Water-driven compressed air foam fire extinguishing device
The water-driven compressed air foam fire extinguishing device utilizes water flow to drive the impeller and pump, eliminating the need for a power unit. This allows for the mixing and spraying of foam and high-pressure gas, solving the problem of existing devices being bulky and difficult to carry, and improving the convenience of fire extinguishing in complex environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-04-10
AI Technical Summary
Existing compressed air foam fire extinguishing devices are bulky due to their built-in power units, making them difficult to carry manually. Furthermore, fire trucks often cannot reach fire scenes on rugged mountain roads or in areas without roads, thus delaying fire suppression efforts.
The water-driven compressed air foam fire extinguishing device uses water flow to drive the impeller to rotate and drive the pump body to work, eliminating the need for a power unit, and realizing the mixing and spraying of foam and high-pressure gas to extinguish the fire.
The device is lightweight and compact, making it easy to carry and use. It can be used to extinguish fires in environments where fire trucks cannot reach, thus improving ease of use.
Smart Images
Figure CN224099864U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to foam fire extinguishing technical field, especially relate to a compressed air foam fire extinguishing device driven by water. BACKGROUND
[0002] The compressed air foam fire extinguishing foam, namely compressed air foam, is the homogeneous foam produced by water, foam liquid and air fully mixed under certain pressure, and the compressed air foam can quickly cover the fire source, isolate oxygen and achieve the effect of rapid fire extinguishing.
[0003] The existing compressed air foam device is mostly self-powered, so it is heavy and difficult to carry manually, and is mostly integrated on the fire truck. However, there are no good roads in the wild or in the forest, mostly rugged mountain roads, narrow paths or even no roads at all. The foam fire truck is large in size and difficult to pass through such road conditions, and is easy to get stuck or unable to reach the fire scene, thus delaying the fire extinguishing opportunity. Therefore, the compressed air foam fire extinguishing device driven by water is proposed to solve the problem. SUMMARY
[0004] The utility model discloses a compressed air foam fire extinguishing device driven by water, which aims at the problems existing in the prior art.
[0005] To achieve the above-mentioned purpose, the following technical scheme is adopted: a compressed air foam fire extinguishing device driven by water, comprising a driving assembly, a first pump body and a second pump body are installed on both sides of the driving assembly, the driving assembly comprises a mounting cover and a water flow cavity, a rotating shaft is arranged in the mounting cover, an impeller is arranged on the rotating shaft, the impeller is located in the water flow cavity, a connecting assembly is arranged on the driving end of the second pump body and the first pump body, the driving end of the second pump body and the driving end of the first pump body are connected together through the connecting assembly and the rotating shaft, a water inlet pipe and a drain pipe communicating with the water flow cavity are fixedly installed on the outer wall of the mounting cover, a shunt pipe is connected to the outer wall of the water inlet pipe, a mixing pipe is connected to the other end of the shunt pipe, a first connecting pipe is installed on the output end of the second pump body, a second connecting pipe is installed on the output end of the first pump body, and the first connecting pipe and the second connecting pipe communicate with the mixing pipe.
[0006] When water with certain pressure and flow rate enters the driving assembly from the water inlet pipe, the impeller will rotate under the impact of the water flow, thereby driving the first pump body and the second pump body to work simultaneously. Water, foam and high-pressure gas will finally enter the mixing pipe and mix, thereby forming compressed air foam fire extinguishing foam to be sprayed for fire extinguishing. Since the power device is cancelled, the device is lightened in weight, reduced in size, convenient to carry and use.
[0007] Further, the first pump body is a foam pump, and the second pump body is a gas pump.
[0008] Further, the impeller is located between the water inlet pipe and the water outlet pipe.
[0009] By adopting the above technical scheme, the water flow can drive the impeller to rotate.
[0010] Further, the input end of the first pump body is provided with a foam inlet pipe, and the side surface of the second pump body is further provided with an air suction port.
[0011] Further, the mounting cover is fixedly installed with a connecting cover on the side close to the first pump body, and the first pump body is fixedly installed on the inner wall of the connecting cover through bolts.
[0012] By adopting the above technical scheme, the first pump body is connected.
[0013] Further, the mounting cover is provided with a connecting groove on the side close to the second pump body, the side surface of the second pump body is fixedly installed with a positioning cover extending into the connecting groove, and the positioning cover is fixedly connected with the mounting cover through bolts.
[0014] By adopting the above technical scheme, the second pump body is connected.
[0015] Further, both ends of the rotating shaft extend to the outside of the mounting cover, the mounting cover is further provided with a sealing element in the inside, and the rotating shaft is rotatably connected with the inner wall of the sealing element.
[0016] By adopting the above technical scheme, the water is not easy to flow out to the outside of the mounting cover through the gap between the rotating shaft and the mounting cover, and the sealing performance of the structure is improved.
[0017] Further, the connecting assembly comprises two square clamping grooves respectively formed in both ends of the rotating shaft, and the driving end of the first pump body and the driving end of the second pump body are fixedly installed with clamping blocks extending into the corresponding square clamping grooves.
[0018] By adopting the above technical scheme, the driving end of the first pump body and the driving end of the second pump body are connected with the rotating shaft, and then the first pump body and the second pump body are driven to work simultaneously by the rotating shaft.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] The water-driven compressed air foam fire extinguishing device, when water with certain pressure and flow rate enters into the inside of the driving assembly from the water inlet pipe, the impeller will rotate under the impact of the water flow, and then drives the first pump body and the second pump body to work at the same time, water, foam and high-pressure gas will finally enter into the mixing pipe to mix, so as to form compressed air foam to be sprayed for fire extinguishing. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a schematic view of the main body of the utility model;
[0022] Figure 2 It is a sectional view of the driving assembly of the utility model;
[0023] Figure 3 It is another view of the water flow cavity of the utility model;
[0024] Figure 4 It is a schematic view of the connecting cover and the connecting assembly of the utility model;
[0025] Figure 5 It is a schematic view of the connecting groove and the positioning cover of the utility model.
[0026] In the drawing: 1, driving assembly; 101, mounting cover; 102, water flow cavity; 2, first pump body; 3, second pump body; 4, mixing pipe; 5, foam inlet pipe; 6, second connecting pipe; 7, water inlet pipe; 8, drain pipe; 9, shunt pipe; 10, first connecting pipe; 11, air inlet; 12, rotating shaft; 13, impeller; 14, sealing element; 15, square clamping groove; 16, clamping block; 17, connecting cover; 18, connecting groove; 19, positioning cover. DETAILED DESCRIPTION
[0027] The technical scheme of the utility model will be described clearly and completely in combination with the drawings in the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, but not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0028] In the description of the utility model, it needs to explain, the term "intermediate", "upper", "lower", "left", "right", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore cannot be understood as the limitation of the utility model.
[0029] As Figure 1 , Figure 2 and Figure 3 The specific scheme of the embodiment is as follows: a compressed air foam fire extinguishing device driven by water, comprising a driving assembly 1, a first pump body 2 and a second pump body 3 are installed on both sides of the driving assembly 1, the driving assembly 1 comprises a mounting cover 101 and a water flow cavity 102, a rotating shaft 12 is arranged in the mounting cover 101, a impeller 13 is arranged on the rotating shaft 12, the impeller 13 is located in the water flow cavity 102, the driving end of the second pump body 3 and the driving end of the first pump body 2 are provided with a connecting assembly, the driving end of the second pump body 3, the driving end of the first pump body 2 and the rotating shaft 12 are connected together through the connecting assembly, a water inlet pipe 7 and a drain pipe 8 communicating with the water flow cavity 102 are fixedly installed on the outer wall of the mounting cover 101, the outer wall of the water inlet pipe 7 is connected with a shunt pipe 9, the other end of the shunt pipe 9 is connected with a mixing pipe 4, a first connecting pipe 10 is installed on the output end of the second pump body 3, a second connecting pipe 6 is installed on the output end of the first pump body 2, the first connecting pipe 10 and the second connecting pipe 6 are in communication with the mixing pipe 4, an air bubble inlet pipe 5 is installed on the input end of the first pump body 2, the side surface of the second pump body 3 is further provided with an air inlet 11, and the impeller 13 is located between the water inlet pipe 7 and the drain pipe 8.
[0030] Among them, the first pump body 2 is a foam pump, the second pump body 3 is a gas pump, and the gas pump and the foam pump are driven to rotate to realize work, which is the prior art.
[0031] It needs to be noted here that the mounting cover 101 is the outer shell of the driving assembly 1 and the two protruding parts inside, the outer shell and the two protruding parts inside are integrally arranged, the opposite sides of the two protruding parts are both provided with bearings, the rotating shaft 12 is fixed on the inner walls of the two bearings, and the two ends of the rotating shaft 12 respectively penetrate the corresponding protruding parts and extend to the outside of the outer shell, and the impeller 13 is installed between the two protruding parts.
[0032] When water with certain pressure enters into the water flow cavity 102 through the water inlet pipe 7, the impeller 13 will rotate under the impact of water flow, and the rotating impeller 13 will drive the rotating shaft 12 to rotate, and then drive the first pump body 2 and the second pump body 3 to work at the same time. The working of the first pump body 2 will transport the foam in the external foam barrel to the mixing pipe 4 through the second connecting pipe 6, and the working of the second pump body 3 will transport the compressed air to the mixing pipe 4 through the first connecting pipe 10, so that the foam, water and compressed air can be mixed in the mixing pipe 4 to form compressed air foam, and then be sprayed for fire extinguishing.
[0033] In addition, since the device cancels the power device, the weight and volume can be reduced, and the device is convenient to carry and use. The device can be used with the existing fire truck or garden water tank truck, and can also be used with the hand pump or portable water pump in the case that the fire truck cannot reach, so that the convenience of use of the device is greatly improved.
[0034] It should be noted that the surfaces of the shunt pipe 9, the second connecting pipe 6 and the first connecting pipe 10 are provided with one-way control valves, so that the mixed compressed air foam can only be discharged through the mixing pipe 4.
[0035] Please refer to Figure 4 and Figure 5 In the embodiment, the connecting cover 17 is fixedly installed on the side of the mounting cover 101 close to the first pump body 2, the first pump body 2 is fixedly installed on the inner wall of the connecting cover 17 through bolts, the connecting groove 18 is formed on the side of the mounting cover 101 close to the second pump body 3, the positioning cover 19 is fixedly installed on the side of the second pump body 3 and extends into the connecting groove 18, and the positioning cover 19 is fixed to the mounting cover 101 through bolts.
[0036] The connecting cover 17, the connecting groove 18 and the positioning cover 19 are arranged, so that the first pump body 2 and the second pump body 3 can be conveniently connected and fixed with the driving assembly 1, and the first pump body 2 and the second pump body 3 can be conveniently disassembled or maintained later.
[0037] It should be noted that the first connecting pipe 10 and the second connecting pipe 6 can be connected with the mixing pipe 4 in a flange connection mode or a threaded connection mode, so that the first pump body 2 and the second pump body 3 can be conveniently disassembled.
[0038] Please refer to Figure 4 In the embodiment, the two ends of the rotating shaft 12 extend to the outside of the mounting cover 101, the sealing member 14 is further arranged in the mounting cover 101, and the rotating shaft 12 is rotatably connected with the inner wall of the sealing member 14.
[0039] The sealing member 14 is arranged, so that water is not easy to flow to the outside of the mounting cover 101 through the gap between the rotating shaft 12 and the mounting cover 101, and the sealing property of the driving assembly 1 is improved.
[0040] It should be noted here that the sealing member 14 can be a sealing sleeve or a sealing ring, and the sealing member 14 is arranged at the gap between the two protruding portions and the rotating shaft 12 in the mounting cover 101, or can be arranged only at the end of the gap between the protruding portions and the rotating shaft 12, so as to ensure the sealing effect.
[0041] Please refer to Figure 4 and Figure 5 In the embodiment, the connecting assembly includes two square clamping grooves 15 respectively arranged at two ends of the rotating shaft 12, and the drive end of the first pump body 2 and the drive end of the second pump body 3 are both fixedly provided with clamping blocks 16 extending into the corresponding square clamping grooves 15.
[0042] The clamping blocks 16 and the square clamping grooves 15 are arranged, so that the drive end of the first pump body 2 and the drive end of the second pump body 3 are connected with the rotating shaft 12, thereby achieving that the first pump body 2 and the second pump body 3 can work simultaneously when the rotating shaft 12 rotates.
[0043] The working principle of the above embodiment is as follows: the water hose and the spray gun are connected at the end of the mixing pipe 4, the water inlet pipe 7 of the device is connected with the water pump on the fire truck, the water outlet pipe 8 is connected to the inside of the water tank, and finally the foam inlet pipe 5 of the first pump body 2 is connected to the inside of the foam barrel, the water pump on the fire truck is started, part of the water will enter the inside of the mixing pipe 4 through the shunt pipe 9 when the water enters the inside of the water inlet pipe 7, and the impeller 13 will rotate under the impact of the water flow when the water with a certain pressure enters the flow cavity 102 through the water inlet pipe 7, the rotating shaft 12 will be driven to rotate when the impeller 13 rotates, thereby driving the first pump body 2 and the second pump body 3 to work simultaneously, the first pump body 2 will transport the foam in the foam barrel to the mixing pipe 4 through the second connecting pipe 6, and the second pump body 3 will transport the compressed air to the mixing pipe 4 through the first connecting pipe 10, so that the foam, water and compressed air can be mixed in the mixing pipe 4 to form compressed air and foam, thereby being sprayed for fire extinguishing. Since the device cancels the power device, the weight and the volume of the device can be reduced, and the device is convenient to carry and use. The device can be used with the existing fire truck or water tank truck, and can be used with the hand lift pump or portable water pump in the case that the fire truck is difficult to reach, so that the convenience of use of the device is greatly improved.
[0044] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A compressed air foam extinguishing apparatus driven by water, characterized in that The utility model provides a kind of foam pump, including drive assembly, first pump body and second pump body are respectively installed on both sides of the drive assembly, the drive assembly includes installation cover and water flow cavity, the inside of the installation cover is equipped with rotating shaft, the rotating shaft is equipped with impeller, the impeller is located in the inside of water flow cavity, the drive end of the second pump body and first pump body is equipped with connecting assembly, the drive end of the second pump body, the drive end of first pump body is connected together with rotating shaft by connecting assembly, the outer wall of the installation cover is fixedly installed with the water inlet pipe and drain pipe being communicated with water flow cavity, the outer wall of the water inlet pipe is connected with shunt pipe, the other end of the shunt pipe is connected with mixing pipe, the output end of the second pump body is installed with first connecting pipe, the output end of the first pump body is installed with second connecting pipe, and the first connecting pipe and second connecting pipe are communicated with mixing pipe.
2. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The first pump body is a foam pump, and the second pump body is a gas pump.
3. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The impeller is located between the water inlet pipe and the drain pipe.
4. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The input end of the first pump body is installed with an air inlet pipe, and the side of the second pump body is further provided with an air inlet.
5. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The side of the installation cover close to the first pump body is fixedly installed with a connecting cover, and the first pump body is fixedly installed on the inner wall of the connecting cover by bolts.
6. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The side of the installation cover close to the second pump body is provided with a connecting groove, and the side of the second pump body is fixedly installed with a positioning cover extending into the connecting groove, and the positioning cover is fixedly connected with the installation cover by bolts.
7. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: Both ends of the rotating shaft extend to the outside of the installation cover, and the inside of the installation cover is further provided with a sealing element, and the rotating shaft is rotatably connected with the inner wall of the sealing element.
8. A compressed air foam extinguishing apparatus driven by water according to claim 1, characterized in that: The connecting assembly includes two square clamping grooves respectively arranged at both ends of the rotating shaft, and the drive end of the first pump body and the drive end of the second pump body are fixedly installed with clamping blocks extending into the corresponding square clamping grooves.