Heat dissipation structure of optical fiber amplifier

By designing a fiber amplifier heat dissipation structure with dustproof plates and cleaning structures, the problem of dust entering the device is solved, and effective dust protection and stability of heat dissipation efficiency are achieved.

CN119542889APending Publication Date: 2025-02-28SHANGHAI SODILONG AUTOMATION CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202411641773.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-02-28

AI Technical Summary

Technical Problem

The heat generated by the optical fiber amplifier during operation needs to be effectively dissipated, but some heat dissipation structures can easily cause dust to enter the device when cleaning dust, affecting the internal components.

Method used

A heat dissipation structure including the front plate, the shell, the back plate and the ventilation duct were designed. The ventilation duct was equipped with a dustproof plate and a cleaning structure. The gears and racks were driven to mesh with the motor, and the dustproof plate and the cleaning brush were moved to ensure that the dust did not enter the machine during the cleaning process.

Benefits of technology

Effectively prevent dust from entering the fiber amplifier, reduce the impact of dust on components, extend the service life of the equipment, and ensure the stable performance of the heat dissipation structure.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119542889A_ABST
    Figure CN119542889A_ABST
Patent Text Reader

Abstract

The invention belongs to the field of optical fiber amplifiers, and particularly relates to a heat dissipation structure of an optical fiber amplifier, the heat dissipation structure comprises a front plate, a shell and a back plate, the back plate is provided with a ventilation pipeline, the ventilation pipeline is provided with a heat dissipation structure, the heat dissipation structure comprises a placing plate, the inner wall of the shell is fixedly connected with the placing plate, and the inner wall of the shell is fixedly connected with the placing plate. A cooling fan is fixedly connected to the top of the placement plate, a mounting ring is fixedly connected to the outer wall of the ventilation pipeline, a first motor is fixedly connected to the inner wall of the mounting ring, and a gear is fixedly connected to the output end of the first motor. According to the heat dissipation structure of the optical fiber amplifier, heat dissipation work can be conducted through the heat dissipation fan, it is ensured that equipment keeps a stable working temperature during operation, meanwhile, when the device cleans the filter plate, the dustproof plate can seal the ventilation pipeline during cleaning, dust is prevented from entering the machine, the dustproof effect is further enhanced, and the service life of the equipment is prolonged. The influence of dust on internal elements is reduced, and the service life of equipment is prolonged.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the technical field of optical fiber amplifiers, and in particular to a heat dissipation structure of an optical fiber amplifier. Background Art

[0002] Fiber amplifiers play a vital role in modern optical communication systems. They amplify input optical signals by utilizing the principle of stimulated emission of rare earth ions in doped optical fibers. With the continuous development of optical communication technology, the performance requirements for fiber amplifiers are becoming higher and higher.

[0003] At present, during the operation, the optical fiber amplifier generates a large amount of heat, and a heat dissipation structure is required to effectively dissipate the heat to ensure its performance and extend the life of the device. However, when some heat dissipation structures are cleaned, dust is easily allowed to enter the interior of the device, and the dust will affect the internal components. In view of this, we propose a heat dissipation structure for an optical fiber amplifier. Summary of the invention

[0004] The main purpose of the present invention is to provide a heat dissipation structure of an optical fiber amplifier, which can solve the problems raised in the above background technology.

[0005] To achieve the above object, the heat dissipation structure of the optical fiber amplifier proposed in the present invention comprises a front plate, a shell, and a back plate, wherein a ventilation duct is provided on the back plate, and a heat dissipation structure is provided on the ventilation duct, wherein the heat dissipation structure comprises:

[0006] A placement plate, the inner wall of the shell is fixedly connected with the placement plate, and the top of the placement plate is fixedly connected with a cooling fan;

[0007] A mounting ring, wherein the outer wall of the ventilation duct is fixedly connected with the mounting ring, and the inner wall of the mounting ring is fixedly connected with a motor 1;

[0008] Gear, the output end of the motor is fixedly connected with a gear, and a rack is arranged below the gear.

[0009] Preferably, the inner wall of the ventilation duct is slidably connected with a dustproof plate, the outer wall of the dustproof plate is fixedly connected with a guide sub-plate, the bottom of the rack is fixedly connected to the top of the guide sub-plate, the gear and the rack are meshed with each other, a sliding groove is opened on the ventilation duct, the inner wall of the sliding groove is slidably connected with the dustproof plate and the guide sub-plate, and motor 1 is started to drive the gear to rotate, and the rack is meshed with each other to move the rack, thereby driving the guide sub-plate and the dustproof plate to move, so that the dustproof plate enters the inside of the ventilation duct from the outside of the ventilation duct, and the ventilation duct is closed by the dustproof plate, thereby ensuring that dust generated during cleaning will not enter the inside of the machine.

[0010] Preferably, a cleaning structure is provided on the back plate, and the cleaning structure includes motor 2, the output end of motor 2 is fixedly connected with a screw rod, the outer wall of the screw rod is threadedly connected with a movable sleeve, and the back plate is fixedly connected with a guide slide rod, the inner wall of the movable sleeve is slidably connected to the outer wall of the guide slide rod, the screw rod is driven to rotate by motor 2, and then the movable sleeve is driven to move on the screw rod, and the movable sleeve is guided by the guide slide rod.

[0011] Preferably, the bottom of the movable sleeve is fixedly connected to a placement seat, the inner wall of the placement seat is fixedly connected to a motor three, the output end of the motor three is fixedly connected to a quick-release seat, the quick-release seat is detachably connected to a cleaning brush, and the cleaning brush is provided with cleaning bristles. The quick-release seat and the cleaning brush are driven by motor three to rotate, thereby cleaning the dust on the filter plate, which can avoid clogging of the filter plate and causing a decrease in heat dissipation efficiency, thereby ensuring that the heat dissipation structure of the device can exert a stable heat dissipation efficiency.

[0012] Preferably, the quick-release seat is provided with a receiving groove, the inner wall of the receiving groove is slidably connected to the limit head, the receiving groove and the limit head are elastically connected by a compression spring, the quick-release seat is provided with an active curved groove, the inner wall of the active curved groove is slidably connected to a connecting curved rod, one end of the connecting curved rod is fixedly connected to a pull plate, the other end of the connecting curved rod is fixedly connected to the outer wall of the limit head, and the outer wall of the quick-release seat is fixedly connected to a guide block, and the connecting curved rod is driven to move on the active curved groove by moving the pull plate, thereby driving the limit head to slide in the receiving groove, and the pull plate is released, and the limit head can be automatically reset by the compression spring, and the pull plate can also be reset in cooperation with the connecting curved rod.

[0013] Preferably, a plug-in slot is provided on the top of the cleaning brush, a guide slot is provided on the plug-in slot, a limit through hole is provided on the cleaning brush, the guide block can slide into the guide slot, the quick release seat can be plugged into the plug-in slot, the limit head can slide into the limit through hole, and the cleaning brush is guided by the guide block to ensure that the limit head can accurately slide into the limit through hole.

[0014] Preferably, a dust cover is fixedly connected to the outer wall of the back panel, an indicator light is fixedly connected to the inner wall of the back panel, a fixed plate is fixedly connected to the outer wall of the back panel, an avoidance groove is opened on the ventilation duct, an electric door is arranged at the avoidance groove, and dust is prevented for the second motor, the screw rod, the movable sleeve, the guide slide rod and the placement seat through the dust cover, and two groups of indicator lights are arranged, the normal state is green light, and the abnormal state is red light.

[0015] Preferably, a block is fixedly connected to the inner wall of the ventilation duct, and a plug-in rod is fixedly connected to the outer wall of the block. The block and the plug-in rod form a group, and two groups are provided in total.

[0016] Preferably, a filter plate is plugged into the outer wall of the plug-in rod, a guide frame is fixedly connected to the bottom of the ventilation duct, and a plug-in hole is provided on the filter plate to facilitate plugging into the plug-in rod.

[0017] Preferably, the inner wall of the guide frame is slidably connected to a guide rod, one end of the guide rod is fixedly connected to a pull block, the other end of the guide rod is fixedly connected to a movable plate, a movable groove is opened on the ventilation duct, the inner wall of the movable groove is slidably connected to the movable plate, the pull block and the guide frame are elastically connected by a reset spring, and the guide rod is driven to slide on the guide frame by pulling the pull block, thereby driving the movable plate to move in the movable groove, so that the movable plate moves downward, which is convenient for releasing the limiting state of the filter plate and facilitating the disassembly and assembly of the filter plate.

[0018] The present invention provides a heat dissipation structure of an optical fiber amplifier, which has the following beneficial effects:

[0019] (1) The heat dissipation structure of the optical fiber amplifier can perform heat dissipation through a heat dissipation fan to ensure that the device maintains a stable operating temperature during operation. At the same time, when the device is cleaning the filter plate, the dustproof plate can close the ventilation duct during cleaning to prevent dust from entering the machine, further enhancing the dustproof effect, reducing the impact of dust on internal components, and extending the service life of the equipment.

[0020] (2) When the filter plate of the heat dissipation structure of the optical fiber amplifier is clogged, the cleaning structure can clean it. Motor 2 drives the movable sleeve to move, and motor 3 drives the quick-release seat and the cleaning brush to rotate to clean the dust on the filter plate, thereby avoiding the decrease in heat dissipation efficiency caused by the clogging of the filter plate, thereby ensuring that the heat dissipation structure can exert a stable heat dissipation efficiency.

[0021] (3) The heat dissipation structure of the optical fiber amplifier is conveniently designed for component maintenance and replacement. The cleaning brush is detachably connected to the quick-release seat and can be quickly disassembled by moving the pull plate, making it convenient to replace the cleaning brush. When replacing the filter plate, the pull block can be pulled to release the limit on the filter plate. After replacement, the pull block is released, and the movable plate is reset by the reset spring to limit the filter plate, thereby quickly completing the installation of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 The overall three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the back plate of the present invention;

[0026] Figure 4 It is a schematic cross-sectional structure diagram of the placement plate and the ventilation duct part of the present invention;

[0027] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the filter plate and the dustproof plate of the present invention;

[0028] Figure 6 The present invention is a partial cross-sectional structure schematic diagram Figure 5 A is an enlarged schematic diagram;

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of the guide slide bar and the fixing plate of the present invention;

[0030] Figure 8 The present invention is a partial cross-sectional structure schematic diagram Figure 7 A magnified schematic diagram of B;

[0031] Fig. 9 This is a schematic diagram of the exploded cross-sectional structure of the cleaning brush and the quick-release seat of the present invention;

[0032] Fig.10 The present invention is a partial cross-sectional structure schematic diagram Fig. 9 A magnified schematic diagram of middle C;

[0033] Fig.11 It is a schematic diagram of the cross-sectional structure of the plug-in rod and the movable plate of the present invention;

[0034] Fig.12 The present invention is a partial cross-sectional structure schematic diagram Fig.11 A magnified schematic diagram of D in the middle.

[0035] Description of the accompanying drawings: 1. Main plate; 2. Shell; 3. Back plate; 4. Ventilation duct; 5. Heat dissipation structure; 51. Placement plate; 52. Cooling fan; 53. Mounting ring; 54. Motor 1; 55. Gear; 56. Rack; 57. Dust plate; 58. Guide sub-plate; 6. Cleaning structure; 61. Motor 2; 62. Screw rod; 63. Movable sleeve; 64. Guide slide rod; 65. Placement seat; 66. Motor 3; 67. Quick release seat; 671 , limit head; 672, compression spring; 673, movable curved groove; 674, connecting curved rod; 675, pull plate; 676, guide block; 68, cleaning brush; 681, plug-in slot; 682, guide slot; 683, limit through hole; 7, dust cover; 8, indicator light; 9, fixed plate; 10, block; 11, plug-in rod; 12, filter plate; 13, guide frame; 14, guide rod; 15, pull block; 16, movable plate; 17, electric door.

[0036] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 12 The present invention proposes a heat dissipation structure of an optical fiber amplifier, including a front plate 1, a shell 2, and a back plate 3. A ventilation duct 4 is arranged on the back plate 3, and a heat dissipation structure 5 is arranged on the ventilation duct 4. The heat dissipation structure 5 includes a placement plate 51. The inner wall of the shell 2 is fixedly connected with the placement plate 51, and the top of the placement plate 51 is fixedly connected with a heat dissipation fan 52. The outer wall of the ventilation duct 4 is fixedly connected with a mounting ring 53, and the inner wall of the mounting ring 53 is fixedly connected with a motor 54. The output end of the motor 54 is fixedly connected with a gear 55, and a rack 56 is arranged below the gear 55.

[0039] In an embodiment of the present invention, a dustproof plate 57 is slidably connected to the inner wall of the ventilation duct 4, a guide sub-plate 58 is fixedly connected to the outer wall of the dustproof plate 57, the bottom of the rack 56 is fixedly connected to the top of the guide sub-plate 58, the gear 55 and the rack 56 are meshed with each other, a sliding groove is provided on the ventilation duct 4, and the inner wall of the sliding groove is slidably connected to the dustproof plate 57 and the guide sub-plate 58, the motor 54 is started to drive the gear 55 to rotate, and the rack 56 is meshed with each other to move, thereby driving the guide sub-plate 58 and the dustproof plate 57 to move, so that the dustproof plate 57 enters the inside of the ventilation duct 4 from the outside of the ventilation duct 4, and the ventilation duct 4 is sealed by the dustproof plate 57, thereby ensuring that the dust generated during cleaning will not enter the inside of the machine.

[0040] Furthermore, a cleaning structure 6 is provided on the back plate 3, and the cleaning structure 6 includes a second motor 61, and a screw rod 62 is fixedly connected to the output end of the second motor 61, and a movable sleeve 63 is threadedly connected to the outer wall of the screw rod 62, and a guide slide rod 64 is fixedly connected to the back plate 3, and the inner wall of the movable sleeve 63 is slidably connected to the outer wall of the guide slide rod 64, and the screw rod 62 is driven to rotate by the second motor 61, and then the movable sleeve 63 is driven to move on the screw rod 62, and the movable sleeve 63 is guided by the guide slide rod 64, and the movable sleeve 63 A placement seat 65 is fixedly connected to the bottom, a motor three 66 is fixedly connected to the inner wall of the placement seat 65, a quick-release seat 67 is fixedly connected to the output end of the motor three 66, a cleaning brush 68 is detachably connected to the quick-release seat 67, and the cleaning brush 68 is provided with cleaning bristles. The quick-release seat 67 and the cleaning brush 68 are driven by the motor three 66 to rotate, thereby cleaning the dust on the filter plate 12, thereby avoiding clogging of the filter plate 12 and causing a decrease in heat dissipation efficiency, thereby ensuring that the heat dissipation structure 5 of the device can exert a stable heat dissipation efficiency.

[0041] Furthermore, a storage groove is provided on the quick release seat 67, and the inner wall of the storage groove is slidably connected to the limit head 671. The storage groove and the limit head 671 are elastically connected by a compression spring 672. An active curved groove 673 is provided on the quick release seat 67, and the inner wall of the active curved groove 673 is slidably connected to a connecting curved rod 674, one end of the connecting curved rod 674 is fixedly connected to a pull plate 675, and the other end of the connecting curved rod 674 is fixedly connected to the outer wall of the limit head 671. The outer wall of the quick release seat 67 is fixedly connected to a guide block 676. By moving the pull plate 675, the connecting curved rod 674 is driven to move on the active curved groove 673, thereby driving the limit head 671 in the storage. The groove is slid to release the pull plate 675. The limit head 671 can be automatically reset by compressing the spring 672. The pull plate 675 can also be reset by cooperating with the connecting bent rod 674. A plug-in groove 681 is provided on the top of the cleaning brush 68. A guide groove 682 is provided on the plug-in groove 681. A limit through hole 683 is provided on the cleaning brush 68. The guide block 676 can slide into the guide groove 682. The quick release seat 67 can be inserted into the plug-in groove 681. The limit head 671 can slide into the limit through hole 683. The cleaning brush 68 is guided by the guide block 676 to ensure that the limit head 671 can accurately slide into the limit through hole 683.

[0042] Furthermore, a dust cover 7 is fixedly connected to the outer wall of the back plate 3, an indicator light 8 is fixedly connected to the inner wall of the back plate 3, a fixed plate 9 is fixedly connected to the outer wall of the back plate 3, an avoidance groove is opened on the ventilation duct 4, an electric door 17 is arranged at the avoidance groove, and dust prevention work is performed on the motor 2 61, the screw rod 62, the movable sleeve 63, the guide slide rod 64, and the placement seat 65 through the dust cover 7, the indicator light 8 is provided with two groups, the normal state is green light, and the abnormal state is red light, the inner wall of the ventilation duct 4 is fixedly connected to the block 10, the outer wall of the block 10 is fixedly connected to the plug rod 11, the block 10 and the plug rod 11 are a group, and a total of two groups are provided, and two groups of electric doors 17 are provided. The outer wall of the plug rod 11 is plugged with a filter plate 12, and the ventilation duct 4 is provided with a plurality of electric doors. A guide frame 13 is fixedly connected to the bottom of the air duct 4, and a plug-in hole is provided on the filter plate 12 for convenient plugging into the plug-in rod 11. A guide rod 14 is slidably connected to the inner wall of the guide frame 13, and a pull block 15 is fixedly connected to one end of the guide rod 14, and a movable plate 16 is fixedly connected to the other end of the guide rod 14. A movable groove is provided on the ventilation duct 4, and a movable plate 16 is slidably connected to the inner wall of the movable groove. The pull block 15 is elastically connected to the guide frame 13 through a reset spring. By pulling the pull block 15, the guide rod 14 is driven to slide on the guide frame 13, and then the movable plate 16 is driven to move in the movable groove, so that the movable plate 16 moves downward, which is convenient for releasing the limit state of the filter plate 12 and facilitating the disassembly and assembly of the filter plate 12.

[0043] In the present invention, when in use, the motor 54 is started to drive the gear 55 to rotate, and the gear 55 and the rack 56 are meshed with each other, so that the rack 56 moves, and then the guide sub-plate 58 and the dustproof plate 57 are driven to move, so that the dustproof plate 57 leaves the interior of the ventilation duct 4, and the heat dissipation work is performed by the heat dissipation fan 52;

[0044] After the device has been working for a certain period of time, the filter plate 12 in the ventilation duct 4 is prone to blockage. At this time, we can clean the filter plate 12. We first start the motor 1 54 to make the gear 55 rotate in the opposite direction, which will reset the rack 56 and then drive the guide sub-plate 58 and the dustproof plate 57 to reset, so that the dustproof plate 57 can seal the ventilation duct 4 to prevent dust from entering the interior of the machine. After confirming that the ventilation duct 4 is closed, start the motor 2 61 to drive the screw rod 62 to rotate, and then drive the movable sleeve 63 to rotate on the screw rod. 62, the placement seat 65 is moved by the movement of the movable sleeve 63, and at the same time, we start the motor 3 66, and the quick-release seat 67 and the cleaning brush 68 are driven to rotate by the motor 3 66, so as to clean the dust on the filter plate 12. At the same time, we start the electric door 17 to facilitate the cleaning brush 68 to move to the outside of the ventilation duct 4 and stop at the fixed plate 9. At this time, the cleaning hair on the cleaning brush 68 will be squeezed by the fixed plate 9 to make the dust on the cleaning hair fall off, so as to ensure the cleaning effect of the subsequent cleaning brush 68 when working;

[0045] By moving the pull plate 675, the connecting curved rod 674 is driven to move on the movable curved groove 673, thereby driving the limit head 671 to slide in the storage groove, and quickly making the limit head 671 leave the limit through hole 683, thereby completing the disassembly work of the cleaning brush 68 and the quick-release seat 67, and facilitating the replacement work. The cleaning brush 68 is guided by the guide block 676 to ensure that the limit head 671 can accurately slide into the limit through hole 683, and the pull plate 675 is released, and the limit head 671 can be automatically reset by compressing the spring 672;

[0046] When the filter plate 12 needs to be replaced, pull the pull block 15 to drive the guide rod 14 and the movable plate 16 to move, release the limit on the filter plate 12, then remove the filter plate 12 from the plug-in rod 11 for replacement, and then plug the new filter plate 12 into the plug-in rod 11 through the plug-in hole, release the pull block 15, reset the movable plate 16 by the reset spring, limit the filter plate 12, and quickly complete the installation of the filter plate 12.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A heat dissipation structure of an optical fiber amplifier, comprising a front plate (1), a housing (2), and a back plate (3), characterized in that: The back plate (3) is provided with a ventilation duct (4), the ventilation duct (4) is provided with a heat dissipation structure (5), and the heat dissipation structure (5) comprises: A placement plate (51), the inner wall of the housing (2) being fixedly connected with the placement plate (51), and the top of the placement plate (51) being fixedly connected with a cooling fan (52); A mounting ring (53), the outer wall of the ventilation duct (4) being fixedly connected with the mounting ring (53), and the inner wall of the mounting ring (53) being fixedly connected with a motor 1 (54); A gear (55), the output end of the motor 1 (54) is fixedly connected with the gear (55), and a rack (56) is arranged below the gear (55).

2. The heat dissipation structure of an optical fiber amplifier according to claim 1, characterized in that: The inner wall of the ventilation duct (4) is slidably connected to a dustproof plate (57), the outer wall of the dustproof plate (57) is fixedly connected to a guide sub-plate (58), the bottom of the rack (56) is fixedly connected to the top of the guide sub-plate (58), and the gear (55) and the rack (56) are meshed with each other.

3. The heat dissipation structure of an optical fiber amplifier according to claim 1, characterized in that: The back plate (3) is provided with a cleaning structure (6), the cleaning structure (6) comprises a second motor (61), the output end of the second motor (61) is fixedly connected with a screw rod (62), the outer wall of the screw rod (62) is threadedly connected with a movable sleeve (63), the back plate (3) is fixedly connected with a guide slide rod (64), and the inner wall of the movable sleeve (63) is slidably connected to the outer wall of the guide slide rod (64).

4. The heat dissipation structure of an optical fiber amplifier according to claim 3, characterized in that: The bottom of the movable sleeve (63) is fixedly connected to a placement seat (65), the inner wall of the placement seat (65) is fixedly connected to a motor three (66), the output end of the motor three (66) is fixedly connected to a quick-release seat (67), and a cleaning brush (68) is detachably connected to the quick-release seat (67).

5. The heat dissipation structure of an optical fiber amplifier according to claim 4, characterized in that: The quick release seat (67) is provided with a receiving groove, the inner wall of which is slidably connected to a limiting head (671), the receiving groove and the limiting head (671) are elastically connected via a compression spring (672), the quick release seat (67) is provided with an active curved groove (673), the inner wall of which is slidably connected to a connecting curved rod (674), one end of which is fixedly connected to a pull plate (675), the other end of which is fixedly connected to an outer wall of the limiting head (671), and the outer wall of the quick release seat (67) is fixedly connected to a guide block (676).

6. The heat dissipation structure of an optical fiber amplifier according to claim 4, characterized in that: The top of the cleaning brush (68) is provided with an insertion groove (681), the insertion groove (681) is provided with a guide groove (682), and the cleaning brush (68) is provided with a limiting through hole (683).

7. The heat dissipation structure of an optical fiber amplifier according to claim 1, characterized in that: The outer wall of the back plate (3) is fixedly connected to a dust cover (7), the inner wall of the back plate (3) is fixedly connected to an indicator light (8), the outer wall of the back plate (3) is fixedly connected to a fixing plate (9), and an escape groove is provided on the ventilation duct (4), and an electric door (17) is arranged at the escape groove.

8. The heat dissipation structure of an optical fiber amplifier according to claim 1, characterized in that: A stopper (10) is fixedly connected to the inner wall of the ventilation duct (4), and a plug-in rod (11) is fixedly connected to the outer wall of the stopper (10).

9. The heat dissipation structure of an optical fiber amplifier according to claim 8, characterized in that: A filter plate (12) is inserted into the outer wall of the plug-in rod (11), and a guide frame (13) is fixedly connected to the bottom of the ventilation duct (4).

10. The heat dissipation structure of an optical fiber amplifier according to claim 9, characterized in that: The inner wall of the guide frame (13) is slidably connected to a guide rod (14), one end of the guide rod (14) is fixedly connected to a pull block (15), and the other end of the guide rod (14) is fixedly connected to a movable plate (16).