Smoke backflow prevention and flow guide device for escape passage of high-rise building

Abstract

The utility model relates to high -rise building escape passage technical field discloses a kind of high -rise building escape passage smoke gas backflow guiding device, including first air pipe, the top and bottom of the first air pipe are respectively connected with connecting air pipe and passage air pipe, and the top of the connecting air pipe is connected with second air pipe, by setting switchable air guiding passage and matched fan, ventilation and air change between building interior and escape passage are realized under normal circumstances, airflow path leading to evacuation passage can be automatically closed under emergency such as fire, prevent smoke gas backflow, and smoke gas is quickly guided to building exterior and discharged, effectively improve high -rise building fire evacuation safety;Meanwhile, the device is equipped with synchronous driving's scraper cleaning mechanism, can automatically clean filter plate, avoid dust accumulation to influence smoke exhaust efficiency, ensure long-term stable operation of system.

Description

Technical Field

[0001] This utility model relates to the field of escape passage technology for high-rise buildings, specifically a smoke backflow prevention and diversion device for escape passages in high-rise buildings. Background Technology

[0002] When a fire occurs in a high-rise building, smoke often spreads rapidly along stairwells, ventilation ducts, or evacuation routes. Especially under the "chimney effect," smoke can easily flow back from the floor where the fire started to floors where the fire did not start, seriously threatening the safety of people escaping.

[0003] While some buildings are equipped with smoke exhaust fans and shafts, their smoke exhaust paths are fixed, making it difficult to flexibly switch the exhaust direction according to the actual location of the fire. This can lead to smoke potentially flowing back into evacuation routes under certain conditions, affecting escape and rescue efforts. Furthermore, existing smoke exhaust systems generally lack effective self-cleaning mechanisms, and dust accumulation on the filters can easily affect ventilation efficiency and smoke exhaust capacity.

[0004] Therefore, it is necessary to design a smoke backflow prevention and diversion device for escape routes in high-rise buildings to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a smoke backflow prevention and diversion device for escape passages in high-rise buildings, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a smoke backflow prevention and diversion device for escape passages in high-rise buildings, comprising a first air pipe, with a connecting air pipe and a passage air pipe respectively connected to the top and bottom of the first air pipe, and a second air pipe connected to the top of the connecting air pipe, and a filter plate fixedly connected to one side of both the second air pipe and the first air pipe, a connecting box fixedly connected between the second air pipe and the first air pipe, a support plate fixedly connected inside the connecting box, and a second servo motor fixedly connected to the top of the support plate, the output shaft of the second servo motor fixedly connected to a third rotating shaft, and a... The switch plate has a fixed box fixed to its top. A synchronous rotation mechanism is installed inside the fixed box. Both ends of the synchronous rotation mechanism are fixed with first bevel gears. Both the second air pipe and the first air pipe are fixed with synchronous belts. Both synchronous belts are rotatably connected with second rotating shafts. One end of each of the two second rotating shafts is fixed with a second bevel gear. The other end of each of the two second rotating shafts is fixed with a scraper. The two second bevel gears mesh with the two first bevel gears respectively. Multiple bristles are fixed to one side of each of the two scrapers. Both the first air pipe and the second air pipe have fans installed inside.

[0007] Preferably, the synchronous rotation mechanism includes a first rotating shaft, which is rotatably connected to the outer surface of the support plate. One end of the first rotating shaft passes through the interior of the fixed box and the second air pipe, and the other end of the first rotating shaft passes through the interior of the first air pipe. Both ends of the first rotating shaft are fixedly connected to a first bevel gear. Support blocks are fixedly connected inside the first and second air pipes. Second rotating shafts are rotatably connected to both support blocks. One end of each of the two second rotating shafts is fixedly connected to a second bevel gear, and the two second bevel gears mesh with the two first bevel gears respectively. Multiple bristles are fixedly connected to one side of each of the two scrapers. Fans are installed inside the first and second air pipes. A first servo motor is fixedly connected to the top of the fixed box. A fourth rotating shaft is fixedly connected to the output shaft of the first servo motor. Synchronous pulleys are fixedly sleeved on the outer surfaces of the first and fourth rotating shafts inside the fixed box. A synchronous belt is sleeved between the two synchronous pulleys through tooth grooves.

[0008] Preferably, both ends of the second air tube are provided with openings, and one end of the first air tube is provided with an opening.

[0009] Preferably, one of the fans inside the second air pipe and another fan inside the first air pipe are located on both sides of the connecting air pipe, and the switch plate is rotatably disposed between the connecting air pipe and one of the fans inside the first air pipe.

[0010] Preferably, multiple bristles on the two scrapers are respectively attached to one side of the two filter plates, and the length of the two scrapers is less than the diameter of the first air pipe and the second air pipe.

[0011] Preferably, the diameter of the switch plate is equal to the diameter of the first air pipe, and the outer surface of the switch plate is in contact with the inner wall of the first air pipe.

[0012] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0013] This invention, by setting up switchable airflow channels and matching fans, enables ventilation between the building interior and escape routes under normal circumstances. In emergencies such as fires, it can automatically close the airflow path leading to the evacuation routes to prevent smoke backflow and quickly guide the smoke to the outside of the building for exhaust, effectively improving the safety of fire evacuation in high-rise buildings. At the same time, the device is equipped with a synchronously driven scraper cleaning mechanism, which can automatically clean the filter plates to avoid dust accumulation affecting smoke exhaust efficiency and ensure long-term stable operation of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the first air tube structure of this utility model;

[0016] Figure 3 This is an exploded view of the fixing box structure of this utility model;

[0017] In the diagram: 1. First air pipe; 2. Channel air pipe; 3. Connecting air pipe; 4. Second air pipe; 5. Filter plate; 6. Connecting box; 7. First servo motor; 8. Second servo motor; 9. Support plate; 10. Fixing box; 11. First rotating shaft; 12. First bevel gear; 13. Second rotating shaft; 14. Second bevel gear; 15. Scraper; 16. Third rotating shaft; 17. Switch plate; 19. Fan; 20. Synchronous pulley; 21. Synchronous belt; 22. Fourth rotating shaft; 23. Support block. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Please see Figure 1-3This utility model provides a smoke backflow prevention and diversion device for escape passages in high-rise buildings, including a first air pipe 1. The top and bottom of the first air pipe 1 are respectively connected to a connecting air pipe 3 and a passage air pipe 2. The top of the connecting air pipe 3 is connected to a second air pipe 4. A filter plate 5 is fixedly connected to one side of both the second air pipe 4 and the first air pipe 1. A connecting box 6 is fixedly connected between the second air pipe 4 and the first air pipe 1. A support plate 9 is fixedly connected inside the connecting box 6, and a second servo motor 8 is fixedly connected to the top of the support plate 9. The output shaft of the servo motor 8 is fixedly connected to a third rotating shaft 16. A switch plate 17 is fixedly connected to the bottom end of the third rotating shaft 16, and a fixed box 10 is fixedly connected to the top of the support plate 9. A synchronous rotation mechanism is installed inside the fixed box 10, and first bevel gears 12 are fixedly connected to both ends of the synchronous rotation mechanism. Synchronous belts 21 are fixedly connected to the inside of both the second air pipe 4 and the first air pipe 1, and second rotating shafts 13 are rotatably connected to both synchronous belts 21. A second bevel gear 14 is fixedly connected to one end of each of the two second rotating shafts 13. Each of the second rotating shafts 13 has a scraper 15 fixedly connected to its other end, and the two second bevel gears 14 mesh with the two first bevel gears 12 respectively. Multiple bristles are fixedly attached to one side of each of the two scraper blades 15. A fan 19 is installed inside both the first air pipe 1 and the second air pipe 4. The ends of the first air pipe 1 and the second air pipe 4 with filter plates 5 are connected to the interior of the high-rise building, while the other end of the first air pipe 1 is placed inside a channel. The channel air pipe 2 is connected to the channel, and the other end of the second air pipe 4 is connected to the exterior of the building. The two air ducts are connected on the side. During normal use, the two fans 19 inside the first air duct 1 and the second air duct 4 are turned on simultaneously, and the switch plate 17 is in the open state, which facilitates the ventilation between the building and the passage. When a fire or some emergency generates a large amount of smoke, the switch plate 17 can be turned off by turning on the second servo motor 8. In this way, only the fans 19 inside the second air duct 4 are used to extract the smoke from the building and send it to the outside of the building. The closing of the switch plate 17 facilitates the delivery of smoke inside the passage and prevents smoke from flowing back into the passage.

[0021] To facilitate the scraping of dust adhering to the two filter plates 5 by rotating the two scrapers 15, thus avoiding interference with daily operation and airflow in emergencies, the synchronous rotation mechanism includes a first rotating shaft 11. The first rotating shaft 11 is rotatably connected to the outer surface of the support plate 9, with one end of the first rotating shaft 11 passing through the interior of the fixed box 10 and the second air pipe 4, and the other end of the first rotating shaft 11 passing through the interior of the first air pipe 1. Both ends of the first rotating shaft 11 are fixedly connected to a first bevel gear 12, and both the first air pipe 1 and the second air pipe 4 are fixedly connected to a support block 23. Both support blocks 23 are rotatably connected to... A second rotating shaft 13 is connected to the first rotating shaft 15, and a second bevel gear 14 is fixedly connected to one end of each of the two second rotating shafts 13. The two second bevel gears 14 mesh with two first bevel gears 12 respectively. Multiple bristles are fixedly connected to one side of each of the two scrapers 15. A fan 19 is installed inside the first air pipe 1 and the second air pipe 4. A first servo motor 7 is fixedly connected to the top of the fixed box 10. A fourth rotating shaft 22 is fixedly connected to the output shaft of the first servo motor 7. Synchronous pulleys 20 are fixedly sleeved on the outer surface of the first rotating shaft 11 and the fourth rotating shaft 22 inside the fixed box 10. A synchronous belt 21 is sleeved between the two synchronous pulleys 20 through tooth grooves.

[0022] In order to better extract and transport the flue gas, both ends of the second air pipe 4 are provided with openings, and one end of the first air pipe 1 is provided with an opening.

[0023] To facilitate the adjustment of air circulation in daily and emergency situations, one fan 19 inside the second air pipe 4 and another fan 19 inside the first air pipe 1 are respectively located on both sides of the connecting air pipe 3, and the switch plate 17 is rotatably disposed between the connecting air pipe 3 and one fan 19 inside the first air pipe 1.

[0024] In order to better avoid impurities in the air or smoke from affecting air circulation and evacuation, multiple bristles on the two scrapers 15 are respectively attached to one side of the two filter plates 5, and the length of the two scrapers 15 is less than the diameter of the first air pipe 1 and the second air pipe 4.

[0025] In order to better open and close the first air pipe 1, the diameter of the switch plate 17 is equal to the diameter of the first air pipe 1, and the outer surface of the switch plate 17 is in contact with the inner wall of the first air pipe 1.

[0026] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0028] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A smoke backflow prevention and diversion device for escape routes in high-rise buildings, comprising a first air pipe (1), characterized in that: The top and bottom of the first air pipe (1) are respectively connected to the connecting air pipe (3) and the channel air pipe (2), and the top of the connecting air pipe (3) is connected to the second air pipe (4). A filter plate (5) is fixedly connected to one side of the second air pipe (4) and the first air pipe (1). A connecting box (6) is fixedly connected between the second air pipe (4) and the first air pipe (1). A support plate (9) is fixedly connected inside the connecting box (6). A second servo motor (8) is fixedly connected to the top of the support plate (9). A third rotating shaft (16) is fixedly connected to the output shaft of the second servo motor (8). A switch plate (17) is fixedly connected to the bottom end of the third rotating shaft (16). A fixing box (10) is fixedly connected to the top of the support plate (9). A synchronous rotation mechanism is installed inside the fixing box (10). Scrapers (15) are fixedly connected to both ends of the synchronous rotation mechanism. A fan (19) is installed inside the first air pipe (1) and the second air pipe (4).

2. The smoke backflow prevention and diversion device for escape passages in high-rise buildings according to claim 1, characterized in that: The synchronous rotation mechanism includes a first rotating shaft (11), which is rotatably connected to the outer surface of the support plate (9). One end of the first rotating shaft (11) passes through the interior of the fixed box (10) and the second air pipe (4), and the other end of the first rotating shaft (11) passes through the interior of the first air pipe (1). Both ends of the first rotating shaft (11) are fixedly connected to a first bevel gear (12). Support blocks (23) are fixedly connected inside the first air pipe (1) and the second air pipe (4). A second rotating shaft (13) is rotatably connected to each of the two support blocks (23), and a second rotating shaft (13) is fixedly connected to one end of each of the two second rotating shafts (13). A bevel gear (14) is provided, and two second bevel gears (14) mesh with two first bevel gears (12) respectively. Multiple bristles are fixed to one side of each of the two scrapers (15). Fans (19) are installed inside the first air pipe (1) and the second air pipe (4). A first servo motor (7) is fixed to the top of the fixed box (10). A fourth rotating shaft (22) is fixed to the output shaft of the first servo motor (7). Synchronous pulleys (20) are fixedly sleeved on the outer surface of the first rotating shaft (11) and the fourth rotating shaft (22) inside the fixed box (10). A synchronous belt (21) is sleeved between the two synchronous pulleys (20) through tooth grooves.

3. The smoke backflow prevention and diversion device for escape passages in high-rise buildings according to claim 1, characterized in that: The second air pipe (4) has openings at both ends, and the first air pipe (1) has an opening at one end.

4. The smoke backflow prevention and diversion device for escape passages in high-rise buildings according to claim 1, characterized in that: The fan (19) inside the second air pipe (4) and the fan (19) inside the first air pipe (1) are located on both sides of the connecting air pipe (3), and the switch plate (17) is rotatably disposed between the fan (19) inside the connecting air pipe (3) and the fan (19) inside the first air pipe (1).

5. A smoke backflow prevention and diversion device for escape routes in high-rise buildings according to claim 1, characterized in that: Multiple bristles on the two scrapers (15) are respectively attached to one side of the two filter plates (5), and the length of the two scrapers (15) is less than the diameter of the first air pipe (1) and the second air pipe (4).

6. A smoke backflow prevention and diversion device for escape routes in high-rise buildings according to claim 1, characterized in that: The diameter of the switch plate (17) is equal to the diameter of the first air pipe (1), and the outer surface of the switch plate (17) is in contact with the inner wall of the first air pipe (1).

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