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CN-224230243-U - Intelligent backflow-preventing smoke evacuation device in building

CN224230243UCN 224230243 UCN224230243 UCN 224230243UCN-224230243-U

Abstract

The application relates to an intelligent backflow-preventing smoke evacuation device in a building, which relates to the technical field of fire protection of buildings and comprises a smoke exhaust main pipeline. According to the application, all guide vanes are synchronously deflected through the meshing linkage of the worm wheel and the transmission worm, a unidirectional guide barrier is formed, the local suction force is enhanced at the inlet of the branch guide pipeline by combining the negative pressure generator, smoke backflow is doubly blocked, then the pressure sensor monitors the air pressure fluctuation of the main smoke exhaust pipeline in real time, the controller dynamically adjusts the power of the smoke exhaust fan and the angle of the guide vanes, the stable air flow during multi-floor smoke exhaust is maintained, the high-temperature resistant protective cover protects the backflow-preventing smoke guide assembly from high-temperature corrosion, the independent smoke sensors in each branch guide pipeline trigger the controller to directionally open and close the corresponding pipeline, the air flow interference of a clean area is avoided, the guide vanes are physically blocked, the negative pressure generator actively sucks and globally regulates and controls the smoke exhaust fan, and the overall collaborative operation is realized, so that the backflow and efficiency defects of the traditional smoke exhaust system are jointly solved.

Inventors

  • YANG JIANMIN
  • Ma Genshen
  • QI ZHIMING

Assignees

  • 河北杰安建筑安装工程有限公司

Dates

Publication Date
20260512
Application Date
20250704

Claims (8)

  1. 1. The intelligent backflow-preventing smoke evacuation device in a building comprises a smoke evacuation main pipe (1) and is characterized in that a plurality of branch guide pipes (2) are fixedly arranged on the inner side of the smoke evacuation main pipe (1), each branch guide pipe (2) is internally provided with a backflow-preventing smoke guiding component (3), each backflow-preventing smoke guiding component (3) comprises a plurality of rotating shafts (301) which are rotatably connected to the inner side of the branch guide pipe (2), each rotating shaft (301) is fixedly provided with guide vanes (302), the top end of each rotating shaft (301) penetrates through the inner side of the branch guide pipe (2) to the outside, each rotating shaft (301) is fixedly connected with a worm wheel (303), a transmission worm (305) is arranged on the outer side of each rotating shaft (301), each transmission worm (305) is in meshed connection with each worm wheel (303), each backflow-preventing smoke guiding component (3) is provided with a protection component (4), and the outer side of the smoke evacuation main pipe (1) is fixedly provided with a controller (6).
  2. 2. The intelligent backflow-preventing smoke evacuation device in a building according to claim 1, wherein the backflow-preventing smoke guiding assembly (3) further comprises two fixing seats (304) fixedly connected to the upper sides of the branch guide pipelines (2), two ends of the transmission worm (305) are respectively and rotatably connected to the inner sides of the fixing seats (304), a servo motor (306) is fixedly embedded in the outer side of one of the fixing seats (304), and the output end of the servo motor (306) is fixedly connected to one end of the transmission worm (305).
  3. 3. The intelligent backflow-preventing smoke evacuation device in a building according to claim 1, wherein a pressure sensor (5) is fixedly arranged on the inner wall of the main smoke evacuation pipeline (1), and the pressure sensor (5) is electrically connected with the controller (6).
  4. 4. The intelligent backflow-preventing smoke evacuation device in a building according to claim 3, wherein a smoke evacuation fan (7) is fixedly arranged on the inner side of the smoke evacuation main pipeline (1), and the controller (6) is electrically connected with the smoke evacuation fan (7).
  5. 5. The intelligent backflow-preventing smoke evacuation device in a building according to claim 1, wherein smoke sensors (8) are fixedly arranged on the inner sides of the branch diversion pipelines (2), and each smoke sensor (8) is electrically connected with the controller (6).
  6. 6. The intelligent backflow-preventing smoke evacuation device in a building according to claim 1, wherein negative pressure generators (9) are arranged on the inner sides of the branch diversion pipelines (2), and each negative pressure generator (9) is electrically connected with the controller (6).
  7. 7. The intelligent backflow-preventing smoke evacuation device in a building is characterized in that the protection component (4) comprises a high-temperature-resistant protection cover (401), the integral shape of the high-temperature-resistant protection cover (401) is matched with the shape of the backflow-preventing smoke guiding component (3), the high-temperature-resistant protection cover (401) is fixedly connected to the outer side of the branch guide pipeline (2) through bolts, and a blocking plugboard (402) is inserted into the inner side of the high-temperature-resistant protection cover (401).
  8. 8. The intelligent backflow-preventing smoke evacuation device in a building according to claim 1 is characterized in that the inner sides of the main smoke evacuation pipeline (1) and the branch guide pipelines (2) are both coated with high-temperature-resistant ceramic coatings.

Description

Intelligent backflow-preventing smoke evacuation device in building Technical Field The application relates to the technical field of building fire protection, in particular to an intelligent backflow-preventing smoke evacuation device in a building. Background In modern building structures, intelligent backflow-preventing smoke evacuation devices are key facilities for guaranteeing personnel life safety and reducing property loss. With the continuous expansion of building scale and the increasing complexity of structure, traditional mechanical smoke exhaust system is gradually replaced by intelligent anti-backflow smoke evacuation device. The device can realize collecting and discharging the smog in different areas fast through setting up many exhaust pipes, effectively reduces the interior smog concentration of building, strives for the valuable time for personnel evacuation and fire rescue. However, the existing intelligent backflow-preventing smoke evacuation device has certain defects in practical application, at present, when a plurality of pipelines simultaneously carry out smoke evacuation operation, airflows among the pipelines can mutually interfere to form vortex and turbulence phenomena, the airflows interfere to not only increase the flow resistance of smoke in the pipelines, but also enable part of the smoke to flow back, and the smoke cannot be timely discharged out of a building, so that the smoke evacuation efficiency is greatly reduced, the requirements of rapid smoke evacuation under emergency conditions such as fire disaster and the like are difficult to meet, and the life safety of personnel in the building is seriously threatened. Disclosure of utility model The application aims to provide an intelligent backflow-preventing smoke evacuation device in a building, which has the advantages of realizing synchronous angle adjustment of all guide vanes, forming a one-way guide barrier, guiding air flow in a branch pipeline, preventing air flow interference and smoke backflow and the like, solving the problem that the air flow between pipelines can be mutually interfered to form vortex and turbulence, and the air flow interference not only causes the increase of flow resistance of smoke in the pipeline, but also causes the backflow of part of smoke, and can not be discharged out of the building in time. The intelligent backflow-preventing smoke evacuation device in the building adopts the following technical scheme that the intelligent backflow-preventing smoke evacuation device comprises a smoke evacuation main pipeline, wherein a plurality of branch guide pipelines are fixedly arranged on the inner side of the smoke evacuation main pipeline, backflow-preventing smoke guiding components are arranged in the branch guide pipelines, each backflow-preventing smoke guiding component comprises a plurality of rotating shafts which are rotatably connected to the inner sides of the branch guide pipelines, guide vanes are fixedly arranged on the outer sides of the rotating shafts, the top ends of the rotating shafts penetrate through the inner sides of the branch guide pipelines to extend to the outside, worm gears are fixedly connected to the end parts of the rotating shafts, transmission worms are arranged on the outer sides of the rotating shafts and are in meshed connection with the worm gears, a protection component is arranged on the outer sides of the backflow-preventing smoke guiding components, and a controller is fixedly arranged on the outer sides of the smoke evacuation main pipeline. Through adopting above-mentioned technical scheme, constitute the smoke evacuation passageway that runs through building floor perpendicularly through main flue gas pipeline and branch water conservancy diversion pipeline through setting up, afterwards prevent backward flow water conservancy diversion subassembly is through worm wheel and transmission worm's meshing transmission, realize the synchronous angle adjustment of all guide vanes, the air current mutual interference forms vortex and turbulent flow when avoiding many pipelines to discharge fume simultaneously, effectively reduce the flow resistance of smog in the pipeline, prevent smog backward flow, thereby show and promote whole smoke evacuation efficiency, simultaneously the controller is according to pressure sensor and smoke transducer's monitoring signal, dynamic control guide vane's angle of opening and shutting and smoke ventilator's power output, effectively block smog backward flow. Preferably, the backflow prevention smoke guide assembly further comprises two fixing seats fixedly connected to the upper sides of the branch guide pipelines, two ends of the transmission worm are respectively connected to the inner sides of the fixing seats in a rotating mode, one of the fixing seats is fixedly inlaid with a servo motor, and the output end of the servo motor is fixedly connected to one end of the transmission worm. By adopting the technical sch