Hot oil drying system for drying carbon fibers
Through multiple gradient heating hot oil rollers and independent temperature control systems, the water stain residue and burn problems of carbon fiber drying equipment are solved, and the efficient and low-noise carbon fiber drying effect is achieved.
Patent Information
- Application Number
- CN202422304628.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-21
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-21
AI Technical Summary
Existing carbon fiber drying equipment has problems such as unsatisfactory drying effect and sharply rising temperatures, especially hot oil drying equipment that easily causes water stains to remain when the heat rises instantly.
Multiple gradient heating hot oil rollers are used to maintain a different temperature through an independent temperature control system. The carbon fiber is gradually heated, combined with a negative pressure fan to discharge water vapor, prolong the evaporation process and reduce water stain residues.
The gradual heating and drying of carbon fiber is achieved, reducing water stain residues, improving drying effect, avoiding burns caused by excessive temperatures, low noise and small footprint.
Smart Images
Figure CN223216617U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hot oil drying system for drying carbon fibers, belonging to the technical field of hot oil drying of carbon fibers. Background Art
[0002] Water-washed carbon filament is an important step in the carbon fiber production process. After water washing, the carbon filament contains a lot of water. Before entering the subsequent production link, it must be dried and dehydrated to avoid affecting the subsequent processes.
[0003] At present, most of the equipment used for carbon fiber drying on the market are single-layer air-blast drying and hot oil drying. Single-layer air-blast drying occupies a large area, and the noise and water vapor escape generated by the air blast are relatively serious. Hot oil drying uses the high temperature on the surface of the hot oil roller to dry the carbon fiber. Compared with air-blast drying itself, it is relatively quiet. In actual use, there are some functional deficiencies and there is room for improvement. For example, the hot oil drying equipment on the market generally uses a single roller or a double roller. When the carbon fiber passes through the hot oil roller, it is affected by the high temperature on the hot oil roller, and its own temperature rises rapidly, evaporating the moisture on the surface. The entire heating and drying process is short. The instantaneous heating causes water stains to remain on the surface after evaporation, and the drying effect is not ideal. On the other hand, the temperature rises sharply to the highest temperature and remains at the highest temperature, which burns the carbon fiber.
[0004] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content
[0005] In response to the deficiencies in the background technology, the utility model provides a hot oil drying system for carbon fiber drying, which can utilize multiple hot oil rollers with gradient heating to gradually heat the carbon fibers in sequence, thereby reducing residual water stains and achieving good drying effects.
[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:
[0007] A hot oil drying system for drying carbon fiber includes a roller frame, three groups of top hot oil rollers are rotatably mounted above the roller frame, two groups of bottom hot oil rollers are arranged below the top hot oil rollers, and hot oil coils are arranged inside the bottom hot oil rollers and the top hot oil rollers;
[0008] The outer wall of the hot oil coil is in close contact with the inner wall of the bottom hot oil roller and the top hot oil roller. The top hot oil roller and the bottom hot oil roller are arranged alternately, so that the carbon fiber passes around the top hot oil roller and the bottom hot oil roller in sequence from front to back.
[0009] Each top hot oil roller and each bottom hot oil roller are equipped with a corresponding independent temperature control heating system, so that each top hot oil roller and each bottom hot oil roller are constantly maintained at different temperatures.
[0010] Furthermore, a left bearing seat is provided on the left side of the bottom hot oil roller and the top hot oil roller, a right bearing seat is provided on the right side of the bottom hot oil roller and the top hot oil roller, a fixed frame is provided on the left side of the roller frame, and five sets of drive motors are installed on the right side of the fixed frame, which drive the top hot oil roller and the bottom hot oil roller respectively.
[0011] Furthermore, the heating system is configured on the left side of the fixed frame, and each heating system includes a heating oil tank and an electric heating pipe controller arranged in the outer protective frame. The heating oil tank is installed at the bottom end of the outer protective frame, and the electric heating pipe controller is arranged at the top of the heating oil tank. An electric heating coil is arranged inside the heating oil tank.
[0012] Furthermore, a heat-resistant oil pump is installed on the right side of the heating oil tank, and the right sides of the bottom hot oil roller and the top hot oil roller are movably connected with oil pipe joints respectively. An oil inlet pipe is provided between the right side of the heat-resistant oil pump and the top of the oil pipe joint, and an oil return pipe is provided between the right side of the heating oil tank and the top of the oil pipe joint.
[0013] The heating oil tank, heat-resistant oil pump, oil inlet pipe, hot oil coil and oil return pipe form a circulating oil circuit.
[0014] Furthermore, the top of the fixing frame is fixedly connected to the top support frame, the right side of the bottom of the top support frame is fixedly connected to the wind collecting hood, two sets of negative pressure fans are installed at the top inside the wind collecting hood, and the top of the wind collecting hood is fixedly connected to an external air duct.
[0015] Furthermore, an infrared temperature sensor is fixedly connected to the right side of the roller frame, and each top hot oil roller and each bottom hot oil roller are correspondingly configured with an infrared temperature sensor.
[0016] Furthermore, a controller with an LCD screen is installed at the front end of the right side of the right bearing seat, and the LCD screen controller is connected to the infrared temperature sensor through a signal line.
[0017] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:
[0018] The carbon fiber harness is passed through five groups of hot oil rollers. Each group of hot oil rollers corresponds to a heating oil tank. The electric heating tube controller on the top of each heating oil tank controls the temperature of the electric heating coil inside to heat the thermal oil. The five groups of heating oil tanks correspond to five groups of hot oil rollers respectively. The temperature of the five groups of heating oil tanks rises in a step-by-step manner. The water-carrying carbon fiber passes through each hot oil roller from back to front in turn, and the temperature it contacts also gradually rises. By increasing the heating time and gradually raising the temperature, the evaporation process can be prolonged and the water stains on the surface of the carbon fiber can be reduced.
[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of a partial cross-sectional structure of the utility model;
[0021] Figure 2 This is a side view of the structure of the external and internal guards of the present invention;
[0022] Figure 3 This is a side structural diagram of the roller frame in the utility model;
[0023] Figure 4 It is a schematic diagram of the structure of the wind hood in the utility model when viewed from above.
[0024] In the figure: 1- roller frame, 2- bottom hot oil roller, 3- top hot oil roller, 4- hot oil coil, 5- left bearing seat, 6- right bearing seat, 7- drive motor, 8- fixed frame, 9- heat-resistant oil pump, 10- oil inlet pipe, 11- oil return pipe, 12- oil pipe joint, 13- heating oil tank, 14- electric heating coil, 15- electric heating pipe controller, 16- outer protective frame, 17- top support frame, 18- wind collecting hood, 19- negative pressure fan, 20- external air duct, 21- infrared temperature sensor, 22- controller with LCD screen. DETAILED DESCRIPTION
[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.
[0026] like Figure 1-3 As shown, the utility model provides a hot oil drying system for carbon fiber drying, comprising a roller frame 1, three groups of top hot oil rollers 3 are rotatably installed above the roller frame 1, two groups of bottom hot oil rollers 2 are arranged below the top hot oil rollers 3, and hot oil coils 4 are provided inside the bottom hot oil rollers 2 and the top hot oil rollers 3. The outer walls of the hot oil coils 4 are tightly fitted with the inner walls of the bottom hot oil rollers 2 and the top hot oil rollers 3. The top hot oil rollers 3 and the bottom hot oil rollers 2 are staggered so that the carbon fibers pass around the top hot oil rollers 3 and the bottom hot oil rollers 2 in sequence from front to back;
[0027] Each top hot oil roller 3 and each bottom hot oil roller 2 are correspondingly equipped with an independent temperature-controlled heating system, so that each top hot oil roller 3 and each bottom hot oil roller 2 are constantly maintained at different temperatures.
[0028] A left bearing seat 5 is provided on the left side of the bottom hot oil roller 2 and the top hot oil roller 3, and a right bearing seat 6 is provided on the right side of the bottom hot oil roller 2 and the top hot oil roller 3. A fixed frame 8 is provided on the left side of the roller frame 1, and five sets of drive motors 7 are installed on the right side of the fixed frame 8 to drive the top hot oil roller 3 and the bottom hot oil roller 2 respectively.
[0029] The heating system is arranged on the left side of the fixed frame 8. Each heating system includes a heating oil tank 13 and an electric heating pipe controller 15 arranged in the outer protective frame 16. The heating oil tank 13 is installed at the bottom end inside the outer protective frame 16. The electric heating pipe controller 15 is arranged at the top of the heating oil tank 13. An electric heating coil 14 is arranged inside the heating oil tank 13. A heat-resistant oil pump 9 is installed on the right side of the heating oil tank 13. The right sides of the bottom hot oil roller 2 and the top hot oil roller 3 are respectively movably connected with oil pipe joints 12. An oil inlet pipe 10 is provided between the right side of the heat-resistant oil pump 9 and the top of the oil pipe joint 12. An oil return pipe 11 is provided between the right side of the heating oil tank 13 and the top of the oil pipe joint 12.
[0030] The heating oil tank 13, the heat-resistant oil pump 9, the oil inlet pipe 10, the hot oil coil 4, and the oil return pipe 11 form a circulating oil circuit. The top end of the electric heating coil 14 is connected to the bottom end of the electric heating pipe controller 15. The electric heating coil 14 and the electric heating pipe controller 15 are electrically connected. Through independent temperature control and step-by-step heating, the drying process can be prolonged and water stains can be reduced.
[0031] The electric heating tube controller 15 on the top of the heating oil tank 13 controls the temperature of the electric heating coil 14 inside it to heat the thermal oil. The five groups of heating oil tanks 13 correspond to five groups of hot oil rollers respectively. The five groups of heating oil tanks 13 climb in a step-by-step manner. The carbon fiber with water passes through the hot oil rollers from back to front, and the temperature gradually rises according to the order of contact. By increasing the heating time and gradual temperature increase, the evaporation process can be prolonged and the water stains on the surface of the carbon fiber can be reduced.
[0032] The top of the fixing frame 8 is fixedly connected to the top support frame 17, and the right side of the bottom of the top support frame 17 is fixedly connected to the wind collecting cover 18. Figure 4 , two sets of negative pressure fans 19 are installed at the top of the wind collecting hood 18, and the top of the wind collecting hood 18 is fixedly connected to an external air duct 20, and the wind collecting hood 18 can discharge the water vapor generated during the drying process;
[0033] The negative pressure fan 19 in the wind collecting hood 18 starts and generates a strong negative pressure, sucking up the water vapor below, collecting it through the wind collecting hood 18 and discharging it from the external air duct 20. An extension pipe can be installed at the end of the external air duct 20 to guide it to the outside of the factory. The top support frame 17 provides physical support for the installation and fixation of the wind collecting hood 18.
[0034] The right side of the roller frame 1 is fixedly connected with an infrared temperature sensor 21. Figure 3 Each top hot oil roller 3 and each bottom hot oil roller 2 is correspondingly configured with an infrared temperature sensor 21. The front end of the right side of the right bearing seat 6 is also equipped with a LCD controller 22. The LCD controller 22 is connected to the infrared temperature sensor 21 through a signal line, which can monitor the temperature of the hot oil roller in real time.
[0035] The infrared temperature sensor 21 can monitor the surface temperature of the bottom hot oil roller 2 and the top hot oil roller 3, and provide feedback to the controller 22 with an LCD screen, so that the user can check and adjust the temperature to avoid poor drying effect caused by insufficient temperature.
[0036] Working principle: When the present invention is in use, first, two groups of bottom hot oil rollers 2 and three groups of top hot oil rollers 3, totaling five groups of hot oil rollers, are respectively introduced with heat transfer oil, and then the carbon fiber bundle is passed through the five groups of hot oil rollers. Each group of hot oil rollers corresponds to a heating oil tank 13, and the electric heating tube controller 15 on the top of each heating oil tank 13 controls the electric heating coil 14 inside it to heat up, so as to heat the heat transfer oil. The five groups of heating oil tanks 13 correspond to the five groups of hot oil rollers respectively, and the temperature of the five groups of heating oil tanks 13 rises in a step-by-step manner. The heat-resistant oil pump 9 pumps the heat transfer oil into the oil pipe joint 12 through the oil inlet pipe 10, and after running for one circle in the hot oil coil 4, it returns to the heating oil tank 13 from the return oil pipe 11. The carbon fiber with water passes through each hot oil roller from back to front, and the temperature it contacts also gradually rises. By increasing the heating time and gradual heating, the evaporation process can be prolonged and the water stains on the surface of the carbon fiber can be reduced. During the heating and dehumidification process of the carbon fiber, the water stains on its surface evaporate into water vapor and escape outward. The negative pressure fan 19 in the wind collecting hood 18 starts and generates a strong negative pressure, which sucks up the water vapor below, collects it through the wind collecting hood 18 and discharges it from the external air duct 20. The five groups of rollers, the bottom hot oil roller 2 and the three groups of top hot oil rollers 3, serve as the main heating components for drying carbon fibers. Their temperatures are stepped up. Since the oil inlet pipe 10 is long, the hot oil itself will have temperature attenuation. The infrared temperature sensor 21 can maintain monitoring of the surface temperature of the bottom hot oil roller 2 and the three groups of top hot oil rollers 3, and feedback is provided to the controller with LCD screen 22, so that the user can check and adjust the temperature to avoid poor drying effect caused by insufficient temperature.
[0037] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.
Claims
1. A hot oil drying system for drying carbon fibers, characterized by: The invention comprises a roller frame (1), three groups of top hot oil rollers (3) are rotatably mounted above the roller frame (1), two groups of bottom hot oil rollers (2) are arranged below the top hot oil rollers (3), and hot oil coils (4) are arranged inside the bottom hot oil rollers (2) and the top hot oil rollers (3); The outer wall of the hot oil coil (4) is tightly fitted to the inner walls of the bottom hot oil roller (2) and the top hot oil roller (3), and the top hot oil roller (3) and the bottom hot oil roller (2) are arranged alternately so that the carbon fiber passes through the top hot oil roller (3) and the bottom hot oil roller (2) in sequence from front to back; Each top hot oil roller (3) and each bottom hot oil roller (2) are respectively equipped with an independent temperature-controlled heating system, so that each top hot oil roller (3) and each bottom hot oil roller (2) are constantly maintained at different temperatures.
2. The hot oil drying system for drying carbon fibers according to claim 1, characterized in that: A left bearing seat (5) is provided on the left side of the bottom hot oil roller (2) and the top hot oil roller (3); a right bearing seat (6) is provided on the right side of the bottom hot oil roller (2) and the top hot oil roller (3); a fixed frame (8) is provided on the left side of the roller frame (1); and five groups of driving motors (7) are installed on the right side of the fixed frame (8) to drive the top hot oil roller (3) and the bottom hot oil roller (2) respectively.
3. The hot oil drying system for drying carbon fibers according to claim 1, characterized in that: The heating system is arranged on the left side of the fixed frame (8), and each heating system includes a heating oil tank (13) and an electric heating pipe controller (15) arranged in the outer protective frame (16). The heating oil tank (13) is installed at the bottom end inside the outer protective frame (16), and the electric heating pipe controller (15) is arranged at the top end of the heating oil tank (13). The heating oil tank (13) is provided with an electric heating coil (14) inside.
4. The hot oil drying system for drying carbon fibers according to claim 3, characterized in that: A heat-resistant oil pump (9) is installed on the right side of the heating oil tank (13); the right sides of the bottom hot oil roller (2) and the top hot oil roller (3) are movably connected to oil pipe joints (12); an oil inlet pipe (10) is provided between the right side of the heat-resistant oil pump (9) and the top end of the oil pipe joint (12); and an oil return pipe (11) is provided between the right side of the heating oil tank (13) and the top end of the oil pipe joint (12); The heating oil tank (13), the heat-resistant oil pump (9), the oil inlet pipe (10), the hot oil coil (4), and the oil return pipe (11) form a circulating oil circuit.
5. The hot oil drying system for drying carbon fibers according to claim 3, characterized in that: The top of the fixing frame (8) is fixedly connected to a top support frame (17), the right side of the bottom of the top support frame (17) is fixedly connected to an air collecting cover (18), the top of the inside of the air collecting cover (18) is equipped with two sets of negative pressure fans (19), and the top of the air collecting cover (18) is fixedly connected to an external air duct (20).
6. The hot oil drying system for drying carbon fibers according to claim 1, characterized in that: An infrared temperature sensor (21) is fixedly connected to the right side of the roller frame (1), and each top hot oil roller (3) and each bottom hot oil roller (2) are correspondingly configured with an infrared temperature sensor (21).
7. The hot oil drying system for drying carbon fibers according to claim 6, characterized in that: The front end of the right side of the right bearing seat (6) is also equipped with a liquid crystal screen controller (22), which is connected to the infrared temperature sensor (21) via a signal line.