Carbon fiber stock solution preparation system and control method

Abstract

The invention discloses a carbon fiber stock solution preparation system and a control method, the carbon fiber stock solution preparation system comprises a defoaming device for defoaming a stock solution, and is characterized in that the carbon fiber stock solution preparation system is provided with a monitoring unit for monitoring impurity information of the carbon fiber stock solution in the defoaming device. The carbon fiber stock solution monitoring device has the beneficial effects that the monitoring unit is additionally arranged in the tank body and is used for continuously monitoring the carbon fiber stock solution in real time, and impurities such as bubbles and gel in the stock solution can be timely and accurately monitored, so that the risk of missing detection is avoided.

Description

Technical Field

[0001] The invention belongs to the field of carbon fiber spinning, and in particular relates to a carbon fiber stock solution preparation system and a control method. Background Art

[0002] In the spinning process, the quality of stock solution preparation is a key factor affecting the spinnability of spinning. During the transportation of the spinning stock solution, the mechanical stirring of the gear pump and the agitator causes a large amount of free gas to be entrained in the glue solution, forming bubbles, and impurities such as gel are generated in the stock solution. These impurities are entrained in the glue solution, and the subsequent transportation to the spinneret before spinning will cause broken fibers, seriously affecting the product quality of the spinning raw fibers, the production rate and the continuity of the process production. Therefore, a degassing device is provided in the carbon fiber stock solution preparation system, and a low-pressure environment is formed inside the degassing device. After the carbon fiber stock solution is passed into the degassing device and then extruded and stirred by the extrusion component inside the degassing device, the entrained gas is precipitated, and the gas is discharged through the vacuum port of the degassing device to achieve degassing of the carbon fiber stock solution.

[0003] However, due to the characteristics of the continuous process of rubber making, the detection of bubbles and impurities in the raw liquid after degassing by the degassing device has become a new problem. At present, the detection of bubbles in the raw liquid after degassing mainly relies on the manual visual inspection conducted by employees from time to time; however, the vision and color resolution ability of the human eye are different, which makes this detection method have a certain risk of missed detection, and when bubbles and impurities are generated, it is difficult to ensure that employees can discover them in time, especially in the continuous and large-scale production process, the phenomenon of missed detection occasionally occurs, affecting the production rate of carbon fiber and the continuity of process production.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a carbon fiber stock solution preparation system and a control method. By adding a monitoring unit in the tank body, the monitoring unit performs continuous real-time monitoring of the carbon fiber stock solution, and can timely and accurately monitor the presence of impurities such as bubbles and gels in the stock solution, thereby avoiding the risk of missed detection.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a carbon fiber stock solution preparation system, including a degassing device for degassing the stock solution, and the carbon fiber stock solution preparation system is provided with a monitoring unit for monitoring the impurity information of the carbon fiber stock solution in the degassing device.

[0007] Furthermore, the degassing device includes a tank body and a delivery pipeline connected to a liquid outlet of the tank body, and the monitoring unit monitors impurity information of the carbon fiber stock solution in the delivery pipeline.

[0008] Further, the monitoring unit includes an image acquisition module for acquiring image information inside the conveying pipeline;

[0009] The image acquisition module is installed outside the conveying pipeline, and a transparent observation part is provided on the conveying pipeline. The image acquisition module acquires image information inside the conveying pipeline through the observation part;

[0010] Alternatively, the image acquisition module is installed inside the delivery pipe.

[0011] Furthermore, the degassing device is provided with a lighting unit for illuminating the carbon fiber stock solution in the conveying pipeline;

[0012] Preferably, an observation portion is provided on one side wall of the conveying pipe, a light-transmitting portion is provided on the side wall on the opposite side, and a lighting unit is provided outside the conveying pipe, and the lighting unit illuminates the carbon fiber stock solution in the conveying pipe through the projection portion.

[0013] A control method for a carbon fiber stock solution preparation system, wherein the carbon fiber manufacturing system adopts a carbon fiber stock solution preparation system as described above; the preparation system also includes a terminal device, which is provided with a display unit. During the operation of the degassing device, the terminal device controls the display unit to display in real time the impurity information monitored by the monitoring unit.

[0014] Furthermore, the impurity information includes the number of impurities and the actual diameter of the impurities; the terminal device is provided with a prompt unit, and after the monitoring unit detects that the number of impurities is greater than or equal to 1, it determines whether the actual diameter of the impurity is greater than or equal to a preset diameter threshold; if so, the prompt unit is controlled to issue a prompt message.

[0015] Furthermore, when judging that the actual diameter of the impurity is greater than or equal to the preset diameter threshold, it is judged whether the number of impurities whose actual diameter is greater than the diameter threshold is less than or equal to the preset first number. If so, the control prompt unit issues a first prompt message; if not, the control prompt unit issues a second prompt message.

[0016] Furthermore, the impurity information includes the type of impurities; the carbon fiber stock solution preparation system is provided with a control unit, and when the number of impurities monitored is greater than or equal to 1, the control unit adjusts the operating parameters of the carbon fiber manufacturing system according to the type of impurities.

[0017] Furthermore, the types of impurities include gas impurities and other impurities; when the number of impurities monitored is greater than or equal to 1, it is determined whether the type of impurities is gas impurities; if so, the vacuum value inside the degassing device is increased; if not, the carbon fiber stock solution preparation system is controlled to shut down.

[0018] Furthermore, the carbon fiber stock solution preparation system is provided with a recording unit. When the judgment unit judges that the actual diameter of the impurity is greater than or equal to the diameter threshold, the recording unit records one operation abnormality; the operation period of the carbon fiber stock solution preparation system is divided into multiple operation cycles, and the number of operation abnormalities in each operation cycle is accumulated. According to the number of operation abnormalities in each cycle, the change trend of the operation abnormalities during this operation period is obtained, and the change trend is sent to the terminal device.

[0019] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: by adding a monitoring unit in the tank body, the monitoring unit performs continuous real-time monitoring of the carbon fiber stock solution, and can timely and accurately monitor the presence of impurities such as bubbles and gels in the stock solution, thereby avoiding the risk of missed detection.

[0020] At the same time, the invention has a simple structure, significant effects and is suitable for popularization and use.

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0023] Figure 1 2 is a schematic structural diagram of a degassing device according to an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of the control steps of the carbon fiber stock solution preparation system according to an embodiment of the present invention.

[0025] In the figure: 1. degassing device; 110. tank body; 120. conveying pipeline; 121. observation part; 122. light-transmitting part; 130. vacuum port; 140. liquid inlet; 2. monitoring unit; 3. lighting unit.

[0026] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figure 1 As shown, in an embodiment of the present invention, a carbon fiber stock solution preparation system is introduced, including a degassing device 1 for degassing the stock solution, and the carbon fiber stock solution preparation system is provided with a monitoring unit 2 for monitoring the impurity information of the carbon fiber stock solution in the degassing device 1.

[0031] Through the above configuration, by adding the monitoring unit 2 in the tank body 110, the monitoring unit 2 performs continuous real-time monitoring of the carbon fiber stock solution, and can timely and accurately monitor the presence of impurities such as bubbles and gels in the stock solution, thereby avoiding the risk of missed detection.

[0032] In one embodiment of the present invention, the degassing device 1 includes a tank body 110, and a liquid outlet is opened at the bottom of the tank body 110; a stirring mechanism is arranged in the tank body 110, which is used to stir the carbon fiber stock solution in the tank body 110, and the bottom of the stirring mechanism is arranged at a certain distance from the bottom of the tank body 110, and the monitoring unit 2 monitors the impurity information of the carbon fiber stock solution in the interval space.

[0033] In another preferred embodiment of the present invention, the degassing device 1 includes a tank body 110 and a conveying pipe 120 connected to the liquid outlet of the tank body 110, and the monitoring unit 2 monitors the impurity information of the carbon fiber stock solution in the conveying pipe 120; further, the inner diameter of the conveying pipe 120 is smaller than the inner diameter of the tank body 110; because the flow pattern of the carbon fiber stock solution in the tank body 110 is relatively chaotic under the influence of devices such as the stirring mechanism, monitoring errors are prone to occur, while the carbon fiber stock solution in the conveying pipe 120 only flows along the extension direction of the conveying pipe 120, the flow pattern is relatively simple, and the monitoring error is small, thereby improving the monitoring accuracy.

[0034] In an embodiment of the present invention, a liquid inlet 140 and a vacuum port are provided on the top of the tank body 110. The carbon fiber stock solution enters the tank body 110 through the liquid inlet 140. The vacuum port is connected to a vacuum device. The vacuum device sucks the gas in the tank body 110 by vacuuming to reduce the air pressure in the tank body 110 and improve the bubble precipitation efficiency.

[0035] In one embodiment of the present invention, the monitoring unit 2 includes an ultrasonic transmitter and an ultrasonic receiver; after the ultrasound passes through impurities during the propagation process, its sound information will change to a certain extent, and based on the changes in the sound information received by the ultrasonic receiver, it can be determined whether there are impurities in the carbon fiber stock solution.

[0036] In another embodiment of the present invention, the monitoring unit 2 includes a ray transmitter and a ray receiver; the ray emitted by the ray transmitter propagates in a straight line when it only passes through the carbon fiber stock solution; after the ray passes through the impurities, the ray will be refracted, causing its propagation direction to be deflected, and when the position where the receiver receives the ray changes, it can be determined that impurities exist in the carbon fiber stock solution.

[0037] In another preferred embodiment of the present invention, the monitoring unit 2 includes an image acquisition module for acquiring image information inside the conveying pipeline 120 ; the image acquisition module is installed inside the conveying pipeline 120 .

[0038] In another embodiment of the present invention, the monitoring unit 2 includes an image acquisition module for acquiring image information inside the conveying pipe 120; the image acquisition module is installed on the outside of the conveying pipe 120, and a transparent observation part 121 is provided on the conveying pipe 120, and the image acquisition module acquires image information inside the conveying pipe 120 through the observation part 121.

[0039] When the density and viscosity of the carbon fiber stock solution change, both ultrasonic monitoring and X-ray monitoring will be interfered to a certain extent, affecting the monitoring accuracy. Through the above settings, the image acquisition module is used to take real-time photos to continuously obtain image information, and the image information is processed to determine whether there are impurities in the carbon fiber stock solution based on the processed image. Compared with ultrasonic monitoring and X-ray monitoring, the two methods are less susceptible to interference, thereby improving the anti-interference ability of the detection unit.

[0040] In addition, since the temperature of the carbon fiber stock solution is relatively high, the image acquisition module is disposed outside the delivery pipe 120 to isolate the image acquisition module from the carbon fiber stock solution, thereby preventing the image acquisition module from being exposed to high temperature for a long time, thereby preventing the internal electronic components from being damaged.

[0041] In an embodiment of the present invention, the image acquisition module has a shooting acquisition end, and the shooting direction of the acquisition end coincides with the axis of the corresponding position of the conveying pipeline 120; preferably, the shooting direction of the acquisition end is perpendicular to the axis of the corresponding position of the conveying pipeline 120.

[0042] In an embodiment of the present invention, the liquid outlet is opened at the bottom of the tank bottom, the delivery pipeline 120 at least partially extends from top to bottom, and the observation portion 121 is arranged on the pipeline wall of this portion of the delivery pipeline 120.

[0043] In an embodiment of the present invention, the degassing device 1 is provided with a lighting unit 3 for illuminating the carbon fiber stock solution in the conveying pipe 120; the lighting unit 3 is used to increase the brightness in the conveying pipe 120 so that the monitoring unit 2 can obtain clearer image information, thereby improving the monitoring accuracy of the monitoring unit 2.

[0044] In an embodiment of the present invention, an observation portion 121 is provided on one side wall of the conveying pipe 120, and a light-transmitting portion 122 is provided on the side wall on the opposite side. The lighting unit 3 is provided outside the conveying pipe 120, and the lighting unit 3 illuminates the carbon fiber stock solution in the conveying pipe 120 through the projection portion; so that the lighting unit 3 is isolated from the carbon fiber stock solution with a higher temperature, thereby improving the service life of the lighting unit 3.

[0045] In the embodiment of the present invention, the light emitting direction of the lighting unit 3 coincides with the shooting direction of the acquisition end of the monitoring unit 2 , so as to further improve the clarity of the image information obtained by the monitoring unit 2 .

[0046] In an embodiment of the present invention, the lighting unit 3 includes a main light portion and a sub-light portion arranged around the main light portion, the light emitting direction of the main light portion coincides with the shooting direction, and the light emitting direction of the sub-light portion is inclined toward the direction close to the main light portion; preferably, the position where the light emitting direction of each sub-light portion coincides with the light emitting direction of the main light portion is located on the acquisition end of the monitoring unit 2; another preferred position where the light emitting direction of each sub-light portion coincides with the light emitting direction of the main light portion is located on the axis of the conveying pipe 120.

[0047] Through the above-mentioned setting, by setting the main lamp part and the auxiliary lamp part to form a shadowless lamp, it is avoided that the detection unit misjudges the shadow of an impurity as another impurity or misjudges the size of the impurity, thereby further improving the monitoring accuracy.

[0048] In the embodiment of the present invention, the auxiliary lamp portions are arranged on both sides of the main lamp portion along the axial direction of the delivery pipe 120 .

[0049] In the embodiment of the present invention, the auxiliary lamp portions are arranged on both sides of the main lamp portion along the circumferential direction of the delivery pipe 120 .

[0050] like Figure 1 and 2As shown, in an embodiment of the present invention, a control method for a carbon fiber stock solution preparation system is also introduced. The carbon fiber manufacturing system adopts a carbon fiber stock solution preparation system as described above; the preparation system also includes a terminal device, and a display unit is arranged on the terminal device. During the operation of the degassing device 1, the terminal device controls the display unit to display the impurity information monitored by the monitoring unit 2 in real time.

[0051] Through the above arrangement, the impurity information monitored by the monitoring unit 2 is displayed in real time through the display unit, so that when impurities appear, the on-duty staff can be informed in time, and perform emergency treatment and process optimization adjustment in time according to the impurity information, so as to avoid an increase in the broken wire rate in the subsequent spinning process.

[0052] In an embodiment of the present invention, the monitoring unit 2 is an image acquisition module, which acquires images in real time, and the terminal device performs image processing on the image to obtain impurity information contained in the image; specifically, after the image is processed, the grayscale value of the impurities in the image is not within the grayscale interval where the grayscale value of the carbon fiber stock solution is located, and the number of impurities in the impurity information can be obtained by counting the number of areas in the image whose grayscale values ​​are not within the grayscale interval.

[0053] In an embodiment of the present invention, the impurity information includes the number of impurities and the actual diameter of the impurities; the terminal device is provided with a prompt unit, and after the monitoring unit 2 detects that the number of impurities is greater than or equal to 1, it determines whether the actual diameter of the impurity is greater than or equal to a preset diameter threshold; if so, the prompt unit is controlled to issue a prompt message.

[0054] In actual operation, it is found that the effect of bubbles that are too small on the broken wire rate is negligible, and only larger bubbles or gels will have an impact. Through the above settings, when the detection unit monitors impurities, the diameter of the impurities is analyzed to determine whether the monitored impurities will have an impact on subsequent production. When there will be no impact, only the impurity information will be displayed through the display unit. When it is determined that there will be an impact, employees will be reminded through measures such as alarms so that they can deal with it in time, thereby improving the intelligence of the carbon fiber stock solution preparation system.

[0055] In an embodiment of the present invention, the carbon fiber stock solution preparation system is provided with a recording unit; after the monitoring unit 2 detects that the number of impurities is greater than or equal to 1, it determines whether the actual diameter of the impurities is greater than or equal to a preset diameter threshold; if so, the recording unit is controlled to record the current time and the number of impurities whose diameter is greater than or equal to the preset diameter threshold.

[0056] In an embodiment of the present invention, the number of mosaics in the region whose grayscale value is not within the grayscale interval in the counted image is used to obtain the cross-sectional area of ​​the corresponding impurity according to the number of mosaics in each region, and then the actual diameter of each impurity is obtained by calculating the cross-sectional area.

[0057] In an embodiment of the present invention, when judging that the actual diameter of an impurity is greater than or equal to a preset diameter threshold, it is judged whether the number of impurities whose actual diameter is greater than the diameter threshold is less than or equal to a preset first number. If so, the control prompt unit sends a first prompt message; if not, the control prompt unit sends a second prompt message; preferably, the second prompt message and the first prompt message respectively include one or a combination of the volume of the alarm sound, the urgency of the alarm sound, the flashing frequency of the alarm light, the color of the alarm light, the interface color of the display unit, and the text prompt on the display unit; more preferably, the second prompt message and the first prompt message have different prompt intensities, and the greater the prompt intensity, the louder the color sound, the higher the frequency, and the brighter the color; the prompt intensity of the second prompt message is greater than the prompt intensity of the first prompt message.

[0058] In an embodiment of the present invention, the impurity information includes the type of impurities; the carbon fiber stock solution preparation system is provided with a control unit, and when the number of impurities monitored is greater than or equal to 1, the control unit adjusts the operating parameters of the carbon fiber manufacturing system according to the type of impurities.

[0059] Through the above settings, by distinguishing the types of impurities, when impurities appear, the operating parameters can be accurately adjusted according to the types of impurities, so as to further improve the intelligence of the carbon fiber stock solution preparation system.

[0060] In an embodiment of the present invention, the types of impurities include gas impurities and other impurities; when the number of impurities monitored is greater than or equal to 1, it is determined whether the type of impurities is gas impurities; if so, the vacuum value inside the degassing device 1 is increased; if not, the carbon fiber stock solution preparation system is controlled to shut down; specifically, other impurities are gel impurities and / or crystal impurities; preferably, other impurities are gel impurities; by increasing the vacuum value, the degassing efficiency of the degassing device 1 is improved to reduce the number and size of bubble impurities, so that the carbon fiber stock solution preparation system can make emergency adjustments to the operating parameters, temporarily eliminate the bubble impurities, and allow employees to have more sufficient time to optimize the carbon fiber stock solution preparation system; and when it is determined to be other impurities, it is determined that there is a problem with the carbon fiber stock solution preparation device upstream of the degassing device 1, and an emergency shutdown is performed to stop the carbon fiber stock solution preparation and continue to prepare low-quality carbon fiber stock solution.

[0061] In an embodiment of the present invention, when the number of impurities monitored is greater than or equal to 1, it is determined whether the grayscale value of the area in the counting image whose grayscale value is not within the grayscale interval is less than the minimum value of the grayscale interval. If so, the impurity is determined to be a bubble impurity; if not, the impurity is determined to be other impurities.

[0062] In an embodiment of the present invention, the control steps of the carbon fiber stock solution preparation system include:

[0063] S1: During the operation of the degassing device 1, the monitoring unit 2 obtains an image of the carbon fiber stock solution, the terminal device determines the impurity information based on the image, and the display unit displays the impurity information in real time;

[0064] S2: After the monitoring unit 2 detects that the number of impurities is greater than or equal to 1, determine whether the actual diameter of the impurities is greater than or equal to a preset diameter threshold; if so, execute S3; if not, execute S1;

[0065] S3: The recording unit records the current time and the number of impurities whose diameter is greater than or equal to a preset diameter threshold;

[0066] S4: Determine whether the number of impurities whose actual diameter is greater than the diameter threshold is less than or equal to a preset first number; if so, execute S5; if not, execute S6;

[0067] S5: Control the prompt unit to issue a first prompt message, and execute S7;

[0068] S6: Control the prompt unit to issue a second prompt message, and execute S7:

[0069] S7: Determine whether the impurity is a gas impurity; if so, execute S8; if not, execute S9;

[0070] S8: Increase the vacuum value inside the degassing device 1 and execute S1;

[0071] S9: Control the carbon fiber stock solution preparation system to shut down, and execute S1 after the carbon fiber stock solution preparation system is restarted.

[0072] In an embodiment of the present invention, a carbon fiber stock solution preparation system is provided with a recording unit. When the judgment unit judges that the actual diameter of the impurity is greater than or equal to the diameter threshold, the recording unit records one operation abnormality. The operation period of the carbon fiber stock solution preparation system is divided into multiple operation cycles, and the number of operation abnormalities in each operation cycle is accumulated. The change trend of the operation abnormalities during this operation period is obtained according to the number of operation abnormalities in each cycle, and the change trend is sent to the terminal device. By forming a change trend report, data support is provided for the improvement of the carbon fiber stock solution preparation system.

[0073] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above in the preferred embodiment, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A carbon fiber stock solution preparation system, comprising a degassing device for degassing the stock solution, characterized in that: The carbon fiber stock solution preparation system is provided with a monitoring unit for monitoring the impurity information of the carbon fiber stock solution in the degassing device.

2. A carbon fiber stock solution preparation system according to claim 1, characterized in that: The degassing device comprises a tank body and a conveying pipeline connected with a liquid outlet of the tank body, and a monitoring unit monitors impurity information of the carbon fiber stock solution in the conveying pipeline.

3. A carbon fiber stock solution preparation system according to claim 2, characterized in that: The monitoring unit includes an image acquisition module for acquiring image information inside the conveying pipeline; The image acquisition module is installed outside the conveying pipeline, and a transparent observation part is provided on the conveying pipeline. The image acquisition module acquires image information inside the conveying pipeline through the observation part; Alternatively, the image acquisition module is installed inside the delivery pipe.

4. A carbon fiber stock solution preparation system according to claim 3, characterized in that: The degassing device is equipped with a lighting unit for illuminating the carbon fiber stock solution in the conveying pipeline; Preferably, an observation portion is provided on one side wall of the conveying pipe, a light-transmitting portion is provided on the side wall on the opposite side, and a lighting unit is provided outside the conveying pipe, and the lighting unit illuminates the carbon fiber stock solution in the conveying pipe through the projection portion.

5. A control method for a carbon fiber stock solution preparation system, characterized in that: The carbon fiber manufacturing system adopts a carbon fiber stock solution preparation system as described in any one of claims 1-4; the preparation system also includes a terminal device, which is provided with a display unit. During the operation of the degassing device, the terminal device controls the display unit to display the impurity information monitored by the monitoring unit in real time.

6. The control method of a carbon fiber stock solution preparation system according to claim 5, characterized in that: The impurity information includes the impurity quantity and the actual diameter of the impurity; The terminal device is provided with a prompt unit. After the monitoring unit detects that the number of impurities is greater than or equal to 1, it determines whether the actual diameter of the impurities is greater than or equal to a preset diameter threshold; if so, the prompt unit is controlled to issue a prompt message.

7. The control method of a carbon fiber stock solution preparation system according to claim 6, characterized in that: When judging that the actual diameter of the impurity is greater than or equal to the preset diameter threshold, judge whether the number of impurities whose actual diameter is greater than the diameter threshold is less than or equal to the preset first number. If so, the control prompt unit issues a first prompt message; if not, the control prompt unit issues a second prompt message.

8. The control method of a carbon fiber stock solution preparation system according to claim 6, characterized in that: The impurity information includes the type of impurity; The carbon fiber stock solution preparation system is provided with a control unit. When the number of impurities detected is greater than or equal to 1, the control unit adjusts the operating parameters of the carbon fiber manufacturing system according to the type of impurities.

9. The control method of a carbon fiber stock solution preparation system according to claim 8, characterized in that: The types of impurities include gaseous impurities and other impurities; When the number of impurities detected is greater than or equal to 1, determine whether the impurities are gas impurities; If yes, increase the vacuum value inside the degassing device; If not, the carbon fiber stock solution preparation system is controlled to shut down.

10. A control method for a carbon fiber stock solution preparation system according to any one of claims 7 to 9, characterized in that: The carbon fiber stock solution preparation system is provided with a recording unit. When the judging unit judges that the actual diameter of the impurity is greater than or equal to the diameter threshold, the recording unit records one operation abnormality; The operation period of the carbon fiber stock solution preparation system is divided into multiple operation cycles. The number of operation anomalies in each operation cycle is accumulated, and the change trend of the operation anomalies during this operation period is obtained according to the number of operation anomalies in each cycle, and the change trend is sent to the terminal device.

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