CN112090289A - Device and process for preparing hollow fiber membrane by spinning hollow fiber yarns - Google Patents
Device and process for preparing hollow fiber membrane by spinning hollow fiber yarns Download PDFInfo
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- CN112090289A CN112090289A CN202010969560.3A CN202010969560A CN112090289A CN 112090289 A CN112090289 A CN 112090289A CN 202010969560 A CN202010969560 A CN 202010969560A CN 112090289 A CN112090289 A CN 112090289A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/08—Hollow fibre membranes
- B01D69/087—Details relating to the spinning process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/34—Polyvinylidene fluoride
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The invention discloses a device for preparing a hollow fiber membrane by spinning hollow fiber yarns, which relates to the technical field of preparation of the hollow fiber membrane and comprises a stirrer, a filter plate, a yarn outlet box, a stirring shaft, a gel box and a charging basket. According to the invention, the wire outlet box is arranged in a matched manner, the charging basket capable of rotating at a high speed is arranged in the wire outlet box, the wire outlet hole is formed in the outer part of the charging basket, the traditional production method of the complex hollow fiber wire is abandoned, during production, the membrane-forming liquid in the wire outlet box can be sent out through the wire outlet hole by utilizing the centrifugal force generated by the high rotating speed of the wire outlet box, the drawn hollow fiber wire is stretched into a wire, meanwhile, a plurality of forming grooves are formed in the inner wall of the wire outlet box, the stretched hollow fiber wire can fall into each forming groove, the hollow fiber wire is prevented from falling, and the effective and smooth performance of the subsequent membrane-forming step is ensured.
Description
Technical Field
The invention relates to the technical field of hollow fiber membrane preparation, in particular to a device and a process for preparing a hollow fiber membrane by spinning hollow fiber yarns.
Background
The membrane structure is various, organisms have the membrane structure, non-organisms also have the membrane structure, different membrane structures have different functions, the membrane structure is a more complex structure type, and a hollow fiber membrane preparation device and a method are needed for the preparation of the hollow fiber membrane.
The prior patent (publication number: CN201220415013.1) discloses a hollow fiber membrane production device, which comprises a bracket, wherein a rotary spinning nozzle, a lower connector and an upper connector are sequentially arranged on the bracket from bottom to top; the power device is connected with the rotary spinning nozzle through the transmission device, and a rotational flow type baffle is processed in the rotary spinning nozzle and can enable the feed liquid to rotate in a rotational flow manner. The upper connector is provided with a membrane material liquid inlet, and the lower connector is provided with a membrane core liquid inlet; the upper connector and the lower connector are sealed through sealing rings, and the sealing rings are preferably O-shaped rings; be equipped with the spinning hole on the rotary jet, rotary jet and lower connector, the support junction is equipped with swivel bearing, be equipped with the tetrafluoro bush between lower connector and rotary jet, the device is rotatory through rotary jet, it is rotatory to drive the spinning hole, increase the lateral flow power of casting solution, the levelling effect through the lateral flow power of casting solution, the membrane wall thickness homogeneity of hollow fiber membrane has been improved, the lateral flow power through the casting solution acts on, the polymer is at horizontal orientation in the casting solution has been improved, the transverse strength of membrane has been improved, the rotational speed of accessible adjusting rotary device makes it match with spinning traction speed, can effectively reach production speed and product quality stability, and is easy and simple to handle, high efficiency, there are following problems in the in-process discovery prior art that realizes this scheme, do not obtain good solution: 1. the filter structure which is easy to disassemble is not installed in the device, so that the raw material liquid cannot be filtered in the hollow fiber membrane preparation process, and the quality of the mixed raw material cannot be ensured; 2. the hollow fiber membrane preparation method adopted by the device can not rapidly cool the raw materials, so that the hollow fiber membrane preparation effect is poor, and certain improvement is needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: the filter structure which is easy to disassemble is not installed in the device, so that the raw material liquid cannot be filtered in the hollow fiber membrane preparation process, and the quality of the mixed raw material cannot be ensured; the hollow fiber membrane preparation method adopted by the device cannot rapidly cool the raw materials, so that the hollow fiber membrane preparation effect is poor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for preparing a hollow fiber membrane by spinning a hollow fiber yarn comprises a stirrer, a filter plate, a yarn outlet box, a stirring shaft, a gel box and a charging basket, wherein the stirrer is fixedly arranged on a base, the yarn outlet box is fixedly arranged on the base through an underframe, the stirrer is connected with the yarn outlet box through a guide pipe, a material pump is fixedly arranged on the guide pipe, the top of the yarn outlet box is fixedly provided with a top shell, an eddy current refrigerator is fixedly arranged in the top shell, the top of the stirrer is fixedly provided with a first driving motor, one end of an output shaft of the first driving motor is fixedly provided with a rotating shaft, one end of the rotating shaft penetrates through and extends to the inner part of the stirrer, the outer part of the rotating shaft is sleeved with a bearing, the outer part of the stirring shaft is fixedly provided with stirring blades, an electric heating pipe is fixedly arranged in a side shell cavity of the stirrer, and a, the filter plate is slidably mounted on the mounting slide rail through mounting guide grooves formed in the outer walls of the two sides of the filter plate, a fixing mechanism is fixedly mounted on the side wall of the stirrer, and a discharge hole is formed in the stirrer;
go out wire case's chassis on through fixed side bearer fixed mounting have second driving motor, second driving motor's output shaft one end fixed mounting has the pivot, and pivot one end is passed and is extended to the inside fixed mounting who goes out the wire case and have the storage bucket, the silk hole has been seted up to the outside of storage bucket, it has seted up the shaping groove on the inner wall of wire case to go out, fixed mounting has the gel case on the rear side outer wall of wire case, the position department fixed mounting who is close to the gel case on the inner wall of wire case has the gel shower nozzle.
Furthermore, a pull groove is formed in the filter plate, and a plurality of filter holes are formed in the filter plate.
Furthermore, the fixing mechanism is composed of a fixing shaft, a thread sleeve and a mounting side shaft, the mounting side shaft is fixedly mounted on the outer wall of one side of the thread sleeve, the fixing shaft is rotatably mounted in the thread sleeve through threads arranged outside the fixing shaft, a rotating ring is fixedly mounted at one end of the fixing shaft, and the other end of the fixing shaft is clamped and embedded in a connecting hole formed in the bottom of the filter plate.
Furthermore, an installation inner groove is formed in the stirring blade, a connecting spring is fixedly installed in the installation inner groove, a brush plate is fixedly installed at one end of the connecting spring, a cleaning scraper blade is fixedly installed on the brush plate, and one side of the cleaning scraper blade is located on the outer side of the stirring blade and is in contact with and extruded with the inner wall of the stirring machine.
Furthermore, one end of the material guide pipe penetrates through the top of the wire outlet box and extends to the position right above the charging basket, and the other end of the material guide pipe is connected with the material outlet.
Furthermore, the charging bucket is rotatably connected with a bottom supporting shaft fixedly arranged on the inner wall of the bottom surface of the wire outlet box through a bottom rotating groove formed in the bottom of the charging bucket.
The invention also provides a process for preparing the hollow fiber membrane by spinning the hollow fiber yarns, which comprises the following steps:
s1, taking a certain amount of polyvinylidene fluoride raw material, polymethyl methacrylate resin, polyacrylonitrile resin, polypropylene resin and polyvinyl chloride resin, stirring, and adding into a stirrer through a feed inlet;
s2, adding the solvent, the polymer pore-forming agent and the hydrophilic thickener into a stirrer, starting a first driving motor to drive a stirring shaft and stirring blades to rotate, stirring the mixture, starting an electric heating tube to heat the mixture to a certain temperature, stirring for a period of time, and scraping the inner wall of the stirrer by a cleaning scraper while stirring to avoid hanging of the raw materials;
s3, filtering the stirring material through a filter plate, then dropping the filtering material to the bottom of the stirrer, defoaming the mixture to form a film-making material, starting a material pump, and pumping the defoamed film-making material into a material barrel in a filament outlet box through a material guide pipe by the material pump;
s4, starting a second driving motor at the moment, driving the charging basket to rotate by the second driving motor through a rotating shaft, adjusting the rotating speed of the second driving motor, and controlling the rotating speed of the charging basket;
s5, the film-making material in the charging basket moves outwards due to the centrifugal force generated by the rotation of the charging basket, is sent out through a yarn outlet hole outside the charging basket, and is stretched into yarn;
s6, the stretched film fiber yarns are adhered to the forming grooves in the inner wall of the yarn outlet box, and a large number of film fiber yarns are intertwined to form a film shape after working for a period of time;
s7, starting a vortex refrigerator at the moment, refrigerating by the vortex refrigerator, sending cold air into the filament discharging box through the cold air port, and rapidly cooling the interlaced film-shaped object;
s8, opening a gel spray head, spraying out the gel in the gel box by the gel spray head, attaching the gel to the membrane, reducing the fluidity of the surface of the membrane, and forming the hollow fiber membrane;
s9, periodically rotating the fixed shaft to make the fixed shaft fall and separate from the connecting hole in the filter plate, pulling out the filter plate through the pull groove, effectively cleaning the filter plate, and reinstalling the filter plate after cleaning.
Further, in S1, the addition ratio of the polyvinylidene fluoride raw material, the polymethyl methacrylate resin, the polyacrylonitrile resin, the polypropylene resin, and the polyvinyl chloride resin is 80: 25: 5:10: 15.
further, in the step S2, the mixture is heated to 50-60 ℃ and stirred for 1-2 h.
Further, in S4, the rotation speed of the second driving motor is adjusted to 600-800r/min, and in S8, the gel is a mixed material of agar and water.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the wire outlet box is arranged in a matched manner, the charging basket capable of rotating at a high speed is arranged in the wire outlet box, the wire outlet hole is formed in the outer part of the charging basket, the traditional production method of the complex hollow fiber wire is abandoned, during production, the membrane-forming liquid in the wire outlet box can be sent out through the wire outlet hole by utilizing the centrifugal force generated by the high rotating speed of the wire outlet box, the drawn hollow fiber wire is stretched into a wire, meanwhile, a plurality of forming grooves are formed in the inner wall of the wire outlet box, the stretched hollow fiber wire can fall into each forming groove, the hollow fiber wire is prevented from falling, and the effective and smooth performance of the subsequent membrane-forming step is ensured.
(2) According to the invention, the vortex refrigerator is arranged outside the filament outlet box, the vortex refrigerator can be directly started during the filament making process, the vortex refrigerator is used for refrigerating, cold air is sent into the filament outlet box through the cold air port, the interlaced membrane-shaped object is rapidly cooled, the rapidity of hollow fiber filament forming is improved, meanwhile, the gel box is arranged outside the filament outlet box, when the hollow fiber filament is made, the gel spray head is opened, the gel spray head sprays out gel in the gel box, the gel is attached to the membrane-shaped object, the fluidity of the surface of the membrane-shaped object can be effectively reduced, and thus the forming effect and efficiency of the hollow fiber filament are further improved.
(3) According to the invention, the stirring blades are arranged in the stirring device, the stirring blades can stir raw materials, meanwhile, the scraping plates are arranged outside the stirring blades, the scraping plates can scrape the inner wall of the stirrer when the stirring blades rotate, the hanging of the inner wall is avoided, meanwhile, the filter plates convenient to disassemble are arranged in the device, when the filter plates work, the stirring raw materials can be effectively filtered, the quality of the stirred raw materials is ensured, and meanwhile, when the filter plates need to be cleaned, the filter plates can be directly disassembled for quick cleaning.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of the present invention;
FIG. 2 is a side elevational view, partially in cross-section, of a blender according to the present invention;
FIG. 3 is an enlarged perspective view of the filter plate of the present invention;
FIG. 4 is an enlarged perspective view of the securing mechanism of the present invention;
FIG. 5 is a rear view of the filament outlet box of the present invention;
FIG. 6 is a schematic view of the internal structure of the filament discharging box according to the present invention;
FIG. 7 is a schematic perspective view of the charging barrel according to the present invention;
FIG. 8 is a schematic view of a partial structure of the inner wall of the filament discharging box according to the present invention;
FIG. 9 is an enlarged view of the structure at A in the present invention;
fig. 10 is an enlarged schematic view of the structure at B in the present invention.
The list of components represented by the various reference numbers in the figures is as follows: 1. a blender; 2. a first drive motor; 3. a base; 4. a filter plate; 5. a fixing mechanism; 51. a fixed shaft; 52. a threaded sleeve; 53. rotating the ring; 54. installing a side shaft; 6. a material guide pipe; 7. a material pump; 8. a second drive motor; 9. a wire discharging box; 10. a top shell; 11. a stirring blade; 12. a stirring shaft; 13. a cleaning blade; 14. an electric heating tube; 15. installing a slide rail; 16. a discharge port; 17. groove drawing; 18. filtering holes; 19. installing a guide groove; 20. a gel box; 21. a fixed side frame; 22. a charging bucket; 23. a vortex refrigerator; 24. a gel nozzle; 25. a rotating shaft; 26. a bottom support shaft; 27. a filament outlet hole; 28. a bottom rotating groove; 29. forming a groove; 30. brushing the board; 31. an inner slide rail; 32. installing an inner groove; 33. a connecting spring; 34. and connecting the holes.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-10, a device for preparing a hollow fiber membrane by hollow fiber spinning comprises a stirrer 1, a filter plate 4, a filament outlet box 9, a stirring shaft 12, a gel box 20 and a charging basket 22, wherein the stirrer 1 is fixedly mounted on a base 3, the filament outlet box 9 is fixedly mounted on the base 3 through an underframe, the stirrer 1 is connected with the filament outlet box 9 through a material guide pipe 6, a material pump 7 is fixedly mounted on the material guide pipe 6, a top shell 10 is fixedly mounted at the top of the filament outlet box 9, an eddy current refrigerator 23 is fixedly mounted in the top shell 10, a first driving motor 2 is fixedly mounted at the top of the stirrer 1, a rotating shaft is fixedly mounted at one end of an output shaft of the first driving motor 2, one end of the rotating shaft penetrates through and extends to the inside of the stirrer 1, the stirring shaft 12 is fixedly mounted at the inside of the stirrer 1, a bearing is sleeved outside the rotating shaft, a, an electric heating tube 14 is fixedly installed in a side shell cavity of the stirring machine 1, an installation slide rail 15 is fixedly installed on the inner wall of the stirring machine 1, the filter plate 4 is slidably installed on the installation slide rail 15 through installation guide grooves 19 formed in the outer walls of the two sides of the filter plate 4, a fixing mechanism 5 is fixedly installed on the side wall of the stirring machine 1, a discharge hole 16 is formed in the stirring machine 1, a pull groove 17 is formed in the filter plate 4, a plurality of filter holes 18 are formed in the filter plate 4, the filter plate 4 can be pulled out through the pull groove 17 by forming the pull groove 17, a good filtering effect is achieved by forming the plurality of filter holes 18, the fixing mechanism 5 comprises a fixing shaft 51, a threaded sleeve 52 and an installation side shaft 54, the installation side shaft 54 is fixedly installed on the outer wall of one side of the threaded sleeve 52, and the fixing shaft 51 is rotatably installed in the, one end of the fixed shaft 51 is fixedly provided with a rotating ring 53, the other end of the fixed shaft 51 is clamped and embedded into a connecting hole 34 formed in the bottom of the filter plate 4, the fixed shaft 51 is periodically rotated to enable the fixed shaft 51 to descend and be separated from the connecting hole 34 in the filter plate 4, the filter plate 4 is pulled out through the pull groove 17 at the moment, effective cleaning treatment is carried out on the filter plate 4, and after cleaning, the filter plate 4 is remounted;
a second driving motor 8 is fixedly arranged on the chassis of the silk outlet box 9 through a fixed side frame 21, one end of an output shaft of the second driving motor 8 is fixedly provided with a rotating shaft, one end of the rotating shaft penetrates through and extends to the inside of the silk outlet box 9 and is fixedly provided with a charging basket 22, the outside of the charging basket 22 is provided with a silk outlet hole 27, the inner wall of the silk outlet box 9 is provided with a forming groove 29, the outer wall of the rear side of the silk outlet box 9 is fixedly provided with a gel box 20, the inner wall of the silk outlet box 9 is fixedly provided with a gel nozzle 24 at a position close to the gel box 20, the inside of the stirring blade 11 is provided with an inner installation groove 32, the inside of the inner installation groove 32 is fixedly provided with a connecting spring 33, one end of the connecting spring 33 is fixedly provided with a brush plate 30, the brush plate 30 is fixedly provided with a cleaning scraper 13, one side of the cleaning scraper 13 is positioned at the outer side of the stirring, starting a first driving motor 2 to drive a stirring shaft 12 and stirring blades 11 to rotate, stirring the mixture, starting an electric heating tube 14 to heat the mixture to a certain temperature, stirring for a period of time, scraping the inner wall of a stirrer 1 by a cleaning scraper 13 while stirring to avoid hanging the raw materials, penetrating one end of a material guide pipe 6 through the top of a filament outlet box 9 to extend to the position right above a material barrel 22, connecting the other end of the material guide pipe 6 with a discharge port 16, filtering the stirred material by a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixture to form a film-making material, starting a material pump 7, pumping the defoamed film-making material into the material barrel 22 in the filament outlet box 9 through the material guide pipe 6 by the material barrel 7, and rotatably connecting the material barrel 22 with a bottom rotating groove 28 formed at the bottom thereof and a bottom supporting shaft 26 fixedly installed on the inner wall of the bottom surface of the filament outlet box 9, the material barrel 22 is rotatably connected with a bottom supporting shaft 26 fixedly arranged on the inner wall of the bottom surface of the silk outlet box 9 through a bottom rotating groove 28 arranged at the bottom of the material barrel 22, so that the stability of the material barrel 22 during rotation is ensured, and the friction of the material barrel 22 during rotation is also reduced.
The invention also provides a process for preparing the hollow fiber membrane by spinning the hollow fiber yarns, which comprises the following steps:
s1, taking a certain amount of polyvinylidene fluoride raw material, polymethyl methacrylate resin, polyacrylonitrile resin, polypropylene resin and polyvinyl chloride resin, stirring, and adding into the stirrer 1 through a charging hole, wherein the adding amount ratio is 80: 25: 5:10: 15;
s2, adding the solvent, the polymer pore-forming agent and the hydrophilic thickener into the stirrer 1, starting the first driving motor 2 to drive the stirring shaft 12 and the stirring blades 11 to rotate, stirring the mixture at the moment, starting the electric heating tube 14, heating the mixture at 50 ℃, stirring for 2 hours, and scraping the inner wall of the stirrer 1 by the cleaning scraper 13 while stirring to avoid hanging of the raw materials;
s3, filtering the stirred material through a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixed material to form a film-making material, starting a material pump 7, and pumping the defoamed film-making material into a material barrel 22 in a filament outlet box 9 through a material guide pipe 6 by the material pump 7;
s4, starting the second driving motor 8 at the moment, driving the charging basket 22 to rotate by the second driving motor 8 through the rotating shaft 25, adjusting the rotating speed of the second driving motor 8 to 600r/min, and controlling the rotating speed of the charging basket 22;
s5, the film-making material in the charging basket 22 moves outwards due to the centrifugal force generated by the rotation of the charging basket 22, is sent out through the yarn outlet hole 27 outside the charging basket 22, and is stretched into yarn;
s6, the stretched film fiber yarns are adhered to the forming groove 29 on the inner wall of the yarn outlet box 9, and a large number of film fiber yarns are intertwined to form a film shape after working for a period of time;
s7, starting the vortex refrigerator 23 at the moment, refrigerating the vortex refrigerator 23, sending cold air into the filament outlet box 9 through a cold air port, and rapidly cooling the interlaced film-shaped object;
s8, opening the gel spray head 24, spraying the mixed gel of the agar and the water in the gel box 20 by the gel spray head 24, attaching the gel to the membrane-shaped object, reducing the fluidity of the surface of the membrane-shaped object, and forming the hollow fiber membrane;
s9, the fixed shaft 51 is periodically rotated to drop the fixed shaft 51 out of the connection hole 34 in the filter plate 4, and at this time, the filter plate 4 is pulled out through the pull groove 17 to effectively clean the filter plate 4, and after cleaning, the filter plate 4 is remounted.
Example 2
Referring to fig. 1-10, a device for preparing a hollow fiber membrane by hollow fiber spinning comprises a stirrer 1, a filter plate 4, a filament outlet box 9, a stirring shaft 12, a gel box 20 and a charging basket 22, wherein the stirrer 1 is fixedly mounted on a base 3, the filament outlet box 9 is fixedly mounted on the base 3 through an underframe, the stirrer 1 is connected with the filament outlet box 9 through a material guide pipe 6, a material pump 7 is fixedly mounted on the material guide pipe 6, a top shell 10 is fixedly mounted at the top of the filament outlet box 9, an eddy current refrigerator 23 is fixedly mounted in the top shell 10, a first driving motor 2 is fixedly mounted at the top of the stirrer 1, a rotating shaft is fixedly mounted at one end of an output shaft of the first driving motor 2, one end of the rotating shaft penetrates through and extends to the inside of the stirrer 1, the stirring shaft 12 is fixedly mounted at the inside of the stirrer 1, a bearing is sleeved outside the rotating shaft, a, an electric heating tube 14 is fixedly installed in a side shell cavity of the stirring machine 1, an installation slide rail 15 is fixedly installed on the inner wall of the stirring machine 1, the filter plate 4 is slidably installed on the installation slide rail 15 through installation guide grooves 19 formed in the outer walls of the two sides of the filter plate 4, a fixing mechanism 5 is fixedly installed on the side wall of the stirring machine 1, a discharge hole 16 is formed in the stirring machine 1, a pull groove 17 is formed in the filter plate 4, a plurality of filter holes 18 are formed in the filter plate 4, the filter plate 4 can be pulled out through the pull groove 17 by forming the pull groove 17, a good filtering effect is achieved by forming the plurality of filter holes 18, the fixing mechanism 5 comprises a fixing shaft 51, a threaded sleeve 52 and an installation side shaft 54, the installation side shaft 54 is fixedly installed on the outer wall of one side of the threaded sleeve 52, and the fixing shaft 51 is rotatably installed in the, one end of the fixed shaft 51 is fixedly provided with a rotating ring 53, the other end of the fixed shaft 51 is clamped and embedded into a connecting hole 34 formed in the bottom of the filter plate 4, the fixed shaft 51 is periodically rotated to enable the fixed shaft 51 to descend and be separated from the connecting hole 34 in the filter plate 4, the filter plate 4 is pulled out through the pull groove 17 at the moment, effective cleaning treatment is carried out on the filter plate 4, and after cleaning, the filter plate 4 is remounted;
a second driving motor 8 is fixedly arranged on the chassis of the silk outlet box 9 through a fixed side frame 21, one end of an output shaft of the second driving motor 8 is fixedly provided with a rotating shaft, one end of the rotating shaft penetrates through and extends to the inside of the silk outlet box 9 and is fixedly provided with a charging basket 22, the outside of the charging basket 22 is provided with a silk outlet hole 27, the inner wall of the silk outlet box 9 is provided with a forming groove 29, the outer wall of the rear side of the silk outlet box 9 is fixedly provided with a gel box 20, the inner wall of the silk outlet box 9 is fixedly provided with a gel nozzle 24 at a position close to the gel box 20, the inside of the stirring blade 11 is provided with an inner installation groove 32, the inside of the inner installation groove 32 is fixedly provided with a connecting spring 33, one end of the connecting spring 33 is fixedly provided with a brush plate 30, the brush plate 30 is fixedly provided with a cleaning scraper 13, one side of the cleaning scraper 13 is positioned at the outer side of the stirring, starting a first driving motor 2 to drive a stirring shaft 12 and stirring blades 11 to rotate, stirring the mixture, starting an electric heating tube 14 to heat the mixture to a certain temperature, stirring for a period of time, scraping the inner wall of a stirrer 1 by a cleaning scraper 13 while stirring to avoid hanging the raw materials, penetrating one end of a material guide pipe 6 through the top of a filament outlet box 9 to extend to the position right above a material barrel 22, connecting the other end of the material guide pipe 6 with a discharge port 16, filtering the stirred material by a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixture to form a film-making material, starting a material pump 7, pumping the defoamed film-making material into the material barrel 22 in the filament outlet box 9 through the material guide pipe 6 by the material barrel 7, and rotatably connecting the material barrel 22 with a bottom rotating groove 28 formed at the bottom thereof and a bottom supporting shaft 26 fixedly installed on the inner wall of the bottom surface of the filament outlet box 9, the material barrel 22 is rotatably connected with a bottom supporting shaft 26 fixedly arranged on the inner wall of the bottom surface of the silk outlet box 9 through a bottom rotating groove 28 arranged at the bottom of the material barrel 22, so that the stability of the material barrel 22 during rotation is ensured, and the friction of the material barrel 22 during rotation is also reduced.
The invention also provides a process for preparing the hollow fiber membrane by spinning the hollow fiber yarns, which comprises the following steps:
s1, taking a certain amount of polyvinylidene fluoride raw material, polymethyl methacrylate resin, polyacrylonitrile resin, polypropylene resin and polyvinyl chloride resin, stirring, and adding into the stirrer 1 through a charging hole, wherein the adding amount ratio is 80: 25: 5:10: 15;
s2, adding the solvent, the polymer pore-forming agent and the hydrophilic thickener into the stirrer 1, starting the first driving motor 2 to drive the stirring shaft 12 and the stirring blades 11 to rotate, stirring the mixture at the moment, starting the electric heating tube 14, heating the mixture to 55 ℃, stirring for 1.5 hours, and scraping the inner wall of the stirrer 1 by the cleaning scraper 13 while stirring to avoid hanging the raw materials;
s3, filtering the stirred material through a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixed material to form a film-making material, starting a material pump 7, and pumping the defoamed film-making material into a material barrel 22 in a filament outlet box 9 through a material guide pipe 6 by the material pump 7;
s4, starting the second driving motor 8 at the moment, driving the charging basket 22 to rotate by the second driving motor 8 through the rotating shaft 25, adjusting the rotating speed of the second driving motor 8 to 700r/min, and controlling the rotating speed of the charging basket 22;
s5, the film-making material in the charging basket 22 moves outwards due to the centrifugal force generated by the rotation of the charging basket 22, is sent out through the yarn outlet hole 27 outside the charging basket 22, and is stretched into yarn;
s6, the stretched film fiber yarns are adhered to the forming groove 29 on the inner wall of the yarn outlet box 9, and a large number of film fiber yarns are intertwined to form a film shape after working for a period of time;
s7, starting the vortex refrigerator 23 at the moment, refrigerating the vortex refrigerator 23, sending cold air into the filament outlet box 9 through a cold air port, and rapidly cooling the interlaced film-shaped object;
s8, opening the gel spray head 24, spraying the mixed gel of the agar and the water in the gel box 20 by the gel spray head 24, attaching the gel to the membrane-shaped object, reducing the fluidity of the surface of the membrane-shaped object, and forming the hollow fiber membrane;
s9, the fixed shaft 51 is periodically rotated to drop the fixed shaft 51 out of the connection hole 34 in the filter plate 4, and at this time, the filter plate 4 is pulled out through the pull groove 17 to effectively clean the filter plate 4, and after cleaning, the filter plate 4 is remounted.
Example 3
Referring to fig. 1-10, a device for preparing a hollow fiber membrane by hollow fiber spinning comprises a stirrer 1, a filter plate 4, a filament outlet box 9, a stirring shaft 12, a gel box 20 and a charging basket 22, wherein the stirrer 1 is fixedly mounted on a base 3, the filament outlet box 9 is fixedly mounted on the base 3 through an underframe, the stirrer 1 is connected with the filament outlet box 9 through a material guide pipe 6, a material pump 7 is fixedly mounted on the material guide pipe 6, a top shell 10 is fixedly mounted at the top of the filament outlet box 9, an eddy current refrigerator 23 is fixedly mounted in the top shell 10, a first driving motor 2 is fixedly mounted at the top of the stirrer 1, a rotating shaft is fixedly mounted at one end of an output shaft of the first driving motor 2, one end of the rotating shaft penetrates through and extends to the inside of the stirrer 1, the stirring shaft 12 is fixedly mounted at the inside of the stirrer 1, a bearing is sleeved outside the rotating shaft, a, an electric heating tube 14 is fixedly installed in a side shell cavity of the stirring machine 1, an installation slide rail 15 is fixedly installed on the inner wall of the stirring machine 1, the filter plate 4 is slidably installed on the installation slide rail 15 through installation guide grooves 19 formed in the outer walls of the two sides of the filter plate 4, a fixing mechanism 5 is fixedly installed on the side wall of the stirring machine 1, a discharge hole 16 is formed in the stirring machine 1, a pull groove 17 is formed in the filter plate 4, a plurality of filter holes 18 are formed in the filter plate 4, the filter plate 4 can be pulled out through the pull groove 17 by forming the pull groove 17, a good filtering effect is achieved by forming the plurality of filter holes 18, the fixing mechanism 5 comprises a fixing shaft 51, a threaded sleeve 52 and an installation side shaft 54, the installation side shaft 54 is fixedly installed on the outer wall of one side of the threaded sleeve 52, and the fixing shaft 51 is rotatably installed in the, one end of the fixed shaft 51 is fixedly provided with a rotating ring 53, the other end of the fixed shaft 51 is clamped and embedded into a connecting hole 34 formed in the bottom of the filter plate 4, the fixed shaft 51 is periodically rotated to enable the fixed shaft 51 to descend and be separated from the connecting hole 34 in the filter plate 4, the filter plate 4 is pulled out through the pull groove 17 at the moment, effective cleaning treatment is carried out on the filter plate 4, and after cleaning, the filter plate 4 is remounted;
a second driving motor 8 is fixedly arranged on the chassis of the silk outlet box 9 through a fixed side frame 21, one end of an output shaft of the second driving motor 8 is fixedly provided with a rotating shaft, one end of the rotating shaft penetrates through and extends to the inside of the silk outlet box 9 and is fixedly provided with a charging basket 22, the outside of the charging basket 22 is provided with a silk outlet hole 27, the inner wall of the silk outlet box 9 is provided with a forming groove 29, the outer wall of the rear side of the silk outlet box 9 is fixedly provided with a gel box 20, the inner wall of the silk outlet box 9 is fixedly provided with a gel nozzle 24 at a position close to the gel box 20, the inside of the stirring blade 11 is provided with an inner installation groove 32, the inside of the inner installation groove 32 is fixedly provided with a connecting spring 33, one end of the connecting spring 33 is fixedly provided with a brush plate 30, the brush plate 30 is fixedly provided with a cleaning scraper 13, one side of the cleaning scraper 13 is positioned at the outer side of the stirring, starting a first driving motor 2 to drive a stirring shaft 12 and stirring blades 11 to rotate, stirring the mixture, starting an electric heating tube 14 to heat the mixture to a certain temperature, stirring for a period of time, scraping the inner wall of a stirrer 1 by a cleaning scraper 13 while stirring to avoid hanging the raw materials, penetrating one end of a material guide pipe 6 through the top of a filament outlet box 9 to extend to the position right above a material barrel 22, connecting the other end of the material guide pipe 6 with a discharge port 16, filtering the stirred material by a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixture to form a film-making material, starting a material pump 7, pumping the defoamed film-making material into the material barrel 22 in the filament outlet box 9 through the material guide pipe 6 by the material barrel 7, and rotatably connecting the material barrel 22 with a bottom rotating groove 28 formed at the bottom thereof and a bottom supporting shaft 26 fixedly installed on the inner wall of the bottom surface of the filament outlet box 9, the material barrel 22 is rotatably connected with a bottom supporting shaft 26 fixedly arranged on the inner wall of the bottom surface of the silk outlet box 9 through a bottom rotating groove 28 arranged at the bottom of the material barrel 22, so that the stability of the material barrel 22 during rotation is ensured, and the friction of the material barrel 22 during rotation is also reduced.
The invention also provides a process for preparing the hollow fiber membrane by spinning the hollow fiber yarns, which comprises the following steps:
s1, taking a certain amount of polyvinylidene fluoride raw material, polymethyl methacrylate resin, polyacrylonitrile resin, polypropylene resin and polyvinyl chloride resin, stirring, and adding into the stirrer 1 through a charging hole, wherein the adding amount ratio is 80: 25: 5:10: 15;
s2, adding the solvent, the polymer pore-forming agent and the hydrophilic thickener into the stirrer 1, starting the first driving motor 2 to drive the stirring shaft 12 and the stirring blades 11 to rotate, stirring the mixture at the moment, starting the electric heating tube 14, heating the mixture at 60 ℃, stirring for 1h, and scraping the inner wall of the stirrer 1 by the cleaning scraper 13 while stirring to avoid hanging the raw materials;
s3, filtering the stirred material through a filter plate 4, then dropping the filtered stirred material to the bottom of the stirrer 1, defoaming the mixed material to form a film-making material, starting a material pump 7, and pumping the defoamed film-making material into a material barrel 22 in a filament outlet box 9 through a material guide pipe 6 by the material pump 7;
s4, starting the second driving motor 8 at the moment, driving the charging basket 22 to rotate by the second driving motor 8 through the rotating shaft 25, adjusting the rotating speed of the second driving motor 8 to 600r/min, and controlling the rotating speed of the charging basket 22;
s5, the film-making material in the charging basket 22 moves outwards due to the centrifugal force generated by the rotation of the charging basket 22, is sent out through the yarn outlet hole 27 outside the charging basket 22, and is stretched into yarn;
s6, the stretched film fiber yarns are adhered to the forming groove 29 on the inner wall of the yarn outlet box 9, and a large number of film fiber yarns are intertwined to form a film shape after working for a period of time;
s7, starting the vortex refrigerator 23 at the moment, refrigerating the vortex refrigerator 23, sending cold air into the filament outlet box 9 through a cold air port, and rapidly cooling the interlaced film-shaped object;
s8, opening the gel spray head 24, spraying the mixed gel of the agar and the water in the gel box 20 by the gel spray head 24, attaching the gel to the membrane-shaped object, reducing the fluidity of the surface of the membrane-shaped object, and forming the hollow fiber membrane;
s9, the fixed shaft 51 is periodically rotated to drop the fixed shaft 51 out of the connection hole 34 in the filter plate 4, and at this time, the filter plate 4 is pulled out through the pull groove 17 to effectively clean the filter plate 4, and after cleaning, the filter plate 4 is remounted.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The utility model provides a device of hollow fiber membrane is made in hollow fiber silk spinning, includes mixer (1), filter (4), goes out silk case (9), (mixing) shaft (12), gel case (20) and storage bucket (22), its characterized in that: the stirring machine (1) is fixedly arranged on a base (3), the wire discharging box (9) is fixedly arranged on the base (3) through an underframe, the stirring machine (1) and the wire discharging box (9) are connected through a material guide pipe (6), a material pump (7) is fixedly arranged on the material guide pipe (6), a top shell (10) is fixedly arranged at the top of the wire discharging box (9), an eddy current refrigerator (23) is fixedly arranged in the top shell (10), a first driving motor (2) is fixedly arranged at the top of the stirring machine (1), a rotating shaft is fixedly arranged at one end of an output shaft of the first driving motor (2), one end of the rotating shaft penetrates through and extends to the inner part of the stirring machine (1) and is fixedly provided with a stirring shaft (12), a bearing is sleeved outside the rotating shaft, stirring blades (11) are fixedly arranged outside the stirring shaft (12), and an electric heating pipe (14) is fixedly arranged in a side shell cavity of the stirring, the inner wall of the stirrer (1) is fixedly provided with a mounting slide rail (15), the filter plate (4) is slidably mounted on the mounting slide rail (15) through mounting guide grooves (19) formed in the outer walls of the two sides of the filter plate, the side wall of the stirrer (1) is fixedly provided with a fixing mechanism (5), and a discharge hole (16) is formed in the stirrer (1);
go out on the chassis of silk case (9) through fixed side bearer (21) fixed mounting second driving motor (8), the output shaft one end fixed mounting of second driving motor (8) has the pivot, and pivot one end is passed and is extended to the inside fixed mounting who goes out silk case (9) and have storage bucket (22), silk hole (27) have been seted up to the outside of storage bucket (22), set up on the inner wall of silk case (9) and become grooved (29), fixed mounting has gel case (20) on the rear side outer wall of silk case (9), it has gel shower nozzle (24) to go out the position department fixed mounting that is close to gel case (20) on the inner wall of silk case (9).
2. The device for spinning hollow fiber yarn into hollow fiber membrane according to claim 1, wherein the filter plate (4) is provided with a drawing groove (17), and the filter plate (4) is provided with a plurality of filter holes (18).
3. The device for spinning the hollow fiber membrane by the hollow fiber yarn as claimed in claim 1, wherein the fixing mechanism (5) is composed of a fixing shaft (51), a threaded sleeve (52) and a mounting side shaft (54), the mounting side shaft (54) is fixedly mounted on the outer wall of one side of the threaded sleeve (52), the fixing shaft (51) is rotatably mounted in the threaded sleeve (52) through threads arranged outside the fixing shaft, a rotating ring (53) is fixedly mounted at one end of the fixing shaft (51), and the other end of the fixing shaft (51) is clamped and embedded in a connecting hole (34) formed at the bottom of the filter plate (4).
4. The device for spinning the hollow fiber membrane through the hollow fiber yarns as claimed in claim 1, wherein an inner installation groove (32) is formed in the stirring blade (11), a connecting spring (33) is fixedly installed in the inner installation groove (32), a brush plate (30) is fixedly installed at one end of the connecting spring (33), a cleaning scraper (13) is fixedly installed on the brush plate (30), and one side of the cleaning scraper (13) is located on the outer side of the stirring blade (11) and is in contact with and extrudes the inner wall of the stirring machine (1).
5. The device for spinning the hollow fiber yarn into the hollow fiber membrane as claimed in claim 1, wherein one end of the material guiding pipe (6) passes through the top of the yarn outlet box (9) and extends to the position right above the charging basket (22), and the other end of the material guiding pipe (6) is connected with the material outlet (16).
6. The device for spinning the hollow fiber yarn into the hollow fiber membrane as claimed in claim 1, wherein the charging basket (22) is rotatably connected with a bottom supporting shaft (26) fixedly arranged on the inner wall of the bottom surface of the yarn outlet box (9) through a bottom rotating groove (28) arranged at the bottom of the charging basket.
7. The process for producing a hollow fiber membrane by spinning a hollow fiber yarn according to any one of claims 1 to 6, comprising the steps of:
s1, taking a certain amount of polyvinylidene fluoride raw material, polymethyl methacrylate resin, polyacrylonitrile resin, polypropylene resin and polyvinyl chloride resin, stirring, and adding into the stirrer (1) through a feed inlet;
s2, adding the solvent, the polymer pore-forming agent and the hydrophilic thickener into the stirrer (1), starting the first driving motor (2) to drive the stirring shaft (12) and the stirring blades (11) to rotate, stirring the mixture, starting the electric heating tube (14), heating the mixture to a certain temperature, stirring for a period of time, and scraping the inner wall of the stirrer (1) by the cleaning scraper (13) while stirring to avoid hanging the raw materials;
s3, filtering the stirring material through a filter plate (4), then dropping the filtering material to the bottom of the stirrer (1), defoaming the mixture to form a film-making material, starting a material pump (7), and pumping the defoamed film-making material into a material barrel (22) in a filament outlet box (9) through a material guide pipe (6) by the material pump (7);
s4, starting the second driving motor (8), driving the charging basket (22) to rotate by the second driving motor (8) through the rotating shaft (25), adjusting the rotating speed of the second driving motor (8), and controlling the rotating speed of the charging basket (22);
s5, the film-making material in the charging basket (22) moves outwards due to the centrifugal force generated by the rotation of the charging basket (22), is sent out through a yarn outlet hole (27) outside the charging basket (22), and is stretched into yarn;
s6, the stretched film fiber yarns are adhered to the forming groove (29) on the inner wall of the yarn outlet box (9), and a large number of film fiber yarns are intertwined to form a film shape after working for a period of time;
s7, starting the vortex refrigerator (23) at the moment, refrigerating the vortex refrigerator (23), sending cold air into the filament outlet box (9) through the cold air port, and rapidly cooling the interlaced film-shaped object;
s8, opening the gel spray head (24), spraying the gel in the gel box (20) by the gel spray head (24), adhering the gel to the membrane-shaped object, reducing the fluidity of the surface of the membrane-shaped object, and forming the hollow fiber membrane;
s9, periodically rotating the fixed shaft (51), making the fixed shaft (51) drop and separate from the connecting hole (34) in the filter plate (4), at this time, pulling out the filter plate (4) through the pull groove (17), effectively cleaning the filter plate (4), and after cleaning, reinstalling the filter plate (4).
8. The process of claim 7, wherein in the step S1, the addition ratio of the polyvinylidene fluoride raw material, the polymethyl methacrylate resin, the polyacrylonitrile resin, the polypropylene resin and the polyvinyl chloride resin is 80: 25: 5:10: 15.
9. the process for preparing the hollow fiber membrane through the spinning of the hollow fiber yarns as claimed in claim 7, wherein in the step S2, the mixture is heated to 50-60 ℃ and stirred for 1-2 hours.
10. The process of claim 7, wherein in S4, the rotation speed of the second driving motor (8) is adjusted to 600-800r/min, and in S8, the gel is a mixed material of agar and water.
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| CN113797764A (en) * | 2021-10-08 | 2021-12-17 | 江苏长海复合材料股份有限公司 | Production process of nylon skeleton hollow fiber membrane |
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