CN108893815B - production method of polyester sewing thread - Google Patents
production method of polyester sewing thread Download PDFInfo
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- CN108893815B CN108893815B CN201810891071.3A CN201810891071A CN108893815B CN 108893815 B CN108893815 B CN 108893815B CN 201810891071 A CN201810891071 A CN 201810891071A CN 108893815 B CN108893815 B CN 108893815B
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- hollow shaft
- polyester
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- pipe
- evaporation cylinder
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Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/46—Sewing-cottons or the like
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Drying Of Solid Materials (AREA)
Abstract
the invention belongs to the technical field of textile, in particular to a production method of polyester sewing thread; the method comprises the following steps: taking a raw material polyester chip, and putting the polyester chip into a polyester chip continuous dryer for rapid drying and dewatering; enabling polyester chips to enter a screw to melt and spin at 290 ℃, injecting 0.5-10% of color master batch in the spinning process, and spinning colored silk threads through a spinneret plate; spraying oil to the silk threads to reduce friction and static electricity in subsequent processing; the silk threads enter a roller heated to 92 ℃ for stretching orientation, and then are coiled into a spinning cake after being shaped by another group of hot rollers at 120 ℃; the silk threads of the spinning cake are subjected to straight twisting and sanding treatment to produce sewing threads; the invention can effectively improve the production efficiency and the output quality of sewing threads.
Description
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a production method of a polyester sewing thread.
background
The sewing thread is required by the knitted clothing product, and can be divided into three types of natural fiber, synthetic fiber sewing thread and mixed sewing thread according to raw materials. With the development of the polyester industry, sewing threads are increasingly made of pure polyester fibers. The polyester fiber is a synthetic fiber with excellent quality, the strength of the prepared suture is high, the suture is second to the nylon thread in various sutures, and the strength of the suture is not reduced in a wet state. The shrinkage rate of the sewing machine is low, and the shrinkage is less than 1% after proper shaping, so that the sewn stitches can always keep flat, straight and beautiful without shrinkage. The wear resistance is second to that of nylon. Low moisture regain, high heat resistance, low temperature resistance, light resistance and water resistance. Therefore, the polyester thread is a very wide variety and replaces cotton sewing thread in many occasions. The polyester thread has wide application, can be used for clothing sewing of cotton fabrics, chemical fiber fabrics and blended fabrics, and can also be used for sewing knitted outer garments. The special polyester yarn is also an excellent yarn for the shoe and cap leather industry. Therefore, the production method of the polyester sewing thread takes pure polyester fiber as a raw material, and promotes the development of industries related to sewing threads, such as clothes, shoes, hats, leather and the like.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a production method of a polyester sewing thread, and aims to improve the production efficiency and the output quality of the polyester sewing thread. According to the invention, the polyester chips are continuously dried by the polyester chip continuous dryer, so that the production efficiency of sewing threads is improved; by adding the color master batch in the production of spinning, the produced sewing thread is colored, the mode that the traditional sewing thread is dyed after thread forming is changed, and the production efficiency of the sewing thread is improved; meanwhile, after the colored silk threads are spun, oil solution is sprayed on the silk threads, so that the abrasion and the static electricity generation of the silk threads in the subsequent processing are reduced; the silk threads are stretched and oriented at high temperature through the rollers, so that the strength of the silk threads is improved, and the strength of produced sewing threads is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a production method of polyester sewing thread, comprising the following steps:
The method comprises the following steps: taking raw material polyester slices, and putting the polyester slices into a polyester slice continuous dryer for rapid drying and dewatering, wherein the water content is controlled to be less than 30 PPM;
Step two: after the polyester chips are dried in the first step, the polyester chips are put into a screw to be melted and spun at 290 ℃, 0.5 to 10 percent of color master batch is injected in the spinning process, and colored silk threads are spun through a spinneret plate;
Step three: after the colored silk threads are spun in the second step, spraying an oiling agent on the silk threads to reduce the friction and static electricity in the subsequent processing;
Step four: after the oil injection of the silk thread is finished in the third step, the silk thread enters a roller heated to 92 ℃ for stretching orientation, the strength of the silk thread is increased, and the silk thread is shaped by another group of hot rollers at 120 ℃ and then is wound into a spinning cake;
step five: after the silk thread is wound into a spinning cake in the fourth step, the silk thread of the spinning cake is subjected to straight twisting and sanding treatment to produce sewing thread;
The polyester chip continuous dryer in the first step comprises an evaporation cylinder, a steam extraction module, a stirring module, a dispersion net, a material receiving funnel and a blast impeller, wherein the temperature in the evaporation cylinder is higher than 80 ℃, and a feeding hole is formed in the upper end of the evaporation cylinder; the steam extraction module is positioned at the upper part of the evaporation cylinder and is used for extracting steam evaporated on the polyester chips in the evaporation cylinder; the stirring module is fixed on the evaporation cylinder, is close to the steam extraction module, and is used for stirring the polyester chips thrown into the evaporation cylinder and extracting steam evaporated on the polyester chips; the dispersing net is positioned below the feeding hole, the meshes of the dispersing net are larger than the polyester chips, so that the polyester chips are easy to leak from the dispersing net, and the dispersing net is used for dispersing the polyester chips released from the feeding hole, so that the water vapor on the polyester chips is favorably evaporated; the receiving hopper is positioned below the stirring module, the first steam through holes are distributed on the receiving hopper, the diameter of the first steam through holes is smaller than the minimum section length of the polyester chips, the receiving hopper is used for receiving the dried polyester chips, the polyester chips entering from the feeding port can directly fall on the receiving hopper after passing through the dispersing net and the stirring module, and the dried polyester chips are sent out through the receiving hopper, so that the polyester chips are dried and kept continuous; the air blowing impeller is positioned below the material receiving funnel, the air blowing impeller is used for blowing hot air into the evaporation cylinder from bottom to top, the hot air penetrates through the material receiving funnel through the first steam through hole, and the hot air enables water vapor on the polyester chips to evaporate and rise more quickly; wherein the content of the first and second substances,
the stirring module comprises a low-speed motor, a speed reducer, a hollow shaft, a shaft sleeve, a first steam extraction pipe and a first air extraction pump, wherein the low-speed motor is fixed at the upper end of the evaporation cylinder, a rotating shaft of the low-speed motor is connected with the hollow shaft through the speed reducer, and the low-speed motor is used for driving the hollow shaft to rotate; the lower part of the hollow shaft is provided with stirring blades, the middle part of the hollow shaft is provided with an anti-backflow hole, and the upper part of the hollow shaft is provided with a steam extraction hole; the shaft sleeve is sleeved at the upper part of the hollow shaft, the lower part of the shaft sleeve is fixed with the evaporation cylinder, the shaft sleeve is communicated with the hollow shaft through the steam extraction hole, and water vapor in the hollow shaft enters the shaft sleeve through the steam extraction hole; the first air pump is fixed on the outer wall of the evaporation cylinder and pumps water vapor in the shaft sleeve through the first air pumping pipe; prevent that the refluence hole is provided with a plurality ofly, prevent that the refluence hole equipartition is between axle sleeve lower extreme and stirring vane, the steam part in the evaporation cylinder gets into in the hollow shaft through preventing the refluence hole. When the device works, the polyester chips are fed from the feeding hole, the polyester chips fall into the dispersion net, the polyester chips stacked on the dispersion net are automatically spread, and the polyester chips are spread and leak through meshes of the dispersion net; during the falling process of the polyester chips, water vapor on the polyester chips is continuously evaporated, and the hollow shaft is driven to rotate by the low-speed motor, so that the polyester chips are stirred by the stirring blades, and the evaporation of the water vapor on the polyester chips is accelerated; meanwhile, the first air extraction pump generates negative pressure in the hollow shaft through the first air extraction pipe and the shaft sleeve; the hollow shaft extracts water vapor close to the hollow shaft through the backflow preventing hole, so that most of the water vapor evaporated by the polyester chips on the lower part directly enters the hollow shaft instead of upwards evaporating to penetrate through the polyester chips on the upper part, and the moisture of the evaporated polyester chips is reduced; the backflow-preventing hole is used for preventing water vapor at the lower end of the hollow shaft from rising and gathering in the hollow shaft and then overflowing from other same holes again.
the anti-backflow hole comprises a first through hole, an anti-backflow shell and a first inclined plate, and the first through hole penetrates through the shaft wall of the hollow shaft; the anti-backflow shell is fixed on the curved inner wall of the hollow shaft and is positioned at one end part of the through hole, and the anti-backflow shell is large in lower end and small in upper end, so that water vapor at the lower end of the hollow shaft cannot flow into the anti-backflow shell to overflow in the rising process; the first inclined plate is arranged at the upper part of the backflow prevention shell and is used for preventing water drops attached to the inner wall of the hollow shaft from entering the backflow prevention shell. When the anti-backflow shell works, water vapor is gradually accumulated and ascended in the hollow shaft, part of the water vapor is attached to the inner wall of the hollow shaft and is condensed into water drops, the water drops flow downwards along the inner wall of the hollow shaft, and when the water drops flow through the inclined plate, the water drops flow downwards along the inclined plate, so that the water drops are prevented from entering the anti-backflow shell; meanwhile, the backflow-preventing hole prevents water vapor at the lower end of the hollow shaft from overflowing from other same holes again after rising and gathering in the hollow shaft and attaching to the polyester chips on the upper side, and the drying difficulty of the polyester chips is increased.
the steam extraction module comprises a second air extraction pump, a second steam extraction pipe and a steam extraction cover, and the steam extraction cover is fixed on the inner wall of the evaporation cylinder; one end of the second steam extraction pipe is communicated with the second steam extraction pump, and the other end of the second steam extraction pipe is communicated with the steam extraction cover; and the second air pump is fixed at the upper end of the evaporation cylinder and used for pumping water vapor in the evaporation cylinder through the second steam pumping pipe and the steam pumping cover. When the device works, the second air extracting pump is started, the second air extracting pump extracts the upwards floating water vapor in the evaporation cylinder through the second air extracting pipe and the second air extracting cover, the water vapor is extracted from the top end of the evaporation cylinder through the second air extracting pump, the separation speed of the water vapor and the polyester chips can be increased, and the drying speed of the polyester chips is increased.
the bottom end edge of the hollow shaft is provided with a plurality of hoses and hard pipes, the hard pipes are positioned in the hollow shaft, the hard pipes are not in contact with the inner wall of the hollow shaft, and the length of the hard pipes is not shorter than two decimeters; the hose is located the hollow shaft, the hose with through hard tube and hollow shaft intercommunication, it is the same with anti-backflow orifice structure to have arranged a plurality of inlet ports and inlet port on the hose, the hose follows the hollow shaft and rotates. The during operation, the hollow shaft rotates, and the hollow shaft drives the hose and rotates, and the hose stirs on dacron polyester chip, makes the steam on the dacron polyester chip change the come-up and scatter, simultaneously, has the negative pressure in the hollow shaft for negative pressure has been produced in the hose, and the hose passes through the inlet port and goes up steam extraction with the dacron polyester chip around the hose, makes steam can not float again on the dacron polyester chip and adhere to other dacron polyester chips, has improved the dry speed of dacron polyester chip.
the bottom central authorities of hollow shaft have arranged stereoplasm water leakage pipe, and the stereoplasm water receiving pipe has been arranged to the below of hollow shaft, and the upper end and the stereoplasm water leakage pipe coaxial line of stereoplasm water receiving pipe, and the internal diameter of stereoplasm water receiving pipe is greater than the external diameter of stereoplasm water leakage pipe, and the tip cover of stereoplasm water receiving pipe is on the outer wall of stereoplasm water leakage pipe, and the stereoplasm water receiving pipe is fixed in on the inner wall of evaporation cylinder through the mount that sets up, and the other end of stereoplasm water receiving pipe extends to outside the evaporation cylinder, and the tip. When the water-saving device works, water vapor is gradually accumulated and ascended in the hollow shaft, part of the water vapor is attached to the inner wall of the hollow shaft and is condensed into water drops, and the water drops flow downwards along the inner wall of the hollow shaft, so that some water is accumulated at the bottom of the hollow shaft; therefore, the bottom of the hollow shaft is provided with the hard water leaking pipe, the lower end of the hollow shaft is provided with the hard water receiving pipe, when water drops in the hollow shaft fall to the bottom, the water drops flow downwards into the hard water receiving pipe along the hard water leaking pipe, and the hard water leaking pipe and the hard water receiving pipe are in non-contact, so that the water drops in the hollow shaft flow towards the hard water receiving pipe under the condition that the hollow shaft keeps rotating, and the loss of negative pressure in the hollow shaft can be reduced by closing the water valve.
A ventilating shield is arranged between the hollow shaft and the stirring blades; the air-permeable shield is sleeved on the outer wall of the hollow shaft; the stirring blade is fixed on the breathable shield. During operation, ventilative guard shield can be separated the dacron polyester chip of hollow shaft stirring and the hollow shaft outer wall, has avoided dacron polyester chip and the contact of hollow shaft outer wall and has made the ability of hollow shaft extraction steam weaken to improved the ability of hollow shaft extraction steam, simultaneously, had ventilative guard shield, can make more steam gather outside the hollow shaft, made things convenient for the extraction of hollow shaft to steam, thereby made the dacron polyester chip dry rapidly, improved the sliced drying rate of dacron polyester.
and the inner wall of the evaporation cylinder is provided with a plurality of microwave generators. During operation, the microwave generator works to enable air in the evaporation cylinder to vibrate, so that the polyester chips are indirectly vibrated, water vapor on the polyester chips can be separated quickly, the drying speed of the polyester chips is increased, and the efficiency of the polyester chip continuous dryer for drying the polyester chips is improved.
The invention has the following beneficial effects:
1. According to the production method of the polyester sewing thread, provided by the invention, the polyester slices are continuously dried by the polyester slice continuous dryer, so that the production efficiency of the sewing thread is improved; by adding the color master batch in the production spinning, the produced sewing thread is colored, the traditional mode that the sewing thread is dyed after being threaded is changed, and the production efficiency of the sewing thread is improved; meanwhile, after the colored silk threads are spun, oil solution is sprayed on the silk threads, so that the abrasion and the static electricity generation of the silk threads in the subsequent processing are reduced; the silk threads are stretched and oriented at high temperature through the rollers, so that the strength of the silk threads is improved, and the strength of produced sewing threads is improved.
2. According to the production method of the polyester sewing thread, water vapor at the upper end of the evaporation cylinder is extracted through the air extraction module, so that the concentration of the water vapor in the evaporation cylinder is kept low, and the efficiency of drying polyester slices is facilitated; the polyester chips entering from the feed inlet are dispersed through the dispersing net, so that the polyester chips are better dried; the air blowing impeller blows air to the evaporation cylinder, so that the water vapor in the evaporation cylinder floats upwards, and the air exhaust module is favorable for quickly extracting the water vapor at the upper end of the evaporation cylinder.
3. according to the production method of the polyester sewing thread, the anti-backflow holes are formed in the hollow shaft, so that water vapor at the lower end of the hollow shaft is prevented from overflowing from the anti-backflow holes at the upper end after rising and gathering in the hollow shaft, the possibility that polyester chips above the hollow shaft are wetted by the overflowing water vapor is avoided, and the efficiency of the polyester chip continuous dryer for drying the polyester chips is improved.
4. According to the production method of the polyester sewing thread, the hose is arranged outside the hollow shaft, and the rotating hollow shaft drives the hose to rotate, so that the hose is stirred on the polyester slices, water vapor on the polyester slices is easier to float and disperse, the dispersed water vapor is extracted by the hose, the water vapor evaporated by the polyester slices is effectively reduced to be attached to the polyester slices above the polyester slices in a floating manner, and the drying rate of the polyester slices is improved.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a schematic structural view of a continuous dryer for polyester chips according to the present invention;
FIG. 3 is an enlarged view taken at A with respect to FIG. 2;
In the figure: the device comprises an evaporation cylinder 1, a feed inlet 11, a steam extraction module 2, a second air extraction pump 21, a second air extraction pipe 22, a steam extraction cover 23, a stirring module 3, a low-speed motor 31, a hollow shaft 32, an anti-backflow hole 321, a first through hole 3211, an anti-backflow shell 3212, a first inclined plate 3313, a shaft sleeve 33, a first air extraction pipe 34, a first air extraction pump 35, a stirring blade 36, a breathable shield 37, a hose 38, a hard pipe 39, a hard water leakage pipe 40, a hard water receiving pipe 41, a dispersion net 5, a material receiving funnel 6, a blast impeller 7 and a microwave generator 8.
Detailed Description
a method for producing a polyester sewing thread according to the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 and 2, the method for producing polyester sewing thread according to the present invention comprises the following steps:
the method comprises the following steps: taking raw material polyester slices, and putting the polyester slices into a polyester slice continuous dryer for rapid drying and dewatering, wherein the water content is controlled to be less than 30 PPM;
step two: after the polyester chips are dried in the first step, the polyester chips are put into a screw to be melted and spun at 290 ℃, 0.5 to 10 percent of color master batch is injected in the spinning process, and colored silk threads are spun through a spinneret plate;
Step three: after the colored silk threads are spun in the second step, spraying an oiling agent on the silk threads to reduce the friction and static electricity in the subsequent processing;
Step four: after the oil injection of the silk thread is finished in the third step, the silk thread enters a roller heated to 92 ℃ for stretching orientation, the strength of the silk thread is increased, and the silk thread is shaped by another group of hot rollers at 120 ℃ and then is wound into a spinning cake;
step five: after the silk thread is wound into a spinning cake in the fourth step, the silk thread of the spinning cake is subjected to straight twisting and sanding treatment to produce sewing thread;
the polyester chip continuous dryer in the first step comprises an evaporation cylinder 1, a steam extraction module 2, a stirring module 3, a dispersion net 5, a material receiving funnel 6 and a blast impeller 7, wherein the temperature in the evaporation cylinder 1 is higher than 80 ℃, and a feeding hole 11 is formed in the upper end of the evaporation cylinder 1; the steam extraction module 2 is positioned at the upper part of the evaporation cylinder 1, and the steam extraction module 2 is used for extracting steam evaporated on the polyester chips in the evaporation cylinder 1; the stirring module 3 is fixed on the evaporation cylinder 1, the stirring module 3 is close to the steam extraction module 2, and the stirring module 3 is used for stirring the polyester chips put into the evaporation cylinder 1 and extracting water vapor evaporated on the polyester chips; the dispersing net 5 is positioned below the feed port 11, the meshes of the dispersing net 5 are larger than the polyester chips, so that the polyester chips can easily leak from the dispersing net 5, and the dispersing net 5 is used for dispersing the polyester chips released from the feed port 11, thereby being beneficial to the evaporation of water vapor on the polyester chips; the receiving hopper 6 is positioned below the stirring module 3, the receiving hopper 6 is provided with a first steam through hole, the diameter of the first steam through hole is smaller than the minimum section length of the polyester chips, the receiving hopper 6 is used for receiving the dried polyester chips, the polyester chips entering from the feed port 11 can directly fall on the receiving hopper 6 after passing through the dispersing net 5 and the stirring module 3, and the dried polyester chips are sent out through the receiving hopper 6, so that the polyester chips are dried and kept continuous; the air blowing impeller 7 is positioned below the receiving hopper 6, the air blowing impeller 7 is used for blowing hot air into the evaporation cylinder 1 from bottom to top, the hot air penetrates through the receiving hopper 6 through the first steam through hole, and the hot air enables water vapor on the polyester chips to evaporate and rise faster; wherein the content of the first and second substances,
the stirring module 3 comprises a low-speed motor 31, a speed reducer, a hollow shaft 32, a shaft sleeve 33, a first steam extraction pipe 34 and a first air extraction pump 35, wherein the low-speed motor 31 is fixed at the upper end of the evaporation cylinder 1, a rotating shaft of the low-speed motor 31 is connected with the hollow shaft 32 through the speed reducer, and the low-speed motor 31 is used for driving the hollow shaft 32 to rotate; the lower part of the hollow shaft 32 is provided with stirring blades 36, the middle part of the hollow shaft 32 is provided with an anti-backflow hole 321, and the upper part of the hollow shaft 32 is provided with a steam extraction hole; the shaft sleeve 33 is sleeved on the upper part of the hollow shaft 32, the lower part of the shaft sleeve 33 is fixed with the evaporation cylinder 1, the shaft sleeve 33 is communicated with the hollow shaft 32 through a steam extraction hole, and steam in the hollow shaft 32 enters the shaft sleeve 33 through the steam extraction hole; the first air pump 35 is fixed on the outer wall of the evaporation cylinder 1, and the first air pump 35 pumps water vapor in the shaft sleeve 33 through the first air pumping pipe 34; the backflow-preventing holes 321 are provided in a plurality, the backflow-preventing holes 321 are uniformly distributed between the lower end of the shaft sleeve 33 and the stirring blade 36, and the water vapor in the evaporation cylinder 1 partially enters the hollow shaft 32 through the backflow-preventing holes 321. When the device works, the polyester chips are fed from the feed inlet 11, the polyester chips fall onto the dispersing net 5, the polyester chips stacked on the dispersing net 5 are automatically spread, and the polyester chips are spread and leak through meshes of the dispersing net 5; during the falling process of the polyester chips, water vapor on the polyester chips is continuously evaporated, and the low-speed motor 31 drives the hollow shaft 32 to rotate, so that the stirring blades 36 stir the polyester chips, and the evaporation of the water vapor on the polyester chips is accelerated; meanwhile, the first air extraction pump 35 generates negative pressure in the hollow shaft 32 through the first air extraction pipe 34 and the shaft sleeve 33; the hollow shaft 32 extracts water vapor near the hollow shaft 32 through the backflow-preventing hole 321, so that most of the water vapor evaporated from the polyester chips on the lower part directly enters the hollow shaft 32, but does not upwards evaporate and pass through the polyester chips on the upper part, and the moisture of the evaporated polyester chips is reduced; the backflow prevention hole 321 is used to prevent water vapor at the lower end of the hollow shaft 32 from rising and accumulating in the hollow shaft 32 and then overflowing from other same holes again.
As shown in fig. 2, the backflow prevention hole 321 includes a first through hole 3211, a backflow prevention housing 3212, and a first inclined plate 3313, wherein the first through hole 3211 penetrates through the shaft wall of the hollow shaft 32; the anti-backflow shell 3212 is fixed to the curved inner wall of the hollow shaft 32, the anti-backflow shell 3212 is located at an end of the through hole 3211, and the anti-backflow shell 3212 has a large lower end and a small upper end, so that water vapor at the lower end of the hollow shaft 32 cannot enter the anti-backflow shell 3212 to overflow during the rising process; the first inclined plate 3313 is disposed at an upper portion of the reverse flow preventing case 3212, and the first inclined plate 3313 prevents water droplets attached to an inner wall of the hollow shaft 32 from entering the reverse flow preventing case 3212. When the anti-backflow shell 3212 works, water vapor gradually accumulates in the hollow shaft 32, part of the water vapor is attached to the inner wall of the hollow shaft 32 and condenses into water drops, the water drops flow downwards along the inner wall of the hollow shaft 32, and when the water drops flow channel is at the inclined plate I3313, the water drops flow downwards along the inclined plate I3313, so that the water drops are prevented from entering the anti-backflow shell 3212; meanwhile, the backflow-preventing holes 321 prevent water vapor at the lower end of the hollow shaft 32 from overflowing again from other same holes after rising and gathering in the hollow shaft 32 and attaching to the polyester chips on the upper side, and increase the drying difficulty of the polyester chips.
As shown in fig. 2, the steam extraction module 2 includes a second extraction pump 21, a second extraction pipe 22 and a steam extraction cover 23, and the steam extraction cover 23 is fixed on the inner wall of the evaporation cylinder 1; one end of the second steam extraction pipe 22 is communicated with the second air extraction pump 21, and the other end of the second steam extraction pipe 22 is communicated with the steam extraction cover 23; the second air pump 21 is fixed at the upper end of the evaporation cylinder 1, and the second air pump 21 pumps the water vapor in the evaporation cylinder 1 through the second air pumping pipe 22 and the air pumping cover 23. During operation, the second air extracting pump 21 is started, the second air extracting pump 21 extracts the water vapor floating upwards in the evaporation cylinder 1 through the second air extracting pipe 22 and the air extracting cover 23, the water vapor is extracted from the top end of the evaporation cylinder 1 through the second air extracting pump 21, the separation speed of the water vapor and the polyester chips can be increased, and the drying speed of the polyester chips is increased.
As shown in fig. 2 and 3, a plurality of hoses 38 and hard pipes 39 are arranged at the bottom end edge of the hollow shaft 32, the hard pipes 39 are positioned in the hollow shaft 32, the hard pipes are not in contact with the inner wall of the hollow shaft 32, and the length of the hard pipes 39 is not shorter than two decimeters; the hose 38 is located in the hollow shaft 32, the hose 38 is communicated with the hollow shaft 32 through a hard pipe 39, a plurality of air inlet holes are arranged on the hose 38, the air inlet holes and the anti-backflow holes 321 are identical in structure, and the hose 38 rotates along with the hollow shaft 32. During operation, hollow shaft 32 rotates, hollow shaft 32 drives hose 38 and rotates, and hose 38 stirs on dacron polyester chip, makes the steam on the dacron polyester chip change the come-up and scatter, and simultaneously, there is the negative pressure in hollow shaft 32 for negative pressure has been produced in the hose 38, and hose 38 goes up the steam extraction through the inlet port with dacron polyester chip around the hose 38, makes steam can not float again on the dacron polyester chip and adhere to other dacron polyester chips, has improved the dry speed of dacron polyester chip.
as shown in fig. 2 and 3, a hard water leaking pipe 40 is arranged in the center of the bottom end of the hollow shaft 32, a hard water receiving pipe 41 is arranged below the hollow shaft 32, the upper end of the hard water receiving pipe 41 is coaxial with the hard water leaking pipe 40, the inner diameter of the hard water receiving pipe 41 is larger than the outer diameter of the hard water leaking pipe 40, the end of the hard water receiving pipe 41 is sleeved on the outer wall of the hard water leaking pipe 40, the hard water receiving pipe 41 is fixed on the inner wall of the evaporation cylinder 1 through a fixing frame, the other end of the hard water receiving pipe 41 extends out of the evaporation cylinder 1, and a water valve is arranged at the end of the hard water. During operation, water vapor is gradually accumulated and ascended in the hollow shaft 32, part of the water vapor is attached to the inner wall of the hollow shaft 32 and is condensed into water drops, and the water drops flow downwards along the inner wall of the hollow shaft 32, so that some water is accumulated at the bottom of the hollow shaft 32; therefore, the bottom of the hollow shaft 32 is provided with the hard water leaking pipe 40, the lower end of the hollow shaft 32 is provided with the hard water receiving pipe 41, when water drops in the hollow shaft 32 fall to the bottom, the water drops flow downwards into the hard water receiving pipe 41 along the hard water leaking pipe 40, and the hard water leaking pipe 40 and the hard water receiving pipe 41 are in non-contact, so that the water drops in the hollow shaft 32 flow towards the hard water receiving pipe 41 under the condition that the hollow shaft 32 keeps rotating, and the loss of negative pressure in the hollow shaft 32 can be reduced by closing the water valve.
as shown in fig. 2, a gas-permeable shield 37 is provided between the hollow shaft 32 and the stirring blades 36; the air-permeable shield 37 is sleeved on the outer wall of the hollow shaft 32; the stirring blade 36 is fixed to a gas permeable shroud 37. During operation, ventilative guard shield 37 can be separated the dacron polyester chip of hollow shaft 32 stirring with the hollow shaft 32 outer wall, avoided dacron polyester chip and the contact of hollow shaft 32 outer wall and made the ability of hollow shaft 32 extraction steam weaken, thereby the ability of hollow shaft 32 extraction steam has been improved, and simultaneously, ventilative guard shield 37 has, can make more steam gather in the hollow shaft 32 outside, made things convenient for the extraction of hollow shaft 32 to steam, thereby make the dacron polyester chip become dry rapidly, the sliced drying rate of dacron polyester has been improved.
As shown in fig. 2, a plurality of microwave generators 8 are disposed on the inner wall of the evaporation cylinder 1. During operation, the microwave generator 8 works to enable the air in the evaporation cylinder 1 to vibrate, so that the polyester chips are indirectly vibrated, water vapor on the polyester chips can be separated quickly, the drying speed of the polyester chips is increased, and the efficiency of the polyester chip continuous dryer for drying the polyester chips is increased.
the specific use flow is as follows:
When the device is used, the polyester chips are fed from the feed inlet 11, fall onto the dispersing net 5, and are automatically spread out by spreading the polyester chips stacked on the dispersing net 5, and the polyester chips are spread out through the meshes of the dispersing net 5; during the falling process of the polyester chips, water vapor on the polyester chips is continuously evaporated, the low-speed motor 31 drives the hollow shaft 32 to rotate, so that the stirring blades 36 stir the polyester chips to accelerate the evaporation of the water vapor on the polyester chips, the hollow shaft 32 drives the hose 38 to rotate while the hollow shaft 32 rotates, the hose 38 is stirred on the polyester chips to enable the water vapor on the polyester chips to be more easily floated and dispersed, and meanwhile, the first air suction pump 35 enables negative pressure to be generated in the hollow shaft 32 through the first air suction pipe 34 and the shaft sleeve 33; the hollow shaft 32 extracts water vapor near the hollow shaft 32 through the backflow prevention hole 321, most of the water vapor evaporated from the polyester chips on the lower portion directly enters the hollow shaft 32, but does not upwards evaporate and pass through the polyester chips on the upper portion, so that the evaporated polyester chips are reduced to be wetted by the water vapor again, negative pressure is generated in the hollow shaft 32, negative pressure is generated in the hose 38, the hose 38 extracts the water vapor on the polyester chips around the hose 38 through the air inlet hole, the water vapor on the polyester chips can not float upwards and attach to other polyester chips, and the drying speed of the polyester chips is improved;
The breathable shield 37 on the hollow shaft 32 can separate the polyester chips stirred by the hollow shaft 32 from the outer wall of the hollow shaft 32, so that the condition that the capacity of the hollow shaft 32 for extracting water vapor is weakened due to the fact that the polyester chips are in contact with the outer wall of the hollow shaft 32 is avoided, the capacity of the hollow shaft 32 for extracting water vapor is improved, meanwhile, the breathable shield 37 is arranged, more water vapor can be accumulated outside the hollow shaft 32, the water vapor can be conveniently extracted by the hollow shaft 32, the polyester chips are dried rapidly, and the drying rate of the polyester chips is improved; after water vapor enters the hollow shaft 32, the water vapor is gradually accumulated and ascended in the hollow shaft 32, part of the water vapor is attached to the inner wall of the hollow shaft 32 and condensed into water drops, the water drops flow downwards along the inner wall of the hollow shaft 32, and when the water drops flow channel is arranged at the inclined plate I3313, the water drops flow downwards along the inclined plate I3313, so that the water drops are prevented from entering the anti-backflow shell 3212; the backflow-preventing holes 321 prevent water vapor at the lower end of the hollow shaft 32 from overflowing from other same holes again and attaching to the polyester chips on the upper side after rising and gathering in the hollow shaft 32, so that the drying difficulty of the polyester chips is increased; the water droplets flow down the inner wall of the hollow shaft 32, causing some water to accumulate at the bottom of the hollow shaft 32; therefore, the bottom of the hollow shaft 32 is provided with the hard water leaking pipe 40, the lower end of the hollow shaft 32 is provided with the hard water receiving pipe 41, when water drops in the hollow shaft 32 fall to the bottom, the water drops flow downwards into the hard water receiving pipe 41 along the hard water leaking pipe 40, and the hard water leaking pipe 40 and the hard water receiving pipe 41 are in non-contact, so that the water drops in the hollow shaft 32 flow towards the hard water receiving pipe 41 under the condition that the hollow shaft 32 keeps rotating, and the loss of negative pressure in the hollow shaft 32 can be reduced by closing the water valve;
In the process of steaming the water in the evaporation cylinder 1, the steam which floats upwards in the evaporation cylinder 1 is extracted by the second air extracting pump 21 through the second air extracting pipe 22 and the second air extracting cover 23, and is extracted from the top end of the evaporation cylinder 1 through the second air extracting pump 21, so that the separation speed of the steam and the polyester chips can be increased, and the drying speed of the polyester chips is increased; when the polyester chips pass through the microwave generator 8, the microwave generator 8 works to enable the air in the evaporation cylinder 1 to vibrate, so that the polyester chips are indirectly vibrated, water vapor on the polyester chips can be quickly separated, the drying speed of the polyester chips is increased, and the efficiency of the continuous polyester chip drying machine for the polyester chips is increased; in the whole process, the air blowing impeller 7 continuously rotates, hot air is blown into the evaporation cylinder 1 from bottom to top by the air blowing impeller 7, the hot air passes through the material receiving hopper 6 through the first steam through hole, and water vapor on the polyester chips is evaporated and ascended more quickly by the hot air; finally, the polyester chips fall into the receiving hopper 6, the receiving hopper 6 directly receives the dried polyester chips, and the dried polyester chips are sent out through the receiving hopper 6, so that the polyester chips are dried and the continuity is kept.
While one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
industrial applicability
according to the invention, the polyester chips are continuously dried by the polyester chip continuous dryer, so that the production efficiency of sewing threads is improved; by adding the color master batch in the production spinning, the produced sewing thread is colored, and the production efficiency of the sewing thread is improved; meanwhile, after the colored silk threads are spun, oil solution is sprayed on the silk threads, so that the abrasion and static electricity generation of the silk threads in subsequent processing are reduced, and the output quality of the sewing threads is improved; the sewing thread production method is therefore useful in the textile technology field.
Claims (6)
1. a production method of polyester sewing thread is characterized in that: the method comprises the following steps:
The method comprises the following steps: taking raw material polyester slices, and putting the polyester slices into a polyester slice continuous dryer for rapid drying and dewatering, wherein the water content is controlled to be less than 30 PPM;
Step two: after the polyester chips are dried in the first step, the polyester chips are put into a screw to be melted and spun at 290 ℃, and (0.5% -10%) color master batch is injected in the spinning process, and colored silk threads are spun through a spinneret plate;
Step three: after the colored silk threads are spun in the second step, spraying an oiling agent on the silk threads to reduce the friction and static electricity in the subsequent processing;
Step four: after the oil injection of the silk thread is finished in the third step, the silk thread enters a roller heated to 92 ℃ for stretching orientation, the strength of the silk thread is increased, and the silk thread is shaped by another group of hot rollers at 120 ℃ and then is wound into a spinning cake;
Step five: after the silk thread is wound into a spinning cake in the fourth step, the silk thread of the spinning cake is subjected to straight twisting and sanding treatment to produce sewing thread;
The polyester chip continuous dryer in the first step comprises an evaporation cylinder (1), a steam extraction module (2), a stirring module (3), a dispersion net (5), a receiving funnel (6) and a blowing impeller (7), wherein the temperature in the evaporation cylinder (1) is higher than 80 ℃, and a feeding hole (11) is formed in the upper end of the evaporation cylinder (1); the steam extraction module (2) is positioned at the upper part of the evaporation cylinder (1), and the steam extraction module (2) is used for extracting steam evaporated on the polyester chips in the evaporation cylinder (1); the stirring module (3) is fixed on the evaporation cylinder (1), the stirring module (3) is close to the steam extraction module (2), and the stirring module (3) is used for stirring the polyester chips put into the evaporation cylinder (1) and extracting steam evaporated on the polyester chips; the dispersing net (5) is positioned below the feed port (11), meshes of the dispersing net (5) are larger than the polyester chips, and the dispersing net (5) is used for dispersing the polyester chips released from the feed port (11); the receiving hopper (6) is positioned below the stirring module (3), the first steam through holes are distributed on the receiving hopper (6), the diameter of the first steam through holes is smaller than the minimum section length of the polyester chips, and the receiving hopper (6) is used for receiving the dried polyester chips; the air blowing impeller (7) is positioned below the material receiving funnel (6), and the air blowing impeller (7) is used for blowing hot air into the evaporation cylinder (1) from bottom to top so that water vapor on the polyester chips is evaporated and ascended more quickly; wherein the content of the first and second substances,
The stirring module (3) comprises a low-speed motor (31), a speed reducer, a hollow shaft (32), a shaft sleeve (33), a first steam extraction pipe (34) and a first air extraction pump (35), wherein the low-speed motor (31) is fixed at the upper end of the evaporation cylinder (1), a rotating shaft of the low-speed motor (31) is connected with the hollow shaft (32) through the speed reducer, and the low-speed motor (31) is used for driving the hollow shaft (32) to rotate; stirring blades (36) are arranged at the lower part of the hollow shaft (32), an anti-backflow hole (321) is arranged at the middle part of the hollow shaft (32), and a steam extraction hole is arranged at the upper part of the hollow shaft (32); the shaft sleeve (33) is sleeved on the upper part of the hollow shaft (32), the lower part of the shaft sleeve (33) is fixed with the evaporation cylinder (1), the shaft sleeve (33) is communicated with the hollow shaft (32) through a steam extraction hole, and water vapor in the hollow shaft (32) enters the shaft sleeve (33) through the steam extraction hole; the first air suction pump (35) is fixed on the outer wall of the evaporation cylinder (1), and the first air suction pump (35) sucks water vapor in the shaft sleeve (33) through the first air suction pipe (34); the backflow preventing holes (321) are arranged in plurality, the backflow preventing holes (321) are uniformly distributed between the lower end of the shaft sleeve (33) and the stirring blade (36), and the water vapor in the evaporation cylinder (1) enters the hollow shaft (32) through the backflow preventing holes (321);
the backflow prevention hole (321) comprises a first through hole (3211), a backflow prevention shell (3212) and a first inclined plate (3313), and the first through hole (3211) penetrates through the shaft wall of the hollow shaft (32); the anti-reflux shell (3212) is fixed to the curved inner wall of the hollow shaft (32), the anti-reflux shell (3212) is located at the end of the through hole I (3211), and the anti-reflux shell (3212) is large in lower end and small in upper end; the first inclined plate (3313) is arranged at the upper part of the backflow preventing shell (3212), and the first inclined plate (3313) is used for preventing water drops attached to the inner wall of the hollow shaft (32) from entering the backflow preventing shell (3212).
2. the method for producing polyester sewing thread according to claim 1, wherein: the steam extraction module (2) comprises a second air extraction pump (21), a second steam extraction pipe (22) and a steam extraction cover (23), and the steam extraction cover (23) is fixed on the inner wall of the evaporation cylinder (1); one end of the second steam extraction pipe (22) is communicated with the second air extraction pump (21), and the other end of the second steam extraction pipe (22) is communicated with the steam extraction cover (23); the second air pump (21) is fixed at the upper end of the evaporation cylinder (1), and the second air pump (21) pumps water vapor in the evaporation cylinder (1) through the second air pumping pipe (22) and the air pumping cover (23).
3. the method for producing polyester sewing thread according to claim 1, wherein: the bottom end edge of the hollow shaft (32) is provided with a plurality of hoses (38) and hard pipes (39), the hard pipes (39) are positioned in the hollow shaft (32), the hard pipes are not in contact with the inner wall of the hollow shaft (32), and the length of the hard pipes (39) is not shorter than two decimeters; the hose (38) is located in the hollow shaft (32), the hose (38) is communicated with the hollow shaft (32) through the hard tube (39), the hose (38) is provided with a plurality of air inlets, the structures of the air inlets and the anti-backflow hole (321) are the same, and the hose (38) rotates along with the hollow shaft (32).
4. The production method of the polyester sewing thread according to claim 3, wherein: the bottom central authorities of hollow shaft (32) have arranged stereoplasm hourglass water pipe (40), stereoplasm water receiving pipe (41) have been arranged to the below of hollow shaft (32), and the upper end and the stereoplasm hourglass water pipe (40) coaxial line of stereoplasm water receiving pipe (41), the internal diameter of stereoplasm water receiving pipe (41) is greater than the external diameter of stereoplasm hourglass water pipe (40), the tip cover of stereoplasm water receiving pipe (41) is on the outer wall of stereoplasm hourglass water pipe (40), stereoplasm water receiving pipe (41) are fixed in on the inner wall of evaporating drum (1) through the mount that sets up, the other end of stereoplasm water receiving pipe (41) extends to outside evaporating drum (1), and the tip of stereoplasm water receiving pipe (41) is provided with the water valve.
5. The production method of the polyester sewing thread as claimed in claim 4, wherein: a ventilating shield (37) is arranged between the hollow shaft (32) and the stirring blades (36); the air-permeable shield (37) is sleeved on the outer wall of the hollow shaft (32); the stirring blade (36) is fixed on the air-permeable shield (37).
6. the method for producing polyester sewing thread according to claim 1, wherein: the inner wall of the evaporation cylinder (1) is provided with a plurality of microwave generators (8).
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| CN116288755A (en) * | 2023-03-28 | 2023-06-23 | 宁波三邦超细纤维有限公司 | Manufacturing process of high-strength polyester sewing thread of color spinning filament |
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| CN1073257A (en) * | 1992-10-09 | 1993-06-16 | 姜国全 | Vertical electric vacunm drying technology and equipment |
| CN202350458U (en) * | 2011-11-28 | 2012-07-25 | 湖南岳化化工股份有限公司 | Nylon 6 section drying tower |
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