Fresh air circulating device of carbon fiber oxidation furnace

Abstract

The utility model discloses a fresh air circulation device of a carbon fiber oxidation furnace. The fresh air circulation device comprises a carbon fiber oxidation furnace body, a fresh air circulation machine and a dustproof net, the fresh air circulation machine is arranged in the center of the top of the carbon fiber oxidation furnace body; the fresh air circulation machine is characterized in that a limiting mechanism is arranged at the top of the fresh air circulation machine and used for installing the dustproof net on the fresh air circulation machine in a limiting mode. The dustproof net used on the fresh air circulation machine is fixed through the limiting mechanism which is simple in design, the fresh air circulation machine body is fixed through the fixing mechanism, the fixing device can adapt to fresh air circulation machines of different sizes, and the stable fixing effect is provided for the fresh air circulation machines; and meanwhile, the mounting and dismounting efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon fiber oxidation furnaces, and specifically relates to a fresh air circulation device for a carbon fiber oxidation furnace. Background Art

[0002] PAN-based carbon fiber has the characteristics of high specific strength, high specific modulus, high temperature resistance, fatigue resistance, creep resistance, conductivity, heat insulation and small thermal expansion coefficient. It is a new type of carbon material with comprehensive excellent performance. It is widely used in aviation, aerospace, chemical, construction and sporting goods industries. When the oxidation furnace oxidizes the carbon fiber, a fresh air circulation device is required, which not only does not destroy the isothermal zone in the furnace, but also achieves the purpose of supplying oxygen to the furnace.

[0003] The existing fresh air circulation device of the carbon fiber oxidation furnace is not easy to disassemble and the operation is relatively cumbersome, which increases the labor intensity of the staff and is not conducive to subsequent maintenance. At the same time, the fresh air circulation device has no protective function, and dust can easily enter the inside of the device, causing dust accumulation, affecting the circulation effect, and reducing the service life.

[0004] The Chinese patent application number 202221159489.3 discloses a fresh air circulation device for a carbon fiber oxidation furnace, including an oxidation furnace body, a fresh air circulation machine near the center of the top of the oxidation furnace body, the bottom of the fresh air circulation machine and the top of the oxidation furnace body are arranged to fit each other, and the top of the oxidation furnace body is fixedly connected to a fixing plate near the left and right sides, and the two fixing plates are fixedly connected to a first bearing near the center. The installation device of the oxidation furnace body and the fresh air circulation machine in this application is complex in structure and not easy to replace and repair.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a fresh air circulation device for a carbon fiber oxidation furnace, which simplifies the installation of a fresh air circulation machine on the carbon fiber oxidation furnace and is easy to operate and maintain.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] The utility model provides a fresh air circulation device for a carbon fiber oxidation furnace, comprising: a carbon fiber oxidation furnace body, a fresh air circulation machine and a dustproof net; the fresh air circulation machine is arranged at the top center of the carbon fiber oxidation furnace body;

[0009] Furthermore, a limiting mechanism is provided on the top of the fresh air circulation machine for limiting the installation of the dustproof net on the fresh air circulation machine.

[0010] Furthermore, the limiting mechanism comprises: two mounting plates arranged opposite to each other, the two mounting plates being respectively located on two sides of the fresh air circulation machine;

[0011] The adjacent sides of the mounting plates are connected via two connecting plates; a preset distance is set between the two connecting plates.

[0012] Furthermore, the two connecting plates are each provided with a strip groove, and the two strip grooves are arranged opposite to each other and are used for placing the dustproof net.

[0013] Furthermore, a second fixing piece is provided in the middle of the two connecting plates for limiting and fixing the dustproof net.

[0014] Advantageously, by providing the limiting mechanism, the dust screen of the fresh air circulation machine can be effectively fixed and protected, ensuring its normal operation and extending its service life.

[0015] Furthermore, the limiting mechanism is further provided with: a movable rod, two movable rods respectively passing through the mounting plates arranged opposite to each other;

[0016] A first magnet is provided at one end of the two movable rods close to the fresh air circulation machine, and a spring is provided between the first magnet and the mounting plate.

[0017] Furthermore, a second magnet is adsorbed on one side of the two first magnets close to the fresh air circulation machine, and the second magnet cooperates with the first magnet to realize the installation of the limiting mechanism on the fresh air circulation machine.

[0018] Advantageously, by adding design elements such as the movable rod, the first magnet, the spring, and the second magnet, the limit mechanism not only has better versatility and stability, but also realizes the function of quick installation and removal. These improvements make the installation and maintenance of the dust screen more convenient and efficient, and also improve the overall performance and reliability of the fresh air circulation machine.

[0019] Furthermore, the fresh air circulation device of the carbon fiber oxidation furnace is provided with a fixing mechanism, which is arranged on the top of the carbon fiber oxidation furnace body and is used to fix the fresh air circulation machine.

[0020] Furthermore, the fixing mechanism includes: two fixing plates fixedly arranged on two opposite sides of the top of the carbon fiber oxidation furnace body;

[0021] Two threaded rods respectively penetrate the corresponding fixing plates, and the ends of the two threaded rods close to each other are each provided with a first bearing;

[0022] The two clamping plates are respectively arranged at one end of the two first bearings that are close to each other; the sides of the two clamping plates that are close to each other are both arranged to fit each other with the fresh air circulation machine.

[0023] Advantageously, the fixing mechanism is simple and effective in design, can adapt to fresh air circulation machines of different sizes, and provide a stable fixing effect for them. At the same time, the position of the clamping plate can be adjusted by rotating the threaded rod, which is easy to operate and improves the efficiency of installation and removal.

[0024] Furthermore, a first fixing piece is provided on the inner side of each of the two fixing plates, and the first fixing piece limits and fixes the threaded rod.

[0025] Further, the two first fixing members each include: a U-shaped plate, the U-shaped plate is fixedly mounted on the fixing plate, and the opening faces the threaded rod;

[0026] A clamping block is movably arranged in the U-shaped groove of the U-shaped plate.

[0027] Furthermore, a fixing block is provided on one side of the two clamping blocks facing the threaded rod, and the fixing block is used to fix the threaded rod;

[0028] Limit blocks are provided at both ends of the clamping block on a side away from the threaded rod, and the limit blocks limit the moving distance of the clamping block in the U-shaped plate.

[0029] Advantageously, the fixing mechanism forms a stable and adjustable fixing mechanism by providing a fixing plate, a U-shaped plate, a clamping block and a limit block; it not only provides a stable fixing effect, but also allows fine-tuning according to actual needs to adapt to fresh air circulation machines of different models or sizes.

[0030] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0031] 1. The utility model can fix the fresh air circulation machine body through the fixing mechanism. The fixing mechanism is simple and effective in design, can adapt to fresh air circulation machines of different sizes, and provide a stable fixing effect for them. At the same time, the position of the clamping plate can be adjusted by rotating the threaded rod, which is easy to operate and improves the efficiency of installation and disassembly.

[0032] 2. The fixing mechanism in the fresh air circulation device of the carbon fiber oxidation furnace in the utility model forms a stable and adjustable fixing mechanism through the combination of a fixing plate, a U-shaped plate, a clamping block and a limit block; it not only provides a stable fixing effect, but also allows fine-tuning according to actual needs to adapt to fresh air circulation machines of different models or sizes.

[0033] 3. The utility model can limit the dust screen through the limiting mechanism. Through the setting of the limiting mechanism, the dust screen of the fresh air circulation machine can be effectively fixed and protected to ensure its normal operation and extend its service life.

[0034] 4. The utility model adds design elements such as a movable rod, a first magnet, a spring and a second magnet to the limit mechanism. The limit mechanism not only has better versatility and stability, but also realizes the function of rapid installation and removal. These improvements make the installation and maintenance of the dust screen more convenient and efficient, and also improve the overall performance and reliability of the fresh air circulation machine.

[0035] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0037] Figure 1 It is a schematic diagram of the first three-dimensional structure of the utility model;

[0038] Figure 2 It is a second three-dimensional structural schematic diagram of the utility model;

[0039] Figure 3 This is a schematic diagram of the first internal structure of the utility model;

[0040] Figure 4 This is an enlarged structural diagram of part A of the utility model;

[0041] Figure 5 It is a second internal structure schematic diagram of the utility model;

[0042] Figure 6 It is a schematic diagram of the enlarged structure of part B of the utility model.

[0043] In the figure: 1. Carbon fiber oxidation furnace body; 2. Fresh air circulation machine; 301. Fixed plate; 302. Threaded rod; 303. First bearing; 304. Clamping plate; 305. U-shaped plate; 306. Block; 307. Limit block; 308. Fixed block; 401. Mounting plate; 402. Connecting plate; 403. Strip groove; 404. Circular groove; 405. Second bearing; 406. Rotating rod; 407. Strip baffle; 5. Dustproof net; 601. Movable rod; 602. Spring; 603. First magnet; 604. Second magnet.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 6 As shown, the utility model provides a fresh air circulation device for a carbon fiber oxidation furnace, comprising: a carbon fiber oxidation furnace body 1, a fresh air circulation machine 2 and a dustproof net 5; the fresh air circulation machine 2 is arranged at the top center of the carbon fiber oxidation furnace body 1, and the bottom is arranged to fit the top of the carbon fiber oxidation furnace body 1.

[0049] Furthermore, a limiting mechanism is provided on the top of the fresh air circulation machine 2 for limiting the installation of the dustproof net 5 on the fresh air circulation machine 2 .

[0050] Furthermore, the limiting mechanism includes: two mounting plates 401 arranged opposite to each other, and the two mounting plates 401 are respectively located on two sides of the fresh air circulation machine 2;

[0051] The adjacent sides of the mounting plates 401 are connected via two connecting plates 402 ; a preset distance is set between the two connecting plates 402 .

[0052] In this embodiment, in order to prevent dust from entering the inner cavity of the fresh air circulation machine 2, improve the circulation effect of the fresh air circulation machine 2, and extend the service life of the fresh air circulation machine 2, a dustproof net 5 is placed on the upper part of the fresh air circulation machine 2, and the dustproof net 5 is installed on the top of the fresh air circulation machine 2 through a limiting mechanism.

[0053] Specifically, the limiting mechanism includes two mounting plates 401 disposed opposite to each other, and the two mounting plates 401 are located on both sides of the fresh air circulation machine 2, so as to ensure that when the limiting mechanism is placed on the top of the fresh air circulation machine 2, the dustproof net 5 can be close to the top of the fresh air circulation machine 2 to form an effective dustproof barrier. The two mounting plates 401 are connected by two connecting plates 402 disposed opposite to each other, and the distance between the two connecting plates 402 is at least the width or length of the dustproof net 5, so as to ensure that the dustproof net 5 can be firmly clamped in the limiting mechanism and is not easily moved or fallen off due to wind or other factors.

[0054] Furthermore, the two connecting plates 402 are each provided with a strip groove 403 , and the two strip grooves 403 are arranged opposite to each other and are used to place the dustproof net 5 .

[0055] Furthermore, a second fixing piece is provided at the middle position of the two connecting plates 402 for limiting and fixing the dustproof net 5 .

[0056] In this embodiment, the dust net 5 is installed and fixed by the connection plate 402 and the second fixing member. The two connection plates 402 are provided with a strip groove 403, and the two strip grooves 403 are arranged opposite to each other. The arrangement of the strip groove 403 can provide a precise placement space for the dust net 5, so that it can be easily embedded in the strip groove 403. A second fixing member is provided in the middle position of the connection plate 402 where the strip groove 403 is not provided, to limit and fix the dust net 5, ensure the stability and reliability of the dust net 5 after installation, and effectively prevent the dust net 5 from being displaced or falling off due to wind or other factors.

[0057] Specifically, the second fixing member includes a circular groove 404, a second bearing 405, a rotating rod 406, and a strip baffle 407. The circular groove 404 is provided on the connecting plate 402, and the second bearing 405 is installed in the circular groove 404. The upper end of the second bearing 405 is connected to the rotating rod 406. The rotating rod 406 extends upward from the connecting end with the second bearing 405, and the end protrudes from the connecting plate 402 and is connected to the strip baffle 407. When installing and placing the dustproof net 5, the strip baffle 407 is moved so that it is in a horizontal state with the strip groove 403, and then the dustproof net 5 is placed in the strip groove 403, and then the strip baffle 407 is moved back to the original position. At this time, the strip baffle 407 fixes the dustproof net 5 in the strip groove 403, and the dustproof net 5 is firmly fixed. The installation process of the dustproof net 5 is simple to operate, and the fixing effect is significant, which can ensure the stability of the dustproof net 5 during use and effectively prevent dust from entering the interior of the fresh air circulation machine 2.

[0058] Furthermore, the limiting mechanism is further provided with: a movable rod 601, and two movable rods 601 respectively pass through the mounting plates 401 arranged opposite to each other;

[0059] A first magnet 603 is provided at one end of the two movable rods 601 close to the fresh air circulation machine 2 , and a spring 602 is provided between the first magnet 603 and the mounting plate 401 .

[0060] Furthermore, the second magnets 604 are attracted to one side of the two first magnets 603 close to the fresh air circulation machine 2 , and the second magnets 604 cooperate with the first magnets 603 to realize the installation of the limiting mechanism on the fresh air circulation machine 2 .

[0061] In this embodiment, the limiting mechanism is also provided with a movable rod 601, and the two movable rods 601 respectively pass through the relatively arranged mounting plates 401. A first magnet 603 is provided on the side of the movable rod 601 close to the fresh air circulation machine 2, and the first magnet 603 is connected to the mounting plate 401 through a spring 602; a second magnet 604 is adsorbed on the side of the first magnet 603 facing the fresh air circulation machine 2.

[0062] Specifically, when installing the limiting mechanism on the fresh air circulation machine 2, firstly, the second magnet 604 is adsorbed and positioned on the surface of the fresh air circulation machine 2, and then the movable rod 601 is pulled. At this time, the spring 602 is compressed due to the action of the pulling force. When the position of the first magnet 603 corresponds to the position of the second magnet 604, the pulling force on the movable rod 601 is released, and the first magnet 603 is adsorbed together with the second magnet 604 under the push of the restoring force of the spring 602. The limiting mechanism is stably and accurately installed on the fresh air circulation machine 2 through the strong adsorption between the magnets. At the same time, the combination of the movable rod 601 and the spring 602 provides a certain adjustment space, making the installation process more flexible and convenient.

[0063] The fresh air circulation device of the carbon fiber oxidation furnace is provided with a fixing mechanism, which is arranged on the top of the carbon fiber oxidation furnace body 1 and is used to fix the fresh air circulation machine 2.

[0064] In this embodiment, the fresh air circulation device of the carbon fiber oxidation furnace includes a carbon fiber oxidation furnace body 1 and a fresh air circulation machine 2 arranged at the center of the upper part of the carbon fiber oxidation furnace body 1. The fresh air circulation machine 2 is fixed to the upper part of the carbon fiber oxidation furnace body 1 by a fixing mechanism to ensure its stability and reliability during operation. After the fresh air circulation machine 2 is fixed to the carbon fiber oxidation furnace body 1, the top of the carbon fiber oxidation furnace body 1 and the bottom of the fresh air circulation machine 2 fit each other to achieve efficient fresh air circulation, thereby optimizing the overall operation efficiency of the carbon fiber oxidation furnace.

[0065] Furthermore, the fixing mechanism includes: two fixing plates 301, fixedly arranged on two opposite sides of the top of the carbon fiber oxidation furnace body 1;

[0066] Two threaded rods 302 penetrate the corresponding fixing plates 301 respectively, and the adjacent ends of the two threaded rods 302 are provided with first bearings 303;

[0067] The two clamping plates 304 are respectively arranged at one end of the two first bearings 303 that are close to each other; the two sides of the two clamping plates 304 that are close to each other are both arranged to fit each other with the fresh air circulation machine 2 .

[0068] In this embodiment, the fixing mechanism for fixing the fresh air circulation machine 2 on the carbon fiber oxidation furnace body 1 includes two fixing plates 301, two threaded rods 302 and two clamping plates 304, which are respectively arranged in a corresponding set to ensure the symmetry and balance of the structure. The two clamping plates 304 are respectively installed on the opposite sides of the top of the carbon fiber oxidation furnace body 1 to provide a stable clamping force; the two threaded rods 302 pass through the corresponding fixing plates 301, and pass through the first bearing 303 and the clamping plate 304 at the end close to the fresh air circulation machine 2, so that the adjustment is more flexible and the fixing effect of the fixing mechanism is improved.

[0069] Specifically, when the fresh air circulation machine 2 needs to be installed on the carbon fiber oxidation furnace body 1: first, by rotating the threaded rod 302, the two clamping plates 304 are moved away from each other, thereby increasing the distance between the two, so that the fresh air circulation machine 2 is placed between the two clamping plates 304; after the placement of the fresh air circulation machine 2 is completed, the threaded rod 302 is rotated in the opposite direction, and the two clamping plates 304 are gradually approached to the fresh air circulation machine 2 under the drive of the threaded rod 302, until the two clamping plates 304 are tightly fitted with the fresh air circulation machine 2, so that the fresh air circulation machine 2 is firmly fixed on the carbon fiber oxidation furnace body 1, ensuring the stable operation of the entire system.

[0070] Furthermore, a first fixing member is disposed on the inner side of each of the two fixing plates 301 , and the first fixing member limits and fixes the threaded rod 302 .

[0071] In this embodiment, a first fixing member is provided on the inner side of the two fixing plates 301, that is, the first fixing member is provided on the side of the two fixing plates 301 facing the fresh air circulation machine 2. When the threaded rod 302 drives the clamping plate 304 to move to the set position and the fresh air circulation machine 2 is firmly fixed on the carbon fiber oxidation furnace body 1, the threaded rod 302 can be locked by the first fixing member to prevent the threaded rod 302 from moving due to vibration during the operation of the fresh air circulation device of the carbon fiber oxidation furnace, thereby ensuring the stable position of the fresh air circulation machine 2 on the carbon fiber oxidation furnace body 1, providing a strong guarantee for the stable operation of the entire system.

[0072] Further, the two first fixing members each include: a U-shaped plate 305, the U-shaped plate 305 is fixedly mounted on the fixing plate 301, and the opening faces the threaded rod 302;

[0073] The clamping block 306 is movably disposed in the U-shaped groove of the U-shaped plate 305 .

[0074] Furthermore, a fixing block 308 is provided on one side of the two clamping blocks 306 facing the threaded rod 302, and the fixing block 308 is used to fix the threaded rod 302;

[0075] Limit blocks 307 are provided at both ends of the clamping block 306 on a side away from the threaded rod 302 , and the limit blocks 307 limit the moving distance of the clamping block 306 in the U-shaped plate 305 .

[0076] In this embodiment, each fixing member includes a U-shaped plate 305 and a clamping block 306. The U-shaped plate 305 is fixedly mounted on the side of the fixing plate 301 facing the fresh air circulation machine 2, and its opening faces the direction of the threaded rod 302. Specifically, the U-shaped plate 305 includes two parallel side plates and an arc-shaped plate connecting the two side plates, one of which is fixedly mounted on the fixing plate 301, and the opening of the U-shaped groove formed by the two side plates faces the direction of the threaded rod 302. A clamping block 306 that can only move up and down is installed in the U-shaped groove. When the threaded rod 302 is adjusted to a suitable position, the clamping block 306 can move up and down to move the threaded rod 302, effectively preventing the threaded rod 302 from loosening or moving during operation, and ensuring the stability of the entire system.

[0077] In this embodiment, in order to limit the stable movement of the block 306 in the U-shaped groove and prevent it from accidentally disengaging, limit blocks 307 are provided at both upper and lower ends of the side of the block 306 away from the threaded rod 302 to limit the moving distance of the block 306 in the U-shaped groove, thereby ensuring its safety and stability. In order to achieve the accurate limit fixation of the block 306 to the threaded rod 302, a fixing block 308 is provided on the side of the block 306 facing the threaded rod 302. When the clamping plate 304 is moved to the set position by adjusting the threaded rod 302, the fixing block 308 can be accurately clamped in the thread groove of the threaded rod 302, which can not only ensure the fixing effect of the threaded rod 302, but also be easy to operate and firmly fixed, providing a stable and reliable fixing mechanism for the entire fresh air circulation device.

[0078] When it is necessary to use the fresh air circulation machine 2 to assist the carbon fiber oxidation furnace in working, first, the fresh air circulation machine 2 needs to be fixed and installed, specifically including: first, pull the clamping block 306 upward to disengage the fixing block 308 on the clamping block 306 from the threaded groove of the threaded rod 302, thereby temporarily releasing the fixing effect on the threaded rod 302; secondly, rotate the threaded rod 302 by the handle set on the threaded rod 302, rotate the two threaded rods 302 to a suitable position, and then place the fresh air circulation machine 2 between the two clamping plates 304; then, after the fresh air circulation machine 2 is placed, turn the handle set on the threaded rod 302 back to The threaded rod 302 is rotated in the opposite direction so that the clamping plate 304 will move toward each other and tightly clamp the main fresh air circulation machine 2, effectively preventing it from being displaced during operation; finally, after the fresh air circulation machine 2 is fixed, the pulling force on the clamping block 306 is released. At this time, the clamping block 306 falls on the threaded rod 302 due to gravity, and the fixing block 308 of the clamping block 306 is clamped in the thread groove of the threaded rod 302, thereby firmly fixing the threaded rod 302 and ensuring that the threaded rod 302 will not rotate due to vibration during the use of the fresh air circulation device of the carbon fiber oxidation furnace, thereby ensuring the fixation and reliability of the fresh air circulation machine 2.

[0079] Second, after the fresh air circulation machine 2 is fixed, the dust screen 5 needs to be installed in the fresh air circulation machine 2, which specifically includes: first, the second magnet 604 of the limiting mechanism is adsorbed on the outside of the fresh air circulation machine 2; then, the staff pulls the movable rod 601 outward, and the two movable rods 601 respectively drive the first magnet 603 to move, and compress the spring 602 to make them move away from each other. When the first magnet 603 is pulled to a suitable position, that is, the mounting plate 401 of the limiting mechanism is just at the position on both sides of the fresh air circulation machine 2, the movable rod 60 is stopped. 1; Finally, place the mounting plate 401 on both sides of the fresh air circulation machine 2, and ensure that the first magnet 603 and the second magnet 604 are in an aligned position; then, release the pulling force on the movable rod 601, at this time the spring 602 will return to its original state, pushing the first magnet 603 to move toward the second magnet 604, and finally adsorbing with the second magnet 604, through the magnetic force of the first magnet 603 and the second magnet 604, the limiting mechanism will be firmly installed on the fresh air circulation machine 2, providing an installation basis for the installation of the dustproof net 5.

[0080] Third, after the limiting mechanism is installed at the installation position of the fresh air circulation machine 2, the dustproof net 5 is installed, which specifically includes: first, rotating the strip baffle 407. Since the strip baffle 407 is connected to the second bearing 405 through the movable rod 601, the strip baffle 407 is rotatable. After the two strip baffles 407 are rotated to the appropriate position, that is, rotated to a position that is horizontal with the strip groove 403 and does not affect the placement of the dustproof net 5; then, the dustproof net 5 is placed inside the strip groove 403, and it is ensured that the dustproof net 5 is placed flat in the strip groove 403 so that it fits tightly on the upper surface of the strip groove 403; finally, after the dustproof net 5 is placed, the strip baffle 407 is rotated to reset to complete the stable installation of the dustproof net 5. Through the synergistic effect of the strip groove 403 and the strip baffle 407, the dustproof net 5 is firmly installed on the fresh air circulation machine 2, and its limitation and fixation are achieved, ensuring the durability and reliability of the dustproof effect.

[0081] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A fresh air circulation device for a carbon fiber oxidation furnace, comprising: A carbon fiber oxidation furnace body (1), a fresh air circulation machine (2) and a dust screen (5); the fresh air circulation machine (2) is arranged at the top center of the carbon fiber oxidation furnace body (1); characterized in that: A limiting mechanism is provided on the top of the fresh air circulation machine (2) for limiting the installation of the dustproof net (5) on the fresh air circulation machine (2); The limiting mechanism comprises: two mounting plates (401) arranged opposite to each other, the two mounting plates (401) being respectively located on two sides of the fresh air circulation machine (2); The adjacent sides of the mounting plates (401) are connected via two connecting plates (402); a preset distance is provided between the two connecting plates (402); Movable rods (601), wherein two movable rods (601) respectively pass through the mounting plates (401) arranged opposite to each other; The two movable rods (601) are each provided with a first magnet (603) at one end close to the fresh air circulation machine (2), and a spring (602) is provided between the first magnet (603) and the mounting plate (401); The two first magnets (603) are each adsorbed with a second magnet (604) on one side close to the fresh air circulation machine (2), and the second magnet (604) cooperates with the first magnet (603) to realize the installation of the limiting mechanism on the fresh air circulation machine (2).

2. The fresh air circulation device for a carbon fiber oxidation furnace according to claim 1, characterized in that: The two connecting plates (402) are both provided with a strip groove (403), and the two strip grooves (403) are arranged opposite to each other and are used to place the dustproof net (5).

3. The fresh air circulation device for a carbon fiber oxidation furnace according to claim 2, characterized in that: A second fixing member is provided at the middle position of the two connecting plates (402) for limiting and fixing the dustproof net (5).

4. The fresh air circulation device for a carbon fiber oxidation furnace according to any one of claims 1 to 3, characterized in that: The fresh air circulation device of the carbon fiber oxidation furnace is provided with a fixing mechanism, which is arranged on the top of the carbon fiber oxidation furnace body (1) and is used to fix the fresh air circulation machine (2); The fixing mechanism comprises: two fixing plates (301) fixedly arranged on two opposite sides of the top of the carbon fiber oxidation furnace body (1); Two threaded rods (302) respectively penetrate the corresponding fixing plates (301), and the adjacent ends of the two threaded rods (302) are each provided with a first bearing (303); The two clamping plates (304) are respectively arranged at one end of the two first bearings (303) that are close to each other; the sides of the two clamping plates (304) that are close to each other are arranged to fit together with the fresh air circulation machine (2).

5. The fresh air circulation device for a carbon fiber oxidation furnace according to claim 4, characterized in that: A first fixing member is provided on the inner side of each of the two fixing plates (301), and the first fixing member is used to limit and fix the threaded rod (302).

6. The fresh air circulation device for a carbon fiber oxidation furnace according to claim 5, characterized in that: The two first fixing members each comprise: a U-shaped plate (305), the U-shaped plate (305) being fixedly mounted on the fixing plate (301), with an opening facing the threaded rod (302); A clamping block (306), wherein the clamping block (306) is movably arranged in the U-shaped groove of the U-shaped plate (305).

7. The fresh air circulation device for a carbon fiber oxidation furnace according to claim 6, characterized in that: A fixing block (308) is provided on one side of the two clamping blocks (306) facing the threaded rod (302), and the fixing block (308) is used to fix the threaded rod (302); Limit blocks (307) are provided at both ends of the clamping block (306) on the side away from the threaded rod (302), and the limit blocks (307) limit the moving distance of the clamping block (306) in the U-shaped plate (305).

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