Carbon fiber pre-oxidation box

Abstract

The utility model discloses a carbon fiber pre-oxidation box, which belongs to the technical field of oxidation equipment and comprises a box body, a first partition plate is fixedly connected onto the inner wall of the left side of the box body, and a second partition plate positioned below the first partition plate is fixedly connected onto the inner wall of the right side of the box body. The box body is divided into a first heating cavity, a second heating cavity and a third heating cavity through a first partition plate and a second partition plate from top to bottom, an air inlet fan is arranged at the bottom of the box body, an electric heating wire is arranged at the air outlet end of the air inlet fan, an oil removing box is installed on the top of the box body, a connecting pipe is connected between the box body and the oil removing box, and a filter is arranged on the inner side of the oil removing box. Through the arrangement of the first partition plate and the second partition plate, hot air blown in by the air inlet fan sequentially passes through the third heating cavity, the second heating cavity and the first heating cavity, so that the temperature of the third heating cavity, the temperature of the second heating cavity and the temperature of the first heating cavity are sequentially reduced, one heat source can gradually heat carbon fiber precursors, and the working efficiency is high.

Description

Technical Field

[0001] This utility model relates to an oxidation device, and more particularly to a carbon fiber pre-oxidation box, belonging to the technical field of oxidation equipment. Background Technology

[0002] The pre-oxidation of carbon fiber precursor involves a series of complex reactions in air at 200–400°C under appropriate tension, including molecular chain cyclization, cross-linking, dehydrogenation, and oxidation. This process transforms the precursor into a thermally stable pyridine ring ladder structure with semiconductor resistance, improving its heat resistance, flame retardancy, and electrical conductivity. In existing technologies, the typical low-temperature pre-oxidation process for carbon fiber involves placing the precursor in a low-temperature pre-oxidation furnace and gradually heating it to achieve pre-oxidation. However, this method requires heating equipment in each zone of the furnace, leading to waste. Furthermore, the gas produced after heating the precursor contains tar, which, if directly discharged, wastes resources and pollutes the outside air.

[0003] Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The main purpose of this utility model is to provide a carbon fiber pre-oxidation box to overcome the shortcomings of the existing technology.

[0005] The objective of this utility model can be achieved by adopting the following technical solution:

[0006] A carbon fiber pre-oxidation box includes a box body and carbon fiber precursors installed inside the box body. A first partition is fixedly connected to the left inner wall of the box body, and a second partition located below the first partition is fixedly connected to the right inner wall of the box body. The box body is divided into a first heating chamber, a second heating chamber, and a third heating chamber from top to bottom by the first partition and the second partition. An air inlet fan is provided at the bottom of the box body, and an electric heating wire is provided at the air outlet of the air inlet fan. An oil removal box is installed at the top of the box body, and a connecting pipe connects the box body and the oil removal box. A filter is provided inside the oil removal box, and an exhaust fan located on one side of the oil removal box is installed at the top of the box body.

[0007] Preferably, one end of the first partition is provided with a first rotating roller, and one end of the second partition is provided with a second rotating roller.

[0008] Preferably, a third roller and a fourth roller located below the third roller are provided between the first partition and the second partition.

[0009] Preferably, both the upper and lower surfaces of the first partition and the second partition are connected with arrayed baffles.

[0010] Preferably, the first partition has a feed inlet at the top and the second partition has a discharge outlet at the bottom.

[0011] Preferably, the front of the box is equipped with a door, and the door is equipped with a handle.

[0012] Preferably, the door is equipped with high-temperature resistant glass.

[0013] Preferably, the filter is an activated carbon filter, and the oil removal tank has an installation groove that matches the filter.

[0014] Preferably, an oil collection drawer is movably installed at the bottom of the oil removal tank, and a handle is connected to the front of the oil collection drawer.

[0015] Preferably, the oil removal tank has a drawer slot that mates with the oil collection drawer.

[0016] The beneficial technical effects of this utility model are as follows: According to the carbon fiber pre-oxidation box of this utility model, the box body is divided into a first heating chamber, a second heating chamber, and a third heating chamber from top to bottom by the first and second partitions. The carbon fiber filaments enter the box body from the first heating chamber, pass through the second heating chamber, and exit from the third heating chamber. The hot air blown in by the blower passes through the third heating chamber, the second heating chamber, and the first heating chamber in sequence, so that the temperature of the third heating chamber, the second heating chamber, and the first heating chamber decreases in sequence. Thus, a single heat source can achieve gradual heating of the carbon fiber filaments, resulting in high working efficiency. Through the setting of the oil removal box and filter, the hot air enters the oil removal box after passing through the first heating chamber and is filtered by the filter to remove the tar, preventing air pollution. Through the setting of the oil collection drawer, the filtered tar can be collected and recycled to prevent waste. Through the setting of the arrayed baffles, the carbon fiber filaments are prevented from tangling together. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the overall structure according to a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a box structure according to a preferred embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of a box structure according to a preferred embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of a box structure according to a preferred embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the oil removal tank structure according to a preferred embodiment of the present invention.

[0023] In the diagram: 1. Box body; 2. First partition; 3. Second partition; 4. First heating chamber; 5. Second heating chamber; 6. Third heating chamber; 7. Feed inlet; 8. Discharge outlet; 9. Air inlet fan; 10. Electric heating wire; 11. Oil removal box; 12. Connecting pipe; 13. Filter; 14. Vacuum pump; 15. Carbon fiber filament; 16. First roller; 17. Second roller; 18. Third roller; 19. Fourth roller; 20. Stop bar; 21. Box door; 22. Handle; 23. High temperature resistant glass; 24. Mounting groove; 25. Oil collection drawer; 26. Pull handle; 27. Drawer slot. Detailed Implementation

[0024] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0025] like Figures 1-6 As shown, the carbon fiber pre-oxidation box provided in this embodiment includes a box body 1 and carbon fiber filaments 15 installed inside the box body 1. A first partition 2 is fixedly connected to the left inner wall of the box body 1, and a second partition 3 located below the first partition 2 is fixedly connected to the right inner wall of the box body 1. The box body 1 is divided into a first heating chamber 4, a second heating chamber 5 and a third heating chamber 6 from top to bottom by the first partition 2 and the second partition 3. An air inlet fan 9 is provided at the bottom of the box body 1, and an electric heating wire 10 is provided at the air outlet of the air inlet fan 9. An oil removal box 11 is installed at the top of the box body 1, and a connecting pipe 12 is connected between the box body 1 and the oil removal box 11. A filter 13 is provided inside the oil removal box 11, and an exhaust fan 14 located on one side of the oil removal box 11 is installed at the top of the box body 1. With the first partition 2 and the second partition 3, the housing 1 is divided from top to bottom into a first heating chamber 4, a second heating chamber 5, and a third heating chamber 6. The carbon fiber filament 15 enters the housing 1 from the first heating chamber 4, passes through the second heating chamber 5, and exits from the third heating chamber 6. The hot air blown in by the blower 9 passes through the third heating chamber 6, the second heating chamber 5, and the first heating chamber 4 in sequence, causing the temperature of the third heating chamber 6, the second heating chamber 5, and the first heating chamber 4 to decrease sequentially. Thus, a single heat source can gradually heat the carbon fiber filament 15, resulting in high working efficiency. With the setting of the oil removal box 11 and the filter 13, the hot air enters the oil removal box 11 after passing through the first heating chamber 4 and is filtered by the filter 13 to remove the tar, preventing air pollution.

[0026] In this embodiment, as Figure 1 , Figure 4 and Figure 5As shown, a first roller 16 is provided at one end of the first partition 2, a second roller 17 is provided at one end of the second partition 3, a third roller 18 and a fourth roller 19 located below the third roller 18 are provided between the first partition 2 and the second partition 3, and arrayed baffles 20 are connected to the upper and lower surfaces of the first partition 2 and the second partition 3, respectively. A feed inlet 7 is provided at the top of the first partition 2, and a discharge outlet 8 is provided at the bottom of the second partition 3. The first roller 16 and the second roller 17 support the carbon fiber filament 15, and the third roller 18 and the fourth roller 19 lengthen the path of the carbon fiber filament 15 inside the housing 1, improving working efficiency. The arrayed baffles 20 prevent the carbon fiber filament 15 from tangling together.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a door 21 is installed on the front of the enclosure 1, a handle 22 is installed on the door 21, and a high-temperature resistant glass 23 is provided on the door 21. The door 21 facilitates maintenance, and the high-temperature resistant glass 23 facilitates observation.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 6 As shown, filter 13 is an activated carbon filter. The oil removal tank 11 has a mounting groove 24 that mates with the filter 13. An oil collection drawer 25 is movably mounted on the bottom of the oil removal tank 11. A handle 26 is connected to the front of the oil collection drawer 25. The oil removal tank 11 has a drawer slot 27 that mates with the oil collection drawer 25. The oil collection drawer 25 allows for the collection and recycling of filtered tar, preventing waste.

[0029] In this embodiment, as Figures 1-6 As shown in the figure, the working process of a carbon fiber pre-oxidation box provided in this embodiment is as follows:

[0030] Step 1: In use, the carbon fiber filament 15 enters the housing 1 from the first heating chamber 4, passes through the second heating chamber 5 and exits from the third heating chamber 6 for heating;

[0031] Step 2: Hot air is introduced by the air inlet fan 9 and the electric heating wire 10, and passes through the third heating chamber 6, the second heating chamber 5 and the first heating chamber 4 in sequence for pre-oxidation;

[0032] Step 3: Then, hot air enters the oil removal tank 11 through the connecting pipe 12 and is filtered by the filter 13 to remove the tar. The filtered tar falls into the oil collection drawer 25 for collection. The oil collection drawer 25 is then pulled out for cleaning and recycling.

[0033] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A carbon fiber pre-oxidation oven comprising an oven body (1) and carbon fiber filaments (15) installed inside the oven body (1), characterized in that, The left side inner wall of the box (1) is fixedly connected with a first partition plate (2), the right side inner wall of the box (1) is fixedly connected with a second partition plate (3) below the first partition plate (2), the box (1) is divided into a first heating cavity (4), a second heating cavity (5) and a third heating cavity (6) from top to bottom by the first partition plate (2) and the second partition plate (3), the bottom of the box (1) is provided with an air inlet fan (9), the air outlet end of the air inlet fan (9) is provided with an electric heating wire (10), the top of the box (1) is installed with an oil removal tank (11), the box (1) and the oil removal tank (11) are connected with a connecting pipe (12), the inner side of the oil removal tank (11) is provided with a filter (13), the top of the box (1) is installed with an air extractor (14) on one side of the oil removal tank (11).

2. The carbon fiber pre-oxidation oven of claim 1, wherein, One end of the first partition plate (2) is provided with a first rotating roller (16), one end of the second partition plate (3) is provided with a second rotating roller (17).

3. The carbon fiber pre-oxidation oven of claim 1, wherein, The first partition plate (2) and the second partition plate (3) are provided with a third rotating roller (18) and a fourth rotating roller (19) below the third rotating roller (18).

4. The carbon fiber pre-oxidation oven of claim 1, wherein, The upper and lower surfaces of the first partition plate (2) and the second partition plate (3) are connected with arrayed blocking rods (20).

5. The carbon fiber pre-oxidation oven of claim 1, wherein, The top of the first partition plate (2) is provided with a feeding port (7), and the bottom of the second partition plate (3) is provided with a discharging port (8).

6. A carbon fiber pre-oxidation oven according to claim 1, wherein The front of the box (1) is installed with a box door (21), and the box door (21) is installed with a handle (22).

7. A carbon fiber pre-oxidation oven according to claim 6, wherein The box door (21) is provided with high-temperature-resistant glass (23).

8. The carbon fiber pre-oxidation oven of claim 1, wherein, The filter (13) is an activated carbon filter, and the oil removal tank (11) is provided with a mounting groove (24) matched with the filter (13).

9. A carbon fiber pre-oxidation oven according to claim 8, wherein, The bottom of the oil removal tank (11) is movably installed with an oil collecting drawer (25), and the front of the oil collecting drawer (25) is connected with a pull handle (26).

10. A carbon fiber pre-oxidation oven according to claim 9, wherein, The oil removal tank (11) is provided with a drawer groove (27) matched with the oil collecting drawer (25).

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