Carbon fiber wet spinning device

Abstract

The utility model relates to the technical field of carbon fiber preparation, and discloses a carbon fiber wet spinning device which comprises a base, a liquid spraying mechanism is fixedly mounted at the top of the base, a back plate is fixedly mounted on the right side of the liquid spraying mechanism, and a spinning groove is fixedly formed in the front side of the back plate. The concentration of the solvent in the spinning groove is accurately detected through the concentration detector, after the concentration is lower than a threshold value, one piston plate is made to do piston motion in the liquid storage area through operation of the execution air cylinder, the coagulating bath can be sucked into the liquid storage area when the piston plate ascends, and when the piston plate descends, the coagulating bath is sucked into the liquid storage area. Compared with a traditional device, the device has the advantages that the concentration of the coagulating bath in the spinning tank can be accurately detected, and the coagulating bath can be immediately added when the concentration is relatively low, so that the risk that the coagulating bath concentration is reduced, so that the coagulating speed of fibers is slow and the performance of the fibers is reduced is effectively avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of carbon fiber preparation, and more particularly to a carbon fiber wet spinning device. BACKGROUND

[0002] Carbon fiber is a kind of fiber material composed of carbon elements, which has excellent properties such as high strength, high modulus, light weight and corrosion resistance. Its structure is mainly composed of graphite microcrystals arranged along the fiber axis. This arrangement endows carbon fiber with extremely high mechanical properties, making it an important member of modern high-tech materials.

[0003] When preparing carbon fiber, wet spinning is a common method. It dissolves polyacrylonitrile (PAN) in a solvent to form a spinning solution, then extrudes the solution through a spinneret into a coagulation bath, exchanges the solvent with the coagulant, and coagulates the PAN into a fiber. Then, the fiber is washed to remove residual solvent, and then stretched to improve the orientation and strength of the fiber. Finally, the fiber is dried to obtain the original yarn.

[0004] However, in the actual spinning process, the solvent in the solution will continuously diffuse into the coagulation bath, and the coagulant in the coagulation bath will enter the fiber. Although the volume of solvent extruded by the spinneret is small each time, after a long time of spinning, the two-way exchange will cause the concentration of solvent in the coagulation bath to gradually increase, and the concentration of coagulant to gradually decrease. Further, the decrease in coagulation bath concentration will affect the coagulation speed and structural uniformity of the fiber, resulting in a decrease in fiber performance. Therefore, it needs to be improved and optimized. Practical new type content

[0005] In order to overcome the shortcomings of the prior art, the application provides a carbon fiber wet spinning device, which has the advantages of ensuring stable coagulation bath concentration and improving spinning quality.

[0006] To achieve the above purpose, the application provides the following technical scheme: a carbon fiber wet spinning device, comprising a base, a liquid spraying mechanism is fixedly installed on the top of the base, a back plate is fixedly installed on the right side of the liquid spraying mechanism, a spinning slot is fixedly installed on the front side of the back plate, and a water washing tank is fixedly installed on the top of the spinning slot.

[0007] The inner wall of the spinning groove is fixedly installed with a concentration detector, the front side of the spinning groove is fixedly installed with a PLC, the front side of the spinning groove is provided with a concentration adjusting mechanism, the concentration adjusting mechanism comprises an outer shell fixedly installed on the outer wall of the spinning groove, a liquid storage area is formed in the upper portion of the outer shell, an execution cylinder is fixedly installed on the top of the outer shell, the telescopic end of the execution cylinder penetrates into the inside of the liquid storage area and is fixedly installed with an execution rod, a piston plate is fixedly installed on the outer wall of the execution rod, a one-way output mechanism is arranged on the rear side of the liquid storage area, a one-way input mechanism is arranged on the right side of the liquid storage area, and a liquid adding mechanism is arranged in the spinning groove and communicates with the one-way output mechanism and the liquid storage area.

[0008] The front side of the base is provided with a coagulant storage tank, and the coagulant storage tank and the liquid storage area communicate through the one-way input mechanism.

[0009] As a preferred technical scheme of the present application, the liquid adding mechanism comprises a fixed shell fixedly installed on the inner wall of the front side of the spinning groove, a liquid adding head is formed in the side wall of the fixed shell, and the top of the fixed shell communicates with the liquid storage area through the one-way output mechanism.

[0010] As a preferred technical scheme of the present application, the one-way output mechanism comprises an output pipe, a first fixed rod is fixedly installed in the inside of the output pipe, a first plug is movably sleeved on the outer wall of the first fixed rod, the first plug and the first fixed rod are elastically connected through a first spring, and the first plug blocks the output pipe.

[0011] As a preferred technical scheme of the present application, the one-way input mechanism comprises an input pipe, a second fixed rod is fixedly installed in the inside of the input pipe, a second plug is movably sleeved on the outer wall of the second fixed rod, the second fixed rod and the second plug are abutted through a second spring, and the second plug blocks the input pipe.

[0012] As a preferred technical scheme of the present application, the bottom of the outer shell is provided with a sealing area, the bottom of the execution rod penetrates into the inside of the sealing area and is fixedly installed with another piston plate, another one-way input mechanism is arranged on the front side of the sealing area for air suction, and the rear side of the sealing area and one side of the bottom of the fixed shell communicate for air conveying.

[0013] The inside of the fixed shell is fixedly installed with a partition plate, and the other side of the bottom of the fixed shell communicates with another one-way output mechanism.

[0014] As a preferred technical scheme of the present application, the inside of the spinning groove is further fixedly installed with a ventilation plate, the ventilation plate and the fixed shell communicate through another one-way output mechanism, and an aeration diaphragm is fixedly installed on the top of the ventilation plate.

[0015] Compared with the prior art, the application has the following beneficial effects:

[0016] 1、The application can accurately detect the concentration of the solvent in the spinning groove through the concentration detector, and when the concentration is lower than the threshold value, the operation of the air cylinder is performed to make one of the piston plates do piston motion in the liquid storage area. When the piston plate rises, the coagulation bath is sucked into the liquid storage area, and when the piston plate descends, the coagulation bath is sprayed outwards through the liquid adding head. Compared with the traditional device, the device can accurately detect the concentration of the coagulation bath in the spinning groove, and immediately add when the concentration is low, effectively avoiding the risk of slow coagulation speed of the fiber and decline of the fiber performance caused by the decline of the coagulation bath concentration.

[0017] 2、When the coagulation bath is added, the piston motion of the other piston plate in the sealing area makes the air be sucked into the sealing area through the other one-way input mechanism, and then be discharged into the ventilation plate through the other one-way output mechanism. Finally, the air becomes bubbles and is discharged into the spinning groove through the aeration diaphragm. Compared with the traditional device, the device can accelerate the diffusion of the coagulation bath by blowing bubbles when the coagulation bath is added, and the slight disturbance caused by the bubbles will not cause mechanical impact on the fiber, improving the mixing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a structural schematic diagram of the application;

[0020] Figure 2 It is a structural schematic diagram of the concentration detector of the application;

[0021] Figure 3 It is a structural schematic diagram of the fixed shell of the application;

[0022] Figure 4 It is a structural schematic diagram of the one-way output mechanism of the application;

[0023] Figure 5 It is a structural schematic diagram of the aeration diaphragm of the application;

[0024] Figure 6 It is a structural schematic diagram of the concentration adjusting mechanism of the application;

[0025] Figure 7 It is a structural schematic diagram of the one-way input mechanism of the application.

[0026] Fig. 1, base; 2, liquid spraying mechanism; 3, back plate; 4, spinning groove; 5, water washing groove; 6, concentration detector; 7, one-way output mechanism; 701, output pipe; 702, first fixed rod; 703, first plug; 704, first spring; 8, PLC; 9, concentration adjusting mechanism; 901, shell; 902, execution cylinder; 903, liquid storage area; 904, sealing area; 905, execution rod; 906, piston plate; 907, coagulant storage tank; 10, one-way input mechanism; 1001, input pipe; 1002, second fixed rod; 1003, second plug; 1004, second spring; 11, liquid adding mechanism; 1101, fixed shell; 1102, liquid adding head; 1103, partition plate; 1104, aeration plate; 1105, aeration diaphragm. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are some 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 labor also belong to the protection scope of the present application.

[0028] As shown in Figures 1 to 7 The carbon fiber wet spinning device provided by the present application comprises a base 1, a liquid spraying mechanism 2 is fixedly installed on the top of the base 1, a back plate 3 is fixedly installed on the right side of the liquid spraying mechanism 2, a spinning groove 4 is fixedly installed on the front side of the back plate 3, and a water washing groove 5 is fixedly installed on the top of the spinning groove 4.

[0029] A concentration detector 6 is fixedly installed on the inner wall of the spinning groove 4, a PLC 8 is fixedly installed on the front side of the spinning groove 4, a concentration adjusting mechanism 9 is arranged on the front side of the spinning groove 4, the concentration adjusting mechanism 9 comprises a shell 901 fixedly installed on the outer wall of the spinning groove 4, a liquid storage area 903 is formed in the upper part of the inside of the shell 901, an execution cylinder 902 is fixedly installed on the top of the shell 901, an execution rod 905 is fixedly installed at the extension end of the execution cylinder 902 and penetrates into the inside of the liquid storage area 903, a piston plate 906 is fixedly installed on the outer wall of the execution rod 905, a one-way output mechanism 7 is arranged on the rear side of the liquid storage area 903, a one-way input mechanism 10 is arranged on the right side of the liquid storage area 903, a liquid adding mechanism 11 is arranged in the inside of the spinning groove 4 and communicates with the one-way output mechanism 7 and the liquid storage area 903. A coagulant storage tank 907 is arranged on the front side of the base 1, and the coagulant storage tank 907 and the liquid storage area 903 communicate through the one-way input mechanism 10.

[0030] The concentration detector 6 is electrically connected to the PLC8, and the PLC8 is electrically connected to the actuator cylinder 902. The concentration detector 6 detects the concentration of the solution inside the spinning tank 4, and the PLC8 controls the actuator cylinder 902 to operate based on the concentration detection result.

[0031] During spinning, the operator activates the spray mechanism 2, which sprays solvent through the spinneret into the spinning tank 4. The solvent mixes with the coagulation bath inside the spinning tank 4, causing the solvent to solidify into carbon fibers. The fibers are then transported to the washing tank 5 via the transport rollers on the back plate 3 for cleaning, thus completing the spinning process. For details, please refer to relevant descriptions in existing technology; they will not be repeated here. During spinning, the concentration detector 6 continuously monitors the solvent concentration inside the spinning tank 4. When the concentration of the coagulation bath drops to a set value, the PLC 8 transmits a control signal to the actuator cylinder 902, causing the actuator cylinder 902 to move the actuator rod 905 up and down. When the actuator rod 905 rises, the piston plate 906 moves upward within the liquid storage area 903. Further piston movement of the piston plate 906 opens the one-way input mechanism 10, and pressure draws the coagulation bath inside the coagulant storage tank 907 into the liquid storage area 903 through the one-way input mechanism 10. When the piston plate 906 rises to its maximum value, the actuator 905 will reset downwards, and the piston plate 906 will also descend synchronously. The piston movement of the piston plate 906 will close the one-way input mechanism 10 to prevent the coagulation bath from flowing back into the coagulant storage tank 907. At the same time, the descent of the piston plate 906 will open the one-way output mechanism 7, which will transport the coagulation bath inside the liquid storage area 903 to the liquid addition mechanism 11 through the one-way output mechanism 7. Then, the liquid addition mechanism 11 will spray it into the spinning tank 4 to realize the liquid addition operation of the spinning tank 4.

[0032] The concentration of the solvent inside the spinning tank 4 is accurately detected by the concentration detector 6. When the concentration is lower than the threshold, the operation of the cylinder 902 causes one set of piston plates 906 to move inside the liquid storage area 903. When the piston plate 906 rises, it draws the coagulation bath into the liquid storage area 903 through the one-way input mechanism 10. When the piston plate 906 falls, it sprays the coagulation bath outward through the one-way output mechanism 7 and the liquid addition mechanism 11. Compared with traditional devices, this device can accurately detect the concentration of the coagulation bath inside the spinning tank 4 and add liquid in time when the concentration is low, effectively avoiding the risk of slow fiber coagulation speed and fiber performance degradation caused by the decrease in coagulation bath concentration.

[0033] The liquid addition mechanism 11 includes a fixed housing 1101 fixedly installed on the inner wall of the front side of the spinning trough 4. A liquid addition head 1102 is provided on the side wall of the fixed housing 1101. The top of the fixed housing 1101 is connected to the liquid storage area 903 through a one-way output mechanism 7.

[0034] When the coagulation bath in the storage area 903 is output through the one-way output mechanism 7 and input into the interior of the fixed shell 1101, the coagulation bath is further sprayed into the spinning tank 4 through the liquid filling head 1102, thereby realizing the liquid filling operation of the spinning tank 4.

[0035] The unidirectional output mechanism 7 includes an output tube 701, a first fixing rod 702 is fixedly installed inside the output tube 701, a first plug 703 is movably sleeved on the outer wall of the first fixing rod 702, the first plug 703 and the first fixing rod 702 are elastically connected by a first spring 704, and the first plug 703 seals the output tube 701.

[0036] The front end of the first plug 703 faces the liquid storage area 903 and away from the output pipe 701. Through the design of the one-way output mechanism 7, liquid or gas can only flow in one direction. One set of one-way output mechanisms 7 installed behind the liquid storage area 903 ensures that the coagulation bath can only enter the fixed shell 1101 in one direction. Specifically, when the piston plate 906 descends, it pushes the first plug 703 towards the first fixed rod 702, opening the output pipe 701 and allowing the coagulation bath to flow from the liquid storage area 903 into the output pipe 701, and then into the fixed shell 1101. When the piston plate 906 rises, the first plug 703 is reset by the elastic potential energy of the first spring 704, thereby sealing the space between the liquid storage area 903 and the output pipe 701.

[0037] The one-way input mechanism 10 includes an input tube 1001, a second fixing rod 1002 is fixedly installed inside the input tube 1001, a second plug 1003 is movably sleeved on the outer wall of the second fixing rod 1002, the second fixing rod 1002 and the second plug 1003 are abutted by a second spring 1004, and the second plug 1003 seals the input tube 1001.

[0038] The front end of the second plug 1003 faces the output pipe 701 and away from the storage area 903. Through the design of the one-way input mechanism 10, liquid or gas can only flow in one direction. One set of one-way input mechanisms 10 installed on the right side of the storage area 903 ensures that the coagulation bath inside the coagulant storage tank 907 can only enter the storage area 903 in one direction, preventing backflow. Specifically, when the piston plate 906 descends, it pushes the second plug 1003 towards the second fixed rod 1002, opening the inlet pipe 1001 and allowing the coagulation bath to flow from the coagulant storage tank 907 into the storage area 903 through the input pipe 1001. When the piston plate 906 descends, the second plug 1003 is reset by the elastic potential energy of the second spring 1004, thereby sealing the space between the storage area 903 and the input pipe 1001.

[0039] The bottom of the outer casing 901 is provided with a sealing area 904. The bottom of the actuator 905 extends through the interior of the sealing area 904 and is fixedly installed with another piston plate 906. The front side of the sealing area 904 is provided with another one-way input mechanism 10 for air intake. The rear side of the sealing area 904 is connected to one side of the bottom of the fixed casing 1101. A partition 1103 is fixedly installed inside the fixed casing 1101. The other side of the bottom of the fixed casing 1101 is connected to another one-way output mechanism 7.

[0040] The outer casing 901 contains a sealing area 904 located below the liquid storage area 903, and another piston plate 906 is fixedly mounted on the rod of the actuator 905 within the sealing area 904. A one-way input mechanism 10 located at the front of the sealing area 904 communicates with the outside air, and air flows within the sealing area 904. The rear of the sealing area 904 communicates with one side of the bottom of the fixed casing 1101. The other side of the bottom of the fixed casing 1101 communicates with the spinning tank 4 via a one-way output mechanism 7. The fixed casing 1101 is divided into an upper and lower section by a partition 1103. The upper section carries the coagulation bath flowing from the liquid storage area 903 to the spinning tank 4, while the lower section carries the air flowing from the sealing area 904 to the spinning tank 4.

[0041] The other one-way output mechanism 7 and the other one-way input mechanism 10 in this embodiment can be found in the specific descriptions in the above embodiments, and will not be repeated here.

[0042] During the lifting and lowering process of the actuator rod 905 driven by the actuator cylinder 902, the piston plate 906 located at the bottom of the actuator rod 905 in the sealing area 904 will also move up and down. When the actuator rod 905 is raised, the one-way input mechanism 10 in the sealing area 904 is opened, and the outside air enters the interior of the sealing area 904 through the one-way input mechanism 10. At this time, the one-way output mechanism 7 at the bottom of the fixed housing 1101 remains closed.

[0043] When the actuator 905 descends, the air in the sealing area 904 is squeezed into the interior of the fixed housing 1101, and the one-way output mechanism 7 at the bottom of the fixed housing 1101 is opened. The air is then transported to the spinning tank 4 through the one-way output mechanism 7, and the newly added coagulation bath is mixed with the solvent inside the spinning tank 4 by the air.

[0044] The liquid storage area 903 is isolated from the sealing area 904 by a baffle plate. The actuator 905 passes through the baffle plate between the liquid storage area 903 and the sealing area 904 from top to bottom. In order to ensure that the sealing area 904 and the liquid storage area 903 are in an independent sealed state (i.e., the two are not connected), a sealing element can be provided at the connection between the baffle plate and the actuator 905.

[0045] The spinning trough 4 is also fixedly installed with an air vent plate 1104. The air vent plate 1104 and the fixed shell 1101 are connected by another one-way output mechanism 7. An aeration membrane 1105 is fixedly installed on the top of the air vent plate 1104.

[0046] When the actuator 905 descends, the air in the sealing area 904 is squeezed into the interior of the fixed shell 1101 and is transported to the ventilation plate 1104 through the one-way output mechanism 7. As the air enters, it is discharged outward through the aeration membrane 1105, which turns the air into bubbles. These bubbles float upward, further mixing the solvent in the newly added coagulation bath inside the spinning tank 4.

[0047] When adding the coagulation bath, the piston movement of another piston plate 906 inside the sealing area 904 causes air to be drawn into the sealing area 904 through another one-way input mechanism 10, and then discharged into the ventilation plate 1104 through another one-way output mechanism 7. Finally, the air will be turned into bubbles through the aeration membrane 1105 and discharged into the spinning tank 4. Compared with the conventional device, this device can accelerate the diffusion of the coagulation bath by introducing bubbles during the addition of the coagulation bath, and the slight detour will not cause mechanical impact on the fibers, thus improving the mixing efficiency.

[0048] The working principle and usage process of this application:

[0049] During spinning, the operator activates the spray mechanism 2, which sprays solvent through the spinneret into the spinning tank 4. The solvent mixes with the coagulation bath inside the spinning tank 4, causing the solvent to solidify into carbon fibers. The fibers are then transported by the transport rollers on the back plate 3 to the washing tank 5 for cleaning, thus completing the spinning process. During spinning, the concentration detector 6 continuously monitors the solvent concentration inside the spinning tank 4. When the concentration in the coagulation bath drops to a set value, the PLC 8 transmits a control signal to the actuator cylinder 902, causing the actuator cylinder 902 to move the actuator rod 905 up and down. When the actuator rod 905 rises, the piston plate 906 on the upper part of the actuator rod 905 will move upward inside the liquid storage area 903. The piston movement of the piston plate 906 will further pull the second plug 1003 in the liquid storage area 903 inward. Furthermore, the input pipe 1001 between the liquid storage area 903 and the coagulant storage tank 907 will be opened, and the coagulation bath inside the coagulant storage tank will be drawn into the liquid storage area 903 through the input pipe 1001 by pressure. When the piston plate 906 rises to its maximum value, the actuator 905 returns to its original position. At this time, the second plug 1003 in the liquid storage area 903 returns to its original position through the elastic potential energy of the second spring 1004, and blocks the input pipe 1001 to prevent the coagulation bath from flowing back. The coagulation bath inside the liquid storage area 903 pushes open the first plug 703 of the liquid storage area 903 and is transported to the interior of the fixed shell 1101 through the output pipe 701 between the liquid storage area 903 and the fixed shell 1101. The coagulation bath is sprayed out through the liquid filling head 1102 to realize the liquid filling operation. During the process of the actuator cylinder 902 driving the actuator 905 to perform lifting and lowering, the piston plate 906 at the bottom of the actuator 905 also moves up and down. When the actuator 905 rises, outside air enters the interior of the sealing area 904 through another one-way input mechanism 10. When the actuator 905 descends, the air in the sealing area 904 is squeezed into the interior of the fixed shell 1101 and is transported to the ventilation plate 1104 through another one-way output mechanism 7. As air enters, it is discharged outward through the aeration membrane 1105, which turns the air into bubbles. The bubbles float upward, mixing with the solvent in the newly added coagulation bath inside the spinning tank 4.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A carbon fiber wet spinning device comprising a base (1), characterized in that: The top of the base (1) is fixedly installed with a liquid spraying mechanism (2), the right side of the liquid spraying mechanism (2) is fixedly installed with a back plate (3), the front side of the back plate (3) is fixedly installed with a spinning groove (4), and the top of the spinning groove (4) is fixedly installed with a washing groove (5); The inner wall of the spinning groove (4) is fixedly installed with a concentration detector (6), the front side of the spinning groove (4) is fixedly installed with a PLC (8), and the front side of the spinning groove (4) is provided with a concentration adjusting mechanism (9); The concentration adjusting mechanism (9) comprises an outer shell (901) fixedly installed on the outer wall of the spinning groove (4), a liquid storage area (903) is formed in the upper portion of the inner portion of the outer shell (901), an executing cylinder (902) is fixedly installed on the top of the outer shell (901), the telescopic end of the executing cylinder (902) penetrates into the inner portion of the liquid storage area (903) and is fixedly installed with an executing rod (905), a piston plate (906) is fixedly installed on the outer wall of the executing rod (905), a one-way output mechanism (7) is arranged on the rear side of the liquid storage area (903), a one-way input mechanism (10) is arranged on the right side of the liquid storage area (903), and a liquid adding mechanism (11) is arranged in the inner portion of the spinning groove (4) and communicates with the one-way output mechanism (7) and the liquid storage area (903); A coagulant storage tank (907) is arranged on the front side of the base (1) and communicates with the liquid storage area (903) through the one-way input mechanism (10).

2. The carbon fiber wet spinning apparatus according to claim 1, characterized by: The liquid adding mechanism (11) comprises a fixed shell (1101) fixedly installed on the inner wall of the front side of the spinning groove (4), and a liquid adding head (1102) is formed in the side wall of the fixed shell (1101) and communicates with the one-way output mechanism (7) and the liquid storage area (903).

3. The carbon fiber wet spinning apparatus according to claim 1, characterized by: The one-way output mechanism (7) comprises an output pipe (701), a first fixed rod (702) is fixedly installed in the inner portion of the output pipe (701), a first plug (703) is movably sleeved on the outer wall of the first fixed rod (702), the first plug (703) and the first fixed rod (702) are elastically connected through a first spring (704), and the first plug (703) blocks the output pipe (701).

4. The carbon fiber wet spinning apparatus according to claim 1, characterized by: The one-way input mechanism (10) comprises an input pipe (1001), a second fixed rod (1002) is fixedly installed in the inner portion of the input pipe (1001), a second plug (1003) is movably sleeved on the outer wall of the second fixed rod (1002), the second fixed rod (1002) and the second plug (1003) are abutted through a second spring (1004), and the second plug (1003) blocks the input pipe (1001).

5. The carbon fiber wet spinning apparatus according to any one of claims 1 to 4, characterized by: The bottom of the shell (901) is provided with a sealing area (904), the bottom of the execution rod (905) penetrates into the inside of the sealing area (904) and is fixedly installed with another piston plate (906), the front side of the sealing area (904) is provided with another one-way input mechanism (10) for air suction, the rear side of the sealing area (904) and the bottom side of the fixed shell (1101) are communicated for air delivery. The inside of the fixed shell (1101) is fixedly installed with a partition plate (1103), and the other side of the bottom of the fixed shell (1101) is communicated with another one-way output mechanism (7).

6. The carbon fiber wet spinning apparatus according to claim 5, characterized by: The inside of the spinning groove (4) is further fixedly installed with a ventilation plate (1104), the ventilation plate (1104) and the fixed shell (1101) are communicated through another one-way output mechanism (7), and the top of the ventilation plate (1104) is fixedly installed with an aeration diaphragm (1105).

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