Viscose-based fiber continuous pre-oxidation equipment

Abstract

The utility model discloses viscose-based fiber continuous pre-oxidation equipment, and relates to the technical field of viscose-based fiber continuous pre-oxidation. The viscose-based fiber continuous pre-oxidation equipment comprises a tunnel furnace body, a conveying device is arranged in the tunnel furnace body, the conveying device penetrates through the tunnel furnace body, a mounting frame is arranged in the tunnel furnace body, and a plurality of heating pipes are fixed at the bottom of the mounting frame; the collecting box is located at the bottom of one end of the conveying device, and a sweeping mechanism capable of sweeping the conveying device is arranged in the collecting box; the motor drives the lead screw to rotate, the lead screw drives the moving plate to move, the moving plate drives the rotating rod to rotate through the fixing frame, when the rotating rod rotates on the fixing column, the rotating rod can drive the mounting frame to move upwards, and the mounting frame is driven by the lifting mechanism to move upwards. Therefore, the height of the heating pipe can be adjusted, and the device can adapt to viscose-based fibers with different thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of continuous pre-oxidation technology of viscose-based fibers, specifically a continuous pre-oxidation device for viscose-based fibers. Background Technology

[0002] Viscose-based carbon fiber refers to carbon fiber prepared from viscose fiber through pre-oxidation and carbonization. Viscose fiber is a type of regenerated cellulose fiber, also known as rayon, which is made from natural fibers such as wood, hemp, and cotton through processes such as pulping, sulfonation, curing, and spinning. Pre-oxidation is a common industrial technique used to improve the heat resistance and corrosion resistance of certain materials. Pre-oxidation is typically carried out at high temperatures, altering the material's properties by forming an oxide or oxide layer on the material's surface.

[0003] Currently, the distance between the conveyor belt and the internal heating device in existing pre-oxidation equipment is fixed, resulting in a constant heating temperature. When dealing with viscose fibers of varying thicknesses, excessively thick fibers cannot be oxidized in one pass and require repeated oxidation. Conversely, excessively thin fibers are prone to over-oxidation, rendering them unusable and wasting them. Furthermore, during the collection of pre-oxidized viscose fibers, some fibers adhere to the conveyor belt instead of falling directly into the collection box. Therefore, technological innovation and design optimization are needed to improve the continuous pre-oxidation equipment for viscose fibers. Utility Model Content

[0004] Currently, the distance between the conveyor belt and the internal heating device in existing pre-oxidation equipment is fixed, resulting in a constant heating temperature. When oxidizing viscose fibers of varying thicknesses, excessively thick fibers cannot be oxidized in one pass and require repeated oxidation. Conversely, excessively thin fibers are prone to over-oxidation, rendering them unusable and wasting them. Furthermore, during the collection of pre-oxidized viscose fibers, some fibers adhere to the conveyor belt instead of falling directly into the collection box. To address these issues, this application provides a continuous pre-oxidation device for viscose fibers. A motor drives a lead screw to rotate, which in turn moves a moving plate. The moving plate, via a fixed frame, drives a rotating rod to rotate. As the rotating rod rotates on the fixed column, it moves the mounting frame upward, thereby adjusting the height of the heating tube to accommodate viscose fibers of different thicknesses. Additionally, a cleaning mechanism brushes residual viscose fibers from the conveyor belt into the collection box, preventing them from adhering to the conveyor belt.

[0005] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0006] A continuous pre-oxidation device for viscose-based fibers, comprising:

[0007] The tunnel furnace body has a conveying device inside, which penetrates through the tunnel furnace body. The tunnel furnace body also has an installation frame inside, with several heating tubes fixed to the bottom of the installation frame.

[0008] A collection box is located at the bottom of one end of the conveying device, and the collection box is equipped with a cleaning mechanism inside the collection box that can clean the conveying device.

[0009] A lifting mechanism is located at the top of the tunnel furnace body and is used to drive the mounting frame to move up and down.

[0010] In one possible implementation, the lifting mechanism includes several slots opened on the top of the tunnel furnace body. A fixed column is fixed inside the slot. Two rotating rods are provided on the fixed column. The fixed column passes through the two rotating rods. The bottom of the two rotating rods is rotatably connected to the mounting frame. The top of the two rotating rods is rotatably connected to a fixed frame. A movable plate is provided on the top of the two fixed frames. The movable plate drives the rotating rods to rotate through the fixed frames. When the rotating rods rotate on the fixed columns, the rotating rods will drive the mounting frame to move upward.

[0011] In one possible implementation, vertical plate one and vertical plate two are fixed on the top two sides of the tunnel furnace body, respectively. A motor is fixed on the side of vertical plate one away from vertical plate two. The output end of the motor passes through vertical plate one and is fixed with a lead screw. The other end of the lead screw passes through a movable plate and is rotatably connected to vertical plate two. The lead screw is threadedly connected to the movable plate. The motor drives the lead screw to rotate, and the lead screw drives the movable plate to move.

[0012] In one possible implementation, a guide post is provided between the first vertical plate and the second vertical plate. The guide post passes through the movable plate, and the movable plate can slide on the guide post. The two ends of the guide post are fixedly connected to the first vertical plate and the second vertical plate, respectively. The movable plate will move on the guide post, thereby improving the movement stability of the movable plate.

[0013] In one possible implementation, the cleaning mechanism includes a fixed plate fixed inside the collection box, a U-shaped plate passing through the fixed plate, a brush plate fixed to the top of the U-shaped plate, and a threaded rod rotating at the bottom of the fixed plate. The threaded rod passes through the U-shaped plate, and when the threaded rod rotates, it causes the U-shaped plate to slide on the fixed plate, thereby causing the brush plate to adhere to the conveyor belt on the conveyor device.

[0014] In one possible implementation, the U-shaped plate is threadedly connected to the threaded rod, and the U-shaped plate can slide on the fixed plate, which facilitates the threaded rod to drive the U-shaped plate to move on the fixed plate.

[0015] In one possible implementation, U-shaped blocks are fixed on both sides of the conveying device, and fixing blocks are fixed on both sides of the collection box. The fixing blocks can be inserted into the grooves in the U-shaped blocks to limit the position of the collection box and prevent the conveyor belt on the conveying device from moving the collection box through the cleaning mechanism.

[0016] In one possible implementation, a cylinder is fixed to the top of the fixed frame, and a cylindrical groove is provided at the bottom of the movable plate. The cylinder and the cylindrical groove are slidably connected by a sliding groove. When the rotating rod rotates, it will drive the cylinder to move in the cylindrical groove through the fixed frame.

[0017] In summary, this utility model has at least one of the following beneficial technical effects:

[0018] 1. The motor drives the lead screw to rotate, which in turn drives the moving plate to move. The moving plate drives the rotating rod to rotate through the fixed frame. When the rotating rod rotates on the fixed column, it will drive the mounting bracket to move upward, thereby realizing the adjustment of the height of the heating tube, which is convenient for adapting to viscose-based fibers of different thicknesses.

[0019] 2. By setting up a cleaning mechanism, the residual viscose fibers on the conveyor belt can be brushed into the collection box to prevent them from adhering to the conveyor belt. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side sectional view of the tunnel furnace body of this utility model;

[0022] Figure 3 This is a schematic diagram of the collection box structure of this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention.

[0024] Reference numerals: 1. Conveying device; 2. Tunnel furnace body; 3. Motor; 4. Vertical plate one; 5. Guide column; 6. Moving plate; 7. Lead screw; 8. Vertical plate two; 9. Collection box; 10. U-shaped block; 11. Mounting frame; 12. Rotating rod; 13. Groove; 14. Fixed column; 15. Heating tube; 16. Brush plate; 17. Threaded rod; 18. Fixed plate; 19. U-shaped plate; 20. Fixed block; 21. Fixed frame; 22. Cylinder; 23. Columnar groove. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The instrument placement rack involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] This embodiment describes the specific structure of a continuous pre-oxidation device for viscose-based fibers, as detailed in the following reference. Figures 1-4 As shown, a continuous pre-oxidation device for viscose-based fibers includes:

[0027] The tunnel furnace body 2 has a conveying device 1 inside the tunnel furnace body 2, the conveying device 1 passes through the tunnel furnace body 2, and the tunnel furnace body 2 has a mounting frame 11 inside the tunnel furnace body 2. Several heating tubes 15 are fixed at the bottom of the mounting frame 11.

[0028] Collection box 9 is located at the bottom of one end of conveying device 1. Inside collection box 9 is a cleaning mechanism that can clean conveying device 1.

[0029] The lifting mechanism is located at the top of the tunnel furnace body 2 and is used to drive the mounting frame 11 to move up and down.

[0030] The distance between the conveyor belt and the heating device inside the existing pre-oxidation equipment is fixed, so the heating temperature is constant. When facing viscose fibers of different thicknesses that need to be oxidized, if the thickness is too large, it is difficult to oxidize in one go and requires repeated oxidation. If the thickness is too thin, it is easy to over-oxidize, making the viscose fibers unusable and thus wasting them.

[0031] The lifting mechanism includes several slots 13 formed on the top of the tunnel furnace body 2. A fixed column 14 is fixed inside each slot 13. Two rotating rods 12 are mounted on each fixed column 14, passing through the two rotating rods 12. The bottom of each rotating rod 12 is rotatably connected to a mounting frame 11. A fixed frame 21 is rotatably connected to the top of each rotating rod 12. A movable plate 6 is mounted on the top of each fixed frame 21. The movable plate 6 drives the rotating rods 12 to rotate via the fixed frames 21. When the rotating rods 12 rotate on the fixed columns 14, they drive the mounting frame 11 to move upwards. The top sides of the tunnel furnace body 2 are respectively fixed... There are two vertical plates, 4 and 8. A motor 3 is fixed on the side of the vertical plate 4 away from the vertical plate 8. The output end of the motor 3 passes through the vertical plate 4 and is fixed with a lead screw 7. The other end of the lead screw 7 passes through the movable plate 6 and is rotatably connected to the vertical plate 8. The lead screw 7 is threadedly connected to the movable plate 6. The motor 3 drives the lead screw 7 to rotate, and the lead screw 7 drives the movable plate 6 to move. A guide post 5 is provided between the vertical plate 4 and the vertical plate 8. The guide post 5 passes through the movable plate 6, and the movable plate 6 can slide on the guide post 5. The two ends of the guide post 5 are fixedly connected to the vertical plate 4 and the vertical plate 8 respectively. The movable plate 6 will move on the guide post 5, which improves the movement stability of the movable plate 6.

[0032] Meanwhile, when collecting pre-oxidized viscose fibers, some viscose fibers will be adsorbed on the conveyor belt and will not fall directly into the collection box 9.

[0033] The cleaning mechanism includes a fixed plate 18 fixed inside the collection box 9. A U-shaped plate 19 passes through the fixed plate 18. A brush plate 16 is fixed to the top of the U-shaped plate 19. A threaded rod 17 rotates at the bottom of the fixed plate 18 and passes through the U-shaped plate 19. When the threaded rod 17 rotates, it causes the U-shaped plate 19 to slide on the fixed plate 18, thereby causing the brush plate 16 to adhere to the conveyor belt on the conveyor device 1. The U-shaped plate 19 is threadedly connected to the threaded rod 17 and can slide on the fixed plate 18, which facilitates the movement of the U-shaped plate 19 on the fixed plate 18 by the threaded rod 17. U-shaped blocks 10 are fixed on both sides of the conveyor device 1, and fixed blocks 20 are fixed on both sides of the collection box 9. The fixed blocks 20 can be inserted into the grooves in the U-shaped blocks 10 to limit the movement of the collection box 9 and prevent the conveyor belt on the conveyor device 1 from moving the collection box 9 through the cleaning mechanism.

[0034] More importantly, a cylinder 22 is fixed to the top of the fixed frame 21, and a cylindrical groove 23 is opened at the bottom of the movable plate 6. The cylinder 22 and the cylindrical groove 23 are slidably connected through a sliding groove. When the rotating rod 12 rotates, it will drive the cylinder 22 to move in the cylindrical groove 23 through the fixed frame 21.

[0035] Place the viscose-based fiber on the conveyor 1, turn on the conveyor 1 and the tunnel furnace body 2, the conveyor 1 will send the viscose-based fiber into the tunnel furnace for heating, and then it will fall into the collection box 9. The viscose-based fiber remaining on the conveyor belt will be brushed into the collection box 9 by the brush plate 16.

[0036] When the staff needs to adjust the height of the heating tube 15, the motor 3 is turned on. The motor 3 drives the lead screw 7 to rotate, and the lead screw 7 drives the moving plate 6 to move. The moving plate 6 drives the rotating rod 12 to rotate through the fixed frame 21. When the rotating rod 12 rotates on the fixed column 14, the rotating rod 12 will drive the mounting bracket 11 to move upward, thereby realizing the adjustment of the height of the heating tube 15, which is convenient to adapt to viscose-based fibers of different thicknesses.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A continuous pre-oxidation device for viscose-based fibers, characterized in that, include: The tunnel furnace body (2) is provided with a conveying device (1) inside the tunnel furnace body (2), the conveying device (1) passes through the tunnel furnace body (2), and the tunnel furnace body (2) is provided with an installation frame (11), and a number of heating tubes (15) are fixed at the bottom of the installation frame (11). Collection box (9), the collection box (9) is located at the bottom of one end of the conveying device (1), and the collection box (9) is provided with a cleaning mechanism that can clean the conveying device (1); The lifting mechanism is located on the top of the tunnel furnace body (2) and is used to drive the mounting frame (11) to lift.

2. The viscose-based fiber continuous pre-oxidation equipment as described in claim 1, characterized in that: The lifting mechanism includes several slots (13) opened on the top of the tunnel furnace body (2). A fixed column (14) is fixed inside the slot (13). Two rotating rods (12) are provided on the fixed column (14). The fixed column (14) passes through the two rotating rods (12). The bottom of the two rotating rods (12) is rotatably connected to the mounting frame (11). The top of the two rotating rods (12) is rotatably connected to a fixed frame (21). A movable plate (6) is provided on the top of the two fixed frames (21).

3. The viscose-based fiber continuous pre-oxidation equipment as described in claim 2, characterized in that: The tunnel furnace body (2) has two vertical plates fixed on its top sides, one (4) and the other (8). A motor (3) is fixed on the side of the vertical plate (4) away from the vertical plate (8). The output end of the motor (3) passes through the vertical plate (4) and is fixed with a lead screw (7). The other end of the lead screw (7) passes through the moving plate (6) and is rotatably connected to the vertical plate (8). The lead screw (7) is threadedly connected to the moving plate (6).

4. The viscose-based fiber continuous pre-oxidation equipment as described in claim 3, characterized in that: A guide post (5) is provided between the first vertical plate (4) and the second vertical plate (8). The guide post (5) passes through the movable plate (6). The movable plate (6) can slide on the guide post (5). The two ends of the guide post (5) are fixedly connected to the first vertical plate (4) and the second vertical plate (8) respectively.

5. The viscose-based fiber continuous pre-oxidation equipment as described in claim 1, characterized in that: The cleaning mechanism includes a fixed plate (18) fixed inside the collection box (9), a U-shaped plate (19) passing through the fixed plate (18), a brush plate (16) fixed at the top of the U-shaped plate (19), and a threaded rod (17) rotating at the bottom of the fixed plate (18), the threaded rod (17) passing through the U-shaped plate (19).

6. The viscose-based fiber continuous pre-oxidation equipment as described in claim 5, characterized in that: The U-shaped plate (19) is threadedly connected to the threaded rod (17), and the U-shaped plate (19) can slide on the fixed plate (18).

7. The viscose-based fiber continuous pre-oxidation equipment as described in claim 1, characterized in that: The conveying device (1) has U-shaped blocks (10) fixed on both sides, and the collection box (9) has fixing blocks (20) fixed on both sides. The fixing blocks (20) can be inserted into the grooves in the U-shaped blocks (10).

8. The viscose-based fiber continuous pre-oxidation equipment as described in claim 2, characterized in that: The top of the fixed frame (21) is fixed with a cylinder (22), and the bottom of the movable plate (6) is provided with a cylindrical groove (23). The cylinder (22) and the cylindrical groove (23) are slidably connected by a sliding groove.

Images