Multi-runner heating roller device for graphene precursor spinning machinery

Abstract

The invention discloses a multi-runner heating roller device for a graphene precursor spinning machine, and belongs to the technical field of graphene precursor equipment. Comprising a heating roller and a roller shaft, roller end covers are arranged at the two ends of the heating roller for sealing, the roller shaft penetrates through the roller end cover on one side to be inserted into the heating roller, and the end, inserted into the heating roller, of the roller shaft is limited through a partition plate and a supporting frame; heat-conducting oil is used as a heat-conducting medium, double-spiral heat-conducting runners are adopted, heat-conducting oil in a first runner enters the right end of the heating roller from the left end of the heating roller to flow back, and a first runner inlet, a second runner inlet, a first runner backflow opening and a second runner backflow opening are evenly distributed in the circumferential direction of the heating roller; the heat conduction oil in the second flow channel enters the left end from the right end of the heating roller to flow back, the flow directions of the heat conduction oil in the two flow channels are opposite, the heat conduction oil spirally flows in the two flow channels which are not communicated and formed by the heating roller outer roller, the heating roller inner roller and the flow guide plate, and the temperature uniformity of the surface of the heating roller can be greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of graphene precursor equipment, specifically relating to a multi-channel heating roller device for graphene precursor spinning machinery. Background Technology

[0002] In the graphene spinning drying process, the raw fibers pass through heated rollers to dry the oiled fibers, reducing the variation in individual fiber weight and closing the porous structure within the fibers. This increases fiber strength and elongation at break, improving fiber quality. Uneven heating roller temperatures result in uneven heating of the fibers at different locations, leading to variations in fiber strength and thickness, causing problems such as fiber breakage and fuzzing, thus affecting fiber quality. Therefore, ensuring temperature uniformity on the surface of the heated rollers during the drying process is crucial in the spinning process.

[0003] There are two existing structures for heating rollers. One is a single-layer, single-pass type, where both ends of the roller use straight-through rotary joints. After the heat transfer oil enters the heating roller from one rotary joint, it flows along a channel parallel to the axis of the heating roller or along a spiral channel to the other end of the heating roller, and finally flows out from the other rotary joint. Because the heat transfer oil gradually dissipates heat as it flows from one end of the heating roller to the other, the temperature difference between the two ends of the heating roller is large, heat is lost quickly, and the thermal efficiency is low. The other is a double-circuit structure, where a double rotary joint is used on the operating side. The heat transfer oil flows along a serpentine channel inside the roller, forming a single-circuit recirculation process. To a certain extent, this reduces the temperature difference between the two ends of the heating roller surface, but the temperature difference between different positions on the heating roller surface is still large. Summary of the Invention

[0004] The present invention mainly addresses the technical problems existing in the prior art and provides a multi-channel heating roller device for graphene precursor spinning machinery.

[0005] The above-mentioned technical problems of the present invention are mainly solved by the following technical solution: a multi-channel heating roller device for graphene precursor spinning machinery, comprising a heating roller and a roller shaft, characterized in that: both ends of the heating roller are provided with roller end caps for sealing, the roller shaft passes through one side of the roller end cap and is inserted into the interior of the heating roller, and the end inserted into the interior of the heating roller is limited by a partition and a support frame, a pipe joint is inserted into the end of the roller shaft inserted into the heating roller, a pipe is inserted into the center of the roller shaft, the pipe is inserted into the pipe joint and installed inside the roller shaft, an inlet flow channel is provided inside the pipe, a return flow channel is formed between the outer ring of the pipe and the roller shaft, a cross-shaped distribution flow channel is sleeved on the end of the pipe inserted into the pipe joint, and one end of the distribution flow channel communicates with the inlet flow channel;

[0006] The heating roller is formed by an outer roller and an inner roller nested together. The inner roller is located inside the outer roller. The outer surface of the inner roller is spirally provided with a guide plate, and the two ends of the guide plate form a bent seal with the inner roller. The guide plate is located between the inner roller and the outer roller, and forms two non-communicating first and second flow channels through the guide plate. The two ends of the first flow channel are respectively provided with a first flow channel inlet and a first flow channel return port. The two ends of the second flow channel are respectively provided with a second flow channel inlet and a second flow channel return port.

[0007] A first flow channel inlet connecting pipe and a first flow channel return pipe are provided between the first flow channel and the roller shaft, and a second flow channel inlet connecting pipe and a second flow channel return pipe are provided between the second flow channel and the roller shaft.

[0008] Preferably, the roller shaft and the pipe joint are provided with a through hole structure at their center, and the return flow channel is connected to the pipe joint through the through hole structure.

[0009] Preferably, the surface of the pipe joint has a first inlet in one of the channels corresponding to the distribution channel. The first inlet is connected to the inlet channel. A first inlet pipe is inserted into the first inlet. The other end of the first inlet pipe is connected to the first channel inlet connecting pipe. A first channel inlet pipe is connected to the other end of the first channel inlet connecting pipe. The other end of the first channel inlet pipe is connected to the first channel inlet.

[0010] Preferably, a first return port is provided in the middle section of the surface of the pipe joint. The first return port is connected to the return channel. A first return port pipe is inserted into the first return port. A first channel return port connecting pipe is connected to the other end of the first return port pipe. The other end of the first channel return port connecting pipe is connected to the partition. One end of the first channel return pipe passes through the partition and is connected to the first channel return port connecting pipe. The other end of the first channel return pipe is connected to the first channel return port.

[0011] Preferably, the pipe joint surface has a second inlet on another channel corresponding to the distribution channel. The second inlet is connected to the inlet channel. A second inlet pipe is inserted into the second inlet. The other end of the second inlet pipe is connected to the second channel inlet connecting pipe. The other end of the second channel inlet connecting pipe is connected to a partition plate, and a second channel inlet pipe is connected through the partition plate. The other end of the second channel inlet pipe is connected to the second channel inlet.

[0012] Preferably, a second return port is provided in the middle section of the surface of the pipe joint. The second return port is connected to the return channel. A second return port pipe is inserted into the second return port. A second channel return port connecting pipe is connected to the other end of the second return port pipe. The other end of the second channel return port connecting pipe is connected to the second channel return pipe. The other end of the second channel return pipe is connected to the second channel return port.

[0013] The beneficial effects of this invention are as follows: by using heat transfer oil as the heat transfer medium and employing a double-helix heat transfer channel, the heat transfer oil in the first channel enters from the left end of the heating roller and flows back to the right end. The inlet of the first channel, the inlet of the second channel, and the return ports of the first and second channels are all evenly distributed in the circumferential direction of the heating roller. The heat transfer oil in the second channel enters from the right end of the heating roller and flows back to the left end. The heat transfer oil flows in opposite directions in the two channels and forms a spiral shape in the two non-connected channels formed by the outer roller, the inner roller, and the guide plate of the heating roller. This can greatly improve the temperature uniformity of the heating roller surface and improve the quality and stability of the products produced by the heating roller. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention AA;

[0016] Figure 3 This is a cross-sectional structural diagram of the present invention BB;

[0017] Figure 4 This is a cross-sectional structural diagram of CC according to the present invention;

[0018] Figure 5 This is a plan view of the heat-conducting oil flow channel inside the heating roller of the present invention;

[0019] Figure 6 This is a three-dimensional structural diagram of the inner roller inside the heating roller of the present invention.

[0020] In the diagram: 1. Heating roller; 11. Outer roller; 12. Inner roller; 121. First flow channel inlet; 122. First flow channel return port; 123. Second flow channel inlet; 124. Second flow channel return port; 13. Guide plate; 14. First flow channel inlet pipe; 15. First flow channel return pipe; 16. Second flow channel inlet pipe; 17. Second flow channel return pipe; 18. Flange; 19. Custom flange; 110. First flow channel; 111. Second flow channel; 2. Roller shaft; 21. Return flow channel; 3. 1. Pipeline; 31. Inlet channel; 32. Distribution channel; 4. Pipe joint; 41. First inlet; 42. First inlet pipe; 43. First reflux port; 44. First reflux port pipe; 45. Second inlet; 46. Second inlet pipe; 47. Second reflux port; 48. Second reflux port pipe; 5. First channel inlet connecting pipe; 6. First channel reflux port connecting pipe; 7. Second channel inlet connecting pipe; 8. Second channel reflux port connecting pipe; 9. Flange gasket; 10. Roller end cap. Detailed Implementation

[0021] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0022] Example: A multi-channel heating roller device for graphene precursor spinning machinery, such as... Figures 1-6 As shown, the device includes a heating roller 1 and a roller shaft 2. Both ends of the heating roller 1 are sealed with roller end caps 10. The roller shaft 2 passes through one side of the roller end cap 10 and is inserted into the interior of the heating roller 1. The end inserted into the interior of the heating roller 1 is limited by a partition and a support frame. A pipe joint 4 is inserted into the end of the roller shaft 2 inserted into the heating roller 1. A through hole structure is provided at the center of the roller shaft 2 and the pipe joint 4. The return flow channel 21 is connected to the pipe joint 4 through the through hole structure. A pipe 3 is inserted into the center of the roller shaft 2. The pipe 3 is inserted into the pipe joint 4 and installed inside the roller shaft 2. An inlet flow channel 31 is provided inside the pipe 3. The end of the pipe 3 that enters the roller shaft 2 is connected to an external heat transfer oil inlet device. The annular space between the outer ring of the pipe 3 and the roller shaft 2 forms the return flow channel 21. A cross-shaped distribution flow channel 32 is sleeved on the end of the pipe 3 inserted into the pipe joint 4. One end of the distribution flow channel 32 is connected to the inlet flow channel 31 inside the pipe 3.

[0023] The heating roller 1 is formed by an outer roller 11 and an inner roller 12 nested together. The inner roller 12 is located inside the outer roller 11, and there is an annular space between them. This space is sealed by roller end caps 10 on both sides. A guide plate 13 is spirally arranged on the outer surface of the inner roller 12, and both ends of the guide plate 13 form a bent seal with the inner roller 12. The guide plate 13 is located between the inner roller 12 and the outer roller 11. The top of the guide plate 13 is tightly connected to the inner wall of the outer roller 11, and two non-communicating first flow channels 110 and second flow channels 111 are formed through the guide plate 13, allowing the first flow channels 110 and second flow channels 111 to... To prevent liquid overflow, the first flow channel 110 has a first flow channel inlet 121 and a first flow channel return port 122 at both ends, and the second flow channel 111 has a second flow channel inlet 123 and a second flow channel return port 124 at both ends. The first flow channel 110 and the second flow channel 111 cause the heat transfer oil added inside to flow in opposite directions, avoiding heat loss of the heat transfer oil along the path in the single-pass structure and the single-return structure, and improving the uniformity of the surface temperature of the heating roller 1. The first flow channel inlet 121, the first flow channel return port 122, the second flow channel inlet 123 and the second flow channel return port 124 are all opened on the surface of the inner roller 12.

[0024] A first flow channel inlet connecting pipe 5 and a first flow channel return pipe 15 are provided between the first flow channel 110 and the roller 2. A first inlet 41 is opened on the surface of the pipe joint 4 corresponding to one of the channels of the distribution channel 32. The first inlet 41 is interconnected with the inlet flow channel 31. A first inlet pipe 42 is inserted into the first inlet 41 and fixed by welding. The other end of the first inlet pipe 42 is connected to the first flow channel inlet connecting pipe 5. A first flow channel inlet pipe 14 is connected to the other end of the first flow channel inlet connecting pipe 5. The other end of the first flow channel inlet pipe 14 is connected to the first flow channel inlet. 121 are interconnected. A first return port 43 is provided in the middle section of the surface of the pipe joint 4. The first return port 43 is interconnected with the return channel 21. A first return port pipe 44 is inserted into the first return port 43. A first channel return port 122 connecting pipe is connected to the other end of the first return port pipe 44. The other end of the first channel return port 122 connecting pipe is connected to the partition. One end of the first channel return pipe 15 passes through the partition and is interconnected with the first channel return port 122 connecting pipe. The other end of the first channel return pipe 15 is interconnected with the first channel return port 122.

[0025] A second flow channel inlet connecting pipe 7 and a second flow channel return pipe 17 are provided between the second flow channel 111 and the roller 2. A second inlet 45 is opened on the surface of the pipe joint 4 corresponding to another channel of the distribution flow channel 32. The second inlet 45 is interconnected with the inlet flow channel 31. A second inlet pipe 46 is inserted into the second inlet 45. The other end of the second inlet pipe 46 is connected to the second flow channel inlet connecting pipe 7. The other end of the second flow channel inlet connecting pipe 7 is connected to a partition plate, and a second flow channel inlet 123 is connected through the partition plate. The other end of the inlet pipe 123 is connected to the inlet pipe 123 of the second flow channel. A second return port 47 is provided in the middle section of the surface of the pipe joint 4. The second return port 47 is connected to the return flow channel 21. A second return port pipe 48 is inserted into the second return port 47. A second flow channel return port connecting pipe 8 is connected to the other end of the second return port pipe 48. The other end of the second flow channel return port connecting pipe 8 is connected to the second flow channel return pipe 17. The other end of the second flow channel return pipe 17 is connected to the second flow channel return port 124.

[0026] All the two pipes 3 mentioned above are connected to each other by flange 18 and flange gasket 9. Custom flange 1918 is installed at the connection between the first flow channel 110 return pipe 15 and the second flow channel 111 inlet pipe 123 and the partition. The first flow channel 110 return pipe 15 is connected to the flange 18 at one end of the first flow channel 110 return port 122 connecting pipe by custom flange 1918, and flange gasket 9 is installed at the connection. The second flow channel 111 inlet pipe 123 is connected to the flange 18 at one end of the second flow channel 111 inlet pipe 123 connecting pipe by positioning flange 18, and flange gasket 9 is installed at the connection.

[0027] The principle of this invention: When the heating roller 1 is working, the heat transfer oil enters through the inlet channel 31 of the pipe 3, flows through the cross-shaped distribution channel 32 set at the end of the pipe 3 and is divided into two streams. One stream is sent through the first inlet 41 set on the pipe joint 4 in conjunction with the first inlet pipe 42, the first channel inlet connecting pipe 5 and the first channel inlet pipe 14 to the first channel inlet 121 set on the inner roller 12. The first channel inlet 121 is connected to the first channel 110, so that the heat transfer oil flows spirally along the first channel 110 and then flows out through the first channel return port 122. At this time, the heat transfer oil is sent to the first return port 43 through the first channel return pipe 15, the first channel return port connecting pipe 6 and the first return port pipe 44, so that the heat transfer oil flows back to the return channel 21 inside the roller shaft.

[0028] Another stream is sent through the second inlet 45 set on the pipe joint 4 to the second inlet 123 set on the inner roller 12 via the matching second inlet pipe 46, the second flow channel inlet connecting pipe 7 and the second flow channel inlet pipe 16. The second flow channel inlet 123 is connected to the second flow channel 111. After the heat transfer oil flows spirally along the second flow channel 111, it flows out from the second flow channel return port 124. At this time, the heat transfer oil is sent into the second return port 47 through the second flow channel return pipe 17, the second flow channel return port connecting pipe 8 and the second return port pipe 48. The second return port 47 is connected to the return flow channel 21. At this time, the heat transfer oil is sent into the return flow channel 21 again.

[0029] Two streams of heat transfer oil flow in opposite directions within the spiral flow channel of the heating roller 1. The first flow channel has a first flow channel inlet and a first flow channel return port at its two ends, and the second flow channel has a second flow channel inlet and a second flow channel return port at its two ends. The inner roller 12 is cylindrical, allowing the heat transfer oil to flow in a spiral pattern between the corresponding inlet and return port, thus ensuring the uniformity of the heating roller surface temperature. Finally, the two streams of heat transfer oil flow out through the first flow channel return port 123 and the second flow channel return port 124, then merge into one stream and flow out through the return flow channel 21, completing the circulation within the heating roller.

[0030] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and many variations are possible. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention should be considered within the protection scope of the present invention.

Claims

1. A multi-channel heating roller device for graphene precursor spinning machinery, comprising a heating roller (1) and a roller shaft (2), characterized in that: Both ends of the heating roller (1) are sealed with roller end caps (10). The roller shaft (2) passes through the roller end cap (10) on one side and is inserted into the interior of the heating roller (1). The end inserted into the interior of the heating roller (1) is limited by a partition and a support frame. The end of the roller shaft (2) inserted into the heating roller (1) is connected to a pipe joint (4). A pipe (3) is inserted into the center of the roller shaft (2). The pipe (3) is inserted into the pipe joint (4) and installed inside the roller shaft (2). An inlet flow channel (31) is provided inside the pipe (3). A return flow channel (21) is formed between the outer ring of the pipe (3) and the roller shaft (2). A cross-shaped distribution flow channel (32) is sleeved on the end of the pipe (3) inserted into the pipe joint (4). One end of the distribution flow channel (32) is connected to the inlet flow channel (31). The heating roller (1) is formed by connecting an outer roller (11) and an inner roller (12). The inner roller (12) is located inside the outer roller (11). The outer surface of the inner roller (12) is spirally provided with a guide plate (13), and the two ends of the guide plate (13) form a bent seal with the inner roller (12). The guide plate (13) is located between the inner roller (12) and the outer roller (11), and forms two non-connected first flow channels (110) and second flow channels (111) through the guide plate (13). The two ends of the first flow channel (110) are respectively provided with a first flow channel inlet (121) and a first flow channel return port (122). The two ends of the second flow channel (111) are respectively provided with a second flow channel inlet (123) and a second flow channel return port (124). A first flow channel inlet connecting pipe (5) and a first flow channel return pipe (15) are provided between the first flow channel (110) and the roller (2), and a second flow channel inlet connecting pipe (7) and a second flow channel return pipe (17) are provided between the second flow channel (111) and the roller (2).

2. The multi-channel heating roller device for graphene precursor spinning machinery according to claim 1, characterized in that: The roller (2) and the pipe joint (4) are provided with a through hole structure at their center, and the return flow channel (21) is connected to the pipe joint (4) through the through hole structure.

3. The multi-channel heating roller device for graphene precursor spinning machinery according to claim 1, characterized in that: The surface of the pipe joint (4) is provided with a first inlet (41) corresponding to one of the channels of the distribution channel (32). The first inlet (41) is connected to the inlet channel (31). A first inlet pipe (42) is inserted into the first inlet (41). The other end of the first inlet pipe (42) is connected to the first channel inlet connecting pipe (5). A first channel inlet pipe (14) is connected to the other end of the first channel inlet connecting pipe (5). The other end of the first channel inlet pipe (14) is connected to the first channel inlet (121).

4. The multi-channel heating roller device for graphene precursor spinning machinery according to claim 3, characterized in that: A first return port (43) is provided in the middle section of the surface of the pipe joint (4). The first return port (43) is connected to the return channel (21). A first return port pipe (44) is inserted into the first return port (43). A first channel return port connecting pipe (6) is connected to the other end of the first return port pipe (44). The other end of the first channel return port connecting pipe (6) is connected to the partition. One end of the first channel return pipe (15) passes through the partition and is connected to the first channel return port connecting pipe (6). The other end of the first channel return pipe (15) is connected to the first channel return port (122).

5. The multi-channel heating roller device for graphene precursor spinning machinery according to claim 1, characterized in that: The surface of the pipe joint (4) is provided with a second inlet (45) corresponding to another channel of the distribution channel (32). The second inlet (45) is connected to the inlet channel (31). A second inlet pipe (46) is inserted into the second inlet (45). The other end of the second inlet pipe (46) is connected to the second channel inlet connecting pipe (7). The other end of the second channel inlet connecting pipe (7) is connected to the partition and a second channel inlet pipe (16) is provided through the partition. The other end of the second channel inlet pipe (16) is connected to the second channel inlet (123).

6. The multi-channel heating roller device for graphene precursor spinning machinery according to claim 5, characterized in that: A second return port (47) is provided in the middle section of the surface of the pipe joint (4). The second return port (47) is connected to the return channel (21). A second return port pipe (48) is inserted into the second return port (47). A second channel return port connecting pipe (8) is connected to the other end of the second return port pipe (48). The other end of the second channel return port connecting pipe (8) is connected to the second channel return pipe (17). The other end of the second channel return pipe (17) is connected to the second channel return port (124).

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