Sizing device
By designing an external and internal circulation glue-holding section, and combining components such as pressure rollers, overflow holes, and filters, the problem of poor uniformity in carbon fiber sizing was solved, achieving an efficient and stable sizing process, and improving equipment lifespan and sizing quality.
Patent Information
- Application Number
- CN202520167865.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing carbon fiber sizing methods suffer from poor sizing uniformity on ultra-wide production lines, resulting in uneven distribution of the sizing agent, which affects the bonding effect between the carbon fiber and the matrix resin and may damage the equipment.
The design employs an external and internal circulation glue-holding section to form a glue circulation path. Multiple glue outlets and glue circulation branches ensure uniform distribution of the glue within the internal circulation glue-holding section. Combined with the setting of pressure rollers and overflow holes, glue deposition and accumulation are prevented. Filters and stirring devices are used to maintain the purity and stability of the glue.
It improves the uniformity of sizing, reduces local concentration differences, extends equipment life, ensures sizing quality and production stability, and reduces resource waste and environmental pollution.
Smart Images
Figure CN223823823U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of fiber production, in particular to a sizing device. BACKGROUND
[0002] With the rapid growth of the application demand of carbon fiber, the application process of carbon fiber product and application puts forward higher requirements to the application process of carbon fiber, and the sizing effect of carbon fiber greatly influences the combination effect of carbon fiber and matrix resin, so the uniformity and stability of the sizing process of carbon fiber become an important process control point in the manufacturing process of carbon fiber.
[0003] In the prior art, the methods for sizing carbon fiber mainly include transfer method, dipping method and spraying method. The dipping method is usually adopted in industrial application, and the ideal sizing effect should make the surface of each carbon fiber monofilament be uniformly sized. The current domestic carbonization production line with a width of 4 meters usually has 400-500 parallel running tows, and each tow of carbon fiber usually has 6000-24000 monofilaments. Each tow of carbon fiber needs to have suitable properties such as bundling, wear resistance, opening and expansion. The sizing method in the prior art often exposes the problem of poor sizing uniformity when facing the ultra-wide production line. Due to the uneven distribution of sizing agent in the glue tank, or due to the mutual interference of carbon fiber tows in the parallel running process, the sizing agent cannot uniformly cover each monofilament. In addition, the sizing agent tank is also prone to store microbeads and gel mud, which not only affects the uniform distribution of the sizing agent, but also may cause damage to the sizing equipment. CONTENT OF THE UTILITY MODEL
[0004] In order to solve the above technical problems, the utility model provides a sizing device.
[0005] The utility model provides a sizing device, the sizing device includes the outer circulation glue containing portion and the inner circulation glue containing portion who connects along the glue solution transmission direction, the outer circulation glue containing portion with the inner circulation glue containing portion forms the glue solution circulation flow path, the inner circulation glue containing portion is used for sizing the fiber to be sized,
[0006] The bottom of the inner circulation glue containing portion is provided with a first glue inlet and a plurality of first glue outlets, the outer circulation glue containing portion is provided with a second glue outlet and a second glue inlet, the glue solution circulation flow path includes a glue inlet flow path and a glue outlet flow path, the glue inlet flow path communicates the second glue outlet with the first glue inlet, the glue outlet flow path communicates the first glue outlet with the second glue inlet,
[0007] The sizing device further includes a plurality of glue solution circulation branches, one first glue outlet communicates one glue solution circulation branch, one end of the glue solution circulation branch is connected with the first glue outlet, the other end of the glue solution circulation branch is connected with the glue outlet flow path.
[0008] In some embodiments of this disclosure, the internal circulation glue-holding section includes a tank for holding glue liquid. The internal circulation glue-holding section is provided with a plurality of pressure rollers arranged along the running direction of the fiber to be sized. The plurality of pressure rollers are all arranged parallel to the width of the tank. The pressure rollers are used to press the fiber to be sized into the internal circulation glue-holding section along the length direction of the internal circulation glue-holding section.
[0009] In some embodiments of this disclosure, the center of the bottom of the inner circulation glue-holding part protrudes towards the opening of the inner circulation glue-holding part, and the periphery of the bottom of the part extends away from the opening of the inner circulation glue-holding part.
[0010] In some embodiments of this disclosure, the first glue inlet is located at the center of the bottom of the tank, and the first glue outlet is located around the bottom of the tank.
[0011] Along the length of the internal circulation glue-holding section, a plurality of first glue outlets are symmetrically arranged on both sides of the first glue inlet.
[0012] In some embodiments of this disclosure, an overflow hole is also provided on the tank wall of the inner circulation glue-holding part, and the overflow hole is connected to the outer circulation glue-holding part through a return pipe.
[0013] In some embodiments of this disclosure, the top surface of the external circulation glue-holding part is further provided with a third glue inlet, a first filter is installed on the third glue inlet, a first valve is provided at the inlet of the first filter, and the first filter is connected to an external glue-holding device.
[0014] In some embodiments of this disclosure, a second filter is provided on each of the adhesive circulation branches.
[0015] In some embodiments of this disclosure, both the first filter and the second filter are flange-type double-layer disc filters.
[0016] In some embodiments of this disclosure, a stirring device is provided inside the external circulation gel holding section.
[0017] In some embodiments of this disclosure, a diaphragm pump is provided in both the glue inlet flow path and the glue outlet flow path.
[0018] The sizing device provided by this utility model has at least the following advantages:
[0019] The sizing device provided by this utility model, through the setting of an external circulation glue-holding section and an internal circulation glue-holding section, forms a circulating flow path for the glue liquid inside the device. This ensures a continuous and stable supply of glue liquid to the internal circulation glue-holding section, thereby achieving efficient sizing of the fibers to be sized and meeting the sizing requirements. By setting multiple first glue outlets and glue liquid circulation branches, the glue liquid entering the internal circulation glue-holding section forms a flow path from one glue inlet to multiple glue outlets, allowing the glue liquid to flow in multiple directions. This helps ensure the uniform distribution of the glue liquid within the internal circulation glue-holding section, thereby improving the uniformity of sizing, reducing local concentration differences during the sizing process, improving the overall sizing quality, preventing the formation of "foam" or glue clumps on the internal circulation glue-holding section, reducing the deposition and accumulation of glue liquid inside the device, helping to keep the tank clean and unobstructed, and extending the service life of the equipment. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the overall structure of the sizing device provided in an exemplary embodiment of this utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the internal circulation glue-holding part provided for an exemplary embodiment of the present invention.
[0023] The following labels are shown in the attached diagram:
[0024] 1. External circulation glue collection section; 101. Second glue outlet; 102. Second glue inlet; 103. Third glue inlet; 104. First filter; 105. First valve; 106. Stirring device;
[0025] 2. Internal circulation glue-holding section; 201. First glue inlet; 202. First glue outlet; 203. Pressure roller; 204. Tank bottom; 205. Overflow hole; 206. Return pipeline;
[0026] 3. Glue inlet flow path; 4. Glue outlet flow path;
[0027] 5. Adhesive circulation branch; 501. Second filter; 502. Second valve; 503. Third valve;
[0028] 6. Diaphragm pump. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0031] With the rapid growth in demand for carbon fiber applications, carbon fiber products and applications have placed higher requirements on the processability of carbon fiber. Among them, the sizing effect of carbon fiber has a great influence on the bonding effect between carbon fiber and matrix resin. Therefore, the uniformity and stability of the carbon fiber sizing process have become a particularly important process control point in the carbon fiber manufacturing process.
[0032] In existing technologies, carbon fiber sizing methods mainly include transfer, impregnation, and spraying. Impregnation is commonly used in industrial applications. Ideally, sizing should result in uniform sizing on the surface of each carbon fiber filament. Currently, a 4-meter wide carbonization production line in China typically has 400-500 bundles operating in parallel, with each bundle containing 6000-24000 filaments. Each bundle needs to possess suitable properties such as bundle cohesion, abrasion resistance, fiber opening, and width expansion. Existing sizing methods often exhibit poor sizing uniformity when used in ultra-wide production lines. Uneven distribution of the sizing agent in the glue tank, or interference between carbon fiber bundles during parallel operation, prevents the sizing agent from uniformly covering each filament. Furthermore, micro-beads and gel residue easily accumulate in the sizing agent glue tank, which not only affects the uniform distribution of the sizing agent but may also damage the sizing equipment.
[0033] The following is combined Figures 1-2 The embodiments of this utility model are further described below.
[0034] To address the aforementioned technical problems, this utility model provides a sizing device. It is understood that this sizing device can be applied to carbon fiber sizing, as well as sizing other fibers with similar issues. Through the configuration of an external and internal circulation glue-holding section, the glue solution forms a circulating flow path within the device, ensuring a continuous and stable supply of glue solution to the internal circulation glue-holding section. This allows for efficient sizing of the fibers to be sized, meeting their sizing requirements. By setting multiple first glue outlets and glue solution circulation branches, the glue solution entering the internal circulation glue-holding section forms a flow path from one inlet to multiple outlets, enabling the glue solution to flow in multiple directions. This helps ensure uniform distribution of the glue solution within the internal circulation glue-holding section, thereby improving sizing uniformity, reducing local concentration differences during the sizing process, improving overall sizing quality, preventing the formation of "foam" or glue deposits in the internal circulation glue-holding section, reducing glue deposition and accumulation within the device, helping to maintain the cleanliness and unobstructed flow of the tank, and extending the equipment's service life.
[0035] An exemplary embodiment of this disclosure provides a sizing apparatus, such as Figure 1 and Figure 2 As shown, the sizing device includes an external circulation glue-holding section 1 and an internal circulation glue-holding section 2 connected along the glue transfer direction. The external circulation glue-holding section 1 can be a glue bucket, and the internal circulation glue-holding section 2 can be a glue tank. The external circulation glue-holding section 1 and the internal circulation glue-holding section 2 form a glue circulation path. The internal circulation glue-holding section 2 is used to sizing the fibers to be sized. The glue includes a water-based epoxy resin sizing agent. In use, the fibers to be sized are pressed into the internal circulation glue-holding section 2. Through the arrangement of the external circulation glue-holding section 1 and the internal circulation glue-holding section 2, a circulation path is formed within the device, ensuring a continuous and stable supply of glue to the internal circulation glue-holding section 2, thereby achieving efficient sizing of the fibers to be sized and meeting the sizing requirements.
[0036] Reference Figure 1 and Figure 2 The bottom of the inner circulation glue-holding section 2 is provided with a first glue inlet 201 and a plurality of first glue outlets 202, and the outer circulation glue-holding section 1 is provided with a second glue outlet 101 and a second glue inlet 102. For example, referring to Figure 1The second glue inlet 102 and the second glue outlet 101 are both located on the tank wall of the external circulation glue holding part 1, with the second glue inlet 102 located above the second glue outlet 101. The glue circulation path includes a glue inlet path 3 and a glue outlet path 4. The glue inlet path 3 connects the second glue outlet 101 to the first glue inlet 201, and the first glue outlet 202 of the glue outlet path 4 connects to the second glue inlet 102. The sizing device also includes multiple glue circulation branches 5, with one first glue outlet 202 connected to one glue circulation branch 5. One end of the glue circulation branch 5 is connected to the first glue outlet 202, and the other end of the glue circulation branch 5 is connected to the glue outlet path 4. By setting multiple first glue outlets 202 and multiple glue circulation branches 5, the glue entering the inner circulation glue holding section 2 forms a flow path from one glue inlet to multiple glue outlets in the inner circulation glue holding section 2, so that the glue can flow in multiple directions. This helps to ensure the uniform distribution of the glue in the inner circulation glue holding section 2, thereby improving the uniformity of sizing, helping to reduce local concentration differences during the sizing process, improving the overall sizing quality, preventing the generation of "foam" or glue lumps on the inner circulation glue holding section 2, reducing the deposition and accumulation of glue inside the device, helping to keep the tank clean and unobstructed, and extending the service life of the equipment.
[0037] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 The inner circulation glue-holding section 2 includes a tank for holding glue solution. Multiple pressure rollers 203 are arranged within the inner circulation glue-holding section 2, running along the direction of the fibers to be sized. The pressure rollers 203 are parallel to the width of the tank. The pressure rollers 203 press the fibers to be sized into the inner circulation glue-holding section 2 along its length. By setting the pressure rollers 203, the fibers to be sized can be stably and evenly pressed into the tank along the length of the inner circulation glue-holding section 2, increasing the contact area and contact time between the fibers and the glue solution, thereby improving sizing efficiency. Simultaneously, the pressure rollers 203 also provide a guide for the fibers. When the fibers pass through, the pressure rollers 203 guide the fibers along a predetermined path, ensuring that the fibers do not entangle, allowing the fibers to contact the glue solution evenly and continuously, thus achieving uniform sizing.
[0038] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 The center of the bottom 204 of the inner circulation glue-holding section 2 protrudes towards the opening of the inner circulation glue-holding section 2, and the periphery of the bottom 204 extends away from the opening of the inner circulation glue-holding section 2. For example, referring to... Figure 2The bottom 204 of the inner circulation glue-holding section 2 can be an arc-shaped surface that is higher in the middle and lower around the edges, or it can be an inclined surface that is higher in the middle and lower around the edges. By setting the bottom 204 to be higher in the middle and lower around the edges, it helps the glue to form a better circulation flow in the tank. This allows the glue to be pushed upward in the central area of the bottom 204, thus spreading outwards and forming a more uniform fluid distribution. Since the bottom 204 gradually slopes down around the edges, fibers are less likely to accumulate at the bottom 204 when passing through the tank. This helps to keep the tank unobstructed, ensuring that the fibers can pass through the tank smoothly, improving sizing efficiency, preventing the formation of "foam" or glue clumps on the inner circulation glue-holding section 2, reducing the deposition and accumulation of glue inside the device, helping to keep the tank clean and unobstructed, and extending the service life of the equipment.
[0039] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 The first glue inlet 201 is located at the center of the tank bottom 204, and the first glue outlet 202 is located around the perimeter of the tank bottom 204; along the length of the inner circulation glue-holding section 2, multiple first glue outlets 202 are symmetrically arranged on both sides of the first glue inlet 201. (Refer to...) Figure 2 There are two first glue outlets 202, and the two first glue outlets 202 are symmetrically distributed along the first glue inlet 201. After the glue enters the tank from the central first glue inlet 201, it can spread more smoothly to the surrounding area. Since the first glue outlets 202 are symmetrically distributed on both sides of the first glue inlet 201, the resistance encountered by the glue during the flow process will be relatively small, thereby improving the efficiency and stability of fluid flow. At the same time, the glue forms a "double circulation" flow from the middle to both sides in the inner circulation glue holding part 2, which has a better sizing and wetting effect. At the same time, setting the glue inlet in the middle position and setting the glue outlet at the edge position helps to reduce the accumulation of glue at the bottom of the tank and helps to keep the tank clean and unobstructed.
[0040] In some embodiments of this utility model, reference is made to Figure 1 An overflow hole 205 is also provided on the tank wall of the inner circulation glue-holding section 2, and the overflow hole 205 is connected to the outer circulation glue-holding section 1 through a return pipe 206. For example, see... Figure 1An overflow hole 205 is provided on each of the two opposite tank walls of the internal circulation glue-holding section 2. The overflow hole 205 is connected to the external circulation glue-holding section 1 through a return pipe 206. In other embodiments, a third filter can be provided on the return pipe 206. The third filter can be a flange-type double-layer disc filter, with an upper filtration accuracy of 100-300 mesh and a lower filtration accuracy of 400-1000 mesh. The filter material is 304 stainless steel, and the filter plate diameter is 200-500 mm and the thickness is 3-5 mm. When the glue in the internal circulation glue-holding section 2 exceeds a certain capacity, the overflow hole 205 can automatically discharge the excess liquid to prevent liquid overflow and waste and pollution. By setting the height of the overflow hole 205, the adhesive can be kept within a preset liquid level range, ensuring the stability of the liquid level in the inner circulation adhesive holding section 2 and avoiding the adverse effects of too much or too little adhesive on fiber sizing. The adhesive overflowing from the inner circulation adhesive holding section 2 can be returned to the outer circulation adhesive holding section 1 through the return pipe 206, realizing the recycling of adhesive and improving resource utilization.
[0041] In some embodiments of this utility model, reference is made to Figure 1 The top surface of the external circulation glue-holding section 1 is also provided with a third glue inlet 103, on which a first filter 104 is installed. A first valve 105 is provided at the inlet of the first filter 104, and the first filter 104 is connected to the external glue-holding equipment. The first filter 104 can effectively filter out impurities, particles, and contaminants in the external glue solution, ensuring that the glue solution entering the external circulation glue-holding section 1 is free of impurities. The first valve 105 can flexibly control the flow rate of the glue solution and adjust the supply speed of the glue solution as needed, ensuring the stability and continuity of the production process. At the same time, the first valve 105 can also effectively prevent the glue solution from flowing back in the external circulation glue-holding section 1, avoiding glue waste and contamination.
[0042] In some embodiments of this utility model, reference is made to Figure 1A second filter 501 is installed on each adhesive circulation branch 5. The installation of a second filter 501 on each adhesive circulation branch 5 ensures that the recycled adhesive maintains a high level of purity and stability, helping to reduce adhesive deterioration and performance degradation caused by impurity accumulation. Filtration and recycling of the adhesive reduces the need for new adhesive, lowering production costs. It also helps reduce waste generation, meeting environmental protection and sustainable development requirements. For example, a second valve 502 is installed upstream of each second filter 501, and a third valve 503 is installed downstream of each second filter 501. The second valve 502 allows for convenient adjustment of the fluid flow into the second filter 501. When the filter needs to be replaced, the adhesive flow can be cut off by closing the second valve 502, ensuring operational safety. The second valve 502 and the third valve 503 can effectively prevent the adhesive from flowing back during maintenance, avoiding damage to the second filter 501. By adjusting the opening of the second valve 502, the impact of the adhesive on the filter can be reduced, extending the service life of the second filter 501.
[0043] In some embodiments of this utility model, reference is made to Figure 1 Both the first filter 104 and the second filter 501 are flange-type double-layer disc filters. The upper layer of the flange-type double-layer disc filter has a filtration accuracy of 100-300 mesh, and the lower layer has a filtration accuracy of 400-1000 mesh. The filters are made of 304 stainless steel, with filter plate diameters of 200-500 mm and thicknesses of 3-5 mm. The flange-type double-layer disc filters adopt a standardized design, facilitating installation, disassembly, and replacement, ensuring tight connections and good sealing to prevent adhesive leakage.
[0044] In some embodiments of this utility model, reference is made to Figure 1 An agitator 106 is installed inside the external circulation adhesive container 1. The agitator 106 includes a paddle with adjustable rotation speed. The agitator 106 effectively promotes the flow and mixing of the adhesive solution inside the external circulation adhesive container 1. Through agitation, the components in the adhesive solution are more evenly distributed, avoiding localized excessively high or low concentrations. The agitator 106 can periodically or continuously agitate the adhesive solution, preventing sedimentation and stratification, helping to maintain the stability and uniformity of the adhesive solution, and ensuring consistent performance during application.
[0045] In some embodiments of this utility model, reference is made to Figure 1A diaphragm pump 6 is installed on both the glue inlet flow path 3 and the glue outlet flow path 4. The diaphragm pump 6 achieves volume change through the reciprocating motion of the diaphragm, which can quickly and accurately draw glue from the external circulation glue holding section 1 or the internal circulation glue holding section 2, helping to shorten the circulation cycle. The glue can be induced to flow into the pump by itself without manual operation or the addition of liquid suction equipment. Therefore, the installation of diaphragm pumps 6 on the glue inlet flow path 3 and the glue outlet flow path 4 can ensure a stable supply of glue and avoid production interruption.
[0046] The above-described contents can be implemented individually or in combination in various ways, and all such variations are within the protection scope of this utility model.
[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A sizing device, characterized in that, The sizing device includes an outer circulation glue-holding section and an inner circulation glue-holding section connected along the glue transfer direction. The outer circulation glue-holding section and the inner circulation glue-holding section form a glue circulation flow path. The inner circulation glue-holding section is used to sizing the fibers to be sized. The bottom of the inner circulation glue-holding part is provided with a first glue inlet and a plurality of first glue outlets, and the outer circulation glue-holding part is provided with a second glue outlet and a second glue inlet. The glue circulation flow path includes a glue inlet flow path and a glue outlet flow path. The glue inlet flow path connects the second glue outlet with the first glue inlet, and the glue outlet flow path connects the first glue outlet with the second glue inlet. The sizing device further includes multiple adhesive circulation branches, with one first adhesive outlet connected to one of the adhesive circulation branches. One end of the adhesive circulation branch is connected to the first adhesive outlet, and the other end of the adhesive circulation branch is connected to the adhesive flow path.
2. The sizing device according to claim 1, characterized in that, The internal circulation glue-holding section includes a tank for holding glue liquid. Multiple pressure rollers are arranged inside the internal circulation glue-holding section along the running direction of the fiber to be sized. The multiple pressure rollers are arranged parallel to the width of the tank. The pressure rollers are used to press the fiber to be sized into the internal circulation glue-holding section along the length direction of the internal circulation glue-holding section.
3. The sizing device according to claim 2, characterized in that, The center of the bottom of the inner circulation glue-holding section protrudes towards the opening of the inner circulation glue-holding section, and the periphery of the bottom of the section extends away from the opening of the inner circulation glue-holding section.
4. The sizing device according to claim 3, characterized in that, The first glue inlet is located at the center of the bottom of the tank, and the first glue outlet is located around the bottom of the tank. Along the length of the internal circulation glue-holding section, a plurality of first glue outlets are symmetrically arranged on both sides of the first glue inlet.
5. The sizing device according to claim 1, characterized in that, An overflow hole is also provided on the tank wall of the inner circulation glue-holding section, and the overflow hole is connected to the outer circulation glue-holding section through a return pipe.
6. The sizing device according to claim 1, characterized in that, The top surface of the external circulation glue-holding section is also provided with a third glue inlet, and a first filter is installed on the third glue inlet. A first valve is provided at the inlet of the first filter, and the first filter is connected to the external glue equipment.
7. The sizing device according to claim 6, characterized in that, A second filter is provided on each of the adhesive circulation branches.
8. The sizing device according to claim 7, characterized in that, Both the first filter and the second filter are flange-type double-layer disc filters.
9. The sizing device according to claim 1, characterized in that, The external circulation gel holding section is equipped with a stirring device.
10. The sizing device according to claim 1, characterized in that, A diaphragm pump is installed in both the glue inlet flow path and the glue outlet flow path.