An environmentally friendly fiber material preparation device based on enteromorpha material

Abstract

The application relates to the technical field of fiber preparation, in particular to an environment-friendly fiber material preparation device based on Enteromorpha prolifera raw materials, which comprises a first water cooling tank, a second water cooling tank and a traction winding part, a material box is fixedly installed in the first water cooling tank, a spinneret is arranged on one side of the material box, a water pipe is connected between the spinneret and the material box, a speed regulating motor is fixedly installed at the top of the material box, a transmission shaft is installed at the output end of the speed regulating motor, a stirring assembly and a defoaming assembly are installed on the transmission shaft, a spur gear is installed at one end of the transmission shaft, a reflux tank is eccentrically installed at the bottom of the material box, an internal gear is rotatably installed in the reflux tank, the reflux tank is sealingly connected with the material box through a first reflux pipe and a second reflux pipe, the second reflux pipe is connected with a third reflux pipe and a feeding pipe through a three-way valve, the spinning solution is first put into an internal large circulation mode before being fed, and the spinning solution is effectively improved to a high cleanliness state before being spun through a circulating defoaming path formed by the first reflux pipe, the second reflux pipe and the third reflux pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fiber preparation, in particular to an environmentally friendly fiber material preparation device based on Enteromorpha raw materials. BACKGROUND

[0002] With the increasing awareness of sustainable development and environmental protection worldwide, developing renewable and biodegradable environmentally friendly materials has become an important research direction in the field of material science. Traditional synthetic fibers mainly rely on non-renewable petroleum resources, and their production process has high energy consumption and large carbon emissions, and they are difficult to naturally degrade after being discarded, causing serious burden to the ecological environment. Therefore, using natural biomass resources to prepare environmentally friendly fiber materials not only helps to reduce dependence on fossil resources, but also effectively reduces environmental pollution, and has important economic and social value.

[0003] Enteromorpha is a large green algae widely distributed in coastal waters. It grows rapidly and has strong reproductive ability, and under suitable conditions, it can easily form a large-scale "green tide", causing negative impacts on marine ecosystems and coastal economic activities. However, Enteromorpha is rich in organic components such as polysaccharides, proteins, and cellulose, especially the natural cellulose in its cell wall, which has good renewability and biodegradability, making it a very potential biomass raw material.

[0004] Currently, the mainstream preparation process of regenerated cellulose fibers mainly includes viscose and solvent method. Solvent method is the main technical path for the preparation of environmentally friendly fibers at present, but air is easily entrained during the stirring process of high-viscosity spinning solution, forming micro-bubbles. If not effectively removed, it will cause broken filaments, hair filaments or internal holes in the fiber during the spinning process, affecting product quality. SUMMARY

[0005] The present application relates to the technical field of fiber preparation, in particular to an environmentally friendly fiber material preparation device based on Enteromorpha raw materials.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The utility model provides a kind of environmentally friendly fiber material preparation device based on Enteromorpha material, including first water cooling tank, second water cooling tank and traction winding part, fixedly installed with material box in the first water cooling tank, one side of the material box is provided with spinneret, spinneret is equipped with spinning channel, water pipe is connected between the spinneret and material box, speed regulating motor is fixedly installed on the material box top, the output end of speed regulating motor penetrates into material box and is installed with transmission shaft by coupling, stirring assembly and defoaming assembly are installed on the transmission shaft, spur gear is fixedly installed on the one end of transmission shaft and penetrates out of material box, reflux box is eccentrically installed on the material box bottom, inner gear wheel is rotatably installed in the reflux box, first reflux pipe and second reflux pipe are sealingly connected between the reflux box and material box, the extension direction of first reflux pipe and second reflux pipe is perpendicular to each other, third reflux pipe and feed pipe are installed to the second reflux pipe by three-way valve.

[0008] Preferably, the spinning channel includes a counterbore and a slot hole, the counterbore and the slot hole are through, the slot hole is installed with a spinneret, the spinneret is installed on the hole face of the counterbore by bolts, and the spinneret is provided with an extrusion channel.

[0009] Preferably, a gasket is installed between the spinneret and the hole face of the counterbore.

[0010] Preferably, a partition is fixedly installed in the spinneret, the spinning channel and the water pipe are located on both sides of the partition respectively, and a flexible pipe is installed on the side of the spinneret away from the material box.

[0011] Preferably, the partition is provided with double layers, a discharge cavity is formed between the double layers of the partition, a discharge hole is formed on the side of the spinneret close to the material box, a discharge pipe is connected between the discharge hole and the third reflux pipe, a pressure relief channel is formed on the hole wall of the counterbore and communicates with the discharge cavity, pressure relief plates are rotatably installed in the pressure relief channel, an installation groove is formed on the side wall of the pressure relief channel, connecting pins are fixedly installed on both ends of the pressure relief plates, the connecting pins are rotatably installed in the installation groove, a first torsional spring is sleeved on the connecting pins, and both ends of the first torsional spring are fixed with the pressure relief plates and the inner side of the installation groove respectively.

[0012] Preferably, the material box includes an outer sleeve and an inner sleeve, and an oil pipe is installed between the outer sleeve and the inner sleeve.

[0013] Preferably, the stirring assembly comprises a stirring paddle rotatably mounted on the transmission shaft, an adjusting gear is fixedly mounted on one end of the stirring paddle inside the transmission shaft, a sliding ring is rotatably mounted on the bottom of the material box, and a scraper is mounted on the sliding ring; a first inclined groove is formed in the sliding ring, a driving rod is fixedly mounted on the transmission shaft, a first wedge block is rotatably mounted on one end of the driving rod close to the sliding ring through a second torsional spring, a rack is slidably mounted in the transmission shaft, a rope groove is formed in the driving rod and a pull rope is arranged in the rope groove, and two ends of the pull rope are fixedly connected with the first wedge block and the rack respectively; wherein a first spring is arranged between the rack and the bottom surface of the transmission shaft.

[0014] Preferably, a sliding groove is formed in the bottom surface of the sliding ring, a second wedge block is slidably mounted in the sliding groove, a limiting block is fixedly mounted on the bottom of the material box, and the limiting block has an inclined surface; wherein a second spring is fixedly connected between the second wedge block and the top surface of the groove.

[0015] Preferably, the defoaming assembly comprises a defoaming box mounted in the material box, the defoaming box is coaxial with the transmission shaft, a grid is fixedly mounted in the defoaming box, a fan blade is mounted on the transmission shaft in the defoaming box, and a liquid outlet pipe is fixedly mounted on the bottom surface of the defoaming box.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. By arranging the reflux box, the spinning solution is first put into the internal circulation mode before being supplied, and is effectively improved to a high cleanliness state before being jetted through the circulation defoaming path formed by the first reflux pipe, the second reflux pipe and the third reflux pipe, so that the existence of internal holes of the fiber is reduced, when switching to the supply mode, the third reflux pipe is closed and the feeding pipe is opened, so that the material liquid is directionally transported to the spinneret under the driving of the planetary reflux power.

[0018] 2. By adjusting the rotating direction of the speed regulating motor, the stirring paddle is automatically adjusted to a large inclination angle or rotated to a small inclination angle, so that the self-adaptive switching of the dissolving and defoaming modes is realized, and the air bubbles caused by the improper paddle angle in the low speed stage are effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0020] Figure 2 It is a schematic diagram of the material box structure of the present application;

[0021] Figure 3 It is a schematic diagram of the spinneret structure of the present application;

[0022] Figure 4 It is a schematic diagram of the jet channel structure of the present application;

[0023] Figure 5 Schematic diagram of pressure relief channel structure of the present application;

[0024] Figure 6 Schematic diagram of return box structure of the present application;

[0025] Figure 7 Schematic diagram of transmission shaft internal structure of the present application;

[0026] Figure 8 Schematic diagram of the present application Figure 6 Enlarged view of A structure;

[0027] Figure 9 Schematic diagram of slip ring internal structure of the present application;

[0028] Figure 10 Schematic diagram of defoaming assembly structure of the present application.

[0029] In the drawings, the components represented by each reference numeral are listed as follows:

[0030] 1, first water cooling tank; 2, second water cooling tank; 3, traction winding part;

[0031] 4, material box; 401, outer sleeve; 402, inner sleeve; 403, oil pipe; 404, limiting block;

[0032] 5, spinneret; 501, spinning channel; 502, counterbore; 503, slot; 504, partition; 505, discharge cavity; 506, discharge hole; 507, discharge pipe; 508, pressure relief channel; 509, pressure relief plate; 510, mounting groove; 511, connecting pin; 512, first torsional spring;

[0033] 6, water pipe; 7, speed regulation motor; 8, transmission shaft;

[0034] 9, stirring assembly; 901, stirring paddle; 902, adjusting gear; 903, slip ring; 904, first inclined slot; 905, driving rod; 906, second torsional spring; 907, first wedge-shaped block; 908, rope groove; 909, pull rope; 910, first spring; 911, sliding groove; 912, second wedge-shaped block; 913, second spring; 914, scraper;

[0035] 10, defoaming assembly; 1001, defoaming box; 1002, grid; 1003, fan blade; 1004, liquid outlet pipe;

[0036] 11, spur gear; 12, return box; 13, internal gear; 14, first return pipe; 15, second return pipe; 16, three-way valve; 17, third return pipe; 18, feeding pipe;

[0037] 19, spinneret; 1901, extrusion channel;

[0038] 20, gasket; 21, flexible tube; 22, rack. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0040] Embodiment one: refer to Figure 1 - Figure 10 An environment-friendly fiber material preparation device based on Enteromorpha material, comprising a first water cooling tank 1, a second water cooling tank 2 and a traction winding part 3, the first water cooling tank 1 and the second water cooling tank 2 are used for gradient cooling and solidification of nascent fibers after spinning, the traction winding part 3 is arranged downstream of the second water cooling tank 2 and is used for traction, drying and winding of the formed fibers, a material box 4 is fixedly installed in the first water cooling tank 1, the material box 4 is a double-layer structure comprising an outer sleeve 401 and an inner sleeve 402, the inner sleeve 402 is used for containing a mixed solution of Enteromorpha cellulose and solvent, an oil pipe 403 is installed between the outer sleeve 401 and the inner sleeve 402, the oil pipe 403 is spirally wound between the outer sleeve 401 and the inner sleeve 402 and is used for passing in heat-conducting oil to heat the inside of the inner sleeve 402, a spinneret 5 is arranged on one side of the material box 4, a spinning channel 501 is formed in the spinneret 5 and is used for extruding the spinning solution into the first water cooling tank 1 in the form of a thin stream, a water pipe 6 is connected between the spinneret 5 and the material box 4, the water pipe 6 exchanges heat between the outer sleeve 401 and the inner sleeve 402, the temperature after heat exchange is fifty to seventy degrees Celsius, the slow setting effect of the spinning solution is realized, and the skin-core structure defect of the fibers is avoided, a speed regulating motor 7 is fixedly installed at the top of the material box 4, an output end of the speed regulating motor 7 penetrates into the material box 4 and is connected with a vertically arranged transmission shaft 8 through a shaft coupling, a stirring assembly 9 and a defoaming assembly 10 are installed on the transmission shaft 8, one end of the transmission shaft 8 penetrates out of the material box 4 and is fixedly installed with a spur gear 11, a reflux box 12 is eccentrically installed at the bottom of the material box 4, the inside of the reflux box 12 is an annular cavity, an internal gear 13 engaged with the spur gear 11 is rotatably installed in the reflux box 12, when the transmission shaft 8 rotates, the spur gear 11 revolves to drive the internal gear 13 to counter-rotate in the reflux box 12, fluid suction and pushing actions are formed, the first reflux pipe 14 and the second reflux pipe 15 are sealingly connected between the reflux box 12 and the material box 4, the extension directions of the first reflux pipe 14 and the second reflux pipe 15 are perpendicular to each other, the second reflux pipe 15 is connected with a third reflux pipe 17 and a feeding pipe 18 through a three-way valve 16, the mixed solution in the third reflux pipe 17 returns to the upper part of the material box 4 to form internal circulation, the feeding pipe 18 leads to the spinneret 5 and is used for conveying the purified spinning solution to the spinning channel 501.

[0041] It should be noted that the three-way valve 16 is integrated with two one-way valves inside, which respectively control the liquid flow direction. When the three-way valve 16 is switched to the circulation mode, the one-way valve opens the third return pipe 17 and closes the feed pipe 18, realizing the closed-loop circulation of the mixed liquid between the tank 4 and the return tank 12. When switched to the feed mode, the third return pipe 17 is closed and the feed pipe 18 is opened, so that the material liquid is directionally transported to the spinneret 5 under the driving of the planetary return flow.

[0042] Further, the spinning channel 501 includes a counterbore 502 and a slot hole 503. In particular, the cross section of the counterbore 502 is stepped, and the counterbore 502 and the slot hole 503 are through, constituting a complete through-hole channel. The slot hole 503 is provided with a spinning head 19, which is a detachable independent component. The spinning head 19 is installed on the hole face of the counterbore 502 by bolts, realizing the axial compression and radial positioning of the spinning head 19. A gasket 20 is installed between the spinning head 19 and the hole face of the counterbore 502, which plays a sealing, buffering and anti-leakage role, preventing high-pressure spinning liquid from seeping out from the connection interface between the spinning head 19 and the spinning plate 5, while compensating for the processing error and ensuring the sealing reliability. An extrusion channel 1901 is provided in the spinning head 19, which is used to extrude the spinning liquid in the form of a stable fine stream.

[0043] Referring to Figure 3 Figure 5 A metal sheet structure baffle 504 is fixedly installed in the spinning plate 5, and the spinning channel 501 and the water pipe 6 are respectively located on both sides of the baffle 504. One side is used to accommodate the spinning channel 501 and the spinning liquid flow path, and the other side is used to arrange the cooling water channel. The spinning plate 5 is provided with a flexible pipe 21 on the side away from the tank 4, which can change the spraying angle to achieve the best cooling working condition. Further, the baffle 504 is provided with a double layer, and a discharge cavity 505 is formed between the double-layer baffles 504. A discharge hole 506 is provided on the side of the spinning plate 5 close to the tank 4. A discharge pipe 507 is connected between the discharge hole 506 and the third return pipe 17, constituting an abnormal material discharge path for discharging residual liquid when the pressure is abnormal. A pressure relief channel 508 is provided on the hole wall of the counterbore 502, which is connected with the discharge cavity 505. Symmetrically arranged pressure relief plates 509 are rotatably installed in the pressure relief channel 508. The pressure relief plates 509 are normally closed to form a sealing surface. An installation groove 510 is provided on the side wall of the pressure relief channel 508. Connection pins 511 are fixedly installed at both ends of the pressure relief plates 509. The connection pins 511 are rotatably installed in the installation groove 510. A first torsional spring 512 is sleeved on the connection pin 511. The two ends of the first torsional spring 512 are respectively fixed to the pressure relief plates 509 and the inner side of the installation groove 510. The first torsional spring 512 provides a pre-tightening force, so that the two pressure relief plates 509 remain closed when there is no external pressure, sealing the pressure relief channel 508.

[0044] ​Embodiment two: the device for preparing the environmentally friendly fiber material based on Enteromorpha prolifera raw material provided in embodiment one is further optimized, referring to Figure 1 and Figure 10 The stirring assembly 9 comprises stirring paddles 901 rotatably mounted on the transmission shaft 8. Specifically, the number of the stirring paddles 901 is two to four, which are uniformly distributed in the circumferential direction and rotatably mounted on the transmission shaft 8 through a hinge shaft. One end of the stirring paddle 901 located in the transmission shaft 8 is fixedly mounted with an adjusting gear 902. The bottom of the material box 4 is rotatably mounted with a sliding ring 903, which can slide in the circumferential direction around the axis of the transmission shaft 8. The sliding ring 903 is provided with a first inclined groove 904. The first inclined groove 904 is arranged obliquely along the circumferential direction of the sliding ring 903. The transmission shaft 8 is fixedly mounted with a driving rod 905. One end of the driving rod 905 close to the sliding ring 903 is rotatably mounted with a first wedge block 907 through a second torsional spring 906, so that the first wedge block 907 can swing around the end of the driving rod 905. The transmission shaft 8 is slidably mounted with a rack 22 which can move up and down. The driving rod 905 is provided with a rope groove 908 and is penetrated by a pull rope 909. The two ends of the pull rope 909 are fixedly connected with the first wedge block 907 and the rack 22, respectively. Further, the first spring 910 is mounted between the rack 22 and the bottom surface of the transmission shaft 8. When the first wedge block 907 swings, the rack 22 moves up and down through the pull rope 909. The first spring 910 is used to push the rack 22 to reset upward.

[0045] The bottom surface of the sliding ring 903 is provided with a sliding groove 911 which is a linear guide groove. The sliding groove 911 is slidably mounted with a second wedge block 912. The bottom of the material box 4 is fixedly mounted with a limiting block 404 which has an inclined surface for pushing the second wedge block 912 to a specific position. The second wedge block 912 is fixedly connected with the second spring 913 between the top surface of the groove of the sliding groove 911 and the second wedge block 912.

[0046] In the high-speed dissolving stage, the speed regulating motor 7 is started and runs at high speed. The transmission shaft 8 drives the driving rod 905 to rotate at high speed. The inclined surface of the first wedge block 907 is in contact with the first inclined groove 904 of the sliding ring 903. The first wedge block 907 rotates around the end of the driving rod 905 by overcoming the elastic force of the second torsional spring 906. The rack 22 is pulled downward through the pull rope 909, and the first spring 910 is compressed. The rack 22 moves downward and engages with the adjusting gear 902 at the end of each stirring paddle 901 to drive it to rotate. The adjusting gear 902 drives the stirring paddle 901 to rotate around the hinge shaft, so that the blade angle of the stirring paddle 901 is adjusted to a large angle state of thirty to forty-five degrees. At this time, the stirring paddle 901 generates strong axial flow and high shear, which promotes the rapid dissolution of Enteromorpha prolifera cellulose.

[0047] In the low-speed defoaming stage, the speed regulating motor 7 rotates reversely, the horizontal surface of the first wedge-shaped block 907 contacts the first inclined groove 904 of the slip ring 903, the pull rope 909 is relaxed, the first spring 910 pushes the rack 22 to reset upward, the rack 22 reversely drives the adjusting gear 902, and the stirring paddle 901 is rotated to a small inclination angle of zero to ten degrees or a near-horizontal state. At the same time, under the low-speed rotation, the slip ring 903 slowly rotates under the driving of the driving rod 905, and the scraper 914 installed on the slip ring 903 scrapes the mixed liquid on the inner wall of the tank 4, reducing the residue.

[0048] The defoaming assembly 10 comprises a defoaming box 1001 installed in the tank 4, the defoaming box 1001 is coaxial with the transmission shaft 8, ensuring the symmetry of the flow field and the stable operation, the defoaming box 1001 is fixedly installed with a grid 1002 inside, the transmission shaft 8 located in the defoaming box 1001 is installed with a fan blade 1003, and the bottom surface of the defoaming box 1001 is fixedly installed with a liquid outlet pipe 1004. The fan blade 1003 rotates with the transmission shaft 8 to suck in the bubble froth, which is broken under the collision, cutting and coalescence after passing through the grid 1002, the broken gas floats to the top of the defoaming box 1001 and escapes, and the liquid is discharged through the liquid outlet pipe 1004 under the driving of gravity and flow, the defoamed liquid reenters the main cavity of the tank 4 to complete the purification cycle.

[0049] Working principle: the cellulose mixed liquid is delivered into the tank 4, the heat conducting oil heats the internal temperature of the tank 4 through the oil pipe 403, the speed regulating motor 7 drives the vertical transmission shaft 8 to rotate forward, the inclined surface of the first wedge-shaped block 907 contacts the first inclined groove 904 of the slip ring 903, the first wedge-shaped block 907 overcomes the elastic force of the second torsional spring 906, rotates around the end of the driving rod 905, pulls down the rack 22 through the pull rope 909, compresses the first spring 910, the rack 22 moves downward and engages with the adjusting gear 902 at the end of each stirring paddle 901 to drive it to rotate, the adjusting gear 902 drives the stirring paddle 901 to rotate around the hinge shaft to adjust the blade inclination angle to a large angle of thirty to forty-five degrees, at this time, the stirring paddle 901 generates strong axial flow and high shear to promote the rapid dissolution of enteromorpha cellulose, at the same time, the spur gear 11 rotates forward, the mixed liquid in the tank 4 enters the backflow box 12 through the first backflow pipe 14 to preliminarily defoam, then enters the three-way valve 16 through the second backflow pipe 15 and is discharged back into the tank 4 from the third backflow pipe 17 to form an internal large circulation, after stirring for a certain time, the liquid inside reacts to produce bubble froth, the fan blade 1003 on the transmission shaft 8 guides the airflow upward, so that the bubbles in the mixed liquid float upward, the fan blade 1003 rotates with the transmission shaft 8 to suck in the bubble froth, which is broken under the collision, cutting and coalescence after passing through the grid 1002, the broken gas floats to the top of the defoaming box 1001 and escapes, and the liquid is discharged through the liquid outlet pipe 1004 under the driving of gravity and flow, the defoamed liquid reenters the main cavity of the tank 4 to complete the purification cycle.

[0050] When the extruded fiber, the speed regulation motor 7 drives the vertical transmission shaft 8 reverse rotation, the horizontal plane of the first wedge block 907 and the first inclined groove 904 of the slip ring 903 contact, the pull rope 909 relax, the first spring 910 pushes the rack 22 upward reset, the rack 22 drives the adjusting gear 902 in reverse, so that the stirring paddle 901 rotates to zero to ten degrees of small inclination or near horizontal state, at the same time, under low speed rotation, the slip ring 903 slowly rotates under the drive of the drive rod 905, the scraper 914 installed on the slip ring 903 scrapes the mixed liquid on the inner wall of the tank 4, reduces the residue, similarly, the spur gear 11 reverses, closes the third return pipe 17, opens the feed pipe 18, so that the liquid is driven by the planetary return force to the spinneret 5 for spinning;

[0051] During the spinning process, the water pipe 6 exchanges heat between the outer sleeve 401 and the inner sleeve 402, and the temperature after heat exchange is fifty to seventy degrees Celsius, which realizes the slow setting effect of the spinning solution, avoids the skin-core structure defect of the fiber, and the pressure relief plate 509 is closed in normal state, forming a sealing surface, when the internal pressure of the spinning channel 501 is too large, the mixed liquid pushes away the pressure relief plate 509 to release pressure, and the hydraulic mixed liquid is discharged back to the tank 4 through the discharge pipe 507.

[0052] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0053] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly fiber material preparation device based on seaweed raw material, comprising a first water-cooling tank (1), a second water-cooling tank (2), and a traction winding unit (3), characterized in that, A material box (4) is fixedly installed in the first water-cooling tank (1). A spinneret (5) is provided on one side of the material box (4). A spinneret channel (501) is opened in the spinneret (5). A water pipe (6) is connected between the spinneret (5) and the material box (4). A speed-regulating motor (7) is fixedly installed on the top of the material box (4). The output end of the speed-regulating motor (7) passes through the material box (4) and is connected to a drive shaft (8) through a coupling. A stirring assembly (9) and a defoaming assembly (10) are installed on the drive shaft (8). One end of the material box (4) passes through the discharge box (4) and is fixedly installed with a spur gear (11). The bottom of the material box (4) is eccentrically installed with a return box (12). An internal gear (13) is rotatably installed inside the return box (12). The return box (12) and the material box (4) are sealed together by a first return pipe (14) and a second return pipe (15). The extension directions of the first return pipe (14) and the second return pipe (15) are perpendicular to each other. The second return pipe (15) is connected to a third return pipe (17) and a feed pipe (18) through a three-way valve (16). The spinneret channel (501) includes a countersunk hole (502) and a slot (503), which are connected. A spinneret head (19) is installed in the slot (503). The spinneret head (19) is bolted to the surface of the countersunk hole (502). An extrusion channel (1901) is provided in the spinneret head (19). The countersunk hole (502) has a stepped cross-section. A partition (504) is fixedly installed inside the spinneret (5). The spinneret channel (501) and the water pipe (6) are located on both sides of the partition (504). A flexible pipe (21) is installed on the side of the spinneret (5) away from the feed box (4). The partition (504) is provided with a double layer, and a discharge chamber (505) is formed between the two layers of the partition (504). The spinneret (5) has a discharge hole (506) on the side near the material box (4). A discharge pipe (507) is connected between the discharge hole (506) and the third return pipe (17). A pressure relief channel (508) communicating with the discharge chamber (505) is provided on the wall of the countersunk hole (502). The pressure relief channel (508) is rotatably installed inside. There are symmetrically arranged pressure relief plates (509), and the side wall of the pressure relief channel (508) is provided with an installation groove (510). The two ends of the pressure relief plate (509) are fixedly installed with connecting pins (511). The connecting pins (511) are rotatably installed in the installation groove (510). A first torsion spring (512) is sleeved on the connecting pin (511). The two ends of the first torsion spring (512) are respectively fixed to the inner side of the pressure relief plate (509) and the installation groove (510). The stirring assembly (9) includes a stirring paddle (901) rotatably mounted on a drive shaft (8). An adjusting gear (902) is fixedly mounted at one end of the stirring paddle (901) inside the drive shaft (8). A slip ring (903) is rotatably mounted at the bottom of the hopper (4). A scraper (914) is mounted on the slip ring (903). A first inclined groove (904) is formed on the slip ring (903). A drive rod (905) is fixedly mounted on the drive shaft (8). A first wedge block (907) is rotatably mounted on one end near the slip ring (903) via a second torsion spring (906). A rack (22) is slidably mounted inside the drive shaft (8). A rope groove (908) is provided inside the drive rod (905) and a pull rope (909) is threaded through it. The two ends of the pull rope (909) are fixed to the first wedge block (907) and the rack (22) respectively. A first spring (910) is installed between the rack (22) and the bottom surface of the drive shaft (8). The defoaming component (10) includes a defoaming box (1001) installed in the material box (4). The defoaming box (1001) is coaxial with the drive shaft (8). A grid (1002) is fixedly installed inside the defoaming box (1001). A fan blade (1003) is installed on the drive shaft (8) located inside the defoaming box (1001). A liquid outlet pipe (1004) is fixedly installed on the bottom surface of the defoaming box (1001).

2. The environmentally friendly fiber material preparation device based on *Ulva prolifera* raw material according to claim 1, characterized in that: A gasket (20) is installed between the spinneret (19) and the surface of the countersunk hole (502).

3. The environmentally friendly fiber material preparation device based on *Ulva prolifera* raw material according to claim 1, characterized in that: The hopper (4) includes an outer sleeve (401) and an inner sleeve (402), and an oil pipe (403) is installed between the outer sleeve (401) and the inner sleeve (402).

4. The environmentally friendly fiber material preparation device based on *Ulva prolifera* raw material according to claim 1, characterized in that: The bottom surface of the slip ring (903) is provided with a groove (911), and a second wedge block (912) is slidably installed in the groove (911). A limit block (404) is fixedly installed at the bottom of the material box (4), and the limit block (404) has an inclined surface. A second spring (913) is fixedly connected between the second wedge block (912) and the top surface of the groove (911).

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