Portable foam fire extinguishing equipment

Abstract

The utility model relates to the technical field of fire fighting equipment, and discloses portable foam fire extinguishing equipment which comprises a case, a control panel, and a mixing module, a hydraulic driving module, a gas path driving module and a fire extinguishing agent supply module which are integrated in the case, the case is provided with a coupling water inlet interface, a coupling water outlet interface, a foam external suction port and a coupling water return interface; the mixing module is communicated with the coupling water inlet interface and the coupling water outlet interface; the fire extinguishing agent supply module is connected with the mixing module and used for supplying a foam fire extinguishing agent; the gas path driving module is connected with the fire extinguishing agent supply module and the mixing module and used for providing compressed air for the mixing module and the fire extinguishing agent supply module. The hydraulic driving module communicates with the coupling water inlet connector and the coupling water return connector and is used for converting hydraulic potential energy into mechanical energy for driving the gas circuit driving module to work. The portable foam fire extinguishing equipment disclosed by the utility model is good in portability and large in fire extinguishing range.

Description

Technical Field

[0001] The present application belongs to the technical field of fire-fighting equipment, and specifically relates to a portable foam fire-fighting equipment. Background Art

[0002] Compressed air fire extinguishing equipment has the remarkable characteristics of fast fire extinguishing speed, small water consumption at the fire scene, strong foam stability, environmental protection and pollution-free, heat insulation and radiation protection, and prevention of re-ignition.

[0003] The main power source of existing compressed air fire extinguishing equipment relies on gasoline engines, which makes the entire compressed air fire extinguishing equipment large in size and heavy in weight. It needs to be fixed on a fire truck or fixed in a specific area for use. It cannot be carried to different fire extinguishing areas, resulting in a limited fire extinguishing range. At the same time, the operation of the gasoline engine will also cause environmental pollution problems. Utility Model Content

[0004] The purpose of this application is to provide a portable foam fire extinguishing equipment to solve the problems of existing fire extinguishing equipment being large in size and heavy in weight, having a limited fire extinguishing range due to fixed use, and causing environmental pollution during operation.

[0005] In order to achieve the above objectives, the present application provides a portable foam fire extinguishing device, comprising:

[0006] A chassis, wherein the chassis is provided with a coupled water inlet interface, a coupled water outlet interface, a foam external suction port and a coupled water return interface;

[0007] A mixing module is provided in the chassis and is connected to the coupled water inlet interface and the coupled water outlet interface respectively;

[0008] a fire extinguishing agent supply module, disposed in the chassis and connected to the mixing module, for supplying foam fire extinguishing agent;

[0009] an air circuit drive module, disposed in the chassis and connected to the fire extinguishing agent supply module and the mixing module, respectively, for providing compressed air to the mixing module and the fire extinguishing agent supply module; and

[0010] A hydraulic drive module is arranged in the chassis and connected to the coupled water inlet interface and the coupled water return interface. The hydraulic drive module is used to convert hydraulic potential energy into mechanical energy to drive the air circuit drive module to work.

[0011] As a further improvement of the above technical solution:

[0012] In some embodiments, the coupled water inlet interface, the coupled water outlet interface, and the coupled water return interface adopt a fire protection interface structure.

[0013] In some embodiments, a lifting handle is provided on the top surface of the chassis.

[0014] In some embodiments, the portable foam fire extinguishing equipment further includes an air circuit control module disposed in the chassis, the air circuit control module being connected to the air circuit drive module, and the air circuit control module being further connected to the mixing module, the fire extinguishing agent supply module, and the hydraulic drive module respectively through control air pipes;

[0015] The air circuit drive module is used to provide compressed air for control to the air circuit control module.

[0016] In some embodiments, a first one-way valve and a spare gas storage container are further provided between the gas circuit control module and the gas circuit drive module;

[0017] Wherein, the cut-off direction of the first one-way valve is opposite to the air flow conveying direction between the air path control module and the air path drive module.

[0018] In some embodiments, the chassis is further provided with a discharge port;

[0019] The fire extinguishing agent supply module further includes a fourth shut-off valve and a pipeline discharge device connected in sequence via a discharge pipeline, the discharge pipeline being connected to a feed delivery pipeline in the fire extinguishing agent supply module, the pipeline discharge device being located at an end of the discharge pipeline and connected to the discharge port;

[0020] Wherein, the fourth stop valve is controlled by air flow and is connected to the air path control module through the control air pipe.

[0021] In some embodiments, the fire extinguishing agent supply module further includes a spare storage container for storing the fire extinguishing agent, and the spare storage container is disposed on the feed delivery pipeline, or the spare storage container is disposed on the discharge pipeline and upstream of the fourth shut-off valve.

[0022] In some embodiments, the mixing module includes a mixing device having a mixing chamber. The mixing chamber is a single-chamber structure. The cross-section of the mixing chamber along the axial direction is in the shape of a Venturi tube.

[0023] In some embodiments, the mixing module further comprises a pipeline adapter, wherein the pipeline adapter is disposed on the mixing device and communicates with the mixing device;

[0024] Wherein, a flow-turbulating column cavity is provided in the pipeline adapter device.

[0025] In some embodiments, the pneumatic drive module includes:

[0026] an air compressor, drivingly connected to the hydraulic drive module; and

[0027] A heat dissipation exchanger, used for dissipating heat from the air compressor;

[0028] The primary side of the heat dissipation exchanger is connected to the lubricating oil circulation pipeline of the air compressor, and the secondary side of the heat dissipation exchanger is connected to the coupling return water interface through a heat dissipation pipeline.

[0029] The portable foam fire extinguishing equipment provided by the present application integrates a mixing module, a hydraulic drive module, an air drive module and a fire extinguishing agent supply module in the chassis, so as to facilitate overall transportation and movement. When used for fire extinguishing, the coupled water inlet interface on the chassis is connected to the external water supply system, the coupled water outlet interface is connected to the external fire extinguishing gun, and the foam external suction port is connected to the fire extinguishing agent storage container that stores the foam liquid. Among them, the pressurized water provided by the water supply system flows into the coupled water outlet interface and is divided into two paths. One path enters the mixing module to be mixed with the foam fire extinguishing agent and compressed air and is output from the coupled water outlet interface. Finally, it is transported from the coupled water outlet interface to the connected fire extinguishing gun to be sprayed outward for fire extinguishing; the other path enters the hydraulic drive module and is then discharged or returned to the water supply system through the coupled water return interface. The hydraulic drive module converts hydraulic potential energy into mechanical energy to drive the air drive module. The driven air drive module generates compressed air. Part of the compressed gas generated by the air drive module enters the mixing module for mixing, and the other part is used to drive the fire extinguishing agent supply module to supply foam fire extinguishing agent.

[0030] Thus, the portable foam fire extinguishing equipment provided by this application adopts an integrated solution with good overall integrity. Furthermore, pressurized water is used as the primary power source to drive the air circuit drive module in the portable foam fire extinguishing equipment to supply compressed air and the fire extinguishing agent supply module to supply foam liquid, eliminating the need for gasoline or diesel engines. This reduces pollution generated by engine operation and is more environmentally friendly. Furthermore, the equipment is lighter and smaller, making it easier to carry and move the entire device. Its use is not restricted by location, meaning it does not need to be fixed, thereby expanding the fire extinguishing range and improving the fire extinguishing effect.

[0031] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without inventive work. In the drawings:

[0033] Figure 1 A schematic diagram of the piping of a portable foam fire extinguishing device provided in an embodiment of the present application;

[0034] Figure 2 for Figure 1 The portable foam fire extinguishing equipment shown in the figure hides a partial structural diagram of the hydraulic drive module and the gas drive module;

[0035] Figure 3 The portable foam fire extinguishing equipment provided in the embodiment of the present application has a schematic diagram of the internal structure of the chassis hidden;

[0036] Figure 4 A schematic diagram of the structure of a portable foam fire extinguishing device integrated into a chassis provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of the three-dimensional structure of the assembled mixing device and pipeline adapter of the mixing module in the portable foam fire extinguishing equipment provided in an embodiment of the present application;

[0038] Figure 6 for Figure 5 A cross-sectional view of the mixing device and the pipeline adapter after assembly.

[0039] Description of Reference Numerals

[0040] 100, mixing module; 110, mixing device; 111, mixing chamber; 112, material supply interface; 113, air supply interface; 120, liquid inlet pipe; 130, liquid outlet pipe; 140, first stop valve; 150, pipeline adapter; 151, flow-disturbing column chamber; 160, mixing flow regulating device; 161, pneumatic actuator; 170, fifth one-way valve;

[0041] 200, hydraulic drive module; 210, hydraulic drive device; 211, coupling mechanism; 220, drive flow regulating device;

[0042] 300, air circuit drive module; 310, air compressor; 320, air distribution device; 330, first air circuit supply module; 331, air volume adjustment mechanism; 332, second stop valve; 333, second one-way valve; 340, second air circuit supply module; 341, third stop valve; 350, air outlet adjustment device; 360, heat exchanger;

[0043] 400, fire extinguishing agent supply module; 410, feed pump group; 420, feed delivery pipeline; 430, third one-way valve; 440, mixing ratio regulator; 450, fourth one-way valve; 460, discharge pipeline; 470, fourth stop valve; 480, pipeline discharge device; 490, spare storage container;

[0044] 500, gas circuit control module; 510, gas circuit control device; 511, control valve; 512, control gas pipe; 520, third gas circuit supply module; 521, first one-way valve; 522, spare gas storage container;

[0045] 600. Mixture storage container;

[0046] 700, chassis; 710, control panel; 720, coupling water inlet interface; 730, coupling water outlet interface; 740, foam external suction port; 750, coupling water return interface; 760, lifting handle; 770, discharge port;

[0047] 1000. Fire extinguisher; 2000. Water supply system; 3000. Fire extinguishing agent storage container. DETAILED DESCRIPTION

[0048] The following describes the specific embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and are not intended to limit the present application.

[0049] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0050] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , this embodiment provides a portable foam fire extinguishing equipment for fire fighting operations.

[0051] The portable foam fire extinguishing device includes a housing 700, a control panel 710, and a mixing module 100, a hydraulic drive module 200, a pneumatic drive module 300, and a fire extinguishing agent supply module 400 integrated within the housing 700. The control panel 710 is mounted on the housing 700 and is used to control the operation of the mixing module 100, the hydraulic drive module 200, the pneumatic drive module 300, and the fire extinguishing agent supply module 400. As will be appreciated, the mixing module 100, the hydraulic drive module 200, the pneumatic drive module 300, and the fire extinguishing agent supply module 400 are all integrated within the housing 700, facilitating subsequent transport and movement of the entire device.

[0052] Furthermore, the chassis 700 is provided with a coupled water inlet 720, a coupled water outlet 730, a foam external suction port 740, and a coupled water return port 750. When the portable foam fire extinguishing device is in use, the coupled water inlet 720 is used to connect to the external water supply system 2000, which can provide pressurized water at a preset pressure. The coupled water outlet 730 can be used to connect to an external fire extinguisher 1000. The foam external suction port 740 is connected to the fire extinguishing agent storage container 3000, which stores the foam liquid. The fire extinguishing agent storage container 3000 is externally located for easy replacement. The coupled water return port 750 can be connected to the return pipe of the water supply system 2000 or directly discharged into a collection container.

[0053] The mixing module 100 is connected to the coupled water inlet interface 720 and the coupled water outlet interface 730, respectively. The fire extinguishing agent supply module 400 is connected to the mixing module 100 for supplying foam fire extinguishing agent. The air circuit drive module 300 is connected to the fire extinguishing agent supply module 400 and the mixing module 100, respectively, for providing compressed air to the mixing module 100 and the fire extinguishing agent supply module 400. The compressed air entering the mixing module 100 is used to mix with water and foam fire extinguishing agent. The compressed air entering the fire extinguishing agent supply module 400 can drive the fire extinguishing agent supply module 400 to operate, thereby achieving the supply of foam fire extinguishing agent. The hydraulic drive module 200 is connected to the coupled water inlet interface 720 and the coupled water return interface 750. The hydraulic drive module 200 is used to convert hydraulic potential energy into mechanical energy to drive the air circuit drive module 300.

[0054] Thus, the portable foam fire-extinguishing equipment provided in this embodiment adopts an integrated solution with good overall integrity. Furthermore, pressurized water is used as the primary power source to drive the air circuit drive module 300 to supply compressed air and the fire extinguishing agent supply module 400 to supply foam liquid within the portable foam fire-extinguishing equipment, eliminating the need for gasoline or diesel engines. This reduces pollution generated by engine operation and is more environmentally friendly. Furthermore, the equipment is lighter and smaller, making it easier to carry and move the entire device. Its use is not restricted by location, meaning it does not require fixed installation, thereby expanding the fire-extinguishing range and improving fire-extinguishing effectiveness.

[0055] Specifically, the mixing module 100 includes a liquid inlet pipe 120 and a liquid outlet pipe 130. The liquid inlet pipe 120 is connected to the coupled water inlet interface 720, and the liquid outlet pipe 130 of the mixing module 100 is connected to the coupled water outlet interface 730. The mixing module 100 includes a mixing device 110 for mixing the fire extinguishing agent.

[0056] The water inlet end of the hydraulic drive module 200 is connected to the coupled water inlet interface 720, and the water return end of the hydraulic drive module 200 is connected to the coupled water return interface 750. The hydraulic drive module 200 includes a hydraulic drive device 210 for converting hydraulic potential energy into mechanical energy.

[0057] The air circuit drive module 300 includes an air compressor 310 and an air distribution device 320. The air compressor 310 is connected to the hydraulic drive device 210 by transmission, for example, by a coupling mechanism 211 (see Figure 1 The air distribution device 320 is connected to the air outlet of the air compressor 310 , and the air distribution device 320 is connected to the mixing device 110 via a first air supply module 330 .

[0058] The above-mentioned fire extinguishing agent supply module 400 is connected to the mixing device 110, and the feeding pump group 410 in the fire extinguishing agent supply module 400 is connected to the gas distribution device 320 through the second gas path supply module 340, so as to be driven by compressed air (which can also be understood as an airflow with a certain pressure), and the feeding pump group 410 is connected to the foam external suction port 740.

[0059] As will be appreciated, the portable foam fire-extinguishing device provided in this embodiment integrates the mixing module 100, hydraulic drive module 200, pneumatic drive module 300, and fire extinguishing agent supply module 400 within a housing 700, facilitating overall transport and mobility. During firefighting operation, the water inlet 720 on the housing 700 is coupled to an external water supply system 2000, the water outlet 730 is coupled to an external fire extinguisher 1000, and the foam suction port 740 is connected to a fire extinguishing agent storage container 3000 storing foam liquid. Among them, the pressurized water provided by the water supply system 2000 enters the coupled water outlet interface 730 and flows in two paths. One path enters the mixing device 110 of the mixing module 100, is mixed with the foam fire extinguishing agent and compressed air in the mixing device 110, and is output from the coupled water outlet interface 730, and finally is sprayed outward by the fire extinguishing gun 1000 to extinguish the fire; the other path enters the hydraulic drive module 200, and the pressurized water will drive the hydraulic drive device 210 to operate, and then is discharged or returned to the water supply system 2000 through the coupled return water interface 750 to avoid waste. Furthermore, the hydraulic drive device 210 converts hydraulic potential energy into mechanical energy to drive the air compressor 310 in the air circuit drive module 300 to work. A portion of the compressed gas generated by the air compressor 310 is transported to the mixing device 110 for mixing through the first air circuit supply module 330, and the other portion drives the feed pump group 410 through the second air circuit supply module 340 to pump the foam liquid in the fire extinguishing agent storage container 3000 into the mixing device 110 for mixing.

[0060] Furthermore, in the portable foam fire extinguishing equipment, water, foam liquid and compressed air can be mixed in the mixing device 110, without the need to arrange two mixing devices 110, saving installation space, making the internal layout of the equipment more compact, and further reducing the weight and volume of the equipment.

[0061] In order to more clearly describe the technical solution of the present application, the portable foam fire extinguishing equipment of this embodiment is described below, specifically as follows:

[0062] See also Figure 4 The coupled water inlet interface 720, the coupled water outlet interface 730 and the coupled water return interface 750 adopt a fire interface structure, which can quickly match the fire hose, realize rapid assembly, shorten the assembly time and improve efficiency.

[0063] The top surface of the chassis 700 is equipped with lifting handles 760. Specifically, there are four lifting handles 760, located at the four corners of the chassis 700. These handles are constructed from stainless steel and covered with a rubber-like sheath. They are ergonomically designed and recommended for four people to lift evenly at the four corners. This allows for quick on-site work and quick storage in a fire truck.

[0064] See also Figure 1 、 Figure 5 and Figure 6 The mixing device 110 comprises a mixing chamber 111 and is provided with a feed port 112 and an air supply port 113 connected to the mixing chamber 111 along the direction of water flow. The feed port 112 is used by the feed pump assembly 410 to inject foam liquid into the mixing chamber 111, and the air supply port 113 is used by the air compressor 310 to inject compressed air. The mixing chamber 111 is a through-structure with a liquid inlet at one end and a liquid outlet at the other end. The liquid inlet allows water to enter the mixing chamber 111. The water then mixes with the fire extinguishing agent from the feed port 112 and is then further mixed with the compressed air from the air supply port 113.

[0065] In this embodiment, the portable foam fire extinguishing equipment further includes an air circuit control module 500 , which can be used to control the on / off and supply of air flow (compressed air).

[0066] See also Figure 1 and Figure 2 The gas circuit control module 500 includes a gas circuit control device 510 and a third gas circuit supply module 520. The gas circuit control device 510 is connected to the first gas circuit supply module 330 and the second gas circuit supply module 340 respectively through the control gas pipe 512. One end of the third gas circuit supply module 520 is connected to the gas distribution device 320, and the other end is connected to the gas circuit control device 510. In this way, the third gas circuit supply module 520 can deliver the airflow supplied by the gas distribution device 320 to the gas circuit control device 510, thereby delivering the airflow for control to the gas circuit control device 510. Specifically, the gas circuit control device 510 can control the on and off of the airflow supply in the first gas circuit supply module 330 and the second gas circuit supply module 340 through the airflow.

[0067] Along the direction of airflow within the third air supply module 520, the module includes a first one-way valve 521 and a backup air storage container 522, which are sequentially connected by pipelines. The first one-way valve 521 is closed in the opposite direction of the airflow within the third air supply module 520 to prevent backflow of air within the backup air storage container 522. The backup air storage container 522 can store a certain amount of airflow. When the air compressor 310 is not operating, the airflow within the backup air storage container 522 can continue to provide controlled airflow to the air control device 510, ensuring continued operation of the air control device 510.

[0068] The air circuit control device 510 is equipped with multiple control valves 511, each of which is connected to at least one control air pipe 512. The control valves 511 can control the flow of air in the corresponding control air pipe 512. Optionally, the control valves 511 can be controlled by a control panel 710 within the portable foam fire extinguishing device. The control panel 710 can be powered by a built-in small-capacity battery or an external power supply.

[0069] Optionally, a controller is provided in the control panel 710, and the controller is a single chip microcomputer or a PLC controller. Of course, in some embodiments, the on-off of the control valve 511 can also be manually controlled.

[0070] See also Figure 1 and Figure 2 Along the direction of water flow in the mixing module 100, the mixing module 100 also includes a first shut-off valve 140 disposed downstream of the mixing device 110. Specifically, the first shut-off valve 140 is located on the liquid outlet side of the mixing device 110 and is in communication with the mixing device 110. The first shut-off valve 140 is connected to the air circuit control device 510 via a control air pipe 512, so that it is controlled by the airflow within the air circuit control device 510. In this way, the air circuit control device 510 can control the opening and closing of the first shut-off valve 140 through airflow, thereby controlling whether the mixed liquid in the mixing device 110 is delivered to the fire extinguisher 1000.

[0071] See also Figure 5 and Figure 6 Furthermore, the mixing module 100 further includes a pipeline adapter 150, which is disposed between the first shut-off valve 140 and the mixing device 110. In this embodiment, the pipeline adapter 150 can be directly mounted on the mixing device 110. A flow-disrupting column cavity 151 is disposed within the pipeline adapter 150. The liquid outlet of the mixing device 110 is directed radially from the flow-disrupting column cavity 151. Thus, the mixed liquid discharged from the mixing device 110 enters the flow-disrupting column cavity 151 along its radial direction and strikes the inner wall of the flow-disrupting column cavity 151, forming turbulence. After being stirred and mixed uniformly, the mixed liquid enters the first shut-off valve 140, further enhancing the mixing effect.

[0072] In addition to enhancing mixing, the pipe adapter 150 eliminates the traditional right-angle elbow structure (which disrupts the column cavity) and allows for pipe diversion with a small turning radius. This structure is ideal for compact structures or installations in small spaces. This saves installation space, making the entire fire extinguishing system more compact and smaller in size.

[0073] See also Figure 6 In this embodiment, mixing chamber 111 is a single-chamber structure, with a cross-sectional shape along the axial direction of mixing chamber 111 being shaped like a Venturi tube. As a result, when water enters mixing chamber 111, it is first pressurized by a tapered section of the pipe, thereby accelerating the water flow rate and creating a negative pressure in mixing chamber 111. This in turn speeds up the injection of fire extinguishing agent and compressed air. Furthermore, the high-pressure water flow accelerates mixing, improving the mixing effect.

[0074] In some embodiments, the mixing module 100 further includes a mixing flow regulating device 160 connected to the mixing device 110. The mixing flow regulating device 160 is disposed upstream of the mixing device 110 along the direction of water flow in the mixing module 100 and is connected to the mixing device 110 via a pipeline. The mixing flow regulating device 160 is used to regulate the water flow rate of the mixing device 110.

[0075] See also Figure 1 and Figure 2 , further, the mixed flow regulating device 160 is controlled and regulated by airflow. Specifically, the mixed flow regulating device 160 has a pneumatic actuator 161, wherein the pneumatic actuator 161 of the mixed flow regulating device 160 is connected to the air circuit control device 510 in the air circuit control module 500 via a control air pipe 512. The air circuit control device 510 controls the action of the pneumatic actuator 161 through airflow, thereby adjusting the opening size of the valve to achieve the purpose of flow regulation. It can be understood that the mixed flow regulating device 160 can adjust the liquid flow entering the mixing chamber 111 to achieve the effect of controlling the fire extinguishing equipment to spray dry or wet mixed liquid. For example, it can be adjusted to a dry foam mode to spray a dry compressed air foam mixture, or it can be adjusted to a wet compressed air foam mixture.

[0076] Optionally, the pneumatic actuator 161 is preferably a pneumatic push rod, and a driving rod and a driving connecting plate are installed on the push rod end, which can be assembled on the control rod of the valve in the mixing flow regulating device 160.

[0077] In some embodiments, a fifth one-way valve 170 is further provided upstream of the mixing flow regulating device 160 . The cut-off direction of the fifth one-way valve 170 is opposite to the water flow direction in the mixing module 100 , thereby preventing the water entering the mixing device 110 from flowing back.

[0078] See also Figure 1 and Figure 2 Along the direction of airflow in the first air supply module 330, the first air supply module 330 includes a first air volume regulating mechanism 331, a second shut-off valve 332, and a second one-way valve 333, which are sequentially connected by pipelines. The first air volume regulating mechanism 331 can be used to adjust the size of the airflow in the first air supply module 330, and the first air volume regulating mechanism 331 can also be electrically controlled by a controller or manually controlled. The second shut-off valve 332 is connected to the air control module 500 via a control air pipe 512, so that the airflow in the air control device 510 can control its on and off. As such, the control principle of the second shut-off valve 332 is consistent with the control principle of the first shut-off valve 140 described above. The outlet of the second one-way valve 333 is connected to the air supply interface 113 of the mixing device 110, and the cut-off direction of the second one-way valve 333 is opposite to the air flow delivery direction in the first air supply module 330. This can prevent the air flow entering the mixing device 110 from flowing back or the water in the mixing chamber 111 from entering the first air supply module 330, thereby ensuring the normal operation of the first air supply module 330.

[0079] It can be understood that the air output of the air compressor 310 is determined by the torque provided by the hydraulic drive device 210, the outlet pressure is set to a fixed pressure by the self-control mold, and the opening and closing of the air inlet valve can be controlled by monitoring the gas pressure at the outlet end; and the first air volume regulating mechanism 331 and the air volume distribution device 320 can further adjust the air volume entering the mixing device 110.

[0080] See also Figure 1 and Figure 2 The second gas supply module 340 includes a third shut-off valve 341, which is disposed between the gas distribution device 320 and the feed pump assembly 410. The third shut-off valve 341 is connected to the gas control device 510 via a control air pipe 512, so that the airflow in the gas control device 510 controls the on / off of the third shut-off valve, thereby controlling the start and stop of the feed pump assembly 410. It will be appreciated that the control principle of the third shut-off valve 341 is consistent with that of the first shut-off valve 140 described above.

[0081] It should be noted that the air distribution device 320 can distribute the compressed air produced by the air compressor 310 to the first air supply module 330, the second air supply module 340, and the third air supply module 520. In some embodiments, a fourth air supply module or a fifth air supply module can also be arranged according to the system structure. Thus, in this embodiment, the air distribution device 320 has at least three air outlets, and the air distribution device 320 can be manually controlled to distribute compressed air to the corresponding air outlets, or it can also be electrically controlled.

[0082] Furthermore, the air circuit driving module 300 also includes an air outlet regulating device 350 , which is disposed between the air compressor 310 and the air distribution device 320 and is used to regulate the air intake volume of the air distribution device 320 .

[0083] The air outlet regulating device 350 is installed at the air outlet of the air compressor 310 and can monitor the air outlet pressure. When the three-way shut-off valves of the air outlet of the air compressor 310 are closed, the air circuit pressure will continue to increase, which may easily cause a "pipe burst" accident. To avoid this situation, the air outlet regulating device 350 feeds back information to the pneumatic regulating module of the regulating device according to the size of the air outlet pressure. The pneumatic regulating module controls the opening of the air inlet of the air compressor 310. In this way, even if the hydraulic drive device 210 continues to provide power to the air compressor 310, the air compressor 310 can automatically control the air production volume, so that the overall system can operate normally and stably.

[0084] See also Figure 1 and Figure 2 The fire extinguishing agent supply module 400 further includes a third one-way valve 430, a mixing ratio regulator 440, and a fourth one-way valve 450, which are sequentially connected along the fire extinguishing agent delivery direction through the feed delivery pipeline 420. The third one-way valve 430 is connected to the outlet of the feed pump assembly 410, and the outlet of the fourth one-way valve 450 is connected to the mixing device 110. The shutoff directions of the third one-way valve 430 and the fourth one-way valve 450 are opposite to the fire extinguishing agent delivery direction.

[0085] Please also refer to Figure 3 and Figure 4 Furthermore, the chassis 700 is provided with a discharge port 770. The fire extinguishing agent supply module 400 also includes a fourth shut-off valve 470 and a pipeline discharge device 480, which are sequentially connected via a discharge pipeline 460. The discharge pipeline 460 is connected to the feed delivery pipeline 420 in the fire extinguishing agent supply module 400. The pipeline discharge device 480 is located at the end of the discharge pipeline 460 and is connected to the discharge port 770. The fourth shut-off valve 470 is connected to the air circuit control device 510 via a control air pipe 512 so as to be controlled by the air flow in the air circuit control module 500. In this embodiment, the control principle of the fourth shut-off valve 470 is consistent with the control principle of the first shut-off valve 140 described above.

[0086] As can be understood, the fourth shut-off valve 470 is responsible for the vacuum self-priming function of the feed delivery pipeline 420 connected to the feed pump group 410. After the feed pump group 410 is operating normally, the feed delivery pipeline 420 will contain segmented air, affecting the flow and quality of the fire extinguishing agent sucked up by the feed pump group 410. The fourth shut-off valve 470 is set on the branch discharge pipeline 460. After the fourth shut-off valve 470 is opened, the air can be discharged from the pipeline discharge device 480 in a timely manner. When the pipeline discharge device 480 discharges excess fire extinguishing agent, the fourth shut-off valve 470 is closed at this time. At this time, the fire extinguishing agent can fill the feed delivery pipeline 420, then enter the mixing ratio regulator 440 to adjust the required ratio, and finally enter the mixing device 110 through the feed interface 112. Among them, the fourth shut-off valve 470 is controlled by the air circuit control device 510, and injection or closing is controlled by one button. The pipeline discharge device 480 is a discharge operating valve.

[0087] In this embodiment, the fire extinguishing agent supply module 400 further includes a backup storage container 490 for storing the fire extinguishing agent. The backup storage container 490 is disposed on the feed delivery pipeline 420, or alternatively, on the discharge pipeline 460 upstream of the fourth shut-off valve 470. The capacity of the backup storage container 490 is smaller than that of the fire extinguishing agent storage container 3000 and can be understood as a small tank to reduce weight and space usage in the fire extinguishing system.

[0088] The fire extinguishing agent storage container 3000 is external. The stored foam liquid is drawn in by the feed pump assembly 410, adjusted to the desired ratio by the mixing ratio regulator 440 on the feed delivery pipeline 420, and then enters the mixing device 110. Excess fire extinguishing agent can be temporarily stored in the spare storage container 490. This ensures that the fire extinguishing system can continue to operate even when the fire extinguishing agent storage container 3000 is replaced, ensuring continuity of firefighting efforts.

[0089] Optionally, the mixing ratio regulator 440 preferably has a stepless adjustment structure, which can cover all medium inputs such as Class A and Class B fire extinguishing agent concentrates with mixing ratios of 0.3%, 1%, 3%, and 6%, depending on the product configuration. It should be understood that the above is merely an example and does not limit the scope of protection of this application.

[0090] See also Figure 1 and Figure 2Furthermore, in this embodiment, the air circuit drive module 300 also includes a heat exchanger 360. The primary side of the heat exchanger 360 is connected to the lubricating oil circulation pipeline of the air compressor 310, and the secondary side of the heat exchanger 360 is coupled to the water return interface 750 via the heat dissipation pipeline. Thus, the cooling medium of the heat exchanger 360 preferably comes from an external pressurized water source; heat is exchanged between the external water source and the lubricating oil of the air compressor 310 to cool the lubricating oil, ensuring the long-term stable and safe operation of the air compressor 310.

[0091] Along the direction of water flow within the hydraulic drive module 200, the hydraulic drive module 200 further includes a drive flow regulating device 220, located upstream of the hydraulic drive device 210. The drive flow regulating device 220 is used to adjust the water flow rate entering the hydraulic drive device 210. The water inlet of the drive flow regulating device 220 is connected to the external water supply system 2000, while the water outlet of the hydraulic drive device 210 returns to the water supply system 2000 via a return pipe.

[0092] In some embodiments, the portable foam fire extinguishing equipment further includes a mixture storage container 600, the discharge port of which is connected to the mixing device 110. The mixture storage container 600 can store other types of mixtures or backup fire extinguishing agents, thereby achieving a mixture of multiple fire extinguishing agents to enhance the fire extinguishing effect.

[0093] See also Figures 1 to 6 According to the portable foam fire extinguishing equipment provided in the above embodiment, a fire extinguishing operation method applicable to the portable foam fire extinguishing equipment is also provided. The fire extinguishing operation method includes the following steps:

[0094] S100: Connect the coupled water inlet interface 720 and the coupled water return interface 750 to the water outlet and water return of the water supply system 2000 respectively, and at the same time install the fire extinguisher 1000 on the coupled water outlet interface 730.

[0095] S200: Install the fire extinguishing agent storage container 3000 and empty the fire extinguishing agent supply module 400.

[0096] S300: Start the external water supply system 2000 to supply water and ensure that the outlet of the mixing module 100 connected to the fire extinguisher 1000 remains closed, so that all the water flow is used to drive the hydraulic drive device 210, and then the hydraulic drive device 210 drives the air compressor 310 to prepare compressed air.

[0097] S400: When the amount of compressed air prepared reaches the preset requirement, the fire extinguishing gun 1000 is activated to start the fire extinguishing operation;

[0098] The water supply pressure of the water supply system 2000 is P, and satisfies: 0.6MPa≤P≤0.8MPa.

[0099] It should be noted that the water supply system 2000 can select water sources such as municipal roadside fire hydrants, hand pumps and fire water in buildings to improve the flexibility of fire fighting.

[0100] The hydraulic driving device 210 may be a hydraulic motor or a hydraulic turbine device.

[0101] The pipes in the fire extinguishing system are all high-quality anti-corrosion hard pipes, such as anodized aluminum alloy pipes or stainless steel pipes.

[0102] A filter can be added to the pipeline of the external water supply system 2000 to filter out impurities and dirt, and to ensure the normal operation of the fire extinguishing system.

[0103] The backup gas storage container 522 can store compressed gas with a capacity of not less than 1L and a pressure of not less than 8 bar. The stored gas can be used to temporarily control the gas circuit control module 500 after the system loses power.

[0104] The mixing device 110 in the portable foam fire extinguishing equipment provided in this embodiment is provided with at least one mixing chamber 111, which can mix at least a variety of mixed media, and the mixed medium includes but is not limited to chemical raw materials such as foam liquid and dry powder. The mixing chamber 111 adopts an innovative single-chamber structure and a structure for mixing foam liquid and compressed gas at the same time. The pipe spacing between the injection port for injecting fire extinguishing agent and the injection port for injecting compressed gas in the mixing chamber 111 is less than or equal to 100mm, and the injection angle and the injection port adopt a special structure. The injection port is at a certain angle to the water flow direction, and the angle is between 30° and 60°, preferably 45° injection angle, so that water, fire extinguishing agent and compressed gas are fully mixed and foamed in a certain proportion. The mixing relationship among the three is as follows:

[0105] First, the expansion ratio (E) of a foam solution is defined as the ratio of a given volume of foam to the volume of the mixed solution at an ambient temperature of 20°C. The formula is: E = Vρ / m, where V is the foam volume, m is the net weight of the foam solution, and ρ is the density of the foam solution.

[0106] To ensure the injection volume, the foam liquid pressure is greater than the water supply pressure, specifically, the foam liquid pressure is slightly greater than the water supply pressure. The injection flow rate is controlled by the mixing ratio regulator 440 at a fixed ratio, such as 0.3%, 0.7%, 1%, etc.

[0107] In this embodiment, the compressed air pressure is greater than the supplied water pressure; specifically, it is slightly greater than the supplied water pressure. The ratio of the compressed air injection flow rate to the mixed liquid discharge flow rate is the gas-liquid ratio. Based on the foaming expansion ratio requirement, the gas-liquid ratio is ≥ 6. This allows the water, foam liquid, and compressed gas to be thoroughly mixed and foamed. As a result, the compressed air-foam mixture produced by mixing chamber 111 has a foaming expansion ratio that is no less than that required by international standards and is comparable to the foaming effect produced by the nozzle of a conventional compressed air foam fire truck.

[0108] The turbulent column cavity 151 in the pipeline adapter 150 can turbulent the mixed liquid and enhance the mixing effect; the turbulent column cavity 151 is a cylindrical cavity, and the pipeline adapter 150 and the mixing device 110 are quickly installed in a snap-on form. In addition to intensifying the mixing effect, because the traditional right-angle elbow structure is abandoned, the pipeline can be turned with a small turning radius. This structure is extremely suitable for compact structures or small-size space installation.

[0109] It should be noted that in this application, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0110] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0111] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0113] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A portable foam fire extinguishing equipment, characterized in that: include: A chassis (700), wherein the chassis (700) is provided with a coupled water inlet interface (720), a coupled water outlet interface (730), a foam external suction port (740), and a coupled water return interface (750); A mixing module (100) is disposed in the chassis (700) and is connected to the coupled water inlet interface (720) and the coupled water outlet interface (730) respectively; a fire extinguishing agent supply module (400), disposed in the chassis (700) and connected to the mixing module (100), for supplying foam fire extinguishing agent; an air circuit driving module (300) disposed in the chassis (700) and connected to the fire extinguishing agent supply module (400) and the mixing module (100), respectively, for providing compressed air to the mixing module (100) and the fire extinguishing agent supply module (400); and A hydraulic drive module (200) is arranged in the chassis (700) and connected to the coupled water inlet interface (720) and the coupled water return interface (750). The hydraulic drive module (200) is used to convert hydraulic potential energy into mechanical energy for driving the air circuit drive module (300) to work.

2. The portable foam fire extinguishing equipment according to claim 1, characterized in that: The coupled water inlet interface (720), the coupled water outlet interface (730) and the coupled water return interface (750) adopt a fire protection interface structure.

3. The portable foam fire extinguishing equipment according to claim 1, characterized in that: A lifting handle (760) is provided on the top surface of the chassis (700).

4. The portable foam fire extinguishing equipment according to claim 1, characterized in that: The portable foam fire extinguishing equipment further comprises an air circuit control module (500) disposed in the housing (700), wherein the air circuit control module (500) is connected to the air circuit drive module (300), and the air circuit control module (500) is further connected to the mixing module (100), the fire extinguishing agent supply module (400), and the hydraulic drive module (200) respectively via a control air pipe (512); The air circuit drive module (300) is used to provide compressed air for control to the air circuit control module (500).

5. The portable foam fire extinguishing equipment according to claim 4, characterized in that: A first one-way valve (521) and a spare gas storage container (522) are further provided between the gas circuit control module (500) and the gas circuit drive module (300); The cut-off direction of the first one-way valve (521) is opposite to the air flow conveying direction between the air path control module (500) and the air path drive module (300).

6. The portable foam fire extinguishing equipment according to claim 4, characterized in that: The chassis (700) is also provided with a discharge port (770); The fire extinguishing agent supply module (400) further comprises a fourth stop valve (470) and a pipeline discharge device (480) connected in sequence via a discharge pipeline (460), wherein the discharge pipeline (460) is connected to the feed delivery pipeline (420) in the fire extinguishing agent supply module (400), and the pipeline discharge device (480) is located at the end of the discharge pipeline (460) and connected to the discharge port (770); The fourth stop valve (470) is controlled by air flow and is connected to the air path control module (500) via the control air pipe (512).

7. The portable foam fire extinguishing equipment according to claim 6, characterized in that: The fire extinguishing agent supply module (400) further includes a spare storage container (490) for storing the fire extinguishing agent. The spare storage container (490) is arranged on the feeding and conveying pipeline (420), or the spare storage container (490) is arranged on the discharge pipeline (460) and is located upstream of the fourth shut-off valve (470).

8. The portable foam fire extinguishing equipment according to claim 1, characterized in that: The mixing module (100) comprises a mixing device (110), wherein the mixing device (110) has a mixing chamber (111), the mixing chamber (111) is a single-chamber structure, and the cross-sectional shape of the mixing chamber (111) along the axial direction is a Venturi tube shape.

9. The portable foam fire extinguishing equipment according to claim 8, characterized in that: The mixing module (100) further comprises a pipeline adapter (150), wherein the pipeline adapter (150) is arranged on the mixing device (110) and communicates with the mixing device (110); Wherein, a flow-turbulating column cavity (151) is provided in the pipeline adapter (150).

10. The portable foam fire extinguishing equipment according to any one of claims 1 to 9, characterized in that: The air path drive module (300) comprises: an air compressor (310) in driving connection with the hydraulic drive module (200); and a heat dissipation exchanger (360) for dissipating heat from the air compressor (310); The primary side of the heat dissipation exchanger (360) is connected to the lubricating oil circulation pipeline of the air compressor (310), and the secondary side of the heat dissipation exchanger (360) is connected to the coupling return water interface (750) via a heat dissipation pipeline.

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