Fire-fighting automatic smoke exhaust device with emergency effect

Abstract

The utility model provides a kind of fire-fighting automatic smoke exhaust device with emergency effect, including installation top frame, servo motor is installed in the left side of installation top frame lower end, servo motor shaft end is equipped with first bevel gear, multiple bearing seats are horizontally installed in installation top frame, two-way threaded rod is installed between multiple bearing seats and is passed through, two-way threaded rod left end is equipped with second bevel gear, and second bevel gear and first bevel gear meshing transmission, the nut of screw sleeve is equipped with in the left and right end of two-way threaded rod outside, this design solves the original fire-fighting automatic smoke exhaust device with emergency effect in smoke detector position fixed, only can detect local flue gas, it is inconvenient to detect the flue gas in remaining place, emergency response speed needs to improve the problem, the utility model uses reciprocating movement type smoke detector and smoke exhaust structure, can accurately suck the flue gas that floats, detection range is wide, and emergency response speed is fast.

Description

Technical Field

[0001] This utility model is an automatic smoke exhaust device for fire protection with emergency response capabilities, belonging to the field of fire protection technology. Background Technology

[0002] In fires, smoke (containing toxic gases such as carbon monoxide and hydrogen cyanide) is the primary cause of casualties (accounting for over 70% of fire-related deaths). Rapid smoke extraction can increase visibility to over 5 meters, buying precious time for escape and rescue (extending the golden escape time from 3 minutes to 10 minutes). Automatic smoke extraction systems, as a core component of building fire protection systems, must activate rapidly in the early stages of a fire, directionally extract smoke, and maintain functionality even in extreme situations such as power outages.

[0003] Chinese patent CN219934172U proposes an automatic smoke extraction device for fire protection with emergency response capabilities. This device, through the installation of a smoke extraction mechanism, enables simple and effective smoke monitoring and extraction, resulting in good emergency response capabilities. However, due to the instability of smoke dispersion, the smoke detector in this automatic smoke extraction device is fixed in position, allowing only localized smoke detection and hindering the detection of smoke in other areas. The emergency response speed needs improvement. There is an urgent need for an automatic smoke extraction device for fire protection with emergency response capabilities to address these issues. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic smoke exhaust device for fire protection with emergency effect, so as to solve the problems mentioned in the background technology. This utility model adopts a reciprocating moving smoke detector and smoke exhaust structure, which can accurately suck up drifting smoke, with a wide detection range and fast emergency response speed.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an automatic smoke extraction device for fire protection with emergency response capabilities, comprising a mounting frame, a servo motor mounted on the lower left side of the mounting frame, a first bevel gear mounted on the shaft end of the servo motor, multiple bearing seats horizontally mounted inside the mounting frame, a bidirectional threaded rod threaded through the multiple bearing seats, a second bevel gear mounted on the left end of the bidirectional threaded rod, and the second bevel gear meshing with the first bevel gear, nuts threadedly fitted on both the left and right ends of the bidirectional threaded rod, connecting rods welded to the lower ends of the two nuts, smoke detectors mounted on the lower ends of the two connecting rods, buzzers mounted on the front ends of the two connecting rods, fan casings fixed to the rear ends of the two connecting rods, smoke extraction fans installed inside the two fan casings, fixing plates welded to the left and right sides of the upper rear side of the mounting frame, corrugated connecting pipes glued to the rear sides of the two fixing plates, a limit plate longitudinally mounted on the middle of the lower end of the mounting frame via bolts, and a limit switch mounted on the left side of the limit plate.

[0006] Furthermore, the mounting bracket is bolted to the top of the wall, and the upper ends of the two corrugated connecting pipes are connected to the external smoke exhaust duct via flanges and bolts.

[0007] Furthermore, the lower end of the mounting bracket is provided with stroke grooves on both the left and right sides, and the front and rear ends of the two connecting rods are bolted with one-way wheels, and the multiple one-way wheels slide in contact with the front and rear ends of the multiple stroke grooves respectively.

[0008] Furthermore, protective nets are installed at the lower ends of the interior of both fan casings.

[0009] Furthermore, the lower ends of the two corrugated connecting pipes are respectively connected to the two fan casings.

[0010] Furthermore, the limit switch, two smoke extraction fans, two smoke detectors, two buzzers, and servo motor are all connected to an external PID controller via wires.

[0011] The beneficial effects of this utility model are as follows: This utility model provides an automatic smoke extraction device for fire protection with emergency response capabilities. Because it incorporates a servo motor, a first bevel gear, a second bevel gear, a bearing seat, a bidirectional threaded rod, a nut, a connecting rod, a one-way wheel, a smoke detector, a buzzer, a fan casing, a smoke extraction fan, a corrugated connecting pipe, a limit plate, and a limit switch, its structure is reasonable. It employs a reciprocating smoke detector and smoke extraction structure, enabling accurate extraction of drifting smoke. It has a wide detection range, a fast emergency response speed, and strong practicality. 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 structural schematic diagram of an automatic smoke extraction device for fire fighting with emergency response capabilities according to the present invention.

[0014] Figure 2 This is a cross-sectional structural diagram of an automatic smoke exhaust device for fire protection with emergency response capability according to the present invention.

[0015] Figure 3 This is a schematic diagram showing the disassembled structure of the corrugated connecting pipe of an automatic fire smoke exhaust device with emergency response capability according to this utility model.

[0016] In the diagram: 1-Mounting top frame, 2-Servo motor, 3-First bevel gear, 4-Second bevel gear, 5-Bearing seat, 6-Double threaded rod, 7-Nut, 8-Connecting rod, 9-One-way wheel, 10-Smoke detector, 11-Buzzer, 12-Fan casing, 13-Exhaust fan, 14-Protective net, 15-Corrugated connecting pipe, 16-Fixing plate, 17-Limit plate, 18-Limit switch. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-3 This utility model provides a technical solution: an automatic smoke extraction device for fire protection with emergency response capabilities, comprising a mounting frame 1, a servo motor 2 mounted on the lower left side of the mounting frame 1, a first bevel gear 3 mounted on the shaft end of the servo motor 2, multiple bearing seats 5 horizontally mounted inside the mounting frame 1, a bidirectional threaded rod 6 threaded through the multiple bearing seats 5, a second bevel gear 4 mounted on the left end of the bidirectional threaded rod 6, and the second bevel gear 4 meshing with the first bevel gear 3, nuts 7 threadedly fitted on both the left and right ends of the bidirectional threaded rod 6, connecting rods 8 welded to the lower ends of both nuts 7, and smoke detectors 10 mounted on the lower ends of both connecting rods 8. Each connecting rod 8 is equipped with a buzzer 11 at its front end, and each connecting rod 8 is fixed with a fan tube 12 at its rear end. Each fan tube 12 is equipped with a smoke extraction fan 13. The upper rear side of the mounting frame 1 is welded with a fixing plate 16 on both sides. Corrugated connecting pipes 15 are glued to the rear side of each fixing plate 16. A limit plate 17 is longitudinally installed in the middle of the lower end of the mounting frame 1 by bolts. A limit switch 18 is installed on the left side of the limit plate 17. This design solves the problem that the smoke detectors in the original fire-fighting automatic smoke exhaust devices with emergency effects are fixed in position and can only detect local smoke, making it inconvenient to detect smoke in other areas, and the emergency response speed needs to be improved.

[0019] In the first embodiment of this utility model: the mounting bracket 1 is bolted to the top of the wall. The upper ends of the two corrugated connecting pipes 15 are connected to the external smoke exhaust duct via flanges and bolts. The lower ends of the two corrugated connecting pipes 15 are connected to the two fan casings 12. The addition of the two corrugated connecting pipes 15, with their upper ends connected to the external smoke exhaust duct via flanges and bolts, facilitates the smoke exhaust operation of the two smoke extraction fans 13. The lower left and right sides of the mounting bracket 1 have stroke grooves. The front and rear ends of the two connecting rods 8 are bolted with one-way wheels 9. Multiple one-way wheels 9 slide against the front and rear ends of multiple stroke grooves, preventing the two connecting rods 8 from swinging back and forth. Protective nets 14 are installed at the lower ends of the two fan casings 12, providing cover for the two smoke extraction fans 13. Limit switch 18, two smoke exhaust fans 13, two smoke detectors 10, two buzzers 11, and servo motor 2 are all connected to an external PID controller via wires. The added limit switch 18, two smoke exhaust fans 13, two smoke detectors 10, two buzzers 11, and servo motor 2 are all existing and well-known devices, and their control principles will not be elaborated here.

[0020] As a second embodiment of this utility model: the mounting bracket 1 is installed on the top of the external wall using external bolts. The servo motor 2 is started, and the shaft of the servo motor 2 drives the first bevel gear 3 to rotate, which in turn causes the second bevel gear 4 to mesh and rotate. This causes the bidirectional threaded rod 6 to rotate between multiple bearing seats 5. During this process, because the threads on the left and right ends of the bidirectional threaded rod 6 rotate in opposite directions, the two nuts 7 can be moved towards each other while the bidirectional threaded rod 6 rotates. This, in turn, drives multiple connecting rods 8 to move towards each other (at this time, multiple one-way wheels 9 roll within the two stroke grooves). This allows the two smoke detectors 10, two buzzers 11, and two wind... The casing 12 and the two smoke extraction fans 13 move together, and the two corrugated connecting pipes 15 also stretch, unfold or fold until the left connecting rod 8 touches the limit switch 18. Then, the PID controller controls the servo motor 2 shaft to reverse, realizing the reciprocating movement function. During this process, the two moving smoke detectors 10 can detect the smoke over a wide range and feed it back to the PID controller. When it detects the smoke below, the PID controller controls the servo motor 2 to stop rotating and starts the smoke extraction fan 13. The smoke extraction fan 13 can then draw the smoke below through the corrugated connecting pipe 15 to the external smoke exhaust duct, and the buzzer 11 will also sound an alarm.

[0021] 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.

[0022] 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. An automatic smoke extraction device for fire protection with emergency response capabilities, comprising a mounting frame (1), characterized in that: A servo motor (2) is installed on the lower left side of the mounting bracket (1). A first bevel gear (3) is installed on the shaft end of the servo motor (2). Multiple bearing seats (5) are horizontally installed inside the mounting bracket (1). A bidirectional threaded rod (6) is installed through the multiple bearing seats (5). A second bevel gear (4) is installed on the left end of the bidirectional threaded rod (6), and the second bevel gear (4) meshes with the first bevel gear (3). Nuts (7) are threaded onto both the left and right ends of the bidirectional threaded rod (6). Connecting rods (8) are welded to the lower ends of the two nuts (7). Smoke detectors (10) are installed at the lower end of each rod (8). Buzzers (11) are installed at the front ends of each of the two connecting rods (8). Fan cylinders (12) are fixed at the rear ends of each of the two connecting rods (8). Smoke extraction fans (13) are installed inside each of the two fan cylinders (12). Fixing plates (16) are welded to the left and right sides of the upper rear end of the mounting bracket (1). Corrugated connecting pipes (15) are glued to the rear sides of each of the two fixing plates (16). A limit plate (17) is installed longitudinally in the middle of the lower end of the mounting bracket (1) by bolts. A limit switch (18) is installed on the left side of the limit plate (17).

2. The automatic smoke extraction device for fire fighting with emergency response capability according to claim 1, characterized in that: The mounting bracket (1) is installed on the top of the wall by bolts, and the upper ends of the two corrugated connecting pipes (15) are connected to the external smoke exhaust duct by flanges and bolts.

3. The automatic smoke extraction device for fire fighting with emergency response capability according to claim 1, characterized in that: The mounting bracket (1) has stroke grooves on both the left and right sides at the lower end. The two connecting rods (8) are bolted with one-way wheels (9) at their front and rear ends. The multiple one-way wheels (9) slide against the front and rear ends of the multiple stroke grooves respectively.

4. The automatic smoke extraction device for fire fighting with emergency response capability according to claim 1, characterized in that: Both of the aforementioned fan casings (12) have protective nets (14) installed at their lower interior ends.

5. The automatic smoke extraction device for fire fighting with emergency response capability according to claim 1, characterized in that: The lower ends of the two corrugated connecting pipes (15) are respectively connected to the two fan cylinders (12).

6. The automatic smoke extraction device for fire fighting with emergency response capability according to claim 1, characterized in that: The limit switch (18), two smoke exhaust fans (13), two smoke detectors (10), two buzzers (11) and servo motor (2) are all connected to an external PID controller via wires.

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