Gas-liquid mixing atomizing device and fire extinguishing equipment

Abstract

The application discloses a gas-liquid mixed atomization device and fire extinguishing equipment, and relates to the field of fire-fighting equipment. The gas-liquid mixed atomization device comprises a liquid storage tank and a mixed atomization assembly, and the mixed atomization assembly comprises a cylinder, a flow guide piece, an atomization nozzle and a siphon pipe. The cylinder is inserted into the liquid storage tank. The cylinder has an outer end outside the liquid storage tank and an inner end inside the liquid storage tank. The siphon pipe is connected to the inner end of the cylinder and is used to extend into the liquid. The atomization nozzle is arranged in the cylinder and communicates with the siphon pipe. The flow guide piece is arranged in the cylinder and forms a gas-liquid mixing channel in the cylinder. A plurality of through holes are formed in the cylinder. The gas-liquid mixed atomization device provided by the application integrates the siphon function, the mixing function and the atomization function, greatly reduces the arrangement of equipment components and pipelines, and improves the reliability of the equipment.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment technology, and more specifically, to a gas-liquid mixing atomizing device and a fire extinguishing device. Background Technology

[0002] Currently, siphon devices and gas-liquid generators in the fire protection field are often installed separately. Siphon devices only have a siphon function and lack gas-liquid mixing capabilities. In the emerging field of gas-liquid fire extinguishing technology, when gas and liquid are simultaneously transported in a single pipeline, stratification occurs due to their immiscibility. The upper gas layer flows at a higher velocity than the lower liquid layer. During terminal discharge, the gas exits before the liquid, causing severe vibrations and even damage to the pipeline system and equipment. Therefore, existing fire extinguishing equipment suffers from low integration and poor reliability. Summary of the Invention

[0003] The purpose of this application is to provide a gas-liquid mixing atomizing device and a fire extinguishing device, which have high integration and reliability.

[0004] The embodiments of this application can be implemented as follows: In a first aspect, this application provides a gas-liquid mixing atomizing device, comprising: A liquid storage tank is used to hold liquids and has an air inlet. The mixing atomizing assembly installed in the liquid storage tank includes a cylinder, a flow guide, an atomizing nozzle, and a siphon tube. The cylinder is inserted into the liquid storage tank and has an outer end located outside the liquid storage tank and an inner end located inside the liquid storage tank. The siphon tube is connected to the inner end of the cylinder and is used to extend into the liquid. The atomizing nozzle is located inside the cylinder and communicates with the siphon tube. The flow guide is located inside the cylinder and forms a gas-liquid mixing channel inside the cylinder. Several through holes are opened on the cylinder, and the through holes and the atomizing nozzle are closer to the inner end of the cylinder than the flow guide.

[0005] In an optional embodiment, both the air inlet and the mixing atomizing component are located on the top plate of the liquid storage tank.

[0006] In an optional embodiment, a plurality of through holes are arranged around the cylinder body, and a liquid-blocking component is provided on the outer periphery of the cylinder body. The liquid-blocking component includes a protective cylinder sleeved on the outside of the cylinder body and a connecting part connecting the protective cylinder and the cylinder body. The protective cylinder surrounds the area on the cylinder body where the through holes are opened and is spaced apart from the cylinder body.

[0007] In an optional embodiment, the guide includes a fixed shaft and blades spirally arranged around the fixed shaft. A fixing part is provided inside the cylinder, the fixed shaft is connected to the fixing part, the inner edge of the blades is connected to the fixed shaft, and the outer edge of the blades is connected to the inner wall of the cylinder, so that a spiral gas-liquid mixing channel is formed inside the cylinder.

[0008] In an optional embodiment, a mounting base is provided at the inner end of the cylinder, the mounting base seals the inner end of the cylinder, the atomizing nozzle is connected to the side of the mounting base facing the inside of the cylinder, the siphon tube is connected to the side of the mounting base facing the outside of the cylinder, and the mounting base is provided with a connection hole to connect the siphon tube and the atomizing nozzle.

[0009] In an optional embodiment, the atomizing nozzle includes a nozzle body and a plurality of nozzles. The nozzle body is connected to a mounting base. A flow channel is provided inside the nozzle body and extends along the axis of the nozzle body. The nozzles are disposed in the nozzle body and communicate with the flow channel. The plurality of nozzles are spaced apart around the axis of the nozzle body, and the orientation of the nozzles forms an angle with the axis of the nozzle body.

[0010] In an optional implementation, the nozzle is oriented at an angle of 45° to 70° to the axis of the nozzle body.

[0011] In an optional embodiment, the air inlet is provided with an air inlet flow regulating valve, and the outer end of the cylinder is connected to an outlet flow regulating valve.

[0012] In an optional embodiment, an assembly part is provided on the outer side of the cylinder, the assembly part is arranged around the cylinder, the assembly part is provided with external threads, the liquid storage tank is provided with an assembly hole, the assembly hole is provided with internal threads, and the assembly part is screwed to the assembly hole.

[0013] Secondly, this application provides a fire extinguishing device, including a gas-liquid mixing atomizing device according to any of the foregoing embodiments.

[0014] The beneficial effects of the gas-liquid mixing atomizing device and fire extinguishing equipment provided in this application include: The gas-liquid mixing atomizing device provided in this application includes a liquid storage tank and a mixing atomizing assembly. The liquid storage tank is used to contain liquid and has an air inlet. The mixing atomizing assembly includes a cylinder, a guide element, an atomizing nozzle, and a siphon tube. The cylinder is inserted into the liquid storage tank. The cylinder has an outer end located outside the liquid storage tank and an inner end located inside the liquid storage tank. The siphon tube is connected to the inner end of the cylinder and is used to extend into the liquid. The atomizing nozzle is disposed in the cylinder and communicates with the siphon tube. The guide element is disposed in the cylinder and forms a gas-liquid mixing channel within the cylinder. Several through holes are opened on the cylinder, and the through holes and the atomizing nozzle are close to the inner end of the cylinder relative to the guide element. When using the gas-liquid mixing atomizing device, gas is input into the liquid storage tank through the air inlet. A portion of the gas applies pressure to the liquid surface, causing the liquid to enter the cylinder through the siphon tube and the atomizing nozzle under the action of gas pressure, and forming droplet particles under the atomization action of the atomizing nozzle. Another portion of the gas enters the cylinder through the through-hole, mixes with the atomized droplets, and then moves along the gas-liquid mixing channel, where it is further mixed evenly. Finally, the uniformly mixed gas-liquid two-phase flow is output from the outer end of the cylinder. The gas-liquid mixing atomizing device provided in this application integrates siphon, mixing, and atomization functions into one unit, significantly reducing the arrangement of equipment components and pipelines, optimizing structural design, and reducing manufacturing costs. Furthermore, by fully mixing the gas and atomized droplets through the gas-liquid mixing channel, it reduces the problems of gas-liquid stratification and incompatibility during gas-liquid transportation, as well as pipeline oscillation, thereby improving the reliability of the equipment.

[0015] The fire extinguishing equipment provided in this application includes the aforementioned gas-liquid mixing atomizing device, which features high integration and good reliability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a gas-liquid mixing atomizing device in one embodiment of this application; Figure 2 This is a cross-sectional view of a gas-liquid mixing atomizing device in one embodiment of this application; Figure 3 This is a schematic diagram of a hybrid atomizing component in one embodiment of this application; Figure 4 This is a cross-sectional view of a hybrid atomizing component in one embodiment of this application; Figure 5 This is a schematic diagram of an atomizing nozzle in one embodiment of this application; Figure 6This is a cross-sectional view of an atomizing nozzle in one embodiment of this application.

[0018] Icons: 100-Liquid storage tank; 101-Top plate; 110-Air inlet; 120-Assembly hole; 130-Liquid filling port; 140-Level gauge; 150-Drain valve; 200-Mixing atomizing assembly; 210-Cylinder; 211-Through hole; 212-Fixing part; 213-Assembly part; 214-Flange; 215-Mounting base; 220-Flow guide; 221-Fixing shaft; 222-Blade; 230-Atomizing nozzle; 231-Nozzle body; 232-Nozzle; 233-Flow channel; 240-Siphon tube; 250-Liquid baffle; 251-Protective cylinder; 252-Connecting part; 300-Inlet flow regulating valve; 400-Outlet flow regulating valve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0025] In fire extinguishing equipment using related technologies, siphon devices and gas-liquid generators are often installed separately. The siphon device only has a siphon function and lacks a gas-liquid mixing function. This results in low equipment integration. Furthermore, when gas and liquid are simultaneously transported in a single pipeline, stratification is prone to occur, with the upper gas layer flowing faster than the lower liquid layer. During terminal discharge, the gas exits before the liquid, causing severe vibrations and even damage to the pipeline system and equipment, thus reducing equipment reliability.

[0026] Therefore, this application provides a gas-liquid mixing atomizing device that integrates siphon function, mixing function and atomizing function, and improves gas-liquid mixing effect and device reliability.

[0027] Figure 1 This is a schematic diagram of a gas-liquid mixing atomizing device in one embodiment of this application; Figure 2 This is a cross-sectional view of a gas-liquid mixing atomizing device in one embodiment of this application. Figure 1 and Figure 2 As shown, the gas-liquid mixing atomizing device provided in this embodiment includes a liquid storage tank 100 and a mixing atomizing component 200. The liquid storage tank 100 is used to contain liquid and has an air inlet 110. The mixing atomizing component 200 is disposed in the liquid storage tank 100 and is used to receive the gas and liquid in the liquid storage tank 100, atomize the liquid and mix it thoroughly with the gas, and then output a gas-liquid two-phase flow. It can be understood that one or both of the above-mentioned gas and liquid are fire extinguishing materials. In this embodiment, the air inlet 110 is provided with an air inlet flow regulating valve 300, and the output end of the mixing atomizing component 200 is connected to an outlet flow regulating valve 400. The air inlet flow regulating valve 300 can regulate the air inlet flow, thereby regulating the gas pressure in the liquid storage tank 100 and the flow rate of the gas-liquid two-phase flow finally output from the mixing atomizing component 200; the outlet flow regulating valve 400 can regulate the flow rate of the output gas-liquid mixed medium. Optionally, a flow meter is installed at the air inlet 110 or on the air inlet flow regulating valve 300. The flow meter monitors the current gas flow rate entering the air inlet 110 in real time, and adjusts the opening of the air inlet flow regulating valve 300 according to the monitored flow rate, thereby regulating the flow rate of the output gas-liquid mixture.

[0028] In this embodiment, the liquid storage tank 100 has a top plate 101, and the air inlet 110 and the mixing atomizing assembly 200 are both disposed on the top plate 101. A liquid filling port 130 is also provided on the top plate 101, which can be opened or closed via a cover. As gas-liquid mixing and atomization proceed, the liquid in the liquid storage tank 100 gradually decreases, and liquid can be replenished into the liquid storage tank 100 through the liquid filling port 130.

[0029] Furthermore, in this embodiment, a level gauge 140 is also provided on the side wall of the liquid storage tank 100. Specifically, the level gauge 140 may have a transparent window, thereby allowing observation of the liquid level position in the level gauge 140, and the liquid level height in the level gauge 140 is the liquid level height inside the liquid storage tank 100.

[0030] Furthermore, the bottom of the liquid storage tank 100 is also provided with a drain port and a drain valve 150 for opening and closing the drain port. The liquid in the liquid storage tank 100 can be drained through the drain port and the drain valve 150.

[0031] In alternative embodiments, the air inlet 110 and the mixing atomizing assembly 200 are also located on the side wall of the liquid storage tank 100, but should be above the liquid level (except for the siphon tube 240 extending into the liquid level).

[0032] Figure 3 This is a schematic diagram of a hybrid atomizing component 200 in one embodiment of this application; Figure 4 This is a cross-sectional view of a hybrid atomizing component 200 in one embodiment of this application. (In conjunction with...) Figures 2 to 4 In this application, the mixing atomizing assembly 200 includes a cylinder 210, a flow guide 220, an atomizing nozzle 230, and a siphon tube 240. The cylinder 210 is inserted into the liquid storage tank 100. The cylinder 210 has an outer end located outside the liquid storage tank 100 and an inner end located inside the liquid storage tank 100. The siphon tube 240 is connected to the inner end of the cylinder 210 and is used to extend into the liquid. The atomizing nozzle 230 is disposed inside the cylinder 210 and communicates with the siphon tube 240. The flow guide 220 is disposed inside the cylinder 210 and forms a gas-liquid mixing channel inside the cylinder 210. A plurality of through holes 211 are formed on the cylinder 210, and the through holes 211 and the atomizing nozzle 230 are close to the inner end of the cylinder 210 relative to the flow guide 220.

[0033] In this embodiment, when the air pressure outside the cylinder 210 is greater than the air pressure inside, the gas outside the cylinder 210 enters the interior of the cylinder 210 through the through-hole 211 and mixes with the atomized droplets sprayed from the atomizing nozzle 230 near the inner end of the cylinder 210. To make the mixing more uniform, in this embodiment, a plurality of through-holes 211 are arranged in an array around the cylinder 210, so that the gas around the cylinder 210 can enter the cylinder 210 uniformly; and the atomizing nozzle 230 is surrounded by the area on the cylinder 210 with the through-holes 211. Optionally, the cylinder 210 and the atomizing nozzle 230 are coaxially arranged.

[0034] In this embodiment, the guide member 220 forms a gas-liquid mixing channel, allowing the gas and liquid phases initially mixed at the inner end of the cylinder 210 to enter the gas-liquid mixing channel and be transported along the channel to the outer end of the cylinder 210. Without the guide member 220, the gas and liquid, after initial mixing, would be directly output to the outer end of the cylinder 210, resulting in a short path and potentially insufficient mixing. In this embodiment, the guide member 220 forms a relatively long gas-liquid mixing channel (at least longer than the straight-line distance from the through-hole 211 to the outer end of the cylinder 210), allowing the gas and liquid to be transported along the channel after initial mixing and to be fully mixed within it. In this embodiment, the guide member 220 includes a fixed shaft 221 and blades 222 spirally arranged around the fixed shaft 221. A fixing part 212 is provided inside the cylinder 210, the fixed shaft 221 is connected to the fixing part 212, the inner edge of the blades 222 is connected to the fixed shaft 221, and the outer edge of the blades 222 is connected to the inner wall of the cylinder 210, so that a spiral gas-liquid mixing channel is formed inside the cylinder 210. Optionally, the fixed shaft 221 is coaxially arranged with the cylinder 210. It can be understood that the gas entering the cylinder 210 through the through hole 211 and the atomized droplets can only reach the outer end of the cylinder 210 through the gas-liquid mixing channel; and the length of the spiral gas-liquid mixing channel is much greater than the straight distance from the through hole 211 to the outer end of the cylinder 210. In such a long path, the gas and atomized droplets can be effectively and fully mixed evenly, reducing the phenomenon of gas-liquid stratification.

[0035] The purpose of the flow guide 220 is to form a relatively long gas-liquid mixing channel so that the gas and liquid can be fully mixed. In this embodiment, the flow guide 220 forms a spiral gas-liquid mixing channel; in other optional embodiments, the structure of the flow guide 220 can take other forms to form other types of gas-liquid mixing channels, such as forming a zigzag gas-liquid mixing channel. In another optional embodiment, the flow guide 220 may include a fixed shaft and multiple partitions sleeved on the fixed shaft. The partitions are arranged at intervals along the axial direction of the fixed shaft, and the outer edges of the partitions are connected to the inner wall of the cylinder 210. Each partition has a flow guide hole, and the flow guide holes on adjacent partitions are staggered, so that the flow guide 220 can form a meandering gas-liquid mixing channel with a long path.

[0036] It is understandable that when the liquid level in the storage tank 100 is high, the liquid surface may submerge the inner end of the cylinder 210; or, when the entire device shakes, causing the liquid surface to fluctuate, the liquid level may be higher than the inner end of the cylinder 210; or, when liquid splashes in the storage tank 100, liquid may be sprayed onto the inner end of the cylinder 210. All three of these situations could cause liquid to enter the cylinder 210 through the through hole 211. Since the liquid entering through the through hole 211 is not atomized, it cannot mix evenly with the gas inside the cylinder 210. Therefore, in this embodiment, a liquid-blocking component 250 is provided on the outer periphery of the cylinder 210. The liquid-blocking component 250 includes a protective cylinder 251 sleeved on the outside of the cylinder 210 and a connecting portion 252 connecting the protective cylinder 251 and the cylinder 210. The protective cylinder 251 surrounds the area on the cylinder 210 where the through hole 211 is located and is spaced apart from the cylinder 210. By providing the liquid-blocking component 250, liquid can be prevented from directly entering the cylinder 210 through the through hole 211, while gas can enter the space between the cylinder 210 and the protective cylinder 251 through the gap between the upper end of the protective cylinder 251 and the outer wall of the cylinder 210, and then enter the cylinder 210 through the through hole 211. Providing the liquid-blocking component 250 also allows the liquid storage tank 100 to store more liquid.

[0037] Optionally, the cylinder 210 and the protective cylinder 251 are coaxially arranged; further, the connecting part 252 is in the shape of an annular plate, sealing the lower end of the protective cylinder 251 with the outer wall of the cylinder 210.

[0038] Furthermore, an assembly part 213 is provided on the outer side of the cylinder 210, surrounding the cylinder 210 and having external threads. The liquid storage tank 100 has an assembly hole 120 with internal threads, and the assembly part 213 is screwed into the assembly hole 120. This threaded connection between the liquid storage tank 100 and the mixing atomizing component 200 ensures connection strength and facilitates assembly and disassembly. To ensure a sealing effect, a sealing element can also be provided between the assembly part 213 and the assembly hole 120.

[0039] Furthermore, a flange 214 is provided at the outer end of the cylinder 210, which is used to connect to the outlet flow regulating valve 400.

[0040] In this embodiment, a mounting base 215 is provided at the inner end of the cylinder 210, which seals the inner end of the cylinder 210. An atomizing nozzle 230 is connected to the side of the mounting base 215 facing the inside of the cylinder 210, and a siphon tube 240 is connected to the side of the mounting base 215 facing the outside of the cylinder 210. The mounting base 215 is provided with a connection hole to connect the siphon tube 240 and the atomizing nozzle 230. Optionally, the mounting base 215 and the atomizing nozzle 230 are detachably connected. When the atomizing function is not needed, such as when the device is used in a foam fire extinguishing system, the atomizing nozzle 230 can be detached, allowing the premixed extinguishing agent in the storage tank 100 to directly enter the cylinder 210.

[0041] Figure 5 This is a schematic diagram of an atomizing nozzle 230 in one embodiment of this application; Figure 6 This is a cross-sectional view of an atomizing nozzle 230 in one embodiment of this application. Figure 5 and Figure 6 As shown, the atomizing nozzle 230 includes a nozzle body 231 and multiple nozzles 232. The nozzle body 231 is connected to the mounting base 215. A flow channel 233 is provided inside the nozzle body 231, extending along the axis L1 of the nozzle body 231. The nozzles 232 are disposed on the nozzle body 231 and communicate with the flow channel 233. The multiple nozzles 232 are spaced apart around the axis of the nozzle body 231, and the orientation of the nozzles 232 forms an angle with the axis of the nozzle body 231 and also with the axis of the cylinder 210. In this embodiment, the liquid delivered from the siphon tube 240 first enters the flow channel 233 of the nozzle body 231, reaches the nozzle 232 along the flow channel 233, and is atomized after passing through the nozzle 232. In this embodiment, the axis of the nozzle body 231 is the axis of the atomizing nozzle 230, and the axis of the nozzle body 231 coincides with the axis of the cylinder 210.

[0042] It is understood that multiple nozzles 232 arranged around the axis L1 of the nozzle body 231 allow for a more uniform distribution of atomized droplets within the cylinder 210. Optionally, the nozzles 232 are oriented at an angle of 45° to 70° to the axis of the cylinder 210. Specifically, the nozzles 232 are oriented at a 60° angle to the axis of the cylinder 210. This tilt angle allows the atomized droplets to partially offset the gas entering through the through-hole 211, thereby achieving a more uniform mixing. Figure 6 The axis of the nozzle 232 is L2, and the angle between the direction of the nozzle 232 and the axis of the nozzle body 231 (that is, the angle between the direction of the nozzle 232 and the axis of the cylinder 210) is the angle A between L1 and L2.

[0043] The working principle of the gas-liquid mixing atomizing device provided in this application embodiment is as follows: When using the gas-liquid mixing atomizing device, gas is input into the storage tank 100 through the air inlet 110. Part of the gas applies pressure to the liquid surface, causing the liquid to enter the cylinder 210 through the siphon pipe 240 and atomizing nozzle 230 under the action of gas pressure, forming droplets under the atomization effect of the atomizing nozzle 230. Another part of the gas enters the cylinder 210 through the through-hole 211 and mixes with the atomized droplets. The mixed gas-liquid mixture moves along a spiral gas-liquid mixing channel and is further mixed uniformly within the channel. Finally, the uniformly mixed gas-liquid two-phase flow reaches the outer end of the cylinder 210 and is output through the outlet flow regulating valve 400. When the liquid in the storage tank 100 is low, liquid can be added through the liquid inlet 130, and the current liquid level can be observed through the level gauge 140. The gas-liquid mixing atomizing device provided in this application integrates siphon, mixing, and atomization functions, significantly reducing the arrangement of equipment components and pipelines, optimizing the structural design, and reducing manufacturing costs. Furthermore, the gas and atomized droplets are thoroughly mixed through the gas-liquid mixing channel, reducing the problems of gas-liquid stratification incompatibility and pipeline oscillation during gas-liquid transportation, thus improving the reliability of the equipment.

[0044] This application embodiment also provides a fire extinguishing device, including the aforementioned gas-liquid mixing atomizing device. Optionally, the fire extinguishing device further includes a gas source (not shown in the figure), which can be connected to the air inlet 110 via an air inlet pipe, and the gas source can be used to provide extinguishing gas. Further, the fire extinguishing device may further include an output pipe, which is connected to the outer end of the cylinder 210, and the output pipe is used to transmit a uniformly mixed extinguishing medium (gas-liquid two-phase). Because this fire extinguishing device includes the aforementioned gas-liquid mixing atomizing device, it has the characteristics of high integration and high reliability.

[0045] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A gas-liquid mixing atomizing device, characterized in that, include: A liquid storage tank (100) is used to contain liquid, and the liquid storage tank (100) has an air inlet (110). A mixing atomizing assembly (200) is installed in the liquid storage tank (100). The mixing atomizing assembly (200) includes a cylinder (210), a flow guide (220), an atomizing nozzle (230), and a siphon tube (240). The cylinder (210) is inserted into the liquid storage tank (100). The cylinder (210) has an outer end located outside the liquid storage tank (100) and an inner end located inside the liquid storage tank (100). The siphon tube (240) is connected to the inner end of the cylinder (210). A siphon tube (240) is used to extend into the liquid. The atomizing nozzle (230) is disposed inside the cylinder (210) and communicates with the siphon tube (240). The flow guide (220) is disposed inside the cylinder (210) and forms a gas-liquid mixing channel inside the cylinder (210). A plurality of through holes (211) are opened on the cylinder (210). The through holes (211) and the atomizing nozzle (230) are close to the inner end of the cylinder (210) relative to the flow guide (220).

2. The gas-liquid mixing atomizing device according to claim 1, characterized in that, Both the air inlet (110) and the mixing atomizing component (200) are located on the top plate (101) of the liquid storage tank (100).

3. The gas-liquid mixing atomizing device according to claim 1, characterized in that, A plurality of through holes (211) are provided around the cylinder (210). A liquid-blocking member (250) is provided on the outer periphery of the cylinder (210). The liquid-blocking member (250) includes a protective cylinder (251) sleeved on the outside of the cylinder (210) and a connecting part (252) connecting the protective cylinder (251) and the cylinder (210). The protective cylinder (251) surrounds the area on the cylinder (210) where the through holes (211) are provided, and is spaced apart from the cylinder (210).

4. The gas-liquid mixing atomizing device according to claim 1, characterized in that, The flow guide (220) includes a fixed shaft (221) and blades (222) spirally arranged around the fixed shaft (221). A fixing part (212) is provided on the inner side of the cylinder (210). The fixed shaft (221) is connected to the fixing part (212). The inner edge of the blade (222) is connected to the fixed shaft (221), and the outer edge of the blade (222) is connected to the inner wall of the cylinder (210), so that a spiral gas-liquid mixing channel is formed inside the cylinder (210).

5. The gas-liquid mixing atomizing device according to claim 1, characterized in that, The inner end of the cylinder (210) is provided with a mounting base (215), which blocks the inner end of the cylinder (210). The atomizing nozzle (230) is connected to the side of the mounting base (215) facing the inside of the cylinder (210). The siphon tube (240) is connected to the side of the mounting base (215) facing the outside of the cylinder (210). The mounting base (215) is provided with a connecting hole to connect the siphon tube (240) and the atomizing nozzle (230).

6. The gas-liquid mixing atomizing device according to claim 5, characterized in that, The atomizing nozzle (230) includes a nozzle body (231) and a plurality of nozzles (232). The nozzle body (231) is connected to the mounting base (215). A flow channel (233) is provided inside the nozzle body (231). The flow channel (233) extends along the axis of the nozzle body (231). The nozzles (232) are disposed on the nozzle body (231) and communicate with the flow channel (233). The plurality of nozzles (232) are spaced apart around the axis of the nozzle body (231), and the orientation of the nozzles (232) is at an angle to the axis of the cylinder (210).

7. The gas-liquid mixing atomizing device according to claim 6, characterized in that, The nozzle (232) is oriented at an angle of 45° to 70° to the axis of the cylinder (210).

8. The gas-liquid mixing atomizing device according to claim 1, characterized in that, The air inlet (110) is equipped with an air inlet flow regulating valve (300), and the outer end of the cylinder (210) is connected to an outlet flow regulating valve (400).

9. The gas-liquid mixing atomizing device according to claim 1, characterized in that, An assembly part (213) is provided on the outer side of the cylinder (210). The assembly part (213) is arranged around the cylinder (210). The assembly part (213) is provided with external threads. The liquid storage tank (100) is provided with an assembly hole (120). The assembly hole (120) is provided with internal threads. The assembly part (213) is screwed to the assembly hole (120).

10. A fire extinguishing device, characterized in that, Includes the gas-liquid mixing atomizing device according to any one of claims 1-9.

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