Carbon fiber stock solution filtering device and carbon fiber precursor spinning machine

Abstract

The utility model relates to the field of carbon fiber spinning equipment, and discloses a carbon fiber stock solution filtering device and a carbon fiber precursor spinning machine, the carbon fiber stock solution filtering device comprises a filter element, the filter element comprises a filter element body and a connecting part connected to the top end of the filter element body, and the filter element body is provided with a cavity used for containing a carbon fiber stock solution; the filter cartridge is connected outside the filter element body in a sleeving manner and is detachably connected to the connecting part, the filter cartridge comprises a filter screen arranged on the periphery of the filter element body in a sleeving manner, and the filter screen is arranged to be capable of filtering impurities in the carbon fiber stock solution. According to the technical scheme, the filter cartridge is connected to the periphery of the filter element body containing the carbon fiber stock solution in the sleeving mode, the filter screen in the filter cartridge is used for filtering the carbon fiber stock solution, non-woven filter cloth is replaced, the filter screen does not need to be frequently replaced, when the filter screen is blocked, only the filter cartridge needs to be detached and cleaned, repeated utilization is achieved, and the cost is reduced. And the treatment cost of hazardous chemicals is effectively reduced.

Description

Technical Field

[0001] The utility model relates to carbon fiber spinning equipment, in particular to a carbon fiber stock solution filtering device and a carbon fiber raw fiber spinning machine. Background Art

[0002] Carbon fiber has the advantages of high strength and light weight, and is widely used in aerospace, rail transportation, medical equipment and other fields. In the carbon fiber production process, since there are impurities such as undissolved polymers in the carbon fiber stock solution, it is necessary to filter and separate the impurities in the carbon fiber stock solution.

[0003] At present, most of the filtering devices for impurities in carbon fiber stock solution use filter cloth to wrap the filter element, and filter the carbon fiber stock solution flowing out of the filter element through the filter cloth to filter the impurities therein. Among them, Chinese utility model patent CN217351634U discloses a para-aramid spinning box filtering device, and specifically discloses a blind pipe for accommodating the stock solution to be filtered, and a plurality of filter holes are opened on the cylinder of the blind pipe. The filter cloth is set on the blind pipe and fixed by a clamping ring, so as to filter the impurities in the stock solution through the filter cloth. However, due to the short service life of the filter cloth and its weak filtering ability, it is easy to cause blockage and frequent replacement of the filter cloth in the process of filtering the carbon fiber stock solution. Moreover, the replaced filter cloth is a hazardous chemical, and it is necessary to wait for a manufacturer with hazardous chemical qualifications to accept centralized treatment, and the treatment cost is high.

[0004] Therefore, it is urgent to propose corresponding solutions to the problems that the filter cloth used to filter carbon fiber raw liquid has low filtering capacity, is a hazardous chemical, has high filter cloth processing costs, and has low filtering efficiency. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem that a large amount of filter cloth needs to be replaced in the prior art, the cost of handling the replaced filter cloth is high and the filtration efficiency is low, and to provide a filtering device for a carbon fiber precursor spinning machine and a carbon fiber precursor spinning machine, the filtering device is simple to operate and can be reused.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a carbon fiber stock liquid filtering device on the one hand, comprising: a filter element, the filter element comprising a filter element body and a connecting portion connected to the top of the filter element body, the filter element body having a cavity for accommodating the carbon fiber stock liquid; a filter cartridge, the filter cartridge is sleeved on the outside of the filter element body and detachably connected to the connecting portion, the filter cartridge comprising a filter screen sleeved on the periphery of the filter element body, the filter screen being configured to filter impurities in the carbon fiber stock liquid.

[0007] In some embodiments, the filter screen includes a first filter screen and a second filter screen spaced apart from the inside to the outside, the mesh number of the first filter screen is 20-40 meshes, and the mesh number of the second filter screen is 400-800 meshes.

[0008] In some embodiments, the filter cartridge includes a filter frame having a vertical bracket extending from top to bottom and circular brackets respectively connected to the upper and lower ends of the vertical bracket, and the filter screen is mounted on the filter frame.

[0009] In some embodiments, the filter cartridge includes a connecting flange connected to the top of the filter frame, and the connecting flange is bolted to the connecting portion.

[0010] In some embodiments, a sealing gasket is provided at the connection between the connecting flange and the connecting portion.

[0011] In some embodiments, a plurality of flow guide holes are evenly arranged on the side wall of the filter element body.

[0012] In some embodiments, a feed inlet is formed on a side wall of the connecting portion, and the feed inlet is connected to the cavity of the filter element body.

[0013] In some embodiments, a threaded hole for connecting a lifting device is formed on the top of the connecting portion.

[0014] In some embodiments, the filter is made of stainless steel.

[0015] A second aspect of the utility model provides a carbon fiber precursor spinning machine, comprising the above-mentioned carbon fiber stock solution filtering device.

[0016] In the above technical solution, the filter cartridge is sleeved on the outer periphery of the filter element body containing the carbon fiber stock solution, and the filter screen in the filter cartridge is used to filter the carbon fiber stock solution, replacing the non-woven filter cloth, and there is no need to frequently replace the filter screen. When the filter screen is blocked, the filter cartridge only needs to be removed and cleaned. Therefore, the carbon fiber stock solution filtering device is easy to replace and clean the filter screen, realizes repeated use, and effectively reduces the cost of hazardous chemical treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the filter element and filter cartridge of the carbon fiber stock liquid filtering device disclosed in the utility model;

[0018] Figure 2 yes Figure 1 A half-section view of a filter element in a carbon fiber stock liquid filtering device disclosed in;

[0019] Figure 3 yes Figure 1A schematic structural diagram of a filter cartridge in a carbon fiber stock solution filtering device disclosed in;

[0020] Figure 4 The utility model discloses a structural schematic diagram of a carbon fiber precursor spinning machine.

[0021] Description of Reference Numerals

[0022] 1 Filter element 11 Filter element body

[0023] 12 Connection 2 Filter cartridge

[0024] 21 Filter 22 Filter frame

[0025] 23 Connecting flange 3 Sealing gasket

[0026] 4 Diversion hole 5 Feed inlet

[0027] 6 Threaded hole 7 Metering pump

[0028] 8 Spinning assembly 9 Coagulation bath

[0029] 10 Upper guide roller 13 Lower guide roller

[0030] 14 two baths DETAILED DESCRIPTION

[0031] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0032] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0033] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0034] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0035] It should also be noted that in the description of the present disclosure, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0036] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] In order to overcome the problem that a large amount of filter cloth needs to be replaced and the cost of handling the replaced filter cloth is high, Figures 1 to 4 As shown, the utility model provides a filtering device for a carbon fiber precursor spinning machine and a carbon fiber precursor spinning machine. The filtering device is easy to operate and can be reused.

[0039] Combination Figures 1 to 3 As shown, the utility model provides a carbon fiber stock solution filtering device on one hand, comprising:

[0040] The filter element 1 comprises a filter element body 11 and a connecting portion 12 connected to the top of the filter element body 11, and the filter element body 11 has a cavity for containing carbon fiber stock solution;

[0041] The filter cartridge 2 is sleeved on the outside of the filter element body 11 and detachably connected to the connecting portion 12. The filter cartridge 2 includes a filter screen 21 sleeved on the outer periphery of the filter element body 11. The filter screen 21 is configured to filter impurities in the carbon fiber stock solution.

[0042] Specifically, refer to Figures 1 to 3 As shown, by sleeve-fitting the filter cartridge 2 on the outer periphery of the filter element body 11 containing the carbon fiber stock solution, the filter screen 21 in the filter cartridge 2 is used to filter the carbon fiber stock solution, replacing the non-woven filter cloth, and there is no need to frequently replace the filter screen 21. When the filter screen 21 is clogged, the filter cartridge 2 only needs to be removed and cleaned. While ensuring effective filtration, it is also easier to replace and clean the filter screen 21, achieving repeated use, and effectively reducing the cost of hazardous chemical treatment.

[0043] In some embodiments, the filter screen 21 includes a first filter screen and a second filter screen which are spaced apart from the inside to the outside, the mesh number of the first filter screen is 20-40 meshes, and the mesh number of the second filter screen is 400-800 meshes.

[0044] Specifically, the first filter is close to the filter element body 11, and its mesh number can be 20-40 meshes, so as to support the second filter, and avoid the second filter being tilted due to the impact force due to the large mesh number and small aperture of the second filter. It can be understood that the first filter has a small mesh number, which mainly serves the purpose of supporting the second filter, and the mesh number of the second filter can be 400-800 meshes, which mainly serves the purpose of filtering impurities in the carbon fiber stock solution.

[0045] Wherein, in some embodiments, reference Figure 1 and Figure 3 As shown, the filter cartridge 2 includes a filter frame 22, which has a vertical bracket extending from top to bottom and circular brackets respectively connected to the upper and lower ends of the vertical bracket, and the filter 21 is placed on the filter frame 22. This arrangement is to further fix and support the filter 21, so as to prevent the filter 21 from tilting under the action of impact force during the process of filtering impurities in the carbon fiber stock solution.

[0046] Furthermore, combined with Figure 1 and Figure 3 As shown, the filter cartridge 2 includes a connecting flange 23 connected to the top of the filter frame 22, and the connecting flange 23 is bolted to the connecting portion 12. It can be understood that the connecting flange 23 is bolted to the connecting portion 12, so that the filter element 1 and the filter cartridge 2 are detachably connected, which is convenient for the staff to separate the filter element 1 and the filter cartridge 2.

[0047] Furthermore, in some embodiments, a sealing gasket 3 may be provided at the connection between the connecting flange 23 and the connecting portion 12. Figure 1As shown, a sealing gasket 3 is provided at the connection between the connecting flange 23 and the connecting portion 12 to effectively prevent the carbon fiber stock solution in the filter element body 11 from leaking from the connection between the connecting flange 23 and the connecting portion 12 .

[0048] Wherein, in some embodiments, reference Figure 1 and Figure 2 As shown, a plurality of guide holes 4 are evenly provided on the side wall of the filter element body 11. It is understandable that the outer wall of the filter element body 11 can be provided with a circle of guide holes 4, and when the filtering device is working, the carbon fiber stock solution in the filter element body 11 can flow out through the guide holes 4 and then be filtered through the filter screen 21.

[0049] In some embodiments, a feed port 5 is provided on the side wall of the connecting portion 12, and the feed port 5 is connected to the cavity of the filter element body 11. Figure 1 and Figure 2 As shown, the outlet end of the feed port 5 can be connected to the inlet end of the cavity of the filter element body 11, so that the carbon fiber stock solution can flow into the interior of the filter element body 11 through the feed port 5, thereby performing subsequent filtering operations.

[0050] Furthermore, combined with Figure 1 and Figure 2 As shown, a threaded hole 6 for connecting a lifting device is provided at the top of the connecting portion 12. It is understandable that the connecting end of the lifting device can be threadedly matched with the threaded hole 6. When the filter element 1 needs to be removed, the lifting device can be threadedly connected to the threaded hole 6, thereby starting the lifting device to lift and remove the filter element 1 from the filter cartridge 2.

[0051] In some embodiments, the filter 21 can be made of stainless steel, so that when the filter 21 is blocked, the filter 21 can be replaced and cleaned with clean water and ultrasound to remove impurities in the filter 21, thereby achieving reuse and reducing the cost of handling hazardous chemicals.

[0052] The second aspect of the utility model provides a carbon fiber precursor spinning machine, comprising the above-mentioned carbon fiber raw liquid filtering device. Figure 4 As shown, the filtering device can be connected to the coagulation bath 9 through a pipeline, and a spinneret assembly 8 is installed in the coagulation bath 9 for spinning. Specifically, the carbon fiber stock solution filtered by the filtering device can be transported to the coagulation bath 9 through the metering pump 7, and the solvent in the coagulation bath 9 reacts with the carbon fiber stock solution, and cooperates with the spinneret assembly 8 to form carbon fiber precursors, so that the upper guide roller 10 and the lower guide roller 13 are used to transport the carbon fiber precursors to the second bath 14 for further reaction.

[0053] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0054] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A carbon fiber stock solution filtering device, characterized in that: include: A filter element (1), the filter element (1) comprising a filter element body (11) and a connecting portion (12) connected to the top end of the filter element body (11), the filter element body (11) having a cavity for accommodating carbon fiber stock solution; A filter cartridge (2), the filter cartridge (2) being sleeved on the outside of the filter element body (11) and being detachably connected to the connecting portion (12), the filter cartridge (2) comprising a filter screen (21) sleeved on the outer periphery of the filter element body (11), the filter screen (21) being configured to filter impurities in the carbon fiber stock solution.

2. The carbon fiber stock solution filtering device according to claim 1, characterized in that: The filter screen (21) comprises a first filter screen and a second filter screen which are arranged from the inside to the outside at intervals, the mesh number of the first filter screen is 20-40 meshes, and the mesh number of the second filter screen is 400-800 meshes.

3. The carbon fiber stock solution filtering device according to claim 1, characterized in that: The filter cartridge (2) comprises a filter screen frame (22), the filter screen frame (22) having a vertical bracket extending from top to bottom and circular brackets respectively connected to the upper and lower ends of the vertical bracket, and the filter screen (21) is placed on the filter screen frame (22).

4. The carbon fiber stock solution filtering device according to claim 3, characterized in that: The filter cartridge (2) comprises a connecting flange (23) connected to the top end of the filter frame (22), and the connecting flange (23) is bolted to the connecting portion (12).

5. The carbon fiber stock solution filtering device according to claim 4, characterized in that: A sealing gasket (3) is provided at the connection between the connecting flange (23) and the connecting portion (12).

6. The carbon fiber stock solution filtering device according to claim 1, characterized in that: A plurality of flow guide holes (4) are evenly arranged on the side wall of the filter element body (11).

7. The carbon fiber stock solution filtering device according to claim 1, characterized in that: A feed inlet (5) is provided on the side wall of the connecting portion (12), and the feed inlet (5) is connected to the cavity of the filter element body (11).

8. The carbon fiber stock solution filtering device according to claim 7, characterized in that: A threaded hole (6) for connecting a lifting device is provided at the top of the connecting portion (12).

9. The carbon fiber stock solution filtering device according to claim 1, characterized in that: The filter screen (21) is made of stainless steel.

10. A carbon fiber precursor spinning machine, characterized in that: It comprises a carbon fiber stock solution filtering device according to any one of claims 1 to 9.

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