Fixed and movable combined foam fire extinguishing equipment

Abstract

The utility model relates to the technical field of fire-fighting equipment, and discloses fixed and movable combined foam fire extinguishing equipment which comprises a water hose adapter, a water outlet end of the water hose adapter is sleeved with an overflowing pipeline in a threaded mode, an overflowing cavity is formed in the overflowing pipeline, and the outer side of one end, away from the water hose adapter, of the overflowing pipeline is sleeved with a foam rod barrel in a threaded mode. A water outlet pipe section is connected to the outer side of the end, away from the overflowing pipeline, of the foam rod barrel in a threaded and sleeving mode, a water outlet structure is arranged in the water outlet pipe section, the water outlet structure comprises a gradually-shrinking cavity formed in the side, close to the foam rod barrel, of the interior of the water outlet pipe section, and the gradually-shrinking cavity communicates with the foam cavity; and an expansion cavity is formed in the inner wall of the side, away from the foam rod barrel, of the gradually-shrinking cavity, pollutants such as floating dust and impurities in air are prevented from entering the first air suction hole and the second air suction hole through an arranged metal filter screen, and the purity of foam mixed liquid and the fire extinguishing effect of foam are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically to a fixed-moving foam fire extinguishing device. Background Technology

[0002] At present, Class A fire extinguishing methods for high-rise building fires face many challenges. Due to the special structure of high-rise buildings, fires spread rapidly and evacuation is difficult, which puts increasing demands on fire extinguishing equipment. In actual fire extinguishing, firefighters generally choose a combination of fixed and mobile methods. This method combines the stability of fixed fire extinguishing systems with the flexibility of mobile fire extinguishing equipment, which can effectively deal with the complex situation of high-rise building fires.

[0003] A search revealed Chinese patent CN222488722U, which discloses a fixed-mobile combined foam fire extinguishing device. This device includes a handheld water outlet pipe module, comprising a hose adapter, a flow pipe, a foam rod, and an outlet pipe section connected sequentially along the water outlet direction. The hose adapter is used for detachable connection with a hose. The outlet pipe section is a circular pipe structure, its inner cavity divided into a tapering cavity, an expansion zone, and an outlet chamber connected sequentially along the water outlet direction. The diameter of the tapering cavity gradually decreases along the water outlet direction. Both the expansion zone and the outlet chamber are cylindrical cavities. The diameter of the expansion zone is larger than the diameter of the outlet end of the tapering cavity. The outlet pipe section has several suction holes evenly distributed circumferentially and connected to the expansion zone. The diameter of the outlet chamber is smaller than the diameter of the expansion zone. The outlet of the outlet chamber is the outlet of the outlet pipe section. This invention aims to solve the problems of low efficiency and short foam duration in Class A fire extinguishing equipment used in high-rise buildings.

[0004] Existing devices have some drawbacks during use. For example, the design of the air intake in the above scheme is to create negative pressure in the expansion zone to draw in outside air to form foam. However, the environment in high-rise buildings is complex. During the fire extinguishing process, there will be dust, impurities and other pollutants in the air. These pollutants will enter the expansion zone through the air intake and contaminate the foam mixture, reducing the stability and quality of the foam. The contaminated foam cannot effectively cover the fire source, affecting the suffocation and isolation effects, thereby reducing the fire extinguishing efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a solid-moving foam fire extinguishing device that solves the problem that during the fire extinguishing process, dust, impurities and other pollutants will enter the expansion zone through the air intake, contaminate the foam mixture, reduce the stability and quality of the foam, and the contaminated foam cannot effectively cover the fire source, affecting the suffocation and isolation effect, thereby reducing the fire extinguishing efficiency.

[0006] This utility model provides the following technical solution: a fixed-moving foam fire extinguishing device, including a hose adapter, a flow pipe threadedly connected to the outlet end of the hose adapter, a flow cavity opened inside the flow pipe, a foam rod cylinder threadedly connected to the outer side of the end of the flow pipe away from the hose adapter, a foam cavity opened inside the foam rod cylinder, the flow cavity and the foam cavity are connected, and a water outlet pipe section threadedly connected to the outer side of the end of the foam rod cylinder away from the flow pipe, the water outlet pipe section having a water outlet structure inside.

[0007] As a preferred embodiment of the above technical solution, the water outlet structure includes a gradually contracting cavity located inside the water outlet pipe section near the foam rod cylinder. The gradually contracting cavity is connected to the foam cavity. An expansion cavity is formed on the inner wall of the gradually contracting cavity away from the foam rod cylinder. The expansion cavity is connected to the gradually contracting cavity. A water outlet cavity is formed on the inner wall of the expansion cavity away from the gradually contracting cavity. The water outlet cavity is connected to the expansion cavity. Four first air intake holes are formed in a circular array on the outer side of the water outlet pipe section corresponding to the expansion cavity. A rectangular mounting base is fixedly fitted on the outer side of the water outlet pipe section corresponding to the four first air intake holes. A second air intake hole is formed on each of the four end faces of the rectangular mounting base corresponding to the four first air intake holes. The four second air intake holes are connected to the expansion cavity through the corresponding first air intake holes. A filter assembly is provided on the rectangular mounting base.

[0008] As a preferred embodiment of the above technical solution, the gradually contracting cavity is cone-shaped with a wider inlet near the foam cavity and a narrower outlet near the expansion cavity. The size of the expansion cavity is larger than the outlet size of the gradually contracting cavity, and the size of the expansion cavity is larger than the water outlet cavity.

[0009] As a preferred embodiment of the above technical solution, the filter assembly includes mounting blocks that are fixedly connected to the four end faces of the rectangular mounting base. Each of the four mounting blocks has a mounting hole through it at the position corresponding to the second air intake hole. Each of the four mounting holes has two symmetrical moving grooves on the inner sidewall of the end away from the rectangular mounting base. Each of the eight moving grooves has a connecting groove on the inner sidewall of the end close to the rectangular mounting base. Each of the eight connecting grooves has a locking groove on the inner sidewall of the end away from the rectangular mounting base.

[0010] As a preferred embodiment of the above technical solution, the filter assembly includes annular mounting grooves respectively opened on the four end faces of the rectangular mounting base. Springs are fixedly connected to the inner walls of the four annular mounting grooves near the rectangular mounting base. Annular top plates are fixedly connected to the ends of the four springs away from the rectangular mounting base. Mounting frames are slidably sleeved on the inner sides of the four mounting holes. Two movable blocks are symmetrically fixedly connected to the outer walls of the four mounting frames. The eight movable blocks are slidably connected to and cooperate with the corresponding moving grooves, connecting grooves, and slots. Metal filter screens are sleeved on the inner sides of the four mounting frames.

[0011] As a preferred embodiment of the above technical solution, a manual regulating valve is installed on the flow pipe.

[0012] As a preferred embodiment of the above technical solution, a spiral guide vane is installed inside the foam cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, by installing an installation frame with a metal filter screen, and through the cooperation of movable blocks and components such as movable slots, connecting slots, and slots, the installation frame is securely installed in the installation hole. The metal filter screen on the installation frame effectively prevents dust, impurities, and other pollutants floating in the air from entering the first and second air intake holes, ensuring the purity of the foam mixture and the fire extinguishing effect of the foam. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a fixed-movement foam fire extinguishing device;

[0016] Figure 2 A schematic diagram of the water outlet structure of a solid-movement combined foam fire extinguishing device;

[0017] Figure 3 A schematic diagram of the filter assembly structure of a solid-movement combined foam fire extinguishing device;

[0018] Figure 4 This is a schematic diagram of the explosion structure of a foam fire extinguishing device that combines solid-movement extinguishing and displacement extinguishing methods.

[0019] In the diagram: 10. Water hose adapter; 11. Flow pipe; 12. Flow chamber; 13. Foam rod; 14. Foam chamber; 15. Water outlet section; 2. Water outlet structure; 201. Gradual contraction chamber; 202. Expansion chamber; 203. Water outlet chamber; 204. First air intake hole; 205. Rectangular mounting base; 206. Second air intake hole; 3. Filter assembly; 301. Mounting block; 302. Mounting hole; 303. Moving groove; 304. Connecting groove; 305. Slot; 306. Annular mounting groove; 307. Spring; 308. Annular top plate; 309. Mounting frame; 310. Metal filter screen; 311. Moving block; 40. Manual regulating valve; 50. Spiral guide vane. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Example

[0022] like Figures 1-4As shown, this utility model provides a technical solution: a fixed-moving foam fire extinguishing device, including a hose adapter 10, with a flow pipe 11 threadedly connected to the outlet end of the hose adapter 10. A flow cavity 12 is formed inside the flow pipe 11. A foam rod 13 is threadedly connected to the outer side of the end of the flow pipe 11 away from the hose adapter 10. A foam cavity 14 is formed inside the foam rod 13, and the flow cavity 12 and the foam cavity 14 are connected. A water outlet section 15 is threadedly connected to the outer side of the end of the foam rod 13 away from the flow pipe 11. A water outlet structure 2 is formed inside the water outlet section 15, including a gradually contracting cavity 201 formed inside the water outlet section 15 near the foam rod 13. The gradually contracting cavity 201 is connected to the foam cavity 14. An expansion cavity 202 is formed on the inner wall of the side away from the foam rod cylinder 13. The expansion cavity 202 is connected to the gradually contracting cavity 201. A water outlet cavity 203 is formed on the inner wall of the side of the expansion cavity 202 away from the gradually contracting cavity 201. The water outlet cavity 203 is connected to the expansion cavity 202. Four first air intake holes 204 are formed in a ring array on the outer side of the water outlet pipe section 15 corresponding to the position of the expansion cavity 202. A rectangular mounting base 205 is fixedly sleeved on the outer side of the water outlet pipe section 15 corresponding to the position of the four first air intake holes 204. A second air intake hole 206 is formed on each of the four end faces of the rectangular mounting base 205 corresponding to the position of the four first air intake holes 204. The four second air intake holes 206 are connected to the expansion cavity 202 through the corresponding first air intake holes 204. A filter assembly 3 is provided. The converging chamber 201 is cone-shaped with a wider inlet near the foam chamber 14 and a narrower outlet near the expansion chamber 202. The expansion chamber 202 is larger than the outlet size of the converging chamber 201 and larger than the outlet chamber 203. A manual regulating valve 40 is installed on the flow pipe 11. A spiral guide vane 50 is installed inside the foam chamber 14. In actual use, the hose adapter 10 is detachably connected to the hose, and the manual regulating valve 40 on the flow pipe 11 is manually opened to adjust the water flow speed to an appropriate level. The water flows through the flow pipe 11 into the foam chamber 14, forming a foam mixture. When the foam mixture passes through the spiral guide vane 50, its flow direction is guided by the guide vane, forming a spiral or... The orderly, cyclical flow helps reduce turbulence and makes the foam mixture flow more smoothly. The foam mixture enters the gradually contracting chamber 201 of the outlet pipe section 15. Due to the conical design of the contracting chamber 201, the foam mixture is guided towards the center, gradually increasing its velocity and pressure. When the water flows into the expansion chamber 202, the sudden change in velocity creates a negative pressure at the air intake. This negative pressure effect draws outside air into the expansion chamber 202 through the first air intake 204 and the second air intake 206, further mixing with the foam mixture. The drawn-in air and foam mixture are thoroughly mixed within the expansion chamber 202, forming a more stable and finer foam with better foaming effect. Finally, the foam mixture enters the outlet chamber 203.Due to the increased flow rate and air mixing, the foam mixture can be sprayed out more quickly through the outlet chamber 203 for fire extinguishing. After fire extinguishing, the manual regulating valve 40 is closed, and the hose adapter 10 is detached from the hose. During fire extinguishing, dust, impurities, and other pollutants may float in the air. The filter assembly 3 prevents these pollutants from entering the first and second air intake ports 204 and 206, ensuring the foaming effect of the equipment.

[0023] As one implementation method in this embodiment, such as Figure 1 , Figure 3 and Figure 4As shown, the filter assembly 3 includes mounting blocks 301 fixedly connected to the four end faces of the rectangular mounting base 205. Each of the four mounting blocks 301 has a mounting hole 302 corresponding to the position of the second air intake 206. Two symmetrical moving grooves 303 are formed on the inner sidewall of the end of each mounting hole 302 away from the rectangular mounting base 205. Connecting grooves 304 are formed on the inner sidewall of the end of each of the eight moving grooves 303 near the rectangular mounting base 205. A retaining groove 305 is formed on the inner sidewall of the end of each of the eight connecting grooves 304 away from the rectangular mounting base 205. The filter assembly 3 also includes annular mounting grooves 306 formed on the four end faces of the rectangular mounting base 205. Each of the four annular mounting grooves 306 has a fixedly connected... Springs 307, each of the four springs 307 has an annular top plate 308 fixedly connected to one end away from the rectangular mounting base 205. Mounting frames 309 are slidably fitted inside the four mounting holes 302. Two movable blocks 311 are symmetrically fixedly connected to the outer walls of each of the four mounting frames 309. The eight movable blocks 311 are slidably connected to and cooperate with the corresponding movable grooves 303, connecting grooves 304, and slots 305. Metal filter screens 310 are fitted inside the four mounting frames 309. In actual use, the mounting frame 309 is aligned with the mounting hole 302 on the mounting block 301, so that the two movable blocks 311 are aligned with the corresponding movable grooves 303. The mounting frame 309 is then moved along... The inner wall of the mounting hole 302 slides slowly, allowing the mounting frame 309 to gradually enter the mounting hole 302. During this process, the mounting frame 309 presses against the annular top plate 308, causing the spring 307 to compress. Furthermore, during the entry of the mounting frame 309 into the mounting hole 302, the two movable blocks 311 on it move along the corresponding movable grooves 303 to the corresponding connecting grooves 304. When the two movable blocks 311 reach the corresponding connecting grooves 304, the mounting frame 309 is rotated, causing the two movable blocks 311 to move and rotate to the corresponding slots 305. When the two movable blocks 311 reach the corresponding slots 305, the force applied to the mounting frame 309 is released. When the spring 307 releases its elastic force, it pushes the annular top plate 308, causing the mounting frame 309 to move. The movement of the mounting frame 309 causes the two moving blocks 311 to engage with the corresponding slots 305. Following the above steps, the four mounting frames 309 are placed one by one into the corresponding mounting holes 302. The metal filter 310 prevents airborne dust, impurities, and other contaminants from entering the first air intake 204 and the second air intake 206, ensuring the purity of the foam mixture and the fire extinguishing effect of the foam. When the metal filter 310 needs to be replaced due to blockage or contamination, a new mounting frame 309 is prepared, ensuring that the metal filter 310 on it is intact. Then, the mounting frame 309 is pressed to move towards the annular top plate 308 and compress the annular top plate 308.When the annular top plate 308 is compressed, it compresses the spring 307. The movement of the mounting frame 309 causes the two movable blocks 311 to disengage from their corresponding slots 305. When the two movable blocks 311 disengage from their corresponding slots 305 and move to their corresponding connecting slots 304, rotating the mounting frame 309 causes the two movable blocks 311 to rotate along their corresponding connecting slots 304 to their corresponding moving slots 303. When the two movable blocks 311 move to their corresponding moving slots 303, the spring 307 releases its elastic force, pushing the annular top plate 308 to move the mounting frame 309. This allows the mounting frame 309 to be easily removed from the mounting hole 302. Then, the new mounting frame 309 and its metal filter screen 310 are installed according to the installation steps.

[0024] Working principle: Align the mounting frame 309 with the mounting hole 302 on the mounting block 301, aligning the two movable locking blocks 311 with the corresponding movable slots 303. Slowly slide the mounting frame 309 along the inner wall of the mounting hole 302, allowing it to gradually enter the mounting hole 302. During this process, the mounting frame 309 will press against the annular top plate 308, causing the spring 307 to compress. Furthermore, during this process, the two movable locking blocks 311 on the mounting frame 309 will move along the corresponding movable slots 303 to the corresponding connecting slots 304. When the two movable locking blocks 311 reach the corresponding connecting slots 304, rotate the mounting frame 309 to move the two movable locking blocks... Block 311 moves and rotates to the corresponding slot 305 position. When the two moving blocks 311 move and rotate to the corresponding slot 305 position, the force applied to the mounting frame 309 is released. At this time, the spring 307 releases its elastic force to push the annular top plate 308, causing the mounting frame 309 to move. The movement of the mounting frame 309 causes the two moving blocks 311 to engage in the corresponding slot 305. Following the above steps, the four mounting frames 309 are placed one by one into the corresponding mounting holes 302. The hose adapter 10 is detachably connected to the hose. The manual regulating valve 40 on the flow pipe 11 is manually opened to adjust the water flow rate to an appropriate level. The water flows through the flow pipe 11 into the foam chamber 14, forming a foam mixture. When the foam mixture passes through the spiral guide plate 50, its... The flow direction is guided by the guide vanes, forming a spiral or orderly circulating flow. This orderly flow pattern helps reduce turbulence and makes the foam mixture flow more smoothly. The foam mixture enters the gradually contracting cavity 201 of the outlet pipe section 15. Due to the conical design of the gradually contracting cavity 201, the foam mixture is guided to converge towards the center, the flow velocity gradually increases, and the pressure increases. When the water flows into the expansion cavity 202, due to the sudden change in flow velocity, a negative pressure is formed at the air intake. This negative pressure effect causes outside air to be drawn into the expansion cavity 202 through the first air intake 204 and the second air intake 206, and further mixed with the foam mixture. The drawn-in air and the foam mixture are fully mixed in the expansion cavity 202, forming a more stable and fine foam. The foam mixture produces a better foaming effect. The foam mixture enters the outlet chamber 203 last. Due to the increased flow rate and air mixing, the foam mixture can be sprayed out of the outlet chamber 203 more quickly for fire extinguishing. After fire extinguishing, the manual regulating valve 40 is closed, and the hose adapter 10 is removed from the hose. During fire extinguishing, dust, impurities, and other pollutants float in the air. The metal filter 310 prevents these pollutants from entering the first and second air intake ports 204 and 206, ensuring the purity of the foam mixture and the fire extinguishing effect of the foam. When the metal filter 310 needs to be replaced due to blockage or contamination, a new mounting frame 309 is prepared, ensuring that the metal filter 310 on it is intact.Next, press the mounting frame 309 to move it towards the annular top plate 308 and compress the annular top plate 308. The compression of the annular top plate 308 will compress the spring 307. The movement of the mounting frame 309 causes the two movable blocks 311 to disengage from their corresponding slots 305. When the two movable blocks 311 disengage from their corresponding slots 305 and move to their corresponding connecting slots 304, rotate the mounting frame 309 to rotate the two movable blocks 311 along their corresponding connecting slots 304 to their corresponding movable slots 303. When the two movable blocks 311 move to their corresponding movable slots 303, the spring 307 will release its elastic force to push the annular top plate 308, causing the mounting frame 309 to move. This allows the mounting frame 309 to be easily removed from the mounting hole 302. Then, install the new mounting frame 309 and its metal filter screen 310 according to the installation steps.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A fixed-moving foam fire extinguishing device, comprising a hose adapter (10), characterized in that: The outlet end of the hose adapter (10) is threaded with a flow pipe (11). The flow pipe (11) has a flow cavity (12) inside. A foam rod cylinder (13) is threaded on the outer side of the end of the flow pipe (11) away from the hose adapter (10). A foam cavity (14) is opened inside the foam rod cylinder (13). The flow cavity (12) and the foam cavity (14) are connected. A water outlet section (15) is threaded on the outer side of the end of the foam rod cylinder (13) away from the flow pipe (11). A water outlet structure (2) is opened inside the water outlet section (15).

2. The fixed-movement combined foam fire extinguishing device according to claim 1, characterized in that: The water outlet structure (2) includes a gradually contracting cavity (201) located inside the water outlet pipe section (15) near the foam rod cylinder (13). The gradually contracting cavity (201) is connected to the foam cavity (14). An expansion cavity (202) is formed on the inner wall of the gradually contracting cavity (201) away from the foam rod cylinder (13). The expansion cavity (202) is connected to the gradually contracting cavity (201). A water outlet cavity (203) is formed on the inner wall of the expansion cavity (202) away from the gradually contracting cavity (201). The water outlet cavity (203) is connected to the expansion cavity (202). The water outlet pipe section (15) Four first air intake holes (204) are provided in a ring array on the outer side corresponding to the expansion cavity (202). A rectangular mounting base (205) is fixedly sleeved on the outer side of the water outlet pipe section (15) corresponding to the four first air intake holes (204). A second air intake hole (206) is provided on each of the four end faces of the rectangular mounting base (205) corresponding to the four first air intake holes (204). The four second air intake holes (206) are respectively connected to the expansion cavity (202) through the corresponding first air intake holes (204). A filter assembly (3) is provided on the rectangular mounting base (205).

3. A fixed-movement combined foam fire extinguishing device according to claim 2, characterized in that: The converging chamber (201) is cone-shaped with a wider inlet near the foam chamber (14) and a narrower outlet near the expansion chamber (202). The size of the expansion chamber (202) is larger than the outlet size of the converging chamber (201) and the size of the expansion chamber (202) is larger than the water outlet chamber (203).

4. A fixed-movement combined foam fire extinguishing device according to claim 2, characterized in that: The filter assembly (3) includes mounting blocks (301) fixedly connected to the four end faces of the rectangular mounting base (205). Mounting holes (302) are provided through the four mounting blocks (301) at the positions corresponding to the second air intake holes (206). Two moving grooves (303) are symmetrically opened on the inner side wall of the end of the four mounting holes (302) away from the rectangular mounting base (205). Connecting grooves (304) are provided on the inner side wall of the end of the eight moving grooves (303) close to the rectangular mounting base (205). Card slots (305) are provided on the inner side wall of the end of the eight connecting grooves (304) away from the rectangular mounting base (205).

5. A fixed-movement combined foam fire extinguishing device according to claim 4, characterized in that: The filter assembly (3) includes annular mounting grooves (306) respectively opened on the four end faces of the rectangular mounting base (205). Springs (307) are fixedly connected to the inner wall of the four annular mounting grooves (306) near the rectangular mounting base (205). Annular top plates (308) are fixedly connected to the end of the four springs (307) away from the rectangular mounting base (205). Mounting frames (309) are slidably sleeved on the inner side of the four mounting holes (302). Two movable blocks (311) are symmetrically fixedly connected to the outer wall of the four mounting frames (309). The eight movable blocks (311) are slidably connected to the corresponding movable grooves (303), connecting grooves (304) and card slots (305) respectively and cooperate with the corresponding movable grooves (303), connecting grooves (304) and card slots (305). Metal filter screens (310) are sleeved on the inner side of the four mounting frames (309).

6. A fixed-movement combined foam fire extinguishing device according to claim 1, characterized in that: A manual regulating valve (40) is installed on the flow pipe (11).

7. A fixed-movement combined foam fire extinguishing device according to claim 1, characterized in that: A spiral guide vane (50) is installed inside the foam cavity (14).

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