CN113969450A

CN113969450A - Preparation method and equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn)

Info

Publication number: CN113969450A
Application number: CN202111182744.6A
Authority: CN
Inventors: 俞洋; 朱闻宇; 陈殿根; 王金海
Original assignee: Jiangsu Jiatong Energy Co ltd
Current assignee: Jiangsu Jiatong Energy Co ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-01-25

Abstract

The invention provides a preparation method and equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn), and relates to the technical field of spinning. The preparation equipment of the antibacterial special-shaped superfine polyester POY comprises a spinning cabinet; the fiber prepared by the method has the characteristics of moisture absorption, perspiration, bacteriostasis and the like, the anti-light oxidant is used in the treatment process to ensure that the antibacterial fiber cannot change color, the titer of the monofilament spun by the method is less than or equal to 0.5dtex, cooling air generated by an air compressor is subjected to constant-pressure treatment by an air storage tank and is distributed again by a first air distributor and an air-homogenizing net, so that the blowing directions are very uniform, and the occurrence of tow broken ends is greatly reduced.

Description

Preparation method and equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn)

Technical Field

The invention relates to the technical field of spinning, in particular to a preparation method and equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn).

Background

The synthetic fiber fabrics such as the acetate fiber and the nylon fiber are easy to breed various microorganisms under the condition of relative temperature and humidity, so that the fabrics are easy to discolor, and the problems of mold generation, odor and the like are caused.

Currently, the physical modification methods for preparing bacteriostatic fibers and fabrics mainly include the following two methods:

the first method is a coating method: dipping and pressing the fiber or the fabric in a bacteriostatic agent solution or other volatile carrier in a post-treatment process, and when the fiber or the fabric is evaporated by a high-temperature drying method or other injection sintering methods, an insoluble or slightly soluble bacteriostatic agent layer can be precipitated on the fabric so as to obtain corresponding bacteriostatic performance, or coating the surface of the fiber or the fabric by using a bacteriostatic agent containing Ag ions or other silver-series bacteriostatic agents to form a metal coating. However, this surface treatment method is liable to lose the bacteriostatic effect by washing. And further reduces the comfort and breathability of the subsequent garment as the coating thickens.

The second method is a copolymerization method: the bacteriostatic agent is added in the fiber polymerization stage or the textile melt conveying process to directly spin or prepare functional spinning slices, and the bacteriostatic agent is uniformly dispersed in the fiber and can slowly permeate to the outer side of the fabric, so that the process is simpler, the comfort level of the fabric is not affected, and compared with a coating method technology, the bacteriostatic effect is good, and the stability is high. However, the method is still very difficult to technically manufacture high-quality special-shaped superfine polyester fibers, has high requirements on process technology, Ag ions or Ag elements dispersed in the fibers are slowly decomposed and lost along with the increase of service life, and the color of fabrics is changed by Ag ions and Ag simple substances due to the photo-oxidation effect.

The traditional polyester fiber has the defects that the macromolecule chain is lack of polar groups, the macromolecule chain is tightly arranged, the cross section is circular, the moisture absorption speed is generally 0.4%, the wearing comfort is poor directly due to poor moisture absorption and sweat discharging performance of the fiber, the silver bacteriostatic agent is easy to gather in the fiber melt spinning process, and particularly in the preparation of the special-shaped superfine polyester fiber, the fiber forming is influenced, for example, the silver-zinc composite bacteriostatic agent of 20-60nm zeolite, zirconium hydrogen phosphate or silicon oxygen compound is widely used for preparing powder at present, but the spinnability of the fiber is easy to be directly influenced due to uncontrollable dispersibility of the bacteriostatic powder.

In addition, because the wind speed, the wind quantity, the wind temperature uniformity, the consistency and the stability of the wind cooling device can generate corresponding influences on the quality, the fineness, the drafting performance, the elongation and the like of the spinning fibers, the more uniform, the more consistent and the stable the wind of the wind cooling device is, the better the cooling effect on melt filaments is, the more uniform the wound tows can be obtained, the better the quality of the protofilaments is, the more favorable the production of post-spinning drafting is, and finally, the higher the quality of products can be obtained

However, the circumferential wind speed of the existing circular blowing cooling device of the spinning equipment is still uneven, because the wind speed of the air introduced into the wind channel from the air inlet pipe is inconsistent with the wind speed far away from the air inlet pipe, the inconsistent wind speed can not be changed through the annular pre-rectifying plate, so the overall consistent cooling effect of the filament yarns is influenced, because the wind speed is high, the wind quantity is large, the wind temperature is low, the cooling speed of the melt filament yarns is relatively high, and the probability that the melt filament yarns in the region with low wind speed, small wind quantity and relatively high wind temperature are broken to form broken filament yarns is increased.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a preparation method and equipment of antibacterial special-shaped superfine polyester POY (polyester pre-oriented yarn), which solve the problems that silver antibacterial agents are easy to aggregate in the fiber melt spinning process in the traditional spinning, especially the preparation of special-shaped superfine polyester fibers influences the fiber forming, the fiber spinnability is easy to be directly influenced due to uncontrollable dispersibility of antibacterial powder, and the probability of forming broken filaments due to stretch breaking of melt filaments caused by uneven cooling in the spinning process is increased.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a preparation device of antibacterial special-shaped superfine polyester POY (pre-oriented yarn) comprises a spinning cabinet; the feeding cabinet is fixedly connected to the upper wall of the spinning cabinet, the lower wall of the inner side of the feeding cabinet is fixedly connected with an antibacterial master batch preparation assembly, a mixing feeding assembly and a metering pump from left to right in sequence, and a second static mixer is fixedly connected between the inlet end of the metering pump and the mixing feeding assembly; the cooling cabinet and the spinning box are arranged on the upper wall of the inner side of the spinning cabinet from left to right, the inlet end of the spinning box is fixedly connected with the outlet end of the metering pump through a pipeline, and the lower wall of the spinning box is provided with a cooling assembly for air cooling spinning; the cooling generating device is arranged in the cooling cabinet and used for generating a cooling effect on the cooling assembly; the spinning box comprises a filter screen and a spinneret plate which are arranged in the spinning box from top to bottom, wherein the inner wall of the spinneret plate is provided with a plurality of groups of spinneret holes; the oil feeding wheel, the pre-network device and the first GR guide wheel are vertically arranged on the back wall of the inner side of the spinning cabinet and positioned below the cooling assembly; the second GR guide wheel is rotatably connected to the rear wall of the inner side of the spinning cabinet and is positioned on the left side of the pre-network device; the main network device is fixedly connected to the back wall of the inner side of the spinning cabinet and is positioned on the left side of the second GR guide wheel, and the winding machine.

Preferably, antibacterial master batch preparation subassembly includes agitator, first static mixer and first screw extruder, the equal fixed connection of agitator and first screw extruder is at the inboard lower wall of feeding cabinet, first static mixer fixed connection is between first screw extruder entrance point and agitator exit end.

Preferably, the mixing and feeding assembly comprises a mixing barrel and a second screw extruder, the second screw extruder is fixedly connected to the inner lower wall of the feeding cabinet, the outlet end of the second screw extruder is fixedly connected with one end of the second static mixer far away from the metering pump, the mixing barrel is fixedly connected to the inlet end of the second screw extruder, two sets of inlet ends are arranged on the mixing barrel, and one set of inlet ends of the mixing barrel is fixedly connected with the outlet end of the first screw extruder through a pipeline.

Preferably, the cooling assembly comprises a cooling cavity outer shell, a cooling cavity inner shell and an air suction cover, the cooling cavity outer shell is fixedly connected to the lower wall of the spinning box, the cooling cavity inner shell is fixedly connected to the inner side wall of the cooling cavity outer shell, an air homogenizing net is fixedly connected between the cooling cavity inner shell and the cooling cavity outer shell, and multiple groups of air blowing holes are formed in the side wall of the cooling cavity inner shell and are arranged towards the downward inclination of the center of the cooling cavity inner shell.

Preferably, the air suction cover is fixedly connected to the lower wall of the cooling cavity shell, and the inner side wall of the air suction cover is fixedly connected with an air baffle.

Preferably, cooling generating device includes air compressor machine, gas holder, air exhauster and first gas distributor, second gas distributor, air compressor machine, gas holder and air exhauster from a left side to having fixed connection in proper order at the inboard lower wall of cooling cabinet, first gas distributor, second gas distributor distribute fixed connection about being at the inboard right wall of cooling cabinet, through pipeline fixed connection between air compressor machine, gas holder, the first gas distributor, through pipeline fixed connection between air exhauster and the second gas distributor, the one end that gas holder, air exhauster were kept away from to first gas distributor, second gas distributor all is provided with the multiunit export, the one end that gas holder, air exhauster were kept away from to first gas distributor, second gas distributor is respectively through multiunit pipeline and cooling chamber shell, suction hood fixed connection.

Preferably, a plurality of groups of spinneret orifices are arranged on the inner wall of the spinneret plate in a circumferential array and in an equally-divided manner, and the cross section of each group of spinneret orifices can be in any one of a trilobal shape, a quadralobal shape, a cross shape or a pentalobal shape.

A preparation method of bacteriostatic special-shaped superfine polyester POY yarns comprises the following steps:

s1, adding the raw materials of the antibacterial master batch into a stirring barrel, mixing and stirring uniformly, adding the dispersing agent and the polyester carrier base into the stirring barrel, blending for 40 minutes, and sending the mixture into a first screw extruder through a first static mixer for mixing and extruding to obtain the antibacterial master batch;

s2, feeding 20% of the antibacterial master batches and 80% of the polyester chips into a second screw extruder through a mixing barrel, blending and melting the mixture, extruding the mixture, fully mixing the melt through a second static mixer, accurately metering the mixture by a metering pump, feeding the mixture into a spinning box, and extruding a spinneret plate through spinneret holes to form melt trickle;

s3, cooling air generated by an air compressor is subjected to constant pressure through an air storage tank, is uniformly distributed through a first gas distributor, is input into an outer shell of a cooling cavity through a plurality of groups of pipelines, is subjected to constant pressure again through an air-homogenizing net and then is blown out through a blowing hole in the inner wall of the inner shell of the cooling cavity, a melt trickle is cooled and solidified through blowing to form nascent fibers, the cooling air flows downwards along the nascent fibers, passes through a wind shield, a plurality of groups of pipelines on the outer wall of the wind suction hood form negative pressure through an exhaust fan and a second gas distributor, and the wind subjected to heat exchange nearby the wind shield is pumped away;

and S4, cooling and solidifying the nascent fiber, oiling the nascent fiber by an oiling wheel, after oiling, enabling the filament bundle to pass through a pre-interlacer, a first GR guide wheel, a second GR guide wheel and a main interlacer, and finally winding the filament bundle into a POY (polyester pre-oriented yarn) cake by a winding machine.

Preferably, the antibacterial master batch comprises the following raw materials in parts by weight: 21% of silver-based inorganic bacteriostatic agent, 0.1% of photooxidation resistant agent, 1% of dispersing agent and 77.9% of polyester carrier.

Preferably, the screw temperature of the first screw extruder is 250-268 ℃ when the first screw extruder works.

Preferably, the silver-based inorganic bacteriostatic agent is functional powder which exchanges silver particles through inorganic salt ions, specifically, the silver-based inorganic bacteriostatic agent is carried in nano peroxide or zirconium hydrogen phosphate or nano diatomite, the average particle size of the silver-based inorganic bacteriostatic agent is 10nm, the dispersing agent is powder made of PE, the photooxidation resistant agent is a 2- (acetyl mercaptan) acetamide compound, and the chemical formula is C4H7NO 2S.

Preferably, the extrusion temperature of the second screw extruder is: the first zone is 238-245 ℃, the second zone is 250-258 ℃, the third zone is 265-270 ℃, the fourth zone is 273-280 ℃, the fifth zone is 272-275 ℃, the sixth zone is 265-270 ℃, and the screw pressure of the second screw extruder is 80-90 kg/Cm 2.

Preferably, the relative humidity of the cooling air is 85-95%, and the wind speed is 0.7-0.85 m/s.

Preferably, the oiling concentration of the upper oiling wheel is 18%, and the rotating speed of the upper oiling wheel is 4-6 rpm.

(III) advantageous effects

The invention provides a preparation method and equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn). The method has the following beneficial effects:

1. in addition, the nano inorganic salt used in the invention can sterilize viruses under visible light and ultraviolet light, can completely decompose and remove bacteria and virus residues through photocatalysis, and has very high water resistance and lasting sterilization effect.

2. The fiber prepared by the method has various functions such as antibiosis, superfine performance, abnormity and the like, sweat on a body can be discharged out of the body surface through capillary negative pressure by the capillary effect of the superfine fiber and the groove naturally generated by the abnormity fiber, and the fiber has the advantages of moisture absorption and sweat discharge, and has the characteristics of dryness, comfort, bacteriostasis and the like.

3. The nano antibacterial agent used for the product manufactured by the method has the characteristic of high heat resistance, and the silver simple substance is prevented from oxidative discoloration by using the photo-oxidant in the treatment process, so that the antibacterial fiber can be ensured not to discolor.

4. The filament number spun by the method is less than or equal to 0.5dtex, the elongation of a single fiber is 30 percent at 35 ℃, the breaking strength is 2.5-3.8 cN/dtex, the boiling water shrinkage is 8 percent, the killing rate of bacteria and viruses such as escherichia coli, staphylococcus aureus, hepatitis B virus, foot-and-mouth disease, anthracnose and the like is over 99.9 percent, and the fabric has no toxic or side effect, high sterilization rate, can be cleaned at room temperature, and can be used for terminal products such as socks, underwear, health care clothes, children clothes, bedding and the like.

5. The cooling air that the air compressor machine produced is handled through the constant voltage of gas holder, carries out evenly distributed and the redistributing of even wind net through first gas distributor again for each direction is very even when the cooling air blows to the fuse-element through the blowhole, and the wind speed is unanimous, and the cooling air after carrying out the heat exchange is taken away rapidly by the air exhauster, has increased the cooling effect, the emergence of the silk bundle broken end that significantly reduces.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the feeding cabinet of the present invention;

FIG. 3 is a schematic view of the internal structure of the cooling cabinet of the present invention;

FIG. 4 is a cross-sectional view showing the internal structure of the spinning beam of the present invention;

FIG. 5 is a top view of a spinneret plate structure according to the present invention;

FIG. 6 is an enlarged view of a portion of the invention at A in FIG. 5;

FIG. 7 is a sectional view showing the internal structure of the cooling chamber housing according to the present invention;

FIG. 8 is an enlarged view of a portion of the invention at B in FIG. 7;

FIG. 9 is a cross-sectional view of the internal structure of the suction hood of the present invention;

FIG. 10 is a top view of a first gas distributor structure according to the present invention.

Wherein, 1, a spinning cabinet; 2. a feeding cabinet; 3. a cooling cabinet; 4. a stirring barrel; 5. a first static mixer; 6. a first screw extruder; 7. a mixing barrel; 8. a second screw extruder; 9. a second static mixer; 10. a metering pump; 11. a spinning box; 12. an air compressor; 13. a gas storage tank; 14. an exhaust fan; 15. a first gas distributor; 16. a second gas distributor; 17. a cooling chamber housing; 18. a wind-homogenizing net; 19. a cooling chamber inner shell; 20. an air blowing hole; 21. an air suction hood; 22. loading onto a tanker; 23. a pre-network device; 24. a first GR guide wheel; 25. a second GR guide wheel; 26. a master network device; 27. a winding machine; 28. a filter screen; 29. a spinneret plate; 30. a spinneret orifice; 31. a wind deflector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1 to 10, an embodiment of the present invention provides a preparation apparatus of bacteriostatic special-shaped ultrafine polyester POY yarn, including a spinning cabinet 1; the feeding cabinet 2 is fixedly connected to the upper wall of the spinning cabinet 1, the lower wall of the inner side of the feeding cabinet 2 is fixedly connected with an antibacterial master batch preparation assembly, a mixed feeding assembly and a metering pump 10 from left to right in sequence, and a second static mixer 9 is fixedly connected between the inlet end of the metering pump 10 and the mixed feeding assembly; the cooling cabinet 3 and the spinning box 11 are arranged on the upper wall of the inner side of the spinning cabinet 1 from left to right, ventilation openings for ventilation are formed in the front wall and the rear wall of the cooling cabinet 3, the inlet end of the spinning box 11 is fixedly connected with the outlet end of the metering pump 10 through a pipeline, and a cooling assembly for air cooling of spinning is arranged on the lower wall of the spinning box 11; a cooling generation device arranged in the cooling cabinet 3 and used for generating a cooling effect on the cooling component; the spinning device comprises a filter screen 28 and a spinneret plate 29 which are arranged in a spinning box 11 from top to bottom, wherein a plurality of groups of spinneret holes 30 are arranged on the inner wall of the spinneret plate 29, the plurality of groups of spinneret holes 30 are arranged on the inner wall of the spinneret plate 29 in a circumferential array and are equally divided, and the cross section of each group of spinneret holes 30 can be in any one of a trilobal shape, a quadralobal shape, a cross shape or a pentaloba shape; the oil feeding wheel 22, the pre-network device 23 and the first GR guide wheel 24 are vertically arranged on the inner rear wall of the spinning cabinet 1 and are positioned below the cooling assembly; the second GR guide wheel 25 is rotatably connected to the rear wall of the inner side of the spinning cabinet 1 and is positioned on the left side of the pre-network device 23; a main network device 26 fixedly connected to the rear wall of the spinning cabinet 1 and positioned at the left side of the second GR guide wheel 25, and a winding machine 27.

The antibacterial master batch preparation subassembly includes agitator 4, first static mixer 5 and first screw extruder 6, and the equal fixed connection of agitator 4 and first screw extruder 6 is at 2 inboard lower walls of feeding cabinet, and 5 fixed connection of first static mixer are between 6 entrance points of first screw extruder and 4 exit ends of agitator, and agitator 4 is used for stirring the multiple raw materials of making the antibacterial master batch.

Mix the feeding subassembly and include mixing barrel 7,

second screw extruder

8, 8 fixed connection of second screw extruder are at 2 inboard lower walls of feeding cabinet, 8 exit ends of second screw extruder and the one end fixed connection that measuring pump 10 was kept away from to second static mixer 9, 7 fixed connection of mixing barrel are at 8 entrance points of second screw extruder, be provided with two sets of entrance points on mixing barrel 7, 7 one of them set of entrance points of mixing barrel pass through pipeline and 6 exit end fixed connection of first screw extruder, antibacterial master batch and polyester chip mix in mixing barrel 7, mix the melt by second screw extruder 8 again and extrude.

Cooling unit includes cooling chamber shell 17, cooling chamber inner shell 19 and the cover 21 that induced drafts, cooling chamber shell 17 fixed connection is at 11 lower walls of spinning box, 19 fixed connection in cooling chamber shell inside walls in cooling chamber, the even wind net of fixedly connected with 18 still between cooling chamber inner shell 19 and the cooling

chamber shell

17, 19 lateral walls in cooling chamber inner shell are provided with multiunit blowhole 20, multiunit blowhole 20 all is towards the setting of 19 central one end downward sloping in cooling chamber inner shell, 21 fixed connection in cooling chamber shell 17 lower walls in the cover 21 that induced drafts, 21 inside wall fixedly connected with deep bead 31 in the cover that induced drafts, the cooling air gets into cooling chamber shell 17 from the pipeline, through even wind net 18 even wind once more, the blowhole 20 of 19 inner walls in rethread cooling chamber blows to the fuse-melt, wind pressure, the wind speed is very even.

The cooling generation device comprises an air compressor 12, an air storage tank 13, an exhaust fan 14, a first gas distributor 15 and a second gas distributor 16, wherein the air compressor 12, the air storage tank 13 and the exhaust fan 14 are sequentially and fixedly connected with the lower wall of the inner side of the cooling cabinet 3 from left to right, the first gas distributor 15 and the second gas distributor 16 are fixedly connected with the right wall of the inner side of the cooling cabinet 3 in an up-and-down distribution manner, the air compressor 12, the air storage tank 13 and the first gas distributor 15 are fixedly connected through a pipeline, the exhaust fan 14 is fixedly connected with the second gas distributor 16 through a pipeline, a plurality of groups of outlets are arranged at one ends of the first gas distributor 15, the second gas distributor 16, which are far away from the air storage tank 13 and the exhaust fan 14, one ends of the first gas distributor 15 and the second gas distributor 16, which are far away from the gas storage tank 13 and the exhaust fan 14, are fixedly connected with the cooling cavity shell 17 and the air suction hood 21 through a plurality of groups of pipelines respectively.

A preparation method of bacteriostatic special-shaped superfine polyester POY (pre-oriented yarn) comprises the following steps:

s1, adding the raw materials of the antibacterial master batch into a stirring barrel 4, uniformly mixing and stirring, adding the dispersing agent and the polyester carrier base into the stirring barrel 4, blending for 40 minutes, sending the mixture into a first screw extruder 6 through a first static mixer 5, mixing and extruding to obtain the antibacterial master batch, wherein the screw temperature of the first screw extruder 6 is 250-268 ℃ when the first screw extruder 6 works;

s2, feeding 20% of antibacterial master batch and 80% of polyester chips into a second screw extruder 8 through a mixing barrel 7, blending and melting, and then extruding, wherein the extrusion temperature of the second screw extruder 8 is as follows: the first zone is 238-245 ℃, the second zone is 250-258 ℃, the third zone is 265-270 ℃, the fourth zone is 273-280 ℃, the fifth zone is 272-275 ℃, the sixth zone is 265-270 ℃, the screw pressure of the second screw extruder 8 is 80-90 kg/Cm2, the melt is fully mixed by the second static mixer 9 and then accurately metered by the metering pump 10 and sent to the spinning box 11, and the spinneret plate 29 is extruded through the spinneret hole 30 to form melt trickle;

s3, cooling air generated by the air compressor 12 passes through the air storage tank 13 to be constant in pressure, then is uniformly distributed through the first air distributor 15, is input into the cooling cavity outer shell 17 through a plurality of groups of pipelines, is constant in pressure again through the air-homogenizing net 18, and is blown out through the air blowing holes 20 in the inner wall of the cooling cavity inner shell 19, the relative humidity of the cooling air is 85-95%, the air speed is 0.7-0.85 m/S, the melt trickle is cooled and solidified through the air blowing to become nascent fibers, the cooling air flows downwards along the nascent fibers and passes through the wind shield 31, a plurality of groups of pipelines on the outer wall of the air suction cover 21 form negative pressure through the exhaust fan 14 and the second air distributor 16, and the air which passes through heat exchange nearby the wind shield 31 is exhausted;

s4, cooling and solidifying the nascent fiber, oiling the nascent fiber by the oiling wheel 22, wherein the oiling concentration of the oiling wheel 22 is 18%, the rotating speed of the oiling wheel 22 is 4-6 rpm, after oiling is completed, the filament bundle passes through the pre-interlacer 23, the first GR guide wheel 24, the second GR guide wheel 25 and the main interlacer 26, and finally the filament bundle is wound into a POY (polyester pre-oriented yarn) cake by the winding machine 27.

The antibacterial master batch comprises the following raw materials in percentage by weight: 21% of silver-based inorganic bacteriostatic agent, 0.1% of photooxidation resistant agent, 1% of dispersing agent and 77.9% of polyester carrier.

The silver-based inorganic bacteriostatic agent is functional powder which exchanges silver particles through inorganic salt ions, and specifically the silver-based inorganic bacteriostatic agent is carried in nano peroxide, zirconium hydrogen phosphate or nano diatomite, the average particle size of the silver-based inorganic bacteriostatic agent is 10nm, the dispersing agent is powder prepared from PE, the light-resistant oxidant is a 2-acetyl mercaptan acetamide compound, and the chemical formula is C4H7NO 2S.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A preparation equipment of antibacterial special-shaped superfine polyester POY (pre-oriented yarn) is characterized in that: comprises a spinning cabinet (1);

the feeding cabinet (2) is fixedly connected to the upper wall of the spinning cabinet (1), the lower wall of the inner side of the feeding cabinet (2) is fixedly connected with an antibacterial master batch preparation assembly, a mixed feeding assembly and a metering pump (10) from left to right in sequence, and a second static mixer (9) is fixedly connected between the inlet end of the metering pump (10) and the mixed feeding assembly;

the cooling cabinet (3) and the spinning box (11) are arranged on the upper wall of the inner side of the spinning cabinet (1) from left to right, the inlet end of the spinning box (11) is fixedly connected with the outlet end of the metering pump (10) through a pipeline, and the lower wall of the spinning box (11) is provided with a cooling assembly for air cooling of spinning;

the cooling generating device is arranged in the cooling cabinet (3) and used for generating a cooling effect on the cooling assembly;

the spinning device comprises a filter screen (28) and a spinneret plate (29) which are arranged in the spinning box (11) from top to bottom, wherein a plurality of groups of spinneret holes (30) are formed in the inner wall of the spinneret plate (29);

the upper oil feeding wheel (22), the pre-network device (23) and the first GR guide wheel (24) are vertically arranged on the inner rear wall of the spinning cabinet (1) and are positioned below the cooling assembly;

a second GR guide wheel (25) which is rotatably connected with the rear wall of the inner side of the spinning cabinet (1) and is positioned on the left side of the pre-network device (23);

a main network device (26) and a winding machine (27) which are fixedly connected with the back wall of the inner side of the spinning cabinet (1) and are positioned on the left side of the second GR guide wheel (25).

2. The apparatus of claim 1, wherein the apparatus comprises: bacteriostatic master batch preparation subassembly includes agitator (4), first static mixer (5) and first screw extruder (6), equal fixed connection of agitator (4) and first screw extruder (6) is at the inboard lower wall of feeding cabinet (2), first static mixer (5) fixed connection is between first screw extruder (6) entrance point and agitator (4) exit end.

3. The apparatus of claim 2, wherein the apparatus comprises: mix feeding subassembly includes mixing barrel (7), second screw extruder (8) fixed connection is at feeding cabinet (2) inboard lower wall, the one end fixed connection of measuring pump (10) is kept away from with second static mixer (9) to second screw extruder (8) exit end, mixing barrel (7) fixed connection is at second screw extruder (8) entrance point, be provided with two sets of entrance points on mixing barrel (7), one of them set of entrance point of mixing barrel (7) passes through pipeline and first screw extruder (6) exit end fixed connection.

4. The apparatus of claim 3, wherein the apparatus comprises: cooling unit includes cooling chamber shell (17), cooling chamber inner shell (19) and cover (21) induced drafts, cooling chamber shell (17) fixed connection is in spinning case (11) lower wall, cooling chamber inner shell (19) fixed connection is at cooling chamber shell (17) inside wall, go back even wind net of fixedly connected with (18) between cooling chamber inner shell (19) and cooling chamber shell (17), cooling chamber inner shell (19) lateral wall is provided with multiunit blow hole (20), multiunit blow hole (20) all are towards the setting of cooling chamber inner shell (19) center one end downward sloping.

5. The apparatus of claim 4, wherein the apparatus comprises: the air suction cover (21) is fixedly connected to the lower wall of the cooling cavity shell (17), and an air baffle (31) is fixedly connected to the inner side wall of the air suction cover (21).

6. The apparatus of claim 5, wherein the apparatus comprises: the cooling generation device comprises an air compressor (12), a gas storage tank (13), an exhaust fan (14), a first gas distributor (15) and a second gas distributor (16), the air compressor (12), the gas storage tank (13) and the exhaust fan (14) are sequentially and fixedly connected to the inner lower wall of the cooling cabinet (3) from left to right, the first gas distributor (15) and the second gas distributor (16) are fixedly connected to the inner right wall of the cooling cabinet (3) in an up-down distribution manner, the air compressor (12), the gas storage tank (13) and the first gas distributor (15) are fixedly connected through pipelines, the exhaust fan (14) is fixedly connected with the second gas distributor (16) through pipelines, and one ends of the first gas distributor (15) and the second gas distributor (16), which are far away from the gas storage tank (13) and the exhaust fan (14), are respectively provided with a plurality of groups of outlets, and one ends of the first gas distributor (15) and the second gas distributor (16) far away from the gas storage tank (13) and the exhaust fan (14) are respectively fixedly connected with the cooling cavity shell (17) and the air suction hood (21) through a plurality of groups of pipelines.

7. The apparatus of claim 6, wherein the apparatus comprises: the spinneret orifices (30) are arranged on the inner wall of the spinneret plate (29) in a circumferential array and in an equal division manner, and the cross section of the spinneret orifices (30) can be in any one of a trilobal shape, a quadralobal shape, a cross shape or a pentalobal shape.

8. A preparation method of antibacterial special-shaped superfine polyester POY (pre-oriented yarn) is characterized by comprising the following steps: the preparation method comprises the following steps:

s1, adding the raw materials of the antibacterial master batch into a stirring barrel (4), uniformly mixing and stirring, adding the dispersing agent and the polyester carrier base into the stirring barrel (4), blending for 40 minutes, and sending the mixture into a first screw extruder (6) through a first static mixer (5) for mixing and extruding to obtain the antibacterial master batch, wherein the screw temperature of the first screw extruder (6) is 250-268 ℃ when the first screw extruder (6) works;

s2, feeding 20% of antibacterial master batches and 80% of polyester chips into a second screw extruder (8) through a mixing barrel (7), blending and melting, extruding, fully mixing the melt through a second static mixer (9), accurately metering and feeding the melt into a spinning box (11) through a metering pump (10), extruding a spinneret plate (29) through a spinneret orifice (30) to form melt trickle, wherein the extrusion temperature of the second screw extruder (8) is as follows: the first zone is 238-245 ℃, the second zone is 250-258 ℃, the third zone is 265-270 ℃, the fourth zone is 273-280 ℃, the fifth zone is 272-275 ℃, the sixth zone is 265-270 ℃, and the screw pressure of the second screw extruder (8) is 80-90 kg/Cm 2;

s3, cooling air generated by an air compressor (12) is subjected to constant pressure through an air storage tank (13), is uniformly distributed through a first air distributor (15), is input into a cooling cavity outer shell (17) through a plurality of groups of pipelines, is subjected to constant pressure again through an air-homogenizing net (18), and is blown out through an air blowing hole (20) in the inner wall of a cooling cavity inner shell (19), a melt trickle is cooled and solidified through air blowing to form nascent fibers, the cooling air flows downwards along the nascent fibers, passes through a wind shield (31), a plurality of groups of pipelines on the outer wall of an air suction cover (21) form negative pressure through an exhaust fan (14) and a second air distributor (16), and the air subjected to heat exchange nearby the wind shield (31) is extracted, wherein the relative humidity of the cooling air is 85-95%, and the air speed is 0.7-0.85 m/S;

s4, cooling and solidifying the primary fibers, oiling the primary fibers by an oiling wheel (22), after oiling, enabling the tows to pass through a pre-interlacer (23), a first GR guide wheel (24), a second GR guide wheel (25) and a main interlacer (26), and finally winding the tows into POY spinning cakes by a winding machine (27), wherein the oiling concentration of the oiling wheel (22) is 18%, and the rotating speed of the oiling wheel (22) is 4-6 rpm.

9. The method for preparing bacteriostatic special-shaped superfine polyester POY yarn according to claim 8, wherein the method comprises the following steps: the antibacterial master batch comprises the following raw materials in parts by weight: 21% of silver-based inorganic bacteriostatic agent, 0.1% of photooxidation resistant agent, 1% of dispersing agent, 77.9% of polyester carrier, the silver-based inorganic bacteriostatic agent is functional powder which exchanges silver particles through inorganic salt ions, and specifically is carried in nano peroxide or zirconium hydrogen phosphate or nano diatomite, the average particle size of the silver-based inorganic bacteriostatic agent is 10nm, the dispersing agent is powder made of PE, the photooxidation resistant agent is a 2- (acetyl mercaptan) acetamide compound, and the chemical formula is C4H7NO 2S.