Device and method for preparing capsaicin derivative modified hollow fiber membrane

Abstract

The invention relates to the technical field of semi-permeable membrane manufacturing, and discloses a capsaicin derivative modified hollow fiber membrane preparation device which comprises a shell, an injection port fixedly communicates with the top of the shell, a discharging pipe fixedly communicates with the bottom of the shell, a motor is fixedly connected to the top of the shell, a flow guide pipe fixedly communicates with the outer wall of the shell, and the outer wall of the shell is fixedly connected with a water inlet. A reciprocating mechanism is arranged in the shell, the stirring mechanism is arranged in the shell, the stirring mechanism comprises a centrifugal fan, a flow guide mechanism is arranged on the outer wall of the centrifugal fan, an assembly groove is formed in the outer wall of the centrifugal fan, and a stirring wheel is rotationally connected to the inner wall of the assembly groove through a rotating shaft. The stirring mechanism is used for fully stirring a mixed solution, so that the mixed solution reacts fully, generation of excessive long fibers is avoided, meanwhile, the long fibers in the mixed solution are broken and dissolved, and it is avoided that when a fiber membrane is formed, impurities are attached to the surface of the membrane, and flaws exist on the surface of the fiber membrane.

Description

Technical Field

[0001] The invention relates to the technical field of semipermeable membrane manufacturing, in particular to a preparation device and method for a capsaicin derivative-modified hollow fiber membrane. Background Art

[0002] With the increasing demand for high-efficiency separation technology in various fields, hollow fiber membranes are becoming more and more widely used due to their advantages such as large specific surface area, high separation efficiency and large flux. The preparation device of hollow fiber membranes has come into being. It integrates advanced material transportation, spinning molding and precise control technology, aiming to achieve fine regulation of the hollow fiber membrane preparation process, improve product quality and production efficiency, and lay a solid foundation for its in-depth application in water resource purification, gas separation, biomedicine and other fields.

[0003] The patent application with application number CN201210560696.4 discloses a method for preparing an enhanced hollow fiber composite membrane and a device for preparing an enhanced hollow fiber composite membrane. The preparation device includes a spinning kettle. The casting liquid in the spinning kettle enters the spinneret through a spinning pump and a filter. The long fiber is drawn out from the wire drum and enters the spinneret through a tension control device. The core liquid in the core liquid tank enters the spinneret and is sprayed out. The formed enhanced hollow fiber composite membrane is gelled in a gel tank and then collected on a collecting wheel.

[0004] However, during the stirring and mixing process, the existing hollow fiber membrane preparation device is unable to evenly break the long fibers, and a large number of long fiber fragments remain as impurities and mix into the raw material system. As a result, when the fiber membrane is formed, the impurities adhere to the membrane surface, forming protrusions and holes, resulting in defects on the fiber membrane surface, which interferes with the filtration path, reduces the filtration accuracy and flux, and cannot meet the needs of high-precision and high-throughput filtration. Summary of the invention

[0005] The object of the present invention is to provide a device and method for preparing a hollow fiber membrane modified with a capsaicin derivative, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a preparation device for a capsaicin derivative-modified hollow fiber membrane, comprising a shell, the top of the shell is fixedly connected to an injection port, the bottom of the shell is fixedly connected to a discharge pipe, the top of the shell is fixedly connected to a motor, the outer wall of the shell is fixedly connected to a flow guide pipe, a reciprocating mechanism is arranged inside the shell, and further comprising: A stirring mechanism is arranged inside a shell, the stirring mechanism comprises a centrifugal fan, a flow guide mechanism is arranged on the outer wall of the centrifugal fan, an assembly groove is provided on the outer wall of the centrifugal fan, an inner wall of the assembly groove is rotatably connected to a stirring wheel via a rotating shaft, a guide hole is provided on the outer wall of the stirring wheel, a guide groove is provided on the outer wall of the stirring wheel, a stirring rod is fixedly connected to the outer wall of the stirring wheel, the centrifugal fan stirs the mixed liquid by centrifugal force, and the stirring rod drives the long fibers in the mixed liquid to be broken and dissolved through the stirring wheel.

[0007] According to the above technical solution, the reciprocating mechanism includes a center rod, the outer wall of the center rod is rotatably connected to a limiting sleeve through a bearing, a circulation groove is opened on the outer wall of the center rod, and the wall of the circulation groove is slidably connected to a reciprocating block through a slider, the bottom of the center rod passes through the limiting sleeve and is fixedly connected to the top of the rotating disk, and the reciprocating block is used to drive the centrifugal fan to reciprocate up and down.

[0008] According to the above technical solution, the air guide mechanism includes a telescopic rod, wherein one end of the telescopic rod is fixedly connected to the outer wall of the centrifugal fan near the centrifugal fan, the outer wall of the telescopic rod is fixedly connected to a support rod, the outer wall of the support rod is connected to a rotating plate through a bearing hinge, the top of the rotating plate is rotatably connected to a guide wheel through a rotating shaft, the bottom of the outer wall of the rotating plate is hinged to a swing rod through a rotating shaft, the inner wall of the swing rod is covered with a ball head rod, the outer wall of the ball head rod is fixedly connected to a sliding sleeve, the inner wall of the sliding sleeve is slidably connected to a guide rod, the end of the guide rod is fixedly connected to the outer wall of the rotating disk near the rotating disk, the outer wall of the sliding sleeve is fixedly connected to a spring 1, the other end of the spring 1 is fixedly connected to the outer wall of the rotating plate, and the outer wall of the guide wheel rolls along the inner wall of the shell.

[0009] According to the above technical solution, a limiting groove 1 is provided on the inner wall of the rotating plate, a limiting block is fixedly connected to the outer wall of the support rod, a guide plate is connected to the inner wall of the swing rod through a rotating shaft hinge, a guide groove is provided on the inner wall of the guide plate, a limiting groove 2 is provided on the inner wall of the guide plate, a spring 2 is fixedly connected to the groove wall of the limiting groove 2, the guide plate is used to guide the mixed liquid, and the guide groove is used to guide short fiber impurities in the mixed liquid.

[0010] According to the above technical solution, the bottom of the shell is fixedly connected to a coagulation pool via connecting ribs, the inner wall of the coagulation pool is fixedly connected to a collecting bin, the outer wall of the collecting bin is fixedly connected to a spinneret, the inner wall of the coagulation pool is rotatably connected to a stretching wheel via a rotating shaft, the inner wall of the coagulation pool is rotatably connected to a winding wheel via a rotating shaft, and the coagulation pool is equipped with a built-in sensor for monitoring the temperature, pH value and liquid level in the coagulation pool.

[0011] According to the above technical solution, the inner wall of the centrifugal fan is rotatably connected to the outer wall of the reciprocating block through a bearing, the inner wall of the centrifugal fan is slidably connected to the outer wall of the limit sleeve, the guide hole penetrates the outer wall of the stirring wheel and is connected to the inside of the guide groove, the inside of the guide pipe filters tiny impurities in the mixed liquid by setting a filtering module, the guide groove is spirally opened on the outer wall of the stirring wheel, and is used to drive the stirring wheel to rotate through the mixed liquid, the number of the injection ports is two groups, and the two groups of injection ports are symmetrically arranged on both sides of the outer wall of the shell with the center line of the shell as the symmetry axis, the injection port located on the left side of the shell is the input end of the capsaicin derivative, and the injection port located on the right side of the shell is the input end of the casting liquid, and the two groups of injection ports both input materials through metering pumps.

[0012] According to the above technical solution, the outer wall of the reciprocating block is slidably connected to the inner wall of the limiting sleeve, the top of the limiting sleeve is fixedly connected to the inner wall of the shell, the bottom of the rotating disk is rotatably connected to the bottom of the inner wall of the shell through a bearing, the top of the center rod passes through the inner wall of the shell and is fixedly connected to the output end of the motor, and the limiting sleeve is used to guide the reciprocating block and limit the reciprocating block.

[0013] According to the above technical solution, the outer wall of the limit block is slidably connected to the wall of the limit groove, the guide groove is in the shape of an arc groove, which is used to guide the mixed liquid, the guide plate is in the shape of a fan, and the bottom edge is a raised hook, which is used to guide the mixed liquid during the stirring process and bring up the long fibers and short fibers deposited on the bottom of the inner wall of the shell for stirring and dissolving.

[0014] A method for preparing a capsaicin derivative-modified hollow fiber membrane comprises the following steps: S1. Inject the prepared capsaicin derivative and the casting liquid into the shell through the injection port, start the motor, and drive the stirring mechanism through the guide mechanism to stir the mixed liquid.

[0015] S2. During the process of stirring the mixed liquid by the stirring mechanism, the reciprocating mechanism drives the stirring mechanism to make reciprocating motion up and down inside the shell. When the reciprocating mechanism drives the stirring mechanism to move upward, the guide mechanism adheres to the inner wall of the shell to assist in stirring and clean the inner wall of the shell. When the reciprocating mechanism drives the stirring mechanism to move downward to the bottom of the inner wall of the shell, the guide mechanism stirs the short fiber impurities deposited on the bottom of the inner wall of the shell, and guides the mixed liquid at the bottom of the shell into the guide pipe through centrifugal force to filter the short fiber impurities.

[0016] S3. The mixed liquid after stirring is allowed to stand for defoaming, and then is led out from a discharge pipe, enters a collecting bin for pressurization, and is extruded from a spinneret to form a hollow fiber membrane, and then enters a coagulation tank for cooling and coagulation.

[0017] S4. After the central control fiber membrane enters the coagulation tank, the fiber membrane is guided and stretched by the stretching wheel, and the central control fiber membrane that has been cooled and coagulated is collected by the winding wheel.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. The preparation device of the capsaicin derivative modified hollow fiber membrane fully stirs the mixed liquid through a stirring mechanism to make the mixed liquid react fully and avoid waste caused by excessive long fiber generation. At the same time, the long fibers in the mixed liquid are interrupted and dissolved to avoid impurities adhering to the membrane surface during fiber membrane molding to form protrusions and holes, resulting in defects on the fiber membrane surface.

[0019] 2. The preparation device of the capsaicin derivative modified hollow fiber membrane drives the stirring mechanism to perform up and down reciprocating motion through the reciprocating mechanism to prevent the formation of a separation layer during the mixing process, which leads to mixing failure, so that the mixed liquid is fully mixed, the mixing quality of the mixed liquid is increased, and the generation of long fibers in the reaction process is reduced, which affects the quality of the fiber membrane.

[0020] 3. The preparation device of the capsaicin derivative modified hollow fiber membrane guides the mixed liquid through the guide mechanism during the stirring process of the mixed liquid, so that the mixed liquid can be fully filtered to prevent short fibers from remaining in the mixed liquid after the stirring is completed, which will affect the quality of the finished hollow fiber membrane, thereby improving the stability rate of the finished product quality of the fiber membrane preparation device.

[0021] 4. The preparation device of the capsaicin derivative modified hollow fiber membrane stirs the bottom of the mixed liquid through a guide plate to prevent long fibers from being deposited at the bottom of the mixed liquid and unable to be stirred and dissolved. At the same time, the mixed liquid is guided to fully filter the mixed liquid with fibers to prevent the quality of the finished fiber membrane from being affected.

[0022] 5. The preparation method of the capsaicin derivative modified hollow fiber membrane, the casting liquid selects vinylidene fluoride as the raw material, has good mechanical properties and thermal stability, improves the mechanical strength and wear resistance of the hollow fiber membrane, the capsaicin derivative has good hydrophilic groups and antibacterial properties, constructs a stable hydrophilic and antibacterial functional layer on the hollow fiber membrane, improves the membrane flux and gives the membrane high anti-pollution properties, and further improves the mechanical properties of the membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the reciprocating mechanism of the present invention; Figure 4 A cross-sectional view of the reciprocating mechanism of the present invention Figure 1 ; Figure 5A cross-sectional view of the reciprocating mechanism of the present invention Figure 2 ; Figure 6 It is a structural schematic diagram of the stirring mechanism of the present invention; Figure 7 It is a structural schematic diagram of the flow guiding mechanism of the present invention; Figure 8 is a cross-sectional view of the flow guiding mechanism of the present invention; Fig. 9 For the present invention Figure 8 A is an enlarged schematic diagram.

[0024] In the figure: 1. Shell; 101. Injection port; 102. Discharge pipe; 103. Motor; 104. Guide pipe; 105. Collection bin; 106. Spinneret; 107. Coagulation tank; 108. Stretching wheel; 109. Winding wheel; 2. Reciprocating mechanism; 201. Center rod; 202. Limiting sleeve; 203. Circulation groove; 204. Reciprocating block; 205. Rotating disk; 3. Stirring mechanism; 301. Centrifugal fan; 302. Assembly groove; 303. Stirring Wheel; 304, guide hole; 305, guide groove; 306, stirring rod; 4, guide mechanism; 401, telescopic rod; 402, support rod; 403, rotating plate; 404, swing rod; 405, guide plate; 406, guide groove; 407, sliding sleeve; 408, spring 1; 409, guide rod; 410, guide wheel; 411, limit groove 1; 412, limit block; 413, ball head rod; 414, limit groove 2; 415, spring 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] For example, see Figure 1-Figure 2 and Figure 6 The present invention provides a technical solution: a preparation device for a capsaicin derivative modified hollow fiber membrane, comprising a shell 1, a top of the shell 1 is fixedly connected to an injection port 101, a bottom of the shell 1 is fixedly connected to a discharge pipe 102, a top of the shell 1 is fixedly connected to a motor 103, an outer wall of the shell 1 is fixedly connected to a flow guide pipe 104, a reciprocating mechanism 2 is arranged inside the shell 1, and further comprising: The stirring mechanism 3 is arranged inside the shell 1, and the stirring mechanism 3 includes a centrifugal fan 301. The outer wall of the centrifugal fan 301 is provided with a flow guide mechanism 4. The outer wall of the centrifugal fan 301 is provided with a mounting groove 302. The inner wall of the mounting groove 302 is rotatably connected to a stirring wheel 303 through a rotating shaft. The outer wall of the stirring wheel 303 is provided with a guide hole 304. The outer wall of the stirring wheel 303 is provided with a guide groove 305. The outer wall of the stirring wheel 303 is fixedly connected with a stirring rod 306. The centrifugal fan 301 stirs the mixed liquid through centrifugal force. The stirring rod 306 drives the long fibers in the mixed liquid to break and dissolve through the stirring wheel 303. When the preparation device for the capsaicin derivative modified hollow fiber membrane is put into use, the prepared capsaicin derivative and the vinylidene fluoride casting liquid are put into the shell 1 from the injection port 101, and the motor 103 is started. The central rod 201 is driven to rotate by the motor 103, so that the rotating disk 205 drives the flow guide mechanism 4 The centrifugal fan 301 is supported by the flow guide mechanism 4, and the centrifugal fan 301 is driven to rotate inside the shell 1 to stir the mixed liquid. The mixed liquid generates flow force through centrifugation. During the mixing process of the mixed liquid by the centrifugal fan 301, the mixed liquid passes through the guide hole 304 spirally opened on the outer wall of the stirring wheel 303, so that the stirring wheel 303 drives the stirring rod 306 to rotate in the mixed liquid, so that the stirring rod 306 breaks the long fibers in the mixed liquid, and the broken long fibers are dissolved during the mixing process, thereby preventing the mixed liquid from being wasted. After the mixing is completed, the prepared mixed liquid is introduced into the collecting bin 105 through the discharge pipe 102 after standing and defoaming, and the collecting bin 105 is pressurized to extrude the mixed liquid from the spinneret. The extruded fiber membrane is wound and stretched by the stretching wheel 108, and the fiber membrane is introduced into the coagulation tank 107 for coagulation. After the fiber membrane is coagulated, it is wound and collected by the winding wheel 109. The bottom of the shell 1 is fixedly connected to a coagulation tank 107 through a connecting rib, the inner wall of the coagulation tank 107 is fixedly connected to a collecting bin 105, the outer wall of the collecting bin 105 is fixedly connected to a spinneret 106, the inner wall of the coagulation tank 107 is rotatably connected to a stretching wheel 108 through a rotating shaft, the inner wall of the coagulation tank 107 is rotatably connected to a winding wheel 109 through a rotating shaft, the coagulation tank 107 is built with a sensor for monitoring the temperature, pH value and liquid level in the coagulation tank 107, after stirring is completed, the prepared mixed solution is introduced into the collecting bin 105 through a discharge pipe 102 after being allowed to stand and defoam, the collecting bin 105 is pressurized, the mixed solution is extruded from the spinneret, the extruded fiber membrane is wound and stretched by the stretching wheel 108, and the fiber membrane is introduced into the coagulation tank 107 for coagulation, and after the fiber membrane is coagulated, it is wound and collected by the winding wheel 109; The inner wall of the centrifugal fan 301 is rotatably connected to the outer wall of the reciprocating block 204 through a bearing, and the inner wall of the centrifugal fan 301 is slidably connected to the outer wall of the limit sleeve 202. The guide hole 304 penetrates the outer wall of the stirring wheel 303 and is connected to the inside of the guide groove 305. The inside of the guide pipe 104 is provided with a filtering module to filter tiny impurities in the mixed liquid. The guide groove 305 is spirally opened on the outer wall of the stirring wheel 303, and is used to drive the stirring wheel 303 to rotate through the mixed liquid. There are two groups of injection ports 101, and the two groups of injection ports 101 are symmetrically arranged on both sides of the outer wall of the shell 1 with the center line of the shell 1 as the symmetry axis. The injection port 101 on the left side of the shell 1 is the input end of the capsaicin derivative, and the injection port 101 on the right side of the shell 1 is the input end of the casting liquid. The two groups of injection ports 101 are input materials through metering pumps. When the preparation device of the modified hollow fiber membrane is put into use, the prepared capsaicin derivative and vinylidene fluoride casting liquid are put into the shell 1 from the injection port 101, and the motor 103 is started. The central rod 201 is driven to rotate by the motor 103, so that the rotating disk 205 drives the guide mechanism 4 to rotate. The centrifugal fan 301 is supported by the guide mechanism 4, and the centrifugal fan 301 is driven to rotate inside the shell 1 to stir the mixed liquid. The mixed liquid generates flow force through centrifugation. During the stirring process of the mixed liquid by the centrifugal fan 301, the mixed liquid passes through the guide hole 304 spirally opened on the outer wall of the stirring wheel 303, so that the stirring wheel 303 drives the stirring rod 306 to rotate in the mixed liquid, so that the stirring rod 306 breaks the long fibers in the mixed liquid, and the broken long fibers are dissolved during the stirring process, thereby preventing waste of the mixed liquid.

[0027] Example 2, based on Example 1, please refer to Figure 3-Figure 5 The present invention provides a technical solution: the reciprocating mechanism 2 includes a center rod 201, the outer wall of the center rod 201 is rotatably connected to the limiting sleeve 202 through a bearing, a circulation groove 203 is opened on the outer wall of the center rod 201, and the groove wall of the circulation groove 203 is slidably connected to a reciprocating block 204 through a slider, the bottom of the center rod 201 passes through the limiting sleeve 202 and is fixedly connected to the top of the rotating disk 205, and the reciprocating block 204 is used to drive the centrifugal fan 301 to reciprocate up and down. During the rotation of the centrifugal fan 301, the center rod 201 rotates on the inner wall of the reciprocating block 204, and the reciprocating block 204 slides on the inner wall of the circulation groove 203 through the slider, and is guided by the limiting sleeve 202, so that the reciprocating block 204 slides on the inner wall of the limiting sleeve 202, and drives the centrifugal fan 301 to slide up and down on the outer wall of the limiting sleeve 202 to stir the mixed liquid; The outer wall of the reciprocating block 204 is slidably connected to the inner wall of the limiting sleeve 202, the top of the limiting sleeve 202 is fixedly connected to the inner wall of the shell 1, the bottom of the rotating disk 205 is rotatably connected to the bottom of the inner wall of the shell 1 through a bearing, the top of the center rod 201 passes through the inner wall of the shell 1 and is fixedly connected to the output end of the motor 103, the limiting sleeve 202 is used to guide the reciprocating block 204 and limit the reciprocating block 204, the reciprocating block 204 rotates through the center rod 201, so that the reciprocating block 204 slides on the inner wall of the circulation groove 203 through the slider, and is guided by the limiting sleeve 202, so that the reciprocating block 204 slides on the inner wall of the limiting sleeve 202.

[0028] Example 3, based on Example 1 and Example 2, please refer to Figure 7-Figure 9The present invention provides a technical solution: the air guide mechanism 4 includes a telescopic rod 401, the telescopic rod 401 is fixedly connected to the outer wall of the centrifugal fan 301 at one end close to the centrifugal fan 301, the outer wall of the telescopic rod 401 is fixedly connected to a support rod 402, the outer wall of the support rod 402 is connected to a rotating plate 403 through a bearing hinge, the top of the rotating plate 403 is rotatably connected to a guide wheel 410 through a rotating shaft, the bottom of the outer wall of the rotating plate 403 is connected to a swing rod 404 through a rotating shaft hinge, the inner wall of the swing rod 404 is covered with a ball head rod 413, the outer wall of the ball head rod 413 is fixedly connected to a sliding sleeve 407, the inner wall of the sliding sleeve 407 is slidably connected to a guide rod 409, and the guide rod 409 is connected to the rotating disk 205 at one end close to the rotating disk 205 The outer wall of the disk 205 is fixedly connected, and the outer wall of the sliding sleeve 407 is fixedly connected with a spring 408, and the other end of the spring 408 is fixedly connected to the outer wall of the rotating plate 403. The outer wall of the guide wheel 410 rolls along the inner wall of the shell 1. The motor 103 drives the rotating disk 205 to rotate at the bottom of the inner wall of the shell 1 through the central rod 201, so that the rotating disk 205 drives the guide rod 409 to rotate on the inner wall of the shell 1. When the reciprocating block 204 drives the centrifugal fan 301 to slide upward in the limiting sleeve 202, the telescopic rod 401 squeezes the support rod 402, drives the rotating plate 403 to drive the guide wheel 410 to contact the inner wall of the shell 1 and roll along the inner wall of the shell 1. At the same time, the spring 408 squeezes the sliding sleeve 407 to slide on the guide outer wall, so that the pendulum 204 drives the centrifugal fan 301 to slide upward in the limiting sleeve 202. The movable rod 404 is supported by the ball head rod 413, so that the swing rod 404 drives the guide to swing toward the inner wall of the shell 1. During the swinging process of the swing rod 404, the limit block 412 slides on the inner wall of the limit groove to limit the rotating plate 403, so that the rotating plate 403 is vertical, and the swing rod 404 is vertical at the same time. At the same time, the guide plate 405 is squeezed by the spring 2 415, so that the guide plate 405 contacts the inner wall of the shell 1, and the long fibers attached to the inner wall of the shell 1 are scraped and cleaned. When the reciprocating block 204 drives the centrifugal fan 301 to slide downward, the guide wheel 410 rolls along the conical surface on the inner wall of the shell 1, so that the guide wheel 410 drives the support rod 402 to squeeze the telescopic rod 401 through the rotating plate 403, so that the telescopic rod 401 During the process of centrifugal fan 301 driving telescopic rod 401 to descend, rotating plate 403 drives sliding sleeve 407 to squeeze spring 1 408 to slide on the outer wall of guide rod 409 through swing rod 404, and rotating plate 403 rotates on the outer wall of support rod 402 to tilt swing rod 404, and guide plate 405 is squeezed and contacts with the bottom of inner wall of shell 1 through spring 2 415, so that guide plate 405 scrapes and cleans the long fibers attached to the bottom of inner wall of shell 1, and the long fibers are guided by guide groove 406, enter guide pipe 104 with mixed liquid through centrifugation, and the long fibers and short fibers in the mixed liquid are filtered by the filtering device arranged inside guide pipe 104, so that the mixed liquid is fully filtered; The inner wall of the rotating plate 403 is provided with a limiting groove 1 411, the outer wall of the support rod 402 is fixedly connected to the limiting block 412, the inner wall of the swing rod 404 is connected to the guide plate 405 through the rotating shaft hinge, the inner wall of the guide plate 405 is provided with a guide groove 406, the inner wall of the guide plate 405 is provided with a limiting groove 2 414, the groove wall of the limiting groove 2 414 is fixedly connected with a spring 2 415, the guide plate 405 is used to guide the mixed liquid, and the guide groove 406 is used to guide the short fiber impurities in the mixed liquid. When the reciprocating block 204 drives the centrifugal fan 301 to slide upward in the limiting sleeve 202, the swing rod 404 swings and drives the guide plate 405 is vertical, and is squeezed by the second spring 415, so that the guide plate 405 contacts the inner wall of the shell 1, and the long fibers attached to the inner wall of the shell 1 are scraped and cleaned. When the reciprocating block 204 drives the centrifugal fan 301 to slide downward, the swing rod 404 tilts, and the guide plate 405 contacts the bottom of the inner wall of the shell 1 through the squeezing of the second spring 415, so that the guide plate 405 scrapes and cleans the long fibers attached to the bottom of the inner wall of the shell 1. The long fibers are guided by the guide groove 406, and enter the guide pipe 104 at the same time as the mixed liquid through centrifugation, and the long fibers and the short fibers in the mixed liquid are filtered by the filtering device arranged inside the guide pipe 104; The outer wall of the limit block 412 is slidably connected with the wall of the limit groove 1 411. The guide groove 406 is in the shape of an arc groove, which is used to guide the mixed liquid. The guide plate 405 is in the shape of a fan, and the bottom edge is a raised hook, which is used to guide the mixed liquid during the stirring process and bring up the long fibers and short fibers deposited on the bottom of the inner wall of the shell 1 for stirring and dissolving. When the reciprocating block 204 drives the centrifugal fan 301 to slide upward in the limit sleeve 202, the swing rod 404 swings and drives the guide plate 405 to be vertical, and is squeezed by the spring 2 415 to make the guide plate 4 05 contacts the inner wall of the shell 1 to scrape and clean the long fibers attached to the inner wall of the shell 1. When the reciprocating block 204 drives the centrifugal fan 301 to slide downward, the swing rod 404 tilts, and the guide plate 405 is squeezed and contacts the bottom of the inner wall of the shell 1 by the spring 2 415, so that the guide plate 405 scrapes and cleans the long fibers attached to the bottom of the inner wall of the shell 1. The long fibers are guided by the guide groove 406, enter the guide pipe 104 at the same time as the mixed liquid through centrifugation, and the long fibers and the short fibers in the mixed liquid are filtered by the filtering device arranged inside the guide pipe 104.

[0029] A method for preparing a capsaicin derivative-modified hollow fiber membrane comprises the following steps: S1. Inject the prepared capsaicin derivative and the casting solution into the housing 1 through the injection port 101, start the motor 103, and drive the stirring mechanism 3 to stir the mixed solution through the flow guide mechanism 4.

[0030] S2. During the process of stirring the mixed liquid by the stirring mechanism 3, the reciprocating mechanism 2 drives the stirring mechanism 3 to make reciprocating motion up and down inside the shell 1. When the reciprocating mechanism 2 drives the stirring mechanism 3 to move upward, the guide mechanism 4 adheres to the inner wall of the shell 1 to assist in stirring and clean the inner wall of the shell 1. When the reciprocating mechanism 2 drives the stirring mechanism 3 to move downward to the bottom of the inner wall of the shell 1, the guide mechanism 4 stirs the short fiber impurities deposited on the bottom of the inner wall of the shell 1, and guides the mixed liquid at the bottom of the shell 1 to the guide pipe 104 through centrifugal force to filter the short fiber impurities.

[0031] S3. The mixed solution after stirring is allowed to stand for defoaming, then drawn out from the discharge pipe 102, enters the collecting bin 105 for pressurization, and is extruded from the spinneret 106 to form a hollow fiber membrane, and enters the coagulation tank 107 for cooling and coagulation.

[0032] S4, after the central control fiber membrane enters the coagulation tank 107, the fiber membrane is guided and stretched by the stretching wheel 108, and the central control fiber membrane that has been cooled and coagulated is collected by the winding wheel 109.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing a capsaicin derivative-modified hollow fiber membrane, comprising a housing (1), wherein the top of the housing (1) is fixedly connected to an injection port (101), the bottom of the housing (1) is fixedly connected to a discharge pipe (102), and the top of the housing (1) is fixedly connected to a motor (103), characterized in that: The outer wall of the shell (1) is fixedly connected to a flow guide pipe (104), a reciprocating mechanism (2) is arranged inside the shell (1), and further comprises: A stirring mechanism (3), the stirring mechanism (3) being arranged inside the housing (1), the stirring mechanism (3) comprising a centrifugal fan (301), the outer wall of the centrifugal fan (301) being provided with a flow guide mechanism (4), the outer wall of the centrifugal fan (301) being provided with a mounting groove (302), the inner wall of the mounting groove (302) being rotatably connected to a stirring wheel (303) via a rotating shaft, the outer wall of the stirring wheel (303) being provided with a guide hole (304), the outer wall of the stirring wheel (303) being provided with a guide groove (305), the outer wall of the stirring wheel (303) being fixedly connected to a stirring rod (306), the centrifugal fan (301) stirring the mixed liquid by centrifugal force, the stirring rod (306) driving the long fibers in the mixed liquid to be broken and dissolved through the stirring wheel (303).

2. The device for preparing a capsaicin derivative modified hollow fiber membrane according to claim 1, characterized in that: The reciprocating mechanism (2) comprises a center rod (201), the outer wall of the center rod (201) being rotatably connected to a limiting sleeve (202) via a bearing, the outer wall of the center rod (201) being provided with a circulation groove (203), the groove wall of the circulation groove (203) being slidably connected to a reciprocating block (204) via a slider, the bottom of the center rod (201) passing through the limiting sleeve (202) and being fixedly connected to the top of a rotating disk (205), and the reciprocating block (204) being used to drive the centrifugal fan (301) to perform up and down reciprocating motion.

3. The device for preparing a capsaicin derivative modified hollow fiber membrane according to claim 1, characterized in that: The flow guiding mechanism (4) comprises a telescopic rod (401), one end of the telescopic rod (401) close to the centrifugal fan (301) is fixedly connected to the outer wall of the centrifugal fan (301), the outer wall of the telescopic rod (401) is fixedly connected to a support rod (402), the outer wall of the support rod (402) is connected to a rotating plate (403) via a bearing hinge, the top of the rotating plate (403) is rotatably connected to a guide wheel (410) via a rotating shaft, the bottom of the outer wall of the rotating plate (403) is connected to a swing rod (404) via a rotating shaft hinge, and the swing rod (404) is connected to the outer wall of the centrifugal fan (301) via a rotating shaft hinge. 4) The inner wall is covered and connected with a ball head rod (413), the outer wall of the ball head rod (413) is fixedly connected with a sliding sleeve (407), the inner wall of the sliding sleeve (407) is slidably connected with a guide rod (409), one end of the guide rod (409) close to the rotating disk (205) is fixedly connected to the outer wall of the rotating disk (205), the outer wall of the sliding sleeve (407) is fixedly connected with a spring 1 (408), the other end of the spring 1 (408) is fixedly connected to the outer wall of the rotating plate (403), and the outer wall of the guide wheel (410) rolls along the inner wall of the shell (1).

4. The device for preparing a capsaicin derivative modified hollow fiber membrane according to claim 3, characterized in that: The inner wall of the rotating plate (403) is provided with a first limiting groove (411), the outer wall of the supporting rod (402) is fixedly connected to a limiting block (412), the inner wall of the swing rod (404) is connected to a guide plate (405) via a rotating shaft hinge, the inner wall of the guide plate (405) is provided with a guide groove (406), the inner wall of the guide plate (405) is provided with a second limiting groove (414), the groove wall of the second limiting groove (414) is fixedly connected to a second spring (415), the guide plate (405) is used to guide the mixed liquid, and the guide groove (406) is used to guide short fiber impurities in the mixed liquid.

5. The device for preparing a capsaicin derivative modified hollow fiber membrane according to claim 1, characterized in that: The bottom of the shell (1) is fixedly connected to a coagulation pool (107) via a connecting rib, the inner wall of the coagulation pool (107) is fixedly connected to a collecting chamber (105), the outer wall of the collecting chamber (105) is fixedly connected to a spinneret (106), the inner wall of the coagulation pool (107) is rotatably connected to a stretching wheel (108) via a rotating shaft, the inner wall of the coagulation pool (107) is rotatably connected to a winding wheel (109) via a rotating shaft, and the coagulation pool (107) has a built-in sensor for monitoring the temperature, pH value and liquid level in the coagulation pool (107).

6. The device for preparing a capsaicin derivative-modified hollow fiber membrane according to claim 1, characterized in that: The inner wall of the centrifugal fan (301) is rotatably connected to the outer wall of the reciprocating block (204) through a bearing, and the inner wall of the centrifugal fan (301) is slidably connected to the outer wall of the limit sleeve (202). The guide hole (304) penetrates the outer wall of the stirring wheel (303) and is connected to the inside of the guide groove (305). The inside of the guide pipe (104) is provided with a filtering module to filter tiny impurities in the mixed liquid. The guide groove (305) is spirally opened on the outer wall of the stirring wheel (303) and is used to drive the stirring wheel (303) to rotate through the mixed liquid. The number of the injection ports (101) is two groups. The two groups of injection ports (101) are symmetrically arranged on both sides of the outer wall of the shell (1) with the center line of the shell (1) as the symmetry axis. The injection port (101) located on the left side of the shell (1) is an input end of the capsaicin derivative, and the injection port (101) located on the right side of the shell (1) is an input end of the casting liquid. The two groups of injection ports (101) are both input with materials through metering pumps.

7. The device for preparing a capsaicin derivative-modified hollow fiber membrane according to claim 2, characterized in that: The outer wall of the reciprocating block (204) is slidably connected to the inner wall of the limiting sleeve (202); the top of the limiting sleeve (202) is fixedly connected to the inner wall of the shell (1); the bottom of the rotating disk (205) is rotatably connected to the bottom of the inner wall of the shell (1) via a bearing; the top of the center rod (201) passes through the inner wall of the shell (1) and is fixedly connected to the output end of the motor (103); the limiting sleeve (202) is used to guide the reciprocating block (204) and to limit the reciprocating block (204).

8. The device for preparing a capsaicin derivative-modified hollow fiber membrane according to claim 4, characterized in that: The outer wall of the limit block (412) is slidably connected to the wall of the limit groove 1 (411); the guide groove (406) is in the shape of an arc groove and is used to guide the mixed liquid; the guide plate (405) is in the shape of a fan and has a raised hook at the bottom edge, which is used to guide the mixed liquid during the stirring process and to bring up the long fibers and short fibers deposited on the bottom of the inner wall of the shell (1) for stirring and dissolving.

9. The method for preparing a capsaicin derivative modified hollow fiber membrane according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, injecting the prepared capsaicin derivative and the casting solution into the housing (1) through the injection port (101), starting the motor (103), and causing the motor (103) to drive the stirring mechanism (3) to stir the mixed solution through the flow guide mechanism (4); S2, during the process of stirring the mixed liquid by the stirring mechanism (3), the reciprocating mechanism (2) drives the stirring mechanism (3) to make an upward and downward reciprocating motion inside the shell (1); when the reciprocating mechanism (2) drives the stirring mechanism (3) to move upward, the flow guiding mechanism (4) is in contact with the inner wall of the shell (1) to assist in stirring and clean the inner wall of the shell (1); when the reciprocating mechanism (2) drives the stirring mechanism (3) to move downward to the bottom of the inner wall of the shell (1), the flow guiding mechanism (4) stirs the short fiber impurities deposited on the bottom of the inner wall of the shell (1), and guides the mixed liquid at the bottom of the inner wall of the shell (1) to the flow guiding pipe (104) through centrifugal force to filter the short fiber impurities; S3, the mixed liquid after stirring is allowed to stand for defoaming, then drawn out from the discharge pipe (102), enters the collection chamber (105) for pressurization, and is extruded from the spinneret (106) to form a hollow fiber membrane, and enters the coagulation tank (107) for cooling and coagulation; S4. After the central control fiber membrane enters the coagulation tank (107), the fiber membrane is guided and stretched by the stretching wheel (108), and the central control fiber membrane that has been cooled and coagulated is collected by the winding wheel (109).

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