Online fiber drying device
By using odd-numbered center heating outer circular air-outlet guide roller and thermal insulation cotton structure in the fiber online drying device, combining heat conduction and air-drying methods, the problems of high internal humidity and heat energy dissipation of fibers are solved, and efficient and low-cost fiber drying is achieved.
Patent Information
- Application Number
- CN202422033742.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The fibers have poor drying effect in the post-treatment process, high internal humidity and severe external heat energy loss, resulting in high production costs.
An odd number of centrally heated outer circular air-exhaust guide rollers are used to disperse and unfold the fiber tows, and dry them through three methods: heat conduction, air drying and hot air baking. Combined with the insulation cotton structure, the thermal energy loss is reduced, and the electric heating rod is powered in parallel to adapt to humidity changes.
The uniform heating of the fiber wire is achieved, the drying effect and efficiency are improved, energy consumption is reduced, and production costs are reduced.
Smart Images
Figure CN223258532U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fiber production, and particularly relates to an online fiber drying device. Background Art
[0002] Fibers are made from natural or synthetic polymer compounds, through processes such as preparing spinning solution, spinning from a spinneret, and post-processing. Drying is a post-processing step that refers to a process of removing solvents and retaining solid content in some way. It usually refers to the process of drying the oiled fibers by passing hot air. Since the fibers are bundled into fiber bundles during the post-processing step, the drying effect is not good. Usually, the outside of the fiber bundle is dried, while the internal fiber filaments still have a high humidity. In addition, during the drying process, the hot air entering the oven loses heat energy in the external pipes. The hot air inlet set in the oven is far away from the fiber bundles, which consumes a lot of energy and increases production costs. Utility Model Content
[0003] The utility model aims to provide a fiber online drying device with uniform heating, good drying effect and low energy consumption.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a fiber online drying device includes an oven, wherein a wire inlet and a wire outlet are respectively provided on the upper left side and the upper right side of the oven, and N central heating outer circular air outlet guide rollers are provided inside the oven, where N is an odd number, and each central heating outer circular air outlet guide roller is horizontally arranged along the front-to-back direction, wherein (N-1) / 2 central heating outer circular air outlet guide rollers are arranged in a row along the left-right direction at the lower part of the oven, and [(N-1) / 2]+1 central heating outer circular air outlet guide rollers are arranged in a row along the left-right direction at the upper part of the oven, and any central heating outer circular air outlet guide roller in the lower row is directly below any two adjacent central heating outer circular air outlet guide rollers in the upper row, and the fiber bundle enters the oven from the wire inlet on the left, and is guided out from the wire outlet on the right after bypassing all the central heating outer circular air outlet guide rollers from left to right.
[0005] The centrally heated outer circle air outlet guide roller includes a fixed center tube, a roller and several electric heating rods that are all coaxially arranged. The two ends of the fixed center tube are respectively fixed on the front and rear side plates of the oven. The several electric heating rods are installed in the fixed center tube through a center positioning frame. The inner circles of the two ends of the roller are rotatably connected to the outer circles at both ends of the fixed center tube through a bearing. The front and rear ends of the roller are connected to a pressure cover on the fixed center tube by screws. A number of long air holes are opened on the fixed center tube between the two bearings, and a number of small air holes are opened on the roller between the two bearings. A plug is provided inside one end of the fixed center tube, and the other end of the fixed center tube is connected to the positive pressure air inlet pipe. The power wires of each electric heating rod pass through the plug and are connected to the power supply line outside the oven. The power wires of all electric heating rods in the same fixed center tube are connected to the power supply line in parallel.
[0006] All center-heated outer circle air outlet guide rollers have limit rings fixed on both ends of the roller outer circle; the rollers of the 2-3 center-heated outer circle air outlet guide rollers on the far left are dispersion spreading rollers, and the outer diameter of the dispersion spreading roller is thick in the middle and gradually becomes smaller towards the front and back sides.
[0007] The oven has a three-layer structure, the middle layer is filled with heat-insulating cotton, and the bottom of the oven is equipped with supporting legs.
[0008] The bottom of the oven is a V-shaped surface with higher left and right sides and lower middle. An exhaust pipe is connected to the lowest point of the bottom of the oven, and an exhaust valve is provided on the exhaust pipe.
[0009] Two center positioning frames are provided on each electric heating rod at intervals of front and back, and each center positioning frame includes an inner ring and an outer ring arranged in concentric circles. Three connecting rods arranged radially are provided between the outer circle of the inner ring and the inner circle of the outer ring. The electric heating rod is passed through the inner ring, and the inner ring is connected with a top screw along the radial thread. The inner end of the top screw is crimped with the outer circle of the electric heating rod, and the outer circle of the outer ring is gap-fitted with the inner circle of the fixed center tube.
[0010] By adopting the above technical scheme, the working principle and process of the utility model are as follows: the fiber bundle enters the oven from the left side wire inlet, and passes through the outer circle of the roller of all the central heating outer circle air outlet guide rollers from left to right in turn, and is then led out from the right side wire outlet. When the fiber bundle passes through the 2-3 central heating outer circle air outlet guide rollers on the far left, since the outer diameter of these 2-3 dispersion spreading rollers is thick in the middle and gradually becomes smaller towards the front and back sides, the fiber bundle can be initially dispersed and spread forward and backward when passing around the outer circle of the dispersion spreading roller, so that each fiber can be dried evenly; the fiber after dispersion and expansion continues to pass around other central heating outer circle air outlet guide rollers, and the hot air in the central heating outer circle air outlet guide roller performs heat conduction heating and ventilation drying on the fiber bundle passing around the outer circle of the roller, and the dried fiber is finally led out through the wire outlet on the right side of the oven.
[0011] The positive pressure air inlet pipe introduces filtered and purified air into the central tube of the central heating outer circle air outlet guide roller. The electric heating rod heats the air, and the hot air enters the oven through the long ventilation holes and small ventilation holes. At the same time, the roller is heated by the hot air, and the hot roller performs heat conduction drying on the fiber filaments that pass around its outer circle. When the positive pressure hot air passes through the small ventilation holes, the fiber filaments wrapped around the small ventilation holes are positively pressure dried. The hot air entering the oven heats the fiber filaments inside the oven. The positive pressure air in the oven is discharged through the exhaust pipe at the bottom of the oven, and less hot air is discharged through the wire inlet and outlet.
[0012] The outer diameter of the spreading roller is thick in the middle and tapers toward the front and back. This allows fiber bundles that pass around the outer diameter of the spreading roller to move from the center to the left and right, thereby achieving the effect of spreading the bundled fiber. The provision of a limit ring prevents fibers that are too dispersed from escaping the spreading roller.
[0013] An odd number of centrally heated outer-circle air-outlet guide rollers are arranged in two rows, one above the other, and the other in intervals in the left and right directions. This not only facilitates the winding of the fiber bundles on the rollers, but also fully increases the roller wrap angle (the contact area between the fiber bundles and the outer circle of the roller) when the fiber bundles pass around the rollers, thereby enhancing the drying effect.
[0014] The oven has a three-layer structure with insulation in the middle to improve the thermal insulation effect, reduce heat loss and lower production costs. Of course, the hot air discharged from the exhaust pipe can also be further recycled and reused.
[0015] The bottom of the oven is a V-shaped surface with higher left and right sides and lower middle, so that the oil on the fiber bundle can drip and gather into the exhaust pipe to be discharged outside.
[0016] The setting of the center positioning frame makes it easy to install the electric heating rod and positions the electric heating rod to the center line of the fixed center tube, so that the airflow of hot air entering the oven is more uniform in all directions.
[0017] The power wires of all the electric heating rods in the same fixed central tube are connected to the power supply circuit in parallel, so that all the electric heating rods can be powered on at the same time, or one or several electric heating rods can be turned on to work, depending on the humidity of the county party committee tow.
[0018] To sum up, the utility model has a scientific principle, reasonable design and compact structure. The fiber bundles are first dispersed and spread out, and air is introduced through the center of the guide roller and the air is heated at the same time, thereby reducing the heat energy loss in the process of hot air passing through the outside. The dispersed fiber filaments are dried through three drying methods of heat conduction, air drying and hot air baking, thereby greatly improving the drying effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1It is a structural diagram of the utility model;
[0020] Figure 2 This is a schematic diagram of the axial structure of the centrally heated outer cylindrical air outlet guide roller.
[0021] Figure 3 This is a schematic diagram of the axial structure of a centrally heated, outer-circle, air-exiting guide roller, in which the roller is a dispersed unwinding roller;
[0022] Figure 4 yes Figure 2 and Figure 3 Schematic diagram of the planar structure of the center positioning frame. DETAILED DESCRIPTION
[0023] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.
[0024] like Figure 1-Figure 4 As shown, the fiber online drying device of the present invention includes an oven 1, and a wire inlet 2 and a wire outlet 3 are respectively provided at the upper left and right sides of the oven 1. N central heating outer circular air outlet guide rollers 4 are provided inside the oven 1, where N is an odd number. Each central heating outer circular air outlet guide roller 4 is horizontally arranged in the front-to-back direction, wherein (N-1) / 2 central heating outer circular air outlet guide rollers 4 are arranged in a row along the left-right direction at the lower part of the oven 1, and [(N-1) / 2]+1 central heating outer circular air outlet guide rollers 4 are arranged in a row along the left-right direction at the upper part of the oven 1. Any central heating outer circular air outlet guide roller 4 in the lower row is directly below any two adjacent central heating outer circular air outlet guide rollers 4 in the upper row. The fiber bundle 5 enters the oven 1 from the wire inlet 2 on the left, and is guided out from the wire outlet 3 on the right after bypassing all the central heating outer circular air outlet guide rollers 4 from left to right.
[0025] The central heating outer circle air outlet guide roller 4 includes a fixed central tube 6, a roller 7 and several electric heating rods 8, which are all coaxially arranged. The two ends of the fixed central tube 6 are respectively fixed on the front and rear side plates of the oven 1, and the several electric heating rods 8 are installed in the fixed central tube 6 through the central positioning frame 9. The inner circles of the two ends of the roller 7 are rotatably connected to the outer circles of the two ends of the fixed central tube 6 through a bearing 10. The front and rear ends of the roller 7 are connected to the pressure cover 11 on the fixed central tube 6 by screws. A plurality of long air holes 12 are opened on the fixed central tube 6 between the two bearings 10, and a plurality of small air holes 13 are opened on the roller 7 between the two bearings 10. A plug 14 is provided inside one end of the fixed central tube 6, and the other end of the fixed central tube 6 is connected to the positive pressure air inlet pipe. The power wire 15 of each electric heating rod 8 passes through the plug 14 and is connected to the power supply line outside the oven 1. The power wires 15 of all electric heating rods in the same fixed central tube 6 are connected to the power supply line in parallel.
[0026] The outer circles of both ends of the rollers 7 of all the center-heated outer circle air-outlet type guide rollers 4 are fixed with limiting rings 16; the rollers 7 of the 2-3 center-heated outer circle air-outlet type guide rollers 4 on the far left are dispersion and expansion rollers 17, and the outer diameter of the dispersion and expansion rollers 17 is thick in the middle and gradually becomes smaller towards the front and rear sides.
[0027] The oven 1 has a three-layer structure, the middle layer is filled with heat-insulating cotton 18, and the bottom of the oven 1 is provided with supporting legs.
[0028] The bottom surface of the oven 1 is a V-shaped surface with higher left and right sides and lower middle. An exhaust pipe 19 is connected to the bottom of the oven 1 at the lowest point. The exhaust pipe 19 is provided with an exhaust valve 20 (for adjusting the exhaust volume).
[0029] Two center positioning frames 9 are provided on each electric heating rod 8 at intervals in front and back. Each center positioning frame 9 includes an inner ring 21 and an outer ring 22 arranged in concentric circles. Three radially arranged connecting rods 23 are provided between the outer circle of the inner ring 21 and the inner circle of the outer ring 22. The electric heating rod 8 is passed through the inner ring 21. The inner ring 21 is radially threaded with a top screw 24. The inner end of the top screw 24 is crimped to the outer circle of the electric heating rod 8, and the outer circle of the outer ring 22 is gap-fitted with the inner circle of the fixed center tube 6.
[0030] The working principle and process of the present invention are as follows: the fiber bundle 5 enters the drying oven 1 from the wire inlet 2 on the left, and passes through the outer circle of the roller 7 of all the central heating outer circle air outlet guide rollers 4 from left to right in turn, and is then led out from the wire outlet 3 on the right. When the fiber bundle 5 passes through the 2-3 central heating outer circle air outlet guide rollers 4 on the far left, since the outer diameter of these 2-3 dispersion and expansion rollers 17 is thick in the middle and gradually becomes smaller on the front and back sides, the fiber bundle 5 can be initially dispersed and expanded forward and backward when passing through the outer circle of the dispersion and expansion roller 17, so that each fiber can be dried evenly; the fiber after dispersion and expansion continues to pass through other central heating outer circle air outlet guide rollers 4, and the hot air in the central heating outer circle air outlet guide roller 4 performs heat conduction heating and ventilation drying on the fiber that passes through the outer circle of the roller 7, and the dried fiber is finally led out through the wire outlet 3 on the right side of the drying oven 1.
[0031] The positive pressure air inlet pipe introduces filtered and purified air into the central tube of the central heating outer circle air outlet guide roller 4, and the electric heating rod heats the air. The hot air enters the oven 1 through the long air holes 12 and the small air holes 13. At the same time, the roller 7 is heated by the hot air, and the hot roller 7 performs heat conduction drying on the fiber filaments passing around its outer circle. When the positive pressure hot air passes through the small air holes 13, the fiber filaments wrapped around the small air holes 13 are positively dried. The hot air entering the oven 1 heats the fiber filaments inside the oven 1. The positive pressure air in the oven 1 is discharged through the exhaust pipe 19 at the bottom of the oven 1, and less hot air is discharged through the inlet 2 and the outlet 3.
[0032] The outer diameter of the spreading roller 17 is thick in the middle and gradually tapers toward the front and rear sides. This allows the fiber bundle 5 that passes around the outer diameter of the spreading roller 17 to move from the center to the left and right sides, thereby achieving the effect of spreading the bundled fiber. The provision of the limiting ring 16 prevents the fiber bundles that are too dispersed from escaping the spreading roller 17.
[0033] An odd number of centrally heated outer-circle air-outlet guide rollers 4 are provided, and are arranged in two rows, one above the other, and at intervals in the left-right direction. This not only facilitates the winding of the fiber bundles 5 on the rollers 7, but also fully increases the roller wrap angle (the contact area between the fiber bundles 5 and the outer circle of the roller 7) when the fiber yarns pass around the rollers 7, thereby enhancing the drying effect.
[0034] The three-layer structure of the oven 1 is provided with heat-insulating cotton 18 in the middle, which improves the heat-insulating effect, reduces the heat loss and reduces the production cost. Of course, the hot air discharged from the exhaust pipe can also be further recovered and reused.
[0035] The bottom surface of the oven 1 is a V-shaped surface with higher left and right sides and lower middle, so that the oil on the fiber tow 5 can drip and gather into the exhaust pipe to be discharged outside.
[0036] The arrangement of the center positioning frame 9 facilitates the installation of the electric heating rod 8 and positions the electric heating rod 8 to the center line of the fixed center tube 6, so that the airflow of the hot air entering the oven 1 is more uniform in all directions.
[0037] The power conductors 15 of all the electric heating rods in the same fixed central tube 6 are connected to the power supply circuit in parallel, so that all the electric heating rods 8 can be powered on at the same time, or one or more electric heating rods 8 can be turned on to work, depending on the humidity of the county party committee tow.
[0038] Flanges are installed at both ends of the central fixed pipe, which are connected to the front and rear side plates of the oven 1 through the flanges, so that it is convenient to disassemble and assemble the central heating outer circle air outlet guide roller 4.
[0039] The above embodiments illustrate the basic principles and features of the present invention. However, the above merely illustrates preferred embodiments of the present invention and is not intended to limit the present invention to the embodiments described. Persons skilled in the art, inspired by this patent, may make various modifications and improvements without departing from the spirit of the present invention and the scope of protection of the claims, all of which fall within the scope of protection of the present invention. Therefore, the patent and scope of protection of this utility model shall be subject to the appended claims.
Claims
1. A fiber online drying device, including a drying oven, characterized in that: A wire inlet and a wire outlet are respectively provided at the upper left side and the upper right side of the oven. N center-heated external cylindrical air-outlet guide rollers are provided inside the oven, where N is an odd number. Each center-heated external cylindrical air-outlet guide roller is horizontally arranged along the front-to-back direction, wherein (N-1) / 2 center-heated external cylindrical air-outlet guide rollers are arranged in a row along the left-right direction at the lower part of the oven, and [(N-1) / 2]+1 center-heated external cylindrical air-outlet guide rollers are arranged in a row along the left-right direction at the upper part of the oven. Any center-heated external cylindrical air-outlet guide roller in the lower row is directly below any two adjacent center-heated external cylindrical air-outlet guide rollers in the upper row. The fiber bundle enters the oven from the wire inlet on the left, bypasses all the center-heated external cylindrical air-outlet guide rollers from left to right, and is then led out from the wire outlet on the right.
2. The fiber online drying device according to claim 1, characterized in that: The centrally heated outer circle air outlet guide roller includes a fixed center tube, a roller and several electric heating rods that are all coaxially arranged. The two ends of the fixed center tube are respectively fixed on the front and rear side plates of the oven. The several electric heating rods are installed in the fixed center tube through a center positioning frame. The inner circles of the two ends of the roller are rotatably connected to the outer circles at both ends of the fixed center tube through a bearing. The front and rear ends of the roller are connected to a pressure cover on the fixed center tube by screws. A number of long air holes are opened on the fixed center tube between the two bearings, and a number of small air holes are opened on the roller between the two bearings. A plug is provided inside one end of the fixed center tube, and the other end of the fixed center tube is connected to the positive pressure air inlet pipe. The power wires of each electric heating rod pass through the plug and are connected to the power supply line outside the oven. The power wires of all electric heating rods in the same fixed center tube are connected to the power supply line in parallel.
3. The fiber online drying device according to claim 2, characterized in that: All center-heated outer circle air outlet guide rollers have limit rings fixed on both ends of the roller outer circle; the rollers of the 2-3 center-heated outer circle air outlet guide rollers on the far left are dispersion spreading rollers, and the outer diameter of the dispersion spreading roller is thick in the middle and gradually becomes smaller towards the front and back sides.
4. The fiber online drying device according to any one of claims 1 to 3, characterized in that: The oven has a three-layer structure, the middle layer is filled with heat-insulating cotton, and the bottom of the oven is equipped with supporting legs.
5. The fiber online drying device according to claim 4, characterized in that: The bottom of the oven is a V-shaped surface with higher left and right sides and lower middle. An exhaust pipe is connected to the lowest point of the bottom of the oven, and an exhaust valve is provided on the exhaust pipe.
6. The fiber online drying device according to claim 2 or 3, characterized in that: Two center positioning frames are provided on each electric heating rod at intervals of front and back, and each center positioning frame includes an inner ring and an outer ring arranged in concentric circles. Three connecting rods arranged radially are provided between the outer circle of the inner ring and the inner circle of the outer ring. The electric heating rod is passed through the inner ring, and the inner ring is connected with a top screw along the radial thread. The inner end of the top screw is crimped with the outer circle of the electric heating rod, and the outer circle of the outer ring is gap-fitted with the inner circle of the fixed center tube.