Pre-oxidation furnace capable of rectifying air flow

Abstract

The utility model discloses a pre-oxidation furnace capable of carrying out airflow rectification, and particularly relates to the technical field of pre-oxidation furnaces, the pre-oxidation furnace comprises a pre-oxidation furnace main body and an air guide box, the air guide box is fixedly communicated with the outer side of the pre-oxidation furnace main body, the bottom end of the air guide box is fixedly connected with a support frame, and a rectification assembly is arranged in the air guide box; and the rectifying assembly comprises a plurality of flow guide plates, a plurality of sleeve blocks, a lead screw and a plurality of extrusion sleeves, the sleeve blocks are fixedly installed at the top ends of the flow guide plates correspondingly, and the front end and the rear end of the lead screw are fixedly connected with the air guide box. Wind is guided and rectified through the multiple flow guide plates and enters the pre-oxidation furnace body, one long bolt is rotated to be away from the box cover, the extrusion sleeve is rotated to be away from the sleeve block, and therefore fixation between the flow guide plates and the lead screw is relieved, the positions of the flow guide plates are adjusted according to requirements, airflow rectification is facilitated, and the working efficiency is improved. The temperature in the pre-oxidation furnace main body is balanced, and the quality of carbon fibers is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of pre-oxidation furnace technology, and more specifically, to a pre-oxidation furnace capable of airflow rectification. Background Technology

[0002] A pre-oxidation furnace is a key industrial piece of equipment used in the carbon fiber manufacturing process, primarily for the pre-oxidation treatment of PAN fibers. Currently, most pre-oxidation devices in use employ hot air heating, resulting in weak shear force between the raw materials and air, and low airflow capacity.

[0003] A search revealed that Chinese patent CN213113627U discloses a pre-oxidation furnace. The fixed and synchronous rotation of the stretching device in this utility model can eliminate centrifugal force during rotation, enabling the production process to adapt to faster rotation speeds. This strengthens the shearing action between air and raw materials, allowing the raw materials to fully contact the air, improving heat exchange and oxidation efficiency. Furthermore, it can increase the process temperature and accelerate the pre-oxidation rate. Moreover, it can prevent localized ablation caused by raw material stacking during rotation. The bottom of the raw material is constrained by the stretching spring, which can effectively intervene in the natural shrinkage during the reaction process, resulting in considerable yield and performance in the stretching direction.

[0004] When the aforementioned pre-oxidation furnace is in use, the heating element is used to heat the air, and the heated air is blown into the space where the raw materials to be processed are located through the circulating air duct by the fan. However, it is inconvenient to rectify the airflow. The airflow in the pre-oxidation furnace will generate turbulence or dead zones, resulting in some areas having excessively high temperatures and others having excessively low temperatures. This uneven temperature distribution will affect the pre-oxidation process of carbon fibers and cause inconsistent carbon fiber properties. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pre-oxidation furnace capable of airflow rectification, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-oxidation furnace capable of airflow rectification, comprising a pre-oxidation furnace body and an air guide box, wherein the air guide box is fixedly connected to the outside of the pre-oxidation furnace body, a support frame is fixedly connected to the bottom end of the air guide box, and a rectification assembly is provided inside the air guide box, the rectification assembly comprising multiple guide plates, multiple sleeve blocks, a lead screw and multiple extrusion sleeves, the multiple sleeve blocks are respectively fixedly installed on the top ends of the multiple guide plates, both ends of the lead screw are fixedly connected to the air guide box, and the front end of the lead screw passes through the multiple sleeve blocks respectively, the multiple extrusion sleeves are threadedly connected to the lead screw, and one side of the multiple extrusion sleeves respectively contacts the multiple sleeve blocks.

[0007] Furthermore, a sliding rod is fixedly connected inside the air guide box, and the front end of the sliding rod passes through multiple sleeve blocks.

[0008] As can be seen, in the above technical solution, the other sleeve slides on the slide rod, which can prevent the guide plate from deflecting.

[0009] Furthermore, an air inlet pipe is fixedly connected to one side of the air guide box, and an air outlet pipe is fixedly connected to the other side of the air guide box.

[0010] Furthermore, the top of the air guide box is movably provided with two box covers, and the bottom ends of the two box covers extend into the air guide box. Each of the two box covers is provided with a long bolt, and the air guide box is fixed to the two box covers by two long bolts respectively.

[0011] It can be seen that the above technical solution is designed to facilitate sealing of the top of the air guide box.

[0012] Furthermore, both of the box covers are movably fitted with gaskets, and the bottom ends of both gaskets are in contact with the air guide box.

[0013] As can be seen, in the above technical solution, the two gaskets can improve the sealing between the two box covers and the air guide box.

[0014] Furthermore, the air guide box is equipped with a filter assembly, which includes a filter plate and four limiting plates.

[0015] Furthermore, one side of each of the four limiting plates is in contact with both sides of the filter plate, and the bottom of each of the four limiting plates is fixedly connected to the air guide box. The filter plate is movably sleeved on one of the long bolts.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model guides and rectifies the airflow through multiple guide plates, allowing the airflow to enter the pre-oxidation furnace body. By rotating one of the long bolts and moving it away from the cover, and rotating the extrusion sleeve and moving it away from the sleeve block, the fixation between the guide plate and the lead screw is released. The position of the guide plate can be adjusted as needed, and the guide plate is squeezed and fixed by two extrusion sleeves, which facilitates airflow rectification, makes the temperature inside the pre-oxidation furnace body uniform, and effectively improves the quality of carbon fiber.

[0018] 2. This utility model filters the exhaust gas through a filter plate to prevent dust and other debris inside the pre-oxidation furnace from being discharged into the outside air. Similarly, the other cover is moved upwards, and the filter plate is then removed from the gas guide box. The dust and debris adhering to the filter plate are cleaned. The filter plate is then installed in the same way. Four limiting plates and another long bolt restrict the deflection of the filter plate. The structure is simple and easy to use. Attached Figure Description

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

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

[0021] Figure 2 This is a bottom view of the overall structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the air guide box and support frame of this utility model;

[0023] Figure 4 This is a schematic diagram of the assembly structure of the air guide box and the limiting plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the rectifier component structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the assembly structure of the box cover and filter plate of this utility model.

[0026] In the diagram: 1. Pre-oxidation furnace body; 2. Gas guide box; 3. Support frame; 4. Gas inlet pipe; 5. Gas outlet pipe; 6. Box cover; 7. Gasket; 8. Long bolt; 9. Rectifier assembly; 10. Filter plate; 11. Limiting plate; 901. Guide plate; 902. Sleeve block; 903. Lead screw; 904. Extrusion sleeve; 905. Slide rod. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Refer to the instruction manual appendix Figure 1-6The pre-oxidation furnace capable of airflow rectification in this embodiment includes a pre-oxidation furnace body 1 and an air guide box 2. The air guide box 2 is fixedly connected to the outside of the pre-oxidation furnace body 1. A support frame 3 is fixedly connected to the bottom end of the air guide box 2. A rectification assembly 9 is provided inside the air guide box 2. The rectification assembly 9 includes multiple guide plates 901, multiple sleeves 902, a lead screw 903, and multiple extrusion sleeves 904. The multiple sleeves 902 are respectively fixedly installed on the top of the multiple guide plates 901. The lead screw 903 is located at the front and rear ends of the multiple guide plates 901. Both ends are fixedly connected to the air guide box 2, and the front end of the lead screw 903 passes through multiple sleeve blocks 902 respectively. Multiple extrusion sleeves 904 are threadedly connected to the lead screw 903, and one side of each of the multiple extrusion sleeves 904 contacts multiple sleeve blocks 902 respectively. A slide rod 905 is fixedly connected inside the air guide box 2, and the front end of the slide rod 905 passes through multiple sleeve blocks 902 respectively. An air inlet pipe 4 is fixedly connected to one side of the air guide box 2, and an air outlet pipe 5 is fixedly connected to the other side of the air guide box 2.

[0029] Furthermore, the top of the air guide box 2 is movably provided with two box covers 6, and the bottom ends of the two box covers 6 extend into the air guide box 2. Each of the two box covers 6 is provided with a long bolt 8, and the air guide box 2 is fixed to the two box covers 6 by the two long bolts 8 respectively. Each of the two box covers 6 is movably fitted with a gasket 7, and the bottom ends of the two gaskets 7 are in contact with the air guide box 2. The air guide box 2 is provided with a filter assembly, which includes a filter plate 10 and four limiting plates 11. One side of the four limiting plates 11 is in contact with the two sides of the filter plate 10, and the bottom ends of the four limiting plates 11 are fixedly connected to the air guide box 2. The filter plate 10 is movably fitted on one of the long bolts 8.

[0030] The filter plate 10 filters the exhaust gas to prevent dust and other debris in the pre-oxidation furnace body 1 from being discharged into the outside air. Similarly, the other cover 6 is moved upward, and the filter plate 10 is taken out from the air guide box 2. The dust and debris adhering to the filter plate 10 are cleaned. The filter plate 10 is installed in the same way. Four limiting plates 11 and another long bolt 8 restrict the deflection of the filter plate 10. The structure is simple and easy to use. At the same time, the two gaskets 7 can improve the sealing between the two covers 6 and the air guide box 2.

[0031] The usage method of this embodiment is as follows:

[0032] In use, air enters the air guide box 2 through the air inlet pipe 4, then enters the pre-oxidation furnace body 1, and finally exits through the air outlet pipe 5, forming a complete air duct. Multiple guide plates 901 guide and rectify the airflow, allowing it to enter the pre-oxidation furnace body 1. Rotating one of the long bolts 8 away from the cover 6 releases the fixation between the cover 6 and the air guide box 2. Moving the cover 6 upward away from the air guide box 2 and rotating the extrusion sleeve 904 away from the sleeve block 902 releases the fixation between the guide plate 901 and the lead screw 903. Adjusting the position of the guide plate 901 as needed and using two extrusion sleeves 904 to press and fix the guide plate 901 facilitates airflow rectification, ensuring a uniform temperature within the pre-oxidation furnace body 1 and effectively improving the quality of the carbon fiber. Meanwhile, another sleeve block 902 slides on the slide rod 905 to prevent the guide plate 901 from deflecting.

[0033] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0034] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pre-oxidation furnace capable of airflow rectification, comprising a pre-oxidation furnace body (1) and a gas guide box (2), wherein the gas guide box (2) is fixedly connected to the outside of the pre-oxidation furnace body (1), characterized in that: The bottom end of the air guide box (2) is fixedly connected to a support frame (3). The air guide box (2) is provided with a rectifier assembly (9). The rectifier assembly (9) includes multiple guide plates (901), multiple sleeves (902), a lead screw (903), and multiple extrusion sleeves (904). The multiple sleeves (902) are respectively fixedly installed on the top of the multiple guide plates (901). The front and rear ends of the lead screw (903) are fixedly connected to the air guide box (2), and the front end of the lead screw (903) passes through the multiple sleeves (902). The multiple extrusion sleeves (904) are threadedly connected to the lead screw (903), and one side of the multiple extrusion sleeves (904) is in contact with the multiple sleeves (902).

2. The pre-oxidation furnace capable of airflow rectification according to claim 1, characterized in that: The air guide box (2) is fixedly connected to a slide rod (905), and the front end of the slide rod (905) passes through multiple sleeve blocks (902).

3. The pre-oxidation furnace capable of airflow rectification according to claim 1, characterized in that: An air inlet pipe (4) is fixedly connected to one side of the air guide box (2), and an air outlet pipe (5) is fixedly connected to the other side of the air guide box (2).

4. The pre-oxidation furnace capable of airflow rectification according to claim 1, characterized in that: The top of the air guide box (2) is movably provided with two box covers (6), and the bottom ends of the two box covers (6) extend into the air guide box (2). Both box covers (6) are provided with long bolts (8), and the air guide box (2) and the two box covers (6) are respectively fixed by two long bolts (8).

5. The pre-oxidation furnace capable of airflow rectification according to claim 4, characterized in that: Both of the box covers (6) are fitted with gaskets (7), and the bottom ends of the two gaskets (7) are in contact with the air guide box (2).

6. The pre-oxidation furnace capable of airflow rectification according to claim 1, characterized in that: The air guide box (2) is equipped with a filter assembly inside, which includes a filter plate (10) and four limiting plates (11).

7. The pre-oxidation furnace capable of airflow rectification according to claim 6, characterized in that: One side of each of the four limiting plates (11) is in contact with both sides of the filter plate (10), and the bottom of each of the four limiting plates (11) is fixedly connected to the air guide box (2). The filter plate (10) is movably sleeved on one of the long bolts (8).

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