CN217646200U - Hydrophilicity transformation production line of heavy ion microporous membrane - Google Patents

Abstract

The utility model provides a hydrophilicity of heavy ion microporous membrane reforms transform production line belongs to heavy ion microporous membrane technical field. The method solves the problem that the heavy ion microporous membrane with poor hydrophilicity modification quality has poor self-stopping effect when being used on a precise infusion apparatus. It is including the heavy ion microporous membrane unwinding mechanism that sets gradually, the light grafting mechanism, heavy ion microporous membrane winding mechanism and set up the grafting liquid coating mechanism between heavy ion microporous membrane unwinding mechanism and light grafting mechanism, grafting liquid coating mechanism includes the support and connects on the support and along the coating cylinder subassembly of horizontal direction setting, the axial of coating cylinder subassembly is mutually perpendicular with grafting liquid coating mechanism to the direction of light grafting mechanism, coating cylinder subassembly has the passageway of overflowing and coating cylinder subassembly periphery side has a plurality of and overflows the infiltration holes that the passageway is linked together, still be connected with the scraper blade on the support and the scraper blade is more close to the light grafting mechanism than in coating cylinder subassembly. It has the advantages of high hydrophilic modification quality, good self-stopping effect and the like.

Description

Hydrophilicity transformation production line of heavy ion microporous membrane

Technical Field

The utility model belongs to the technical field of heavy ion microporous membrane, a hydrophilicity transformation production line of heavy ion microporous membrane is related to.

Background

The heavy ion microporous membrane is a novel microporous filtering membrane formed by forming nuclear tracks on the surface of a heavy ion bombarded film and forming pores through irradiation and etching processes, is a sieve pore type filtering material, has round and uniform micropore pores, can intercept particles larger than the pores by 100 percent, is the only filtering membrane with real pores, high precision and excellent performance, and is the optimal filtering selection for a precision infusion apparatus. At present, precision infusion sets all require automatic stopping after infusion is completed, namely, the infusion sets have a self-stopping function (namely, automatic stopping function), and the principle is that when the infused liquid medicine is completely soaked into membrane holes, the liquid cannot spontaneously flow out of the holes due to the existence of surface tension. However, the heavy ion microporous membrane is made of PET, the material structure is compact, and hydrophilic groups are relatively lacking, so that the existing heavy ion microporous membrane does not have a self-stopping function, and therefore, it is necessary to improve the hydrophilicity of the heavy ion microporous membrane, especially the hydrophilicity of each membrane pore (effective adhesion of a liquid medicine in the membrane pore is a core factor for realizing self-stopping).

In the existing hydrophilic modification, one mode is photochemical grafting, for example, an ultraviolet grafting device and a grafting process for a porous membrane material are disclosed in patent application No. 201910889460.7, and the ultraviolet grafting device and the grafting process adopt that the porous membrane is soaked and wetted in a grafting liquid tank and then enters an ultraviolet grafting device for ultraviolet grafting, so that the hydrophilic modification of the membrane is completed. Different from the common porous membrane, the heavy ion microporous membrane is relatively lack of hydrophilic groups, so that the grafting liquid enters membrane pores of the heavy ion microporous membrane to be difficult to wet in short-time contact, and if the heavy ion microporous membrane is subjected to hydrophilicity transformation in the manner, the soaking time of the heavy ion microporous membrane in a grafting liquid groove is generally selected to be prolonged, so that the grafting liquid can be adsorbed in each membrane pore of the heavy ion microporous membrane to form a wetting effect. However, the grafting solution is a chemical agent, and chemical corrosion is easily caused by prolonging the soaking time of the heavy ion microporous membrane in the grafting solution tank, so that the hydrophilic modification quality is deteriorated, and the self-stopping effect of the heavy ion microporous membrane subjected to hydrophilic modification on a precision infusion apparatus is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide a heavy ion microporous membrane's hydrophilicity transformation production line, solved the poor heavy ion microporous membrane that leads to of hydrophilicity transformation quality and be used for the accurate transfusion system on the not good problem of liquid effect of ending certainly.

The purpose of the utility model can be realized by the following technical proposal:

the hydrophilicity transformation production line of the heavy ion microporous membrane comprises a heavy ion microporous membrane unwinding mechanism, a light grafting mechanism and a heavy ion microporous membrane winding mechanism which are sequentially arranged, and is characterized in that the hydrophilicity transformation production line of the heavy ion microporous membrane further comprises a grafting liquid coating mechanism arranged between the heavy ion microporous membrane unwinding mechanism and the light grafting mechanism, the grafting liquid coating mechanism comprises a support and a coating roller assembly connected to the support and arranged along the horizontal direction, the axial direction of the coating roller assembly is perpendicular to the direction from the grafting liquid coating mechanism to the light grafting mechanism, the coating roller assembly is provided with an overflowing channel, the outer peripheral side of the coating roller assembly is provided with a plurality of permeation holes communicated with the overflowing channel, and the support is further connected with a scraper and the scraper is closer to the light grafting mechanism than the coating roller assembly.

Before production, the heavy ion microporous membrane is wound into a cylindrical shape and is installed on a heavy ion microporous membrane unwinding mechanism, then the heavy ion microporous membrane is wound on a heavy ion microporous membrane winding mechanism after sequentially passing through a grafting solution coating mechanism and a light grafting mechanism by hand, a coating roller assembly and a scraper blade are both contacted with the upper side surface of the heavy ion microporous membrane when the heavy ion microporous membrane passes through the grafting solution coating mechanism, in practice, an inlet of a channel of the coating roller assembly can be connected with an outlet of a water pump, and then the grafting solution is pumped into the coating roller assembly by using the water pump.

During production, the heavy ion microporous membrane unwinding mechanism and the heavy ion microporous membrane winding mechanism work simultaneously, at the moment, the heavy ion microporous membrane moves relative to the coating roller assembly, friction force is generated between the heavy ion microporous membrane and the coating roller assembly, the coating roller assembly rotates accordingly, the grafting liquid pumped into the coating roller assembly permeates to the outer peripheral side of the coating roller assembly through the permeation holes, and the grafting liquid permeating to the outer peripheral side of the coating roller assembly is coated on the heavy ion microporous membrane along with the pulling of the heavy ion microporous membrane and the rotation of the coating roller assembly. And because the scraper blade is closer to the light grafting mechanism than the coating roller component, after the grafting liquid is coated on the upper side surface of the heavy ion microporous membrane, the scraper blade can scrape the grafting liquid coated on the upper side surface of the heavy ion microporous membrane into each membrane pore of the heavy ion microporous membrane along with the continuous pulling of the heavy ion microporous membrane. Then, when the heavy ion microporous membrane passes through the light grafting mechanism, grafting reaction can be generated in each membrane pore of the heavy ion microporous membrane so as to improve the hydrophilicity of each membrane pore on the heavy ion microporous membrane.

According to the hydrophilicity modification production line, the grafting liquid is automatically coated on the upper side surface of the heavy ion microporous membrane by using the coating roller assembly in the moving process of the heavy ion microporous membrane, and the grafting liquid can be forcibly squeezed into each membrane hole of the heavy ion microporous membrane to form wetness by combining the scraping action generated by relative movement between the upper heavy ion microporous membrane and the scraper. The hydrophilic modification production line has the advantages that due to the fact that the mode that the grafting liquid is squeezed into the membrane holes by the scraper exists, compared with the mode that the heavy ion microporous membrane is soaked in the grafting liquid groove, the risk that the heavy ion microporous membrane is corroded before photo-grafting is greatly reduced, the hydrophilic modification quality of the heavy ion microporous membrane is greatly improved, and the self-stopping liquid effect of the heavy ion microporous membrane after hydrophilic modification when the heavy ion microporous membrane is applied to a precision filter is improved.

In the hydrophilicity modification production line of the heavy ion microporous membrane, the coating roller assembly comprises a roller connected to the support and an outer sleeve which is fixed outside the roller and made of rubber, the permeation holes are densely distributed on the outer sleeve, and the overflowing channel comprises a main channel arranged along the axial direction of the roller and a plurality of liquid passing holes arranged on the outer peripheral side of the roller.

The coating roller component is arranged to comprise a roller connected to the support and an outer sleeve fixed outside the roller, the outer sleeve is made of rubber, certain extrusion force can be formed by matching the elasticity of the outer sleeve in the process that the heavy ion microporous membrane is pulled, grafting liquid (the grafting liquid firstly flows into the main channel and then flows into the liquid passing hole and finally permeates to the outer peripheral side of the outer sleeve from the permeation hole densely distributed on the outer sleeve, and the permeation hole is densely distributed on the outer sleeve, namely similar to the principle of a slipper sole with ventilation in daily life), is coated on the heavy ion microporous membrane and can be preliminarily extruded into the membrane hole of the heavy ion microporous membrane, and then the grafting liquid can be better extruded into the membrane hole of the microporous membrane by matching with the use of a scraper, so that the hydrophilicity of the membrane hole can be effectively modified during optical grafting, and the modification quality of the heavy ion microporous membrane is further improved so as to ensure the self-stopping liquid effect when the heavy ion microporous membrane is applied to a precision filter.

In the hydrophilicity transformation production line of the heavy ion microporous membrane, the roller comprises a roller body and a connecting shaft which penetrates through the roller body and is fixedly connected with the support, the roller body can rotate relative to the connecting shaft, the main channel is arranged on the connecting shaft, the liquid passing hole is arranged on the peripheral side of the roller body, the flow passing channel further comprises a plurality of flow holes arranged on the peripheral side of the connecting shaft and a flow passing cavity positioned between the roller body and the connecting shaft.

The complete flow path of the grafting liquid is a main channel → a flow hole → a flow cavity → a liquid hole → a penetration hole, and the arrangement of the flow cavity is mainly to ensure that the grafting liquid permeates out from each penetration hole as much as possible in the rotation process of the roller assembly, so that the grafting liquid can be coated on the heavy ion microporous membrane more uniformly, and the grafting liquid can enter each membrane hole by matching with a scraper in the pulling process of the heavy ion microporous membrane so as to ensure the hydrophilic modification quality of the heavy ion microporous membrane.

In foretell heavy ion microporous membrane's hydrophilicity transformation production line, the connecting axle include the axis body and from the location head that the axis body both ends stretch out, be equipped with the cavity in the barrel, two location heads are worn out the both ends of barrel respectively and are equipped with the bearing between location head and the barrel, form above-mentioned overflowing chamber between two bearings, axis body periphery wall and the barrel inner wall.

Through the arrangement, the overflowing cavity can be formed between the connecting shaft and the cylinder, so that the grafting liquid can be coated on the heavy ion microporous membrane more uniformly to improve the hydrophilic modification quality of the heavy ion microporous membrane.

In the hydrophilic modification production line of the heavy ion microporous membrane, the support is provided with a movable groove, and the connecting shaft can move up and down along the movable groove and can be positioned after moving.

When equipment is maintained or the power is cut off and the production is stopped, the heavy ion microporous membrane unwinding mechanism and the heavy ion microporous membrane winding mechanism do not work, and at the moment, the heavy ion microporous membrane is kept still. At the moment, the connecting shaft can be moved upwards and then positioned, so that the coating roller assembly is not contacted with the heavy ion microporous membrane, the coating roller assembly is prevented from being corroded due to long-time contact with the same position of the heavy ion microporous membrane in the process of equipment maintenance or production halt due to power failure, and the hydrophilic modification quality of the heavy ion microporous membrane in subsequent production is ensured.

In the hydrophilic modification production line of the heavy ion microporous membrane, the bracket is in threaded connection with two operating screws in the vertical direction, the rod part of one operating screw is fixed with one positioning head, and the rod part of the other operating screw is fixed with the other positioning head.

The operating screw is in threaded connection with the support, the rod part of the operating screw is fixed with the positioning head, and the operating screw can move up and down relative to the support along the threads when being rotated, so that the connecting shaft can naturally move up or down and can be positioned after moving.

In the hydrophilicity modification production line of the heavy ion microporous membrane, the scraper is made of rubber, is hinged on the support and can swing under the action of self gravity.

The scraper is made of rubber, so that the heavy ion microporous membrane cannot be scratched. Meanwhile, the scraper is hinged on the support and can swing under the action of the gravity of the scraper, so that the scraper can smoothly scrape grafting liquid coated on the heavy ion microporous membrane into the membrane pores in the pulling process of the heavy ion microporous membrane; on the other hand, when the heavy ion microporous membrane fluctuates in the pulling process due to the fact that the unreeling speed is higher than the reeling speed, the scraper can swing in cooperation with the fluctuation of the heavy ion microporous membrane, and therefore the phenomenon that the scraper is fixed and the heavy ion microporous membrane is torn in the fluctuation process of the heavy ion microporous membrane can be avoided.

In addition, grafting liquid is inevitably remained on the scraper, when equipment is maintained or the production is stopped due to power failure, a user can reversely swing the scraper to avoid the phenomenon that the scraper is corroded due to long-time contact with the same position of the heavy ion microporous membrane in the process of equipment maintenance or the production is stopped due to power failure, and the hydrophilic modification quality of the heavy ion microporous membrane in subsequent production is ensured.

In the above hydrophilicity transformation production line of the heavy ion microporous membrane, the optical grafting mechanism comprises a frame and two ultraviolet lamp banks arranged on the frame in opposite directions, the two ultraviolet lamp banks are arranged on the frame in a horizontal direction, the hydrophilicity transformation production line further comprises a protective film unwinding mechanism arranged between the grafting liquid coating mechanism and the optical grafting mechanism and a protective film winding mechanism arranged between the optical grafting mechanism and the heavy ion microporous membrane winding mechanism.

Before production, the protective film unwinding mechanism is sleeved with a wound cylindrical protective film, the protective film penetrates between two ultraviolet lamp rows on the light grafting mechanism and then is wound on the protective film winding mechanism, and the protective film is located below the heavy ion microporous film. The protective film only plays a protective role so as to prevent the grafting liquid from dripping onto the ultraviolet lamp row after penetrating from the upper surface to the lower surface of the heavy ion microporous film to influence the photo-grafting effect, and the hydrophilic modification quality of the heavy ion microporous film can be improved to a certain extent.

In foretell hydrophilicity of heavy ion microporous membrane reforms transform production line, this hydrophilicity reforms transform production line is still including setting up the heavy ion microporous membrane permanent tension mechanism between heavy ion microporous membrane unwinding mechanism and graft liquid coating mechanism, heavy ion microporous membrane permanent tension mechanism includes the mount pad and sets up in the mount pad and can reciprocate's dead weight cylinder, be fixed with position sensor and lower position sensor on the mount pad, when dead weight cylinder moves down and is close to lower position sensor heavy ion microporous membrane unwinding mechanism stop work, when dead weight cylinder moves up and is close to upper position sensor heavy ion unwinding microporous membrane mechanism begins work.

The unwinding speed of the heavy ion microporous membrane unwinding mechanism is always higher than the winding speed of the heavy ion microporous membrane winding mechanism (if the unwinding speed is lower than the winding speed of the heavy ion microporous membrane winding mechanism, the heavy ion microporous membrane is directly torn), so that the heavy ion microporous membrane has the phenomena of transverse deviation, up-and-down fluctuation and the like in the production process. Therefore, the heavy ion microporous membrane hydrophilicity modification production line has a heavy ion microporous membrane constant tension mechanism between a heavy ion microporous membrane unreeling mechanism and a grafting solution coating mechanism, and specifically, before the heavy ion microporous membrane passes through the grafting solution coating mechanism, the heavy ion microporous membrane firstly passes through a mounting seat of the heavy ion microporous membrane constant tension mechanism, and a self-weight roller is pressed on the heavy ion microporous membrane under the action of self gravity. Like this in production process, when heaving and dropping appear in the heavy ion microporous membrane, the dead weight cylinder also reciprocates together to control heavy ion microporous membrane unwinding mechanism stop work when the dead weight cylinder moves down and is close to lower position sensor or control heavy ion microporous membrane unwinding mechanism to begin work when the dead weight cylinder moves up and is close to upper position sensor, make from this that the heavy ion microporous membrane can keep certain rate of tension in production process all the time, thereby guarantee the reliability of heavy ion microporous membrane hydrophilicity transformation.

Generally, in the conventional film production process, a tensioner which is already available on the market is used for tensioning the film, and the pressure acting on the film is automatically adjusted according to the tensioning degree of the film. However, the membrane pores of the heavy ion microporous membrane are far more fragile than the conventional membrane, and if the conventional tensioner is used to tension the membrane, the minimum pressure applied may also cause the heavy ion microporous membrane to break.

Compared with the prior art, the hydrophilicity modification production line of the heavy ion microporous membrane has the following advantages:

1. the grafting liquid is automatically coated on the upper side surface of the heavy ion microporous membrane by using the coating roller component in the moving process of the heavy ion microporous membrane, and the grafting liquid can be forcedly squeezed into each membrane hole of the heavy ion microporous membrane to form humidification by combining the scraping action generated by the relative movement between the heavy ion microporous membrane and the scraper, so that the risk of corrosion of the heavy ion microporous membrane before photo-grafting is greatly reduced, the hydrophilic modification quality of the heavy ion microporous membrane is greatly improved, and the self-stopping effect of the heavy ion microporous membrane after hydrophilic modification when applied to a precision filter is improved;

2. utilize the overcoat that adopts rubber to make on the coating cylinder subassembly, can cooperate the elasticity of overcoat to form certain extrusion force at heavy ion microporous membrane pulling in-process, can be by preliminary extrusion to the downthehole membrane of heavy ion microporous membrane when making the graft solution coating on the heavy ion microporous membrane, later cooperate the use of scraper blade to make the graft solution can extrude the downthehole membrane of microporous membrane better, just can effectively reform transform the hydrophilicity of membrane pore like this when the photografting, the hydrophilicity that has further improved heavy ion microporous membrane reforms transform the liquid effect of ending when the quality is used in order to guarantee to use precision filter certainly.

Drawings

Fig. 1 is a schematic perspective view of a hydrophilicity reforming production line of the heavy ion microporous membrane.

Fig. 2 is a sectional view of the hydrophilicity reforming production line of the heavy ion microporous membrane.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an enlarged view of the coating roller assembly of fig. 3.

Fig. 5 is another angular cross-sectional view (cross-sectional direction perpendicular to fig. 2) of the present heavy ion microporous membrane hydrophilicity modification line where the coating roller assembly is located.

Fig. 6 is an enlarged view of the coating roller assembly of fig. 5.

In the figure, 1, a heavy ion microporous membrane unwinding mechanism; 2. a heavy ion microporous membrane constant tension mechanism; 3. a grafting solution coating mechanism; 4. a photo-grafting mechanism; 5. a dryer; 6. a heavy ion microporous membrane winding mechanism; 7. a protective film unwinding mechanism; 8. a protective film winding mechanism; 9. a lining film unwinding mechanism; 10. a hot film laminating machine; 11. a mounting seat; 12. a self-weight roller; 13. an upper position sensor; 14. a lower position sensor; 15. a support; 15a, a movable groove; 15b, a grafting liquid recovery tank; 16. coating the roller assembly; 17. an overflow channel; 17a, a main channel; 17b, a flow hole; 17c, an overflowing cavity; 17d, a liquid passing hole; 18. a penetration hole; 19. a drum; 19a, a cylinder body; 19b, a connecting shaft; 19b1, a shaft body; 19b2, a positioning head; 19b3, a coupling block; 20. a jacket; 21. a bearing; 22. operating the screw; 23. a guide roller; 24. a squeegee; 25. a frame; 26. an ultraviolet lamp bank; 27. a support roller; 28. a lock nut; 29. a heavy ion microporous membrane; 30. a protective film; 31. and (4) lining the film.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the hydrophilicity modification production line of the heavy ion microporous membrane comprises a heavy ion microporous membrane unreeling mechanism 1, a heavy ion microporous membrane constant tension mechanism 2, a grafting solution coating mechanism 3, a light grafting mechanism 4, a dryer 5 and a heavy ion microporous membrane reeling mechanism 6 which are sequentially arranged. The heavy ion microporous membrane unwinding mechanism 1 and the heavy ion microporous membrane winding mechanism 6 can directly adopt the existing unwinding device and winding device, and the specific structures are not described herein again.

As shown in fig. 1 and 2, the heavy ion microporous membrane constant tension mechanism 2 includes a mounting base 11 and a self-weight roller 12 which is arranged on the mounting base 11 and can move up and down, an upper position sensor 13 and a lower position sensor 14 are fixed on the mounting base 11, when the self-weight roller 12 moves down and approaches the lower position sensor 14, the heavy ion microporous membrane unwinding mechanism 1 stops working, and when the self-weight roller 12 moves up and approaches the upper position sensor 13, the heavy ion microporous membrane unwinding mechanism 1 starts working. In the present embodiment, the upper position sensor 13 and the lower position sensor 14 are proximity sensors.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the grafting solution coating mechanism 3 includes a support 15 and a coating roller assembly 16 connected to the support 15 and disposed along a horizontal direction, an axial direction of the coating roller assembly 16 is perpendicular to a direction from the grafting solution coating mechanism 3 to the photo-grafting mechanism 4, the coating roller assembly 16 has a flow-through channel 17, and an outer circumferential side of the coating roller assembly 16 has a plurality of penetration holes 18 communicated with the flow-through channel 17, a scraper 24 is further connected to the support 15, and the scraper 24 is closer to the photo-grafting mechanism 4 than the coating roller assembly 16. Specifically, the coating roller assembly 16 includes a roller 19 connected to the support 15 and an outer sleeve 20 fixed outside the roller 19 and made of rubber, the penetration holes 18 are densely distributed on the outer sleeve 20, and the flow passage 17 includes a main passage 17a arranged along the axial direction of the roller 19 and a plurality of liquid passing holes 17d arranged on the outer circumferential side of the roller 19. The roller 19 comprises a cylinder 19a and a connecting shaft 19b which penetrates through the cylinder 19a and is fixedly connected with the bracket 15, the cylinder 19a can rotate relative to the connecting shaft 19b, the main channel 17a is arranged on the connecting shaft 19b, the liquid passing hole 17d is arranged on the outer peripheral side of the cylinder 19a, the flow passing channel 17 further comprises a plurality of flow holes 17b arranged on the outer peripheral side of the connecting shaft 19b and a flow passing cavity 17c positioned between the cylinder 19a and the connecting shaft 19 b. The connecting shaft 19b includes a shaft body 19b1 and positioning heads 19b2 extending from two ends of the shaft body 19b1, a cavity is provided in the cylinder body 19a, the two positioning heads 19b2 respectively penetrate through two ends of the cylinder body 19a and are provided with bearings 21 between the positioning heads 19b2 and the cylinder body 19a, and the flow through cavity 17c is formed between the two bearings 21, the outer circumferential wall of the shaft body 19b1 and the inner wall of the cylinder body 19 a. The bracket 15 is provided with a movable groove 15a, and the connecting shaft 19b can move up and down along the movable groove 15a and can be positioned after moving. Two operating screws 22 are screwed on the bracket 15 along the vertical direction, wherein the rod part of one operating screw 22 is fixed with one positioning head 19b2, and the rod part of the other operating screw 22 is fixed with the other positioning head 19b 2. Specifically, a coupling block 19b3 is fixed outside each positioning head 19b2, the rod part of the operating screw 22 is screwed into the corresponding coupling block 19b3, a lock nut 28 is screwed on the operating screw 22, the lock nut 28 is tightly pressed on the coupling block 19b3, the operating screw 22 and the coupling block 19b3 are fixed through the tightening of the lock nut 28, and therefore the operating screw 22 and the coupling block 19b3 cannot move relatively when the operating screw 22 rotates. The scraper 24 is made of rubber, the scraper 24 is hinged on the support 15, and the scraper 24 can swing under the action of self gravity. The support 15 has a graft solution recovery tank 15b, and the coating roller assembly 16 and the scraper 24 are located above the graft solution recovery tank 15 b. In this embodiment, two guide rollers 23 are further fixed on the support 15, the heights of the two guide rollers 23 are the same, and the coating roller assembly 16 is located between the two guide rollers 23.

As shown in fig. 1 and fig. 2, the optical grafting mechanism 4 includes a frame 25 and two ultraviolet lamp banks 26 disposed on the frame 25 and opposite to each other, and both the two ultraviolet lamp banks 26 are disposed on the frame 25 along a horizontal direction. The frame 25 of the optical grafting mechanism 4 is provided with two support rollers 27, the ultraviolet lamp bank 26 is located between the two support rollers 27 along the arrangement direction, the two support rollers 27 have the same height, and the support rollers 27 are located between the two ultraviolet lamp banks 26. In this embodiment, the hydrophilicity transformation production line further includes a protective film unwinding mechanism 7 disposed between the grafting solution coating mechanism 3 and the light grafting mechanism 4, and a protective film winding mechanism 8 disposed between the light grafting mechanism 4 and the heavy ion microporous film winding mechanism 6. Further, the hydrophilicity modification production line further comprises a lining film unreeling mechanism 9 and a hot film laminating machine 10 which are sequentially arranged between the dryer 5 and the heavy ion microporous film reeling mechanism 6.

Before production, the protective film 30 and the lining film 31 are arranged: installing the wound cylindrical protective film 30 on the protective film unwinding mechanism 7, then manually winding the protective film 30 on the protective film unwinding mechanism 7 after the protective film 30 passes through the photo-grafting mechanism 4 in an unfolding mode, wherein the protective film 30 specifically passes through between two ultraviolet lamp rows 26 of the photo-grafting mechanism 4, and the two support rollers 27 are abutted against the lower side surface of the protective film 30; the liner film 31 wound in a cylindrical shape is wound and mounted on the liner film unwinding mechanism 9, and then the liner film 31 is manually wound on the heavy ion microporous film winding mechanism 6 after passing through the thermal film coating machine 10 in an unwinding manner. Next, the heavy ion microporous membrane 29 is arranged: the method comprises the steps of winding a heavy ion microporous membrane 29 which is wound into a cylinder shape on a heavy ion microporous membrane unwinding mechanism 1, then manually sequentially passing the heavy ion microporous membrane 29 through a heavy ion microporous membrane constant tension mechanism 2 (a self-weight roller 12 in the heavy ion microporous membrane constant tension mechanism 2 is pressed on the upper side surface of the heavy ion microporous membrane 29) in an unfolding mode, a grafting solution coating mechanism 3 (two guide rollers 23 in the grafting solution coating mechanism 3 are respectively abutted against the lower side surface of the heavy ion microporous membrane 29, a coating roller assembly 16 and a scraper 24 are respectively abutted against the upper side surface of the heavy ion microporous membrane 29, in practice, an inlet of a channel of the coating roller assembly 16 is connected with an outlet of a water pump, then pumping a grafting solution into the coating roller assembly 16 by using a water pump, a grafting solution recovery tank 15b can be communicated with a grafting solution tank to realize the recovery of the grafting solution), a light grafting mechanism 4 (the heavy ion microporous membrane 29 passes through between two ultraviolet lamp banks 26), the heavy ion microporous membrane 29 is positioned above a protective membrane 30, a supporting roller 27 is also positioned above the heavy ion microporous membrane 29, a drying machine 5 and a hot rolling machine 10 (a lining membrane 31 is positioned below the heavy ion microporous membrane 29 and is wound on the heavy ion microporous membrane 1 and the heavy ion microporous membrane 2 in a final state as shown in a film winding state as a picture as shown in a picture.

During production, the heavy ion microporous membrane unwinding mechanism 1 and the heavy ion microporous membrane winding mechanism 6 work simultaneously (the protective membrane unwinding mechanism 7, the protective membrane winding mechanism 8 and the lining membrane unwinding mechanism 9 also work), the heavy ion microporous membrane 29 is pulled, because the unwinding speed of the heavy ion microporous membrane unwinding mechanism 1 is always greater than the winding speed of the heavy ion microporous membrane winding mechanism 6 (if the former is smaller than the latter, the heavy ion microporous membrane 29 is directly torn), when the heavy ion microporous membrane 29 fluctuates up and down, the self-weight roller 12 also moves up and down together, and when the self-weight roller 12 moves down and is close to the lower position sensor 14, the heavy ion microporous membrane unwinding mechanism 1 is controlled to stop working or the self-weight roller 12 moves up and is close to the upper position sensor 13, so that the heavy ion microporous membrane 29 can always keep a certain tension degree in the production process, and therefore the reliability of hydrophilic modification of the heavy ion microporous membrane 29 is ensured. The heavy ion microporous membrane 29 moves relative to the coating roller assembly 16 to generate friction between the two, the coating roller assembly 16 rotates, the grafting liquid pumped into the coating roller assembly 16 permeates to the outer peripheral side of the coating roller assembly 16 through the penetrating liquid, and the grafting liquid permeating to the outer peripheral side of the coating roller assembly 16 is coated on the heavy ion microporous membrane 29 along with the pulling of the heavy ion microporous membrane 29 and the rotation of the coating roller assembly 16. Because the outermost side of the coating roller component 16 is the outer sleeve 20 made of rubber, a certain extrusion force can be formed by matching with the elasticity of the outer sleeve 20 in the process that the heavy ion microporous membrane 29 is pulled, so that the grafting liquid can be preliminarily extruded into the membrane pores of the heavy ion microporous membrane 29 while being coated on the heavy ion microporous membrane 29. Since the scraper 24 is closer to the photo-grafting mechanism 4 than the coating roller assembly 16, after the grafting liquid is coated on the upper side of the heavy ion microporous membrane 29, the scraper 24 will scrape the grafting liquid coated on the upper side of the heavy ion microporous membrane 29 into each membrane pore of the heavy ion microporous membrane 29 as the heavy ion microporous membrane 29 is continuously pulled. Then, when the heavy ion microporous membrane 29 passes through between the two ultraviolet lamp rows 26 of the light grafting mechanism 4, the direct control of the ultraviolet lamps can enable grafting reaction to be generated in each membrane pore of the heavy ion microporous membrane 29 so as to realize hydrophilic modification of each membrane pore on the heavy ion microporous membrane 29. In the photo-grafting process, the protective film 30 is located below the heavy ion microporous film 29, and the protective film 30 only plays a role in protection to prevent the graft liquid from dropping on the ultraviolet lamp bank 26, and does not affect the function of the ultraviolet lamp on the heavy ion microporous film 29. Then, the heavy ion microporous membrane 29 subjected to hydrophilicity modification is pulled into a dryer 5 for drying, then enters a hot laminating machine 10, is thermally laminated with a liner membrane 31, and is finally wound on a heavy ion microporous membrane winding mechanism 6 (the heavy ion microporous membrane 29 is very fragile, and the liner membrane 31 and the heavy ion microporous membrane 29 are thermally laminated together to ensure the strength of the heavy ion microporous membrane 29).

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (9)

1. The hydrophilicity transformation production line of the heavy ion microporous membrane comprises a heavy ion microporous membrane unreeling mechanism (1), a light grafting mechanism (4) and a heavy ion microporous membrane reeling mechanism (6) which are sequentially arranged, and is characterized in that the hydrophilicity transformation production line of the heavy ion microporous membrane further comprises a grafting liquid coating mechanism (3) arranged between the heavy ion microporous membrane unreeling mechanism (1) and the light grafting mechanism (4), wherein the grafting liquid coating mechanism (3) comprises a support (15) and a coating roller assembly (16) connected to the support (15) and arranged along the horizontal direction, the axial direction of the coating roller assembly (16) is perpendicular to the direction from the grafting liquid coating mechanism (3) to the light grafting mechanism (4), the coating roller assembly (16) is provided with an overflowing channel (17) and a plurality of permeation holes (18) communicated with the overflowing channel (17) are formed in the peripheral side of the coating roller assembly (16), and a scraper (24) is further connected to the support (15) and the scraper (24) is closer to the light grafting mechanism (4) than the coating roller assembly (16).

2. The hydrophilicity modification production line of the heavy ion microporous membrane according to claim 1, wherein the coating roller assembly (16) comprises a roller (19) connected to the support (15) and an outer sleeve (20) fixed outside the roller (19) and made of rubber, the permeation holes (18) are densely distributed on the outer sleeve (20), and the flow passage (17) comprises a main passage (17 a) arranged along the axial direction of the roller (19) and a plurality of liquid passing holes (17 d) arranged on the outer circumferential side of the roller (19).

3. The hydrophilicity transformation production line of the heavy ion microporous membrane according to claim 2, wherein the drum (19) comprises a drum body (19 a) and a connecting shaft (19 b) penetrating through the drum body (19 a) and fixedly connected with the bracket (15), the drum body (19 a) can rotate relative to the connecting shaft (19 b), the main channel (17 a) is arranged on the connecting shaft (19 b) and the liquid passing hole (17 d) is arranged on the outer peripheral side of the drum body (19 a), and the flow passing channel (17) further comprises a plurality of flow passing holes (17 b) arranged on the outer peripheral side of the connecting shaft (19 b) and a flow passing cavity (17 c) located between the drum body (19 a) and the connecting shaft (19 b).

4. The hydrophilicity transformation production line of the heavy ion microporous membrane according to claim 3, wherein the connecting shaft (19 b) comprises a shaft body (19 b 1) and positioning heads (19 b 2) extending from two ends of the shaft body (19 b 1), a cavity is arranged in the cylinder body (19 a), the two positioning heads (19 b 2) respectively penetrate through two ends of the cylinder body (19 a), a bearing (21) is arranged between the positioning heads (19 b 2) and the cylinder body (19 a), and the overflowing cavity (17 c) is formed between the two bearings (21), the outer peripheral wall of the shaft body (19 b 1) and the inner wall of the cylinder body (19 a).

5. The hydrophilic modification production line of the heavy ion microporous membrane according to claim 4, wherein the support (15) is provided with a movable groove (15 a), and the connecting shaft (19 b) can move up and down along the movable groove (15 a) and can be positioned after moving.

6. The hydrophilicity transformation production line of the heavy ion microporous membrane according to claim 5, characterized in that two operation screws (22) are connected to the support (15) in a threaded manner along the vertical direction, wherein the rod of one operation screw (22) is fixed to one positioning head (19 b 2), and the rod of the other operation screw (22) is fixed to the other positioning head (19 b 2).

7. The hydrophilicity transformation production line of the heavy ion microporous membrane according to claim 1, 2, 3, 4, 5 or 6, characterized in that the scraper (24) is made of rubber, the scraper (24) is hinged on the bracket (15) and the scraper (24) can swing under the action of self gravity.

8. The hydrophilic modification production line of a heavy ion microporous membrane according to claim 7, wherein the photografting mechanism (4) comprises a frame (25) and two ultraviolet lamp banks (26) arranged on the frame (25) in opposite directions, the two ultraviolet lamp banks (26) are arranged on the frame (25) in the horizontal direction, the hydrophilic modification production line further comprises a protective film unwinding mechanism (7) arranged between the grafting solution coating mechanism (3) and the photografting mechanism (4), and a protective film winding mechanism (8) arranged between the photografting mechanism (4) and the heavy ion microporous membrane winding mechanism (6).

9. The hydrophilicity modification production line of the heavy ion microporous membrane according to claim 1, further comprising a heavy ion microporous membrane constant tension mechanism (2) disposed between the heavy ion microporous membrane unwinding mechanism (1) and the grafting solution coating mechanism (3), wherein the heavy ion microporous membrane constant tension mechanism (2) comprises a mounting seat (11) and a self-weight roller (19) disposed on the mounting seat (11) and capable of moving up and down, an upper position sensor (13) and a lower position sensor (14) are fixed on the mounting seat (11), the heavy ion microporous membrane unwinding mechanism (1) stops working when the self-weight roller (19) moves down to be close to the lower position sensor (14), and the heavy ion microporous membrane unwinding mechanism (1) starts working when the self-weight roller (19) moves up to be close to the upper position sensor (13).

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