Oiling device for graphene precursor spinning

Abstract

The utility model discloses an oiling device for graphene precursor spinning. The oiling device comprises an oiling tank, a distribution mesh plate is mounted in the oiling tank; an inner cavity of the oiling groove is divided into a circulating groove and an oiling agent groove by the distribution mesh plate; a frame is arranged above the oiling agent tank; pressing rod height adjusting devices with static pressing rods are mounted above the oiling agent tank and below the frame; the side, away from the circulating groove, of the oiling groove is connected with a liquid discharging groove body. A liquid accumulation tank body is connected to the side, far away from the circulating tank, of the liquid discharge tank body; a baffle is further arranged on the side edge of the liquid accumulation tank body; a flow accumulation plate is connected between the side lower part, close to the liquid accumulation tank body, of the baffle and the liquid accumulation tank body; and a deoiling device is mounted above the flow accumulation plate. Before the tows enter a drying working section, redundant oil in the tows is removed in advance through the oil removing device, time and energy consumption needed for achieving the preset effect during tow drying are reduced, and drying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of graphene precursor production technology, specifically to an oiling device used in the graphene precursor production process. Background Technology

[0002] In the production of graphene precursor fibers, oiling is a crucial step to ensure the smooth completion of the entire spinning process and the preparation of high-quality, high-performance carbon fibers. It also significantly impacts the hydrophilicity, bundling properties, fiber splitting ability, and fuzziness of the graphene precursor fibers. If the oil content is too high, excessive powder is generated during carbonization, causing blockages in the carbonization furnace and affecting the strength of the carbon fibers, preventing them from meeting usage requirements. Conversely, if the oil content is too low, the graphene precursor fibers have high ash content and reduced fiber strength, decreasing their spinnability and impacting yield.

[0003] The oiling rate of graphene precursor has a significant impact on the fuzzing, breakage, and bundling of graphene precursor during the pre-oxidation process. The uniformity of oiling on graphene precursor greatly affects the uniformity of carbon fiber precursor performance. Therefore, controlling the oiling rate and uniformity of graphene precursor is very important.

[0004] In existing oiling devices, graphene precursor fibers are completely immersed in oil in an oiling tank, and driven by guide rollers submerged in the oil at the bottom. After being oiled in the oiling tank, the graphene precursor fiber bundles directly enter the drying section. The existing oiling devices have the following problems in the production process of graphene precursor fibers:

[0005] 1. Graphene precursors need to pass through the bottom of the guide rollers, and the bottom of the guide rollers is immersed in the oil in the upper oil tank. The operating space left for production personnel is limited and it is difficult to observe the condition of the filament bundle. It is difficult to thread the filaments at the beginning of production.

[0006] 2. Because the bottom of the guide roller is immersed in the oil in the upper oil tank, if the roller gets entangled during production, it is very difficult to clean.

[0007] 3. Existing oiling devices can only adjust the wetting effect of graphene precursor fibers by adjusting the oil content and liquid level in the oiling tank, and the adjustment range is very limited.

[0008] 4. After the graphene precursor fibers are soaked in the oil bath and then directly enter the drying section, the liquid oil content in the fiber bundle is still very high. The time and energy required to dry the fiber bundle to reach the predetermined oil content are very high, resulting in low drying efficiency. Utility Model Content

[0009] The present invention aims to provide an oiling device for spinning graphene precursor fibers. This device is easy to observe and operate during the spinning process, and can adjust the filament wetting length. Excess oil can be removed from the filament before drying.

[0010] To solve the above-mentioned technical problems, the technical solution of this utility model for an oiling device for spinning graphene precursor fibers is as follows:

[0011] The system includes an upper oil tank; a distribution mesh plate is installed inside the upper oil tank; the distribution mesh plate divides the inner cavity of the upper oil tank into a circulation tank and an oil agent tank; a frame is placed above the oil agent tank; a pressure rod height adjustment device with a static pressure rod is installed above the oil agent tank and below the frame; the pressure rod height adjustment device is used to adjust the height of the static pressure rod; a drain tank is connected to the side of the upper oil tank away from the circulation tank; a collection tank is connected to the side of the drain tank away from the circulation tank; a baffle is also provided on the side of the collection tank; a flow accumulation plate is connected between the baffle and the collection tank on the lower side near the collection tank; the flow accumulation plate is inclined downward from the end connected to the baffle to the end connected to the collection tank; an oil removal device for removing excess oil agent from the filament bundle is installed above the flow accumulation plate; a distribution pipe is connected inside the upper oil tank; the drain tank and the collection tank are respectively connected to the distribution pipe through pipes; a pump is installed on the pipes.

[0012] A first guide roller and a second guide roller located above the first guide roller are installed above the flow plate; the degreasing device includes a pressure roller attached to the side of the second guide roller and a mounting seat installed on the side of the baffle; a scraper rod is connected to the side of the mounting seat.

[0013] The mounting base has a fiber splitting device connected above its scraper rod; the fiber splitting device is equipped with a fiber splitter.

[0014] A threading shaft is installed above the circulation groove.

[0015] Three pressure bar height adjustment devices are installed above the oil tank; two pressure bar height adjustment devices are installed below the frame, located on the left and right sides of the frame respectively.

[0016] The pressure bar height adjustment device includes a mounting plate, a guide rail connected below the mounting plate, a slider vertically slidably connected to the guide rail, and a vertical screw threadedly connected to the slider; the vertical screw is rotatably connected between the mounting plate and the guide rail; the stationary pressure bar is mounted on the slider.

[0017] The technical effects that this utility model can achieve are:

[0018] 1. The first guide roller and the second guide roller of this utility model are set outside the upper oil tank. The pressure rods set in the upper oil tank are all stationary pressure rods (pressure rods in a stationary state, which cannot rotate). During the production process, no wire will be wrapped on the stationary pressure rods. Since the first guide roller and the second guide roller are set outside the upper oil tank, the operating space is large and the cleaning is easier after the wire wrapping occurs.

[0019] 2. The frame set in the upper oil tank can be manually lifted and removed, which facilitates observation and increases the operating space when performing threading and other operations on the stationary pressure bar below the frame;

[0020] 3. The pressure bar height adjustment device can adjust the position of the stationary pressure bar relative to the guide rail by rotating the vertical screw, thereby adjusting the length of the filament bundle impregnation. The impregnation effect of the filament bundle can be adjusted by adjusting the length of the filament bundle impregnation.

[0021] 4. The degreasing device is equipped with a scraper and a pressure roller. Before the yarn bundle enters the drying section, the scraper and pressure roller remove excess oil from the yarn bundle in advance, reducing the time and energy required for the yarn bundle to achieve the desired drying effect and improving drying efficiency. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of an oiling device for spinning graphene precursor fibers according to this utility model;

[0024] Figure 2 This is a schematic diagram of the pressure bar height adjustment device. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] See Figures 1 to 2 .

[0027] An oiling device for spinning graphene precursor fibers includes an oiling tank 1; a distribution mesh plate 12 is installed inside the oiling tank 1, dividing the inner cavity of the oiling tank 1 into a circulation tank 17 and an oiling agent tank 16; a wire guide spool 2 is installed above the circulation tank 17, and a frame 4 is placed above the oiling agent tank 16; a pressure rod height adjustment device 31 with a stationary pressure rod 311 is installed above the oiling agent tank 16 and below the frame 4, the pressure rod height adjustment device 31 being used to adjust the height of the stationary pressure rod 311; specifically, the pressure rod height adjustment device 31 includes a mounting plate 315 and a guide rail 31 connected below the mounting plate 315. 3. A slider 312 is vertically slidably connected to the guide rail 313, and a vertical screw 314 is threadedly connected to the slider 312; the vertical screw 314 is rotatably connected between the mounting plate 315 and the guide rail 313, and a stationary pressure rod 311 is installed on the slider 312; more specifically, three pressure rod height adjustment devices 31 are installed above the oil tank 16, and two pressure rod height adjustment devices 31 are installed below the frame 4, located on the left and right sides of the frame 4 respectively. The pressure rod height adjustment device 31 can control the slider 312 to move vertically along the guide rail 313 by rotating the vertical screw 314, thereby controlling the height of the pressure rod 311.

[0028] The upper oil tank 1 is connected to a drain tank 14 on the side away from the circulation tank 17. The drain tank 14 is connected to a collection tank 15 on the side away from the circulation tank 17. A baffle 54 is also provided on the side of the collection tank 15. A flow-collecting plate 55 is connected between the baffle 54 and the collection tank 15 on the lower side of the baffle 54. The flow-collecting plate 55 slopes downwards from the end connected to the baffle 54 towards the end connected to the collection tank 15. An oil-removing device for removing excess oil from the filament bundle is installed above the flow-collecting plate 55. A distribution pipe 11 is connected inside the upper oil tank 1. The drain tank 14 and the collection tank 15 are respectively connected to the distribution pipe 11 via pipes 18. A pump is installed on the pipes 18. The oil overflowing from the oil tank 16 will flow into the drain tank 14 for collection. During the process of removing excess oil from the fiber bundle by the oil removal device, the excess oil will fall onto the accumulation plate 55 and flow into the accumulation tank 15 for collection along the guide of the accumulation plate 55. The oil collected in the drain tank 14 and the accumulation tank 15 will be pumped back to the circulation tank 17 through the pipe 18 by turning on the pump. The oil in the circulation tank 17 will be de-aerated and filtered by the distribution mesh plate 12, so that it flows back to the oil tank 16 more evenly, thus being recycled.

[0029] Specifically, a first guide roller 61 and a second guide roller 62 located above the first guide roller 61 are installed above the flow plate 55; the degreasing device includes a pressure roller 7 attached to the side of the second guide roller 62 and a mounting seat 53 installed on the side of the baffle 54, with a scraper rod 51 connected to the side of the mounting seat 53; the present invention removes excess oil from the filament bundle by scraping off excess oil with the scraper rod and pressing it with the pressure roller 7, thereby achieving the technical effect of removing excess oil; before entering the drying section, the scraper rod 51 and the pressure roller 7 pre-remove some of the oil from the filament bundle, reducing the time and energy required for the filament bundle to achieve the desired drying effect and improving the drying efficiency.

[0030] The mounting base 53 has a fiber splitting device 5 connected above its scraper rod 51. The fiber splitting device 5 is equipped with a fiber splitter 52, which helps to split the fiber bundle.

[0031] Instructions for use: See reference Figure 1In this invention, the filament bundle is first introduced by the guide shaft 2, and then immersed in the oil by passing through the stationary pressure rod 311, which is connected to the height adjustment device 31 of each pressure rod. During the oiling process, the frame 4 can be manually lifted and removed. This facilitates observation and increases the operating space when threading the filaments or performing other operations on the stationary pressure rod 311 below the frame 4. Furthermore, the pressure rod height adjustment device can adjust the position of the stationary pressure rod 311 relative to the guide rail 313 by rotating the vertical screw 314, thereby adjusting the length of the filament bundle immersed in the oil. The wetting effect of the filament bundle is adjusted by adjusting the wetting length of the filament bundle. After the filament bundle is oiled, it passes through the first guide roller 61, the scraper rod 51, the filament splitter 52 and the second guide roller 62 in sequence to be filament bundled out. When it passes the scraper rod 51, the scraper rod 51 will scrape off the excess oil on the filament bundle. When it passes the second guide roller 62, the pressure roller 7 will press off the excess oil on the filament bundle. The excess oil will fall onto the accumulation plate 55 and flow into the liquid collection tank 15 along the guide of the accumulation plate 55 for collection.

Claims

1. A graphene filament spinning oiling device for graphene filament spinning, comprising an oiling tank (1); characterized in that: A distribution mesh plate (12) is installed inside the upper oil tank (1); the distribution mesh plate (12) divides the inner cavity of the upper oil tank (1) into a circulation tank (17) and an oil tank (16); a frame (4) is placed above the oil tank (16); a pressure rod height adjustment device (31) with a static pressure rod (311) is installed above the oil tank (16) and below the frame (4); the pressure rod height adjustment device (31) is used to adjust the height of the static pressure rod (311); a drain tank (14) is connected to the side of the upper oil tank (1) away from the circulation tank (17); a collection tank is connected to the side of the drain tank (14) away from the circulation tank (17). Body (15); a baffle (54) is also provided on the side of the liquid collection tank (15); a flow accumulation plate (55) is connected between the baffle (54) and the liquid collection tank (15) on the lower side near the liquid collection tank (15); the flow accumulation plate (55) is inclined downward from the end connected to the baffle (54) to the end connected to the liquid collection tank (15); an oil removal device for removing excess oil from the filament bundle is installed above the flow accumulation plate (55); a distribution pipe (11) is connected inside the upper oil tank (1); the drain tank (14) and the liquid collection tank (15) are respectively connected to the distribution pipe (11) through pipes (18); a pump body is installed on the pipes (18).

2. The oiling device for graphene filament spinning according to claim 1, characterized in that: A first guide roller (61) and a second guide roller (62) located above the first guide roller (61) are installed above the flow plate (55); the degreasing device includes a pressure roller (7) attached to the side of the second guide roller (62) and a mounting seat (53) installed on the side of the baffle (54); a scraper rod (51) is connected to the side of the mounting seat (53).

3. The oiling device for graphene filament spinning according to claim 2, characterized in that: The mounting base (53) has a fiber splitting device (5) connected above its scraper rod (51); the fiber splitting device (5) is equipped with a fiber splitter (52).

4. The oiling device for graphene filament spinning according to claim 1, characterized in that: A threading shaft (2) is installed above the circulation groove (17).

5. The oiling device for graphene filament spinning according to claim 1, characterized in that: Three pressure bar height adjustment devices (31) are installed above the oil tank (16); two pressure bar height adjustment devices (31) are installed below the frame (4) on the left and right sides of the frame (4).

6. A graphene filament spinning oiling device according to claim 5, wherein: The pressure bar height adjustment device (31) includes a mounting plate (315), a guide rail (313) connected below the mounting plate (315), a slider (312) vertically slidably connected to the guide rail (313), and a vertical screw (314) threadedly connected to the slider (312); the vertical screw (314) is rotatably connected between the mounting plate (315) and the guide rail (313); the stationary pressure bar (311) is mounted on the slider (312).

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