CN112791600A - Hemodialysis membrane production line - Google Patents
Hemodialysis membrane production line Download PDFInfo
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- CN112791600A CN112791600A CN202110203373.9A CN202110203373A CN112791600A CN 112791600 A CN112791600 A CN 112791600A CN 202110203373 A CN202110203373 A CN 202110203373A CN 112791600 A CN112791600 A CN 112791600A
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- 239000012528 membrane Substances 0.000 title claims abstract description 52
- 238000001631 haemodialysis Methods 0.000 title claims abstract description 25
- 230000000322 hemodialysis Effects 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 99
- 238000003825 pressing Methods 0.000 claims abstract description 88
- 238000001035 drying Methods 0.000 claims abstract description 71
- 238000007711 solidification Methods 0.000 claims abstract description 50
- 230000008023 solidification Effects 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 111
- 230000005540 biological transmission Effects 0.000 claims description 43
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- 238000010438 heat treatment Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000009987 spinning Methods 0.000 claims description 3
- 208000010727 head pressing Diseases 0.000 claims 2
- 238000009960 carding Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 4
- 239000012510 hollow fiber Substances 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
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- 150000002500 ions Chemical class 0.000 description 5
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- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- DDRJAANPRJIHGJ-UHFFFAOYSA-N creatinine Chemical compound CN1CC(=O)NC1=N DDRJAANPRJIHGJ-UHFFFAOYSA-N 0.000 description 2
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- 230000000694 effects Effects 0.000 description 2
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- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- 208000010444 Acidosis Diseases 0.000 description 1
- 208000009304 Acute Kidney Injury Diseases 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010014418 Electrolyte imbalance Diseases 0.000 description 1
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- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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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
- B01D67/0016—Coagulation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
-
- 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
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0095—Drying
-
- 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
- B01D69/085—Details relating to the spinneret
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Urology & Nephrology (AREA)
- Heart & Thoracic Surgery (AREA)
- Manufacturing & Machinery (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
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- Dispersion Chemistry (AREA)
- Vascular Medicine (AREA)
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- Inorganic Chemistry (AREA)
- External Artificial Organs (AREA)
Abstract
The invention belongs to the technical field of hollow fiber hemodialysis membrane production, and particularly discloses a hemodialysis membrane production line which comprises a material mixing system, a pump station, a solidifying section, a washing section, a drying section, a wire pressing section and a wire collecting section; the mixing system stirs and mixes the components of the silk film into liquid; liquid flows into the solidification section through a pump station, the liquid is sprayed, solidified and formed into membrane filaments in the solidification section, the membrane filaments are washed in the washing section to remove impurities, and then are dried in the drying section, the filament pressing section presses filaments for forming, and finally the filaments are collected in the filament collecting section. The invention can realize the large-scale production of the hemodialysis membrane, thereby benefiting the majority of patients.
Description
Technical Field
The invention relates to the technical field of production of hollow fiber hemodialysis membranes, in particular to a hemodialysis membrane production line.
Background
Hemodialysis is a main means for treating a large number of patients with acute and chronic renal failure, and a hemodialysis membrane is of great importance in hemodialysis products. Hemodialysis is intended to replace a part of the functions lost in renal failure, such as the removal of metabolic wastes, the regulation of water, electrolytes and acid-base balance. The basic principle of the method is that the method has the mechanisms of dispersion, permeation, convection, ultrafiltration and the like to remove harmful substances in the body. The exchange of solute and water during dialysis forms the theoretical basis for removing toxin, removing water and supplementing necessary substances during hemodialysis. Small molecular substances such as creatinine, urea nitrogen, potassium and the like in the blood of a uremic patient diffuse into the dialysate, ionic sodium and chlorine plasmas in the dialysate have the same concentration as that in the blood, so the inside and the outside of the membrane are kept balanced, and basic groups, calcium ions and the like in the dialysate diffuse into the blood, thereby achieving the purposes of removing toxins and correcting electrolyte disturbance and acidosis. The principle of ultrapure water for hemodialysis is to utilize a dialysis membrane, which is a semipermeable membrane, and the process of transferring solute from one side with high concentration to one side with low concentration according to concentration gradient difference is called dispersion through the relative flow of blood and dialysate at the two sides inside and outside the dialysis membrane; the result of diffusion is an equilibrium of solute concentrations on both sides of the semi-permeable membrane. If a negative pressure is applied to the semipermeable membrane side to increase the transmembrane pressure, moisture can move from the side having a higher pressure to the side having a lower pressure, which is called ultrafiltration. At the same time, a part of the solute moves together with the water, which is called convection.
The dialysis membrane material is a key factor influencing the effect of hemodialysis treatment. With the development of science and technology, the biocompatibility, solute clearance, solute adsorption and other aspects of the dialysis membrane material are greatly improved, the life quality of hemodialysis patients is improved, complications are reduced, and the death rate is reduced. The dialysis membrane is the main component of the dialyzer, and the physical and chemical properties of the dialysis membrane determine the dialysis effect. An ideal dialysis membrane should have good biocompatibility; high removal rate for solute and proper ultrafiltration rate for water; substances with relative molecular mass exceeding 35000 are not allowed to pass through; no specific adsorption; no toxicity, no antigenicity, no body-supplementing activation and no pyrogen; can resist steam disinfection or disinfectant soaking; the packaging material of the dialyzer does not contain methylenedianiline, does not release ethylene oxide and the like.
At present, most of domestic manufacturers for producing hemodialysis membranes are in an equipment groping stage, and many spinning processes are still immature, so that the products are very unstable. Or some large factories directly purchase foreign production lines at high price, and one production line is many millions or even hundreds of millions, so that the product cost is high directly, and the large-scale popularization and the benefit of patients are not convenient.
Disclosure of Invention
The invention aims to provide a hemodialysis membrane production line, the technical scheme of the invention is as follows,
a hemodialysis membrane production line comprises a mixing system and a pump station, and is characterized by further comprising a solidifying section, a washing section, a drying section, a silk pressing section and a silk collecting section; the mixing system stirs and mixes the components of the silk film into liquid; liquid flows into a solidification section through a pump station, the liquid is sprayed, solidified and formed into membrane filaments in the solidification section, the membrane filaments are washed in a washing section to remove impurities, and then are dried in a drying section, and are pressed and formed in a filament pressing section, and finally, filaments are collected in a filament collecting section;
the solidification section comprises a solidification section rack, a liquid pump a-1, a first machine head pressure filament wheel assembly a-2, a machine head water inlet baffle a-3, a spinneret plate protective cover a-4, a machine head guide wheel assembly a-7, a machine head water outlet baffle a-8, a second machine head pressure filament wheel assembly a-9, a heat exchanger a-10 and a spinneret plate a-11; a spinneret plate protective cover is arranged at one end of the upper part of the solidifying section rack, a spinneret plate is arranged in the spinneret plate protective cover, and a head guide wheel assembly a-7 is arranged at the other end of the upper part of the solidifying section rack; the middle part of the solidification section rack is processed into a solidification groove, the left end of the solidification groove is processed with a water inlet, the right end of the solidification groove is processed with a water outlet, the inner side of the left end of the solidification groove is provided with a machine head water inlet baffle, the inner side of the right end of the solidification groove is provided with a machine head water outlet baffle a-8, and the bottom of the solidification groove is provided with a first machine head thread pressing wheel assembly and a second machine head thread pressing wheel assembly; the lower part of the solidification section rack is provided with a liquid pump and a heat exchanger which are respectively connected with a water inlet and a water outlet of the solidification tank through pump pipes;
the washing section comprises a washing rack, a washing water outlet baffle b-1, a washing silk pressing lifting mechanism b-2, a washing water return baffle b-3, a plurality of groups of washing roller transmission assemblies b-4, a plurality of washing lower pressing comb pins b-5 and a plurality of washing upper comb pins b-6; a cleaning tank is added in the cleaning rack, the water cleaning backwater baffle is installed at the inner side of one end of the cleaning tank, the water cleaning effluent baffle is installed at the other end of the cleaning tank, and the plurality of groups of water cleaning roller transmission assemblies are installed above the cleaning tank; each group of washing drum transmission components is provided with a washing upper comb needle;
the water washing silk pressing lifting mechanism mainly comprises a first guide rod b-2-1, a water washing silk pressing wheel assembly b-2-2, a water washing transmission motor b-2-3, a transmission nut assembly b-2-4, a second guide rod b-2-5, a water washing transmission screw rod b-2-6, a second guide rod sleeve b-2-7, a first guide rod sleeve b-2-8, an upper fixing plate b-2-9, a lower fixing plate b-2-10 and a guide groove b-2-11; a first guide rod, a washing transmission lead screw and a second guide rod are arranged between the upper fixing plate and the lower fixing plate, a first guide rod sleeve is arranged on the first guide rod, a second guide rod sleeve is arranged on the second guide rod, a transmission nut component is arranged on the washing transmission lead screw, the washing pressing lead screw component is fixedly arranged on the first guide rod sleeve, the transmission nut component and the second guide rod sleeve, and the washing transmission lead screw is driven by a washing transmission motor to rotate so as to drive the transmission nut component, the first guide rod sleeve, the second guide rod sleeve and the washing pressing lead screw component to move up and down; and a plurality of washing lower pressing gills b-5 are arranged on the washing silk pressing wheel component.
The drying section comprises a drying rack, a plurality of drying upper rollers c-1, a heating gas baffle c-2, a plurality of ion air bars c-3, a plurality of drying lower rollers c-4, a drying machine c-5 and a drying lower comb pin c-6, wherein the drying upper roller for drying and rolling threads is installed at the upper part of the drying rack, the drying lower roller c-4 for drying and rolling threads is installed at the lower part of the drying rack, the drying lower comb pin is installed on the drying lower roller, the heating gas baffle and the drying machine are installed at the bottom of the drying rack from top to bottom, the heating gas baffle is of a shutter type structure, and the ion air bars are evenly installed in the middle of the drying rack;
the wire pressing section comprises a wire pressing rack, a wire pressing lower roller d-1, a tensioning mechanism d-2, a wire pressing wheel d-3, a wire pressing upper roller d-4 and a heating fan d-5; a film yarn inlet is formed in one side of the yarn pressing rack, a film yarn outlet is formed in the other side of the yarn pressing rack, a heating fan is mounted beside the film yarn inlet, a yarn pressing upper roller and a yarn pressing lower roller are mounted in the yarn pressing rack, a yarn pressing wheel is mounted between the yarn pressing upper roller and the yarn pressing lower roller, and a tensioning mechanism for tightening the film yarn is mounted between the yarn pressing lower roller and the film yarn outlet;
the yarn collecting section comprises a yarn collecting rack and a yarn collecting wheel.
In the invention, the drying fan a-5 and the moisture exhauster a-6 are arranged at the top of the solidification section rack, so that the temperature in the solidification section rack is ensured to be stable, and the quality of membrane filaments is ensured.
In the invention, the spinneret plate protective cover is of a shutter structure, so that the air flow can be ensured not to be directly blown onto the dialysis membrane yarn, and the quality of the yarn is ensured.
In the invention, the machine head water outlet baffle and the water washing water outlet baffle are of a front and back sandwich structure, a plurality of water outlets are processed on the front layer, the water outlets are inclined downwards, a plurality of water flow through holes are processed on the back layer, and the water flow through holes and the water outlets are opposite in a staggered manner.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a complete hemodialysis membrane production line, which can realize large-scale production of hemodialysis membranes and further benefit patients;
secondly, an independent heating circulation system is arranged at the solidification section, so that the temperature of the liquid water in the solidification section can be kept constant, and the quality of the product is ensured;
spinning at the solidification section through a spinneret plate, installing the spinneret plate in a spinneret plate protective cover, and ensuring that air flow is not directly blown onto the dialysis membrane filaments to the maximum extent and the quality of the filaments by adopting a shutter mode structure;
fourthly, according to the production condition, a plurality of sections of washing sections can be additionally provided with automatic membrane yarn cleaning sections in the washing section;
fifthly, the water washing water outlet baffle of the water washing section adopts a shutter and staggered hole structure mode, so that the flow speed of water flow is reduced, and water flow cannot directly wash membrane filaments, so that the membrane is not damaged due to the water flow while the time synchronization membrane is cleaned by the water flow;
sixthly, the drying section generates heat through a dryer installed at the bottom to ensure the constant temperature in the drying rack, the heat conducts the heat to the upper side of the drying rack through a heating gas baffle, and the opening of the heating gas baffle adopts a shutter structure mode to ensure that the air flow can not directly blow the membrane yarns.
Drawings
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a schematic structural view of a solidification section;
FIG. 2-1 is an enlarged view of a portion of the head water inlet baffle;
fig. 2-2 is an enlarged view of a portion of the protective cover of the spinneret plate;
FIGS. 2-3 are enlarged partial views of the nose guide wheel assembly;
FIGS. 2-4 are enlarged partial views of the head water outlet baffle;
FIG. 3 is a schematic structural view of a water washing section;
FIG. 3-1 is a schematic view of a wash down card wire mounted on a wash presser wire assembly;
FIG. 3-2 is a schematic view of the wash upper card wire being mounted on the wash drum drive assembly;
FIG. 4 is a schematic structural view of a drying section;
FIG. 4-1 is an enlarged partial view of the heated gas baffle;
FIG. 4-2 is a schematic view of the structure of the drying lower card wire mounted on the drying lower drum;
FIG. 5 is a water washing wire pressing lifting mechanism;
FIG. 5-1 is a schematic structural view of a lower comb needle b-5 on a water washing and thread pressing lifting mechanism;
FIG. 5-2 is a schematic view of the installation structure of the guide groove b-2-11 and the water-washing wire-pressing wheel b-2-2.
The reference signs are: g is a mixing system, f is a pump station, a is a solidifying section, b is a washing section, c is a drying section, d is a silk pressing section, and e is a silk winding section;
a-a is a core liquid inlet, a-b is a filament liquid inlet, a-1 is a liquid pump, a-2 is a first handpiece pressure filament wheel assembly, a-3 is a handpiece water inlet baffle, a-4 is a spinneret plate protective cover, a-5 is a drying fan, a-6 is a moisture discharging machine, a-7 is a handpiece guide wheel assembly, a-8 is a handpiece water outlet baffle, a-9 is a second handpiece pressure filament wheel assembly, a-10 is a heat exchanger, and a-11 is a spinneret plate;
b-1 is a water washing water outlet baffle, b-2 is a water washing silk pressing lifting mechanism, b-3 is a water washing water return baffle, b-4 is a water washing roller transmission component, b-5 is water washing lower pressing comb pins, and b-6 is water washing upper comb pins;
b-2-1 is a first guide rod, b-2-2 is a washing press screw wheel assembly, b-2-3 is a washing transmission motor, b-2-4 is a transmission nut assembly, b-2-5 is a second guide rod, b-2-6 is a washing transmission screw rod, b-2-7 is a second guide rod sleeve, b-2-8 is a first guide rod sleeve, b-2-9 is an upper fixing plate, b-2-10 is a lower fixing plate, and b-2-11 is a guide groove;
c-1 is an upper drying roller, c-2 is a heating gas baffle, c-3 is an ion air bar, c-4 is a lower drying roller, c-5 is a dryer, and c-6 is a lower drying card wire.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
A hemodialysis membrane production line comprises a mixing system, a pump station, a solidifying section, a water washing section, a drying section, a silk pressing section and a silk collecting section; the mixing system stirs and mixes the components of the silk film into liquid. A material mixing system: the components of the silk film are stirred and mixed according to a certain proportion, simultaneously, the treatments such as bubble removal filtration and the like are carried out, then the stirred liquid is sent into a core liquid inlet a-a and a silk liquid inlet a-b through a pump station, and then the silk film is directly formed after passing through a spinneret plate.
The solidification section comprises a solidification section rack, a liquid pump a-1, a first machine head pressure filament wheel assembly a-2, a machine head water inlet baffle a-3, a spinneret plate protective cover a-4, a machine head guide wheel assembly a-7, a machine head water outlet baffle a-8, a second machine head pressure filament wheel assembly a-9, a heat exchanger a-10 and a spinneret plate a-11; a spinneret plate protective cover is arranged at one end of the upper part of the solidifying section rack, a spinneret plate is arranged in the spinneret plate protective cover, and a head guide wheel assembly a-7 is arranged at the other end of the upper part of the solidifying section rack; the middle part of the solidification section rack is processed into a solidification groove, the left end of the solidification groove is processed with a water inlet, the right end of the solidification groove is processed with a water outlet, the inner side of the left end of the solidification groove is provided with a machine head water inlet baffle, the inner side of the right end of the solidification groove is provided with a machine head water outlet baffle a-8, and the bottom of the solidification groove is provided with a first machine head thread pressing wheel assembly and a second machine head thread pressing wheel assembly; the lower part of the solidification section frame is provided with a liquid pump and a heat exchanger which are respectively connected with a water inlet and a water outlet of the solidification tank through pump pipes. The air outlet of the spinneret plate protective cover in the solidification section is inclined downwards, so that the condition that air flow cannot directly blow to the membrane filaments is guaranteed, meanwhile, the humidity around the membrane filaments is taken away quickly, and the quality of products is guaranteed. The machine head water outlet baffle a-3 also adopts a shutter structure, when the membrane filaments enter the water surface, the water flow is ensured not to directly wash the membrane filaments, the water flow of the coagulating tank enters the liquid pump a-1 through the machine head water return baffle a-8 by a pipeline, and enters the heat exchanger a-10 under the action of the liquid pump, thus carrying out primary heat exchange on the liquid temperature in the coagulating tank and ensuring the stability of the temperature in the coagulating tank. Then the liquid after heat exchange flows through the machine head water outlet baffle plate a-3, and a complete heat exchange process is completed. Meanwhile, a drying fan a-5 at the top of the solidification section rack continuously conveys drying gas to the upper part of the solidification section rack, the humidity of the upper part of the solidification section rack is in a balanced state, and a moisture exhauster a-6 continuously extracts wet air in the upper part of the solidification section rack to ensure the balance of the humidity in the box body.
The washing section can adopt one-section washing or multi-section circulating washing. In the embodiment, a water washing section is selected, wherein each water washing section comprises a washing rack, a water washing water outlet baffle b-1, a water washing silk pressing lifting mechanism b-2, a water washing water return baffle b-3, 10 groups of water washing roller transmission assemblies b-4, a plurality of water washing lower pressing comb pins b-5 and a plurality of water washing upper comb pins b-6; a cleaning tank is added in the cleaning rack, the water cleaning backwater baffle is installed at the inner side of one end of the cleaning tank, the water cleaning effluent baffle is installed at the other end of the cleaning tank, and the plurality of groups of water cleaning roller transmission assemblies are installed above the cleaning tank; and the washing upper comb needles are all installed on each group of washing roller transmission assemblies.
The water washing silk pressing lifting mechanism mainly comprises a first guide rod b-2-1, a water washing silk pressing wheel assembly b-2-2, a water washing transmission motor b-2-3, a transmission nut assembly b-2-4, a second guide rod b-2-5, a water washing transmission lead screw b-2-6, a second guide rod sleeve b-2-7, a first guide rod sleeve b-2-8, an upper fixing plate b-2-9, a lower fixing plate b-2-10 and a guide groove b-2-11; a first guide rod, a washing transmission screw rod and a second guide rod are arranged between the upper fixing plate and the lower fixing plate, a first guide rod sleeve is arranged on the first guide rod, a second guide rod sleeve is arranged on the second guide rod, a transmission nut component is arranged on the washing transmission screw rod, the washing pressing screw rod component is fixedly arranged on the first guide rod sleeve, the transmission nut component and the second guide rod sleeve, the washing transmission screw rod is driven by a washing transmission motor to rotate so as to drive the transmission nut component to drive the washing pressing screw mechanism b-2 to move up and down, and the first guide rod sleeve and the second guide rod sleeve ensure that the washing pressing screw mechanism b-2 always moves up and down along the first guide rod b-2-1 and the second guide rod b-2-5 in the length direction; and a plurality of washing pressing comb pins are arranged on the washing pressing silk wheel component to ensure that the membrane silk is not wound together.
The drying section comprises a drying rack, a plurality of drying upper rollers c-1, a heating gas baffle c-2, a plurality of ion wind bars c-3, a plurality of drying lower rollers c-4, a drying machine c-5 and a drying lower comb pin c-6, wherein the drying upper roller for drying the rolled threads is installed at the upper part of the drying rack, the drying lower roller c-4 for drying the rolled threads is installed at the lower part of the drying rack, the drying lower comb pin is installed on the drying lower roller, the heating gas baffle and the drying machine are installed at the bottom of the drying rack from top to bottom, the heating gas baffle is of a shutter type structure, and 3 ion wind bars are evenly installed in the middle of the drying rack. The dryer c-5 continuously generates specific temperature, heat is conducted to the upper part of the dryer through the heating gas baffle c-2, and the opening of the heating gas baffle adopts a shutter structure mode to ensure that airflow cannot directly blow to the membrane wires. Thereby play a guard action, owing to adopted the oblique opening mode simultaneously, guarantee from the liquid that drops on the membrane silk can directly not drip to bottom box inside.
The wire pressing section comprises a wire pressing rack, a wire pressing lower roller d-1, a tensioning mechanism d-2, a wire pressing wheel d-3, a wire pressing upper roller d-4 and a heating fan d-5; the film yarn inlet is processed on one side of the yarn pressing rack, the film yarn outlet is processed on the other side of the yarn pressing rack, the heating fan is installed beside the film yarn inlet, the yarn pressing upper roller and the yarn pressing lower roller are installed in the yarn pressing rack, the yarn pressing wheel is installed between the yarn pressing upper roller and the yarn pressing lower roller, and the tensioning mechanism used for tightening the film yarn is installed between the yarn pressing lower roller and the film yarn outlet. The heating fan continuously supplies gas with specific temperature to the filament pressing rack to ensure the constant temperature in the box body, thereby ensuring the product quality. The wire pressing wheel d-3 presses and molds the wires, and the tensioning mechanism d-2 can ensure that the membrane wires are always in a tensioning state.
The yarn collecting section comprises a yarn collecting rack and a yarn collecting wheel. The yarn collecting wheel is arranged on the yarn collecting rack, and the produced yarns are collected by the yarn collecting wheel.
Claims (5)
1. A hemodialysis membrane production line comprises a mixing system and a pump station, and is characterized by further comprising a solidifying section, a washing section, a drying section, a silk pressing section and a silk collecting section; the mixing system stirs and mixes the components of the silk film into liquid; liquid flows into a solidification section through a pump station, the liquid is sprayed, solidified and formed into membrane filaments in the solidification section, the membrane filaments are washed in a washing section to remove impurities, and then are dried in a drying section, and are pressed and formed in a filament pressing section, and finally, filaments are collected in a filament collecting section;
the solidification section comprises a solidification section rack, a liquid pump (a-1), a first machine head pressing filament wheel assembly (a-2), a machine head water inlet baffle plate (a-3), a spinneret plate protective cover (a-4), a machine head guide wheel assembly (a-7), a machine head water outlet baffle plate (a-8), a second machine head pressing filament wheel assembly (a-9), a heat exchanger (a-10) and a spinneret plate (a-11); a spinneret plate protective cover is arranged at one end of the upper part of the solidifying section rack, a spinneret plate is arranged in the spinneret plate protective cover, and a head guide wheel assembly (a-7) is arranged at the other end of the upper part of the solidifying section rack; the middle part of the solidification section rack is processed into a solidification groove, the left end of the solidification groove is processed with a water inlet, the right end of the solidification groove is processed with a water outlet, the inner side of the left end of the solidification groove is provided with a machine head water inlet baffle, the inner side of the right end of the solidification groove is provided with a machine head water outlet baffle a-8, and the bottom of the solidification groove is provided with a first machine head thread pressing wheel assembly and a second machine head thread pressing wheel assembly; the lower part of the solidification section rack is provided with a liquid pump and a heat exchanger which are respectively connected with a water inlet and a water outlet of the solidification tank through pump pipes;
the washing section comprises a washing rack, a washing water outlet baffle (b-1), a washing silk pressing lifting mechanism (b-2), a washing water return baffle (b-3), a plurality of groups of washing roller transmission assemblies (b-4), a plurality of washing lower pressing comb pins (b-5) and a plurality of washing upper comb pins (b-6); a cleaning tank is added in the cleaning rack, the water cleaning backwater baffle is installed at the inner side of one end of the cleaning tank, the water cleaning effluent baffle is installed at the other end of the cleaning tank, and the plurality of groups of water cleaning roller transmission assemblies are installed above the cleaning tank; each group of washing drum transmission components is provided with a washing upper comb needle;
the water washing silk pressing lifting mechanism mainly comprises a first guide rod (b-2-1), a water washing silk pressing wheel assembly (b-2-2), a water washing transmission motor b-2-3, a transmission nut assembly (b-2-4), a second guide rod (b-2-5), a water washing transmission lead screw (b-2-6), a second guide rod sleeve (b-2-7), a first guide rod sleeve (b-2-8), an upper fixing plate (b-2-9) and a lower fixing plate (b-2-10); a first guide rod, a washing transmission lead screw and a second guide rod are arranged between the upper fixing plate and the lower fixing plate, a first guide rod sleeve is arranged on the first guide rod, a second guide rod sleeve is arranged on the second guide rod, a transmission nut component is arranged on the washing transmission lead screw, the washing pressing lead screw component is fixedly arranged on the first guide rod sleeve, the transmission nut component and the second guide rod sleeve, and the washing transmission lead screw is driven by a washing transmission motor to rotate so as to drive the transmission nut component, the first guide rod sleeve, the second guide rod sleeve and the washing pressing lead screw component to move up and down; a plurality of washing lower pressing carding wires are arranged on the washing silk pressing wheel component;
the drying section comprises a drying rack, a plurality of drying upper rollers (c-1), a heating gas baffle (c-2), a plurality of ion air bars (c-3), a plurality of drying lower rollers (c-4), a dryer (c-5) and a drying lower comb pin (c-6), wherein the drying upper rollers for drying and rolling threads are installed at the upper part of the drying rack, the drying lower rollers (c-4) for drying and rolling threads are installed at the lower part of the drying rack, the drying lower comb pin is installed on the drying lower rollers, the heating gas baffle and the dryer are installed at the bottom of the drying rack from top to bottom, the heating gas baffle is of a shutter type structure, and the ion air bars are evenly installed in the middle of the drying rack;
the wire pressing section comprises a wire pressing rack, a wire pressing lower roller (d-1), a tensioning mechanism (d-2), a wire pressing wheel (d-3), a wire pressing upper roller (d-4) and a heating fan (d-5); a film yarn inlet is formed in one side of the yarn pressing rack, a film yarn outlet is formed in the other side of the yarn pressing rack, a heating fan is mounted beside the film yarn inlet, a yarn pressing upper roller and a yarn pressing lower roller are mounted in the yarn pressing rack, a yarn pressing wheel is mounted between the yarn pressing upper roller and the yarn pressing lower roller, and a tensioning mechanism for tightening the film yarn is mounted between the yarn pressing lower roller and the film yarn outlet;
the yarn collecting section comprises a yarn collecting rack and a yarn collecting wheel.
2. The hemodialysis membrane line of claim 1, wherein a drying blower (a-5) and a dehumidifying blower (a-6) are installed at the top of the coagulation section frame.
3. The hemodialysis membrane production line of claim 1, wherein the spinneret protective cover is a louver structure.
4. The hemodialysis membrane production line of claim 1, wherein the head water outlet baffle and the water outlet baffle are of a front-back sandwich structure, the front layer is provided with a plurality of water outlets, the water outlets are inclined downwards, the rear layer is provided with a plurality of water flow through holes, and the water flow through holes are staggered and opposite to the water outlets.
5. The hemodialysis membrane manufacturing line according to claim 1, wherein the washing section is provided with a guide groove (b-2-11) for ensuring that the water washing spinning roller (b-2) does not deviate when moving up and down.
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| CN202110203373.9A CN112791600A (en) | 2021-02-24 | 2021-02-24 | Hemodialysis membrane production line |
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Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552507A (en) * | 2003-05-27 | 2004-12-08 | 天津膜天膜工程技术有限公司 | Method and apparatus for primary shaping composite or modified hollow fibre membrane |
| CN2672090Y (en) * | 2003-12-19 | 2005-01-19 | 上海乐生医疗器械有限公司 | Synthetic hollow fiber membrane continuous spinning device |
| CN101148783A (en) * | 2007-11-09 | 2008-03-26 | 北京特斯顿新材料技术发展有限公司 | Dry-method spinning technique for preparing super high molecular weight polyethylene fibre |
| CN102395418A (en) * | 2009-04-13 | 2012-03-28 | 可隆工业株式会社 | Composite hollow fiber membrane and method for manufacturing the same |
| CN103796744A (en) * | 2011-09-15 | 2014-05-14 | 三菱丽阳株式会社 | Method for manufacturing porous hollow fiber film |
| CN203866414U (en) * | 2014-06-06 | 2014-10-08 | 象山康丽针织厂 | Self-circulating LYOCELL fiber forming system |
| CN104197670A (en) * | 2014-08-09 | 2014-12-10 | 陈菊芳 | Protofilament dryer of roller type structure |
| CN204735120U (en) * | 2015-06-09 | 2015-11-04 | 唐勋宏 | Hollow fiber membrane automation line |
| CN105964156A (en) * | 2016-07-10 | 2016-09-28 | 威海威高血液净化制品有限公司 | Preparation method of hollow fiber blood purification membrane and special device thereof |
| CN106245124A (en) * | 2016-09-22 | 2016-12-21 | 曾庆松 | A kind of hollow semi-transparent fibrous membrane silk cleans device |
| CN206052219U (en) * | 2016-09-22 | 2017-03-29 | 曾庆松 | A kind of hollow semi-transparent fibrous membrane silk cleaning device |
| CN206570498U (en) * | 2017-03-20 | 2017-10-20 | 上海鑫孚汽车科技有限公司 | A kind of non-woven fabric production line drying unit |
| US20180104655A1 (en) * | 2015-03-30 | 2018-04-19 | Whatman Gmbh | Improvements In and Relating to Polymeric Membranes |
| CN107970791A (en) * | 2017-12-28 | 2018-05-01 | 深圳市君脉膜科技有限公司 | A kind of preparation method and preparation system of enhanced hollow fiber microfiltration membrane |
| CN208229675U (en) * | 2018-03-28 | 2018-12-14 | 浙江省化工研究院有限公司 | A kind of complete set of equipments preparing enhancement type composite hollow fiber membrane |
| CN109881403A (en) * | 2019-04-22 | 2019-06-14 | 威海威高血液净化制品有限公司 | Fiber washing device and multistage fiber washing system |
| CN210242200U (en) * | 2019-06-04 | 2020-04-03 | 江苏广盛源科技发展有限公司 | Chemical fiber silk drying equipment of even heating |
| CN111115312A (en) * | 2020-02-18 | 2020-05-08 | 江苏厚生新能源科技有限公司 | Spraying slitting production line |
| CN111926401A (en) * | 2020-07-22 | 2020-11-13 | 宁波海格拉新材料科技有限公司 | Aftertreatment system of polyarylate fibers |
| CN111957216A (en) * | 2020-07-21 | 2020-11-20 | 南京久盈膜科技有限公司 | PVDF hollow fiber membrane and preparation method and production device thereof |
| CN215388760U (en) * | 2021-02-24 | 2022-01-04 | 成都创合丰生物科技有限公司 | Hemodialysis membrane production line |
-
2021
- 2021-02-24 CN CN202110203373.9A patent/CN112791600A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1552507A (en) * | 2003-05-27 | 2004-12-08 | 天津膜天膜工程技术有限公司 | Method and apparatus for primary shaping composite or modified hollow fibre membrane |
| CN2672090Y (en) * | 2003-12-19 | 2005-01-19 | 上海乐生医疗器械有限公司 | Synthetic hollow fiber membrane continuous spinning device |
| CN101148783A (en) * | 2007-11-09 | 2008-03-26 | 北京特斯顿新材料技术发展有限公司 | Dry-method spinning technique for preparing super high molecular weight polyethylene fibre |
| CN102395418A (en) * | 2009-04-13 | 2012-03-28 | 可隆工业株式会社 | Composite hollow fiber membrane and method for manufacturing the same |
| CN103796744A (en) * | 2011-09-15 | 2014-05-14 | 三菱丽阳株式会社 | Method for manufacturing porous hollow fiber film |
| CN203866414U (en) * | 2014-06-06 | 2014-10-08 | 象山康丽针织厂 | Self-circulating LYOCELL fiber forming system |
| CN104197670A (en) * | 2014-08-09 | 2014-12-10 | 陈菊芳 | Protofilament dryer of roller type structure |
| US20180104655A1 (en) * | 2015-03-30 | 2018-04-19 | Whatman Gmbh | Improvements In and Relating to Polymeric Membranes |
| CN204735120U (en) * | 2015-06-09 | 2015-11-04 | 唐勋宏 | Hollow fiber membrane automation line |
| CN105964156A (en) * | 2016-07-10 | 2016-09-28 | 威海威高血液净化制品有限公司 | Preparation method of hollow fiber blood purification membrane and special device thereof |
| CN206052219U (en) * | 2016-09-22 | 2017-03-29 | 曾庆松 | A kind of hollow semi-transparent fibrous membrane silk cleaning device |
| CN106245124A (en) * | 2016-09-22 | 2016-12-21 | 曾庆松 | A kind of hollow semi-transparent fibrous membrane silk cleans device |
| CN206570498U (en) * | 2017-03-20 | 2017-10-20 | 上海鑫孚汽车科技有限公司 | A kind of non-woven fabric production line drying unit |
| CN107970791A (en) * | 2017-12-28 | 2018-05-01 | 深圳市君脉膜科技有限公司 | A kind of preparation method and preparation system of enhanced hollow fiber microfiltration membrane |
| CN208229675U (en) * | 2018-03-28 | 2018-12-14 | 浙江省化工研究院有限公司 | A kind of complete set of equipments preparing enhancement type composite hollow fiber membrane |
| CN109881403A (en) * | 2019-04-22 | 2019-06-14 | 威海威高血液净化制品有限公司 | Fiber washing device and multistage fiber washing system |
| CN210242200U (en) * | 2019-06-04 | 2020-04-03 | 江苏广盛源科技发展有限公司 | Chemical fiber silk drying equipment of even heating |
| CN111115312A (en) * | 2020-02-18 | 2020-05-08 | 江苏厚生新能源科技有限公司 | Spraying slitting production line |
| CN111957216A (en) * | 2020-07-21 | 2020-11-20 | 南京久盈膜科技有限公司 | PVDF hollow fiber membrane and preparation method and production device thereof |
| CN111926401A (en) * | 2020-07-22 | 2020-11-13 | 宁波海格拉新材料科技有限公司 | Aftertreatment system of polyarylate fibers |
| CN215388760U (en) * | 2021-02-24 | 2022-01-04 | 成都创合丰生物科技有限公司 | Hemodialysis membrane production line |
Non-Patent Citations (3)
| Title |
|---|
| 原合成纤维研究所: "合成纤维工业", 30 June 1970, 燃料化学工业出版社, pages: 46 - 47 * |
| 堀川明: "染整工艺与管理", 30 August 1996, 纺织工业出版社, pages: 318 - 320 * |
| 祖立武: "化学纤维成型工艺学", 30 September 2014, 哈尔滨工业大学出版社, pages: 150 * |
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