High-temperature-resistant label intelligent image recognition device

Abstract

The invention discloses a high-temperature-resistant label intelligent image recognition device, and relates to the technical field of steel ladle recognition, the high-temperature-resistant label intelligent image recognition device comprises a steel ladle mechanism and an adjusting support mechanism, the steel ladle mechanism is located on the rear side of the adjusting support mechanism, a recognition device protection box is arranged on the rear side of the adjusting support mechanism, and the recognition device protection box is located on the front side of the steel ladle mechanism; the steel ladle mechanism comprises a steel ladle body, hoisting rings are fixedly installed on the upper portions of the left side and the right side of the steel ladle body, a plurality of square grooves are formed in the front side of the steel ladle body in a rectangular array mode, a high-temperature-resistant two-dimensional code template is fixedly installed on the inner side of one of the square grooves, and the adjusting support mechanism comprises a base plate. Through mutual cooperation of the high-temperature-resistant two-dimensional code template, the recognition device protection box and the adjusting support mechanism, the height of the infrared thermal imager can be conveniently adjusted according to the height of the high-temperature-resistant two-dimensional code template or the steel ladle, the high-temperature-resistant two-dimensional code template can be irradiated by the high-temperature-resistant two-dimensional code template all the time, and the applicability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ladle identification, and particularly to an intelligent image recognition device for high-temperature resistant labels. Background Art

[0002] The transportation of high-temperature liquids is usually carried out by ladles, torpedo cars, and hot metal ladles. Among them, ladles are used in steel mills and foundries to receive molten steel in front of open-hearth furnaces, electric furnaces, or converters and carry out pouring operations. Since the temperature of the molten steel inside the ladle is as high as 1600 - 1700 degrees Celsius and the external temperature is also several hundred degrees, its safe transportation is very important. Therefore, identifying the ladle and accurately grasping the position information of the ladle is an important part of the entire production process. The following problems exist in the prior art:

[0003] Because the existing ladle identification mainly relies on thermal imaging identification, visual camera identification, or high-temperature resistant electronic tag identification. However, thermal imaging identification has a high cost and is as afraid of molten steel splashing as visual camera identification. Once the lens of visual camera identification is dirty or there is light interference, it will affect stable identification. Although the last type of high-temperature resistant electronic tag identification has a relatively high-temperature resistant tag body, the high-temperature resistance performance of the identification device cannot be guaranteed, thus affecting its service life. Summary of the Invention

[0004] The present invention provides an intelligent image recognition device for high-temperature resistant labels to solve the problems mentioned in the above background art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An intelligent image recognition device for high-temperature resistant labels, including a ladle mechanism and an adjustment support mechanism. The ladle mechanism is located at the rear side of the adjustment support mechanism. A recognition device protection box is arranged at the rear side of the adjustment support mechanism, and the recognition device protection box is located at the front side of the ladle mechanism. The ladle mechanism includes a ladle body. Hoisting rings are fixedly installed above the left and right sides of the ladle body. A plurality of square grooves are arranged in a rectangular array on the front side of the ladle body. A high-temperature resistant two-dimensional code template is fixedly installed inside one of the plurality of square grooves. The adjustment support mechanism includes a base plate. Four self-locking universal wheels are fixedly installed in a rectangular array at the bottom of the base plate. A support square frame is fixedly installed on the top of the base plate. A servo motor is fixedly installed on the top of the support square frame. The output shaft of the servo motor penetrates to the inside of the support square frame and is fixedly installed with a threaded rod. A lifting plate is threadedly installed on the outer wall of the threaded rod. The left and right sides of the lifting plate are respectively lapped with the left and right inner walls of the support square frame. A sliding rod is fixedly installed between the upper and lower inner walls of the support square frame. The lifting plate is slidably connected with the sliding rod. The rear end of the lifting plate is fixedly connected to the lower front side of the recognition device protection box.

[0007] A further improvement of the technical solution of the present invention lies in that: a lens square box is fixedly installed on the front side of the protection box of the recognition device, a through hole penetrating its inner cavity is opened on the front side of the protection box of the recognition device, and the through hole is located inside the lens square box.

[0008] A further improvement of the technical solution of the present invention lies in that: a jack penetrating its inner cavity is opened on the top of the lens square box, a slot is opened on the rear side of the inner wall bottom of the lens square box, the slot is vertically aligned with the jack, a tempered glass plate is slidably installed inside the jack, and a lifting handle is fixedly installed on the top of the tempered glass plate.

[0009] A further improvement of the technical solution of the present invention lies in that: a placement bottom plate is fixedly installed on the bottom of the inner cavity of the protection box of the recognition device, an infrared thermal imager is arranged on the top of the placement bottom plate, and the irradiation end at the rear end of the infrared thermal imager is vertically aligned with the through hole.

[0010] A further improvement of the technical solution of the present invention lies in that: an insertion box is fixedly installed on the front side of the top of the protection box of the recognition device, a cover plate slot is opened on the rear side of the insertion box, a disassembly cover is arranged on the top of the protection box of the recognition device, the front end of the disassembly cover is clamped with the cover plate slot, a handle is fixedly installed on the rear side of the disassembly cover, and an air inlet filter screen is fixedly installed inside the disassembly cover.

[0011] A further improvement of the technical solution of the present invention lies in that: a chute is opened on the top of the placement bottom plate, a limiting plate is fixedly installed on the rear side of the top of the placement bottom plate, the front side of the limiting plate abuts against the rear side of the infrared thermal imager, a positive and reverse threaded rod is movably installed on the left side inner wall of the chute, and the right end of the positive and reverse threaded rod penetrates to the right side of the protection box of the recognition device and is fixedly installed with a rotary handle.

[0012] A further improvement of the technical solution of the present invention lies in that: thread walls with opposite threads are respectively opened on the left and right sides of the outer wall of the positive and reverse threaded rod, and moving blocks are threadedly installed on the outer walls of both thread walls. Clamping plates are fixedly installed on the tops of the two moving blocks, and the opposite surfaces of the two clamping plates respectively abut against the left and right sides of the infrared thermal imager.

[0013] A further improvement of the technical solution of the present invention lies in that: internally threaded heat dissipation tubes penetrating its inner cavity are respectively fixedly installed on the left and right sides of the protection box of the recognition device. An external thread ring is threadedly installed on the side of the inner circle of the internally threaded heat dissipation tube far from the inner cavity of the protection box of the recognition device. A protection filter screen is fixedly installed inside the inner circle of the external thread ring, and an exhaust fan is fixedly installed on the side of the inner circle of the internally threaded heat dissipation tube close to the inner cavity of the protection box of the recognition device.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present invention compared with the prior art is:

[0015] 1. The present invention provides a high-temperature resistant label intelligent image recognition device. Through the mutual cooperation among the high-temperature resistant two-dimensional code template, the protection box of the recognition device, and the adjustment bracket mechanism, it is convenient to adjust the height of the infrared thermal imager for the height of the high-temperature resistant two-dimensional code template or the ladle, so that it can always irradiate the high-temperature resistant two-dimensional code template, improving the applicability.

[0016] 2. The present invention provides a high-temperature resistant label intelligent image recognition device. Through the mutual cooperation among the lens square box, the internally threaded heat dissipation pipe, and the exhaust fan, the irradiation lens of the infrared thermal imager can be protected, and at the same time, its heat dissipation can be improved, reducing the stability of the use environment, protecting the use safety of the infrared thermal imager, and extending its service life.

[0017] 3. The present invention provides a high-temperature resistant label intelligent image recognition device. Through the mutual cooperation among the disassembly cover, the placement bottom plate, the sliding groove, the limiting plate, the positive and negative threaded rod, the rotating handle, and the clamping plate, the infrared thermal imager can be conveniently and quickly disassembled and assembled without the need for tools, improving the efficiency of disassembly, installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall schematic diagram of the structure of the present invention;

[0019] Figure 2 It is the schematic diagram of the ladle mechanism of the structure of the present invention;

[0020] Figure 3 It is the schematic diagram of the adjustment bracket mechanism of the structure of the present invention;

[0021] Figure 4 It is the schematic diagram of the lens square box of the structure of the present invention;

[0022] Figure 5 It is the schematic diagram of the open state of the disassembly cover of the structure of the present invention;

[0023] Figure 6 It is the schematic diagram of the placement bottom plate of the structure of the present invention;

[0024] Figure 7 It is the schematic diagram of the internally threaded heat dissipation pipe of the structure of the present invention.

[0025] In the figure: 1. Ladle mechanism; 11. Ladle body; 12. Lifting ring; 13. Square groove; 14. High-temperature QR code template; 2. Adjusting bracket mechanism; 21. Base plate; 22. Support square frame; 23. Self-locking universal wheel; 24. Servo motor; 25. Threaded rod; 26. Lifting plate; 27. Slide bar; 3. Identification device protection box; 31. Lens square box; 311. Jack; 312. Slot; 313. Tempered glass plate; 314. Pull handle; 32. Through hole; 33. Placing base plate; 331. Slide groove; 332. Limiting plate; 333. Positive and negative threaded rod; 334. Rotating handle; 335. Clamping plate; 34. Infrared thermal imager; 35. Insertion box; 36. Demounting cover; 361. Handle; 362. Inlet air filter screen; 37. Internal threaded heat dissipation pipe; 371. External threaded ring; 372. Protection filter screen; 373. Exhaust fan. Detailed implementation manners

[0026] The present invention will be further described in detail below in conjunction with embodiments:

[0027] Embodiment 1

[0028] As Figures 1-6 shown, the present invention provides a high-temperature label intelligent image recognition device, including a ladle mechanism 1 and an adjusting bracket mechanism 2. The ladle mechanism 1 is located at the rear side of the adjusting bracket mechanism 2. An identification device protection box 3 is arranged at the rear side of the adjusting bracket mechanism 2. The identification device protection box 3 is located at the front side of the ladle mechanism 1. The ladle mechanism 1 includes a ladle body 11. Lifting rings 12 are fixedly installed above the left and right sides of the ladle body 11. A plurality of square grooves 13 are arranged in a rectangular array on the front side of the ladle body 11. A high-temperature QR code template 14 is fixedly installed on the inner side of one of the plurality of square grooves 13. A lens square box 31 is fixedly installed on the front side of the identification device protection box 3. A through hole 32 penetrating through its inner cavity is opened on the front side of the identification device protection box 3. The through hole 32 is located inside the lens square box 31. A jack 311 penetrating through its inner cavity is opened at the top of the lens square box 31. A slot 312 is opened at the rear side of the inner wall bottom of the lens square box 31. The slot 312 is vertically aligned with the jack 311. A tempered glass plate 313 is slidably installed inside the jack 311. A pull handle 314 is fixedly installed at the top of the tempered glass plate 313. A placing base plate 33 is fixedly installed at the bottom of the inner cavity of the identification device protection box 3. An infrared thermal imager 34 is arranged on the top of the placing base plate 33. The rear irradiation end of the infrared thermal imager 34 is vertically aligned with the through hole 32.

[0029] In this embodiment, during use, the high-temperature resistant QR code template 14 is installed in the square groove 13, and the lifting ring 12 is used in cooperation with the overhead crane to move the entire ladle body 11. During identification, the infrared thermal imager 34 can identify the high-temperature resistant QR code template 14 through the through hole 32. At the same time, the tempered glass plate 313 is inserted into the slot 312 through the jack 311 to seal the lens square box 31, preventing the lens of the infrared thermal imager 34 from being contaminated. When cleaning is required, the tempered glass plate 313 can be directly pulled out upward by using the lifting handle 314. The subsequent process of the ladle body 11 after identifying the high-temperature resistant QR code template 14 is tracked by the overhead crane. At this time, the ladle age is automatically incremented by one for the reference of management personnel. When the overhead crane tracks that the ladle body 11 is going to the cold repair area, the ladle age is reset to zero and waits for the start of a new cycle.

[0030] Embodiment 2

[0031] As Figures 1-6 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, the adjusting bracket mechanism 2 includes a base plate 21. Four self-locking universal wheels 23 are fixedly installed in a rectangular array at the bottom of the base plate 21. A support square frame 22 is fixedly installed on the top of the base plate 21. A servo motor 24 is fixedly installed on the top of the support square frame 22. The output shaft of the servo motor 24 penetrates to the inside of the support square frame 22 and is fixedly installed with a threaded rod 25. A lifting plate 26 is threadedly installed on the outer wall of the threaded rod 25. The left and right sides of the lifting plate 26 are respectively lapped with the left and right inner walls of the support square frame 22. A slide rod 27 is fixedly installed between the upper and lower sides of the inner wall of the support square frame 22. The lifting plate 26 is slidably connected with the slide rod 27. The rear end of the lifting plate 26 is fixedly connected to the lower front side of the front side of the identification device protection box 3.

[0032] In this embodiment, the base plate 21 is pushed to the position where the identification device protection box 3 faces the ladle body 11 by means of the self-locking universal wheels 23 and then stopped. Then the self-locking universal wheels 23 are locked. By cooperating with starting the servo motor 24, the rotation of the threaded rod 25 can be controlled. By using the threaded connection between the lifting plate 26 and the threaded rod 25 and the sliding connection limit with the slide rod 27, the identification device protection box 3 at the rear side of the lifting plate 26 can be stably lifted and lowered up and down, facilitating the alignment of the height of the identification device protection box 3 with the high-temperature resistant QR code template 14.

[0033] Embodiment 3

[0034] As Figures 1-6As shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, a plug box 35 is fixedly installed on the front side of the top of the identification device protection box 3. A cover plate slot is opened at the rear side of the plug box 35. A disassembly cover 36 is arranged on the top of the identification device protection box 3. The front end of the disassembly cover 36 is clamped with the cover plate slot. A handle 361 is fixedly installed on the rear side of the disassembly cover 36. An air inlet filter screen 362 is fixedly installed on the inner side of the disassembly cover 36. A chute 331 is opened on the top of the placement bottom plate 33. A limiting plate 332 is fixedly installed on the rear side of the top of the placement bottom plate 33. The front side of the limiting plate 332 abuts against the rear side of the infrared thermal imager 34. A left-right threaded rod 333 is movably installed on the left inner wall of the chute 331. The right end of the left-right threaded rod 333 penetrates to the right side of the identification device protection box 3 and is fixedly installed with a rotating handle 334. Threaded walls with opposite threads are respectively opened on the left and right outer walls of the left-right threaded rod 333. And moving blocks are threadedly installed on the outer walls of both threaded walls. Clamping plates 335 are fixedly installed on the tops of the two moving blocks. The opposite surfaces of the two clamping plates 335 respectively abut against the left and right sides of the infrared thermal imager 34.

[0035] In this embodiment, when using the infrared thermal imager 34, the entire disassembly cover 36 can be slid on the top of the identification device protection box 3 and snapped into the cover plate slot opened in the plug box 35. The air inlet filter screen 362 is used to provide air inlet. The entire infrared thermal imager 34 can be directly placed on the rear side of the top of the placement bottom plate 33 and abutted against the limiting plate 332 backward. Then, rotating the rotating handle 334 can drive the left-right threaded rod 333 in the chute 331 to rotate. By using the threaded connection between the threaded walls with opposite threads on the left and right outer walls of the left-right threaded rod 333 and the moving blocks, the two clamping plates 335 can be controlled to move closer to each other to clamp and fix the infrared thermal imager 34. On the contrary, reversing the rotating handle 334 can quickly disassemble the infrared thermal imager 34. The maintenance work of the infrared thermal imager 34 can be conveniently and quickly carried out by pulling and opening the entire disassembly cover 36.

[0036] Embodiment 4

[0037] As Figures 1-6 shown, on the basis of Embodiment 1, the present invention provides a technical solution: Preferably, inner threaded heat dissipation tubes 37 penetrating through its inner cavity are respectively fixedly installed on the left and right sides of the identification device protection box 3. An external thread ring 371 is threadedly installed on the side of the inner circle of the inner threaded heat dissipation tube 37 far from the inner cavity of the identification device protection box 3. A protection filter screen 372 is fixedly installed on the inner circle of the external thread ring 371. An exhaust fan 373 is fixedly installed on the side of the inner circle of the inner threaded heat dissipation tube 37 close to the inner cavity of the identification device protection box 3.

[0038] In this embodiment, since the recognition environment of the ladle body 11 is relatively hot, in order to prevent damage to the internal electronic components of the infrared thermal imager 34, the temperature in the inner cavity of the recognition device protection box 3 can be taken away by the high-speed rotation of the exhaust fans 373 in the two internal thread heat dissipation tubes 37. At the same time, the exhaust fans 373 can be exposed by rotating and disassembling the external thread ring 371 for convenient maintenance. The protection filter screen 372 can also protect the exhaust fans 373 to prevent foreign objects from entering the inner cavity of the recognition device protection box 3 or accidentally touching the exhaust fans 373.

[0039] The working principle of the high-temperature resistant label intelligent image recognition device will be specifically described below.

[0040] As Figures 1-6As shown in the figure, during use, the high-temperature resistant QR code template 14 is installed in the square groove 13, and the lifting ring 12 is used in cooperation with the overhead crane to move the entire ladle body 11. The base plate 21 is advanced to the position facing the ladle body 11 of the identification device protection box 3 by means of the self-locking universal wheels 23 and then stopped. The self-locking universal wheels 23 are locked. By cooperating with the start of the servo motor 24, the rotation of the threaded rod 25 can be controlled. By utilizing the threaded connection between the lifting plate 26 and the threaded rod 25 and the sliding connection limit with the sliding rod 27, the identification device protection box 3 behind the lifting plate 26 can be stably lifted up and down, facilitating the alignment of the height of the identification device protection box 3 with the high-temperature resistant QR code template 14. During identification, the infrared thermal imager 34 can identify the high-temperature resistant QR code template 14 through the through hole 32. At the same time, the tempered glass plate 313 is inserted into the slot 312 through the jack 311 to seal the lens box 31, preventing the lens of the infrared thermal imager 34 from being contaminated. When cleaning is required, the tempered glass plate 313 can be directly pulled out upward by using the lifting handle 314. Through the overhead crane positioning and tracking, the subsequent process of the ladle body 11 after identifying the high-temperature resistant QR code template 14 is carried out. At this time, the ladle age is automatically incremented by one for the reference of management personnel. When the overhead crane tracks the ladle body 11 going to the cold repair area, the ladle age is reset to zero and waits for the start of a new cycle. When using the infrared thermal imager 34, the entire disassembly cover 36 can be slid into the cover slot opened in the cartridge 35 on the top of the identification device protection box 3. The air inlet filter 362 provides air inlet. The entire infrared thermal imager 34 can be directly placed on the rear side of the top of the placement base plate 33 and abutted against the limit plate 332 backward. Then, by rotating the rotating handle 334, the forward and reverse threaded rod 333 in the chute 331 can be rotated. By utilizing the threaded connection between the threaded walls on the left and right sides of the outer wall of the forward and reverse threaded rod 333 and the moving block, the two clamping plates 335 can be controlled to move closer to each other to clamp and fix the infrared thermal imager 34. Conversely, by reversing the rotating handle 334, the infrared thermal imager 34 can be quickly disassembled. The maintenance work of the infrared thermal imager 34 can be conveniently and quickly carried out through the pulling and opening of the entire disassembly cover 36. Since the identification environment of the ladle body 11 is relatively hot, in order to avoid damage to the internal electronic components of the infrared thermal imager 34, the temperature in the inner cavity of the identification device protection box 3 can be taken away by the high-speed rotation of the exhaust fans 373 in the two internal threaded heat dissipation pipes 37. At the same time, the exhaust fan 373 can be exposed by rotating the detachable external threaded ring 371, facilitating maintenance. The protective filter screen 372 can also protect the exhaust fan 373 to prevent foreign objects from entering the inner cavity of the identification device protection box 3 or accidentally touching the exhaust fan 373.

[0041] The present invention has been generally and exhaustively described above. However, based on the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high temperature resistant label intelligent image recognition device, comprising a ladle mechanism (1) and an adjustment bracket mechanism (2), characterized in that: The ladle mechanism (1) is located at the rear side of the adjusting support mechanism (2), and an identification device protection box (3) is arranged at the rear side of the adjusting support mechanism (2). The identification device protection box (3) is located at the front side of the ladle mechanism (1). The ladle mechanism (1) comprises a ladle body (11), and a lifting ring (12) is fixedly installed on the upper left and right sides of the ladle body (11). A plurality of square grooves (13) are opened in a rectangular array on the front side of the ladle body (11), and a high-temperature resistant two-dimensional code template (14) is fixedly installed on the inner side of one of the plurality of square grooves (13). The adjusting support mechanism (2) comprises a base plate (21), and four self-locking universal wheels are fixedly installed in a rectangular array at the bottom of the base plate (21). (23), a support frame (22) is fixedly installed on the top of the base plate (21), a servo motor (24) is fixedly installed on the top of the support frame (22), the output shaft of the servo motor (24) passes through the inner side of the support frame (22) and is fixedly installed with a threaded rod (25), the outer wall of the threaded rod (25) is threadedly installed with a lifting plate (26), the left and right sides of the lifting plate (26) are respectively overlapped with the left and right sides of the inner wall of the support frame (22), a sliding rod (27) is fixedly installed between the upper and lower sides of the inner wall of the support frame (22), the lifting plate (26) is slidably connected to the sliding rod (27), and the rear end of the lifting plate (26) is fixedly connected to the front lower side of the identification device protection box (3).

2. The high temperature resistant label intelligent image recognition device according to claim 1, characterized in that: A lens square box (31) is fixedly mounted on the front side of the identification device protection box (3), and a through hole (32) penetrating the inner cavity of the identification device protection box (3) is provided on the front side of the identification device protection box (3), wherein the through hole (32) is located on the inner side of the lens square box (31).

3. The high temperature resistant label intelligent image recognition device according to claim 2, characterized in that: The top of the lens square box (31) is provided with a plug hole (311) penetrating the inner cavity thereof, the bottom rear side of the inner wall of the lens square box (31) is provided with a slot (312), the slot (312) is vertically aligned with the plug hole (311), a tempered glass plate (313) is slidably mounted on the inner side of the plug hole (311), and a lifting handle (314) is fixedly mounted on the top of the tempered glass plate (313).

4. The high temperature resistant label intelligent image recognition device according to claim 1, characterized in that: A placement base plate (33) is fixedly mounted on the bottom of the inner cavity of the identification device protection box (3), an infrared thermal imager (34) is arranged on the top of the placement base plate (33), and a rear irradiation end of the infrared thermal imager (34) is aligned front and rear with the through hole (32).

5. The high temperature resistant label intelligent image recognition device according to claim 1, characterized in that: An insertion box (35) is fixedly installed on the front side of the top of the identification device protection box (3), a cover slot is provided on the rear side of the insertion box (35), a disassembly cover (36) is provided on the top of the identification device protection box (3), a front end of the disassembly cover (36) is snap-connected with the cover slot, a handle (361) is fixedly installed on the rear side of the disassembly cover (36), and an air inlet filter (362) is fixedly installed on the inner side of the disassembly cover (36).

6. The high temperature resistant label intelligent image recognition device according to claim 4, characterized in that: A slide groove (331) is provided on the top of the placement base plate (33), a limit plate (332) is fixedly installed on the rear side of the top of the placement base plate (33), the front side of the limit plate (332) overlaps the rear side of the infrared thermal imager (34), a positive and negative threaded rod (333) is movably installed on the left side of the inner wall of the slide groove (331), the right end of the positive and negative threaded rod (333) passes through the right side of the identification device protection box (3) and is fixedly installed with a rotating handle (334).

7. The high temperature resistant label intelligent image recognition device according to claim 6, characterized in that: Threaded walls with opposite threads are respectively provided on the left and right sides of the outer wall of the positive and negative threaded rod (333), and movable blocks are threadedly mounted on the outer walls of the two threaded walls. Clamps (335) are fixedly mounted on the tops of the two movable blocks, and the opposite surfaces of the two clamps (335) are respectively overlapped with the left and right sides of the infrared thermal imager (34).

8. The high temperature resistant label intelligent image recognition device according to claim 1, characterized in that: Internally threaded heat dissipation pipes (37) penetrating the inner cavity of the identification device protection box (3) are respectively fixedly mounted on the left and right sides thereof; an externally threaded ring (371) is threadedly mounted on the inner circle of the internally threaded heat dissipation pipe (37) at a side away from the inner cavity of the identification device protection box (3); a protective filter (372) is fixedly mounted on the inner circle of the externally threaded ring (371); and an exhaust fan (373) is fixedly mounted on the inner circle of the internally threaded heat dissipation pipe (37) at a side close to the inner cavity of the identification device protection box (3).

Images