Slow-cooling drafting equipment for preparing high-strength nylon melt spinning

Abstract

The invention discloses slow-cooling drafting equipment for preparing high-strength nylon melt spinning yarns, relates to the field of cable installation, and solves the problems that when existing slow-cooling drafting equipment for preparing the high-strength nylon melt spinning yarns is used, cooling around the nylon spinning yarns is not comprehensive and sufficient enough; the nylon spinning machine comprises a machine body, a slow cooling mechanism, a drying mechanism and a drafting mechanism, the slow cooling mechanism comprises a device cylinder, a spraying pipe and a spraying head, and the drying mechanism comprises a drying pipe. The slow cooling mechanism drives the spray pipe to rotate, meanwhile, the spray head breaks cooling water mist, the periphery of the nylon spinning is fully cooled, the drying pipe is driven to rotate in the rotating process of the spray pipe, the periphery of the cooled nylon spinning is dried through the drying mechanism, the nylon spinning is wound and stranded through the drafting mechanism, and the cooling effect is improved. And traction rolling is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, in particular to a slow cooling and drawing device for preparing high-strength nylon melt spinning. Background Art

[0002] Melt spinning is one of the main forming methods of chemical fibers, referred to as melt spinning. The main synthetic fiber varieties such as polyester, nylon, polypropylene, and nylon are all produced by melt spinning. The main characteristics of melt spinning are high winding speed, no need for solvents and precipitants, simple equipment, short process flow, and can melt to form a heat-stable melt fiber-forming polymer. In the process of melt spinning, the raw materials need to be melted and then extruded through the spinneret hole to form filaments, and then slowly cooled and cooled before being pulled and wound by the pulling equipment.

[0003] The existing slow cooling and stretching equipment for nylon melt spinning only uses one or several relatively fixed air ducts and mist channels to spray and cool the spinning during use. Since the spinning is generally ejected in multiple strands, it is difficult for the existing mist to evenly dissipate heat and cool the surroundings of the multiple spinning strands during the ejection process, which can easily lead to uneven spinning cooling, affect the stability of the internal structure, and reduce product quality. Summary of the invention

[0004] The object of the present invention is to provide a slow cooling and stretching device for preparing high-strength nylon melt spinning, which is convenient for comprehensive and efficient cooling and drying operations around the spinning, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a slow cooling and stretching device for preparing high-strength nylon melt spinning, comprising a machine body, a slow cooling mechanism, a drying mechanism and a stretching mechanism, the machine body is fixedly connected to a melt spinneret, the output end of the melt spinneret is fixedly connected to a spinneret disk, the spinneret disk is evenly provided with a plurality of groups of spinneret holes, the slow cooling mechanism comprises a device cylinder fixedly installed at the bottom of the spinneret disk, the device cylinder is rotatably connected to a plurality of groups of spray pipes, the top end of the spray pipe is connected to the bottom of the spinneret hole, the inner wall of the spray pipe is evenly and fixedly connected to a plurality of groups of nozzles. , used for conveying the ejected nylon spinning into the spray pipe, driving the spray pipe to rotate while allowing the nozzle to break the cooling water mist, and fully cooling the surrounding of the nylon spinning. The drying mechanism includes a drying pipe coaxially fixedly installed at the bottom end of the spray pipe, which is used to drive the drying pipe to rotate during the rotation of the spray pipe and dry the surrounding of the cooled nylon spinning. The drafting mechanism is installed on the machine body, and is used to wind the nylon spinning output from the drying pipe into strands, and to pull and reel it up, so as to facilitate comprehensive and efficient cooling and drying operations around the spinning.

[0006] Preferably, the slow cooling mechanism also includes a fixed cylinder fixedly installed at the bottom of the device cylinder, a driving shaft is rotatably connected in the device cylinder, a partition plate is fixedly connected to the middle of the fixed cylinder, the spray tube and the drying tube are respectively located on the upper and lower sides of the partition plate, and a driving member is provided in the device cylinder for driving the driving shaft to rotate while allowing multiple groups of spray tubes to rotate synchronously. A control member is provided in the fixed cylinder that can assist in aerosol transportation during the rotation of the driving shaft, so as to facilitate the transportation of the ejected nylon spinning into the spray tube, drive the spray tube to rotate, and allow the nozzle to break the cooling water mist, thereby fully cooling the surrounding area of ​​the nylon spinning.

[0007] Preferably, the control member includes a first lifting plate and a second lifting plate which are slidably connected to the inner wall of the fixed cylinder, the drive shaft passes through the first lifting plate and the second lifting plate, the outer wall of the drive shaft is provided with two groups of reciprocating threaded grooves which are respectively threadedly connected to the first lifting plate and the second lifting plate, the spray pipe passes through the first lifting plate and is movably connected to the first lifting plate, the drying pipe passes through the second lifting plate and is movably connected to the second lifting plate, and the fixed cylinder is provided with a conveying member for water mist conveying, so as to assist the aerosol conveying during the rotation of the drive shaft.

[0008] Preferably, the conveying member includes two groups of input pipes respectively connected to the side surfaces of the fixed cylinder, the input pipes are used to convey cooling mist, the openings of the two groups of input pipes are respectively located on the upper and lower sides of the first lifting plate, the side wall of the spray pipe is provided with multiple groups of conveying pipes, the upper and lower ends of the conveying pipes are both connected to the fixed cylinder, and one end of the multiple groups of nozzles are respectively connected to the conveying pipes, so as to facilitate water mist conveyance.

[0009] Preferably, the drying mechanism also includes two groups of air inlet pipes connected to the side of the fixed cylinder, the air inlet pipe has a heating function, the drying pipe is provided with a drying groove for connecting the fixed cylinder and the drying pipe, the two groups of openings of the drying groove are respectively located on the upper and lower sides of the second lifting plate, and the machine body is provided with a pumping member for pumping the gas and liquid in the spray pipe into the air inlet pipe, so as to drive the drying pipe to rotate during the rotation of the spray pipe and dry the nylon spinning area after cooling.

[0010] Preferably, the pumping member includes a fixed box fixedly mounted on the body, one end of the air inlet pipe is connected to the fixed box, the side of the fixed box is connected to a connecting pipe, one end of the connecting pipe is fixedly connected to the outer wall of the fixed cylinder, an annular groove connected to one end of the connecting pipe is provided on the partition plate, a slope ring is fixedly connected to the inner wall of the bottom end of the spray pipe, a connecting pipe connected to the annular groove is provided on the slope ring, a filter is fixedly connected in the fixed box, the filter is used to filter the moisture in the gas in the connecting pipe and transport the gas into the air inlet pipe, so as to facilitate the pumping of the gas and liquid in the spray pipe into the air inlet pipe.

[0011] Preferably, the input pipe, the air intake pipe and the connecting pipe are all provided with a first one-way valve for controlling the aerosol to enter the fixed cylinder from the input pipe and the air intake pipe in one direction and then be output from the annular groove to the connecting pipe. The upper and lower inner walls of the delivery pipe and the drying tank are fixedly connected with a second one-way valve. The second one-way valve is used to control the aerosol to enter the delivery pipe and the drying tank in one direction from the fixed cylinder, so as to facilitate the control of the one-way flow and delivery of the aerosol.

[0012] Preferably, the stretching mechanism includes a fixed plate fixedly mounted on the bottom end of the fixed cylinder, the driving shaft and the bottom end of the drying tube are rotatably connected to the fixed plate, the bottom end of the fixed cylinder is fixedly connected to a collecting bucket, a guide wheel and a winding wheel are rotatably connected inside the machine body, and a winding device for winding the nylon yarn into strands is fixedly connected to the machine body, so as to facilitate winding the nylon yarn output from the drying tube into strands and pulling and winding it.

[0013] Preferably, the driving member includes a driving motor fixedly installed in the device barrel, the output end of the driving motor is coaxially fixedly connected with a driving gear, the top of the driving shaft is coaxially fixedly connected with the bottom of the driving gear, and the outer wall of the spray tube is fixedly connected with an external gear ring meshing with the driving gear, so as to drive the driving shaft to rotate while allowing multiple groups of spray tubes to rotate synchronously.

[0014] Preferably, the first lifting plate and the second lifting plate are both fixedly connected with bellows on the upper and lower sides, the upper end of the bellows on the upper side of the first lifting plate is rotatably connected to the bottom end of the driving gear, the bottom end of the bellows on the lower side of the first lifting plate is fixedly connected to the top surface of the partition plate, the top end of the bellows on the upper side of the second lifting plate is fixedly connected to the bottom surface of the partition plate, and the bottom end of the bellows on the lower side of the second lifting plate is fixedly connected to the top surface of the fixed plate, so as to facilitate the separation of the space in the fixed cylinder from the reciprocating thread groove, thereby preventing the aerosol from flowing through the reciprocating thread groove on the upper and lower sides of the first lifting plate and the second lifting plate, thereby affecting the aerosol pumping efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The invention provides a slow cooling and stretching device for preparing high-strength nylon melt spinning, which solves the problem that the existing slow cooling and stretching device for preparing high-strength nylon melt spinning is not sufficiently and completely cooled around the nylon spinning when in use, and the spinning strength is easily reduced due to uneven cooling. The sprayed nylon spinning is transported into a spray tube, and the spray tube is driven to rotate by a slow cooling mechanism, while the nozzle is allowed to break the cooling water mist, so that the area around the nylon spinning is fully cooled. During the rotation of the spray tube, the drying tube is driven to rotate, and the area around the cooled nylon spinning is dried by the drying mechanism. The nylon spinning output from the drying tube is wound into strands by the stretching mechanism, and is pulled and reeled. The device has a compact structure, and only one set of driving motors is used to achieve the purpose of overall transportation of aerosol and comprehensive cooling and drying around the nylon spinning. It is efficient in operation and convenient in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the partial structure of the drafting mechanism of the present invention;

[0019] Figure 3 for Figure 2 A magnified image of area A;

[0020] Figure 4 It is a schematic diagram of the partial structure of the slow cooling mechanism of the present invention;

[0021] Figure 5 It is a schematic diagram of the local structure of the driving member of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view of area B;

[0023] Figure 7 It is a partial structural cross-sectional view of the slow cooling mechanism of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of area C in the middle;

[0025] Fig. 9 It is a schematic diagram of the local structure of the drying mechanism of the present invention;

[0026] Fig.10 for Fig. 9 Enlarged view of area D in the middle.

[0027] In the figure: 1-body; 2-melt spinneret; 3-spinneret disk; 4-spinneret hole; 5-slow cooling mechanism; 6-device cylinder; 7-spray pipe; 8-sprinkler; 9-drying mechanism; 10-drying tube; 11-drafting mechanism; 12-fixed cylinder; 13-driving shaft; 14-partition plate; 15-first lifting plate; 16-second lifting plate; 17-reciprocating thread groove; 18-input pipe; 19-transport pipe; 20-intake Tube; 21-drying tank; 22-fixed box; 23-connecting pipe; 24-annular groove; 25-slope ring; 26-connecting pipe; 27-filter; 28-first one-way valve; 29-second one-way valve; 30-fixed plate; 31-collecting bucket; 32-guide wheel; 33-winding wheel; 34-winding equipment; 35-driving motor; 36-driving gear; 37-external gear ring; 38-corrugated pipe; 39-nylon spinning. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 10 The present invention provides a technical solution: a slow cooling and stretching device for preparing high-strength nylon melt spinning, comprising a machine body 1, a slow cooling mechanism 5, a drying mechanism 9 and a stretching mechanism 11, the machine body 1 is fixedly connected with a melt spinneret 2, the output end of the melt spinneret 2 is fixedly connected with a spinneret disk 3, the spinneret disk 3 is evenly provided with multiple groups of spinneret holes 4, the slow cooling mechanism 5 comprises a device barrel 6 fixedly installed at the bottom of the spinneret disk 3, multiple groups of spray pipes 7 are rotatably connected in the device barrel 6, the top of the spray pipe 7 is connected to the bottom of the spinneret hole 4, and the inner wall of the spray pipe 7 is evenly fixedly connected to the bottom of the spinneret hole 4. A plurality of nozzles 8 are connected, which are used to convey the ejected nylon spinning 39 into the spray pipe 7, and drive the spray pipe 7 to rotate while allowing the nozzles 8 to break the cooling water mist, so as to fully cool down the surrounding of the nylon spinning 39. The drying mechanism 9 includes a drying pipe 10 coaxially fixedly installed at the bottom end of the spray pipe 7, which is used to drive the drying pipe 10 to rotate during the rotation of the spray pipe 7, and dry the surrounding of the cooled nylon spinning 39. The drafting mechanism 11 is installed on the machine body 1, and is used to wind the nylon spinning 39 output from the drying pipe 10 into strands, and to pull and reel them up.

[0030] The slow cooling mechanism 5 also includes a fixed cylinder 12 fixedly installed at the bottom of the device cylinder 6, a drive shaft 13 is rotatably connected in the device cylinder 6, a partition plate 14 is fixedly connected to the middle of the fixed cylinder 12, the spray tube 7 and the drying tube 10 are respectively located on the upper and lower sides of the partition plate 14, and a driving member is provided in the device cylinder 6 for driving the drive shaft 13 to rotate while allowing multiple groups of spray tubes 7 to rotate synchronously. The driving member includes a driving motor 35 fixedly installed in the device cylinder 6, and the model of the driving motor 35 is preferably YYHS-40. The output end of the driving motor 35 is coaxially fixedly connected with a driving gear 36, the top of the driving shaft 13 is coaxially fixedly connected with the bottom of the driving gear 36, the outer wall of the spray tube 7 is fixedly connected with an outer gear ring 37 meshing with the driving gear 36, and a control member is provided in the fixed cylinder 12 that can assist in aerosol transportation during the rotation of the driving shaft 13.

[0031] The control component includes a first lifting plate 15 and a second lifting plate 16 which are slidably connected to the inner wall of the fixed cylinder 12, the drive shaft 13 passes through the first lifting plate 15 and the second lifting plate 16, the outer wall of the drive shaft 13 is provided with two groups of reciprocating thread grooves 17 which are respectively threadedly connected to the first lifting plate 15 and the second lifting plate 16, the spray pipe 7 passes through the first lifting plate 15 and is movably connected to the first lifting plate 15, the drying pipe 10 passes through the second lifting plate 16 and is movably connected to the second lifting plate 16, and a conveying component for water mist conveying is provided on the fixed cylinder 12.

[0032] The conveying member includes two groups of input pipes 18 respectively connected to the side of the fixed cylinder 12, and the input pipes 18 are used to convey the cooling mist. The openings of the two groups of input pipes 18 are respectively located on the upper and lower sides of the first lifting plate 15. The side wall of the spray pipe 7 is provided with multiple groups of conveying pipes 19. The upper and lower ends of the conveying pipes 19 are connected to the fixed cylinder 12, and one end of the multiple groups of nozzles 8 is respectively connected to the conveying pipes 19.

[0033] The drying mechanism 9 also includes two groups of air inlet pipes 20 connected to the side of the fixed cylinder 12, the air inlet pipe 20 has a heating function, and a drying groove 21 for connecting the fixed cylinder 12 and the drying tube 10 is opened on the drying tube 10. The two groups of openings of the drying groove 21 are respectively located on the upper and lower sides of the second lifting plate 16. The body 1 is provided with a pumping member for pumping the gas and liquid in the spray tube 7 into the air inlet pipe 20.

[0034] The pumping part includes a fixed box 22 fixedly mounted on the body 1, one end of the air inlet pipe 20 is connected to the fixed box 22, the side of the fixed box 22 is connected to a connecting pipe 23, one end of the connecting pipe 23 is fixedly connected to the outer wall of the fixed cylinder 12, an annular groove 24 connected to one end of the connecting pipe 23 is provided on the partition plate 14, a slope ring 25 is fixedly connected to the inner wall of the bottom end of the spray pipe 7, a connecting pipe 26 connected to the annular groove 24 is provided on the slope ring 25, and a filter screen 27 is fixedly connected inside the fixed box 22, and the filter screen 27 is used to filter the moisture in the gas in the connecting pipe 23 and transport the gas to the air inlet pipe 20.

[0035] The input pipe 18, the air intake pipe 20 and the connecting pipe 23 are all provided with a first one-way valve 28 for controlling the aerosol to enter the fixed cylinder 12 from the input pipe 18 and the air intake pipe 20 in one direction, and then be output from the annular groove 24 to the connecting pipe 23. The inner walls of the upper and lower ends of the delivery pipe 19 and the drying tank 21 are fixedly connected with a second one-way valve 29. The second one-way valve 29 is used to control the aerosol to enter the delivery pipe 19 and the drying tank 21 in one direction from the fixed cylinder 12.

[0036] The drawing mechanism 11 includes a fixed plate 30 fixedly installed on the bottom end of the fixed cylinder 12, the driving shaft 13 and the bottom end of the drying tube 10 are rotatably connected to the fixed plate 30, the bottom end of the fixed cylinder 12 is fixedly connected to a collecting bucket 31, a guide wheel 32 and a winding wheel 33 are rotatably connected in the machine body 1, and a winding device 34 for winding nylon spun yarn 39 into strands is fixedly connected to the machine body 1.

[0037] The upper and lower sides of the first lifting plate 15 and the second lifting plate 16 are fixedly connected with bellows 38. The upper end of the bellows 38 on the upper side of the first lifting plate 15 is rotatably connected to the bottom end of the driving gear 36, the bottom end of the bellows 38 on the lower side of the first lifting plate 15 is fixedly connected to the top surface of the partition plate 14, the top end of the top bellows 38 on the upper side of the second lifting plate 16 is fixedly connected to the bottom surface of the partition plate 14, and the bottom end of the bellows 38 on the lower side of the second lifting plate 16 is fixedly connected to the top surface of the fixed plate 30.

[0038] In this embodiment, the molten raw material is sprayed into the spray tube 7 through the spinneret 4 by the melt spinneret 2, and the nylon spinning 39 enters the drying tube 10 after passing through the slope ring 25, and then enters the collecting bucket 31 from the bottom end of the drying tube 10, and is discharged through the bottom end of the collecting bucket 31. The multiple strands of nylon spinning 39 are guided by the guide wheel 32 and enter the winding device 34, and are wound into a strand of spinning, and then pulled and wound by the winding wheel 33 to complete the processing of high-strength nylon spinning 39.

[0039] During the transportation of the nylon spinning 39 in the spray pipe 7, the driving motor 35 drives the driving gear 36 to rotate, so that the outer gear ring 37 drives the spray pipe 7 to rotate together with the drying pipe 10 at the bottom, and the driving gear 36 drives the driving shaft 13 to rotate. During the rotation of the driving shaft 13, the first lifting plate 15 and the second lifting plate 16 are driven to reciprocate and lift through the reciprocating thread groove 17, and the volume in the fixed cylinders 12 on the upper and lower sides is continuously changed. When the first lifting plate 15 moves up, the volume of the upper fixed cylinder 12 of the first lifting plate 15 decreases, and the volume of the lower side increases, and the aerosol is input into the fixed cylinder 12 through the input pipe 18 and the first one-way valve 28 at the bottom, and the aerosol in the upper fixed cylinder 12 is pushed into the conveying pipe 19 through the second one-way valve 29, and sprayed into the spray pipe 7 through the nozzle 8. At this time, since the spray pipe 7 is in a rotating state, the cooling aerosol can be evenly sprayed around each spinning, making the cooling more uniform and efficient.

[0040] Similarly, when the first lifting plate 15 moves downward, the aerosol on the lower side is transported to the delivery pipe 19 through the second one-way valve 29 at the bottom to be sprayed, and the upper area performs the aerosol suction function. In this way, the aerosol in the input pipe 18 can be continuously pumped into the fixed cylinder 12 and then sprayed through the nozzle 8. After the aerosol is condensed, it is thrown to the inner wall of the spray pipe 7 and flows downward. It is collected in the annular groove 24 through the connecting pipe 26 on the slope ring 25. At the same time, the nylon spinning 39 will also scrape off a part of the water mist adhered to the surface through the annular groove 24 during the process of passing through the slope ring 25.

[0041] When the second lifting plate 16 rises, air is evacuated from the fixed box 22 through the air inlet pipe 20 and the first one-way valve 28 below, thereby achieving the purpose of evacuating the connecting pipe 23, and the aerosol and water droplets in the annular groove 24 and the connecting pipe 26 are pumped into the fixed box 22 for storage through the first one-way valve 28 and the connecting pipe 23, thereby improving the collection efficiency of the aerosol. At the same time, the aerosol is filtered by the filter 27 and transported to the air inlet pipe 20 for heating, and then transported to the fixed cylinder 12. The second lifting plate 16 compresses the space on the upper side, so that the heated gas in the upper area is discharged into the drying cylinder through the upper drying groove 21 and the second one-way valve 29 to dry the area around the nylon spinning 39. During the drying process, the water stains on the surface of the nylon spinning 39 are vaporized and absorb heat, thereby achieving the function of synchronous cooling during the drying process of the nylon spinning 39, so that the output nylon spinning 39 is cooled more thoroughly and evenly, and the surface drying is convenient for winding and reeling operations.

[0042] Similarly, when the second lifting plate 16 moves downward, the heated gas in the lower area is discharged into the drying tube 10 through the second one-way valve 29 and the drying tank 21 at the bottom for drying operation, and the upper side of the second lifting plate 16 performs a vacuum operation simultaneously, and this reciprocating operation can achieve the purpose of continuous vacuuming and gas transportation and drying. The device has a compact structure and only uses one set of drive motors 35 to achieve the purpose of overall transportation of aerosol and comprehensive cooling and drying around the nylon spinning 39. It has efficient operation and convenient operation.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slow cooling and drawing device for preparing high-strength nylon melt spinning, characterized in that: include: A machine body (1), wherein a melt spinning machine (2) is fixedly connected to the machine body (1), a spinneret (3) is fixedly connected to the output end of the melt spinning machine (2), and a plurality of groups of spinneret holes (4) are evenly arranged on the spinneret (3); Also includes: A slow cooling mechanism (5), the slow cooling mechanism (5) comprising a device barrel (6) fixedly mounted on the bottom of the spinneret (3), a plurality of groups of spray tubes (7) rotatably connected in the device barrel (6), the top of the spray tube (7) being connected to the bottom of the spinneret hole (4), a plurality of groups of nozzles (8) being evenly and fixedly connected to the inner wall of the spray tube (7), for conveying the ejected nylon spinning (39) into the spray tube (7), driving the spray tube (7) to rotate while allowing the nozzles (8) to break the cooling water mist, thereby fully cooling the surrounding of the nylon spinning (39); A drying mechanism (9), the drying mechanism (9) comprising a drying tube (10) coaxially fixedly mounted on the bottom end of the spray tube (7), for driving the drying tube (10) to rotate during the rotation of the spray tube (7), and drying the surroundings of the cooled nylon spinning fibers (39); A drafting mechanism (11) is installed on the machine body (1) and is used to wind the nylon spun yarn (39) output from the drying tube (10) into strands and to pull and reel them up.

2. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 1, characterized in that: The slow cooling mechanism (5) also includes a fixed cylinder (12) fixedly mounted on the bottom of the device cylinder (6), a driving shaft (13) rotatably connected inside the device cylinder (6), a partition plate (14) fixedly connected to the middle of the fixed cylinder (12), the spray tube (7) and the drying tube (10) are respectively located on the upper and lower sides of the partition plate (14), the device cylinder (6) is provided with a driving member for driving the driving shaft (13) to rotate and simultaneously allowing multiple groups of spray tubes (7) to rotate synchronously, and the fixed cylinder (12) is provided with a control member capable of assisting aerosol transport during the rotation of the driving shaft (13).

3. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 2, characterized in that: The control member comprises a first lifting plate (15) and a second lifting plate (16) which are slidably connected to the inner wall of the fixed cylinder (12); the driving shaft (13) passes through the first lifting plate (15) and the second lifting plate (16); the outer wall of the driving shaft (13) is provided with two groups of reciprocating thread grooves (17) which are respectively threadedly connected to the first lifting plate (15) and the second lifting plate (16); the spray pipe (7) passes through the first lifting plate (15) and is movably connected to the first lifting plate (15); the drying pipe (10) passes through the second lifting plate (16) and is movably connected to the second lifting plate (16); and a conveying member for conveying water mist is provided on the fixed cylinder (12).

4. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 3, characterized in that: The conveying member comprises two groups of input pipes (18) respectively connected to the side of the fixed cylinder (12), the input pipes (18) are used to convey cooling mist, the openings of the two groups of input pipes (18) are respectively located on the upper and lower sides of the first lifting plate (15), the side wall of the spray pipe (7) is provided with a plurality of groups of conveying pipes (19), the upper and lower ends of the conveying pipes (19) are both connected to the fixed cylinder (12), and one end of the plurality of groups of nozzles (8) is respectively connected to the conveying pipes (19).

5. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 4, characterized in that: The drying mechanism (9) further comprises two groups of air inlet pipes (20) connected to the side of the fixed cylinder (12), the air inlet pipes (20) having a heating function, a drying groove (21) for connecting the fixed cylinder (12) and the drying pipe (10) is provided on the drying pipe (10), the two groups of openings of the drying groove (21) are respectively located on the upper and lower sides of the second lifting plate (16), and a pumping member for pumping gas and liquid in the spray pipe (7) into the air inlet pipe (20) is provided on the machine body (1).

6. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 5, characterized in that: The pumping member comprises a fixed box (22) fixedly mounted on the body (1); one end of the air inlet pipe (20) is connected to the fixed box (22); a connecting pipe (23) is connected to the side of the fixed box (22); one end of the connecting pipe (23) is fixedly connected to the outer wall of the fixed cylinder (12); an annular groove (24) connected to one end of the connecting pipe (23) is formed on the partition plate (14); a slope ring (25) is fixedly connected to the inner wall of the bottom end of the spray pipe (7); a connecting pipe (26) connected to the annular groove (24) is formed on the slope ring (25); a filter screen (27) is fixedly connected inside the fixed box (22); the filter screen (27) is used to filter moisture in the gas in the connecting pipe (23) and transport the gas to the air inlet pipe (20).

7. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 6, characterized in that: The input pipe (18), the air intake pipe (20) and the connecting pipe (23) are all provided with a first one-way valve (28) for controlling the aerosol to enter the fixed cylinder (12) from the input pipe (18) and the air intake pipe (20) in one direction and then be output from the annular groove (24) to the connecting pipe (23). The inner walls of the upper and lower ends of the delivery pipe (19) and the drying tank (21) are both fixedly connected with a second one-way valve (29). The second one-way valve (29) is used to control the aerosol to enter the fixed cylinder (12) into the delivery pipe (19) and the drying tank (21) in one direction.

8. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 3, characterized in that: The drafting mechanism (11) comprises a fixed plate (30) fixedly mounted on the bottom end of the fixed cylinder (12); the driving shaft (13) and the bottom end of the drying tube (10) are both rotatably connected to the fixed plate (30); a collecting bucket (31) is fixedly connected to the bottom end of the fixed cylinder (12); a guide wheel (32) and a winding wheel (33) are rotatably connected inside the machine body (1); and a winding device (34) for winding nylon spun yarn (39) into strands is fixedly connected to the machine body (1).

9. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 8, characterized in that: The driving member comprises a driving motor (35) fixedly installed in the device barrel (6), the output end of the driving motor (35) is coaxially fixedly connected with a driving gear (36), the top end of the driving shaft (13) is coaxially fixedly connected with the bottom of the driving gear (36), and the outer wall of the spray pipe (7) is fixedly connected with an outer gear ring (37) meshing with the driving gear (36).

10. The slow cooling and stretching device for preparing high-strength nylon melt spinning according to claim 9, characterized in that: The first lifting plate (15) and the second lifting plate (16) are both fixedly connected with bellows (38) on the upper and lower sides; the upper end of the bellows (38) on the upper side of the first lifting plate (15) is rotatably connected to the bottom end of the driving gear (36); the bottom end of the bellows (38) on the lower side of the first lifting plate (15) is fixedly connected to the top surface of the partition plate (14); the top end of the bellows (38) on the upper side of the second lifting plate (16) is fixedly connected to the bottom surface of the partition plate (14); and the bottom end of the bellows (38) on the lower side of the second lifting plate (16) is fixedly connected to the top surface of the fixed plate (30).

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