Mobile composite fire extinguishing device

Abstract

This utility model discloses a mobile composite fire extinguishing device, belonging to the technical field of fire extinguishing devices. It includes a gas source component, a foam unit, a dry powder unit, a multi-purpose spray gun, and a foam generating chamber. The gas source component is connected to the foam unit, dry powder unit, and multi-purpose spray gun via pipelines. The foam unit is connected to the foam generating chamber, the foam generating chamber is connected to the multi-purpose spray gun, and the dry powder unit is connected to the multi-purpose spray gun. This invention solves the problem that existing foam fire extinguishing equipment has a single function, can only use one extinguishing agent, and cannot cope with complex and changing fire environments, resulting in reduced fire extinguishing efficiency and even the potential for exacerbating the fire due to the selection of the wrong extinguishing agent. This utility model, by setting up a gas source component, a multi-purpose spray gun, a foam unit, and a dry powder unit, allows for rapid selection of foam or dry powder extinguishing modes, and is suitable for various fire types such as Class A solid fires, Class B liquid fires, and Class E electrical fires, avoiding the limitations of traditional single-extinguishing agents.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing device technology, specifically to a mobile composite fire extinguishing device. Background Technology

[0002] With the development of modern industry and the acceleration of urbanization, fire risks are increasing, and fire types are becoming more diversified. Foam fire extinguishing equipment is now widely used due to its advantages such as being environmentally friendly, effective, and easy to use.

[0003] Foam fire extinguishing equipment generally adopts positive pressure compressed air foam technology. Compared with traditional negative pressure foam technology, compressed air foam generated by positive pressure has the characteristics of finer and more uniform foam structure and higher foam stability, which can greatly improve the efficiency of fire extinguishing and foam decontamination.

[0004] However, different types of fires require different extinguishing agents for effective extinguishing. Existing foam fire extinguishing equipment has a single function and can only use one type of extinguishing agent. When faced with complex and ever-changing fire environments, it often cannot respond flexibly, resulting in reduced fire extinguishing efficiency, and may even exacerbate the fire by selecting the wrong extinguishing agent.

[0005] Therefore, how to provide a mobile composite fire extinguishing device that overcomes the shortcomings of existing technologies is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] Therefore, this utility model provides a mobile composite fire extinguishing device to solve the problem that existing foam fire extinguishing equipment has a single function and can only use one type of extinguishing agent, which cannot cope with complex and ever-changing fire environments, resulting in reduced fire extinguishing efficiency, and may even exacerbate the fire due to the selection of the wrong extinguishing agent.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model discloses a mobile composite fire extinguishing device, including an air source component, a foam unit, a dry powder unit, a multi-purpose spray gun, and a foam generating chamber. The air source component is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun through pipelines. The foam unit is connected to the foam generating chamber, the foam generating chamber is connected to the multi-purpose spray gun, and the dry powder unit is connected to the multi-purpose spray gun.

[0009] Furthermore, the foam unit includes a water tank, a water pump, a foam concentrate tank, a concentrate pump, and a foam proportioning valve. The air source assembly is connected to the water pump and the concentrate pump via pipelines. The water tank is connected to the input end of the water pump via a pipeline, and the output end of the water pump is connected to the foam generating chamber via a pipeline. The foam concentrate tank is connected to the input end of the concentrate pump via a pipeline, and the output end of the concentrate pump is connected to the foam generating chamber via a pipeline. A foam proportioning valve is installed on the pipeline connecting the concentrate pump and the foam generating chamber. Both the water tank and the foam concentrate tank are equipped with vent holes.

[0010] Furthermore, the dry powder unit includes a dry powder tank and a dry powder switch. The air source assembly is connected to the dry powder tank via a pipeline. The dry powder tank is connected to the multi-purpose spray gun via a pipeline. A dry powder switch is provided on the pipeline connecting the dry powder tank and the multi-purpose spray gun.

[0011] Furthermore, a first proportional regulating valve and a one-way valve are provided on the pipeline connecting the air source component and the multi-purpose spray gun.

[0012] Furthermore, a second proportional regulating valve is provided on the pipeline connecting the gas source component and the foam unit.

[0013] Furthermore, a third proportional regulating valve and a second check valve are provided on the pipeline connecting the gas source component and the dry powder tank.

[0014] Furthermore, the gas source assembly includes a high-pressure gas cylinder group, a pressure reducing valve, and a three-way valve. The output end of the high-pressure gas cylinder group is connected to the pressure reducing valve, the pressure reducing valve is connected to the input end of the three-way valve, and the output end of the three-way valve is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun through pipelines.

[0015] Furthermore, a medium pressure gauge is connected in parallel to the output terminal of the one-way valve three.

[0016] Furthermore, both the water pump and the raw liquid pump are diaphragm air pumps.

[0017] Furthermore, the top of the water tank and the foam concentrate tank are respectively provided with filling ports, which are 65mm internal snap-fit ​​interfaces. The bottom of the water tank and the foam concentrate tank are welded with a nine-square square stainless steel bracket to enhance the stability of the device. The bottom of the side wall of the water tank and the foam concentrate tank are respectively provided with drain ports, which can be used to drain liquid at the middle door of the vehicle without penetrating the vehicle floor through the stainless steel bracket.

[0018] This utility model has the following advantages:

[0019] This invention, by incorporating an air source component, a multi-purpose spray gun, a foam unit, and a dry powder unit, allows for rapid selection of either foam or dry powder extinguishing modes. It is suitable for various fire types, including Class A solid fires, Class B liquid fires, and Class E electrical fires, avoiding the limitations of traditional single extinguishing agents. Furthermore, it possesses strong resistance to reignition; the foam extinguishing agent can persistently cover the surface of the burning material to prevent reignition, while the dry powder extinguishing agent can rapidly inhibit chemical chain reactions, making it suitable for electrical or metal fires. The combination of both enhances overall fire extinguishing efficiency.

[0020] By setting up foam units, the mixing ratio of foam concentrate and water can be precisely controlled, improving the stability of fire extinguishing foam, making the foam finer, and the mixing ratio can be adjusted to adapt to various foam concentrates.

[0021] By setting up an air source component and a dry powder unit, the dry powder can be extruded to form a compressed air dry powder system, which can work independently without relying on vehicle power or other power systems. At the same time, the structure is simplified, its size is reduced, and it can be flexibly mounted on various types of vehicles for mobile transport or pushed within a certain range, greatly improving its mobility. Attached Figure Description

[0022] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Figure 1 A schematic diagram of the structure of the mobile composite fire extinguishing device provided by this utility model;

[0025] Figure 2 A schematic diagram of the gas source component structure provided by this utility model;

[0026] Figure 3 A perspective view of the mobile composite fire extinguishing device provided by this utility model;

[0027] Figure 4 The structural diagram of the mobile composite fire extinguishing device provided by this utility model.

[0028] In the diagram: 1. Gas source assembly; 11. High-pressure gas cylinder group; 12. Pressure reducing valve; 13. One-way valve three; 14. Medium pressure gauge; 2. Multi-purpose spray gun; 3. Foam generation chamber; 41. Water tank; 42. Water pump; 43. Foam concentrate tank; 44. Concentrate pump; 45. Foam proportioning valve; 46. Vent; 47. Filling port; 48. Stainless steel bracket; 49. Drain port; 51. Dry powder tank; 52. Dry powder switch; 6. First proportioning valve; 7. One-way valve one; 8. Second proportioning valve; 9. Third proportioning valve; 10. One-way valve two. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Please refer to Figures 1-4 The present invention discloses a mobile composite fire extinguishing device, which consists of five parts, as follows: Figure 1 As shown, it includes an air source assembly 1, a foam unit, a dry powder unit, a multi-purpose spray gun 2, and a foam generating chamber 3. The air source assembly 1 is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun 2 through pipelines. The foam unit is connected to the foam generating chamber 3, the foam generating chamber 3 is connected to the multi-purpose spray gun 2, and the dry powder unit is connected to the multi-purpose spray gun 2.

[0031] In this embodiment, this application can be flexibly mounted on various types of vehicles for vehicle-mounted use or propelled within a certain range. It can compensate for the limited fire-fighting capabilities of small fire extinguishers and, due to its flexibility and mobility, serve as an effective supplement to large fire-fighting equipment. The connecting pipes and methods for each part are common fire-fighting system piping connection methods in the prior art, and those skilled in the art can connect them as needed.

[0032] The air source assembly 1 provides a high-pressure air source. Compared with traditional negative pressure foam technology, compressed air foam generated by positive pressure has a finer, more uniform foam structure and higher foam stability, which can greatly improve the efficiency of fire extinguishing and foam decontamination. The foam unit provides the foam extinguishing agent and can adjust the mixing ratio of the foam extinguishing agent as needed. The dry powder unit provides the dry powder extinguishing agent.

[0033] By setting up the gas source component 1, multi-purpose spray gun 2, foam unit, and dry powder unit, the foam or dry powder extinguishing mode can be quickly selected. It is suitable for various fire types such as Class A solid fires, Class B liquid fires, and Class E electrical fires, avoiding the limitations of traditional single extinguishing agents. At the same time, it has a strong ability to resist reignition. The foam extinguishing agent can cover the surface of the burning material for a long time to prevent reignition; the dry powder extinguishing agent can quickly inhibit the chemical chain reaction and is suitable for electrical or metal fires. The combination of the two improves the overall fire extinguishing efficiency.

[0034] Preferably, a first proportional regulating valve 6 and a one-way valve 7 are provided on the pipeline connecting the air source component 1 and the multi-purpose spray gun 2.

[0035] like Figure 1 As shown, the foam unit includes a water tank 41, a water pump 42, a foam concentrate tank 43, a concentrate pump 44, and a foam proportioning valve 45. The air source assembly 1 is connected to the water pump 42 and the concentrate pump 44 via pipelines. The water tank 41 is connected to the input end of the water pump 42 via a pipeline, and the output end of the water pump 42 is connected to the foam generating chamber 3 via a pipeline. The foam concentrate tank 43 is connected to the input end of the concentrate pump 44 via a pipeline, and the output end of the concentrate pump 44 is connected to the foam generating chamber 3 via a pipeline. A foam proportioning valve 45 is installed on the pipeline connecting the concentrate pump 44 and the foam generating chamber 3. Both the water tank 41 and the foam concentrate tank 43 have vent holes 46 inside. Preferably, a foaming net is installed inside the foam generating chamber 3. Preferably, both the water pump 42 and the concentrate pump 44 are diaphragm air pumps.

[0036] In this embodiment, the water tank 41 and the foam concentrate tank 43 store water and foam concentrate respectively. Two diaphragm air pumps are cleverly used to drive the compressed air source to draw water and foam concentrate respectively and mix them in the foam generation chamber 3. The advantage of this is that, through the obstruction of the water pump 42 and the concentrate pump 44, this mixing prevents the liquid in the water and foam concentrate tank 43 from mixing due to the same suction port, making the flow rate of the generated water and foam more stable.

[0037] A foam proportioning valve 45 is installed on the connecting pipeline between the stock solution pump 44 and the foam generating chamber 3. This valve can precisely control the mixing ratio of foam stock solution and water. Utilizing positive pressure compressed air foam technology, the foam generating chamber 3 has a built-in foaming net. Together with the foam proportioning valve 45, this ensures uniform foam mixing, a fine structure, and coverage and stability far exceeding traditional negative pressure foam systems. Preferably, the foam proportioning valve 45 is a mechanical rotary proportional control valve with six positions: 0.6%, 0.8%, 1%, 3%, 6%, and OFF.

[0038] like Figure 3 , Figure 4As shown, the top of the water tank and the foam concentrate tank are respectively provided with filling ports 47, which are 65mm internal snap-fit ​​interfaces. The bottom of the water tank and the foam concentrate tank are welded with a nine-square square stainless steel bracket 48 to enhance the stability of the device. The bottom of the side wall of the water tank and the foam concentrate tank are respectively provided with drain ports 49. The liquid can be drained at the middle door of the vehicle without penetrating the vehicle floor through the stainless steel bracket 48.

[0039] The device described in this application is convenient to install on a vehicle. Both the water tank 41 and the foam concentrate tank 43 are equipped with a filling port 47, a vent 46, and a drain port 49. The filling port 47 is used to add water or foam concentrate to the water tank 41 and the foam concentrate tank 43. The vent 46 serves two purposes: one is to maintain the internal and external air pressure balance in the closed tank, and the other is to overflow. When the liquid level exceeds the set height, the excess liquid is discharged through the overflow port. The drain port 49 is used to connect to the next device through a pipeline. The vent 46 and drain port 49 of the water tank 41 and the foam concentrate tank 43 are located on the same side of the rear end of the device. During installation, there is no need to drill holes in the vehicle chassis for drainage; the water can flow out smoothly directly through the vehicle's middle door. This makes the installation, water filling, overflow, and drainage of the device more convenient, and the vehicle body has better sealing and insulation.

[0040] It is worth noting that in the past, the vent 46 and drain port 49 of such foam fire extinguishing devices were located at the bottom of the device. When installed on a vehicle, they had to penetrate the vehicle floor to achieve the corresponding overflow and drainage functions. In this device, the vent 46 and drain port 49 are located on one side of the top of the water tank 41 and the foam concentrate tank 43 and connected together, so that drainage, overflow functions can be achieved at the vehicle's middle door without penetrating the vehicle floor.

[0041] This utility model is robust and durable. The bottom is reinforced with a nine-grid square stainless steel tube layout, ensuring the water tank 41 and foam concentrate tank 43 remain undeformed even after long-term use. The stainless steel tube frame elevates the water tank 41 and foam concentrate tank 43, making it easier to install the vent 46 and drain port 49. The drain port 49 can be installed close to the bottom plate of the water tank 41 and concentrate tank, resulting in cleaner drainage. The drain port 49 of the water tank 41 and foam concentrate tank 43 has been moved from the bottom to the rear side, eliminating the need for a support frame during installation; it can be placed directly into position. The vent 46 of the water tank 41 and foam concentrate tank 43, after connection, is placed on the rear side of the device, close to the vehicle's middle door, facilitating the direct removal of overflowing liquid outside the vehicle. The filling port 47 of the water tank 41 and foam concentrate tank 43 uses a 65mm internal snap-fit ​​interface, allowing for rapid water and liquid replenishment using fire hydrants or fire trucks. This device can be equipped with pulleys at the bottom to move within a certain area, or it can be mounted on various types of vehicles to move within a larger area. It can be widely used in firefighting.

[0042] Preferably, a second proportional regulating valve 8 is installed on the pipeline connecting the gas source component 1 and the foam unit. The second proportional regulating valve 8 is used to adjust the proportion of the mixed extinguishing concentrate to adapt it to various types of foam concentrates.

[0043] like Figure 1 As shown, the dry powder unit includes a dry powder tank 51 and a dry powder switch 52. The air source assembly 1 is connected to the dry powder tank 51 through a pipeline. The dry powder tank 51 is connected to the multi-purpose spray gun 2 through a pipeline. The dry powder switch 52 is installed on the pipeline connecting the dry powder tank 51 and the multi-purpose spray gun 2.

[0044] In this embodiment, the air source component 1 is used to press out the dry powder for use in the air dry powder foam system, so that it does not rely on the vehicle power or other power systems and can work independently. At the same time, the compressed air dry powder foam system is simplified, its size is reduced, and it can be flexibly mounted on various types of vehicles for mobile use or pushed on a cart within a certain range, greatly improving its mobility.

[0045] Preferably, a third proportional regulating valve 9 and a one-way valve 10 are provided on the pipeline connecting the air source assembly 1 and the dry powder tank 51. The third proportional regulating valve 9 adjusts the air volume entering the dry powder tank 51, so that the amount of dry powder entering the multi-purpose spray gun 2 can be adjusted to suit various fire situations.

[0046] like Figure 2 As shown, the gas source assembly 1 includes a high-pressure gas cylinder group 11, a pressure reducing valve 12, and a one-way valve 13. The output end of the high-pressure gas cylinder group 11 is connected to the pressure reducing valve 12, the pressure reducing valve 12 is connected to the input end of the one-way valve 13, and the output end of the one-way valve 13 is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun 2 through pipelines.

[0047] In this embodiment, the air source assembly 1 includes a high-pressure air cylinder group 11 for storing high-pressure compressed air. The high-pressure air cylinder group 11 can reduce the pressure of the stored compressed air up to 30MPa through the pressure reducing valve 12 to generate a 0.8MPa compressed air source.

[0048] Preferably, a medium pressure gauge 14 is connected in parallel to the output of the one-way valve 13. By setting the medium pressure gauge 14, the gas pressure value provided by the gas source assembly 1 to the foam unit, the dry powder unit, and the multi-purpose spray gun 2 can be obtained.

[0049] This invention uses a high-pressure gas cylinder group 11, consisting of multiple gas cylinders storing compressed air, as a power source and a diaphragm air pump as a power actuator to generate compressed air foam. After mixing with dry powder, dry powder foam is generated and sprayed. The compressed air generated by the high-pressure gas cylinder group 11 is depressurized by the pressure reducing valve 12 to generate the total system air source. The total system air source is divided into three parts. One part supplies the water pump 42 and the raw material pump 44 to work. According to the mixing ratio set by the device, the fire extinguishing raw material stored in the foam raw material tank 43 and the water stored in the water tank 41 are extracted respectively. The raw material and water are mixed by the water pump 42 and the raw material pump 44 in proportion and then enter the foam generating chamber 3. A part of the total system air source enters the multi-purpose spray gun 2 after passing through the first proportion regulating valve 6. A part of the total system air source enters the dry powder tank 51 after passing through the third proportion regulating valve 9. The dry powder is blown into the multi-purpose spray gun 2 and fully mixed with the mixture extracted by the diaphragm air pump. The mixed water, foam raw material, dry powder and compressed air enter the multi-purpose spray gun 2 for spraying.

[0050] The usage process of this utility model embodiment is as follows:

[0051] During operation, the high-pressure gas in the high-pressure gas cylinder group 11 is reduced in pressure by the pressure reducing valve 12, and the resulting medium-pressure gas source serves as the main compressed gas source. The main compressed gas source is divided into four paths through the manifold: one path supplies water pump 42 and raw material pump 44 through the second proportional regulating valve 8; another path enters the multi-purpose spray gun 2 after passing through the first proportional regulating valve 6; another path enters the medium-pressure gauge 14; and the third path enters the dry powder tank 51 through the third proportional regulating valve 9. This allows for the separate application of foam fire extinguishing, dry powder fire extinguishing, or simultaneous application of dry powder and foam fire extinguishing. One medium-pressure gas source output from the gas source assembly 1 drives the raw material pump 44 and water pump 42 to operate, drawing water from the foam raw material according to the set ratio. Water and raw materials are drawn from tank 43 and water tank 41 and premixed. The mixing ratio of water and foam raw materials in foam raw material tank 43 is adjusted by foam ratio regulating valve 45 to make it suitable for different types of fire extinguishing raw materials. The mixture is then introduced into foam generating chamber 3. One branch of the main compressed air source is connected to multi-purpose spray gun 2. The amount of mixed gas can be adjusted by first ratio regulating valve 6, thereby adjusting the density of foam. One branch of the main compressed air source enters dry powder tank 51 through third ratio regulating valve 9. The dry powder is sent to the dry powder channel of multi-purpose spray gun 2 by air pressure. The generated dry powder, foam, and dry powder and foam are sprayed simultaneously through the two spray nozzles of multi-purpose spray gun 2.

[0052] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A mobile composite fire extinguishing device, characterized in that, It includes an air source assembly (1), a foam unit, a dry powder unit, a multi-purpose spray gun (2), and a foam generating chamber (3). The air source assembly (1) is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun (2) through pipelines. The foam unit is connected to the foam generating chamber (3), the foam generating chamber (3) is connected to the multi-purpose spray gun (2), and the dry powder unit is connected to the multi-purpose spray gun (2).

2. The mobile composite fire extinguishing device as described in claim 1, characterized in that, The foam unit includes a water tank (41), a water pump (42), a foam concentrate tank (43), a concentrate pump (44), and a foam proportioning valve (45). The air source assembly (1) is connected to the water pump (42) and the concentrate pump (44) through pipelines. The water tank (41) is connected to the input end of the water pump (42) through a pipeline. The output end of the water pump (42) is connected to the foam generating chamber (3) through a pipeline. The foam concentrate tank (43) is connected to the input end of the concentrate pump (44) through a pipeline. The output end of the concentrate pump (44) is connected to the foam generating chamber (3) through a pipeline. A foam proportioning valve (45) is provided on the pipeline connecting the concentrate pump (44) and the foam generating chamber (3). Both the water tank (41) and the foam concentrate tank (43) are provided with vent holes (46).

3. The mobile composite fire extinguishing device as described in claim 1, characterized in that, The dry powder unit includes a dry powder tank (51) and a dry powder switch (52). The air source assembly (1) is connected to the dry powder tank (51) through a pipeline. The dry powder tank (51) is connected to the multi-purpose spray gun (2) through a pipeline. A dry powder switch (52) is provided on the pipeline connecting the dry powder tank (51) and the multi-purpose spray gun (2).

4. The mobile composite fire extinguishing device as described in claim 1, characterized in that, The pipeline connecting the air source assembly (1) and the multi-purpose spray gun (2) is equipped with a first proportional regulating valve (6) and a one-way valve (7).

5. The mobile composite fire extinguishing device as described in claim 1, characterized in that, A second proportional regulating valve (8) is provided on the pipeline connecting the gas source component (1) and the foam unit.

6. The mobile composite fire extinguishing device as described in claim 3, characterized in that, A third proportional regulating valve (9) and a one-way valve (10) are provided on the pipeline connecting the gas source component (1) and the dry powder tank (51).

7. The mobile composite fire extinguishing device as described in claim 1, characterized in that, The gas source assembly (1) includes a high-pressure gas cylinder group (11), a pressure reducing valve (12), and a one-way valve (13). The output end of the high-pressure gas cylinder group (11) is connected to the pressure reducing valve (12), the pressure reducing valve (12) is connected to the input end of the one-way valve (13), and the output end of the one-way valve (13) is connected to the foam unit, the dry powder unit, and the multi-purpose spray gun (2) through pipelines.

8. The mobile composite fire extinguishing device as described in claim 7, characterized in that, A medium pressure gauge (14) is connected in parallel to the output end of the one-way valve three (13).

9. The mobile composite fire extinguishing device as described in claim 2, characterized in that, Both the water pump (42) and the raw liquid pump (44) are diaphragm air pumps.

10. The mobile composite fire extinguishing device as described in claim 2, characterized in that, The top of the water tank (41) and the foam raw material tank (43) are respectively provided with filling ports (47), and the filling ports (47) are 65mm internal snap-fit ​​interfaces. The bottom of the water tank (41) and the foam raw material tank (43) are welded with a nine-square square stainless steel bracket (48) to enhance the stability of the device. The bottom of the side wall of the water tank (41) and the foam raw material tank (43) are respectively provided with drain ports (49). The drain can be achieved at the middle door of the vehicle without penetrating the vehicle floor through the stainless steel bracket (48).

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