Production equipment and process for regenerating spandex filaments from spandex polymerization waste liquid

Abstract

The production equipment comprises a base, the upper end of the base is connected with a kettle body, the base is connected with a preparation part, and the preparation part comprises a spinning device installed on the base; the processing part is arranged on the kettle body and used for assisting in processing spandex waste silk, the processing part comprises a first motor installed on the right side of the top of the kettle body, the output end of the left side of the first motor is connected with a bevel gear assembly, and the upper end in the kettle body is connected with an adjusting part. According to the production equipment and process for regenerating the spandex filaments from the spandex polymerization waste liquid, the air supply piece is matched with the cylinder body, the stirring frame, the ventilation ring, the guide pipe, the communicating groove, the ventilation block, the heat-resistant air bag, the movable ring and the safety valve, and the function of adjusting the space in the kettle body is achieved through telescopic adjustment of the heat-resistant air bag while heating and stirring in the kettle body are not affected.

Description

Technical Field

[0001] The invention relates to the technical field of spandex yarn regeneration from spandex polymerization wastewater, and in particular to production equipment and a process for regenerating spandex yarn from spandex polymerization wastewater. Background Art

[0002] The regeneration of spandex yarn is achieved by recycling the spandex waste yarn and regenerating it through a polymer solution. A method for regenerating spandex from spandex waste yarn with reference to publication number CN112538667B includes drying the spandex waste yarn in an oxygen-isolated environment, and then mixing the dried spandex waste yarn with a non-protonic polar solvent under the protection of an inert gas, and heating and dissolving them. A high-stability regenerated spandex fiber system based on spandex waste yarn and a preparation method thereof with reference to publication number CN115302659A includes a shell, a cooling shell is fixedly connected to the upper end of the shell, a first cylinder is fixedly connected to the inner middle end of the shell, and a grinding The roller fits tightly with the surface of the blade under the action of the slide rod and the spring, and grinds the blade end to make the blade sharp. As described in the above patent, when the existing production equipment for regenerating spandex yarn from waste spandex polymer liquid is used, it is necessary to directly introduce the spandex waste yarn into the kettle after it is crushed, and after vacuuming and injecting nitrogen, it is heated and stirred with the corresponding solvent. However, the space in the kettle is large and it is difficult to adjust the space without affecting the subsequent stirring, which results in a long time for the device to vacuum and inject nitrogen, and it is easy to suck the spandex waste yarn to the vacuum end during the vacuuming process, causing blockage and affecting the regeneration efficiency of the spandex yarn. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a production equipment and process for regenerating spandex yarn from spandex polymerization waste liquid, which solves the problems of long vacuuming and nitrogen injection time in the equipment, easy blockage of the vacuuming end due to spandex waste yarn, and affected spandex yarn regeneration efficiency.

[0004] To achieve the above purpose, the present invention is implemented by the following technical scheme: a production device for regenerating spandex yarn from spandex polymerization waste liquid, comprising a base, the upper end of the base is connected to a kettle body, the base is connected to a preparation part for preparing spandex waste yarn regenerated from spandex polymerization liquid, and the preparation part comprises:

[0005] A spinning device, installed at the bottom of the attached kettle body, is used for the spinning treatment of spandex polymer solution;

[0006] A processing part is arranged on the kettle body for assisting in processing spandex waste yarn, the processing part comprises a first motor installed on the right side of the top of the kettle body, a bevel gear assembly is connected to the left output end of the first motor, an adjusting part driven by the bevel gear assembly is connected to the upper end of the kettle body, the adjusting part comprises a stirring frame rotatably connected to the upper end of the kettle body, the stirring frame comprises a cylinder driven by the bevel gear assembly, a stirring frame is installed on the edge of the cylinder body, a ventilation ring rotatably connected to the top of the cylinder body is installed on the upper end of the outer side of the kettle body, a conduit is installed on the upper left end of the ventilation ring, and the upper clamp of the cylinder body is provided. The layer is provided with a connecting groove connected with the ventilation ring, the bottom of the cylinder is provided with a feeding trough, the upper side of the stirring frame is provided with an air bag assembly for adjusting the space in the kettle body, the top outside the kettle body is connected with a driving part, the kettle body is provided with a casing near the driving part end, a feeding pipe is obliquely arranged on the right side of the casing, a conveying part for conveying spandex waste yarn is arranged in the middle part of the cylinder body, a vacuum pumping part for vacuuming the kettle body is arranged on the right side of the base, a gas supply part for supplying nitrogen in the kettle body is arranged on the left side of the base, and a liquid supply part for introducing solution into the kettle body is arranged on the rear side of the base.

[0007] Preferably, the output end of the first motor is coaxially fixedly connected to the driving bevel gear in the bevel gear assembly, the driven bevel gear in the bevel gear assembly is coaxially fixedly connected to the cylinder, the stirring frame is in contact with the inner wall of the kettle, and the inner wall interlayer of the kettle is provided with a heating rod electrically connected to an external controller.

[0008] Preferably, the airbag assembly includes three groups of ventilation blocks installed on the upper side of the stirring frame, a heat-resistant airbag is installed at the lower end of the ventilation block, the heat-resistant airbag is an annular airbag, a movable ring slidably connected to the stirring frame is installed at the bottom of the heat-resistant airbag, a safety valve is installed near the heat-resistant airbag of the movable ring, and a ventilation groove with an embedded ventilation filter plate is provided on the movable ring near the lower side of the safety valve.

[0009] Preferably, the driving member includes a second motor installed at the upper end of the outer side of the kettle body, and the upper output end of the second motor is connected to a gear assembly. The driven gear in the gear assembly is coaxially fixedly connected to a sleeve rotatably connected to the casing, and a cross shaft is vertically slidably connected in the sleeve. The bottom of the cross shaft is connected to the conveying member and the top is rotatably connected to a connecting block. A cylinder for adjusting the height of the connecting block is vertically arranged on the top of the outer side of the kettle body.

[0010] Preferably, the driving gear in the gear assembly is coaxially fixedly connected to the output end of the second motor, a cross groove is vertically penetrated in the sleeve and is slidably connected to the cross shaft, the output end at the bottom of the cylinder is fixedly connected to the connecting block, the top of the cross shaft is provided with a convex ring rotatably connected to the connecting block, the conveying member includes a stopper fixedly connected to the bottom of the cross shaft, the bottom of the stopper is coaxially fixedly connected to an auger that fits the inner wall of the cylinder, and the bottom of the auger is coaxially fixedly connected to a piston block matching the connecting groove.

[0011] Preferably, the vacuum pump includes a vacuum pump installed on the right side of the base, a condenser is installed on the left suction end of the vacuum pump, a first valve is installed on the left side of the condenser, a filter shell fixedly connected to the kettle body and with a built-in filter screen is installed on the left side of the first valve, and an adsorption cylinder with a built-in activated carbon screen is installed on the exhaust end of the vacuum pump.

[0012] Preferably, the air supply component includes an air supply pump installed on the left side of the base for extracting nitrogen, a connecting pipe is installed at the exhaust end of the air supply pump, a three-way valve is provided on the right side of the connecting pipe, an injection pipe fixedly connected to the conduit is installed on the right side of the three-way valve, a jet ring is installed on the top edge of the kettle body, and a branch pipe fixedly connected to the jet ring is provided at the bottom of the three-way valve.

[0013] Preferably, the liquid supply component is installed on a liquid pump on the rear side of the base, a second valve is installed at the discharge end of the liquid pump, an injection tube fixedly connected to the upper end of the kettle body is installed in front of the second valve, and a liquid extraction tube for extracting the preparation solvent is installed at the liquid extraction end of the liquid pump.

[0014] The present invention also discloses a production process for regenerating spandex yarn from spandex polymerization waste liquid, which specifically comprises the following steps:

[0015] Step 1: The user starts the air supply pump and the second motor. The second motor drives the sleeve, the cross shaft, the block, the auger, and the piston block to rotate through the gear assembly, and the crushed spandex waste silk from the outside is introduced into the cylinder through the feed pipe and the casing. The auger is rotated to transport the spandex waste silk downward along the inside of the cylinder, and the crushed spandex waste silk is introduced into the bottom of the kettle body through the feed trough. The air supply pump extracts nitrogen from the outside and introduces it into the heat-resistant airbag through the connecting pipe, the three-way valve, the injection pipe, the conduit, the ventilation ring, the connecting groove, the inside of the stirring frame, the ventilation block, and the heat-resistant airbag. The heat-resistant airbag expands and drives the movable ring to move down along the stirring frame. After the heat-resistant airbag expands to a suitable volume, the air supply pump is turned off. After the appropriate amount of spandex waste silk is introduced, the second motor is turned off;

[0016] Step 2: Let the cylinder drive the cross shaft, the block, the auger, and the piston block to move downward through the connecting block, so that the piston block seals the connecting groove. After the spandex waste yarn is introduced, the kettle body is preheated by the heating rod in the interlayer of the kettle body, and the spandex waste yarn is dried by the preheated kettle body. The vacuum pump, the condenser, the first valve, and the first motor are turned on. The first motor drives the cylinder body and the stirring frame to rotate through the bevel gear assembly. The rotating stirring frame breaks up the spandex waste yarn to accelerate drying.

[0017] Step three: The vacuum pump evacuates the kettle body through the condenser, the first valve, and the filter shell. After the kettle body is evacuated, the vacuum pump and the first valve are closed, the three-way valve is reversed, and the air supply pump draws nitrogen and injects it into the kettle body through the branch pipe and the jet ring. The second valve and the liquid pump are opened. The liquid pump injects the solvent, prepolymer solution, chain extender solution, and antioxidant solution into the kettle body through the liquid pipe. The stirring frame that heats the kettle body and rotates is used to heat and stir the spandex waste silk solution mixture to make a spandex spinning stock solution. After the spandex spinning stock solution is prepared, the spinneret is opened to introduce the spandex spinning stock solution in the kettle body into the spinneret for air spinning.

[0018] Preferably, in step three, when the vacuum pump evacuates the kettle, the filter screen in the filter shell filters large particles of impurities in the gas, and when the stirring frame is rotated through the filter shell, the surface of the filter screen is scraped.

[0019] Beneficial Effects

[0020] The present invention provides a production device and process for regenerating spandex yarn from spandex polymerization waste liquid. Compared with the prior art, it has the following beneficial effects:

[0021] (1) The production equipment for regenerating spandex yarn from spandex polymerization waste liquid has an air bag assembly arranged in the equipment so that the air supply part cooperates with the cylinder, stirring frame, ventilation ring, conduit, connecting groove, ventilation block, heat-resistant air bag, movable ring, and safety valve. While not affecting the heating and stirring in the kettle, the heat-resistant air bag can be adjusted to adjust the space in the kettle, which helps the equipment to quickly evacuate and add nitrogen after adding crushed spandex waste yarn, thereby improving the preparation efficiency.

[0022] (2) The production equipment for regenerating spandex yarns from spandex polymerization waste liquid is provided with a driving part and a conveying part in the equipment so that the second motor, the gear assembly, the sleeve, the cross shaft, the connecting block, the cylinder, the stopper, the auger, the piston block, the casing, and the feed pipe cooperate with each other, so that the user can easily guide the crushed spandex waste yarns along the feed pipe, the casing, and the sleeve into the middle end of the bottom of the kettle body, thereby reducing the dispersion of the spandex waste yarns and facilitating the rapid closing of the feeding end after the spandex waste yarns are introduced, thereby improving the feeding efficiency of the device and facilitating the subsequent vacuum operation.

[0023] (3) The production equipment for regenerating spandex yarn from spandex polymerization waste liquid has a vacuum pump installed in the equipment. The vacuum pump performs vacuum treatment on the kettle body through the condenser, the first valve and the filter shell. The condenser liquefies the water vapor in the vacuum treatment to reduce safety hazards and extend the life of the vacuum pump. The filter screen in the filter shell filters large particles of impurities in the gas. When the rotating stirring frame passes through the filter shell, the surface of the filter screen is scraped to prevent blockage. The activated carbon net in the adsorption tube adsorbs the odor in the exhaust gas to reduce the pollution caused by the direct discharge of the vacuum exhaust gas.

[0024] (4) The production equipment for regenerating spandex yarn from spandex polymerization waste liquid is provided with an air supply part in the equipment, and the nitrogen in the nitrogen tank is extracted through an air supply pump and an exhaust pipe, and the nitrogen is supplied to the airbag assembly through a third valve, a connecting pipe, a three-way valve, an injection pipe, a conduit, a ventilation ring, a connecting groove, a stirring rack, and a ventilation block. When it is necessary to supply nitrogen to the inside of the kettle body, the three-way valve is reversed, and nitrogen is introduced into the kettle body from the branch pipe and the jet ring and blown to the inner wall of the kettle body, which not only plays a role in nitrogen protection, but also promotes the falling off of residual materials attached to the inner wall of the kettle body, reduces the subsequent cleaning steps, and improves the regeneration rate of spandex waste yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural cross-sectional view of the present invention;

[0026] Figure 2 It is an enlarged cross-sectional view of the adjusting member of the present invention;

[0027] Figure 3 is an enlarged cross-sectional view of the stirring member of the present invention;

[0028] Figure 4 is an enlarged view of the airbag assembly of the present invention;

[0029] Figure 5 is an enlarged view of the driving member of the present invention;

[0030] Figure 6 is an enlarged view of the conveying member of the present invention;

[0031] Figure 7 It is an enlarged view of the vacuum pumping member of the present invention;

[0032] Figure 8 is an enlarged view of the gas supply member of the present invention;

[0033] Fig. 9 It is an enlarged view of the liquid supply part of the present invention;

[0034] Fig.10 It is a front view of the present invention.

[0035] In the figure: 1, base; 2, kettle body; 3, spinner; 4, processing part; 41, first motor; 42, bevel gear assembly; 43, adjusting part; 431, stirring frame; 4311, cylinder; 4312, stirring frame; 4313, ventilation ring; 4314, conduit; 4315, connecting groove; 4316, feeding chute; 432, air bag assembly; 4321, ventilation block; 4322, heat-resistant air bag; 4323, movable ring; 4324, safety valve; 433, driving part; 4331, second motor; 4332, gear assembly; 4333, sleeve; 4334, cross shaft; 4335, connecting block; 4336, cylinder; 434, casing; 435, feed pipe; 436, conveying member; 4361, stopper; 4362, auger; 4363, piston block; 44, vacuum member; 441, vacuum pump; 442, condenser; 443, first valve; 444, filter shell; 445, adsorption cylinder; 45, air supply member; 451, air supply pump; 452, connecting pipe; 453, three-way valve; 454, injection pipe; 455, branch pipe; 456, jet ring; 46, liquid supply member; 461, liquid pump; 462, second valve; 463, liquid injection pipe. DETAILED DESCRIPTION

[0036] 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.

[0037] See also Figure 1-10 , the present invention provides the following four technical solutions:

[0038] The first embodiment: a production device for regenerating spandex yarn from spandex polymerization waste liquid, comprising a base 1, the upper end of the base 1 is connected to a kettle body 2, the base 1 is connected to a preparation part for preparing spandex waste yarn regenerated from spandex polymerization liquid, the preparation part comprising: a spinner 3, installed at the bottom of the attached kettle body 2 for spandex polymerization liquid spinning treatment, the bottom of the kettle body 2 is connected to the spinner 3 through a fourth valve;

[0039] The processing part 4 is arranged on the kettle body 2 for assisting in processing the spandex waste yarn. The processing part 4 includes a first motor 41 installed on the right side of the top of the kettle body 2. The left output end of the first motor 41 is connected to a bevel gear assembly 42. The upper end of the kettle body 2 is connected to an adjusting part 43 driven by the bevel gear assembly 42. The adjusting part 43 includes a stirring frame 431 rotatably connected to the upper end of the kettle body 2. The stirring frame 431 includes a cylinder 4311 driven by the bevel gear assembly 42. A stirring frame 4312 is installed on the edge of the cylinder 4311. A ventilation ring 4313 rotatably connected to the top of the cylinder 4311 is installed on the upper end of the outer side of the kettle body 2. A conduit 4314 is installed on the upper left end of the ventilation ring 4313. A connecting groove 4315 connected to the ventilation ring 4313 is provided in the upper interlayer of the cylinder 4311. A feeding trough 4316 is provided at the bottom of the cylinder 4311.

[0040] An airbag assembly 432 for adjusting the space in the kettle body 2 is installed on the upper side of the stirring frame 4312, a driving member 433 is connected to the top of the outer side of the kettle body 2, a housing 434 is installed near the end of the driving member 433 of the kettle body 2, the bottom of the housing 434 is rotatably connected and connected to the cylinder 4311, a feed pipe 435 is obliquely arranged on the right side of the housing 434, a conveying member 436 for conveying spandex waste is arranged in the middle of the cylinder 4311, and a vacuum pump for vacuuming the kettle body 2 is installed on the right side of the base 1 Part 44, a gas supply part 45 for supplying nitrogen to the conduit 4314 and the kettle body 2 is arranged on the left side of the base 1, and a liquid supply part 46 for introducing the solution into the kettle body 2 is installed on the rear side of the base 1; the output end of the first motor 41 is coaxially fixedly connected with the driving bevel gear in the bevel gear assembly 42, the driven bevel gear in the bevel gear assembly 42 is coaxially fixedly connected with the cylinder 4311, the stirring frame 4312 is attached to the inner wall of the kettle body 2, and the inner wall interlayer of the kettle body 2 is provided with a heating rod electrically connected to an external controller;

[0041] The airbag assembly 432 includes three groups of ventilation blocks 4321 installed on the upper side of the stirring frame 4312, a heat-resistant airbag 4322 is installed at the lower end of the ventilation block 4321, and the inner end of the upper side of the stirring frame 4312 is provided with a slot connected to the connecting groove 4315 and the ventilation block 4321 respectively. The heat-resistant airbag 4322 is an annular airbag, and a movable ring 4323 slidably connected to the stirring frame 4312 is installed at the bottom of the heat-resistant airbag 4322. A safety valve 4324 is installed in the movable ring 4323 near the heat-resistant airbag 4322, and a ventilation groove with an embedded ventilation filter plate is provided near the lower side of the safety valve 4324 of the movable ring 4323; the liquid supply part 46 is installed at the liquid pump 461 at the rear side of the base 1 , a second valve 462 is installed at the discharge end of the liquid pump 461, a liquid injection pipe 463 fixedly connected to the upper end of the kettle body 2 is installed in front of the second valve 462, and a liquid extraction pipe for extracting the preparation solvent is installed at the liquid extraction end of the liquid pump 461; the air supply part 45 cooperates with the cylinder 4311, the stirring frame 4312, the ventilation ring 4313, the conduit 4314, the connecting groove 4315, the ventilation block 4321, the heat-resistant air bag 4322, the movable ring 4323, and the safety valve 4324, and has the function of adjusting the space in the kettle body 2 without affecting the heating and stirring in the kettle body 2, which is helpful for the equipment to quickly evacuate and add nitrogen after adding the crushed spandex waste yarn;

[0042] The second implementation mode is mainly different from the first implementation mode in that:

[0043] The driving member 433 includes a second motor 4331 installed at the upper end of the outer side of the kettle body 2, the upper output end of the second motor 4331 is connected to a gear assembly 4332, the driven gear in the gear assembly 4332 is coaxially fixedly connected to a sleeve 4333 rotatably connected to the housing 434, a cross shaft 4334 is vertically slidably connected in the sleeve 4333, the bottom of the cross shaft 4334 is connected to the conveying member 436 and the top is rotatably connected to a connecting block 4335, and a cylinder 4336 for adjusting the height of the connecting block 4335 is vertically arranged on the top of the outer side of the kettle body 2;

[0044] The driving gear in the gear assembly 4332 is coaxially fixedly connected to the output end of the second motor 4331, a cross groove is vertically penetrated in the sleeve 4333 and slidably connected to the cross shaft 4334, the bottom output end of the cylinder 4336 is fixedly connected to the connecting block 4335, the top of the cross shaft 4334 is provided with a convex ring rotatably connected to the connecting block 4335, the conveying member 436 includes a stopper 4361 fixedly connected to the bottom of the cross shaft 4334, and the bottom of the stopper 4361 is coaxially fixedly connected to the auger 4362 that fits the inner wall of the cylinder 4311. The bottom of the auger 4362 is coaxially fixedly connected with a piston block 4363 matching the connecting groove 4315, and a gasket is provided on the edge of the piston block 4363; the second motor 4331, the gear assembly 4332, the sleeve 4333, the cross shaft 4334, the connecting block 4335, the cylinder 4336, the stopper 4361, the auger 4362, the piston block 4363, the casing 434, and the feed pipe 435 cooperate with each other, so that the user can easily guide the crushed spandex waste into the middle end of the bottom of the kettle body 2, reduce the spread of spandex waste, and facilitate the rapid closure of the feeding end;

[0045] The third implementation mode is mainly different from the second implementation mode in that:

[0046] The vacuum pump 44 comprises a vacuum pump 441 installed on the right side of the base 1, a condenser 442 is installed on the left side of the vacuum pump 441, a fifth valve is provided at the bottom of the condenser 442, a drain pipe is provided at the bottom of the fifth valve, a first valve 443 is installed on the left side of the condenser 442, a filter shell 444 fixedly connected to the kettle body 2 and having a built-in filter screen is installed on the left side of the first valve 443, an adsorption cylinder 445 with a built-in activated carbon net is installed on the exhaust end of the vacuum pump 441, and the activated carbon net is flush with the inner wall of the kettle body 2; the vacuum pump 441 passes through the condenser 442 , the first valve 443 and the filter shell 444 perform vacuum treatment on the kettle body 2, wherein the condenser 442 performs liquefaction treatment on the water vapor in the vacuum treatment, during which the filter screen in the filter shell 444 filters the large particles of impurities in the gas, and when the rotating stirring frame 4312 passes through the filter shell 444, the surface of the filter screen is scraped to avoid clogging, the fifth valve and the drain pipe play the role of discharging the cooling water retained in the condenser 442, and the activated carbon net in the adsorption cylinder 445 adsorbs the odor in the exhaust gas to reduce pollution;

[0047] The fourth implementation mode is mainly different from the third implementation mode in that:

[0048] The air supply member 45 includes an air supply pump 451 installed on the left side of the base 1 for extracting nitrogen. The air supply pump 451 has an air extraction pipe fixedly connected to an external nitrogen tank at the air extraction end. The air supply pump 451 has a connecting pipe 452 installed at the exhaust end. The connecting pipe 452 is connected to the air supply pump 451 through a third valve. A three-way valve 453 is provided on the right side of the connecting pipe 452. An injection pipe 454 fixedly connected to the guide tube 4314 is installed on the right side of the three-way valve 453. An injection ring 456 is installed on the top edge of the kettle body 2. A branch pipe 456 fixedly connected to the injection ring 456 is provided at the bottom of the three-way valve 453. 5. Nitrogen is extracted from the nitrogen tank through the air supply pump 451 and the exhaust pipe, and then the nitrogen is supplied to the airbag assembly 432 through the third valve, the connecting pipe 452, the three-way valve 453, the injection pipe 454, the conduit 4314, the ventilation ring 4313, the connecting groove 4315, the stirring frame 4312, and the ventilation block 4321. When it is necessary to supply nitrogen to the inside of the kettle body 2, the three-way valve 453 is switched. At this time, nitrogen is introduced into the kettle body 2 from the branch pipe 455 and the jet ring 456 and blows the inner wall of the kettle body 2, which plays a role in nitrogen protection and promotes the falling off of the residual material attached to the inner wall of the kettle body 2.

[0049] The present invention also discloses a production process for regenerating spandex yarn from spandex polymerization waste liquid, which specifically comprises the following steps:

[0050] Step 1: The user opens the third valve and starts the air supply pump 451 and the second motor 4331. The second motor 4331 drives the sleeve 4333, the cross shaft 4334, the stopper 4361, the auger 4362 and the piston block 4363 to rotate through the gear assembly 4332, and the crushed spandex waste silk from the outside is introduced into the cylinder 4311 through the feed pipe 435 and the casing 434. The auger 4362 is rotated to transport the spandex waste silk downward along the inside of the cylinder 4311, and the crushed spandex waste silk is introduced into the bottom of the kettle body 2 through the discharge chute 4316. In the above process, the air supply pump 4 51 extracts nitrogen from the outside through the exhaust pipe, and then the nitrogen is introduced into the heat-resistant airbag 4322 through the connecting pipe 452, the three-way valve 453, the injection pipe 454, the conduit 4314, the ventilation ring 4313, the connecting groove 4315, the inside of the stirring frame 4312, the ventilation block 4321, and the heat-resistant airbag 4322 is expanded and drives the movable ring 4323 to move down along the stirring frame 4312. After the heat-resistant airbag 4322 expands to a suitable volume, the air supply pump 451 and the third valve are closed. After the appropriate amount of spandex waste yarn is introduced, the second motor 4331 is closed;

[0051] Step 2: Start the cylinder 4336, which drives the cross shaft 4334, the stopper 4361, the auger 4362, and the piston block 4363 to move downward through the connecting block 4335. After the piston block 4363 is inserted into the connecting groove 4315, the feed pipe 435 is sealed, and the cylinder 4336 is closed to seal the bottom of the cylinder 4311. After the spandex waste is introduced, the kettle 2 is preheated by the heating rod in the interlayer of the kettle 2, and the preheated kettle 2 is used to dry the spandex waste. The vacuum pump 441, the condenser 442, the first valve 443, and the first motor 41 are turned on. The first motor 41 drives the cylinder 4311 and the stirring frame 4312 to rotate through the bevel gear assembly 42. The rotating stirring frame 4312 breaks up the spandex waste to accelerate drying.

[0052] Step 3: The vacuum pump 441 performs vacuum treatment on the kettle body 2 through the condenser 442, the first valve 443, and the filter shell 444, wherein the condenser 442 performs liquefaction treatment on the water vapor in the vacuum treatment. After the vacuum treatment in the kettle body 2 is completed, the vacuum pump 441 and the first valve 443 are closed, the three-way valve 453 is switched, and the third valve and the air supply pump 451 are opened. At this time, the air supply pump 451 extracts nitrogen and injects it into the kettle body 2 through the branch pipe 455 and the jet ring 456 to provide a nitrogen environment for the kettle body 2. When the air pressure in the kettle body 2 is relatively high, the nitrogen pushes up the movable ring 4323, and part of the nitrogen in the heat-resistant air bag 4322 is introduced into the kettle body 2 through the safety valve 4324, and the second valve 462 and the liquid pump 461 are opened. , the liquid pump 461 injects the solvent, prepolymer solution, chain extender solution and antioxidant solution into the kettle body 2 through the liquid pumping pipe, continuously supplies power to the heating rod to heat the kettle body 2, and the rotating stirring frame 4312 heats and stirs the spandex waste silk solution mixture to prepare a spandex spinning stock solution; after the spandex spinning stock solution is prepared, the spinneret 3 and the fourth valve at the bottom of the kettle body 2 are opened, and the spandex spinning stock solution is introduced into the spinneret 3, and the spinneret 3 air-spins the spandex spinning stock solution and guides the spinning out through the discharge port, thereby realizing the operation steps of regenerating spandex silk from spandex polymer waste liquid, wherein the spinneret 3, the vacuum pump 441 and the condenser 442 are all prior arts, and their internal specific structures and working principles are not described in detail here.

[0053] At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art. In step three, during the vacuum pump 441 evacuates the kettle body 2, the filter screen in the filter shell 444 filters the large particles of impurities in the gas, and when the rotating stirring frame 4312 passes through the filter shell 444, the surface of the filter screen is scraped to avoid clogging.

[0054] 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.

[0055] 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 production device for regenerating spandex yarn from spandex polymerization waste liquid, comprising a base, characterized in that: The upper end of the base is connected to a kettle body, and the base is connected to a preparation part for preparing spandex waste yarn regenerated from spandex polymer solution, and the preparation part includes: A spinning device, installed at the bottom of the attached kettle body, is used for the spinning treatment of spandex polymer solution; A processing part is arranged on the kettle body for assisting in processing spandex waste yarn, the processing part comprises a first motor installed on the right side of the top of the kettle body, a bevel gear assembly is connected to the left output end of the first motor, an adjusting part driven by the bevel gear assembly is connected to the upper end of the kettle body, the adjusting part comprises a stirring frame rotatably connected to the upper end of the kettle body, the stirring frame comprises a cylinder driven by the bevel gear assembly, a stirring frame is installed on the edge of the cylinder body, a ventilation ring rotatably connected to the top of the cylinder body is installed on the upper end of the outer side of the kettle body, a conduit is installed on the upper left end of the ventilation ring, and the upper clamp of the cylinder body is provided. The layer is provided with a connecting groove connected with the ventilation ring, the bottom of the cylinder is provided with a feeding trough, the upper side of the stirring frame is provided with an air bag assembly for adjusting the space in the kettle body, the top outside the kettle body is connected with a driving part, the kettle body is provided with a casing near the driving part end, a feeding pipe is obliquely arranged on the right side of the casing, a conveying part for conveying spandex waste yarn is arranged in the middle part of the cylinder body, a vacuum pumping part for vacuuming the kettle body is arranged on the right side of the base, a gas supply part for supplying nitrogen in the kettle body is arranged on the left side of the base, and a liquid supply part for introducing solution into the kettle body is arranged on the rear side of the base.

2. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 1, characterized in that: The output end of the first motor is coaxially fixedly connected to the driving bevel gear in the bevel gear assembly, the driven bevel gear in the bevel gear assembly is coaxially fixedly connected to the cylinder, the stirring frame is in contact with the inner wall of the kettle body, and the inner wall interlayer of the kettle body is provided with a heating rod electrically connected to an external controller.

3. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 2, characterized in that: The airbag assembly includes three groups of ventilation blocks installed on the upper side of the stirring frame, a heat-resistant airbag is installed at the lower end of the ventilation block, the heat-resistant airbag is an annular airbag, a movable ring slidably connected to the stirring frame is installed at the bottom of the heat-resistant airbag, a safety valve is installed near the heat-resistant airbag of the movable ring, and a ventilation groove with an embedded ventilation filter plate is provided on the lower side of the movable ring near the safety valve.

4. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 3, characterized in that: The driving member includes a second motor installed at the upper end of the outer side of the kettle body, and the upper output end of the second motor is connected to a gear assembly. The driven gear in the gear assembly is coaxially fixedly connected to a sleeve rotatably connected to the casing, and a cross shaft is vertically slidably connected in the sleeve. The bottom of the cross shaft is connected to the conveying member and the top is rotatably connected to a connecting block. A cylinder for adjusting the height of the connecting block is vertically arranged on the top of the outer side of the kettle body.

5. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 4, characterized in that: The driving gear in the gear assembly is coaxially fixedly connected to the output end of the second motor, a cross groove is vertically penetrated in the sleeve and is slidably connected to the cross shaft, the output end at the bottom of the cylinder is fixedly connected to the connecting block, the top of the cross shaft is provided with a convex ring rotatably connected to the connecting block, the conveying member includes a stopper fixedly connected to the bottom of the cross shaft, the bottom of the stopper is coaxially fixedly connected to an auger that fits the inner wall of the cylinder, and the bottom of the auger is coaxially fixedly connected to a piston block matching the connecting groove.

6. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 5, characterized in that: The vacuum pump comprises a vacuum pump installed on the right side of the base, a condenser is installed on the left suction end of the vacuum pump, a first valve is installed on the left side of the condenser, a filter shell fixedly connected to the kettle body and with a built-in filter screen is installed on the left side of the first valve, and an adsorption cylinder with a built-in activated carbon screen is installed on the exhaust end of the vacuum pump.

7. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 6, characterized in that: The air supply component includes an air supply pump installed on the left side of the base for extracting nitrogen, a connecting pipe is installed at the exhaust end of the air supply pump, a three-way valve is arranged on the right side of the connecting pipe, an injection pipe fixedly connected to the conduit is installed on the right side of the three-way valve, an injection ring is installed on the top edge of the kettle body, and a branch pipe fixedly connected to the injection ring is arranged at the bottom of the three-way valve.

8. The production equipment for regenerating spandex yarn from spandex polymerization waste liquid according to claim 7, characterized in that: The liquid supply part is installed on the liquid pump at the rear side of the base, the liquid discharge end of the liquid pump is installed with a second valve, the front side of the second valve is installed with a liquid injection tube fixedly connected to the upper end of the kettle body, and the liquid extraction end of the liquid pump is installed with a liquid extraction tube for extracting the preparation solvent.

9. A production process for regenerating spandex yarn from spandex polymerization waste liquid, characterized in that: The production equipment for regenerating spandex yarn using the spandex polymerization waste liquid according to any one of claims 1 to 8 specifically comprises the following steps: Step 1: The user starts the air supply pump and the second motor. The second motor drives the sleeve, the cross shaft, the block, the auger, and the piston block to rotate through the gear assembly, and the crushed spandex waste silk from the outside is introduced into the cylinder through the feed pipe and the casing. The auger is rotated to transport the spandex waste silk downward along the inside of the cylinder, and the crushed spandex waste silk is introduced into the bottom of the kettle body through the feed trough. The air supply pump extracts nitrogen from the outside and introduces it into the heat-resistant airbag through the connecting pipe, the three-way valve, the injection pipe, the conduit, the ventilation ring, the connecting groove, the inside of the stirring frame, the ventilation block, and the heat-resistant airbag. The heat-resistant airbag expands and drives the movable ring to move down along the stirring frame. After the heat-resistant airbag expands to a suitable volume, the air supply pump is turned off. After the appropriate amount of spandex waste silk is introduced, the second motor is turned off; Step 2: Let the cylinder drive the cross shaft, the block, the auger, and the piston block to move downward through the connecting block, so that the piston block seals the connecting groove. After the spandex waste yarn is introduced, the kettle body is preheated by the heating rod in the interlayer of the kettle body, and the spandex waste yarn is dried by the preheated kettle body. The vacuum pump, the condenser, the first valve, and the first motor are turned on. The first motor drives the cylinder body and the stirring frame to rotate through the bevel gear assembly. The rotating stirring frame breaks up the spandex waste yarn to accelerate drying. Step three: The vacuum pump evacuates the kettle body through the condenser, the first valve, and the filter shell. After the kettle body is evacuated, the vacuum pump and the first valve are closed, the three-way valve is reversed, and the air supply pump draws nitrogen and injects it into the kettle body through the branch pipe and the jet ring. The second valve and the liquid pump are opened. The liquid pump injects the solvent, prepolymer solution, chain extender solution, and antioxidant solution into the kettle body through the liquid pipe. The stirring frame that heats the kettle body and rotates is used to heat and stir the spandex waste silk solution mixture to make a spandex spinning stock solution. After the spandex spinning stock solution is prepared, the spinneret is opened to introduce the spandex spinning stock solution in the kettle body into the spinneret for air spinning.

10. The process for regenerating spandex yarn from spandex polymerization waste liquid according to claim 9, characterized in that: In the step three, when the vacuum pump evacuates the kettle, the filter screen in the filter shell filters the large particles of impurities in the gas, and when the stirring frame is rotated through the filter shell, the surface of the filter screen is scraped.

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