Layered drying system for lyocell fibers
By setting up a layered drying system on two floors, utilizing vertical conveyor channels and insulation layers, the problems of large footprint and inconvenient installation of lyocell fiber drying systems have been solved, achieving efficient fiber drying and energy management.
Patent Information
- Application Number
- CN202423017506.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing lyocell fiber drying systems suffer from problems such as large footprint and inconvenient installation due to long drying distances.
A layered drying system is adopted, which divides the drying area into a first drying zone and a second drying zone on two floors. The two zones are connected by a vertical conveyor channel and a horizontal conveyor device. The vertical space is utilized to reduce the horizontal footprint, and the drying efficiency is improved by combining the insulation layer and cotton conveying hopper.
It effectively reduces the horizontal footprint of dryers and refiners, facilitates installation, and improves fiber drying efficiency and energy management.
Smart Images
Figure CN223550853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lyocell fiber drying technology, and specifically provides a layered drying system for lyocell fibers. Background Technology
[0002] In the production process of lyocell fiber, the lyocell fibers cleaned by the refining machine need to be transported to a dryer for drying. The dryer heats fresh air with steam, and the fresh air comes into contact with the wet fibers, raising their temperature and causing the moisture in the fibers to evaporate. The heated air then carries away the moisture, thus achieving the drying effect. Only after the moisture regain of the fibers reaches the required level can they be packaged.
[0003] The lyocell fibers cleaned in the refining mill have a high moisture content, requiring a long drying time in the dryer. Due to process requirements, the cleaned lyocell fibers must be directly fed into the dryer for drying. To ensure the continuous output of lyocell fibers from the refining mill is dried as quickly as possible, the refining mill and dryer need to be installed in the same location, with the output of the refining mill connected to the input of the dryer. Since the refining mill continuously outputs cleaned lyocell fibers, the drying zone of the dryer is very long to extend the drying time of the lyocell fibers within the drying zone, allowing the lyocell fibers output from the refining mill to be continuously dried within the dryer.
[0004] However, because the drying distance of the dryer is long, the dryer and refining machine occupy a large area in the horizontal direction, which makes the installation of the dryer easily restricted by the land area, resulting in inconvenience in the installation of the dryer and refining machine. Utility Model Content
[0005] This invention provides a layered drying system for lyocell fibers, which solves the problem of inconvenient installation of the dryer and refining machine due to the long drying distance and large horizontal footprint of the dryer.
[0006] The technical solution of this utility model is as follows:
[0007] A layered drying system for lyocell fibers includes a first drying zone, a second drying zone, a vertical conveying channel, and a horizontal conveying device. The first and second drying zones are respectively located on two floors. The vertical conveying channel is located between the first and second drying zones, with its bottom end positioned above the horizontal conveying device. The vertical conveying channel is used to convey lyocell fibers output from the first drying zone to the horizontal conveying device, and the horizontal conveying device is used to convey the lyocell fibers to the second drying zone.
[0008] In this design, a first drying area and a second drying area are set up on two separate floors, connected by a vertical conveyor channel and a horizontal conveyor device. This division of the drying area into two parts reduces the size of the first drying area, allowing it to directly perform preliminary drying on the lyocell fibers output from the refiner. The preliminarily dried lyocell fibers can then be quickly conveyed to the second drying area, which ensures the final drying effect. The first and second drying areas are located on different floors, eliminating the need for the entire drying area to be on the same floor. This efficient use of vertical space reduces the horizontal footprint of the refiner and dryer, making their installation easier.
[0009] Preferably, the vertical conveying channel is a vertically arranged pipe, and a front feeder is provided between the vertical conveying channel and the first drying zone. The output end of the first drying zone corresponds to the feed end of the front feeder, and the front feeder is used to convey lyocell fibers into the vertical conveying channel.
[0010] In this solution, lyocell fibers are transported through vertically installed pipes. The fibers fall along the pipes under gravity, and the pipes restrain the fibers, preventing them from scattering. The pipes are inexpensive and easy to install, effectively reducing installation costs.
[0011] Because the factory has high ceilings and long pipes, the Lyocell fibers take a long time to pass through the pipes, resulting in significant heat loss. This means that the second drying zone needs to consume more heat to reheat the Lyocell fibers. Therefore, the vertical conveyor channel is equipped with an insulation layer.
[0012] In this solution, the insulation layer can reduce the temperature conduction efficiency inside and outside the pipe, thereby reducing the temperature loss of the Lyocell fiber inside the pipe. This allows the Lyocell fiber to maintain a higher temperature when it is transported to the horizontal conveying device, which then transports the Lyocell fiber to the second drying zone. This reduces heat loss during the transport process. The higher the temperature of the Lyocell fiber entering the second drying zone, the lower the energy consumption of the second drying zone.
[0013] Preferably, the insulation layer is a cylindrical structure made of insulation cotton, and the insulation layer is sleeved on the outer wall of the vertical conveying channel.
[0014] In this solution, the cost of insulation cotton is low and easy to control.
[0015] The larger the vertical conveying channel, the more difficult the installation. Therefore, the width of the horizontal conveying device is greater than the width of the vertical conveying channel.
[0016] In this solution, reducing the width of the vertical conveying channel facilitates its installation.
[0017] When the width of the vertical conveying channel is less than the width of the horizontal conveying device, the Lyocell fibers output from the vertical conveying channel will concentrate in one place of the horizontal conveying device, resulting in Lyocell fiber accumulation and low drying efficiency. To address this, a cotton conveying hopper is provided at the bottom of the vertical conveying channel. The cotton conveying hopper is equipped with a swing tube that swings back and forth along the vertical plane. The swing surface of the swing tube is perpendicular to the conveying direction of the horizontal conveying device.
[0018] In this design, the swing tube on the cotton conveying hopper can swing back and forth to spray Lyocell fibers to the left and right edges of the horizontal conveying device, avoiding the accumulation of Lyocell fibers and thus improving the drying efficiency of Lyocell fibers.
[0019] Preferably, the cotton conveying swing bucket further includes a support, a drive mechanism, and a transmission mechanism. The swing tube is rotatably connected to the support, and the drive mechanism is connected to the swing tube via the transmission mechanism. The drive mechanism is used to drive the swing tube to swing.
[0020] In this design, a support bracket is used to support the swing tube, and a drive mechanism is used to drive the swing tube to swing, so that the swing speed of the swing tube remains stable, thereby making the lyocell fibers more evenly distributed on the horizontal conveying device.
[0021] Preferably, the swing range at the bottom of the swing tube is the same as the width of the horizontal conveying device.
[0022] In this scheme, the swing range at the bottom of the swing tube is related to the falling position of the Lyocell fiber. The swing range is the same as the width of the horizontal conveying device, so that the falling range of the Lyocell fiber coincides with the width of the horizontal conveying device. This can prevent the Lyocell fiber from falling outside the horizontal conveying device and can also make the Lyocell fiber as evenly distributed as possible in the horizontal conveying device.
[0023] Preferably, a post-feeder is provided between the horizontal conveying device and the second drying zone, and the output end of the horizontal conveying device corresponds to the post-feeder. The post-feeder is used to convey lyocell fibers to the second drying zone.
[0024] Preferably, the horizontal conveying device is a belt conveyor.
[0025] The beneficial effects of this utility model are:
[0026] This invention sets up a first drying area and a second drying area on two floors respectively, so that the drying areas are distributed in the vertical space, thereby reducing the horizontal footprint of the refining machine and the dryer and facilitating the installation of the refining machine and the dryer. Attached Figure Description
[0027] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the system structure of this utility model;
[0029] Figure 2 This is a cross-sectional view of the first drying zone of this utility model from the left perspective;
[0030] Figure 3 This is a cross-sectional view of the vertical conveying channel of this utility model;
[0031] Figure 4 This is a left view of the cotton conveying hopper and horizontal conveying device of this utility model;
[0032] Figure 5 This is a front view of the swing tube and eccentric wheel of this utility model;
[0033] Figure 6 This is a front view of the swing tube and eccentric wheel of this utility model swinging to an inclined state.
[0034] In the above figures, the corresponding reference numerals are as follows:
[0035] 1. First drying zone; 2. Front feeder; 3. Vertical conveyor channel; 4. Cotton conveying hopper; 5. Horizontal conveyor; 6. Rear feeder; 7. Second drying zone; 11. Conveyor belt; 12. Air inlet pipe; 13. Exhaust pipe; 14. Outer shell; 31. Pipe; 32. Insulation layer; 41. Swing pipe; 42. Support; 43. Drive mechanism; 44. Pulley; 45. Shaft; 46. Sleeve; 47. Strip hole; 48. Eccentric wheel; 49. Eccentric shaft. Detailed Implementation
[0036] The technical solution of this utility model will be clearly and completely described in conjunction with the accompanying drawings and through specific embodiments.
[0037] Example 1:
[0038] like Figure 1As shown in the figure, this embodiment provides a layered drying system for lyocell fibers, including a first drying zone 1, a second drying zone 7, a vertical conveyor channel 3, and a horizontal conveyor device 5. The first drying zone 1 and the second drying zone 7 are located on different floors, with the first drying zone 1 situated on a floor above the second drying zone 7. The vertical conveyor channel 3 connects the two floors and is located at the output end of the first drying zone 1. Lyocell fibers enter from the top of the vertical conveyor channel 3 and exit from its bottom. The bottom of the vertical conveyor channel 3 is located above the horizontal conveyor device 5. The lyocell fibers exiting the vertical conveyor channel 3 fall onto the horizontal conveyor device 5 under gravity, and are then conveyed by the horizontal conveyor device 5 to the second drying zone 7 for drying. Therefore, the vertical conveyor channel 3 and the horizontal conveyor device 5 are located between the first drying zone 1 and the second drying zone 7, used to convey lyocell fibers from the first drying zone 1 to the second drying zone 7.
[0039] The drying method for lyocell fibers involves heating fresh air with steam and then delivering the heated fresh air to the lyocell fibers, thereby removing moisture and drying them. Therefore, the dryer includes both the section for heating the fresh air with steam and the section where the heated fresh air contacts the lyocell fibers. Consequently, the section where the fresh air contacts the lyocell fibers can be divided into multiple drying zones, forming the first drying zone 1 and the second drying zone 7.
[0040] like Figure 2 As shown, it should be noted that the first drying zone 1 and the second drying zone 7 refer to the parts for drying lyocell, including a conveyor belt 11 for conveying lyocell fibers, an air inlet pipe 12 for conveying hot air, an exhaust pipe 13 for discharging humid and hot air, and a housing 14. The conveyor belt 11 is used to convey lyocell fibers, and hot air comes into contact with the lyocell fibers on the conveyor belt 11 to achieve the effect of drying the lyocell fibers. The housing 14 covers the bottom, top, and left and right sides of the conveyor belt 11. The air inlet pipe 12 and the exhaust pipe 13 are respectively connected to the inside of the housing to separate the conveyor belt 11 from the outside environment and to prevent outside air from mixing with the hot air and affecting the drying effect.
[0041] The intake pipe 31 can be connected to both sides of the housing 14 to deliver heated air into the housing, while the exhaust pipe 13 is located at the top of the housing 14. After the hot air comes into contact with the Lyocell fiber, it will carry the evaporated water vapor and be discharged from the exhaust pipe 13 at the top.
[0042] The vertical conveying channel 3 is a pipe 31 that is set vertically or at an angle. After entering the pipe 31, the lyocell fibers fall under the action of gravity. Therefore, the pipe 31 is preferably set vertically to avoid the lyocell fibers remaining inside the pipe 31.
[0043] Pipe 31 can be made of stainless steel or high-temperature resistant plastic. Using stainless steel or plastic pipes can prevent pipe 31 from rusting.
[0044] like Figure 3 As shown, an insulation layer 32 is provided on the outer wall of the pipe 31. The insulation layer 32 can be a cylindrical structure made of insulating cotton. The insulation layer 32 is fitted onto the outer wall of the pipe 31 to reduce heat exchange between the inside and outside of the pipe 31 and slow down the temperature drop of the lyocell fibers inside the pipe 31. When the temperature of the lyocell fibers drops between the first drying zone 1 and the second drying zone 7, the lyocell fibers need more heat to be reheated to dryness when entering the second drying zone 7, which will result in higher energy consumption in the second drying zone 7. Therefore, the insulation layer 32 can reduce the energy consumption of the second drying zone 7.
[0045] The vertical conveying channel 3 can be a circular pipe 31 or a square pipe 31. The larger the diameter of the vertical conveying channel 3, the higher the strength requirement of the vertical conveying channel 3 itself, which also increases the installation difficulty and leads to higher costs. Therefore, the diameter of the vertical conveying pipe 31 can be reduced to lower the installation difficulty and cost.
[0046] like Figure 4 As shown, the diameter of the vertical conveying channel 3 is smaller than the width of the horizontal conveying device 5. A cotton conveying hopper 4 is provided at the bottom of the vertical conveying channel 3. The oscillation of the cotton conveying hopper 4 allows the Lyocell fibers to fall dispersedly onto the horizontal conveying device 5. The use of the cotton conveying hopper 4 avoids the accumulation of Lyocell fibers.
[0047] The cotton conveying hopper 4 includes a support 42, a swing tube 41, a drive mechanism 43, and a transmission mechanism. The swing tube 41 is rotatably connected to the support 42. The drive mechanism 43 and the transmission mechanism are located on the support 42. The drive mechanism 43 is connected to the swing tube 41 via the transmission mechanism, allowing the swing tube 41 to swing in a vertical plane. The swing surface of the swing tube 41 is perpendicular to the conveying direction of the horizontal conveying device 5, thereby distributing the Lyocell fibers more evenly on the horizontal conveying device 5.
[0048] The top diameter of the swing tube 41 is larger than the bottom diameter of the vertical conveying channel 3, and the top of the swing tube 41 is fitted onto the bottom of the vertical conveying mechanism. Lyocell fibers output from the vertical conveying mechanism fall into the swing tube 41, and the Lyocell fibers are discharged from the bottom of the swing tube 41 and fall onto the horizontal conveying mechanism.
[0049] The swing angle of the swing tube 41 can be limited by the transmission mechanism, so that when the swing tube 41 swings to the extreme positions on the left and right sides, the lyocell fibers discharged from the swing tube 41 fall on the left and right edges of the horizontal conveying device 5, respectively, and do not fall outside the horizontal conveying device 5.
[0050] like Figure 5 and Figure 6 As shown, the transmission mechanism can be an eccentric wheel 48 mechanism, which includes an eccentric wheel 48, an eccentric shaft 49, and a strip-shaped hole 47 disposed on the swing tube 41. The eccentric wheel 48 is connected to the output shaft of the drive mechanism 43. The eccentric shaft 49 is disposed on the eccentric wheel 48 but is not located at the center of the eccentric wheel 48. The strip-shaped hole 47 is disposed along the axial direction of the swing tube 41, and one end of the eccentric shaft 49 is inserted into the strip-shaped hole 47. When the eccentric wheel 48 rotates, the eccentric shaft 49 abuts against the side wall of the strip-shaped hole 47 and pushes the swing tube 41 to swing. The greater the distance between the eccentric shaft 49 and the center of the eccentric wheel 48, the greater the swing angle of the swing tube 41. Therefore, the swing angle of the swing tube 41 can be controlled by setting the position of the eccentric shaft 49.
[0051] Alternatively, the transmission mechanism may also include two pulleys 44 and a belt, with the two pulleys 44 connected to the output shaft of the drive mechanism 43 and the eccentric wheel 48 respectively, and the belt connected to the two pulleys 44.
[0052] The swing tube 41 is rotatably connected to the bracket 42. The bracket 42 is provided with a rotating shaft 45, and the swing tube 41 is provided with a sleeve 46 that is adapted to the rotating shaft 45. The rotating shaft 45 is inserted into the sleeve 46, so that the swing tube 41 can rotate around the axis of the sleeve 46. The sleeve 46 can be fixed to the outer wall of the swing tube 41 by welding.
[0053] Optionally, a bearing is provided between the sleeve 46 and the rotating shaft 45. The rotating shaft 45 is connected to the inner ring of the bearing, and the sleeve 46 is connected to the outer ring of the bearing. Providing a bearing can reduce the swing resistance of the swing tube 41.
[0054] The drive mechanism 43 can be an electric motor, a pneumatic motor, or a hydraulic motor. An electric motor is preferred, as hydraulic motors are prone to oil buildup that can contaminate the lyocell fibers.
[0055] The bracket 42 can be a rectangular frame structure formed by welding profiles.
[0056] The vertical conveyor channel 3 can be fixed to the bracket 42 with fasteners, and the vertical conveyor channel 3 can also be fixed to the floor with fasteners.
[0057] The horizontal conveying device 5 uses a belt conveyor.
[0058] A front feeder 2 can be installed between the first drying zone 1 and the vertical conveyor channel 3, and a rear feeder 6 can be installed between the horizontal conveyor device 5 and the second drying zone 7. The front feeder 2 facilitates the stable transport of lyocell fibers from the first dryer to the vertical conveyor channel 3, and the rear feeder 6 stabilizes the transport of lyocell fibers from the horizontal conveyor device 5 to the second drying zone 7.
[0059] A refining machine is installed upstream of the first drying zone 1. The refining machine outputs the cleaned lyocell fibers, which can also be conveyed into the first drying zone 1 by a feeder. In other words, a feeder is installed between the refining machine and the first drying zone 1 to output the lyocell fibers from the refining machine into the first drying zone 1.
Claims
1. A layered drying system for lyocell fibers, characterized in that, It includes a first drying zone (1), a second drying zone (7), a vertical conveying channel (3), and a horizontal conveying device (5). The first drying zone (1) and the second drying zone (7) are respectively located on two floors. The vertical conveying channel (3) is located between the first drying zone (1) and the second drying zone (7). The bottom end of the vertical conveying channel (3) is located above the horizontal conveying device (5). The vertical conveying channel (3) is used to convey the lyocell fibers output from the first drying zone (1) to the horizontal conveying device (5). The horizontal conveying device (5) is used to convey the lyocell fibers to the second drying zone (7).
2. The layered drying system for lyocell fibers according to claim 1, characterized in that, The vertical conveying channel (3) is a vertically arranged pipe (31). A front feeder (2) is provided between the vertical conveying channel (3) and the first drying zone (1). The output end of the first drying zone (1) corresponds to the feed end of the front feeder (2). The front feeder (2) is used to convey Lyocell fibers into the vertical conveying channel (3).
3. A layered drying system for lyocell fibers according to claim 2, characterized in that, The vertical conveying channel (3) is provided with an insulation layer (32).
4. A layered drying system for lyocell fibers according to claim 3, characterized in that, The insulation layer (32) is a cylindrical structure made of insulation cotton, and the insulation layer (32) is fitted on the outer wall of the vertical conveying channel (3).
5. A layered drying system for lyocell fibers according to claim 1, characterized in that, The width of the horizontal conveying device (5) is greater than the width of the vertical conveying channel (3).
6. A layered drying system for lyocell fibers according to claim 5, characterized in that, The bottom end of the vertical conveying channel is provided with a cotton conveying swing bucket (4), and the cotton conveying swing bucket (4) is provided with a swing tube (41) that swings back and forth along the vertical plane. The swing surface of the swing tube (41) is perpendicular to the conveying direction of the horizontal conveying device (5).
7. A layered drying system for lyocell fibers according to claim 6, characterized in that, The cotton conveying swing bucket (4) also includes a support (42), a drive mechanism (43) and a transmission mechanism. The swing tube (41) is rotatably connected to the support (42). The drive mechanism (43) is connected to the swing tube (41) through the transmission mechanism. The drive mechanism (43) is used to drive the swing tube (41) to swing.
8. A layered drying system for lyocell fibers according to claim 6, characterized in that, The swing range at the bottom of the swing tube (41) is the same as the width of the horizontal conveying device (5).
9. A layered drying system for lyocell fibers according to claim 1, characterized in that, A rear feeder (6) is provided between the horizontal conveying device (5) and the second drying zone (7). The output end of the horizontal conveying device (5) corresponds to the rear feeder. The rear feeder (6) is used to convey Lyocell fibers to the second drying zone (7).
10. A layered drying system for lyocell fibers according to claim 1, characterized in that, The horizontal conveying device (5) is a belt conveyor.