Electromagnetic shielding cabinet

Abstract

The invention belongs to the technical field of shielding cabinets, and particularly relates to an electromagnetic shielding cabinet which comprises a shielding cabinet body, an aluminum frame is arranged on the shielding cabinet body, a sealing door corresponding to a door frame is connected to the front face of the shielding cabinet body through hinges, and a sealing assembly is arranged on the sealing door. The shielding cabinet body is internally provided with a limiting mechanism for limiting a circuit, a square groove and an adjusting mechanism for adjusting the position of the square groove. According to the electromagnetic shielding cabinet, accumulated heat can be dissipated through the arranged square groove and an exhaust fan, the heat dissipation efficiency is improved, the exhaust fan works to extract air in a heat exchange pipe, conveyed wind power can flow into the square groove through a telescopic hose, the square groove is hollow, and the wind power can flow to the surface of an instrument through spray holes, so that the heat dissipation efficiency is improved. And therefore, heat dissipation treatment can be carried out on the instrument, and the purpose of dissipating heat accumulated in the electromagnetic shielding cabinet is further improved.

Description

Technical Field

[0001] This invention belongs to the field of shielding cabinet technology, specifically an electromagnetic shielding cabinet. Background Technology

[0002] Electromagnetic shielding cabinets can be used to house instruments that easily emit electromagnetic waves, such as computers. They effectively prevent electromagnetic waves from harming people and suppress electromagnetic information leakage from the shielded instruments, preventing external strong electromagnetic interference from affecting their normal operation. Currently, most electromagnetic shielding cabinets on the market are assembled from dense metal plates, resulting in heavy weight and inconsistent shielding effectiveness. In particular, most current electromagnetic shielding cabinets have poor shielding performance against high-frequency electromagnetic waves. This electromagnetic shielding cabinet can be applied in industries with high confidentiality requirements, such as government agencies, banks, securities firms, the military, and scientific research institutions.

[0003] A Chinese patent with publication number CN112739109A discloses an electromagnetic shielding cabinet, including a cabinet body and a cabinet door. A fixing block is connected to the bottom of the side of the cabinet body, and the bottom surface of the cabinet door contacts the top surface of the fixing block. A connecting block is connected to the top of the side of the cabinet body, and the bottom surface of the connecting block contacts the top surface of the cabinet door. A rectangular mounting hole is provided on the top surface of the cabinet door, and a movable groove is provided on the bottom surface of the connecting block. A mating block is installed in the movable groove and is connected to the closed end of the movable groove away from the cabinet body via a spring. A mounting block mates with the mounting hole, and the top surface of the mounting block is connected to the bottom surface of the mating block. The spring is in a stretched state. A sliding groove is provided on the side of the connecting block away from the cabinet body, and the movable block is installed in the sliding groove. The top of the side of the limiting plate is connected to the movable block, and the bottom of the side of the limiting plate contacts the side of the cabinet door away from the cabinet body. This invention solves the problem of low efficiency in conventional cabinet door opening and closing.

[0004] Existing electromagnetic shielding cabinets are not conducive to dissipating the heat accumulated inside during use. The shielded instruments will generate a lot of heat during long-term operation. If heat dissipation is not carried out in a timely and effective manner, the internal temperature will rise. Being in a high-temperature environment for a long time may accelerate the aging of the equipment, affect its service life, affect the performance stability of the instrument, and even cause safety hazards.

[0005] Therefore, the present invention provides an electromagnetic shielding cabinet. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and solve the problem of easily dissipating accumulated heat, this invention proposes an electromagnetic shielding cabinet.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: An electromagnetic shielding cabinet of the present invention includes a shielding cabinet body, an aluminum frame provided on the shielding cabinet body, a door frame fixedly installed inside the shielding cabinet body, a sealing door corresponding to the door frame connected to the front of the shielding cabinet body by a hinge, a sealing component provided on the sealing door, a limiting mechanism for limiting the line inside the shielding cabinet body, a square slot inside the shielding cabinet body, an adjusting mechanism for adjusting the position of the square slot inside the shielding cabinet body, spray holes arrayed on the square slot, a frame provided on the top of the shielding cabinet body, a heat exchange mechanism for heat conversion inside the frame, and an exhaust mechanism inside the frame, with the output end of the exhaust mechanism connected to the square slot.

[0008] By adopting the above solution, the computer is placed inside the shielded cabinet. The cabinet is sealed by a closed door, which suppresses electromagnetic information leakage from the shielding instrument and prevents external strong electromagnetic interference from affecting its normal operation. It also eliminates electromagnetic waves that could harm people. A limiting mechanism restricts the cables connected to the computer and other instruments, preventing accidental cable pulling and ensuring normal computer use. When the shielding instrument generates heat during prolonged operation, an exhaust mechanism draws air from inside the cabinet to dissipate this heat. This airflow carries heat into the heat exchange mechanism for heat exchange. The cooled air then flows through the exhaust mechanism into a square slot, where it is directed towards the interior of the cabinet and the surface of the shielded instrument through nozzles, thus dissipating heat and improving efficiency. This effectively prevents abnormal instrument temperatures, ensuring normal operation and extending the instrument's lifespan.

[0009] Preferably, the sealing assembly includes a sealing groove and a sealing sheet metal part. The sealing groove is disposed on the front of the door frame, and the sealing sheet metal part corresponding to the sealing groove is fixedly disposed on the sealing door, and the sealing sheet metal part is disposed inside the sealing groove.

[0010] By adopting the above solution, after placing the shielded instrument inside the shielding cabinet, closing the sealing door allows the sealing sheet metal parts to enter the sealing groove, which seals the gap between the sealing door and the door frame, thus improving the sealing effect.

[0011] Preferably, the limiting mechanism includes a square frame, a through groove, a sealing ring, a clamping block, and a driving assembly. The square frame is embedded inside the shielding cabinet body, the through groove is disposed on the square frame, the sealing ring is disposed around the inside of the through groove, the clamping block is disposed inside the square frame, the driving assembly for driving the clamping block to move is disposed inside the square frame, and a compression assembly is disposed inside the square frame.

[0012] By adopting the above scheme, the wires connected to the instrument can enter the interior of the shielding cabinet through the through slot. After the wires move to one side of the clamping block, the position of the clamping block can be adjusted by the movement of the drive component. After the clamping block moves and contacts the wires, it can limit the wires. Thus, during use, it can effectively prevent the wires from shaking and affecting the normal use of the shielding instrument. At the same time, the movement of the compression component will cause compressed air to flow into the sealing ring, causing the sealing ring to expand. After the sealing ring expands, it will seal the gap between the wires and the through slot, thereby improving the sealing performance.

[0013] Preferably, the drive assembly includes a power motor, an adjusting screw, a threaded cylinder, a guide block, and a guide rod. The power motor is fixedly installed inside the square frame. One end of the adjusting screw is fixedly connected to the output end of the power motor. The threaded cylinder is threadedly connected to the adjusting screw, and one end of the threaded cylinder is fixedly connected to the clamping block. The guide block is fixedly installed on the threaded cylinder. The guide rod passes through the guide block and is fixedly connected to the inner wall of the square frame.

[0014] By adopting the above scheme, the operation of the power motor will drive the adjusting screw to rotate. When the adjusting screw rotates, it will cause the threaded cylinder to move. The movement of the threaded cylinder will cause the guide block to slide on the guide rod, which will cause the threaded cylinder to move smoothly. The movement of the threaded cylinder will cause the clamping block to move synchronously.

[0015] Preferably, the compression assembly includes a drive plate, a connecting shaft, a compression groove, and a compression block. The drive plate is fixedly mounted on the threaded cylinder, the connecting shaft is fixedly mounted on the drive plate, the compression groove is fixedly mounted inside the square frame, the compression block is mounted inside the compression groove, and the other end of the connecting shaft is fixedly connected to the compression block.

[0016] By adopting the above scheme, when the drive plate moves, it will drive the connecting shaft to move. When the connecting shaft moves, it will drive the compression block to move synchronously. The movement of the compression block will compress the air inside the compression groove, and then the compressed air will flow into the sealing ring, causing the sealing ring to expand in volume.

[0017] Preferably, the adjustment mechanism includes a slide groove, a threaded rod, a servo motor, a sliding block, and a guide assembly. The slide groove is disposed inside the shielding cabinet body, the threaded rod is rotatably disposed inside the slide groove, the servo motor is fixedly disposed inside the slide groove, one end of the threaded rod is fixedly connected to the output end of the servo motor, and the sliding block is fixedly disposed on the square groove, with the threaded rod and the sliding block being threadedly connected.

[0018] By adopting the above scheme, the servo motor will drive the threaded rod to rotate. When the threaded rod rotates, it will cause the sliding block to move. The movement of the sliding block will cause the square groove to move. When the square groove moves, the guide component will guide the square groove to move smoothly. By adjusting the position of the square groove, the position of the nozzle can be adjusted, which facilitates heat dissipation treatment at different positions of the instrument.

[0019] Preferably, the guiding assembly includes a guide block and a guide rod. The guide block is fixedly mounted on the square groove, and the guide rod passes through the guide block and is fixedly connected to the inner wall of the shielding cabinet body.

[0020] By adopting the above scheme, the square groove will move and drive the guide block to move. When the guide block moves, the guide rod can guide the guide block to move smoothly.

[0021] Preferably, the heat exchange mechanism includes a heat exchange box and heat exchange tubes, the heat exchange box is fixedly installed inside the frame, and the heat exchange tubes are arranged around the inside of the heat exchange box.

[0022] By adopting the above scheme, a heat exchange liquid is installed inside the heat exchange box. When the air carrying heat flows inside the heat exchange tube, the heat carried by the air is transferred to the heat exchange liquid, thereby achieving the purpose of dissipating the heat inside the shielded cabinet body. This can dissipate heat and cool down the temperature inside the shielded cabinet body, and improve the service life of the instrument.

[0023] Preferably, one end of the heat exchange tube is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to the interior of the shielding cabinet body.

[0024] By adopting the above scheme, the air inside the shielding cabinet will be extracted through the exhaust pipe, and the air carrying heat will flow into the heat exchange tube through the exhaust pipe.

[0025] Preferably, the exhaust mechanism includes an exhaust fan, an air box, and a telescopic hose. The exhaust fan is fixedly installed on the inner wall of the frame, and the input end of the exhaust fan is connected to the heat exchange pipe. The air box is fixedly installed on the inner wall of the frame, and the output end of the exhaust fan is connected to the air box through a pipe. One end of the telescopic hose is connected to the air box, and the other end of the telescopic hose is connected to the square groove.

[0026] By adopting the above scheme, the exhaust fan will draw air from inside the heat exchange tubes, and the heat exchange tubes will draw air from inside the shielding cabinet through the exhaust pipe. The air after heat exchange will flow into the air box through the exhaust fan, and the transmitted air will flow into the square slot through the telescopic hose. The square slot is hollow, and the air will flow to the surface of the instrument through the nozzle, thereby performing local heat dissipation treatment on the instrument and improving the heat dissipation efficiency.

[0027] The beneficial effects of this invention are as follows: 1. The electromagnetic shielding cabinet of the present invention can dissipate accumulated heat and improve heat dissipation efficiency by setting a square slot and an exhaust fan. The exhaust fan draws air from inside the heat exchange tube, and the heat exchange tube draws air from inside the shielding cabinet body through the exhaust pipe. The air after heat exchange is driven into the air box by the exhaust fan, and the transmitted air force is directed into the square slot through the telescopic hose. The square slot is hollow, and the air force flows to the surface of the instrument through the nozzle, thereby dissipating heat from the instrument. This improves the purpose of dissipating the accumulated heat inside the electromagnetic shielding cabinet and effectively avoids the heat accumulation affecting the use of shielded instruments and equipment.

[0028] 2. The electromagnetic shielding cabinet of this invention uses a square frame to limit the wiring connected to instruments, preventing accidental pulling that could affect the normal operation of the shielding instruments. The motor drives an adjusting screw, which in turn moves a threaded cylinder. This movement causes a guide block to slide on a guide rod, resulting in smooth movement of the cylinder. The movement of the cylinder also causes a clamping block to move synchronously. Once the clamping block contacts the wire, it limits the wire's position and simultaneously expands the sealing ring. This expansion seals the gap between the wire and the through-slot, improving the airtightness. By limiting the wiring connected to computers and other instruments, accidental pulling is prevented, effectively avoiding wire movement during use and preventing any impact on the normal operation of the shielding instruments.

[0029] 3. The electromagnetic shielding cabinet of the present invention facilitates the adjustment of the position of the square slot through the threaded rod. The operation of the servo motor drives the threaded rod to rotate, and the rotation of the threaded rod causes the sliding block to move. The movement of the sliding block causes the square slot to move. When the square slot moves, the guide component guides the square slot to move smoothly. The position of the spray hole can be adjusted by adjusting the position of the square slot, which facilitates heat dissipation treatment at different positions of the instrument and improves heat dissipation efficiency.

[0030] 4. The electromagnetic shielding cabinet of the present invention facilitates heat recovery through the heat exchange box. The heat exchange box contains a heat exchange liquid. When air carrying heat flows inside the heat exchange tube, the heat carried by the air is transferred to the heat exchange liquid, thereby achieving the purpose of dissipating heat inside the shielding cabinet body. At the same time, heat can be recovered, improving the service life of the instrument and achieving the purpose of heat resource recovery. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a perspective view of the electromagnetic shielding cabinet of the present invention; Figure 2This is a schematic diagram of the structure of the shielding cabinet body in this invention; Figure 3 This is a schematic diagram of the aluminum frame structure in this invention; Figure 4 This is a schematic diagram of the square groove in this invention; Figure 5 This is a schematic diagram of the door frame structure in this invention; Figure 6 This is a schematic diagram of the sealing door structure in this invention; Figure 7 This is a schematic diagram of the threaded rod in this invention; Figure 8 This is a schematic diagram of the frame structure in this invention; Figure 9 This is a schematic diagram of the heat exchange box in this invention; Figure 10 This is a schematic diagram of the square frame structure in this invention; Figure 11 This is a schematic diagram of the compression groove in this invention.

[0033] In the diagram: 1. Shielding cabinet body; 2. Aluminum frame; 3. Door frame; 4. Sealing groove; 5. Sealing door; 6. Sealing sheet metal parts; 7. Square frame; 8. Through groove; 9. Sealing ring; 10. Clamping block; 11. Power motor; 12. Adjusting screw; 13. Threaded cylinder; 14. Guide block; 15. Guide rod; 16. Drive plate; 17. Connecting shaft; 18. Compression groove; 19. Compression block; 20. Slide groove; 21. Threaded rod; 22. Servo motor; 23. Square groove; 24. Guide block; 25. Guide rod; 26. Sliding block; 27. Spray hole; 28. Frame; 29. ​​Heat exchange box; 30. Heat exchange tube; 31. Exhaust pipe; 32. Exhaust fan; 33. Air box; 34. Telescopic hose. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 11As shown in the embodiment of the present invention, an electromagnetic shielding cabinet includes a cabinet body 1, an aluminum frame 2 on the cabinet body 1, a door frame 3 fixedly installed inside the cabinet body 1, a sealing door 5 corresponding to the door frame 3 connected to the front of the cabinet body 1 via a hinge, a sealing component on the sealing door 5, a limiting mechanism for limiting the circuit inside the cabinet body 1, a square groove 23 inside the cabinet body 1, an adjusting mechanism for adjusting the position of the square groove 23 inside the cabinet body 1, an array of nozzles 27 on the square groove 23, a frame 28 on the top of the cabinet body 1, a heat exchange mechanism for heat conversion inside the frame 28, and an exhaust mechanism inside the frame 28, with the output end of the exhaust mechanism connected to the square groove 23. When using the electromagnetic shielding cabinet to protect instruments that easily emit electromagnetic waves, such as computers, the computer is placed inside the cabinet body 1, and the cabinet body 1 is sealed by closing the sealing door 5, thereby suppressing the leakage of electromagnetic information from the shielding instrument and preventing electromagnetic interference. External strong electromagnetic interference can affect the normal operation of the instrument, while also preventing electromagnetic waves from harming people. The limiting mechanism can limit the cables connected to the computer and other instruments to prevent accidental pulling of the lines and affect the normal use of the computer. When the shielded instrument works for a long time, it will generate heat. When dissipating the heat, the exhaust mechanism will draw airflow, which will draw air from inside the shielded cabinet body 1. The airflow will carry heat into the heat exchange mechanism for heat exchange. After heat exchange, the airflow will flow into the square slot 23 through the exhaust mechanism. The airflow will flow into the shielded cabinet body 1 through the nozzle 27, and will flow towards the surface of the shielded instrument, thereby dissipating heat from the instrument and improving the heat dissipation efficiency. This can effectively prevent abnormal instrument temperature and affect the normal use of the instrument, thus extending the service life of the instrument. A controller and observation window can be set on the side of the shielded cabinet body 1. The controller can control the operation of the electronic components inside the electromagnetic shielding cabinet, and the observation window can be used to observe the internal conditions. The shielding cabinet body 1 is made of a 60mm thick plate produced by the air blowing method, with the upper and lower cover plates being 30mm thick. The plates are joined by tenons, and the inner and outer joints are sealed by welding. The aluminum frame 2 is welded to the shielding cabinet body 1 to ensure a seal. The aluminum frame 2 is 1mm thick and 30mm wide, with a 45° chamfer at both ends. The door frame 3 is composed of foamed aluminum and aluminum sheet metal parts. The foamed aluminum part is 30mm thick and is produced by the melt flow method. The aluminum sheet metal parts are welded together with 2mm thick (welded) and sealing sheet metal parts 6. The sealed door 5 is made of foamed aluminum plate and sheet metal parts connected together, with the foamed aluminum plate being 30mm thick and the sheet metal parts being 1mm thick, fixed to the foamed aluminum plate by welding. The hinges are welded to the shielding cabinet body 1 and the aluminum frame 2, and the door handle is welded to the other side of the foamed aluminum plate.

[0036] Furthermore, the sealing assembly includes a sealing groove 4 and a sealing sheet metal part 6. The sealing groove 4 is located on the front of the door frame 3, and the sealing sheet metal part 6, corresponding to the sealing groove 4, is fixedly installed on the sealing door 5. The sealing sheet metal part 6 is located inside the sealing groove 4. After the shielded instrument is placed inside the shielding cabinet body 1, the sealing door 5 is closed, and the sealing sheet metal part 6 enters the sealing groove 4, which seals the gap between the sealing door 5 and the door frame 3, thus improving the sealing effect.

[0037] Furthermore, the limiting mechanism includes a square frame 7, a through groove 8, a sealing ring 9, a clamping block 10, and a drive assembly. The square frame 7 is embedded inside the shielding cabinet body 1. The through groove 8 is set on the square frame 7. The sealing ring 9 is arranged around the inside of the through groove 8. The clamping block 10 is set inside the square frame 7. The drive assembly for driving the clamping block 10 to move is set inside the square frame 7. A compression assembly is set inside the square frame 7. The wires connected to the instrument can enter the shielding cabinet body 1 through the through groove 8. After the wires move to one side of the clamping block 10, the position of the clamping block 10 can be adjusted by the movement of the drive assembly. After the clamping block 10 moves and contacts the wires, it can limit the wires. Thus, during use, it can effectively prevent the wires from shaking and affecting the normal use of the shielding instrument. At the same time, the compression assembly will move and compress air to enter the sealing ring 9, causing the sealing ring 9 to expand. After the sealing ring 9 expands, it will seal the gap between the wires and the through groove 8, thereby improving the sealing performance.

[0038] Furthermore, the drive assembly includes a power motor 11, an adjusting screw 12, a threaded cylinder 13, a guide block 14, and a guide rod 15. The power motor 11 is fixedly installed inside the square frame 7. One end of the adjusting screw 12 is fixedly connected to the output end of the power motor 11. The threaded cylinder 13 is threadedly connected to the adjusting screw 12, and one end of the threaded cylinder 13 is fixedly connected to the clamping block 10. The guide block 14 is fixedly installed on the threaded cylinder 13. The guide rod 15 passes through the guide block 14 and is fixedly connected to the inner wall of the square frame 7. When the power motor 11 operates, it drives the adjusting screw 12 to rotate. When the adjusting screw 12 rotates, it causes the threaded cylinder 13 to move. The movement of the threaded cylinder 13 causes the guide block 14 to slide on the guide rod 15, thereby causing the threaded cylinder 13 to move smoothly. The movement of the threaded cylinder 13 causes the clamping block 10 to move synchronously.

[0039] Furthermore, the compression assembly includes a drive plate 16, a connecting shaft 17, a compression groove 18, and a compression block 19. The drive plate 16 is fixedly mounted on the threaded cylinder 13, the connecting shaft 17 is fixedly mounted on the drive plate 16, the compression groove 18 is fixedly mounted inside the square frame 7, the compression block 19 is mounted inside the compression groove 18, and the other end of the connecting shaft 17 is fixedly connected to the compression block 19. The sealing ring 9 is hollow. When the threaded cylinder 13 moves, it will drive the drive plate 16 to move. When the drive plate 16 moves, it will drive the connecting shaft 17 to move. When the connecting shaft 17 moves, it will drive the compression block 19 to move synchronously. The movement of the compression block 19 will compress the air inside the compression groove 18, and the compressed air will flow into the sealing ring 9, causing the sealing ring 9 to expand in volume.

[0040] Furthermore, the adjustment mechanism includes a slide 20, a threaded rod 21, a servo motor 22, a sliding block 26, and a guide assembly. The slide 20 is located inside the shielding cabinet body 1. The threaded rod 21 is rotatably mounted inside the slide 20. The servo motor 22 is fixedly mounted inside the slide 20. One end of the threaded rod 21 is fixedly connected to the output end of the servo motor 22. The sliding block 26 is fixedly mounted on the square slot 23, and the threaded rod 21 is threadedly connected to the sliding block 26. The guide assembly for guiding the square slot 23 is located inside the shielding cabinet body 1. When the servo motor 22 operates, it drives the threaded rod 21 to rotate. When the threaded rod 21 rotates, it causes the sliding block 26 to move. The movement of the sliding block 26 causes the square slot 23 to move. When the square slot 23 moves, the guide assembly guides the square slot 23, allowing it to move smoothly. By adjusting the position of the square slot 23, the position of the nozzle 27 can be adjusted, facilitating heat dissipation at different locations of the instrument.

[0041] Furthermore, the guiding assembly includes a guide block 24 and a guide rod 25. The guide block 24 is fixedly mounted on the square groove 23, and the guide rod 25 passes through the guide block 24 and is fixedly connected to the inner wall of the shielding cabinet body 1. When the square groove 23 moves, it will drive the guide block 24 to move. When the guide block 24 moves, the guide rod 25 can guide the guide block 24, so that the square groove 23 moves smoothly.

[0042] Furthermore, the heat exchange mechanism includes a heat exchange box 29 and heat exchange tubes 30. The heat exchange box 29 is fixedly installed inside the frame 28, and the heat exchange tubes 30 are arranged around the inside of the heat exchange box 29. A heat exchange liquid is installed inside the heat exchange box 29. When the air carrying heat flows inside the heat exchange tubes 30, the heat carried by the air is transferred to the heat exchange liquid, thereby achieving the purpose of dissipating the heat inside the shielded cabinet body 1. This can dissipate heat and cool down the temperature inside the shielded cabinet body 1, thus improving the service life of the instrument.

[0043] Furthermore, one end of the heat exchange tube 30 is connected to an exhaust pipe 31, and the other end of the exhaust pipe 31 is connected to the inside of the shielding cabinet body 1. The air inside the shielding cabinet body 1 is extracted through the exhaust pipe 31, and the air carrying heat flows into the heat exchange tube 30 through the exhaust pipe 31.

[0044] Furthermore, the exhaust mechanism includes an exhaust fan 32, an air box 33, and a flexible hose 34. The exhaust fan 32 is fixedly installed on the inner wall of the frame 28, and its input end is connected to the heat exchange tube 30. The air box 33 is fixedly installed on the inner wall of the frame 28, and its output end is connected to the air box 33 through a pipe. One end of the flexible hose 34 is connected to the air box 33, and the other end is connected to the square groove 23. When the exhaust fan 32 is working, it draws air from inside the heat exchange tube 30. The heat exchange tube 30 draws air from inside the shielding cabinet body 1 through the exhaust pipe 31. The air after heat exchange flows into the air box 33 through the exhaust fan 32, and the airflow flows into the square groove 23 through the flexible hose 34. The square groove 23 is hollow, and the airflow flows to the surface of the instrument through the nozzle 27, thereby providing localized heat dissipation for the instrument and improving heat dissipation efficiency.

[0045] Working principle: First, when using an electromagnetic shielding cabinet to protect instruments that easily emit electromagnetic waves, such as computers, the computer is placed inside the shielding cabinet body 1. By closing the sealing door 5, the shielding cabinet body 1 is sealed, thereby suppressing the leakage of electromagnetic information from the shielding instrument and preventing external strong electromagnetic interference from affecting the normal operation of the instrument. At the same time, it can prevent electromagnetic waves from harming people. The through slot 8 allows the wires connected to the instrument to enter the interior of the shielding cabinet body 1. After the wires move to the side of the clamping block 10, the power motor 11 will drive the adjusting screw 12 to rotate. When the adjusting screw 12 rotates, it will cause the threaded cylinder 13 to move. The movement of the threaded cylinder 13 will cause the guide block 14 to slide on the guide rod 15. This movement causes the threaded cylinder 13 to move smoothly. The movement of the threaded cylinder 13 then drives the clamping block 10 to move synchronously. Once the clamping block 10 contacts the wire, it limits the wire's position, effectively preventing wire misalignment during use and ensuring the normal operation of the shielding instrument. The movement of the threaded cylinder 13 also drives the drive plate 16, which in turn drives the connecting shaft 17. The connecting shaft 17 then drives the compression block 19 to move synchronously. The compression block 19 compresses the air inside the compression groove 18, causing it to flow into the sealing ring 9 and expand. This expansion seals the gap between the wire and the through groove 8. This improves sealing by limiting the cables connected to computers and other instruments, preventing accidental pulling of the cables and ensuring normal computer operation. When the shielded instrument generates heat during prolonged operation, the exhaust fan 32 draws air from the heat exchange tube 30 to dissipate this heat. The heat exchange tube 30 then draws air from the shielded cabinet body 1 via the exhaust pipe 31. The air after heat exchange flows through the exhaust fan 32 into the air box 33, and through the flexible hose 34, the transmitted airflow flows into the square slot 23. The square slot 23 is hollow, and the airflow flows through the nozzles 27 to the surface of the instrument, thus providing localized heat dissipation. The heat exchange box 29 is equipped with... When air carrying heat flows inside the heat exchange tube 30, which contains heat exchange fluid, the heat carried by the air is transferred to the heat exchange fluid, thereby dissipating the heat inside the shielded cabinet body 1. This heat dissipation and cooling of the temperature inside the shielded cabinet body 1 improves the service life of the instrument. The operation of the servo motor 22 drives the threaded rod 21 to rotate. When the threaded rod 21 rotates, it causes the sliding block 26 to move. The movement of the sliding block 26 causes the square groove 23 to move. When the square groove 23 moves, it is guided by the guide component to move smoothly. The position of the spray hole 27 can be adjusted by adjusting the position of the square groove 23, which facilitates heat dissipation treatment at different positions of the instrument.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic shielding cabinet, characterized in that: The system includes a shielding cabinet body (1), an aluminum frame (2) on the shielding cabinet body (1), a door frame (3) fixedly installed inside the shielding cabinet body (1), a sealing door (5) corresponding to the door frame (3) connected to the front of the shielding cabinet body (1) by a hinge, a sealing component on the sealing door (5), a limiting mechanism for limiting the line inside the shielding cabinet body (1), a square groove (23) inside the shielding cabinet body (1), an adjustment mechanism for adjusting the position of the square groove (23) inside the shielding cabinet body (1), spray holes (27) arranged in an array on the square groove (23), a frame (28) on the top of the shielding cabinet body (1), a heat exchange mechanism for heat conversion inside the frame (28), an exhaust mechanism inside the frame (28), and the output end of the exhaust mechanism is connected to the square groove (23).

2. An electromagnetic shielding cabinet according to claim 1, characterized in that: The sealing assembly includes a sealing groove (4) and a sealing sheet metal part (6). The sealing groove (4) is located on the front of the door frame (3), and the sealing sheet metal part (6) corresponding to the sealing groove (4) is fixedly located on the sealing door (5), and the sealing sheet metal part (6) is located inside the sealing groove (4).

3. An electromagnetic shielding cabinet according to claim 2, characterized in that: The limiting mechanism includes a square frame (7), a through groove (8), a sealing ring (9), a clamping block (10), and a driving assembly. The square frame (7) is embedded inside the shielding cabinet body (1). The through groove (8) is set on the square frame (7). The sealing ring (9) is arranged around the inside of the through groove (8). The clamping block (10) is set inside the square frame (7). The driving assembly for driving the clamping block (10) to move is set inside the square frame (7). A compression assembly is set inside the square frame (7).

4. An electromagnetic shielding cabinet according to claim 3, characterized in that: The drive assembly includes a power motor (11), an adjusting screw (12), a threaded cylinder (13), a guide block (14), and a guide rod (15). The power motor (11) is fixedly installed inside the square frame (7). One end of the adjusting screw (12) is fixedly connected to the output end of the power motor (11). The threaded cylinder (13) is threadedly connected to the adjusting screw (12), and one end of the threaded cylinder (13) is fixedly connected to the clamping block (10). The guide block (14) is fixedly installed on the threaded cylinder (13). The guide rod (15) passes through the guide block (14), and the guide rod (15) is fixedly connected to the inner wall of the square frame (7).

5. An electromagnetic shielding cabinet according to claim 4, characterized in that: The compression assembly includes a drive plate (16), a connecting shaft (17), a compression groove (18), and a compression block (19). The drive plate (16) is fixedly mounted on the threaded cylinder (13), the connecting shaft (17) is fixedly mounted on the drive plate (16), the compression groove (18) is fixedly mounted inside the square frame (7), the compression block (19) is mounted inside the compression groove (18), and the other end of the connecting shaft (17) is fixedly connected to the compression block (19).

6. An electromagnetic shielding cabinet according to claim 5, characterized in that: The adjustment mechanism includes a slide groove (20), a threaded rod (21), a servo motor (22), a sliding block (26), and a guide assembly. The slide groove (20) is located inside the shielding cabinet body (1). The threaded rod (21) is rotatably located inside the slide groove (20). The servo motor (22) is fixedly located inside the slide groove (20). One end of the threaded rod (21) is fixedly connected to the output end of the servo motor (22). The sliding block (26) is fixedly located on the square groove (23), and the threaded rod (21) is threadedly connected to the sliding block (26).

7. An electromagnetic shielding cabinet according to claim 6, characterized in that: The guiding component includes a guide block (24) and a guide rod (25). The guide block (24) is fixedly mounted on the square groove (23). The guide rod (25) passes through the guide block (24) and is fixedly connected to the inner wall of the shielding cabinet body (1). The guiding component for guiding the square groove (23) is located inside the shielding cabinet body (1).

8. An electromagnetic shielding cabinet according to claim 1, characterized in that: The heat exchange mechanism includes a heat exchange box (29) and heat exchange tubes (30). The heat exchange box (29) is fixedly installed inside the frame (28), and the heat exchange tubes (30) are arranged around the inside of the heat exchange box (29).

9. An electromagnetic shielding cabinet according to claim 8, characterized in that: One end of the heat exchange tube (30) is connected to the exhaust pipe (31), and the other end of the exhaust pipe (31) is connected to the interior of the shielding cabinet body (1).

10. An electromagnetic shielding cabinet according to claim 9, characterized in that: The exhaust mechanism includes an exhaust fan (32), an air box (33), and a telescopic hose (34). The exhaust fan (32) is fixedly installed on the inner wall of the frame (28), and the input end of the exhaust fan (32) is connected to the heat exchange tube (30). The air box (33) is fixedly installed on the inner wall of the frame (28), and the output end of the exhaust fan (32) is connected to the air box (33) through a pipe. One end of the telescopic hose (34) is connected to the air box (33), and the other end of the telescopic hose (34) is connected to the square groove (23).

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