Hollow fiber membrane production device and method

Abstract

The invention belongs to the technical field of hollow fiber membrane production, and particularly relates to a hollow fiber membrane production device and method. The spinning groove is formed below the base; the mixing barrel is arranged above the base; a defoaming assembly; the output shaft of the second motor drives the rotating shaft to rotate, the rotating shaft drives the connected elliptical blocks and the rotating wheels to rotate, the rotating wheels drive the belt to rotate, the belt drives the other two rotating wheels to rotate, the rotating wheels drive the connected rotating shafts and the elliptical blocks to rotate, and the four elliptical blocks synchronously rotate at the bottom of the mixing barrel. Through rotation of an elliptical block and under the action of gravity of the mixing barrel, the height of the mixing barrel is changed, the mixing barrel drives a connecting plate to move, the connecting plate slides on a supporting column, the mixing barrel is limited in the vertical direction, under the action of a third spring, the mixing barrel shakes up and down, bubbles in the mixing barrel are eliminated through vibration, and the mixing effect is improved. The function of eliminating bubbles in the mixing barrel is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow fiber membrane production, in particular to a hollow fiber membrane production device and method. Background Art

[0002] Hollow fiber membrane is a fiber material with a special structure, which has a hollow channel inside and a thin film layer on the outside. Due to its unique structure, hollow fiber membrane has advantages in various application fields, such as water treatment, gas separation, drug delivery, etc. Hollow fiber membrane has the advantages of large specific surface area and hollow channel, which enables it to achieve high flux and effective separation at the same time. In addition, hollow fiber membrane can achieve selective separation and delivery of specific molecules, particles or ions by adjusting the structure and pore size of the fiber membrane. Therefore, hollow fiber membrane is widely used in water treatment, food and beverage industry, pharmaceutical, biomedicine and other fields.

[0003] A Chinese patent with publication number CN102764593B discloses a hollow fiber membrane production device, including a bracket, on which a spinneret, a lower connector, and an upper connector are arranged in sequence from bottom to top, the upper connector is provided with a membrane liquid inlet, and the lower connector is provided with a membrane core liquid inlet; the upper connector and the lower connector are sealed by a sealing ring, and the spinneret is provided with a spinning hole, characterized in that: the spinneret is a rotary spinneret, and a rotary bearing is provided at the connection between the rotary spinneret and the lower connector and the bracket, and also includes a power device and a transmission device, the power device is arranged on the bracket, and is connected to the rotary spinneret through the transmission device. The present invention also includes a method for preparing a hollow fiber membrane using the above-mentioned production method. The hollow fiber membrane production device described in the present invention can be used for the production of hollow fiber membranes by immersion precipitation phase transformation method or thermally induced phase separation method, and has a simple structure and does not require manual adjustment, which greatly improves the quality and stability of the hollow fiber membrane.

[0004] In the above technology, when producing hollow fiber ultrafiltration membranes, the raw materials need to be stirred to form a membrane-making liquid. However, due to the stirring factor, the membrane-making liquid contains a large number of bubbles. In addition to bubbles, it also contains some impurities. Both bubbles and impurities will affect the quality of the membrane fibers produced later, so defoaming treatment is required.

[0005] To this end, the present invention provides a hollow fiber membrane production device and method. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a hollow fiber membrane production device described in the present invention comprises:

[0008] Base;

[0009] A spinneret is arranged below the base;

[0010] A mixing barrel, arranged above the base;

[0011] Defoaming component, used to eliminate foam in the mixing tank;

[0012] The defoaming assembly comprises four pillars fixedly connected to the top of the base; four connecting plates are fixedly connected to the outer wall of the mixing barrel in a circumferential arrangement, and the connecting plates are slidably connected to the pillars respectively; the outer sides of the pillars are sleeved with third springs, and the two ends of the third springs are respectively fixedly connected to the base and the connecting plates; four fixing plates are fixedly connected to the top of the base; two elliptical blocks are rotatably connected between two opposite fixing plates through a rotating shaft; two rotating wheels are fixedly connected to both ends of the rotating shaft, and a belt is sleeved between two adjacent rotating wheels; a second motor is fixedly connected to one of the fixing plates; the second motor is fixedly connected to one end of the rotating shaft;

[0013] Two stirring paddles are arranged in the mixing barrel, and a plurality of spikes are fixedly connected to the stirring paddles; a telescopic tube is connected and fixedly connected to the bottom of the mixing barrel, and the bottom of the telescopic tube is connected and fixedly connected to the base; a heating chamber is opened on the inner wall of the mixing barrel; and an air release valve is installed on the top of the mixing barrel.

[0014] Preferably, a first motor is fixedly connected to the top of the mixing barrel, an output shaft of the first motor is fixedly connected to a rotating rod, and the stirring paddles are all fixedly connected to the rotating rod; a scraper rod is fixedly connected to the bottom of the rotating rod; and the scraper rod contacts the inner wall of the mixing barrel.

[0015] Preferably, a first fixed frame is provided at one end of the spinneret; a wire release roller, a first fixed roller and two first guide rollers are rotatably connected to the first fixed frame in sequence through bearings; the midlines of the two first guide rollers are arranged on the same straight line; an adjusting roller is provided above the first fixed roller; first sliding bars are fixedly connected to both ends of the first fixed frame; a first slider is slidably connected to the first slider; both ends of the adjusting roller are rotatably connected to the first slider through bearings; a first spring is sleeved on the outer side of the first slider; the two ends of the first spring are respectively fixed to the first slider and the first fixed frame; a core wire measuring instrument is provided on the first fixed roller and the adjusting roller.

[0016] Preferably, a second fixed frame is provided at the other end of the spinneret; a wire collecting rod and a second fixed roller are rotatably connected to the second fixed frame via a bearing; a lifting roller is provided above the second fixed roller; second sliding rods are fixedly connected to both ends of the second fixed frame; a second slider is slidably connected to the second slider; both ends of the lifting roller are rotatably connected to the second slider via bearings; a fourth spring is sleeved on the outer side of the second slider; both ends of the fourth spring are fixedly connected to the second slider and the second fixed frame respectively; and a film line measuring instrument is provided on the second fixed roller and the lifting roller.

[0017] Preferably, an adapter is installed at the bottom of the telescopic tube, and the bottom of the adapter is connected and fixedly connected with a hose; a delivery pipe is rotatably connected to the spinneret through a rotating shaft, and one end of the hose is connected and fixedly connected to one end of the delivery pipe; and a plurality of nozzles are installed on the delivery pipe.

[0018] Preferably, one end of the rotating shaft connected to the conveying pipe extends to the outside of the spinneret and is fixedly connected to a gear; the outer wall of the spinneret is fixedly connected to an electric push rod; the output end of the electric push rod is fixedly connected to a rack, and the rack is meshed with the gear; the bottom of the rack is fixedly connected to two connecting blocks; the outer wall of the spinneret is fixedly connected to two side plates, a cross bar is fixedly connected between the two side plates, and the connecting block is slidably connected to the cross bar.

[0019] Preferably, a drying tank is fixedly connected to one end of the spinneret close to the second fixed frame; a partition is provided between the drying tank and the spinneret; two second guide rollers are rotatably connected in the drying tank via bearings; a plurality of heating tubes are fixedly connected to the bottom end of the drying tank; and a fan is fixedly connected to the bottom of the drying tank.

[0020] Preferably, the bottom end of the spinneret is rotatably connected to three rollers via bearings, and tensioning rollers are fixed between the rollers; the bottoms of the tensioning rollers are fixedly connected to lifting frames via mounting seats; the bottom of the spinneret is fixedly connected to two fixed seats; the lifting frames slide on the fixed seats; the bottom of the spinneret is fixedly connected to two third motors, the output shafts of the third motors are fixedly connected to reciprocating screw rods, the top ends of the reciprocating screw rods are rotatably connected to the fixed seats via bearings, and the lifting frames are threadedly connected to the reciprocating screw rods; a shell is provided on the outside of the third motor.

[0021] Preferably, the top of the mixing barrel is connected and fixedly connected to a feed hopper, and a control valve is installed on the feed hopper; a filter cartridge is connected to the inner wall of the top of the mixing barrel by bolts; the filter cartridge is arranged below the feed hopper; a second spring is fixedly connected to the bottom of the filter cartridge; a filter plate is fixedly connected to the top of the second spring, and the filter plate slides on the inner wall of the filter cartridge.

[0022] Preferably, a method for producing a hollow fiber membrane comprises the following steps:

[0023] S1: dissolving polyvinylidene fluoride, additives and various high molecular polymers in a solvent, and stirring the mixture to form a film-forming solution;

[0024] S2: Filter the impurities in the mixed material and defoam the film-making liquid;

[0025] S3: core yarn production by spinning device;

[0026] S4: By adjusting the wire arrangement mechanism, the tension of the core wire is adjusted to better contact with the solution for film making;

[0027] S5: The membrane filaments are dried and air-dried by the drying mechanism, and then enter the winding mechanism to be wound up.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. A hollow fiber membrane production device and method described in the present invention, through the cooperation of the elliptical block, the rotating wheel and the belt, when stirring is required, the first motor is turned on, the first motor drives the rotating rod to rotate through the output shaft, and the stirring paddle box thorn block is driven to rotate through the rotating rod to achieve the function of eliminating bubbles; the rotating rod drives the scraper rod to rotate, and the scraper rod contacts the inner wall of the mixing barrel to achieve the function of easily scraping and cleaning the inner wall of the mixing barrel; it is also necessary to turn on the second motor, drive the rotating shaft to rotate through the output shaft of the second motor, drive the connected elliptical block and the rotating wheel to rotate through the rotating shaft, drive the belt to rotate through the rotating wheel, drive the other two rotating wheels to rotate through the belt, and drive the connected rotating shaft and elliptical block to rotate through the rotating wheel, and the four elliptical blocks rotate synchronously at the bottom of the mixing barrel. Through the rotation of the elliptical block and the gravity of the mixing barrel, the height of the mixing barrel changes, the mixing barrel drives the connecting plate to move, the connecting plate slides on the pillar, and the mixing barrel is limited in the vertical direction. Under the action of the third spring, the mixing barrel shakes up and down, and the bubbles in the mixing barrel are eliminated by vibration, thereby achieving the function of eliminating bubbles in the mixing barrel.

[0030] 2. A hollow fiber membrane production device and method described in the present invention cooperates with a core wire measuring instrument and a membrane wire measuring instrument; the core wire is spun through a spinning mechanism, and is paid out through a pay-off roller, and then the core wire passes through a first fixed roller and an adjusting roller, wherein both ends of the adjusting roller are fine-tuned along with the diameter of the core wire under the action of a first spring, a first slider and a first slide bar, and the adjusting roller drives the core wire measuring instrument to move together, and the core wire measuring instruments on the first fixed roller and the adjusting roller monitor the diameter of the core wire in real time; after the film is sprayed, the core wire passes between a second fixed roller and a lifting roller, wherein both ends of the lifting roller are fine-tuned along with the diameter of the membrane filament under the action of a fourth spring, a second slider and a second slide bar, and the lifting roller drives the membrane wire measuring instrument to move together, and the membrane wire measuring instruments on the second fixed roller and the membrane wire measuring instrument roller monitor the diameter of the membrane filament in real time, and compare it with the result of the core wire measuring instrument, thereby determining the wall thickness of the membrane filament and improving the quality of the membrane filament. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 is a stereogram of the present invention;

[0033] Figure 2 It is a partial stereogram of the present invention;

[0034] Figure 3 is a cross-sectional view of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the cross section of the mixing barrel in the present invention;

[0036] Figure 5 It is a structural schematic diagram of the elliptical block in the present invention;

[0037] Figure 6 It is a schematic diagram of the structure of the delivery pipe in the present invention;

[0038] Figure 7 It is a structural schematic diagram of the lifting frame in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the cross section of the filter frame in the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the first guide roller in the present invention;

[0041] Fig.10 It is a structural schematic diagram of the lifting roller in the present invention;

[0042] Fig.11 is a method flow chart of an embodiment of the present invention;

[0043] In the figure: 1, first fixed frame; 11, wire release roller; 12, adjusting roller; 13, first fixed roller; 14, first slider; 15, first slide bar; 16, first spring; 17, first guide roller; 2, base; 21, mixing barrel; 211, heating chamber; 22, feeding hopper; 23, first motor; 231, rotating rod; 232, stirring paddle; 233, thorn block; 234, scraper; 24, air release valve; 241, filter plate; 242, filter cartridge; 243, second spring; 25, pillar; 251, connecting plate; 252, third spring; 253, second motor; 254, fixed plate; 255, belt; 256, rotating wheel; 257, elliptical block; 26, Telescopic tube; 261, adapter; 262, hose; 3, spinneret; 31, delivery tube; 311, nozzle; 312, gear; 313, rack; 314, connecting block; 315, cross bar; 316, side plate; 317, electric push rod; 32, roller; 33, tensioning roller; 331, lifting frame; 332, fixed seat; 333, third motor; 334, reciprocating screw; 335, shell; 4, drying tank; 41, second guide roller; 42, heating tube; 43, fan; 5, partition; 6, second fixed frame; 61, wire collecting roller; 62, lifting roller; 63, second fixed roller; 64, second slider; 65, second slide bar; 66, fourth spring. DETAILED DESCRIPTION

[0044] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0045] like Figures 1 to 10As shown, a hollow fiber membrane production device according to an embodiment of the present invention comprises: a base 2; a spinneret 3, arranged below the base 2; a mixing barrel 21, arranged above the base 2; a defoaming assembly, used to eliminate foam in the mixing barrel 21; the defoaming assembly comprises four pillars 25 fixedly connected to the top of the base 2; four connecting plates 251 are fixedly connected to the outer wall of the mixing barrel 21 in a circumferential arrangement, and the connecting plates 251 are respectively slidably connected to the pillars 25; the outer sides of the pillars 25 are sleeved with third springs 252, and the two ends of the third springs 252 are respectively fixedly connected to the base 2 and the connecting plate 251; four fixing plates 254 are fixedly connected to the top of the base 2; the two opposite fixing plates 254 are fixedly connected to the base 2; There are two elliptical blocks 257 rotatably connected between the fixed plates 254 via a rotating shaft; two rotating wheels 256 are fixedly connected at both ends of the rotating shaft, and a belt 255 is sleeved between two adjacent rotating wheels 256; a second motor 253 is fixedly connected to one of the fixed plates 254; the second motor 253 is fixedly connected to one end of the rotating shaft; two stirring paddles 232 are arranged in the mixing barrel 21, and a plurality of spike blocks 233 are fixedly connected to the stirring paddles 232; a telescopic tube 26 is connected and fixedly connected to the bottom of the mixing barrel 21, and the bottom of the telescopic tube 26 is connected and fixedly connected to the base 2; a heating chamber 211 is provided on the inner wall of the mixing barrel 21; and a vent valve 24 is installed on the top of the mixing barrel 21.

[0046] When producing hollow fiber ultrafiltration membranes, the raw materials need to be stirred to form a membrane-making liquid. However, due to the stirring factor, the membrane-making liquid contains a large number of bubbles, in addition to bubbles, there are also some impurities. Both bubbles and impurities will affect the quality of the membrane fibers produced later, so defoaming treatment is required;

[0047] When the defoaming assembly provided by the present invention is in use, during the stirring process, the stirring paddle 232 and the thorn block 233 are driven to rotate by the rotating rod 231, and the thorn block 233 can destroy some bubbles in the solution. It is also necessary to turn on the second motor 253, and the output shaft of the second motor 253 drives the rotating shaft to rotate, and the rotating shaft drives the connected elliptical block 257 and the rotating wheel 256 to rotate, and the rotating wheel 256 drives the belt 255 to rotate, and the belt 255 drives the other two rotating wheels 256 to rotate, and the rotating wheel 256 drives the connected The rotating shaft and the elliptical block 257 rotate, and the four elliptical blocks 257 rotate synchronously at the bottom of the mixing barrel 21. The rotation of the elliptical block 257 and the gravity of the mixing barrel 21 change the height of the mixing barrel 21. The mixing barrel 21 drives the connecting plate 251 to move, and the connecting plate 251 slides on the support 25 to limit the mixing barrel 21 in the vertical direction. Under the action of the third spring 252, the mixing barrel 21 shakes up and down, and the bubbles in the mixing barrel 21 are eliminated by vibration, thereby realizing the function of eliminating the bubbles in the mixing barrel 21.

[0048] like Figure 4 As shown, a first motor 23 is fixedly connected to the top of the mixing barrel 21, a rotating rod 231 is fixedly connected to the output shaft of the first motor 23, and the stirring paddles 232 are all fixedly connected to the rotating rod 231; a scraper rod 234 is fixedly connected to the bottom of the rotating rod 231; and the scraper rod 234 contacts the inner wall of the mixing barrel 21.

[0049] The scraper rod 234 provided by the present invention is used. When stirring is required, the first motor 23 is turned on, and the first motor 23 drives the rotating rod 231 to rotate through the output shaft, and the rotating rod 231 drives the stirring paddle 232 and the thorn block 233 to rotate, thereby realizing the function of eliminating bubbles; the rotating rod 231 drives the scraper rod 234 to rotate, and the scraper rod 234 contacts the inner wall of the mixing barrel 21, thereby realizing the function of easily scraping and cleaning the inner wall of the mixing barrel 21.

[0050] like Fig. 9 As shown, a first fixed frame 1 is provided at one end of the spinneret 3; a wire unwinding roller 11, a first fixed roller 13 and two first guide rollers 17 are rotatably connected to the first fixed frame 1 in sequence through bearings; the midlines of the two first guide rollers 17 are arranged on the same straight line; an adjusting roller 12 is provided above the first fixed roller 13; first slide bars 15 are fixedly connected at both ends of the first fixed frame 1; a first slider 14 is slidably connected to the first slider 15; both ends of the adjusting roller 12 are rotatably connected to the first slider 14 through bearings; a first spring 16 is sleeved on the outer side of the first slider 15; the two ends of the first spring 16 are respectively fixedly connected to the first slider 14 and the first fixed frame 1; a core wire measuring instrument is provided on the first fixed roller 13 and the adjusting roller 12.

[0051] When the adjusting roller 12 provided by the present invention is in use, the core wire is spun through the spinning mechanism, paid out through the pay-off roller, and then the core wire passes through the first fixed roller 13 and the adjusting roller 12, wherein the two ends of the adjusting roller 12 will be fine-tuned along with the diameter of the core wire under the action of the first spring 16, the first slider 14 and the first slide rod 15, and the adjusting roller 12 drives the core wire measuring instrument to move together, and the core wire measuring instruments on the first fixed roller 13 and the adjusting roller 12 will monitor the diameter of the core wire in real time.

[0052] like Fig.10As shown, a second fixed frame 6 is provided at the other end of the spinneret 3; a wire collecting rod and a second fixed roller 63 are rotatably connected to the second fixed frame 6 through bearings; a lifting roller 62 is provided above the second fixed roller 63; second slide bars 65 are fixedly connected at both ends of the second fixed frame 6; a second slider 64 is slidably connected to the second slider 65; both ends of the lifting roller 62 are rotatably connected to the second slider 64 through bearings; a fourth spring 66 is sleeved on the outer side of the second slide bar 65; both ends of the fourth spring 66 are respectively fixedly connected to the second slider 64 and the second fixed frame 6; and film line measuring instruments are provided on the second fixed roller 63 and the lifting roller 62.

[0053] When the lifting roller 62 provided by the present invention is in use, the core wire passes through the second fixed roller 63 and the lifting roller 62 after the film is sprayed, and the two ends of the lifting roller 62 will be fine-tuned along with the diameter of the membrane wire under the action of the fourth spring 66, the second slider 64 and the second slide bar 65. The lifting roller 62 drives the film line measuring instrument to move together, and the second fixed roller 63 and the film line measuring instrument on the film line measuring instrument roller will monitor the diameter of the membrane wire in real time and compare it with the result of the core wire measuring instrument, so as to determine the wall thickness of the membrane wire and improve the quality of the membrane wire.

[0054] like Figure 5 As shown, an adapter 261 is installed at the bottom of the telescopic tube 26, and a hose 262 is connected and fixed to the bottom of the adapter 261; a delivery pipe 31 is rotatably connected to the spinneret 3 through a rotating shaft, and one end of the hose 262 is connected and fixed to one end of the delivery pipe 31; a plurality of nozzles 311 are installed on the delivery pipe 31.

[0055] When the delivery pipe 31 and the nozzle 311 provided by the present invention are in use, the mixture in the mixing barrel 21 enters the delivery pipe 31 through the telescopic tube 26, and then passes through the adapter 261 and flows from the hose 262 to the delivery pipe 31. The mixture in the delivery pipe 31 is sprayed onto the corresponding core line through the nozzle 311 to achieve the effect of film spraying.

[0056] like Figure 6 As shown, one end of the rotating shaft connected to the conveying pipe 31 extends to the outside of the spinneret 3 and is fixedly connected to a gear 312; an electric push rod 317 is fixedly connected to the outer wall of the spinneret 3; an output end of the electric push rod 317 is fixedly connected to a rack 313, and the rack 313 is meshed with the gear 312; two connecting blocks 314 are fixedly connected to the bottom of the rack 313; two side plates 316 are fixedly connected to the outer wall of the spinneret 3, a cross bar 315 is fixedly connected between the two side plates 316, and the connecting block 314 is slidably connected to the cross bar 315.

[0057] When the gear 312 and the rack 313 provided by the present invention are in use, in order to expand the range of film spraying and improve the quality of film spraying, it is necessary to turn on the electric push rod 317, push the rack 313 through the output end of the electric push rod 317, push the gear 312 to rotate through the rack 313, and drive the rotating shaft and the conveying pipe 31 to rotate through the gear 312, so that the conveying pipe 31 rotates back and forth to expand the spraying range of the film-making liquid.

[0058] like Figure 3 As shown, a drying tank 4 is fixedly connected to one end of the spinneret 3 close to the second fixed frame 6; a partition 5 is provided between the drying tank 4 and the spinneret 3; two second guide rollers 41 are rotatably connected in the drying tank 4 through bearings; a plurality of heating tubes 42 are fixedly connected to the bottom end of the drying tank 4; and a fan 43 is fixedly connected to the bottom of the drying tank 4.

[0059] When the heating tube 42 provided by the present invention is in use, the heating tube 42 is energized to generate heat, and the fan 43 is turned on to blow the heat upward, so that the heat surrounds the membrane filaments and dries them, thereby achieving the effect of drying the membrane filaments.

[0060] like Figure 3 and Figure 7 As shown, the bottom end of the spinneret 3 is rotatably connected to three rollers 32 through bearings, and tensioning rollers 33 are fixedly connected between the rollers 32; the bottoms of the tensioning rollers 33 are fixedly connected to lifting frames 331 through mounting seats; the bottom of the spinneret 3 is fixedly connected to two fixed seats 332; the lifting frames 331 slide on the fixed seats 332; the bottom of the spinneret 3 is fixedly connected to two third motors 333, the output shafts of the third motors 333 are fixedly connected to reciprocating screw rods 334, the top ends of the reciprocating screw rods 334 are rotatably connected to the fixed seats 332 through bearings, and the lifting frames 331 are threadedly connected to the reciprocating screw rods 334; a shell 335 is provided on the outer side of the third motor 333.

[0061] When the reciprocating screw rod 334 provided by the present invention is in use, the core wire in the spinneret 3 passes through the bottom of the roller 32 and the top of the tensioning roller 33 and is arranged in sequence. When the tension of the core wire needs to be adjusted, the third motor 333 needs to be turned on, and the reciprocating screw rod 334 is driven to rotate by the third motor 333, and the lifting frame 331 is driven up and down by the reciprocating screw rod 334. The lifting frame 331 slides on the fixed seat 332, and the mounting seat and the tensioning roller 33 are limited in the vertical direction, thereby changing the tension of the core wire.

[0062] like Figure 4 and Figure 8As shown, the top of the mixing barrel 21 is connected and fixedly connected to the feed hopper 22, and a control valve is installed on the feed hopper 22; a filter cartridge 242 is connected to the inner wall of the top of the mixing barrel 21 by bolts; the filter cartridge 242 is arranged below the feed hopper 22; a second spring 243 is fixedly connected to the bottom of the filter cartridge 242; a filter plate 241 is fixedly connected to the top of the second spring 243, and the filter plate 241 slides on the inner wall of the filter cartridge 242.

[0063] When the filter cartridge 242 provided by the present invention is in use, the raw materials of the mixture enter through the feed hopper 22. When the raw materials pass through the filter cartridge 242, the filter cartridge 242 filters the raw materials to prevent impurities in the raw materials from entering the mixing barrel 21. At the same time, when the raw materials enter the filter cartridge 242, they press the filter plate 241. Under the pressure of the second spring 243 and the filter plate 241, the filter plate 241 shakes back and forth up and down, and the filter plate 241 slides on the inner wall of the filter cartridge 242 to scrape off the impurities on the inner wall of the filter cartridge 242 to prevent the impurities from blocking the filter cartridge 242 and affecting the filtration.

[0064] like Fig.11 As shown, a method for producing a hollow fiber membrane comprises the following steps:

[0065] S1: dissolving polyvinylidene fluoride, additives and various high molecular polymers in a solvent, and stirring the mixture to form a film-forming solution;

[0066] S2: Filter the impurities in the mixed material and defoam the film-making liquid;

[0067] S3: core yarn production by spinning device;

[0068] S4: By adjusting the wire arrangement mechanism, the tension of the core wire is adjusted to better contact with the solution for film making;

[0069] S5: The membrane filaments are dried and air-dried by the drying mechanism, and then enter the winding mechanism to be wound up.

[0070] Working principle: The core wire is spun through the spinning mechanism, and then released through the pay-off roller. Then, the core wire passes through the first fixed roller 13 and the adjusting roller 12. The two ends of the adjusting roller 12 are fine-tuned along with the diameter of the core wire under the action of the first spring 16, the first slider 14 and the first slide bar 15. The adjusting roller 12 drives the core wire measuring instrument to move together. The core wire measuring instruments on the first fixed roller 13 and the adjusting roller 12 monitor the diameter of the core wire in real time.

[0071] When stirring is required, the first motor 23 is turned on, and the first motor 23 drives the rotating rod 231 to rotate through the output shaft, and the rotating rod 231 drives the stirring paddle 232 and the thorn block 233 to rotate to achieve the function of eliminating bubbles; the rotating rod 231 drives the scraper rod 234 to rotate, and the scraper rod 234 contacts the inner wall of the mixing barrel 21 to achieve the function of easily scraping and cleaning the inner wall of the mixing barrel 21; it is also necessary to turn on the second motor 253, and the output shaft of the second motor 253 drives the rotating shaft to rotate, and the rotating shaft drives the connected elliptical block 257 and the rotating wheel 256 to rotate, and the rotating wheel 256 drives the belt 255 to rotate, and the belt 255 drives the belt 255 to rotate. The other two rotating wheels 256 are driven to rotate, and the rotating wheels 256 drive the connected rotating shaft and the elliptical block 257 to rotate. The four elliptical blocks 257 rotate synchronously at the bottom of the mixing barrel 21. The mixing barrel 21 changes in height due to the rotation of the elliptical blocks 257 and the gravity of the mixing barrel 21. The mixing barrel 21 drives the connecting plate 251 to move. The connecting plate 251 slides on the support 25 to limit the mixing barrel 21 in the vertical direction. Under the action of the third spring 252, the mixing barrel 21 shakes up and down, and the bubbles in the mixing barrel 21 are eliminated by vibration, thereby achieving the function of eliminating the bubbles in the mixing barrel 21.

[0072] After the film is sprayed, the core wire passes between the second fixed roller 63 and the lifting roller 62. The two ends of the lifting roller 62 are fine-tuned along with the diameter of the film wire under the action of the fourth spring 66, the second slider 64 and the second slide bar 65. The lifting roller 62 drives the film wire measuring instrument to move together. The second fixed roller 63 and the film wire measuring instrument on the film wire measuring instrument roller monitor the diameter of the film wire in real time and compare it with the result of the core wire measuring instrument, so as to determine the wall thickness of the film wire and improve the quality of the film wire.

[0073] The mixed material in the mixing barrel 21 enters the delivery pipe 31 through the telescopic tube 26, and then flows from the hose 262 to the delivery pipe 31 through the adapter 261. The mixed material in the delivery pipe 31 is sprayed on the corresponding core line through the nozzle 311. In order to expand the range of film spraying and improve the quality of film spraying, it is necessary to turn on the electric push rod 317, and the output end of the electric push rod 317 pushes the rack 313, and the rack 313 drives the gear 312 to rotate, and the gear 312 drives the rotating shaft and the delivery pipe 31 to rotate, and the delivery pipe 31 rotates back and forth to expand the spraying range of the film-making liquid;

[0074] The core wire in the spinneret 3 passes through the bottom of the support roller 32 and the top of the tensioning roller 33 and is arranged in sequence. When the tension of the core wire needs to be adjusted, the third motor 333 needs to be turned on, and the reciprocating screw rod 334 is driven to rotate by the third motor 333, and the lifting frame 331 is driven up and down by the reciprocating screw rod 334. The lifting frame 331 slides on the fixed seat 332, and the mounting seat and the tensioning roller 33 are limited in the vertical direction, thereby changing the tension of the core wire.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hollow fiber membrane production device, comprising: Base (2); A spinneret (3) is arranged below the base (2); A mixing barrel (21) is arranged above the base (2); A defoaming component, used to eliminate the foam in the mixing barrel (21); The invention is characterized in that: the defoaming component comprises four pillars (25) fixedly connected to the top of the base (2); four connecting plates (251) are fixedly connected in a circumferential arrangement on the outer wall of the mixing barrel (21), and the connecting plates (251) are respectively slidably connected to the pillars (25); the outer sides of the pillars (25) are sleeved with third springs (252), and the two ends of the third springs (252) are respectively fixedly connected to the base (2) and the connecting plates (251); four fixing plates (254) are fixedly connected to the top of the base (2); two elliptical blocks (257) are rotatably connected between two opposite fixing plates (254) through a rotating shaft; two rotating wheels (256) are fixedly connected to both ends of the rotating shaft, and a belt (255) is sleeved between two adjacent rotating wheels (256); a second motor (253) is fixedly connected to one of the fixing plates (254); the second motor (253) is fixedly connected to one end of the rotating shaft; Two stirring paddles (232) are arranged in the mixing barrel (21), and a plurality of spike blocks (233) are fixedly connected to the stirring paddles (232); the bottom of the mixing barrel (21) is connected and fixedly connected to a telescopic tube (26), and the bottom of the telescopic tube (26) is connected and fixedly connected to the base (2); a heating chamber (211) is provided on the inner wall of the mixing barrel (21); and a vent valve (24) is installed on the top of the mixing barrel (21).

2. A hollow fiber membrane production device according to claim 1, characterized in that: A first motor (23) is fixedly connected to the top of the mixing barrel (21); a rotating rod (231) is fixedly connected to the output shaft of the first motor (23); and the stirring paddles (232) are all fixedly connected to the rotating rod (231); a scraping rod (234) is fixedly connected to the bottom of the rotating rod (231); and the scraping rod (234) is in contact with the inner wall of the mixing barrel (21).

3. A hollow fiber membrane production device according to claim 2, characterized in that: A first fixed frame (1) is provided at one end of the spinneret (3); a wire unwinding roller (11), a first fixed roller (13) and two first guide rollers (17) are rotatably connected to the first fixed frame (1) in sequence through bearings; the center lines of the two first guide rollers (17) are arranged on the same straight line; an adjusting roller (12) is provided above the first fixed roller (13); first sliding bars (15) are fixedly connected to both ends of the first fixed frame (1); a first slider (14) is slidably connected to the first slider (15); both ends of the adjusting roller (12) are rotatably connected to the first slider (14) through bearings; a first spring (16) is sleeved on the outer side of the first sliding bar (15); the two ends of the first spring (16) are respectively fixedly connected to the first slider (14) and the first fixed frame (1); a core wire measuring instrument is provided on the first fixed roller (13) and the adjusting roller (12).

4. A hollow fiber membrane production device according to claim 3, characterized in that: A second fixed frame (6) is provided at the other end of the spinneret (3); a wire collecting roller and a second fixed roller (63) are rotatably connected to the second fixed frame (6) via a bearing; a lifting roller (62) is provided above the second fixed roller (63); second sliding rods (65) are fixedly connected at both ends of the second fixed frame (6); a second slider (64) is slidably connected to the second slider (65); both ends of the lifting roller (62) are rotatably connected to the second slider (64) via bearings; a fourth spring (66) is sleeved on the outer side of the second sliding rod (65); both ends of the fourth spring (66) are fixedly connected to the second slider (64) and the second fixed frame (6), respectively; and a film line measuring instrument is provided on the second fixed roller (63) and the lifting roller (62).

5. A hollow fiber membrane production device according to claim 4, characterized in that: An adapter (261) is installed at the bottom of the telescopic tube (26), and a hose (262) is connected and fixedly connected to the bottom of the adapter (261); a delivery pipe (31) is rotatably connected to the spinneret (3) via a rotating shaft, and one end of the hose (262) is connected and fixedly connected to one end of the delivery pipe (31); and a plurality of nozzles (311) are installed on the delivery pipe (31).

6. A hollow fiber membrane production device according to claim 5, characterized in that: One end of the rotating shaft connected to the delivery pipe (31) extends to the outside of the spinneret (3) and is fixedly connected to a gear (312); an electric push rod (317) is fixedly connected to the outer wall of the spinneret (3); an output end of the electric push rod (317) is fixedly connected to a rack (313), and the rack (313) is meshed with the gear (312); two connecting blocks (314) are fixedly connected to the bottom of the rack (313); two side plates (316) are fixedly connected to the outer wall of the spinneret (3), a cross bar (315) is fixedly connected between the two side plates (316), and the connecting block (314) is slidably connected to the cross bar (315).

7. A hollow fiber membrane production device according to claim 6, characterized in that: A drying tank (4) is fixedly connected to one end of the spinneret (3) close to the second fixed frame (6); a partition (5) is provided between the drying tank (4) and the spinneret (3); two second guide rollers (41) are rotatably connected in the drying tank (4) via bearings; a plurality of heating tubes (42) are fixedly connected to the bottom end of the drying tank (4); and a fan (43) is fixedly connected to the bottom of the drying tank (4).

8. A hollow fiber membrane production device according to claim 7, characterized in that: The bottom end of the spinneret (3) is rotatably connected to three rollers (32) via bearings, and tensioning rollers (33) are fixedly connected between the rollers (32); the bottom of the tensioning rollers (33) is fixedly connected to a lifting frame (331) via a mounting seat; the bottom of the spinneret (3) is fixedly connected to two fixed seats (332); the lifting frames (331) slide on the fixed seats (332); the bottom of the spinneret (3) is fixedly connected to two third motors (333), the output shafts of the third motors (333) are fixedly connected to reciprocating screw rods (334), the top ends of the reciprocating screw rods (334) are rotatably connected to the fixed seats (332) via bearings, and the lifting frames (331) are threadedly connected to the reciprocating screw rods (334); a shell (335) is provided on the outer side of the third motor (333).

9. A hollow fiber membrane production device according to claim 8, characterized in that: The top of the mixing barrel (21) is connected and fixedly connected to a feed hopper (22), and a control valve is installed on the feed hopper (22); a filter cartridge (242) is connected to the inner wall of the top of the mixing barrel (21) by bolts; the filter cartridge (242) is arranged below the feed hopper (22); a second spring (243) is fixedly connected to the bottom of the filter cartridge (242); a filter plate (241) is fixedly connected to the top of the second spring (243), and the filter plate (241) slides on the inner wall of the filter cartridge (242).

10. A method for producing a hollow fiber membrane, applicable to a hollow fiber membrane production device according to claims 1 to 9, characterized in that: The following steps are involved: S1: dissolving polyvinylidene fluoride, additives and various high molecular polymers in a solvent, and stirring the mixture to form a film-forming solution; S2: Filter the impurities in the mixed material and defoam the film-making liquid; S3: core yarn production by spinning device; S4: By adjusting the wire arrangement mechanism, the tension of the core wire is adjusted to better contact with the solution for film making; S5: The membrane filaments are dried and air-dried by the drying mechanism, and then enter the winding mechanism to be wound up.

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