjected to the extrusion action of the second cloth pressing roller and the high-temperature hot blast action of the hot blast stove to remove redundant dye liquor, and is dehydrated and dried, and the dyeing efficiency of the regenerated polyester yarn is improved.

2. According to the dyeing system and the dyeing process for the regenerated polyester yarns, the drying channel, the flow guide inclined block and the collecting pipe are arranged, so that residual dye liquor and high-temperature hot air in the drying box are fully recycled, the use efficiency of raw materials and energy is improved, and the production energy consumption is reduced.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of the dyeing process of the present invention;

FIG. 2 is a cross-sectional view of a dyeing system according to the present invention;

FIG. 3 is a sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is an enlarged view of a portion of FIG. 3 at C;

FIG. 6 is an enlarged view of a portion of FIG. 5 at D;

in the figure: drying box 1, first cloth pressing roller 11, guide roller 12, second cloth pressing roller 13, first roller 131, second roller 132, first shaft 133, second shaft 134, adjusting spring 135, sponge 136, groove 137, rubber block 138, sliding groove 14, extrusion block 15, Y-shaped groove 16, left box body 17, exhaust groove 171, right box body 18, drying channel 2, feeding section channel 21, vertical section channel 22, recovery section channel 23, stop block 231, working section channel 24, collecting pipe 3, branch pipe 31, hot blast stove 4, diversion inclined block 5, dye vat 6 and yarn 7.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the dyeing process of the regenerated polyester yarn of the present invention comprises the following steps:

s1: presetting the regenerated polyester yarn to prevent shrinkage; the regenerated polyester yarns subjected to pre-shaping are wound into cheese with a certain size, shape and density, so that the yarns are not easy to deform and fall off, and the level-dyeing property and the production efficiency of the yarns are improved; before dyeing the polyester cheese, loosening the cheese, then loading the cheese on a yarn bracket, and preparing to enter a cylinder;

s2: installing guide lines at the front ends of the yarns 7, and arranging the guide lines along the drying channel 2 according to the positions of the first cloth pressing roller 11, the guide roller 12 and the second cloth pressing roller 13; after confirming that the arrangement is correct, mounting the right box 18 on the left box 17, and checking the sealing degree of the mounting gap between the left box 17 and the right box 18;

s3: starting a power supply, and immersing the yarn into the dye vat 6 for dyeing; the yarn 7 after the dip dyeing enters the drying box 1 from the outlet of a feed section channel 21 on the side wall of the drying box 1; the yarns 7 sequentially pass through a feeding section channel 21, a vertical section channel 22 and a working section channel 24 of the drying channel 2, and residual dye liquor on the yarns 7 is extruded and removed under the extrusion action of a second cloth pressing roller 13 and the drying action of high-temperature hot air of the hot blast stove 4, so that the yarns 7 are dehydrated and dried;

s4: the dried yarn 7 is output from the side wall of the drying box 1 close to the top outlet; meanwhile, residual dye liquor and most of high-temperature hot air in the drying channel 2 flow back to the dye vat 6 and the hot air furnace 4 respectively along the working section channel 24, the vertical section channel 22 and the recovery section 23 in sequence, so that the recovery of redundant dye liquor on the yarns 7 and the reutilization of high-temperature hot air are realized; inspecting the surface quality of the output yarn 7, such as staining or raveling; and finally, packaging qualified products.

A dyeing system of regenerated polyester yarns is suitable for the dyeing process of the regenerated polyester yarns and comprises a drying box 1, a drying channel 2, a collecting pipe 3, a hot blast stove 4, a flow guide inclined block 5 and a dye vat 6; the drying box 1 is divided into a left box body 17 and a right box body 18, the left box body 17 is fixed on the ground, and the right box body 18 is movably connected with the left box body 17; the drying channel 2 is arranged in the drying box 1, and the drying channel 2 is divided into a feeding section channel 21, a vertical section channel 22, a recovery section channel 23 and a working section channel 24; the feeding section channel 21 is arranged at the position, close to the middle part, of the drying box 1; a first cloth pressing roller 11 is arranged at the outlet of the feeding section channel 21, and the first cloth pressing roller 11 is rotatably connected with the left box body 17; the vertical section channel 22 is arranged at the end position far away from the outlet of the feeding section channel 21, and a guide roller 12 is arranged at the joint of the vertical section channel 22 and the feeding section channel 21; the guide roller 12 is rotationally connected with the left box body 17; the recycling section channel 23 is obliquely arranged at a position close to the bottom in the drying box 1, one end of the recycling section channel 23 is communicated with the bottom end of the vertical section channel 22, and the other end of the recycling section channel 23 is arranged at a position close to the bottom on the side wall of the left box body 17; the working section channel 24 is arranged in the drying box 1 above the vertical section channel 22, and the working section channel 24 is in a zigzag shape in the drying box 1; the bottom end of the working section channel 24 is communicated with the top end of the vertical section channel 22, and a second cloth pressing roller 13 is arranged at the joint of the working section channel 24 and the vertical section channel 22; the second cloth pressing roller 13 is rotationally connected with the left box body 17; each turning part of the working section channel 24 is provided with a second cloth pressing roller 13; the top end of the working section channel 24 is provided with a first cloth pressing roller 11; an exhaust groove 171 is obliquely arranged in the left box body 17 at a position close to the outlet of the recovery section channel 23, and the exhaust groove 171 is communicated with the recovery section channel 23; the collecting pipe 3 is fixedly arranged at the outlet position of the exhaust groove 171; a stop block 231 is arranged on the upper side surface of the recovery section channel 23 close to the outlet, and the stop block 231 is fixedly connected with the left box body 17; a gap is formed between the stop block 231 and the lower side surface of the recovery section channel 23; the hot blast stove 4 is arranged on the collecting pipe 3, and the hot blast stove 4 is fixedly connected to the side wall of the left box body 17 close to the middle part; the top end of the collecting pipe 3 is communicated with the position, close to the top end, of the working section channel 24; the flow guide inclined block 5 is fixedly connected to the side wall of the left box body 17 below the outlet of the recovery section channel 23; the dye vat 6 is arranged below the flow guide inclined block 5, and the top end of the side wall of the dye vat 6 is in contact with the bottom surface of the flow guide inclined block 5.

During operation, the pretreated regenerated polyester yarn 7 is immersed in the dye vat 6, and the immersed yarn 7 enters the drying box 1 from the feeding section channel 21 on the side wall of the left box body 17; firstly, the yarn 7 is extruded by the first cloth pressing roller 11 at the outlet position of the feed section channel 21, so that most of the redundant dye liquor of the yarn 7 is extruded and removed, and the extruded dye liquor flows downwards along the side wall of the left box body 17 and finally flows back to the dye vat 6 along the upper surface of the diversion sloping block 5; the yarn 7 continues to move to the vertical section passage 22 and then passes through the guide roller 12 and upwards into the working section passage 24; high-temperature hot air generated by the hot-blast stove 4 is injected into the drying channel 2 from the position, close to the top, of the working section channel 24, and the working section channel 24 is in a zigzag shape in the drying box 1, namely, the moving path of the high-temperature hot air in the drying box 1 is increased, so that the efficiency of drying the yarn 7 by the high-temperature hot air is improved; the high-temperature hot air flows from top to bottom along the working section channel 24, and the yarns 7 flow from bottom to top along the working section channel 24, so that the efficiency of dehydrating and drying the yarns 7 is further improved due to the good reverse heat exchange effect; the second cloth pressing roller 13 is arranged at the bottom end and each turning part of the working section channel 24, and each time the yarn 7 passes through one second cloth pressing roller 13, part of redundant dye liquor can be extruded under the extrusion of the second cloth pressing roller 13, namely the residual redundant dye liquor on the yarn 7 close to the outlet at the top end of the drying channel 2 is less, and meanwhile, the temperature of hot air close to the top end of the working section channel 24 is higher, so that the dehydration and drying efficiency of the yarn 7 is further improved; high-temperature hot air generated by the hot-blast stove 4 flows in the drying channel 2, so that the temperature in the whole drying channel 2 is raised, the yarn 7 is deformed under the high-temperature and high-pressure state by matching with the extrusion effect of the second cloth pressing roller 13 on the yarn 7, the dye molecules in the yarn 7 move faster, the yarn 7 is dyed for the second time, and the dye uptake of the regenerated polyester yarns is improved; a small amount of residual dye liquor extruded by the second cloth pressing roller 13 at the joint of the working section channel 24 and the vertical section channel 22 flows to the top end of the recovery section channel 23 along the vertical section channel 22; meanwhile, high-temperature hot air flows to the top end of the recovery section channel 23 through the working section channel 24 and the vertical section channel 22; the redundant residual dye liquor and the high-temperature hot air flow downwards along the inclined recovery section channel 23, most of the high-temperature hot air finally enters the collection pipe 3 due to the blocking effect of the stop block 231, and the high-temperature hot air continues to enter the working section channel 24 to participate in circulation under the reheating and supplementing effects of the hot blast stove 4; the redundant residual dye liquor flows to the upper surface of the diversion inclined block 5 through a gap between the stop block 231 and the lower side surface of the recovery section channel 23 and finally flows back to the dye vat 6 again; and a small part of high-temperature hot air is flushed out through a gap between the stop block 231 and the lower side surface of the recovery section channel 23 and impacts on the yarn 7 which just leaves the dye vat 6 after dip dyeing is completed, so that part of residual dye liquor on the part of the yarn 7 is blown back to the dye vat 6, the workload of the drying box 1 is reduced, and the working efficiency of the invention is improved.

As an embodiment of the present invention, the second cloth pressing roller 13 includes a first roller 131 and a second roller 132, and the first roller 131 and the second roller 132 are respectively fixedly connected to the middle positions of a first shaft 133 and a second shaft 134; the two end parts of the first shaft 133 are rotatably connected with the left box body 17; a sliding chute 14 is arranged in the horizontal plane of a second shaft 134 in the left box body 17, and two end parts of the second shaft 134 are connected with the inner wall of the sliding chute 14 in a sliding manner; the first shaft 133 and the second shaft 134 are elastically connected through an adjusting spring 135.

When the automatic adjusting device works, when the extrusion degree between the second cloth pressing rollers 13 is too large to block the movement of the yarns 7, or the extrusion degree between the second cloth pressing rollers 13 is too small to act on the yarns 7, the extrusion degree between the second cloth pressing rollers 13 can be automatically adjusted through the elastic connection of the adjusting spring 135 between the first shaft 133 and the second shaft 134; the adjusting spring 135 is stretched or contracted to drive the second shaft 134 to move left or right in the chute 14, so that the extrusion degree between the second cloth pressing rollers 13 is adjusted, and the working stability of the cloth pressing machine is improved.

As an embodiment of the invention, a sponge 136 is fixedly connected to the surface of each first roller 131, and grooves 137 are uniformly formed in the surface of the sponge 136.

During operation, the sponge 136 on the surface of the first roller 131 can absorb part of the dye liquor on the yarn 7, so that the removal efficiency of the residual redundant dye liquor on the yarn 7 is improved; when the second cloth pressing roller 13 extrudes the yarns 7, the yarns 7 are extruded to sink into the sponge 136, meanwhile, the sponge 136 is extruded and moistened to form a dye solution, the dye solution fully infiltrates the yarns 7, and the yarns 7 are dyed again under the high-temperature state of the drying channel 2 and the high-pressure state caused by the second cloth pressing roller 13, so that the dye uptake of the regenerated polyester yarns is further improved; and the grooves 137 uniformly distributed on the surface of the sponge 136 play a role in fixing and limiting the yarns 7 in the axial direction of the second cloth pressing roller 13 to a certain extent, so that the yarns 7 are prevented from being deviated when being driven by the second cloth pressing roller 13 to influence the working efficiency, and the working stability of the invention is improved.

As an embodiment of the invention, a rubber block 138 is uniformly attached to the surface of each second roller 132, and the position of the rubber block 138 corresponds to the position of the groove 137 of the sponge 136 on the first roller 131.

When the second roller 132 works, the rubber block 138 on the second roller 132 can enhance the extrusion degree of the second cloth pressing roller 13 to the yarn 7, so that the working efficiency is further improved; under the matching action of the rubber block 138 and the corresponding position of the groove 137 on the sponge 136, the fixing and limiting effects of the yarn 7 in the axial direction of the second cloth pressing roller 13 are further enhanced, the yarn 7 is prevented from deviating when being driven by the second cloth pressing roller 13 to influence the working efficiency, and the working stability of the invention is further improved.

As an embodiment of the invention, a squeezing block 15 is fixedly connected to the position, close to the side wall of the first roller 131, of the inner wall of the joint of the working section channel 24 and the vertical section channel 22, and the squeezing block 15 is squeezed with the sponge 136 on the first roller 131.

During operation, the sponge 136 absorbing part of the residual dye liquor on the second roller 132 continuously rotates and finally contacts the extrusion block 17 on the side wall of the drying channel 2, the sponge 136 is fully contacted and extruded with the extrusion block 17 to extrude a small amount of residual dye liquor absorbed from the yarn 7, and the extruded dye liquor flows downwards along the inner wall of the vertical section channel 22 close to the extrusion block 17, so that the recovery efficiency of the dye liquor is improved, the dye liquor is prevented from dropping back to the yarn 7, and the working efficiency of the dyeing machine is improved.

As an embodiment of the present invention, the horizontal direction of the vertical passage 22 at the junction with the feed passage 21 is narrowed; a Y-shaped groove 16 is arranged above the middle position of a feed section channel 21 in the left box body 17, and the width of the Y-shaped groove 16 is matched with that of the feed section channel 21; and a branch pipe 31 is fixedly connected to the position, close to the middle part, of the collecting pipe 3, and the end part, in the left box body 17, of the branch pipe 31 is communicated with the top end of the Y-shaped groove 16.

When the device works, when high-temperature hot air flows through the vertical section channel 22 from top to bottom, the middle part of the vertical section channel 22 is narrowed, the flow speed of the high-temperature hot air flowing through the vertical section channel is increased, the pressure is reduced, negative pressure is formed, part of dye liquor accumulated on the lower surface of the feeding section channel 21 is sucked into the vertical section channel 22 due to the negative pressure effect, and then flows into the recovery section channel 23 along the vertical section channel 22 to participate in dye liquor recovery, namely, the recovery efficiency of the dye liquor is improved; meanwhile, the high-temperature hot air in the branch pipe 31 is divided into two parts through the Y-shaped groove 16 and respectively blown off to the two ends of the feeding section channel 21, and the hot air blown out to the outlet of the feeding section channel 21 can prevent external air from permeating into the gap between the first cloth pressing rollers 11 on the side wall of the drying box 1, so that the external air is prevented from entering the drying box 1 to cause adverse effects, and the working stability of the invention is further improved; the hot air blown out to the joint of the feed section channel 21 and the vertical section channel 22 can push a small part of dye liquor accumulated on the lower surface of the feed section channel 21 inwards, so that the small part of dye liquor falls into the vertical section channel 22, and the dye liquor is sucked by matching with the negative pressure effect, so that the recovery efficiency of the dye liquor is further improved.

The specific working process is as follows:

immersing the pretreated regenerated polyester yarn 7 into a dye vat 6, and enabling the yarn 7 after dip dyeing to enter the drying box 1 from a feeding section channel 21 on the side wall of the left box body 17; firstly, the yarn 7 is extruded by the first cloth pressing roller 11 at the outlet position of the feed section channel 21, so that most of redundant dye liquor on the yarn 7 is extruded and removed, the extruded dye liquor flows downwards along the side wall of the left box body 17, and finally flows back to the dye vat 6 along the upper surface of the diversion sloping block 5; the yarn 7 continues to move to the vertical section passage 22 and then passes through the guide roller 12 and upwards into the working section passage 24; high-temperature hot air generated by the hot-blast stove 4 is injected into the drying channel 2 from the position of the working section channel 24 close to the top; the two end parts and each turning part of the working section channel 24 are provided with the second cloth pressing rollers 13, and each time the yarn 7 passes through one second cloth pressing roller 13, part of redundant residual dye liquor can be extruded under the extrusion of the second cloth pressing rollers 13, namely, the residual redundant dye liquor on the yarn 7 close to the top end outlet of the drying channel 2 is less, and the temperature of hot air close to the top end of the working section channel 24 is higher, so that the dehydration and drying efficiency of the yarn 7 is further improved; when the extrusion degree between the second cloth pressing rollers 13 is too large to block the movement of the yarns 7, or the extrusion degree between the second cloth pressing rollers 13 is too small to act on the yarns 7, the first shaft 133 and the second shaft 134 are elastically connected through the adjusting spring 135, so that the extrusion degree between the second cloth pressing rollers 13 can be automatically adjusted; the adjusting spring 135 stretches or contracts to drive the second shaft 134 to move left or right in the chute 14, so that the extrusion degree between the second cloth pressing rollers 13 is adjusted, and the working stability of the cloth pressing machine is improved; the sponge 136 on the surface of the first roller 131 can absorb part of the dye liquor on the yarn 7, so that the removal efficiency of the residual dye liquor on the yarn 7 is improved; when the second cloth pressing roller 13 extrudes the yarns 7, the yarns 7 are extruded to sink into the sponge 136, meanwhile, the sponge 136 is extruded and moistened to form a dye solution, the dye solution fully infiltrates the yarns 7, and the yarns 7 are dyed again under the high-temperature state of the drying channel 2 and the high-pressure state caused by the second cloth pressing roller 13, so that the dye uptake of the regenerated polyester yarns is further improved; under the matching action of the rubber block 138 and the corresponding position of the groove 137 on the sponge 136, the fixing and limiting effects of the yarn 7 in the axial direction of the second cloth pressing roller 13 are further enhanced, the yarn 7 is prevented from deviating when being driven by the second cloth pressing roller 13 to influence the working efficiency, and the working stability of the invention is further improved. The sponge 136 on the second shaft 134 absorbing part of the residual dye liquor continuously rotates and finally contacts with the extrusion block 15 on the side wall of the drying channel 2, the sponge 136 is fully contacted and extruded with the extrusion block 15 to extrude the dye liquor, and the extruded dye liquor continuously flows downwards along the drying channel 2, so that the recovery efficiency of the dye liquor is improved; a small amount of extruded dye liquor flows downwards along the inner wall of the vertical section channel 22 close to the extrusion block 15 and flows to the top end of the recovery section channel 23 through the vertical section channel 22; meanwhile, high-temperature hot air flows to the top end of the recovery section channel 23 through the working section channel 24 and the vertical section channel 22; the redundant residual dye liquor and the high-temperature hot air flow downwards along the inclined recovery section channel 23, finally most of the high-temperature hot air enters the collection pipe 3, and under the reheating and supplementing effects of the hot blast stove 4, the high-temperature hot air continues to enter the working section channel 24 to participate in circulation; when high-temperature hot air flows through the vertical section passage 22 from top to bottom, the middle part of the vertical section passage 22 is narrowed, the flow speed of the high-temperature hot air flowing through the vertical section passage is increased, the pressure is reduced, negative pressure is formed, and part of dye liquor accumulated on the lower surface of the feeding section passage 21 is sucked into the vertical section passage 22 due to the negative pressure effect; meanwhile, the high-temperature hot air in the branch pipe 31 is divided into two parts through the Y-shaped groove 16 and respectively blown off to the two ends of the feeding section channel 21, and the hot air blown out to the outlet of the feeding section channel 21 can prevent the external air from permeating into the gap between the first cloth pressing rollers 11 on the side wall of the drying box 1, so that the external air is prevented from entering the drying box 1 to cause adverse effects; the hot air blown out to the joint of the feed section channel 21 and the vertical section channel 22 can push part of the dye liquor accumulated on the lower surface of the feed section channel 21 inwards, so that the part of the dye liquor falls into the vertical section channel 22, and the dye liquor is sucked by matching with the negative pressure effect, thereby further improving the recovery efficiency of the dye liquor. The redundant residual dye liquor flows to the upper surface of the diversion inclined block 5 through a gap between the collecting pipe 3 and an outlet of the recovery section channel 23 and finally flows back to the dye vat 6 again; and a small part of high-temperature hot air is flushed out through a gap between the stop block 231 and the lower side surface of the recovery section channel 23 and impacts on the yarn 7 which just leaves the dye vat 6 after dip dyeing is completed, so that part of residual dye liquor on the part of the yarn 7 is blown back to the dye vat 6, the workload of the drying box 1 is reduced, and the working efficiency of the invention is improved. According to the dyeing system and the dyeing process for the regenerated polyester yarn, the second cloth pressing roller 13, the adjusting spring 135, the sliding chute 14, the sponge 136, the rubber block 138, the extrusion block 15 and the hot air furnace 4 are arranged, so that the yarn 7 is subjected to the extrusion action of the second cloth pressing roller 13 and the high-temperature hot air action of the hot air furnace 4 to remove redundant dye liquor, and is dehydrated and dried, and the dyeing efficiency of the regenerated polyester yarn is improved; through setting up the stoving passageway 2, water conservancy diversion sloping block 5 and collecting pipe 3 for residual dye liquor and high temperature hot-blast by abundant recovery reuse in the stoving case 1, improved the availability factor of raw materials and energy, reduced the production energy consumption.

The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.