A safe communication cabinet

Abstract

The present invention discloses a safety type communication cabinet, which relates to the technical field of communication cabinet equipment, and aims to provide a safety type communication cabinet that can filter the air entering the cabinet and prevent blockage. The technical key points include a cabinet, an air intake hood is provided on the side of the cabinet, a front air intake component is provided on the outside of the air intake hood, and the inside is connected to the inside of the cabinet, and an air intake fan is provided at the connection position, a linkage component for controlling the opening and closing of the front air intake component is provided in the air intake hood, and a negative pressure supplement component for balancing the internal and external air pressure is provided at the bottom of the air intake hood. The technical effect is that by setting the front air intake component and the linkage component, the connecting rod flips the front filter bin in the front air intake component, so that the filter hole inside the front filter bin is exposed to the outside of the air intake hood, and then the external airflow enters the air intake hood through the front filter bin, and the airflow is filtered to prevent dust from entering the cabinet.

Description

Technical Field

[0001] The invention relates to the technical field of communication cabinet equipment, in particular to a safety communication cabinet. Background Art

[0002] Communication cabinets refer to chassis cabinets used in communications. This type of product is mainly a chassis shell processed by sheet metal equipment. Communication cabinets are widely used in the communication field, including but not limited to radio and television, fire communication networks and other fields. In addition, there are communication cabinets specially designed for outdoor use. These cabinets are directly under the influence of natural climate and are made of metal or non-metallic materials. They provide outdoor physical working environment and safety system equipment for wireless communication sites or wired network site workstations.

[0003] The main safety issues of communication cabinets include anti-theft, fire prevention, waterproofing and preventing internal high temperature problems. There are various electronic devices installed in the communication cabinet, such as routers, switches, etc. These devices will generate a certain amount of heat during operation. If the design and cooling system of the equipment are not perfect, or the number of equipment is too large, exceeding the cooling capacity of the communication cabinet, it will cause the internal temperature to rise, and then cause heating problems, and in severe cases, it will easily cause damage to the communication cabinet.

[0004] In order to ensure the safety of the communication cabinet and avoid high temperature inside, the existing method usually adopts ventilation and cooling, which mainly uses a fan to blow external air into the communication cabinet to reduce the temperature of the communication cabinet. However, the existing equipment will suck dust in the air into the communication cabinet while supplying air. Excessive dust can easily affect the heat dissipation of electronic equipment such as switches and routers in the communication cabinet, and can also easily cause pollution and short circuit problems. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a safety communication cabinet which can filter the air entering the cabinet and prevent blockage.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safe communication cabinet, comprising a cabinet body, a ceiling is provided on the top of the cabinet body, a cabinet door is provided on the front, an air intake hood is provided on the side of the cabinet body, a front air intake component is provided on the outside of the air intake hood, and the inside is connected to the inside of the cabinet body, and an air intake fan is provided at the connection position, a linkage component for controlling the opening and closing of the front air intake component is provided in the air intake hood, and a negative pressure supplement component for balancing the internal and external air pressure is provided at the bottom of the air intake hood;

[0007] The front air intake component includes a frame connected to the air intake cover, and a front filter bin hinged in the frame, the outer side of the front filter bin is closed, the inner side is provided with filter holes, and the bottom is arc-shaped, a support frame is provided in the frame to fit the arc-shaped surface of the front filter bin, and a connecting rod is provided on the hinge shaft of the front filter bin, and a movable groove is provided in the connecting rod;

[0008] The linkage component includes a support plate that passes through the center of the air intake hood, a movable plate is attached to the support plate, a first rack is provided under the movable plate, a side of the first rack is meshed with a gear connected to the inner wall of the air intake hood, the other side of the gear is meshed with a second rack that slides with the inner wall of the air intake hood, a pin is provided on the second rack, and the pin is connected to the connecting rod through a movable groove.

[0009] Preferably, a sealing plate is provided under the pre-filter bin, and a sealing strip that fits with the sealing plate is provided on the support frame.

[0010] Preferably, the negative pressure supplement component comprises an air intake pipe arranged at the bottom of the air intake hood, a filter cartridge is slidably arranged in the air intake pipe, and a first spring connected to the air intake pipe is arranged on the filter cartridge.

[0011] Preferably, a plurality of groups of secondary filter components are provided in the air intake hood, and adjacent secondary filter components are arranged in a mirror image, and support components for limiting the opening and closing states are provided on the secondary filter components.

[0012] Preferably, the secondary filter component includes a Z-shaped plate connected to the inner wall of the air inlet hood, the vertical plate surface of the Z-shaped plate is set through, and a connecting frame is provided on the side, a secondary filter is inserted in the connecting frame, and the vertical plate surface of the Z-shaped plate is provided with a support rod that slides with the connecting frame, and the support rod is mounted with a third spring connected to the connecting frame.

[0013] Preferably, the supporting component comprises a supporting plate arranged on a Z-shaped plate, a clamping block is rotatably provided inside the supporting plate, one side of the clamping block corresponding to the connecting frame is an inclined surface, and the other side is a plane, and a coil spring connected to the supporting plate is provided on the side of the clamping block.

[0014] Preferably, a storage groove is provided on the inner wall of the connecting frame, a second spring which is in a compressed state and fits with the secondary filter is provided in the storage groove, and a filter replacement component which locks the position of the secondary filter is provided on the side of the air intake hood.

[0015] Preferably, the filter replacement component includes a closing plate that fits with the air intake hood, and a locking piece arranged on the outside of the closing plate and locked with the air intake hood, and a top frame corresponding to the position of the secondary filter is provided on the inner side of the closing plate.

[0016] Preferably, an air outlet component is provided on the side of the cabinet body opposite to the air inlet hood, and the air outlet component includes an air outlet hood provided on the cabinet body, a side surface of the air outlet hood is connected to the interior of the cabinet body, and an air outlet fan is provided at the connection position.

[0017] Preferably, a non-return component for preventing gas backflow is provided under the air outlet hood, and the non-return component includes an air outlet pipe passing through the bottom of the air outlet hood, a non-return plate is attached under the air outlet pipe, a sliding rod is provided on the non-return plate, a fixed frame connected to the inside of the air outlet hood is slidably fitted on the sliding rod, and a fourth spring connected to the fixed frame is mounted on the sliding rod.

[0018] Compared with the prior art, the present invention provides a safe communication cabinet, which has the following beneficial effects:

[0019] 1. By setting the front air intake component and the linkage component, when working, the air intake fan transports air into the cabinet, so that the gas in the air intake hood flows upward, and the movable plate in the linkage component is pushed upward by the airflow, so that the movable plate drives the first rack to move upward, and the first rack drives the second rack to move downward by the gear, and the second rack rotates the connecting rod downward through the pin shaft, so that the connecting rod flips the front filter bin in the front air intake component, so that the filter holes on the inner side of the front filter bin are exposed to the outside of the air intake hood, and then the external airflow enters the air intake hood through the front filter bin, and the airflow is filtered to prevent dust from entering the cabinet;

[0020] When the air intake fan stops working, the movable plate relies on gravity to drive the first rack to move downward and reset, and at the same time uses the gear to reset the second rack. When the second rack is reset, the connecting rod is rotated upward through the pin shaft, so that the connecting rod rotates the pre-filter bin inward and stores it. At the same time, when the pre-filter bin is stored, the supporting frame fitted with it scrapes away the dust blocked by the pre-filter bin, avoiding the problem of clogging of the pre-filter bin.

[0021] 2. By setting up a negative pressure supplement component, when the air intake fan delivers air into the cabinet, the air above the linkage component will be discharged first, so that negative pressure is generated above and below the linkage component, and the linkage component is pushed by the air pressure difference. However, when the air below the linkage component is discharged, a pressure difference will be generated between it and the outside world. The outside air pressure will squeeze the front air intake component, making it difficult to unfold. At this time, the negative pressure supplement component can be used to replenish air into the air intake hood, so that the outside airflow is replenished into the air intake hood through the filter cartridge, preventing the air pressure difference inside and outside the front air intake component, which leads to the problem of obstruction of the unfolding of the front air intake component.

[0022] 3. By setting up a secondary filter component and a supporting component, the secondary filter component has a secondary filter with a larger mesh number built in. The secondary filter can further filter the air and separate the fine dust in the air. In addition, the secondary filter uses a connecting frame and a supporting rod to enable itself to move horizontally. When the secondary filter is blocked after long-term use, its ventilation efficiency will be reduced, resulting in an air pressure difference on both sides of the blocked secondary filter. The air pressure difference is used to push the secondary filter open, so that the air passes through the blocked secondary filter and enters the subsequent secondary filter for filtration, while ensuring efficient filtration, avoiding the occurrence of blockage problems;

[0023] Furthermore, a supporting component is provided at the corresponding position. When the secondary filter drives the connecting frame to move out, it will be connected to the supporting component. At this time, the secondary filter together with the connecting frame will be fixed to the supporting component without external force. In this way, the blocked secondary filter can be completely unfolded to prevent the blocked secondary filter from hindering the flow of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0025] Figure 2 It is a three-dimensional schematic diagram of another viewing angle of the present invention;

[0026] Figure 3 is a schematic diagram of a cross section of an air intake hood of the present invention;

[0027] Figure 4 It is a schematic diagram of the cross section of the linkage component of the present invention;

[0028] Figure 5 is a schematic diagram of a cross section of a front air intake component of the present invention;

[0029] Figure 6 It is a three-dimensional schematic diagram of the secondary filter component of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross section of the secondary filter screen of the present invention;

[0031] Figure 8 It is a three-dimensional schematic diagram of the filter replacement component of the present invention;

[0032] Fig. 9 It is a schematic diagram of the cross section of the negative pressure supplement component of the present invention;

[0033] Fig.10 is a schematic diagram of a cross section of an air outlet component of the present invention;

[0034] Fig.11 It is a schematic diagram of the cross section of the anti-return component of the present invention;

[0035] Fig.12 For the present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0036] Fig.13 For the present invention Figure 6 Schematic diagram of the enlarged view at B.

[0037] In the figure: 1. cabinet body; 2. air intake hood; 3. ceiling; 4. cabinet door;

[0038] 5. Front air intake component; 501. Front filter compartment; 502. Frame; 503. Connecting rod; 504. Movable groove; 505. Support frame; 506. Sealing plate; 507. Sealing strip;

[0039] 6. Negative pressure supplement component; 601. Air inlet pipe; 602. First spring; 603. Filter cartridge;

[0040] 7. Filter replacement parts; 701. Closing plate; 702. Locking piece; 703. Top frame;

[0041] 8. Air outlet component; 801. Air outlet cover; 802. Air outlet fan;

[0042] 9. linkage component; 901. support plate; 902. movable plate; 903. first rack; 904. gear; 905. second rack; 906. pin;

[0043] 10. Secondary filter component; 1001. Z-shaped plate; 1002. Connecting frame; 1003. Secondary filter screen; 1004. Support rod; 1005. Storage slot; 1006. Second spring; 1007. Third spring;

[0044] 11. Intake fan;

[0045] 12. Support component; 1201. Support plate; 1202. Block; 1203. Coil spring;

[0046] 13. Anti-return component; 1301. Fixed frame; 1302. Fourth spring; 1303. Sliding rod; 1304. Anti-return plate; 1305. Exhaust pipe. DETAILED DESCRIPTION

[0047] 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.

[0048] For examples, see Figure 1-13A safety type communication cabinet comprises a cabinet body 1, a ceiling 3 is provided on the top of the cabinet body 1, a cabinet door 4 is provided on the front, an air intake cover 2 is provided on the side of the cabinet body 1, a front air intake component 5 is provided on the outside of the air intake cover 2, and the inside is connected to the inside of the cabinet body 1, and an air intake fan 11 is provided at the connection position, a linkage component 9 for controlling the opening and closing of the front air intake component 5 is provided in the air intake cover 2, and a negative pressure supplement component 6 for balancing the internal and external air pressure is provided at the bottom of the air intake cover 2;

[0049] The front air intake component 5 includes a frame 502 connected to the air intake cover 2, and a front filter bin 501 hinged in the frame 502. The outer side of the front filter bin 501 is closed, the inner side is provided with filter holes, and the bottom is arc-shaped. A support frame 505 is provided in the frame 502 to fit the arc surface of the front filter bin 501. The hinge axis of the front filter bin 501 is provided with a connecting rod 503, and a movable groove 504 is provided in the connecting rod 503.

[0050] By setting up a pre-filter bin 501, the outer side of the pre-filter bin 501 is closed, and the inner side is provided with an arc surface that fits with the support frame 505, and filter holes are opened. Under normal circumstances, the pre-filter bin 501 is in a closed state, which can prevent foreign matter from the outside from entering the air intake hood 2. When the pre-filter bin 501 is opened, the filter holes in the arc surface will be used to filter dust in the air to prevent dust from entering the cabinet 1 through the air intake hood 2. When the pre-filter bin 501 is reset and closed again, the support frame 505 that fits with the arc surface of the pre-filter bin 501 will scrape off the dust blocked on the pre-filter bin 501 to prevent dust accumulation and clogging the filter holes.

[0051] The linkage component 9 includes a support plate 901 which is arranged in the center of the air intake hood 2, a movable plate 902 is attached to the support plate 901, a first rack 903 is arranged under the movable plate 902, a side of the first rack 903 is meshed with a gear 904 connected to the inner wall of the air intake hood 2, and the other side of the gear 904 is meshed with a second rack 905 which is slidably matched with the inner wall of the air intake hood 2, and a pin 906 is arranged on the second rack 905, and the pin 906 is connected to the connecting rod 503 through a movable groove 504;

[0052] In the present invention, a movable plate 902 and a gear 904 are provided. When the air intake fan 11 is working, the air above the movable plate 902 is discharged first, so that negative pressure is generated above and below the movable plate 902. The airflow below the movable plate 902 flows upward and pushes the movable plate 902 upward, so that the movable plate 902 moves upward. When the movable plate 902 moves upward, the first rack 903 is used to drive the gear 904, and the gear 904 changes the transmission direction, so that the second rack 905 meshing therewith moves downward, and at the same time, the pin shaft 906 is used to rotate the connecting rod 503 downward, and then the pre-filter bin 501 is flipped open through the connecting rod 503;

[0053] Furthermore, the above structure can be used to rotate the pre-filter compartment 501 outward to expand, so that the closed surface of the pre-filter compartment 501 faces upward, forming a rain shelter eaves. Compared with the traditional protective baffle rotating inward to expand, the above structure can better prevent the intrusion of rainwater and effectively prevent the problem of water entering the air intake hood 2.

[0054] It should be further explained that the movable groove 504 in the connecting rod 503 is slidably matched with the pin shaft 906, so that when the connecting rod 503 rotates, the movable groove 504 can still maintain transmission cooperation with the vertically movable pin shaft 906.

[0055] A sealing plate 506 is provided under the pre-filter bin 501, and a sealing strip 507 that fits with the sealing plate 506 is provided on the support frame 505;

[0056] By setting the sealing plate 506 and the sealing strip 507, when the pre-filter bin 501 is closed, the sealing plate 506 will fit with the sealing strip 507, and the cooperation of the two will completely seal the pre-filter bin 501 and the support frame 505 to prevent dust or water stains from invading the air intake hood 2.

[0057] The negative pressure supplement component 6 includes an air intake pipe 601 disposed at the bottom of the air intake cover 2, a filter cartridge 603 is slidably disposed in the air intake pipe 601, and a first spring 602 connected to the air intake pipe 601 is disposed on the filter cartridge 603;

[0058] By setting the filter cartridge 603 and the first spring 602, when the air intake fan 11 delivers air into the cabinet 1, the air above the linkage component 9 will be discharged first, so that negative pressure is generated above and below the linkage component 9, and the linkage component 9 is pushed by the air pressure difference. However, when the air below the linkage component 9 is discharged, a pressure difference will be generated between it and the outside world, and the air pressure outside will squeeze the front air intake component 5, making it difficult to unfold. At this time, the negative pressure supplement component 6 can be used to supplement air into the air intake hood 2, so that the airflow from the outside is supplemented into the air intake hood 2 through the filter cartridge 603, preventing the air pressure difference between the inside and outside of the front air intake component 5, which leads to the problem of obstruction of the front air intake component 5 from unfolding;

[0059] A first spring 602 is further provided, and the filter cartridge 603 is made to slide with the air intake pipe 601. In this way, when the filter cartridge 603 is blocked, negative pressure is generated in the air intake hood 2 because air cannot be replenished, so that the outside air pushes the blocked filter cartridge 603 upward, and the air intake pipe 601 scrapes off the dust blocking the outside of the filter cartridge 603. Then the air intake fan 11 stops working, so that the filter cartridge 603 loses the support of air pressure and is reset under the drive of the first spring 602, so that it can still balance the air pressure inside and outside the air intake hood 2.

[0060] refer to Figure 3 , 6, 7, 8, 13, specifically, a plurality of groups of secondary filter components 10 are provided in the air intake cover 2, and adjacent secondary filter components 10 are arranged in a mirror image, and a support component 12 for limiting the opening and closing state is provided on the secondary filter component 10;

[0061] In the present invention, multiple sets of mirror-image-shaped secondary filter components 10 are used to form an S-shaped airflow channel in the air inlet hood, so that the gas can filter fine dust through the secondary filter component 10, further ensuring the cleanliness of the air. At the same time, multiple sets of secondary filter components 10 can be used in sequence to prevent the problem of gas obstruction caused by clogging of a single secondary filter component 10.

[0062] The secondary filter component 10 includes a Z-shaped plate 1001 connected to the inner wall of the air intake cover 2, the vertical plate surface of the Z-shaped plate 1001 is penetrated, and a connecting frame 1002 is provided on the side, a secondary filter screen 1003 is inserted in the connecting frame 1002, and a support rod 1004 that is slidably matched with the connecting frame 1002 is provided on the vertical plate surface of the Z-shaped plate 1001, and a third spring 1007 connected to the connecting frame 1002 is sleeved on the support rod 1004;

[0063] By setting up the secondary filter 1003 and the support rod 1004, the secondary filter 1003 can be used to further filter the air and separate the fine dust in the air. In addition, the secondary filter 1003 uses the connecting frame 1002 and the support rod 1004 to allow itself to move horizontally. When the secondary filter 1003 is blocked after long-term use, its ventilation efficiency will be reduced, resulting in an air pressure difference on both sides of the blocked secondary filter 1003. The air pressure difference is used to push the secondary filter 1003 open, so that the air passes through the blocked secondary filter 1003 and enters the subsequent secondary filter 1003 for filtration, thereby ensuring efficient filtration and avoiding the occurrence of clogging problems.

[0064] It should be further explained that a third spring 1007 is provided on the support rod 1004 to apply pressure to the connecting frame 1002. The third spring 1007 can make the secondary filter 1003 fit with the Z-shaped plate 1001 when it is not blocked, so that it has a tight sealing effect and achieves the effect of comprehensive dust filtering.

[0065] The support component 12 includes a support plate 1201 disposed on the Z-shaped plate 1001, a clamping block 1202 is rotatably disposed inside the support plate 1201, one side of the clamping block 1202 corresponding to the connecting frame 1002 is an inclined surface, and the other side is a flat surface, and a coil spring 1203 connected to the support plate 1201 is disposed on the side of the clamping block 1202;

[0066] By setting the coil spring 1203, the coil spring 1203 can stabilize and limit the position of the block 1202. When the blocked secondary filter 1003 is pushed by the airflow, the connecting frame 1002 connected thereto will be driven to move along the support rod 1004, and the connecting frame 1002 will squeeze the inclined surface of the block 1202, so that the block 1202 is squeezed open. However, when the connecting frame 1002 passes over the block 1202, the block 1202 will be promptly restored under the drive of the coil spring 1203. The connecting frame 1002 is positioned and supported so that the connecting frame 1002 and the blocked secondary filter 1003 are fixed, and the air passes through the blocked secondary filter 1003 and enters the subsequent secondary filter 1003 for filtering. It should be further explained that the elastic force of the coil spring 1203 is greater than the elastic force of the third spring 1007. When the secondary filter 1003 needs to be reset, it is only necessary to replace the new secondary filter 1003 and push it in the direction of the Z-shaped plate 1001.

[0067] The inner wall of the connecting frame 1002 is provided with a receiving groove 1005, in which a second spring 1006 in a compressed state and in contact with the secondary filter 1003 is provided, and a filter replacement component 7 for locking the position of the secondary filter 1003 is provided on the side of the air intake cover 2;

[0068] By providing the storage groove 1005 and the second spring 1006, the storage groove 1005 serves to accommodate the second spring 1006, so that the compressed second spring 1006 can completely enter the storage groove 1005, avoiding the generation of a gap between the secondary filter 1003 and the connecting frame 1002. When the filter replacement component 7 is opened, the secondary filter 1003 will lose its fixation. At this time, the compressed second spring 1006 will release its elastic force to push the secondary filter 1003 outward, so that the secondary filter 1003 emerges from the air intake hood 2, making it easy to take out and replace the blocked secondary filter 1003.

[0069] The filter replacement component 7 includes a closing plate 701 that fits with the air intake cover 2, and a locking member 702 that is arranged on the outside of the closing plate 701 and is locked and connected with the air intake cover 2. The inside of the closing plate 701 is provided with a top frame 703 that corresponds to the position of the secondary filter 1003;

[0070] By setting the locking piece 702 and the top frame 703, when the closing plate 701 is fitted with the air intake hood 2, the top frame 703 on the inner side of the closing plate 701 will squeeze the secondary filter 1003, so that the secondary filter 1003 is tightly fitted with the connecting frame 1002, and the second spring 1006 is compressed. At the same time, the closing plate 701 is connected to the outer side of the air intake hood 2 by using the locking piece 702. It should be further explained that while squeezing the secondary filter 1003, the top frame 703 will not limit the lateral movement of the secondary filter 1003 and the connecting frame 1002.

[0071] refer to Figure 2 , 10 11. Specifically, an air outlet component 8 is provided on the side of the cabinet 1 opposite to the air inlet cover 2. The air outlet component 8 includes an air outlet cover 801 provided on the cabinet 1. The side of the air outlet cover 801 is connected to the inside of the cabinet 1, and an air outlet fan 802 is provided at the connection position;

[0072] By providing an air outlet hood 801 and an air outlet fan 802, the air in the cabinet 1 can be discharged through the air outlet hood 801 by using the air outlet fan 802, so that the air in the cabinet 1 can circulate quickly, and the circulating air can improve the heat dissipation efficiency of the cabinet 1, further ensuring the safety of the cabinet 1.

[0073] A non-return component 13 is provided under the gas outlet hood 801 to prevent gas from flowing back. The non-return component 13 includes a gas outlet pipe 1305 that passes through the bottom of the gas outlet hood 801. A non-return plate 1304 is attached to the bottom of the gas outlet pipe 1305. A sliding rod 1303 is provided on the non-return plate 1304. A fixing frame 1301 connected to the inside of the gas outlet hood 801 is slidably matched on the sliding rod 1303. A fourth spring 1302 connected to the fixing frame 1301 is sleeved on the sliding rod 1303.

[0074] By setting the fourth spring 1302 and the check plate 1304, when the exhaust fan 802 is working, the air in the cabinet 1 will be discharged into the exhaust hood 801. At this time, positive pressure will be generated in the exhaust hood 801, and the air pressure is higher than that of the outside. The check plate 1304 is pressed downward by the air pressure difference, so that the check plate 1304 moves downward and opens under the support of the sliding rod 1303, so that the air in the exhaust hood 801 can be discharged. When the exhaust fan 802 stops working, the air pressure in the exhaust hood 801 tends to be balanced. At this time, the check plate 1304 is pulled upward by the sliding rod 1303 under the elastic force of the fourth spring 1302, so that the check plate 1304 is in contact with the air outlet pipe to prevent external dust from entering the exhaust hood.

[0075] Working principle:

[0076] The air intake fan 11 transports the air in the air intake hood 2 into the cabinet 1, so that the air pressure on the upper part of the movable plate 902 is lower than that on the lower part. The air flows upward to push the movable plate 902 upward. At the same time, the outside air is replenished into the air intake hood 2 through the filter cartridge 603. When the movable plate 902 is pushed upward, it drives the first rack 903 connected thereto to move upward. The first rack 903 drives the second rack 905 to move downward through the gear 904. The second rack 905 drives the connecting rod 503 to rotate downward through the pin 906. When the connecting rod 503 rotates downward, it flips the pre-filter bin 501 outward. Then a large amount of outside air enters the air intake hood 2 through the pre-filter bin 501 and filters the dust.

[0077] The air is further filtered through the secondary filter 1003 in the air intake hood 2, and the filtered air enters the cabinet 1 through the air intake fan 11. At the same time, the air outlet fan 802 on the other side is turned on to discharge the hot air in the cabinet 1 through the air outlet hood 801, so that the air flow in the cabinet 1 accelerates the heat dissipation efficiency.

[0078] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A safety communication cabinet, comprising a cabinet body (1), a top of the cabinet body (1) being provided with a ceiling (3), and a front of the cabinet body (1) being provided with a cabinet door (4), characterized in that: An air intake hood (2) is provided on the side of the cabinet (1), a front air intake component (5) is provided on the outside of the air intake hood (2), the inside of the air intake hood (2) is connected to the inside of the cabinet (1), and an air intake fan (11) is provided at the connection position, a linkage component (9) for controlling the opening and closing of the front air intake component (5) is provided inside the air intake hood (2), and a negative pressure supplement component (6) for balancing the internal and external air pressure is provided at the bottom of the air intake hood (2); The front air intake component (5) comprises a frame (502) connected to the air intake cover (2), and a front filter bin (501) hinged in the frame (502); the outer side surface of the front filter bin (501) is closed, the inner side surface is provided with filter holes, and the bottom is arc-shaped; a support frame (505) is provided in the frame (502) and is in contact with the arc-shaped surface of the front filter bin (501); a connecting rod (503) is provided on the hinge shaft of the front filter bin (501), and a movable groove (504) is provided in the connecting rod (503); The linkage component (9) comprises a support plate (901) which is arranged in the center of the air intake hood (2), a movable plate (902) is attached to the support plate (901), a first rack (903) is arranged under the movable plate (902), a side of the first rack (903) is meshed with a gear (904) connected to the inner wall of the air intake hood (2), and the other side of the gear (904) is meshed with a second rack (905) which is slidably matched with the inner wall of the air intake hood (2), and a pin shaft (906) is arranged on the second rack (905), and the pin shaft (906) is connected to the connecting rod (503) through a movable groove (504).

2. A safe communication cabinet according to claim 1, characterized in that: A sealing plate (506) is provided under the pre-filter bin (501), and a sealing strip (507) that fits with the sealing plate (506) is provided on the support frame (505).

3. A safe communication cabinet according to claim 1, characterized in that: The negative pressure supplement component (6) comprises an air intake pipe (601) arranged at the bottom of the air intake cover (2), a filter cartridge (603) being slidably arranged inside the air intake pipe (601), and a first spring (602) connected to the air intake pipe (601) being arranged on the filter cartridge (603).

4. A safe communication cabinet according to claim 1, characterized in that: A plurality of groups of secondary filter components (10) are arranged in the air intake hood (2), and adjacent secondary filter components (10) are arranged in a mirror image. Support components (12) for limiting the opening and closing state are provided on the secondary filter components (10).

5. A safe communication cabinet according to claim 4, characterized in that: The secondary filtering component (10) comprises a Z-shaped plate (1001) connected to the inner wall of the air inlet hood (2); the vertical plate surface of the Z-shaped plate (1001) is arranged to penetrate, and a connecting frame (1002) is provided on the side; a secondary filter screen (1003) is inserted into the connecting frame (1002); the vertical plate surface of the Z-shaped plate (1001) is provided with a support rod (1004) that is slidably matched with the connecting frame (1002); and a third spring (1007) connected to the connecting frame (1002) is sleeved on the support rod (1004).

6. A safe communication cabinet according to claim 5, characterized in that: The support component (12) comprises a support plate (1201) arranged on a Z-shaped plate (1001), a clamping block (1202) being rotatably arranged inside the support plate (1201), one side of the clamping block (1202) corresponding to the connecting frame (1002) being an inclined surface, and the other side being a flat surface, and a coil spring (1203) connected to the support plate (1201) being arranged on a side surface of the clamping block (1202).

7. A safe communication cabinet according to claim 5, characterized in that: The inner wall of the connecting frame (1002) is provided with a storage groove (1005), and a second spring (1006) in a compressed state and in contact with the secondary filter (1003) is provided in the storage groove (1005), and a filter replacement component (7) for locking the position of the secondary filter (1003) is provided on the side of the air intake cover (2).

8. A safe communication cabinet according to claim 7, characterized in that: The filter replacement component (7) comprises a closing plate (701) that fits with the air intake hood (2), and a locking member (702) that is arranged on the outside of the closing plate (701) and is locked and connected to the air intake hood (2); a top frame (703) corresponding to the position of the secondary filter (1003) is arranged on the inside of the closing plate (701).

9. A safe communication cabinet according to claim 1, characterized in that: An air outlet component (8) is provided on a side of the cabinet (1) opposite to the air inlet hood (2), the air outlet component (8) comprising an air outlet hood (801) provided on the cabinet (1), the side of the air outlet hood (801) being connected to the interior of the cabinet (1), and an air outlet fan (802) being provided at the connection position.

10. A safe communication cabinet according to claim 9, characterized in that: A non-return component (13) for preventing gas from flowing back is provided under the gas outlet hood (801).

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