Ventilation structure

Abstract

The utility model discloses a ventilation structure, relates to the civil air defense engineering technical field, including loading plate and equipment cabin, said equipment cabin mutually far away both sides are respectively fixed with air inlet pipe and exhaust pipe, in the equipment cabin is fixed with ventilation fan and filter screen plate, the side central position of filter screen plate is provided with central rotating hole. By pulling the control pull rod, the cleaning scraping rod can be driven to rotate circumferentially, dust on the filter screen plate is scraped off, workers do not need to climb to a high place frequently for cleaning, the workload is reduced, the two fixed insertion rods can be driven to move into or out of the fixed insertion holes at the same time by rotating the rotary sleeve, and the cleaning efficiency is improved. The connecting columns are fixed or loosened, then the purpose that the equipment bin can be rapidly disassembled and assembled conveniently is achieved, the installation height of the equipment bin can be adjusted by inserting the fixing insertion rods into the fixing insertion holes in different positions, the application range is widened, and the equipment bin is easy to operate, convenient to use and good in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense projects, and particularly relates to a ventilation structure. Background Technique

[0002] The civil air defense project, also known as the civil air defense works, refers to the underground protective buildings independently built to protect the personnel and materials during wartime, civil air defense command, and medical rescue. The building projects with civil air defense projects as necessary auxiliary projects are collectively referred to. During the construction of civil air defense projects, it is usually necessary to install a ventilation structure to exchange and circulate the internal air with the external air.

[0003] The patent with the publication number of CN220355633U in the prior art discloses a ventilation structure for civil air defense project buildings. It realizes the quick disassembly and assembly between the equipment bin and the loading plate through hand-tightening bolts. The strip magnet makes the disassembly between the arc-shaped clamping plate and the first metal rod and the second metal rod simple, which is convenient for cleaning the dust of the axial flow fan. The symmetrically arranged inspection doors are convenient for maintenance and can expose the fan in a larger operation space, so that the fan dust can be cleaned without dead angles. However, when disassembling and assembling the equipment bin, it is necessary for the staff to sequentially tighten multiple bolts, resulting in a more cumbersome and laborious disassembly and assembly operation. And during its long-term use, it is also necessary for the staff to frequently climb to high places to clean the dust on the filter mesh plate, which is inconvenient to use. Therefore, to solve the above problems, the utility model proposes a ventilation structure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a ventilation structure to solve the problems raised in the above background technique that when disassembling and assembling the existing structure of the equipment bin, it is necessary for the staff to sequentially tighten multiple bolts, resulting in a more cumbersome and laborious disassembly and assembly operation, and during its long-term use, it is also necessary for the staff to frequently climb to high places to clean the dust on the filter mesh plate, which is inconvenient to use.

[0005] To achieve the above object, the present utility model provides the following technical solution: A ventilation structure, comprising a load-carrying plate and an equipment bin. The two sides of the equipment bin away from each other are respectively fixedly provided with an air inlet pipe and an air outlet pipe. A ventilation fan and a filter screen plate are fixedly arranged in the equipment bin. A central rotation hole is opened at the central position of the side of the filter screen plate. A central rotation shaft is rotatably installed in the central rotation hole. One end of the central rotation shaft is fixedly installed with a connecting rotating arm. Two connecting sliding holes are opened on the side of the connecting rotating arm. Connecting sliding rods are slidably installed in the two connecting sliding holes. One ends of the two connecting sliding rods are jointly fixedly installed with a cleaning scraping rod that fits the filter screen plate. An elastic extrusion element is installed on the cleaning scraping rod. A control pull rod is arranged below the equipment bin. A driving connection component for causing the central rotation shaft to rotate is connected to the control pull rod. Two hollow columns are fixedly installed at the bottom of the load-carrying plate. Connecting columns are slidably installed in the two hollow columns. The bottom ends of the two connecting columns are fixedly installed on the top of the equipment bin. Plug rod sliding holes are opened on the sides of the two hollow columns close to each other. Fixed plug rods are slidably installed in the two plug rod sliding holes. A plurality of fixed jacks matching the fixed plug rods are opened on the sides of the two connecting columns. A disassembly and assembly control component for causing the two fixed plug rods to move towards or away from each other simultaneously is installed on the load-carrying plate.

[0006] Preferably, the driving connection component includes a driving rotating rod. An installation hole is opened on the side of the equipment bin. An installation cylinder is fixedly installed in the installation hole. The driving rotating rod is rotatably sleeved in the installation cylinder. A winding wheel is fixedly installed at one end of the driving rotating rod. A connecting pull rope is wound and installed on the winding wheel. The control pull rod is fixedly installed at the bottom end of the connecting pull rope. Connecting bevel gears are fixedly installed at the other ends of the central rotation shaft and the driving rotating rod. The two connecting bevel gears are meshed with each other. A torsion reset element for automatically reversing the driving rotating rod is installed in the installation cylinder.

[0007] Preferably, the torsion reset element includes a reset torsion spring sleeved on the driving rotating rod. The two ends of the reset torsion spring are respectively fixedly installed on the inner wall of the side of the installation cylinder and the driving rotating rod.

[0008] Preferably, the elastic extrusion element includes an extrusion spring sleeved on the connecting sliding rod. The two ends of the extrusion spring are respectively fixedly installed on the side of the connecting rotating arm and the cleaning scraping rod.

[0009] Preferably, the disassembly and assembly control assembly includes two fixing plates fixedly installed on the bottom of the load-carrying plate. Threaded holes for the lead screws are formed on the sides of the two fixing plates. A bidirectional lead screw is rotatably installed in the two threaded holes for the lead screws. The two fixed insertion rods are respectively threadedly sleeved on both ends of the bidirectional lead screw. A rotating sleeve is fixedly sleeved on the bidirectional lead screw. Horizontal guiding units are installed on both of the fixed insertion rods.

[0010] Preferably, the horizontal guiding unit includes a horizontal guiding rod fixedly installed on the side of the hollow column. A guiding block is fixedly installed on the top of the fixed insertion rod. The guiding block is slidably sleeved on the horizontal guiding rod.

[0011] Preferably, an anti-disengagement stop block is fixedly installed at the end of the horizontal guiding rod.

[0012] In summary, the technical effects and advantages of the present utility model are as follows:

[0013] 1. The structure of the present utility model is reasonable. When the control pull rod is pulled, the central rotating shaft will be driven to rotate synchronously through the connecting pull rope, the winding wheel, the driving rotating rod, and the connecting bevel gear. The rotation of the central rotating shaft will drive the cleaning scraping rod to rotate circumferentially through the connecting rotating arm and the connecting sliding rod, so as to scrape the dust on the filter screen plate. It is no longer necessary for workers to climb to high places frequently for cleaning, reducing the work burden, and the operation is simple, easy to use, and has good practicability.

[0014] 2. In the present utility model, when the rotating sleeve is rotated, the two fixed insertion rods will be driven to move into or out of the fixed insertion holes simultaneously through the bidirectional lead screw, the horizontal guiding rod, and the guiding block, so as to fix or loosen the connecting column, thus achieving the purpose of facilitating the quick disassembly and assembly of the equipment bin. And by inserting the fixed insertion rods into the fixed insertion holes at different positions, the installation height of the equipment bin can be adjusted, improving the scope of application and having better practicability.

[0015] 3. In the present utility model, through the cooperative setting of the compression spring, the cleaning scraping rod can be extruded and pushed to always closely adhere to the filter screen plate for cleaning, and the cleaning effect is better. Through the cooperative setting of the reset torsion spring, when the control pull rod is released, the driving rotating rod can be automatically reversed, and then the winding wheel can be driven to reverse together to wind and roll up the connecting pull rope, which is convenient for later reuse. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 This is a first - perspective three - dimensional structural schematic diagram of a ventilation structure of the present utility model;

[0018] Figure 2 This is a second - perspective three - dimensional structural schematic diagram of a ventilation structure of the present utility model;

[0019] Figure 3 This is an enlarged three - dimensional structural schematic diagram of the cooperation of the central rotating shaft, the cleaning scraping rod and the winding wheel in the present utility model;

[0020] Figure 4 This is an enlarged partial three - dimensional structural schematic diagram of the cooperation of the hollow column, the connecting column and the disassembly and assembly control component in the present utility model;

[0021] Figure 5 This is a front - view sectional structural schematic diagram of the connection part between the installation cylinder and the driving rotating rod in the present utility model.

[0022] In the figure: 1. Loading plate; 2. Equipment bin; 3. Ventilation fan; 4. Filter screen plate; 5. Central rotating shaft; 6. Connecting rotating arm; 7. Connecting sliding rod; 8. Cleaning scraping rod; 9. Installation cylinder; 10. Driving rotating rod; 11. Winding wheel; 12. Connecting pull rope; 13. Control pull rod; 14. Hollow column; 15. Connecting column; 16. Fixed insertion rod; 17. Compression spring; 18. Connecting bevel gear; 19. Reset torsion spring; 20. Fixed plate; 21. Bidirectional lead screw; 22. Rotating sleeve; 23. Horizontal guide rod; 24. Guide block; 25. Anti - detachment stop block. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment: Refer to Figures 1 - 5A ventilation structure shown in the figure includes a loading plate 1 and an equipment bin 2. Air inlet pipes and air outlet pipes are fixedly arranged on two sides of the equipment bin 2 away from each other. A ventilation fan 3 and a filter screen plate 4 are fixedly arranged in the equipment bin 2. The filter screen plate 4 is located between the air inlet pipe and the ventilation fan 3. A central rotating hole is opened at the central position of the side of the filter screen plate 4. A central rotating shaft 5 is rotatably installed in the central rotating hole. One end of the central rotating shaft 5 is fixedly installed with a connecting rotating arm 6. Two connecting sliding holes are opened on the side of the connecting rotating arm 6. Connecting sliding rods 7 are slidably installed in the two connecting sliding holes. One ends of the two connecting sliding rods 7 are jointly fixedly installed with a cleaning scraping rod 8 that fits the filter screen plate 4. An elastic pressing element is installed on the cleaning scraping rod 8. A control pull rod 13 is arranged below the equipment bin 2. A driving connection component for rotating the central rotating shaft 5 is connected to the control pull rod 13. The driving connection component includes a driving rotating rod 10. An installation hole is opened on the side of the equipment bin 2. An installation cylinder 9 is fixedly installed in the installation hole. The driving rotating rod 10 is rotatably sleeved in the installation cylinder 9. A winding wheel 11 is fixedly installed at one end of the driving rotating rod 10. A connecting pull rope 12 is wound and installed on the winding wheel 11. The control pull rod 13 is fixedly installed at the bottom end of the connecting pull rope 12. Connecting bevel gears 18 are fixedly installed at the other ends of the central rotating shaft 5 and the driving rotating rod 10. The two connecting bevel gears 18 are meshed with each other. A torsion reset element for automatically reversing the driving rotating rod 10 is installed in the installation cylinder 9.

[0025] With the above structure, when the control pull rod 13 is pulled, the winding wheel 11 will be driven to rotate through the connecting pull rope 12. The rotation of the winding wheel 11 will drive the central rotating shaft 5 to rotate synchronously through the driving rotating rod 10 and the connecting bevel gear 18. The rotation of the central rotating shaft 5 will drive the cleaning scraping rod 8 to rotate circularly through the connecting rotating arm 6 and the connecting sliding rod 7, so as to scrape the dust on the filter screen plate 4. It is no longer necessary for workers to climb to high places frequently for cleaning, reducing the work burden, and the operation is simple, the use is convenient, and the practicability is good.

[0026] Reference Figure 5 As shown in the figure, the torsion reset element includes a reset torsion spring 19 sleeved on the driving rotating rod 10. Two ends of the reset torsion spring 19 are respectively fixedly installed on the inner wall of the side of the installation cylinder 9 and the driving rotating rod 10. The advantage of such a setting is that when the control pull rod 13 is released, under the elastic force of the reset torsion spring 19, the driving rotating rod 10 will be automatically reversed, and then the winding wheel 11 can be driven to reverse together to wind and roll up the connecting pull rope 12, which is convenient for later reuse.

[0027] Reference Figure 3As shown, the elastic extrusion element includes an extrusion spring 17 sleeved on the connecting slide rod 7, and both ends of the extrusion spring 17 are fixedly installed on the side parts of the connecting swing arm 6 and the cleaning scraping rod 8. The advantage of such a setting is that under the elastic force of the extrusion spring 17, the cleaning scraping rod 8 will be extruded and pushed to always closely adhere to the filter screen plate 4 for cleaning, and the cleaning effect is better.

[0028] Reference Figure 1 and Figure 4 As shown, two hollow columns 14 are fixedly installed at the bottom of the load-carrying plate 1. Connecting columns 15 are slidably installed in both of the two hollow columns 14. The bottom ends of the two connecting columns 15 are fixedly installed on the top of the equipment bin 2. Plug rod sliding holes are formed in the side parts of the two hollow columns 14 close to each other. Fixed plug rods 16 are slidably installed in both of the two plug rod sliding holes. A plurality of fixing jacks matching the fixed plug rods 16 are formed in the side parts of the two connecting columns 15. A disassembly and assembly control component for enabling the two fixed plug rods 16 to move towards each other or away from each other simultaneously is installed on the load-carrying plate 1. The disassembly and assembly control component includes two fixing plates 20 fixedly installed at the bottom of the load-carrying plate 1. Lead screw rotation holes are formed in the side parts of the two fixing plates 20. A bidirectional lead screw 21 is rotatably installed in the two lead screw rotation holes together. The two fixed plug rods 16 are respectively threadedly sleeved on both ends of the bidirectional lead screw 21. A rotating sleeve 22 is fixedly sleeved on the bidirectional lead screw 21. Horizontal guiding units are installed on both of the two fixed plug rods 16.

[0029] Based on the above structure, when the rotating sleeve 22 is rotated, the bidirectional lead screw 21 will be driven to rotate. Under the combined cooperation of the horizontal guiding units, the rotation of the bidirectional lead screw 21 will drive the two fixed plug rods 16 to move towards each other or away from each other simultaneously. When the two fixed plug rods 16 move towards each other and move out of the fixing jacks, the connecting columns 15 can be loosened. When the two fixed plug rods 16 move away from each other and are inserted into the fixing jacks, the connecting columns 15 can be fixed. Thus, the purpose of facilitating the quick disassembly and assembly of the equipment bin 2 is achieved. Moreover, by inserting the fixed plug rods 16 into the fixing jacks at different positions, the installation height of the equipment bin 2 can be adjusted, the applicable range is increased, and the practicability is better.

[0030] In this embodiment, the horizontal guiding unit includes a horizontal guiding rod 23 fixedly installed on the side part of the hollow column 14. A guiding block 24 is fixedly installed at the top of the fixed plug rod 16. The guiding block 24 is slidably sleeved on the horizontal guiding rod 23. The advantage of such a setting is that through the cooperation of the horizontal guiding rod 23 and the guiding block 24, the fixed plug rod 16 can only move horizontally and will not rotate together with the bidirectional lead screw 21, playing a role of horizontal guiding and having good stability.

[0031] In this embodiment, an anti - detachment stopper 25 is fixedly installed at the end of the horizontal guide rod 23. The advantage of such a setting is that, through the setting of the anti - detachment stopper 25, the guiding block 24 can be limited and blocked, preventing the guiding block 24 from accidentally falling off the horizontal guide rod 23.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ventilation structure, comprising a loading plate (1) and an equipment compartment (2), wherein two sides of the equipment compartment (2) which are away from each other are respectively fixed with an air inlet pipe and an air outlet pipe, characterized in that: The equipment bin (2) is provided with a ventilation fan (3) and a filter screen (4). A central rotating hole is provided at the center position of the side of the filter screen (4). A central rotating shaft (5) is rotatably installed in the central rotating hole. A connecting rotating arm (6) is fixedly installed at one end of the central rotating shaft (5). Two connecting sliding holes are provided on the side of the connecting rotating arm (6). A connecting sliding rod (7) is slidably installed in each of the two connecting sliding holes. A cleaning scraper (8) that fits the filter screen (4) is fixedly installed at one end of the two connecting sliding rods (7). An elastic extrusion element is installed on the cleaning scraper (8). A control pull rod (13) is provided below the equipment bin (2). A connecting pull rod (13) is connected to the control pull rod (13). A driving connection component for causing the central shaft (5) to rotate, two hollow columns (14) are fixedly provided at the bottom of the carrier plate (1), connecting columns (15) are slidably installed in the two hollow columns (14), the bottom ends of the two connecting columns (15) are fixedly installed on the top of the equipment bin (2), the sides of the two hollow columns (14) close to each other are provided with rod sliding holes, fixed rods (16) are slidably installed in the two rod sliding holes, and the sides of the two connecting columns (15) are provided with a plurality of fixed holes matching the fixed rods (16), and a disassembly control component for causing the two fixed rods (16) to move towards or away from each other at the same time is installed on the carrier plate (1).

2. A ventilation structure according to claim 1, characterized in that: The driving connection assembly comprises a driving rotating rod (10), a mounting hole is provided on the side of the equipment bin (2), a mounting cylinder (9) is fixedly installed in the mounting hole, the driving rotating rod (10) is rotatably sleeved in the mounting cylinder (9), a winding wheel (11) is fixedly installed on one end of the driving rotating rod (10), a connecting rope (12) is wound around the winding wheel (11), the control rod (13) is fixedly installed on the bottom end of the connecting rope (12), the other end of the central rotating shaft (5) and the driving rotating rod (10) are both fixedly installed with connecting bevel gears (18), the two connecting bevel gears (18) are meshed with each other, and a torque reset element for automatically reversing the driving rotating rod (10) is installed in the mounting cylinder (9).

3. A ventilation structure according to claim 2, characterized in that: The torsion reset element comprises a reset torsion spring (19) sleeved on the driving rotating rod (10), and two ends of the reset torsion spring (19) are respectively fixedly mounted on the inner wall of the side of the mounting tube (9) and the driving rotating rod (10).

4. A ventilation structure according to claim 1, characterized in that: The elastic extrusion element comprises an extrusion spring (17) sleeved on the connecting slide rod (7), and the two ends of the extrusion spring (17) are respectively fixedly mounted on the side of the connecting rotating arm (6) and the cleaning scraper rod (8).

5. A ventilation structure according to claim 1, characterized in that: The disassembly and assembly control assembly comprises two fixed plates (20) fixedly mounted on the bottom of the loading plate (1), the sides of the two fixed plates (20) are provided with screw holes, two bidirectional screws (21) are rotatably mounted in the two screw holes, the two fixed plug rods (16) are respectively threadedly sleeved on the two ends of the bidirectional screw rod (21), a rotating sleeve (22) is fixedly sleeved on the bidirectional screw rod (21), and the two fixed plug rods (16) are both provided with horizontal guide units.

6. A ventilation structure according to claim 5, characterized in that: The horizontal guide unit comprises a horizontal guide rod (23) fixedly mounted on the side of the hollow column (14); a guide block (24) is fixedly mounted on the top of the fixed plug rod (16); and the guide block (24) is slidably sleeved on the horizontal guide rod (23).

7. A ventilation structure according to claim 6, characterized in that: An anti-slip stopper (25) is fixedly mounted on the end of the horizontal guide rod (23).

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