Carbon fiber washing system and method

Abstract

The invention relates to a carbon fiber washing system and method. The carbon fiber washing system comprises a washing device, the washing device is internally provided with a baffle, the baffle divides the washing device into a first area and a second area, the first end of the first area is used for being connected with a desalted water pipeline, and the first area is provided with a first detection device; the first end of the storage device is connected with the second end of the first area; a second detection device and a first circulation device are arranged in the storage device, the first end is connected with the second end of the storage device, and the second end is connected with the first end of the second area; the first end of the second circulating device is connected with the third end of the storage device; the first end of the pickling batching device is connected with the second end of the second circulating device; the control device is electrically connected with the washing device, the storage device, the first circulating device, the second circulating device, the first detection device and the second detection device; the control device is used for controlling replacement of the desalted water in the washing device and controlling cyclic utilization of the desalted water in the storage device.

Description

Technical Field

[0001] The present disclosure relates to the technical field of carbon fiber production, and in particular to a carbon fiber washing system and method. Background Art

[0002] In the carbonization process of carbon fiber, after the carbon fiber is electrochemically treated, the electrolyte on the surface of the carbon fiber is usually removed by desalting water to improve the performance of the carbon fiber. The consumption of desalted water can be reduced by replacing the desalted water by manually measuring the conductivity of the desalted water in the washing device regularly. However, the replacement method of manual regular measurement has the problem of untimely replacement, resulting in poor washing effect of carbon fiber. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a carbon fiber water washing system and method.

[0004] According to a first aspect of an embodiment of the present disclosure, a carbon fiber water washing system is provided, the carbon fiber water washing system comprising:

[0005] A water washing device, wherein a baffle is provided in the water washing device, wherein the baffle divides the water washing device into a first area and a second area, wherein a first end of the first area is used to be connected to a desalted water pipeline, and a first detection device is provided in the first area, wherein the first detection device is used to detect a first conductivity of the desalted water in the first area;

[0006] A storage device, wherein a first end of the storage device is connected to a second end of the first region; a second detection device is disposed in the storage device, and the second detection device is used to detect a second conductivity of the desalted water in the storage device;

[0007] a first circulation device, wherein a first end of the first circulation device is connected to a second end of the storage device, and a second end of the first circulation device is connected to a first end of the second region;

[0008] a second circulation device, wherein a first end of the second circulation device is connected to a third end of the storage device;

[0009] A pickling batching device, wherein a first end of the pickling batching device is connected to a second end of the second circulation device;

[0010] A control device, the control device being electrically connected to the water washing device, the storage device, the first circulation device, the second circulation device, the first detection device, and the second detection device; the control device is used to control the replacement of desalted water in the water washing device and the recycling of desalted water in the storage device according to the detection results of the first detection device and the second detection device;

[0011] The baffle is connected to the bottom of the water washing device, and there is a gap between the baffle and the top of the water washing device, and the gap is used for carbon fiber to pass through.

[0012] In some embodiments of the present disclosure, the water washing device is provided with a first valve, a second valve and a third valve; the first valve is provided at the first end of the first area, the second valve is provided at the second end of the first area, and the third valve is provided at the first end of the second area;

[0013] The storage device is provided with a fourth valve and a fifth valve, the fourth valve is provided at the second end of the storage device, and the fifth valve is provided at the third end of the storage device;

[0014] Wherein, the control device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

[0015] In some embodiments of the present disclosure, the carbon fiber washing system further includes:

[0016] a first filtering device, the first filtering device being disposed between the storage device and the first circulation device and being used for filtering the desalted water flowing into the first circulation device;

[0017] A second filtering device is provided between the storage device and the second circulation device, and is used for filtering the desalted water flowing into the second circulation device.

[0018] In some embodiments of the present disclosure, the second end of the second region, the fourth end of the storage device, the third end of the first circulation device, and the third end of the second circulation device are all connected to a sewage pipe;

[0019] The second area, the storage device, the first circulation device and the second circulation device are all provided with liquid level devices, and the control device is electrically connected to the plurality of liquid level devices.

[0020] In some embodiments of the present disclosure, the second area is provided with a sixth valve, the storage device is provided with a seventh valve, the first circulation device is provided with an eighth valve, and the second circulation device is provided with a ninth valve; the sixth valve is provided at the second end of the second area, the seventh valve is provided at the fourth end of the storage device, the eighth valve is provided at the third end of the first circulation device, and the ninth valve is provided at the third end of the second circulation device;

[0021] Wherein, the control device is electrically connected to the sixth valve, the seventh valve, the eighth valve and the ninth valve.

[0022] In some embodiments of the present disclosure, the second circulation device is provided with a concentration detection device; the carbon fiber washing system further comprises:

[0023] A pickling liquid replenishing device, the pickling liquid replenishing device is connected to the second end of the pickling batching device;

[0024] Wherein, the control device is electrically connected to the concentration detection device and the pickling liquid replenishing device.

[0025] In some embodiments of the present disclosure, the carbon fiber washing system further includes:

[0026] An alarm device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

[0027] In some embodiments of the present disclosure, there are multiple first detection devices; the multiple first detection devices are all electrically connected to the control device, and the multiple first detection devices are all arranged at the bottom of the water washing device.

[0028] According to a second aspect of an embodiment of the present disclosure, a carbon fiber washing method is provided, the carbon fiber washing method comprising:

[0029] determining a first electrical conductivity of desalinated water within the first region;

[0030] When the first electrical conductivity is greater than a first preset electrical conductivity, the desalted water in the first area is discharged into a storage device and the desalted water is replenished in the first area;

[0031] detecting a second conductivity of the desalted water in the storage device;

[0032] When the second electrical conductivity is less than a second preset electrical conductivity, the desalted water in the storage device is discharged into a first circulation device; when the second electrical conductivity is greater than a second preset electrical conductivity, the desalted water in the storage device is discharged into a second circulation device;

[0033] Wherein, the first preset conductivity is smaller than the second preset conductivity.

[0034] In some embodiments of the present disclosure, when the second conductivity is greater than a third preset conductivity, the desalted water in the storage device is discharged into a sewage pipeline;

[0035] Wherein, the third preset conductivity is greater than the second preset conductivity.

[0036] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0037] The carbon fiber washing system includes a washing device, a storage device, a first circulation device, a second circulation device, a pickling batching device and a control device. The control device is electrically connected to the washing device, the storage device, the first circulation device, the second circulation device, the first detection device and the second detection device, and the storage device is connected between the washing device, the first circulation device and the second circulation device. Since the control device is electrically connected to the first detection device, when the control device detects that the conductivity of the desalted water in the first area is high, the desalted water in the first area can be automatically replaced, thereby avoiding the desalted water replacement not timely affecting the washing effect of the carbon fiber, thereby improving the washing effect of the carbon fiber. Moreover, since the control device is electrically connected to the second detection device, the desalted water can be selectively discharged into the first circulation device according to the conductivity of the desalted water in the storage device to assist in washing the carbon fiber to improve the washing effect, or the desalted water can be discharged into the second circulation device as a raw material for pickling batching, thereby reducing the production cost of the pickling batching. By recycling the desalted water in the storage device, the utilization rate of the desalted water is improved and the production cost is reduced.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0040] Figure 1 is a structural schematic diagram of a carbon fiber washing system according to an exemplary embodiment;

[0041] Figure 2 is a schematic top view of a water washing device according to an exemplary embodiment;

[0042] Figure 3 is a schematic flow chart of a carbon fiber washing method according to an exemplary embodiment;

[0043] Figure 4 is a schematic flow chart of a carbon fiber washing method according to another exemplary embodiment.

[0044] In the figure:

[0045] 10. Water washing device; 11. Baffle; 12. First area; 121. First detection device; 13. Second area; 20. Storage device; 21. Second detection device; 31. First circulation device; 32. Second circulation device; 321. Concentration detection device; 40. Pickling batching device; 50. Desalted water pipeline; 61. First filtering device; 62. Second filtering device; 70. Sewage pipeline; 80. Pickling liquid replenishing device. DETAILED DESCRIPTION

[0046] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0047] Polyacrylonitrile-based carbon fiber is an indispensable key material in the industrial field. The production technologies of polyacrylonitrile-based carbon fiber include wet spinning technology and dry-jet wet spinning technology. Dry-jet wet spinning technology has the advantages of high production efficiency, good carbon fiber quality, low production cost, and fewer fiber surface defects, and is more widely used. Since the surface of carbon fiber produced by dry-jet wet spinning technology is relatively smooth, electrochemical treatment is required to improve the bonding degree between carbon fiber and resin. However, after electrochemical treatment, electrolyte will remain on the surface of carbon fiber. In order to avoid the influence of electrolyte on the subsequent sizing process, carbon fiber is usually washed with water to remove the electrolyte on the surface.

[0048] In the related art, the desalted water is replaced by manually measuring the conductivity of the desalted water in the water washing device regularly, which can reduce the consumption of the desalted water. That is, when the conductivity is higher than the preset conductivity value, the desalted water in the water washing device needs to be replaced, and when the conductivity is lower than the preset conductivity value, the desalted water in the water washing device does not need to be replaced. However, due to the problem of untimely replacement in the manual regular measurement and replacement method, the washing effect is deteriorated. If the preset conductivity value is lowered, not only will the desalted water not be fully utilized, but the consumption of the desalted water will also increase, increasing the production cost.

[0049] Based on this, the present disclosure provides a carbon fiber washing system, which can automatically replace the desalted water in the first area when the control device detects that the conductivity of the desalted water in the first area is high, thereby avoiding the desalted water from being replaced in time and affecting the washing effect of the carbon fiber, so that the desalted water can be fully utilized, thereby reducing production costs. Moreover, the control device can selectively discharge the desalted water in the storage device into the first circulation device to assist in washing the carbon fiber or into the second circulation device as a raw material for pickling ingredients according to the detection results of the second detection device, thereby improving the utilization rate of the desalted water and reducing production costs.

[0050] The present disclosure provides a carbon fiber washing system. Figure 1 As shown, the carbon fiber washing system includes: a washing device 10, a storage device 20, a first circulation device 31, a second circulation device 32, an acid washing batching device 40 and a control device (not shown in the figure). A baffle 11 is provided in the washing device 10, and the baffle 11 divides the washing device 10 into a first area 12 and a second area 13. The first end of the first area 12 is used to connect with the desalted water pipeline 50. The first area 12 is provided with a first detection device 121, and the first detection device 121 is used to detect the first conductivity of the desalted water in the first area 12. The first end of the storage device 20 is connected to the second end of the first area 12. The second detection device 21 is provided in the storage device 20, and the second detection device 21 is used to detect the second conductivity of the desalted water in the storage device 20. The first end of the first circulation device 31 is connected to the second end of the storage device 20, and the second end of the first circulation device 31 is connected to the first end of the second area 13. The first end of the second circulation device 32 is connected to the third end of the storage device 20. The first end of the pickling batching device 40 is connected to the second end of the second circulation device 32. The control device is electrically connected to the water washing device 10, the storage device 20, the first circulation device 31, the second circulation device 32, the first detection device 121 and the second detection device 21. The control device is used to control the replacement of the desalted water in the water washing device 10 according to the detection results of the first detection device 121 and the second detection device 21, and to control the recycling of the desalted water in the storage device 20. Among them, the baffle 11 is connected to the bottom of the water washing device 10, and there is a gap between the baffle 11 and the top of the water washing device 10, and the gap is used for carbon fiber to pass through.

[0051] In this embodiment, the carbon fiber washing system includes a washing device, a storage device, a first circulation device, a second circulation device, a pickling batching device and a control device. The control device is electrically connected to the washing device, the storage device, the first circulation device, the second circulation device, the first detection device and the second detection device, and the storage device is connected between the washing device, the first circulation device and the second circulation device. Since the control device is electrically connected to the first detection device, when the control device detects that the conductivity of the desalted water in the first area is high, the desalted water in the first area can be automatically replaced, thereby avoiding the desalted water replacement not timely affecting the washing effect of the carbon fiber, thereby improving the washing effect of the carbon fiber. Moreover, since the control device is electrically connected to the second detection device, the desalted water can be selectively discharged into the first circulation device according to the conductivity of the desalted water in the storage device to assist in washing the carbon fiber to improve the washing effect, or the desalted water can be discharged into the second circulation device as a raw material for pickling batching, thereby reducing the production cost of the pickling batching. By recycling the desalted water in the storage device, the utilization rate of the desalted water is improved and the production cost is reduced.

[0052] For example, Figure 1 As shown, in the carbon fiber washing system, the carbon fiber after electrochemical treatment first passes through the second area 13 for auxiliary washing, and then enters the first area 12 for main washing through the gap between the baffle 11 and the top of the washing device 10. Since a large amount of electrolyte will remain on the surface of the carbon fiber after electrochemical treatment, the conductivity of the carbon fiber surface will be much greater than the conductivity of the desalted water in the storage device 20. The desalted water in the storage device 20 is circulated to the second area 13 by the first circulation device 31. Then, in the process of the carbon fiber entering the washing device 10, it can first enter the second area 13 for the first washing (auxiliary washing), and the electrolyte on the surface of the carbon fiber after the first washing is washed away, and the conductivity of the carbon fiber surface decreases. Then enter the first area 12 for the second washing (main washing), which can wash away the electrolyte remaining on the surface of the carbon fiber. The washing device is divided into two areas by the baffle 11, which can realize auxiliary washing and main washing of the carbon fiber, which can not only improve the utilization rate of the desalted water, but also improve the washing effect of the carbon fiber.

[0053] Exemplarily, when the first conductivity detected by the first detection device 121 is greater than the first preset conductivity, the control device controls the desalted water in the first area 12 to be discharged into the storage device 20, and controls the desalted water pipeline 50 to replenish the desalted water to the first area 12. When the second conductivity detected by the second detection device 21 is greater than the second preset conductivity, the control device controls the desalted water in the storage device 20 to be discharged into the second circulation device 32 to serve as a raw material for pickling ingredients. When the conductivity detected by the second detection device 21 is less than the second preset conductivity, the control device controls the desalted water in the storage device 20 to be discharged into the first circulation device 31, so as to be discharged into the second area 13 through the first circulation device 31 for auxiliary water washing of carbon fiber. Wherein, the first preset conductivity is less than the second preset conductivity.

[0054] For example, the first preset conductivity includes 900 us / cm, 1000 us / cm, 1100 us / cm, etc. The second preset conductivity includes 1450 us / cm, 1550 us / cm, 1650 us / cm, etc.

[0055] Exemplarily, the control device may include a distributed control system (DCS).

[0056] In one embodiment, the washing device 10 is provided with a first valve, a second valve and a third valve. The first valve is provided at the first end of the first area 12, the second valve is provided at the second end of the first area 12, and the third valve is provided at the first end of the second area 13. The storage device 20 is provided with a fourth valve and a fifth valve, the fourth valve is provided at the second end of the storage device 20, and the fifth valve is provided at the third end of the storage device 20. The control device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

[0057] In this embodiment, since the valve has a simple structure and a small size, the control device controls the replacement and recycling of desalted water by controlling the valve, thereby reducing the complexity of the carbon fiber washing system structure.

[0058] Exemplarily, when it is detected that the first conductivity is less than the first preset conductivity, the control device controls the first valve and the second valve to close, and the desalted water in the first area 12 can continue to be used for the main washing of the carbon fiber. When it is detected that the first conductivity is greater than the first preset conductivity, the control device controls the second valve to open, the fourth valve and the fifth valve to close, and the desalted water in the first area enters the storage device 20. Then the control device controls the first valve to open, the second valve to close, and the desalted water in the desalted water pipeline 50 enters the first area 12 to achieve the replacement of the desalted water in the first area 12.

[0059] Exemplarily, when it is detected that the second conductivity is less than the second preset conductivity, the control device controls the third valve and the fourth valve to open and the fifth valve to close, so as to discharge desalted water into the second area 13 through the first circulation device 31, so as to achieve auxiliary water washing of the carbon fiber. When it is detected that the second conductivity is greater than the second preset conductivity, the control device controls the third valve and the fourth valve to close and the fifth valve to open, so as to discharge desalted water into the pickling batching device 40 through the second circulation device 32, so as to use the desalted water as the raw material of the pickling batching.

[0060] In one embodiment, the carbon fiber washing system further includes a first filter device 61 and a second filter device 62. The first filter device 61 is disposed between the storage device 20 and the first circulation device 31, and is used to filter the desalted water flowing into the first circulation device 31. The second filter device 62 is disposed between the storage device 20 and the second circulation device 32, and is used to filter the desalted water flowing into the second circulation device 32.

[0061] In this embodiment, some fiber filaments may fall off the carbon fiber during the washing process of the carbon fiber. When the desalted water in the first area is replaced, these fiber filaments will enter the storage device along with the desalted water. When the desalted water in the storage device is recycled through the first circulation device and the second circulation device, the fiber filaments may block the pipeline. Moreover, when the desalted water enters the pickling batching device, the purity of the pickling ingredients will be affected due to the presence of fiber filaments in the desalted water. Therefore, by respectively providing filtering devices in the storage device and the first circulation device and the storage device and the second circulation device to filter the fiber filaments, not only the problem of pipeline blockage is avoided, but also the purity of the pickling ingredients can be improved, thereby improving the reliability of the carbon fiber washing system.

[0062] In one embodiment, the second end of the second area 13, the fourth end of the storage device 20, the third end of the first circulation device 31, and the third end of the second circulation device 32 are all connected to the sewage pipe 70. The second area 13, the storage device 20, the first circulation device 31, and the second circulation device 32 are all provided with liquid level devices, and the control device is electrically connected to the plurality of liquid level devices.

[0063] In this embodiment, by respectively setting liquid level devices in the second area, the storage device, the first circulation device and the second circulation device, when the liquid level in the second area, the storage device, the first circulation device and the second circulation device exceeds the preset liquid level, the control device can control the desalted water in the corresponding area to be discharged to the sewage pipe, thereby avoiding the desalted water level in the second area, the storage device, the first circulation device and the second circulation device being too high, and the desalted water overflowing or backflowing to other areas, thereby improving the reliability of the carbon fiber washing system. Moreover, by electrically connecting the control device to the second detection device, when the control device detects that the second conductivity is high and the desalted water in the storage device cannot be recycled, the control device can control the desalted water in the storage device to be directly discharged to the sewage pipe, further improving the reliability of the carbon fiber washing system.

[0064] Exemplarily, when the second conductivity detected by the second detection device 21 is greater than the third preset conductivity, the control device controls the desalted water in the storage device 20 to be discharged into the sewage pipe 70. The third preset conductivity is greater than the second preset conductivity.

[0065] Exemplarily, the third preset conductivity includes 2450 us / cm, 2500 us / cm, 2550 us / cm, etc.

[0066] Exemplarily, the second area 13 may also be provided with a third detection device, which is electrically connected to the control device, and is used to detect a third conductivity of the desalted water in the second area 13. When the third conductivity detected by the third detection device is greater than the fourth preset conductivity, the conductivity of the desalted water in the second area 13 is too high to assist in washing the carbon fiber, and the control device controls the desalted water in the second area 13 to be discharged into the sewage pipe 70.

[0067] Exemplarily, the first detection device 121 , the second detection device 21 , and the third detection device may include conductivity detection devices.

[0068] Exemplarily, the conductivity values ​​of the first preset conductivity, the second preset conductivity, the third preset conductivity, and the fourth preset conductivity may be preset in the control device.

[0069] In one embodiment, the second region 13 is provided with a sixth valve, the storage device 20 is provided with a seventh valve, the first circulation device 31 is provided with an eighth valve, and the second circulation device 32 is provided with a ninth valve. The sixth valve is provided at the second end of the second region 13, the seventh valve is provided at the fourth end of the storage device 20, the eighth valve is provided at the third end of the first circulation device 31, and the ninth valve is provided at the third end of the second circulation device 32. The control device is electrically connected to the sixth valve, the seventh valve, the eighth valve, and the ninth valve.

[0070] In this embodiment, since the valve has a simple structure and a small size, the control device controls the desalted water to be discharged to the sewage pipe by controlling the valve, thereby reducing the complexity of the structure of the carbon fiber washing system.

[0071] Exemplarily, when it is detected that the liquid level signal of the second area is greater than the first preset liquid level signal, the control device controls the sixth valve to open, and when it is detected that the liquid level signal of the second area is less than the first target liquid level signal, the control device controls the sixth valve to close. When it is detected that the liquid level signal of the storage device is greater than the second preset liquid level signal, the control device controls the seventh valve to open, and when it is detected that the liquid level signal of the storage device is less than the second target liquid level signal, the control device controls the seventh valve to close. When it is detected that the liquid level signal of the first circulation device is greater than the third preset liquid level signal, the control device controls the eighth valve to open, and when it is detected that the liquid level signal of the first circulation device is less than the third target liquid level signal, the control device controls the eighth valve to close. When it is detected that the liquid level signal of the second circulation device is greater than the fourth preset liquid level signal, the control device controls the ninth valve to open, and when it is detected that the liquid level signal of the second circulation device is less than the fourth target liquid level signal, the control device controls the ninth valve to close.

[0072] Exemplarily, the liquid level values ​​of the first preset liquid level signal, the second preset liquid level signal, the third preset liquid level signal, the fourth preset liquid level signal, the first target liquid level signal, the second target liquid level signal, the third target liquid level signal and the fourth target liquid level signal can be pre-set in the control device.

[0073] Exemplarily, when the third conductivity is detected to be greater than the fourth preset conductivity, the control device controls the sixth valve to open, and when the third conductivity is detected to be less than the fourth preset conductivity, the control device controls the sixth valve to close. When the second conductivity is detected to be greater than the third preset conductivity, the control device controls the seventh valve to open, and when the second conductivity is detected to be less than the third preset conductivity, the control device controls the seventh valve to close.

[0074] In one embodiment, if Figure 1 As shown, the second circulation device 32 is provided with a concentration detection device 321. The carbon fiber water washing system further includes a pickling liquid replenishing device 80, which is connected to the second end of the pickling batching device 40. The control device is electrically connected to the concentration detection device 321 and the pickling liquid replenishing device 80.

[0075] In this embodiment, the concentration detection device can determine the conductivity of the desalted water in the second circulation device, and the control device can determine the volume of pickling liquid that the pickling liquid replenishing device needs to replenish to the pickling batching device based on the conductivity of the desalted water in the second circulation device, thereby improving the purity of the pickling ingredients.

[0076] Exemplarily, the concentration detection device 321 includes a concentration detector and a liquid level detector, and the pickling liquid replenishing device 80 includes a pickling liquid of fixed concentration pre-configured using a powdered pickling medium.

[0077] In one embodiment, the carbon fiber washing system further includes an alarm device (not shown in the figure), and the alarm device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

[0078] In this embodiment, by electrically connecting the alarm device to the valve, it is possible to detect whether the valve can be opened and closed normally, thereby improving the reliability of the carbon fiber washing system.

[0079] Exemplarily, the alarm device is electrically connected to the fifth valve, the sixth valve, the seventh valve, the eighth valve and the ninth valve.

[0080] Exemplarily, the alarm device is electrically connected to the control device, and when the alarm device detects a valve abnormality, the control device can activate the sound and light alarm system.

[0081] In one embodiment, if Figure 2 As shown, there are multiple first detection devices 121. The multiple first detection devices 121 are all electrically connected to the control device, and the multiple first detection devices 121 are all arranged at the bottom of the washing device 10.

[0082] In this embodiment, since each first detection device is electrically connected to the control device, the control device can determine the first conductivity of the first area according to the average value detected by the plurality of first detection devices, thereby improving the accuracy of determining the first conductivity.

[0083] Exemplarily, the number of the first detection devices 121 may be 2, 3, or 4.

[0084] For example, Figure 1 to Figure 2As shown, when the first detection device 121 detects that the first conductivity is less than 1000us / cm, the control device controls the first valve and the second valve to close, and the desalted water in the first area 12 can continue to be used for the main water washing of the carbon fiber. When the first detection device 121 detects that the first conductivity is ≥1000us / cm, the control device controls the second valve to open, the fourth valve, the fifth valve and the seventh valve to close, and the desalted water in the first area enters the storage device 20. Then the control device controls the first valve to open, the second valve to close, and the desalted water in the desalted water pipeline 50 enters the first area 12 to achieve the replacement of the desalted water in the first area 12. When 1000us / cm≤the second conductivity≤1550us / cm is detected, the control device controls the third valve and the fourth valve to open and the fifth valve, the sixth valve and the seventh valve to close, so as to discharge the desalted water into the second area 13 through the first circulation device 31 to achieve auxiliary water washing of the carbon fiber. When it is detected that 1550us / cm<the second conductivity≤2500us / cm, the control device controls the fourth valve, the seventh valve and the ninth valve to be closed and the fifth valve to be opened, so as to discharge desalted water into the pickling batching device 40 through the second circulation device 32, so as to use the desalted water as the raw material of the pickling batching. When the second conductivity is greater than 2550us / cm, the control device controls the seventh valve to be opened and the fourth valve and the fifth valve to be closed, so as to discharge the desalted water in the storage device 20 into the sewage pipe 70.

[0085] An exemplary embodiment of the present disclosure provides a carbon fiber water washing method, which is applied to the above-mentioned carbon fiber water washing system. Figure 3 As shown, the carbon fiber washing method includes:

[0086] S100: Determine a first electrical conductivity of desalted water in a first region.

[0087] S200: When the first conductivity is greater than a first preset conductivity, discharge the desalted water in the first area into a storage device and replenish the desalted water to the first area.

[0088] S300: Detect the second conductivity of the desalted water in the storage device.

[0089] S400: When the second conductivity is less than the second preset conductivity, discharge the desalted water in the storage device into the first circulation device. When the second conductivity is greater than the second preset conductivity, discharge the desalted water in the storage device into the second circulation device.

[0090] The first preset conductivity is smaller than the second preset conductivity.

[0091] In this embodiment, the conductivity of the desalted water in the first area is determined to determine whether the desalted water in the first area needs to be replaced. When the first conductivity is greater than the first preset conductivity, the desalted water in the first area is discharged into the storage device and the desalted water is replenished in the first area, so that when the conductivity of the desalted water in the first area does not meet the requirements, the desalted water in the first area is replaced. The second conductivity of the desalted water in the storage device is detected to determine whether the desalted water in the storage device can be recycled. When the second conductivity is less than the second preset conductivity, the desalted water in the storage device is discharged into the first circulation device to recycle the desalted water for water washing. When the second conductivity is greater than the second preset conductivity, the desalted water in the storage device is discharged into the second circulation device to recycle the desalted water for the raw materials of the pickling ingredients. By replacing the desalted water in the first area when the first conductivity is greater than the first preset conductivity, the washing effect of the carbon fiber is avoided to be affected by the untimely replacement of the desalted water, thereby improving the washing effect of the carbon fiber. Furthermore, since the desalted water in the storage device can be selectively used for washing carbon fiber or for pickling ingredients according to the second electrical conductivity, the desalted water in the storage device can be recycled, thereby improving the utilization rate of the desalted water and reducing production costs.

[0092] In one embodiment, the carbon fiber washing method further comprises:

[0093] When the second electrical conductivity is greater than the third preset electrical conductivity, the desalted water in the storage device is discharged into the sewage pipeline.

[0094] The third preset conductivity is greater than the second preset conductivity.

[0095] In this embodiment, when the second conductivity is greater than the third preset conductivity, the desalted water in the storage device cannot be recycled. If the desalted water in the storage device is used, the washing effect of the carbon fiber and the purity of the pickling ingredients will be reduced. By discharging the desalted water into the sewage pipe when the second conductivity is greater than the third preset conductivity, the reliability of the carbon fiber washing method can be improved.

[0096] An exemplary embodiment of the present disclosure provides a carbon fiber washing method, such as Figure 4 As shown, the carbon fiber washing method includes:

[0097] S500: Determine a first electrical conductivity of desalted water in a first region.

[0098] S510: When the first conductivity is less than 1000 us / cm, there is no need to replace the desalted water in the first area.

[0099] S520: When the first conductivity is ≥1000 us / cm, the desalted water in the first area is discharged into the storage device and the desalted water is replenished to the first area.

[0100] S530: Detect the second conductivity of the desalted water in the storage device.

[0101] S540, when 1000 us / cm≤the second conductivity≤1550 us / cm, discharge the desalted water of the storage device into the first circulation device.

[0102] S550: When 1550 us / cm<the second conductivity≤2500 us / cm, the desalted water of the storage device is discharged into the second circulation device.

[0103] S560: When the second conductivity is greater than 2550 us / cm, the desalted water in the storage device is discharged into the sewage pipeline.

[0104] In this embodiment, by replacing the desalted water in the first area when the first conductivity is greater than the first preset conductivity, the washing effect of the carbon fiber is avoided to be affected by the untimely replacement of the desalted water, thereby improving the washing effect of the carbon fiber. Moreover, since the desalted water in the storage device can be selectively used for washing the carbon fiber or for pickling ingredients according to the second conductivity, the desalted water in the storage device can be recycled, thereby improving the utilization rate of the desalted water and reducing the production cost.

[0105] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of the present disclosure.

[0106] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, apparatuses (devices) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0107] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0108] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0109] In the present disclosure, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the article or device comprising the elements.

[0110] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0111] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the intent of the present disclosure also includes these modifications and variations.

Claims

1. A carbon fiber washing system, characterized in that: The carbon fiber washing system comprises: A water washing device, wherein a baffle is provided in the water washing device, wherein the baffle divides the water washing device into a first area and a second area, wherein a first end of the first area is used to be connected to a desalted water pipeline, and a first detection device is provided in the first area, wherein the first detection device is used to detect a first conductivity of the desalted water in the first area; A storage device, wherein a first end of the storage device is connected to a second end of the first region; a second detection device is disposed in the storage device, and the second detection device is used to detect a second conductivity of the desalted water in the storage device; a first circulation device, wherein a first end of the first circulation device is connected to a second end of the storage device, and a second end of the first circulation device is connected to a first end of the second region; a second circulation device, wherein a first end of the second circulation device is connected to a third end of the storage device; A pickling batching device, wherein a first end of the pickling batching device is connected to a second end of the second circulation device; A control device, the control device being electrically connected to the water washing device, the storage device, the first circulation device, the second circulation device, the first detection device, and the second detection device; the control device is used to control the replacement of desalted water in the water washing device and the recycling of desalted water in the storage device according to the detection results of the first detection device and the second detection device; The baffle is connected to the bottom of the water washing device, and there is a gap between the baffle and the top of the water washing device, and the gap is used for carbon fiber to pass through.

2. The carbon fiber washing system according to claim 1, characterized in that: The water washing device is provided with a first valve, a second valve and a third valve; the first valve is provided at the first end of the first area, the second valve is provided at the second end of the first area, and the third valve is provided at the first end of the second area; The storage device is provided with a fourth valve and a fifth valve, the fourth valve is provided at the second end of the storage device, and the fifth valve is provided at the third end of the storage device; Wherein, the control device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

3. The carbon fiber washing system according to claim 1, characterized in that: The carbon fiber washing system also includes: a first filtering device, the first filtering device being disposed between the storage device and the first circulation device and being used for filtering the desalted water flowing into the first circulation device; A second filtering device is provided between the storage device and the second circulation device, and is used for filtering the desalted water flowing into the second circulation device.

4. The carbon fiber washing system according to claim 1, characterized in that: The second end of the second area, the fourth end of the storage device, the third end of the first circulation device and the third end of the second circulation device are all connected to the sewage pipe; The second area, the storage device, the first circulation device and the second circulation device are all provided with liquid level devices, and the control device is electrically connected to the plurality of liquid level devices.

5. The carbon fiber washing system according to claim 4, characterized in that: The second area is provided with a sixth valve, the storage device is provided with a seventh valve, the first circulation device is provided with an eighth valve, and the second circulation device is provided with a ninth valve; the sixth valve is provided at the second end of the second area, the seventh valve is provided at the fourth end of the storage device, the eighth valve is provided at the third end of the first circulation device, and the ninth valve is provided at the third end of the second circulation device; Wherein, the control device is electrically connected to the sixth valve, the seventh valve, the eighth valve and the ninth valve.

6. The carbon fiber washing system according to claim 1, characterized in that: The second circulation device is provided with a concentration detection device; The carbon fiber washing system also includes: A pickling liquid replenishing device, the pickling liquid replenishing device is connected to the second end of the pickling batching device; Wherein, the control device is electrically connected to the concentration detection device and the pickling liquid replenishing device.

7. The carbon fiber washing system according to claim 2, characterized in that: The carbon fiber washing system also includes: An alarm device is electrically connected to the first valve, the second valve, the third valve, the fourth valve and the fifth valve.

8. The carbon fiber washing system according to any one of claims 1 to 7, characterized in that: There are multiple first detection devices; the multiple first detection devices are all electrically connected to the control device, and the multiple first detection devices are all arranged at the bottom of the water washing device.

9. A carbon fiber washing method, applied to the carbon fiber washing system according to any one of claims 1 to 8, characterized in that: The carbon fiber washing method comprises: determining a first electrical conductivity of desalinated water within the first region; When the first electrical conductivity is greater than a first preset electrical conductivity, the desalted water in the first area is discharged into a storage device and the desalted water is replenished in the first area; detecting a second conductivity of the desalted water in the storage device; When the second electrical conductivity is less than a second preset electrical conductivity, the desalted water in the storage device is discharged into a first circulation device; when the second electrical conductivity is greater than a second preset electrical conductivity, the desalted water in the storage device is discharged into a second circulation device; Wherein, the first preset conductivity is smaller than the second preset conductivity.

10. The carbon fiber washing method according to claim 9, characterized in that: The method further comprises: When the second electrical conductivity is greater than a third preset electrical conductivity, discharging the desalted water in the storage device into a sewage pipeline; Wherein, the third preset conductivity is greater than the second preset conductivity.

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