Smoke-proof air quality detection device
By integrating a composite sensor array and a rotatable mounting structure, the problems of lagging monitoring and single parameters in existing smoke control and exhaust systems have been solved, enabling real-time monitoring of smoke, CO, and temperature, and improving the monitoring range and flexibility of the smoke control and exhaust system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGXIAOHENGAN BEIJING TECH
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-26
AI Technical Summary
Existing smoke control and exhaust systems suffer from problems such as monitoring lag, limited parameters, and fixed locations in their air quality detection devices. This leads to inaccurate smoke exhaust strategies and an inability to monitor smoke, CO, and temperature in real time, affecting personnel evacuation and rescue efforts.
An integrated composite sensor array is used to monitor smoke, CO, and temperature. Combined with a rotatable mounting bracket and a movable structure, it enables air quality monitoring at multiple locations within a building. The rotation and movement of the detection cylinder and the bracket are driven by a servo motor and a ball screw, thus expanding the monitoring range.
It enables real-time monitoring of smoke, CO, and temperature, avoiding monitoring lag, enhancing the comprehensiveness and flexibility of monitoring, and improving the practicality of the smoke control and exhaust system.
Smart Images
Figure CN224416839U_ABST
Abstract
Description
Technical Field
[0001] This utility model is a smoke-proof air quality detection device, belonging to the field of air quality detection technology. Background Technology
[0002] In building fires, the core objective of smoke control and exhaust systems is to reduce smoke concentration (ensuring visibility ≥ 5m) and control toxic gases (such as CO concentration ≤ 100ppm) to buy time for evacuation and rescue. Air quality detection devices, acting as the "sensing center" of the smoke control and exhaust system, must monitor parameters such as smoke, toxic gases, and temperature in real time to provide a basis for the coordinated control of smoke exhaust fans and fire dampers.
[0003] However, existing detection devices have obvious limitations: in the early stages of a fire, delayed monitoring (such as relying solely on temperature triggering) leads to untimely smoke extraction; the monitoring parameters are limited (measuring only smoke or CO), and the location is fixed, which cannot reflect the overall air quality, resulting in inaccurate smoke extraction strategies (such as excessive smoke extraction causing fire to spread, or insufficient smoke extraction leading to personnel poisoning). There is an urgent need for a smoke extraction air quality detection device to solve the above-mentioned problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a smoke-proof air quality detection device to solve the problems mentioned in the background. This invention uses an integrated composite sensor group to monitor smoke, CO, temperature, and humidity. It is equipped with a rotatable mounting bracket and a movable structure, enabling monitoring of other locations within the building. It also has a wide monitoring range and is less prone to monitoring lag.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a smoke-proof air quality detection device, comprising a mounting frame and a detection cylinder. A ball screw is horizontally mounted inside the mounting frame via bearings. A servo motor is mounted at the right end of the mounting frame. The detection cylinder is located below the mounting frame. An exhaust fan is mounted at the upper end of the detection cylinder. Two mounting side plates are bolted to the left and right sides of the inside of the detection cylinder. A connecting rod is welded between the two mounting side plates. A limiting cylinder is fixed through the middle of the connecting rod. An integrated composite sensor is clamped inside the limiting cylinder. The detector assembly includes a small motor mounted on the lower left side of the detection cylinder. The shaft of the small motor passes through the detection cylinder and connects to a bevel gear. A fixed outer ring is welded to the lower outer side of the detection cylinder. A stepped ring is fixed to the lower end of the fixed outer ring by multiple bolts. An annular rail is horizontally fixed inside the stepped ring. A welding ring is slidably installed on the upper outer side of the annular rail. A lower support cylinder is welded inside the welding ring. A bevel gear ring is welded to the upper inner side of the lower support cylinder. A dustproof net is horizontally fixed inside the bevel gear ring. An arc-shaped guide ring is fixed to the upper part of the dustproof net. A conical bucket is inclinedly fixed to the left side of the lower end of the lower support cylinder.
[0006] Furthermore, the servo motor shaft is connected to the ball screw drive, and two nut sleeves are threadedly fitted on the outside of the ball screw. The lower ends of the two nut sleeves are welded to the detection cylinder, and one-way wheels are installed on the upper ends of the two nut sleeves. The two one-way wheels slide in contact with the upper end of the mounting crossbeam.
[0007] Furthermore, a PLC controller is installed at the front end of the detection cylinder, and the PLC controller is connected to a servo motor, a fan, an integrated composite sensor group, a small motor, and an external power supply via wires.
[0008] Furthermore, the integrated composite sensor group comprises a smoke sensor, a CO sensor, a temperature sensor, and a humidity sensor, with the arc-shaped flow guide ring located below the integrated composite sensor group.
[0009] Furthermore, the upper end of the lower support cylinder slides in contact with the detection cylinder.
[0010] Furthermore, the bevel ring meshes with a bevel gear for transmission.
[0011] The beneficial effects of this utility model are as follows: This utility model provides a smoke-proof and exhaust air quality detection device. Because it incorporates a mounting frame, ball screw, servo motor, detection cylinder, exhaust fan, limiting cylinder, bevel gear, small motor, lower support cylinder, bevel gear ring, welding ring, annular rail, stepped ring, fixed outer ring, and conical hopper, its structure is reasonable. It uses an integrated composite sensor group to monitor smoke, CO, temperature, and humidity. Furthermore, it features a rotatable lower support and a movable structure, enabling monitoring of other locations within the building. It has a wide monitoring range, is less prone to monitoring lag, and is highly practical. Attached Figure Description
[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0013] Figure 1 This is a schematic diagram of the structure of a smoke-proof air quality detection device according to the present invention;
[0014] Figure 2 This is a cross-sectional structural diagram of a smoke-proof air quality detection device according to the present invention;
[0015] Figure 3 This is a schematic diagram of the integrated composite sensor group structure of a smoke-proof air quality detection device according to the present invention;
[0016] Figure 4 This is an enlarged schematic diagram of the bevel gear structure of the smoke-proof air quality detection device of this utility model.
[0017] In the diagram: 1-Mounting crossbeam, 2-Ball screw, 3-Servo motor, 4-Detection cylinder, 5-One-way wheel, 6-PLC controller, 7-Exhaust fan, 8-Mounting side plate, 9-Connecting rod, 10-Limiting cylinder, 11-Integrated composite sensor group, 12-Bevel gear, 121-Small motor, 13-Lower support cylinder, 14-Bevel gear ring, 15-Arc-shaped guide ring, 16-Dustproof net, 17-Welding ring, 18-Circular rail, 19-Step ring, 20-Fixed outer ring, 21-Conical bucket. Detailed Implementation
[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0019] Please see Figures 1-4This utility model provides a technical solution: a smoke-proof air quality detection device, including a mounting frame 1 and a detection cylinder 4. A ball screw 2 is horizontally mounted inside the mounting frame 1 via bearings. A servo motor 3 is mounted on the right end of the mounting frame 1. The detection cylinder 4 is located below the mounting frame 1. An exhaust fan 7 is mounted on the upper end of the detection cylinder 4. Two mounting side plates 8 are bolted to the left and right sides of the detection cylinder 4. A connecting rod 9 is welded between the two mounting side plates 8. A limiting cylinder 10 is fixed through the middle of the connecting rod 9. An integrated composite sensor group 11 is clamped inside the limiting cylinder 10. A small motor 121 is mounted on the lower left side of the detection cylinder 4. The shaft end of the small motor 121 passes through the detection cylinder. The cylinder 4 is connected to the bevel gear 12. A fixed outer ring 20 is welded to the lower end of the outer side of the detection cylinder 4. A stepped ring 19 is fixed to the lower end of the fixed outer ring 20 by multiple bolts. An annular rail 18 is horizontally fixed inside the stepped ring 19. A welding ring 17 is slidably installed on the upper end of the outer side of the annular rail 18. A lower support cylinder 13 is welded inside the welding ring 17. A bevel gear ring 14 is welded to the upper end of the inner side of the lower support cylinder 13. A dustproof net 16 is horizontally fixed inside the bevel gear ring 14. An arc-shaped guide ring 15 is fixed to the upper end of the dustproof net 16. A conical bucket 21 is tilted and fixed to the left side of the lower end of the lower support cylinder 13. This design solves the problems of existing detection devices having single monitoring parameters, fixed positions, small monitoring range, and easy monitoring lag.
[0020] As the first embodiment of this utility model: the shaft end of the servo motor 3 is connected to the ball screw 2 for transmission. Two nut cylinders are threadedly sleeved on the outside of the ball screw 2, and the lower ends of the two nut cylinders are welded to the detection cylinder 4. One-way wheels 5 are installed on the upper ends of the two nut cylinders. The two one-way wheels 5 slide against the upper end of the mounting frame 1. When the ball screw 2 is rotated by the added servo motor 3, the two nut cylinders can be moved by the thread principle, thereby forcing the two one-way wheels 5 to slide inside the upper end of the mounting frame 1, so as to realize the horizontal movement of the detection cylinder 4.
[0021] A PLC controller 6 is installed at the front end of the detection cylinder 4. The PLC controller 6 is connected to the servo motor 3, the exhaust fan 7, the integrated composite sensor group 11, the small motor 121, and the external power supply via wires. The integrated composite sensor group 11 includes a smoke sensor, a CO sensor, a temperature sensor, and a humidity sensor. The arc-shaped guide ring 15 is located below the integrated composite sensor group 11. The added PLC controller 6, servo motor 3, exhaust fan 7, smoke sensor, CO sensor, temperature sensor, humidity sensor, and small motor 121 are all existing and well-known components, and the control principle will not be elaborated. The upper end of the lower support cylinder 13 slides against the detection cylinder 4. When the added lower support cylinder 13 is driven to rotate, it can change the orientation of the conical bucket 21. The bevel gear ring 14 meshes with the bevel gear 12 for transmission. When the bevel gear 12 rotates, it can drive the bevel gear ring 14 and the lower support cylinder 13 to rotate horizontally.
[0022] As a second embodiment of this utility model: In use, the exhaust fan 7 is started by the PLC controller 6. The exhaust fan 7 generates downward suction, which draws air in the direction it faces through the detection cylinder 4, the lower support cylinder 13, and the conical bucket 21. The air is filtered by the dustproof net 16 and guided by the welding ring 17 to contact the integrated composite sensor group 11, which includes a smoke sensor, a CO sensor, a temperature sensor, and a humidity sensor, thus monitoring smoke, CO, temperature, and humidity. The servo motor 3 is started, which drives the ball screw 2 to rotate. Through the thread principle, it drives the two nut cylinders to move, thereby forcing the two one-way wheels 5 to slide inside the upper end of the mounting frame 1, realizing the horizontal movement of the detection cylinder 4. At the same time, the small motor 121 is started, which drives the bevel gear 12 to rotate. The bevel gear ring 14 meshes with it, driving the lower support cylinder 13 to rotate (during this process, the welding ring 17 rotates on the upper side of the ring rail 18), thereby realizing the movement and direction adjustment of the conical bucket 21, and thus enabling the monitoring of air in other locations within the building.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A smoke detection device, comprising a mounting crossbar (1) and a detection cylinder (4), characterized in that: A ball screw (2) is horizontally mounted inside the mounting frame (1) via bearings. A servo motor (3) is mounted on the right end of the mounting frame (1). The detection cylinder (4) is located below the mounting frame (1). An exhaust fan (7) is installed at the upper end of the inside of the detection cylinder (4). Two mounting side plates (8) are bolted to the left and right sides of the inside of the detection cylinder (4). A connecting rod (9) is welded between the two mounting side plates (8). A limiting cylinder (10) is fixed through the middle of the connecting rod (9). An integrated composite sensor group (11) is installed inside the limiting cylinder (10). A small motor (121) is installed at the lower left end of the detection cylinder (4). The shaft end of the small motor (121) passes through the detection cylinder. (4) Connected to the bevel gear (12), the lower end of the outer side of the detection cylinder (4) is welded with a fixed outer ring (20), the lower end of the fixed outer ring (20) is fixed with a stepped ring (19) by multiple bolts, the step ring (19) is horizontally fixed with an annular rail (18), the upper end of the annular rail (18) is slidably installed with a welding ring (17), the lower support cylinder (13) is welded inside the welding ring (17), the upper end of the lower support cylinder (13) is welded with a bevel gear ring (14), the upper end of the bevel gear ring (14) is horizontally fixed with a dustproof net (16), the upper end of the dustproof net (16) is fixed with an arc-shaped guide ring (15), and the lower left side of the lower support cylinder (13) is inclinedly fixed with a conical bucket (21).
2. The smoke evacuation air quality detection device of claim 1, wherein: The servo motor (3) shaft end is connected to the ball screw (2) for transmission. The ball screw (2) is fitted with two nut cylinders by thread on the outside. The lower ends of the two nut cylinders are welded to the detection cylinder (4). The upper ends of the two nut cylinders are equipped with one-way wheels (5). The two one-way wheels (5) slide against the upper end of the mounting frame (1).
3. The smoke-free air quality detection device of claim 1, wherein: The front end of the detection cylinder (4) is equipped with a PLC controller (6), and the PLC controller (6) is connected to the servo motor (3), the exhaust fan (7), the integrated composite sensor group (11), the small motor (121) and the external power supply through wires.
4. The smoke-free air quality detection device of claim 1, wherein: The integrated composite sensor group (11) consists of a smoke sensor, a CO sensor, a temperature sensor, and a humidity sensor, and the arc-shaped flow guide ring (15) is located below the integrated composite sensor group (11).
5. The smoke-proof air quality detection device according to claim 1, characterized in that: The upper end of the lower support cylinder (13) slides against the detection cylinder (4).
6. The smoke-proof air quality detection device according to claim 1, characterized in that: The bevel ring (14) meshes with the bevel gear (12) for transmission.