Tunnel foam spray extinguishing device

Abstract

The utility model discloses a tunnel foam spray fire extinguishing device, including the shallow, the shallow is equipped with the storage tank fixedly, the storage tank top is equipped with the support fixedly, and the support top surface is equipped with the mounting bracket rotatoryly, and the mounting bracket is equipped with the fixing frame rotatoryly, and the fixing frame is equipped with the spray head fixedly in, and the shallow is equipped with the water pump fixedly, and the water pump input is connected with the storage tank, and the spray head bottom is equipped with the fixed cover fixedly, and the fixed cover bottom rotatoryly is equipped with the rotating cover, and the water pump output is connected with the rotating cover and is equipped with the connecting pipe, and the fixed cover inboard is equipped with the baffle fixedly, the baffle sets up multiple, through setting up multiple baffles in the fixed cover and cooperating rotating cover, screw rod, transmission plate and the linkage structure of push cover, has realized the accurate control to foam material spray flow, has solved the technical problem that foam spray fire extinguishing device can not adjust foam flow according to the fire scale in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a tunnel foam spray fire extinguishing device. Background Technology

[0002] In tunnel fire emergency response scenarios, rapid and effective fire suppression systems are crucial for ensuring traffic safety and minimizing property damage. The long, narrow, and enclosed interior of tunnels makes heat dissipation difficult, leading to rapid smoke accumulation and posing a serious threat to lives and hindering rescue efforts. Foam spray fire suppression systems, due to their high efficiency and wide coverage, have become an important component of tunnel fire protection systems. However, existing tunnel foam spray fire suppression systems mostly employ a fixed flow rate design, unable to flexibly adjust the foam output based on fire size, type of burning material, and environmental conditions. This unadjustable characteristic leads to excessive foam consumption in small fires, increasing firefighting costs and potentially causing secondary pollution. In large fires, insufficient foam supply may delay optimal firefighting opportunities, affecting extinguishing effectiveness and failing to meet the precise firefighting needs of different fire scenarios.

[0003] In tunnel operation, maintenance, and firefighting, the flexibility and adaptability of firefighting equipment are crucial. Especially in the complex and ever-changing tunnel fire environment, factors such as the location of the fire source, the direction of fire spread, and the distribution of obstacles directly affect the firefighting effect. Traditional foam spray fire extinguishing devices usually adopt a fixed-angle design, and once the spray direction is determined after installation, it is difficult to adjust. This makes it impossible for the foam spray to accurately cover the fire source area. Especially when the fire source is located in special locations such as tunnel corners, equipment compartments, or under vehicles, the fixed-angle spray cannot directly act on the combustion point, resulting in a significant reduction in firefighting efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a tunnel foam spray fire extinguishing device to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tunnel foam spray fire extinguishing device, comprising a trolley, a storage tank fixedly mounted on the trolley, a bracket fixedly mounted on the top of the storage tank, a mounting frame rotatably mounted on the top surface of the bracket, a fixed frame rotatably mounted on the mounting frame, a nozzle fixedly mounted inside the fixed frame, a water pump fixedly mounted on the trolley, the water pump input end connected to the storage tank, a fixed sleeve fixedly mounted on the bottom end of the nozzle, a rotating sleeve rotatably mounted on the bottom end of the fixed sleeve, a connecting pipe connecting the water pump output end and the rotating sleeve, and baffles fixedly mounted inside the fixed sleeve, wherein multiple sets of baffles are provided.

[0008] The present invention is further configured such that a first motor is fixedly mounted on the bottom surface of the bracket, and the output end of the first motor is fixedly connected to the bottom surface of the mounting bracket. The first motor drives the mounting bracket to rotate, thereby achieving precise adjustment of the lateral angle of the nozzle and improving the adaptability of the fire extinguishing device to fire sources in different locations.

[0009] The present invention is further configured such that a screw is fixedly provided on the inner side of the rotating sleeve, a transmission plate is threadedly connected to the outer wall of the screw, and a push sleeve is fixedly provided on the outer side of the transmission plate. By rotating the rotating sleeve, the screw is driven to rotate and the transmission plate and push sleeve are driven to move, forming a transmission mechanism for flow regulation, which solves the technical problem of the non-adjustable flow of traditional fire extinguishing devices.

[0010] The present invention is further configured such that a second motor is fixedly mounted on the top surface of the mounting bracket, a connecting rod is fixedly mounted on the output end of the second motor, a movable block is rotatably connected to the top of the connecting rod, a movable groove is opened in the mounting bracket, and the movable block slides in the movable groove. The second motor drives the connecting rod and the movable block to move, thereby realizing the rotation adjustment of the mounting bracket, making the longitudinal angle of the nozzle adjustable, and ensuring that the foam spray can accurately cover the fire source area.

[0011] The present invention is further provided that a push spring is connected between the outer side of the multiple sets of baffles and the inner wall of the fixed sleeve. The push spring enables the baffles to automatically reset after adjustment, which enhances the flexibility and reliability of flow regulation and avoids the problem of adjustment mechanism failure after long-term use.

[0012] The present invention is further configured such that all of the multiple sets of baffles are configured as elastic plates. The design of the elastic plates can effectively prevent impurities in the foam from clogging the nozzles, improve the adaptability and service life of the device in harsh environments, and reduce maintenance costs.

[0013] The present invention is further provided with an inclined surface at the top of the push sleeve. The inclined surface design makes the push sleeve act more smoothly and evenly on the baffle plate, avoiding jamming or unevenness during the adjustment process, and improving the accuracy of flow regulation and ease of operation.

[0014] The present invention is further configured such that a guide block is fixedly provided on the outer side of the push sleeve, and a guide groove is provided on the inner side of the fixed sleeve. Multiple sets of guide blocks and guide grooves are provided and slidably connected. The slidable connection between multiple sets of guide blocks and guide grooves ensures the stability and accuracy of the push sleeve movement, prevents deviations during adjustment, and improves the structural strength and service life of the entire device.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a tunnel foam spray fire extinguishing device, which has the following beneficial effects:

[0017] 1. This device, by installing a storage tank and support structure on a trolley, and combining a rotatable mounting bracket and a fixed bracket on the top surface of the bracket, enables multi-angle adjustment of the nozzles. This solves the technical problem of traditional tunnel foam spray fire extinguishing devices being unable to flexibly adjust the spray angle according to the location of the fire source during fire fighting. The first motor drives the mounting bracket to rotate, enabling precise adjustment of the nozzle's lateral angle. Simultaneously, the design of the second motor driving the connecting rod and movable block to slide within the movable groove allows the fixed bracket to rotate along the mounting bracket, thereby adjusting the nozzle's longitudinal angle. This two-way angle adjustment mechanism allows the fire extinguishing device to accurately aim the foam spray at the fire source area based on the complex and ever-changing environmental factors such as the location of the fire source, the direction of fire spread, and the distribution of obstacles within the tunnel. This effectively avoids the fire extinguishing blind spots and uneven coverage problems caused by fixed-angle spraying, greatly improving fire extinguishing efficiency and success rate. It is particularly suitable for fire fighting operations in special locations such as tunnel corners, equipment compartments, or under vehicles.

[0018] 2. This device employs a flow regulation mechanism. By setting multiple sets of baffles within the fixed sleeve and coordinating with the rotating sleeve, screw, transmission plate, and push sleeve in a linked structure, it achieves precise control of the foam material spray flow rate. This solves the technical problem in existing foam spray fire extinguishing devices that cannot adjust the foam flow rate according to the fire scale. The operator only needs to rotate the rotating sleeve to drive the screw to rotate, and through the threaded engagement, the transmission plate drives the push sleeve to move. The push sleeve, through the guide block sliding along the guide groove, pushes multiple sets of baffles to tilt and compress the push spring, thereby changing the flow area between the baffles and achieving continuous adjustment of the foam spray flow rate. This design allows the fire extinguishing device to intelligently adjust the foam dosage according to different fire situations. For small fires, the foam dosage can be reduced to avoid resource waste and environmental pollution, while for large fires, the flow rate can be increased to ensure sufficient extinguishing agent coverage. This meets the precise fire extinguishing needs of various fires in tunnels and significantly improves the adaptability and economy of the fire extinguishing device.

[0019] 3. This device features a reasonable structural design and convenient operation. The pump and storage tank are connected to extract and transport foam material. A connecting pipe guides the foam material to the nozzle for atomization. Multiple sets of elastic baffles, combined with a push-spring structure, ensure precise flow adjustment while effectively preventing impurities in the foam material from clogging the nozzles, thus improving the reliability of the equipment. Furthermore, the inclined design at the top of the push sleeve makes the action of the push sleeve on the baffles more stable and uniform. The sliding connection between multiple guide blocks and guide grooves ensures the stability and accuracy of the push sleeve's movement, preventing deviations during adjustment. The entire device adopts a trolley-type design, facilitating rapid movement and deployment within tunnels and adapting to the firefighting needs of different areas within the tunnel. Especially in areas with complex airflow conditions, such as near ventilation shafts and entrances / exits, the dual adjustment of angle and flow rate ensures optimal firefighting effect, greatly enhancing the emergency response capability and safety level of tunnel fires. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a tunnel foam spray fire extinguishing device according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the fixing frame in this utility model;

[0022] Figure 3 This is a cross-sectional view of the fixed sleeve and the rotating sleeve in this utility model;

[0023] Figure 4 This is a schematic diagram of the push sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing sleeve in this utility model.

[0025] In the diagram: 1. Trolley; 2. Storage tank; 3. Bracket; 4. Mounting bracket; 5. Fixing bracket; 6. Nozzle; 7. Water pump; 8. Fixing sleeve; 9. Rotating sleeve; 10. Connecting pipe; 11. Baffle plate; 12. First motor; 13. Screw; 14. Transmission plate; 15. Push sleeve; 16. Second motor; 17. Linkage rod; 18. Movable block; 19. Movable groove; 20. Push spring; 21. Guide block; 22. Guide groove. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5A tunnel foam spray fire extinguishing device includes a trolley 1, a storage tank 2 fixedly mounted on the trolley 1, a bracket 3 fixedly mounted on the top of the storage tank 2, a mounting frame 4 rotatably mounted on the top surface of the bracket 3, a fixed frame 5 rotatably mounted on the mounting frame 4, a nozzle 6 fixedly mounted inside the fixed frame 5, a water pump 7 fixedly mounted on the trolley 1, the input end of the water pump 7 connected to the storage tank 2, a fixed sleeve 8 fixedly mounted on the bottom end of the nozzle 6, a rotating sleeve 9 rotatably mounted on the bottom end of the fixed sleeve 8, a connecting pipe 10 connecting the output end of the water pump 7 and the rotating sleeve 9, and multiple sets of baffles 11 fixedly mounted inside the fixed sleeve 8.

[0030] The bottom surface of the bracket 3 is fixedly equipped with a first motor 12. The output end of the first motor 12 is fixedly connected to the bottom surface of the mounting bracket 4. By directly connecting the first motor 12 to the bottom surface of the mounting bracket 4, the first motor 12 can drive the entire mounting bracket 4 to rotate 360 ​​degrees, realize the horizontal angle adjustment of the nozzle 6, and provide the ability to control the lateral coverage range.

[0031] A screw 13 is fixedly installed on the inner side of the rotating sleeve 9. A transmission plate 14 is threadedly connected to the outer wall of the screw 13. A push sleeve 15 is fixedly installed on the outer side of the transmission plate 14. When the rotating sleeve 9 is rotated manually, the screw 13 fixed on the inner side rotates synchronously. Through the principle of thread transmission, the transmission plate 14 moves along the axial direction of the screw 13, thereby driving the push sleeve 15 to make linear motion, forming a mechanical transmission system that converts rotational motion into linear motion.

[0032] A second motor 16 is fixedly mounted on the top surface of the mounting bracket 4. A connecting rod 17 is fixedly mounted on the output end of the second motor 16. A movable block 18 is rotatably connected to the top of the connecting rod 17. A movable groove 19 is opened inside the mounting bracket 5. The movable block 18 slides in the movable groove 19. The second motor 16 drives the connecting rod 17 to rotate. The connecting rod 17 drives the movable block 18 to make curved motion in the movable groove 19. Through this crank-slider mechanism, the mounting bracket 5 is tilted and rotated, realizing the vertical angle adjustment function of the nozzle 6.

[0033] Push springs 20 are connected between the outer side of multiple sets of baffles and the inner wall of the fixed sleeve 8. The push springs 20 provide the baffles with return force. When the external force disappears, the baffles can automatically return to their original position, ensuring that the flow regulation mechanism has good reset performance and stability, and preventing jamming after long-term use.

[0034] Multiple baffles are designed as elastic plates. The elastic plate design allows the baffles to undergo slight deformation when subjected to foam impact or impurity blockage, preventing rigid components from being damaged by impurities, while also enhancing the equipment's self-cleaning ability and service life.

[0035] The top of the push sleeve 15 is provided with an inclined surface. The inclined surface design utilizes the wedge principle. When the push sleeve 15 moves, the inclined surface can uniformly convert the axial force into a radial force that acts on the baffle plate, making the deflection angle of the baffle plate uniform and consistent, thus improving the accuracy and stability of flow regulation.

[0036] A guide block 21 is fixedly provided on the outer side of the push sleeve 15, and a guide groove 22 is provided on the inner side of the fixed sleeve 8. Multiple sets of guide blocks 21 and guide grooves 22 are provided and slidably connected. Multiple sets of guide blocks 21 and guide grooves 22 form a linear guide mechanism, which restricts the push sleeve 15 to move only along the axial direction and not to rotate, ensuring that the push sleeve 15 moves stably and accurately during the adjustment process and preventing deviation or jamming.

[0037] In this embodiment, during use, the foam material in the storage tank 2 is extracted by the water pump 7 and then transported to the nozzle 6 for atomization and spraying through the connecting pipe 10. The first motor 12 is started to drive the mounting frame 4 to rotate, thereby adjusting the lateral angle of the nozzle 6. The second motor 16 is started to drive the connecting rod 17 to rotate. The connecting rod 17 drives the movable block 18 to slide in the movable groove 19, thereby pushing the fixed frame 5 to rotate along the mounting frame 4, thereby adjusting the longitudinal angle of the nozzle 6.

[0038] More specifically, when it is necessary to adjust the spray flow rate of the foam material, rotating the rotating sleeve 9 drives the screw 13 to rotate. The screw 13 rotates and engages with the transmission plate 14 through a threaded connection, causing the transmission plate 14 to drive the push sleeve 15 to move. The push sleeve 15 slides along the guide groove 22 through multiple sets of guide blocks 21. The push sleeve 15 pushes multiple sets of baffles 11 to tilt and compresses the push spring 20, thereby changing the flow area between the multiple sets of baffles and thus adjusting the spray flow rate of the foam material.

[0039] In summary, during use or operation of the entire equipment: When in use, the water pump 7 extracts the foam material from the storage tank 2, and then transports it to the nozzle 6 for atomization and spraying through the connecting pipe 10. The first motor 12 is started to drive the mounting frame 4 to rotate, thereby adjusting the lateral angle of the nozzle 6. The second motor 16 is started to drive the connecting rod 17 to rotate, and the connecting rod 17 drives the movable block 18 to slide in the movable groove 19, thereby pushing the fixed frame 5 to rotate along the mounting frame 4, thereby adjusting the longitudinal angle of the nozzle 6.

[0040] When it is necessary to adjust the spray flow rate of the foam material, rotating the rotating sleeve 9 drives the screw 13 to rotate. The screw 13 rotates and engages with the transmission plate 14 through a thread, causing the transmission plate 14 to drive the push sleeve 15 to move. The push sleeve 15 slides along the guide groove 22 through multiple sets of guide blocks 21. The push sleeve 15 pushes multiple sets of baffles 11 to tilt and compresses the push spring 20, thereby changing the flow area between the multiple sets of baffles and thus adjusting the spray flow rate of the foam material.

[0041] Of all the solutions mentioned above, those involving connections between two components can be selected based on the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. These will not be elaborated on here. For all the fixed connections mentioned above, welding is the preferred option.

[0042] In all the solutions mentioned above, the operation of electrical components, unless otherwise specified, is controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and wiring connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here. The specific models and specifications of the electrical components involved in this solution need to be selected and determined according to the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, and therefore will not be described in detail.

[0043] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be described in detail in this utility model.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel foam spray fire extinguishing device, comprising a trolley (1), characterized in that: A storage tank (2) is fixedly mounted on the trolley (1). A bracket (3) is fixedly mounted on the top of the storage tank (2). A mounting frame (4) is rotatably mounted on the top surface of the bracket (3). A fixed frame (5) is rotatably mounted on the mounting frame (4). A nozzle (6) is fixedly mounted inside the fixed frame (5). A water pump (7) is fixedly mounted on the trolley (1). The input end of the water pump (7) is connected to the storage tank (2). A fixed sleeve (8) is fixedly mounted on the bottom end of the nozzle (6). A rotating sleeve (9) is rotatably mounted on the bottom end of the fixed sleeve (8). A connecting pipe (10) is connected between the output end of the water pump (7) and the rotating sleeve (9). A baffle plate (11) is fixedly mounted inside the fixed sleeve (8). Multiple sets of baffle plates (11) are provided.

2. The tunnel foam spray fire extinguishing device according to claim 1, characterized in that: The bottom surface of the bracket (3) is fixedly provided with a first motor (12), and the output end of the first motor (12) is fixedly connected to the bottom surface of the mounting bracket (4).

3. A tunnel foam spray fire extinguishing device according to claim 2, characterized in that: A screw (13) is fixedly provided on the inner side of the rotating sleeve (9), and a transmission plate (14) is threadedly connected to the outer wall of the screw (13). A push sleeve (15) is fixedly provided on the outer side of the transmission plate (14).

4. A tunnel foam spray fire extinguishing device according to claim 3, characterized in that: The mounting bracket (4) has a second motor (16) fixed on its top surface. The output end of the second motor (16) has a connecting rod (17) fixed on it. The top of the connecting rod (17) is rotatably connected to a movable block (18). The fixed bracket (5) has a movable groove (19) inside it. The movable block (18) slides in the movable groove (19).

5. A tunnel foam spray fire extinguishing device according to claim 4, characterized in that: multiple sets Push springs (20) are connected between the outer side of the baffle (11) and the inner wall of the fixed sleeve (8).

6. A tunnel foam spray fire extinguishing device according to claim 5, characterized in that: All of the baffles (11) are configured as elastic plates.

7. A tunnel foam spray fire extinguishing device according to claim 6, characterized in that: The top of the push sleeve (15) is provided with a slope.

8. A tunnel foam spray fire extinguishing device according to claim 7, characterized in that: The outer side of the push sleeve (15) is fixed with a guide block (21), and the inner side of the fixed sleeve (8) is provided with a guide groove (22). The guide block (21) and the guide groove (22) are provided in multiple sets and are slidably connected.

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