Compressed air foam fire extinguishing device and use method

Abstract

The invention discloses a compressed air foam fire extinguishing device and a use method, and aims to provide a compressed air foam fire extinguishing device capable of quickly replacing a storage device after foam liquid is used up and a use method. The device comprises a foam release box, an air compressor, a mixing pipe, a telescopic assembly and a spray head, a quick release assembly is installed at one end of the foam release box, the foam release box is detachably connected with one end of the mixing pipe through the quick release assembly, a pressurizing pipe is installed on the mixing pipe and communicated with the mixing pipe, and the pressurizing pipe is communicated with the air compressor. The other end of the mixing pipe is connected with one end of the telescopic assembly, and the other end of the telescopic assembly is detachably connected with the spray head. The foam liquid storage device has the beneficial effects that after foam liquid is used up, the storage device can be rapidly replaced, the foam liquid storage device can be rapidly connected with a release pipe, the sealing performance can be improved, the air inlet amount of compressed air can be conveniently changed, gas and liquid can be preliminarily mixed, and the liquid outlet position can be changed.

Description

Technical Field

[0001] The present invention relates to the technical field related to fire extinguishing devices, and in particular to a compressed air foam fire extinguishing device and a use method thereof. Background Art

[0002] Fire is one of the most common disasters that threaten social development and public safety. Firefighting technology is the guarantee for protecting people's property and life safety. Compressed air fire extinguishing foam, that is, compressed air foam, is a homogeneous foam produced by fully mixing water, foam liquid and air under a certain pressure. Compressed air foam can quickly cover the fire source, isolate oxygen, and achieve the effect of rapid fire extinguishing. At the same time, the moisture in the foam can also effectively reduce the temperature of the fire scene and prevent the spread of the fire. However, most of the existing fire extinguishing devices adopt a hybrid type, and the devices used to store foam are mostly fixedly connected, which is not easy to replace in time when replacement is needed, resulting in failure to extinguish the fire in time.

[0003] Chinese patent authorization announcement number: CN222517619U, authorization announcement date February 25, discloses a carbon dioxide foam fire extinguishing system, characterized in that it includes a foam stock liquid storage tank, a fire water storage tank, a foaming mixing and stirring device, a mixing pipe, a carbon dioxide storage tank and a fire sprinkler water monitor, the foaming mixing and stirring device is provided with a first liquid inlet pipe, a second liquid inlet pipe and a foam liquid outlet pipe, and the mixing pipe is provided with a liquid inlet, an air inlet and a liquid outlet; the foam stock liquid storage tank is connected to the first liquid inlet pipe through a first delivery pipeline, and the first delivery pipeline is provided with a first solenoid valve, a first metering pump and The first one-way valve, the fire water storage tank is connected to the second liquid inlet pipe through the second delivery pipe, and the second delivery pipe is provided with a second solenoid valve, a second metering pump and a second one-way valve in sequence; the foam liquid outlet pipe is connected to the liquid inlet through the foam delivery pipe, and the foam delivery pipe is provided with a foam solenoid valve, a foam pump and a foam one-way valve in sequence, the carbon dioxide storage tank is connected to the air inlet through the gas delivery pipe, and the gas delivery pipe is provided with a pressure reducing valve, a gas solenoid valve and a gas one-way valve in sequence, the liquid outlet is connected to the fire sprinkler water cannon through the gas foam output pipe, and the gas foam output pipe is provided with an output solenoid valve and an output pump. The shortcoming of the utility model is that the foam stock liquid storage tank of the device is fixedly connected to the foam delivery pipe, and it is not easy to replace when the foam stock liquid is insufficient. Summary of the invention

[0004] The present invention aims to overcome the drawback of the prior art that the foam liquid storage tank is difficult to replace when the stock is insufficient, and provides a compressed air foam fire extinguishing device and a method of use thereof, which can quickly replace the storage device after the foam liquid is used up.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A compressed air foam fire extinguishing device, comprising a foam release box, an air compressor, a mixing pipe, a telescopic assembly and a nozzle. A quick-release assembly is installed at one end of the foam release box. The foam release box is detachably connected to one end of the mixing pipe through the quick-release assembly. A pressure pipe is installed on the mixing pipe. The pressure pipe is communicated with the mixing pipe, and the pressure pipe is communicated with the air compressor. The other end of the mixing pipe is connected to one end of the telescopic assembly, and the other end of the telescopic assembly is detachably connected to the nozzle.

[0006] The foam concentrate is stored in the foam release box. The foam release box is a device for releasing fire extinguishing foam in the prior art. The foam release box is connected to the mixing pipe through the quick-release assembly. The foam release box and the mixing pipe can be quickly disassembled through the quick-release assembly. The foam release box releases the foam liquid into the mixing pipe. Then, the pressure pipe on the mixing tank is connected to the air compressor, and compressed air is provided to the mixing tank through the air compressor. The compressed air fully refines the aqueous foam solution and releases it to the atmospheric pressure state. The compressed air expands instantaneously to generate uniform foam. After the compressed air and the foam liquid are mixed in the mixing pipe, they are ejected from the nozzle after passing through the telescopic assembly. The telescopic assembly can flexibly drive the nozzle to move, facilitating the alignment of the nozzle with the fire source to achieve the fire extinguishing effect. The nozzle is detachably connected to the telescopic assembly, and the nozzle can be quickly installed. After the foam liquid in the foam release box is used up, the mixing pipe and the foam release box are quickly separated through the quick-release assembly, so as to replace the new foam release box, achieving the purpose of quickly replacing the storage device after the foam liquid is used up.

[0007] Preferably, a release pipe is installed on the foam release box. The release pipe is communicated with the foam release box. One end of the release pipe is installed with a fitting ring, and one end of the mixing pipe is installed with a plugging ring. The fitting ring is in contact with the plugging ring. A plurality of insertion rods distributed in a circumferential manner are arranged on the fitting ring. One end of the insertion rod is connected to the fitting ring, and the other end of the insertion rod penetrates through the plugging ring and is located on the other side of the plugging ring. A fixing hole is arranged at the end of the insertion rod penetrating through the plugging ring. A plurality of quick-release components are installed on the side surface of the plugging ring. The quick-release components correspond to the insertion rods one by one. The quick-release component includes a mounting frame, a pneumatic cylinder I, and a fixing block. The mounting frame is installed on the plugging ring, the pneumatic cylinder I is installed on the mounting frame, the pneumatic end of the pneumatic cylinder I is connected to the fixing block, the cross-sectional shape of the fixing block is triangular, and the fixing block corresponds to the fixing hole. The foam release box releases foam through the release pipe. The fitting ring installed on the release pipe is in contact with the plugging ring at one end of the mixing pipe. Then, foam liquid is released into the mixing tank through the release pipe. After the fitting ring is in contact with the plugging ring, the insertion rods distributed in a circumferential manner on the fitting ring penetrate through the plugging ring to limit the fitting ring. Then, the quick-release components on the installed plugging ring act. The pneumatic cylinder I installed on the mounting frame acts to drive the fixing block to descend. The triangular fixing block descends and inserts into the fixing hole of the insertion rod. As the fixing block gradually descends, the inclined surface of the fixing block placed in the fixing hole gradually pushes the insertion rod to move. The movement of the insertion rod drives the fitting ring and the plugging ring to fit tightly, improving the sealing effect. To release the fixation of the fitting ring, only need to lift the pneumatic cylinder to drive the fixing block away from the fixing hole to release the fixation of the insertion rod. Such a design can quickly connect the release pipe.

[0008] Preferably, a sealing pipe is arranged inside the release pipe. One end of the sealing pipe is connected to the release pipe, and the other end of the sealing pipe is located inside the mixing pipe. The shape of the sealing pipe is frustum-shaped. The end with a smaller diameter of the sealing pipe is located inside the mixing pipe. A sealing ring is installed on the inner wall of the mixing pipe, and the sealing ring is in contact with the surface of the sealing pipe. In order to improve the sealing performance between the release pipe and the mixing pipe, a sealing pipe is installed on the inner wall of the release pipe. One end of the sealing pipe is inserted into the mixing pipe. During the process that the insertion rod drives the fitting ring to move and squeeze against the plugging ring, the sealing pipe gradually inserts into the mixing tank. Since the shape of the sealing pipe is conical, the diameter of the conical sealing pipe entering the mixing pipe gradually increases, and then it squeezes the sealing ring installed in the mixing pipe. The outer side surface of the sealing pipe is in close contact with the sealing ring, improving the sealing degree between the release pipe and the mixing tank. Such a design can improve the sealing performance.

[0009] Preferably, recovery blocks are installed on both sides of the pressure pipe. A recovery groove is provided on the side of the recovery block facing the pressure pipe. The recovery groove communicates with the pressure pipe. A necking component is provided in the recovery groove. The necking component includes a moving plate and an electric push rod. The electric push rod is placed in the recovery groove. One end of the electric push rod is connected to the moving plate. The cross-sectional shape of the moving plate is semi-circular, and the moving plate matches the pressure pipe. The pressure pipe is connected to an air compressor, which is a prior art device used to release compressed gas into the mixing pipe. To facilitate increasing the intake volume of compressed air, a necking component is installed in the pressure pipe. The necking component changes the intake hole size of the extrusion pipe to thereby change the intake volume of compressed gas. Recovery blocks are installed on both sides of the pressure pipe, and the necking component is installed in the recovery groove provided on the recovery block. Necking components are installed in the recovery grooves on both sides to neck the pressure pipe from both sides. The moving plate of the necking component corresponds to half of the pressure pipe. The moving block is driven to move by the electric push rod installed in the recovery groove. One end of the moving block is placed in the recovery groove. The moving block can be completely retracted into the recovery groove or completely pushed out by the electric push rod. The semi-circular moving block can perform necking treatment on the pressure pipe. Such a design facilitates changing the intake volume of compressed air.

[0010] Preferably, a stabilizing ball is installed on the mixing pipe. A stabilizing cavity is provided on the stabilizing ball. The stabilizing cavity communicates with the mixing pipe. After the compressed air and the foam liquid are mixed in the mixing pipe, they enter the stabilizing cavity of the stabilizing ball together. After the foam liquid stays in a relatively large space, the compressed air and the foam liquid can be initially mixed, and the liquid can also flow out stably at the other end of the stabilizing cavity. Such a design can improve the stability of the liquid output.

[0011] Preferably, a rotating assembly is installed inside the stable ball. The rotating assembly includes a mounting ring and a rotating ring. The mounting ring is placed inside the stable ball and connected to the inner wall of the stable ball. The rotating ring is in contact with the inner side of the mounting ring. A clamping ring is installed on the outer side of the rotating ring. A clamping groove is provided on the inner side of the mounting ring. The rotating ring is rotationally connected to the mounting ring through the cooperation of the clamping ring and the clamping groove. A number of impact plates are evenly distributed on the rotating ring. The shape of the impact plate is spiral. One end of the impact plate is connected to the inner side of the rotating ring. The other end of the impact plate is provided with a support column. The support column is located at the axis of the rotating ring. One end of each impact plate is connected to the support column. The foam liquid and the compressed air are initially mixed in the stable hole. In order to improve the mixing efficiency, a rotating assembly is installed in the stable cavity. The compressed air and the foam liquid in the stable cavity are mixed by stirring through the rotating assembly. The mounting ring of the rotating assembly is in contact with the side of the stable cavity on the inner wall of the stable ball. The rotating ring is installed on the inner ring of the mounting ring. The rotating ring is rotationally connected to the mounting ring through the cooperation of the clamping groove and the clamping ring. The rotating ring rotates along the annular clamping groove. A number of evenly distributed impact plates are installed on the rotating ring. The spiral impact plates are installed on the rotating plate to receive liquid impact. The inner sides of the impact plates are connected together through support columns to fix the impact plates and ensure the stability of the impact plates. The liquid impacts on the impact plates, driving the spiral impact plates to rotate. The rotation of the impact plates can mix the liquid and the compressed air in the stable cavity and form moving foam. Such a design can initially mix the gas and liquid.

[0012] Preferably, the telescopic assembly includes a rear plate, a telescopic tube and a front plate. An insertion ring is installed on one side of the rear plate. The insertion ring is placed inside the mixing tube and connected to the mixing tube. One end of the telescopic tube is connected to the rear plate. The other end of the telescopic tube is connected to the front plate. The telescopic assembly is installed at the liquid outlet end of the mixing tube. The telescopic assembly can change the foam output position to facilitate alignment with the fire source. The rear plate of the telescopic assembly is in contact with the end face of the mixing tube through the connection of the insertion ring and the mixing tube. The front plate and the rear plate are connected through the telescopic tube. The telescopic tube is made of a flexible and telescopic material. The front plate can be moved through the deformation ability of the telescopic tube. Such a design can change the liquid outlet position.

[0013] Preferably, fixing columns are installed on both sides of the front plate. One end of each fixing column is connected to the front plate, and the other end of each fixing column penetrates through the rear plate and is located on the other side of the rear plate. A sliding ring is installed on the rear plate, and a sliding block is installed on the sliding ring. A sliding groove is provided on the rear plate. The sliding ring is slidably connected to the rear plate through the cooperation of the sliding block and the sliding groove. Fixing rods are installed at both ends of the sliding ring, and the fixing rods correspond to the fixing columns one by one. One end of each fixing rod penetrates through the fixing column and is located on the other side of the fixing column. A pulling plate is installed on the sliding ring. When not in use, the telescopic assembly needs to be fixed to facilitate the transfer of the device position. Fixing the distance between the front plate and the rear plate can complete the fixation of the multi-telescopic tube. After retracting the telescopic tube, the fixing column of the front plate penetrates through the rear plate, and the front plate is limited by the fixing column. Then, the sliding ring is pushed to move on the rear plate along the sliding groove. The fixing rod on the end face of the sliding ring passes through the hole on the fixing column, and one end of the fixing column is fixed on one side of the rear plate, thereby fixing the fixing column. A pulling plate is installed on the sliding ring for easy pulling. Such a design facilitates the fixation of the telescopic assembly.

[0014] Preferably, an insertion connection tube is installed on the front plate. A plurality of separation plates are provided on the spray head and are distributed in a circular pattern. One end of each separation plate is connected to the spray head, and the other end of each separation plate is located inside the insertion connection tube and fits against the inner wall of the insertion connection tube. A raised ball is installed on each separation plate. The separation plate is detachably connected to the insertion connection tube through the raised ball. A taking plate is provided on the front plate. Both ends of the taking plate are respectively connected to the fixing columns on both sides. A taking ring is installed on the taking plate. An insertion connection tube is installed on the front plate of the telescopic assembly. The insertion connection tube is used to install the spray head. The separation plate on one side of the spray head is inserted into the insertion connection tube and fits against the inner wall of the insertion connection tube. The circularly distributed separation plates can ensure the stability of the spray head. A raised ball is installed on the side where the separation plate fits against the insertion connection tube. A groove corresponding to the raised ball is provided on the insertion connection tube. The spray head can be fixed on the insertion connection tube through the cooperation of the raised ball and the groove. Moreover, a taking plate is installed on the front plate. Both ends of the taking plate are respectively connected to the fixing columns on both sides. Then, the front plate and the spray head can be moved through the taking ring on the taking plate. Such a design facilitates the movement of the spray head.

[0015] The present invention also provides a method for using a compressed air foam fire extinguishing device, which specifically includes the following steps: Step 1: Fit the fitting ring on the release pipe of the foam release box with the insertion ring of the mixing pipe. The insertion rod on the fitting ring passes through the insertion ring, and then the first pneumatic cylinder drives the fixed block to descend, driving the insertion rod to move, completing the fitting of the fitting ring and the insertion ring. At this time, the release pipe is hermetically connected to the mixing pipe through the fitting of the sealing pipe and the sealing ring. Step 2: Connect the pressurizing pipe to the air outlet end of the air compressor, and then connect the spray head to the insertion connection tube of the telescopic assembly. Step 3: The foam release box releases foam liquid into the mixing pipe through the release pipe, mixes with compressed gas in the mixing pipe, and then enters the stabilizing sphere, where it impacts the rotating assembly to rotate, preliminarily mixing the gas and liquid. Step 4: The mixed foam liquid is released from the nozzle through the telescopic assembly. At this time, after releasing the fixation of the telescopic assembly, the nozzle is moved by holding the ring to extinguish the fire. Step 5: When the liquid in the foam release box is insufficient, the pneumatic cylinder 1 drives the fixed block away from the insertion rod to release the fixation of the release pipe, and then the foam release box can be replaced.

[0016] The beneficial effects of the present invention are: the storage device can be quickly replaced after the foam liquid is used up, the release pipe can be quickly connected, the sealing performance can be improved, the intake volume of compressed air can be easily changed, the liquid discharge stability can be improved, the gas and liquid can be preliminarily mixed, the liquid discharge position can be changed, the telescopic assembly can be easily fixed, and the nozzle can be easily moved. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 the sectional view of Figure 3 is Figure 1 the schematic structural diagram of the foam release box in Figure 4 is Figure 1 the sectional view of the mixing pipe in Figure 5 is Figure 1 the schematic structural diagram of the quick-release component in Figure 6 is Figure 2 the schematic structural diagram of the necking component in Figure 7 is Figure 2 the exploded view of the rotating component in Figure 8 is Figure 1 the schematic structural diagram of the telescopic component in Figure 9 is Figure 8 the schematic structural diagram of the sliding ring in Figure 10 is Figure 1 the schematic structural diagram of the nozzle in

[0018] In the figure: 1. Foam release box; 11. Release pipe; 12. Fitting ring; 13. Insertion rod; 14. Fixing hole; 15. Sealing pipe; 2. Air compressor; 22. Reducing port assembly; 23. Moving plate; 24. Electric push rod; 3. Mixing pipe; 31. Pressurizing pipe; 32. Inserting ring; 33. Sealing ring; 34. Recycling block; 35. Recycling groove; 36. Stabilizing ball; 37. Stabilizing cavity; 4. Telescopic assembly; 41. Rear plate; 42. Telescopic pipe; 43. Front plate; 44. Inserting ring; 45. Fixing column; 46. Sliding groove; 47. Inserting and connecting pipe; 48. Taking plate; 49. Taking ring; 5. Sprinkler head; 51. Separation plate; 52. Protruding ball; 6. Quick-release assembly; 61. Mounting frame; 62. Pneumatic cylinder I; 63. Fixed block; 7. Rotating assembly; 71. Mounting ring; 72. Rotating ring; 73. Clamping ring; 74. Clamping groove; 75. Impact plate; 76. Support column; 8. Sliding ring; 81. Sliding block; 82. Fixed rod; 83. Pulling plate. Detailed implementation manner

[0019] The present invention will be further described below in conjunction with the accompanying drawings and the detailed implementation manner.

[0020] As Figure 1 、 Figure 2 shown in the embodiment, a compressed air foam fire extinguishing device includes a foam release box 1, an air compressor 2, a mixing pipe 3, a telescopic assembly 4 and a sprinkler head 5. A quick-release assembly 6 is installed at one end of the foam release box 1. The foam release box 1 is detachably connected to one end of the mixing pipe 3 through the quick-release assembly 6. A pressurizing pipe 31 is installed on the mixing pipe 3. The pressurizing pipe 31 is communicated with the mixing pipe 3, and the pressurizing pipe 31 is communicated with the air compressor 2. The other end of the mixing pipe 3 is connected to one end of the telescopic assembly 4, and the other end of the telescopic assembly 4 is detachably connected to the sprinkler head 5.

[0021] As Figure 3 、 Figure 4 、 Figure 5 shown, a release pipe 11 is installed on the foam release box 1. The release pipe 11 is communicated with the foam release box 1. A fitting ring 12 is installed at one end of the release pipe 11. An inserting ring 32 is installed at one end of the mixing pipe 3. The fitting ring 12 is in contact with the inserting ring 32. A plurality of insertion rods 13 distributed in a circumferential manner are provided on the fitting ring 12. One end of the insertion rod 13 is connected to the fitting ring 12, and the other end of the insertion rod 13 penetrates through the inserting ring 32 and is located on the other side of the inserting ring 32. A fixing hole 14 is provided at the end of the insertion rod 13 penetrating through the inserting ring 32. A plurality of quick-release assemblies 6 are installed on the side surface of the inserting ring 32. The quick-release assemblies 6 correspond to the insertion rods 13 one by one. The quick-release assembly 6 includes a mounting frame 61, a pneumatic cylinder I 62 and a fixed block 63. The mounting frame 61 is installed on the inserting ring 32. The pneumatic cylinder I 62 is installed on the mounting frame 61. The pneumatic end of the pneumatic cylinder I 62 is connected to the fixed block 63. The cross-sectional shape of the fixed block 63 is triangular, and the fixed block 63 corresponds to the fixing hole 14.

[0022] Inside the release pipe 11, there is a sealing pipe 15. One end of the sealing pipe 15 is connected to the release pipe 11, and the other end of the sealing pipe 15 is placed inside the mixing pipe 3. The shape of the sealing pipe 15 is frustum-shaped, and the end with a smaller diameter of the sealing pipe 15 is placed inside the mixing pipe 3. A sealing ring 33 is installed on the inner wall of the mixing pipe 3, and the sealing ring 33 fits against the surface of the sealing pipe 15.

[0023] As Figure 6 shown, recovery blocks 34 are installed on both sides of the pressurizing pipe 31. A recovery groove 35 is provided on the side of the recovery block 34 facing the pressurizing pipe 31. The recovery groove 35 communicates with the pressurizing pipe 31. A necking-down assembly 22 is provided inside the recovery groove 35. The necking-down assembly 22 includes a moving plate 23 and an electric push rod 24. The electric push rod 24 is placed inside the recovery groove 35. One end of the electric push rod 24 is connected to the moving plate 23. The cross-sectional shape of the moving plate 23 is semi-circular, and the moving plate 23 matches the pressurizing pipe 31.

[0024] A stabilizing ball 36 is installed on the mixing pipe 3. A stabilizing cavity 37 is provided on the stabilizing ball 36, and the stabilizing cavity 37 communicates with the mixing pipe 3.

[0025] As Figure 7 shown, a rotating assembly 7 is installed inside the stabilizing ball 36. The rotating assembly 7 includes a mounting ring 71 and a rotating ring 72. The mounting ring 71 is placed inside the stabilizing ball 36 and is connected to the inner wall of the stabilizing ball 36. The rotating ring 72 fits against the inner side surface of the mounting ring 71. A clamping ring 73 is installed on the outer side surface of the rotating ring 72. A clamping groove 74 is provided on the inner side of the mounting ring 71. The rotating ring 72 is rotationally connected to the mounting ring 71 through the cooperation of the clamping ring 73 and the clamping groove 74. A number of impact plates 75 evenly distributed are provided on the rotating ring 72. The shape of the impact plate 75 is spiral. One end of the impact plate 75 is connected to the inner side surface of the rotating ring 72, and the other end of the impact plate 75 is provided with a support column 76. The support column 76 is placed at the axis center of the rotating ring 72, and one end of each impact plate 75 is connected to the support column 76.

[0026] As Figure 8 、 Figure 9 shown, the telescopic assembly 4 includes a rear plate 41, a telescopic pipe 42, and a front plate 43. An insertion ring 44 is installed on one side of the rear plate 41. The insertion ring 44 is placed inside the mixing pipe 3 and is connected to the mixing pipe 3. One end of the telescopic pipe 42 is connected to the rear plate 41, and the other end of the telescopic pipe 42 is connected to the front plate 43.

[0027] Fixed columns 45 are installed on both sides of the front plate 43. One end of the fixed column 45 is connected to the front plate 43, and the other end of the fixed column 45 passes through the rear plate 41 and is placed on the other side of the rear plate 41. A sliding ring 8 is installed on the rear plate 41, and a sliding block 81 is installed on the sliding ring 8. A sliding groove 46 is provided on the rear plate 41. The sliding ring 8 is slidably connected to the rear plate 41 through the cooperation of the sliding block 81 and the sliding ring 8. Fixed rods 82 are installed at both ends of the sliding ring 8, and the fixed rods 82 correspond to the fixed columns 45 one by one. One end of the fixed rod 82 passes through the fixed column 45 and is placed on the other side of the fixed column 45. A pull plate 83 is installed on the sliding ring 8.

[0028] As Figure 10 shown, an insertion connection pipe 47 is installed on the front plate 43. A number of separation plates 51 distributed in a circular pattern are provided on the spray head 5. One end of the separation plate 51 is connected to the spray head 5, and the other end of the separation plate 51 is placed inside the insertion connection pipe 47 and fits against the inner wall of the insertion connection pipe 47. A raised ball 52 is installed on the separation plate 51. The separation plate 51 is detachably connected to the insertion connection pipe 47 through the raised ball 52. A take - up plate 48 is provided on the front plate 43. Both ends of the take - up plate 48 are respectively connected to the fixed columns 45 on both sides. A take - up ring 49 is installed on the take - up plate 48.

[0029] The present invention also provides a method for using a compressed air foam fire extinguishing device, which specifically includes the following steps: Step 1: Fit the fitting ring 12 on the release pipe 11 of the foam release box 1 with the insertion ring 32 of the mixing pipe 3. The insertion rod 13 on the fitting ring 12 passes through the insertion ring 32, and then the pneumatic cylinder one 62 drives the fixed block 63 to descend, driving the insertion rod 13 to move, completing the fitting of the fitting ring 12 and the insertion ring 32. At this time, the release pipe 11 is hermetically connected to the mixing pipe 3 through the sealing pipe 15 and the fitting with the sealing ring 33. Step 2: Connect the pressurizing pipe 31 to the air outlet end of the air compressor 2, and then connect the spray head 5 to the insertion connection pipe 47 of the telescopic assembly 4. Step 3: The foam release box 1 releases foam liquid into the mixing pipe 3 through the release pipe 11, mixes with the compressed gas in the mixing pipe 3, and then enters the stabilizing ball 36, where it impacts the rotating assembly 7 to rotate in the stabilizing ball 36 for preliminary mixing of the gas and liquid. Step 4: The mixed foam liquid is released from the spray head 5 through the telescopic assembly 4. At this time, after releasing the fixation of the telescopic assembly 4, move the spray head 5 through the take - up ring 49 to extinguish the fire. Step 5: When the liquid in the foam release box 1 is insufficient, the pneumatic cylinder one 62 drives the fixed block 63 away from the insertion rod 13, releasing the fixation of the release pipe 11, and then the foam release box 1 can be replaced.

[0030] When installing the fire extinguishing device, the fitting ring 12 on the release pipe 11 of the foam release box 1 is fitted with the insertion ring 32 of the mixing pipe 3. The insertion rod 13 on the fitting ring 12 passes through the insertion ring 32, and then the pneumatic cylinder 62 drives the fixed block 63 to descend, driving the insertion rod 13 to move, completing the fitting of the fitting ring 12 and the insertion ring 32. At this time, the release pipe 11 is hermetically connected to the mixing pipe 3 through the fitting of the sealing pipe 15 and the sealing ring 33.

[0031] Then, connect the air compressor 2 and the nozzle 5 to the mixing pipe 3 in turn. The air compressor 2 is connected to the pressurizing pipe 31. The separation plate 51 of the nozzle 5 is inserted into the insertion pipe 47 and connected to the insertion pipe 47 through the cooperation of the convex ball 52 and the inner wall of the insertion pipe 47, completing the rapid assembly of the fire extinguishing device.

[0032] After the assembly is completed, the foam release box 1 releases the foam liquid into the mixing pipe 3 through the release pipe 11, and the foam liquid enters and fills the stable cavity 37 of the stable ball 36. At the same time, start the air compressor 2. The air compressor 2 inputs compressed air into the mixing pipe 3 through the pressurizing pipe 31. Then, the compressed air and the foam liquid are mixed in the mixing pipe 31, and the compressed air carries the foam liquid and outputs from the other end of the mixing pipe 31. Since the stable cavity 37 is filled with the foam liquid, the stable output of the foam liquid can be ensured, preventing the foam liquid from outputting in a large-small-large manner.

[0033] When the compressed air drives the output of the foam liquid, the compressed air and the foam liquid impact on the impact plate 75 of the rotating assembly 7, driving the impact plate 75 and the rotating ring 72 to rotate, initially mixing the compressed air and the foam liquid, facilitating the generation of more foam during output.

[0034] When using the nozzle to extinguish the fire, pull the pull plate 83 to drive the sliding ring 8 to move along the sliding groove 46. The sliding ring 8 drives the fixed rod 82 away from the fixed column 45, releasing the fixation on the fixed column 45. The fixed column 54 can move away from the rear plate 41. Then, the nozzle 5 can be moved through the existence of the telescopic pipe 42. Drive the front plate 43 and the nozzle 5 to move by holding the ring 49, and spray at the fire source through the nozzle 5.

[0035] During the fire extinguishing process, the electric push rod 24 can be used to push the moving plate 23 to move to constrict the pressurizing pipe 31, thereby changing the passing amount of the compressed gas and thus changing the spraying distance of the foam liquid. When the foam liquid in the foam release box 1 is insufficient, the pneumatic cylinder 62 raises the fixed block 63 to release the fixation on the insertion rod 13, thereby quickly replacing the foam release box 1.

Claims

1. A compressed air foam fire extinguishing device, characterized in that, It includes a foam release box (1), an air compressor (2), a mixing pipe (3), a telescopic assembly (4) and a spray head (5). One end of the foam release box (1) is equipped with a quick-release assembly (6). The foam release box (1) is detachably connected to one end of the mixing pipe (3) through the quick-release assembly (6). A pressure pipe (31) is installed on the mixing pipe (3). The pressure pipe (31) is communicated with the mixing pipe (3). The pressure pipe (31) is communicated with the air compressor (2). The other end of the mixing pipe (3) is connected to one end of the telescopic assembly (4). The other end of the telescopic assembly (4) is detachably connected to the spray head (5).

2. The compressed air foam fire extinguishing device according to claim 1, characterized in that, A release pipe (11) is installed on the foam release box (1). The release pipe (11) is communicated with the foam release box (1). One end of the release pipe (11) is equipped with a fitting ring (12). One end of the mixing pipe (3) is equipped with a plugging ring (32). The fitting ring (12) is in contact with the plugging ring (32). A number of insertion rods (13) distributed in a circular pattern are provided on the fitting ring (12). One end of the insertion rod (13) is connected to the fitting ring (12). The other end of the insertion rod (13) penetrates through the plugging ring (32) and is located on the other side of the plugging ring (32). A fixing hole (14) is provided at the end of the insertion rod (13) that penetrates through the plugging ring (32). A number of quick-release assemblies (6) are installed on the side surface of the plugging ring (32). The quick-release assemblies (6) correspond to the insertion rods (13) one by one. The quick-release assembly (6) includes a mounting frame (61), a pneumatic cylinder one (62) and a fixing block (63). The mounting frame (61) is installed on the plugging ring (32). The pneumatic cylinder one (62) is installed on the mounting frame (61). The pneumatic end of the pneumatic cylinder one (62) is connected to the fixing block (63). The cross-sectional shape of the fixing block (63) is triangular. The fixing block (63) corresponds to the fixing hole (14).

3. The compressed air foam fire extinguishing device according to claim 2, characterized in that, A sealing pipe (15) is provided inside the release pipe (11). One end of the sealing pipe (15) is connected to the release pipe (11). The other end of the sealing pipe (15) is located inside the mixing pipe (3). The shape of the sealing pipe (15) is frustum-shaped. The end with a smaller diameter of the sealing pipe (15) is located inside the mixing pipe (3). A sealing ring (33) is installed on the inner wall of the mixing pipe (3). The sealing ring (33) is in contact with the surface of the sealing pipe (15).

4. A compressed air foam fire extinguishing device according to claim 1, characterized in that, Recovery blocks (34) are installed on both sides of the pressure pipe (31). A recovery groove (35) is provided on the side of the recovery block (34) facing the pressure pipe (31). The recovery groove (35) communicates with the pressure pipe (31). A necking component (22) is provided in the recovery groove (35). The necking component (22) includes a moving plate (23) and an electric push rod (24). The electric push rod (24) is placed in the recovery groove (35). One end of the electric push rod (24) is connected to the moving plate (23). The cross-sectional shape of the moving plate (23) is semi-circular, and the moving plate (23) matches the pressure pipe (31).

5. The compressed air foam fire extinguishing device according to claim 1, characterized in that, A stabilizing ball (36) is installed on the mixing pipe (3). A stabilizing cavity (37) is provided on the stabilizing ball (36). The stabilizing cavity (37) communicates with the mixing pipe (3).

6. The compressed air foam fire extinguishing device according to claim 5, wherein, A rotating component (7) is installed in the stabilizing ball (36). The rotating component (7) includes a mounting ring (71) and a rotating ring (72). The mounting ring (71) is placed in the stabilizing ball (36) and connected to the inner wall of the stabilizing ball (36). The rotating ring (72) fits against the inner side surface of the mounting ring (71). A clamping ring (73) is installed on the outer side surface of the rotating ring (72). A clamping groove (74) is provided on the inner side of the mounting ring (71). The rotating ring (72) is rotatably connected to the mounting ring (71) through the cooperation of the clamping ring (73) and the clamping groove (74). A number of impact plates (75) are evenly distributed on the rotating ring (72). The shape of the impact plate (75) is spiral. One end of the impact plate (75) is connected to the inner side surface of the rotating ring (72). The other end of the impact plate (75) is provided with a support column (76). The support column (76) is placed at the axis of the rotating ring (72). One end of each impact plate (75) is connected to the support column (76).

7. The compressed air foam fire extinguishing device according to claim 1, characterized in that, The telescopic component (4) includes a rear plate (41), a telescopic tube (42) and a front plate (43). An insertion ring (44) is installed on one side of the rear plate (41). The insertion ring (44) is placed in the mixing pipe (3) and connected to the mixing pipe (3). One end of the telescopic tube (42) is connected to the rear plate (41). The other end of the telescopic tube (42) is connected to the front plate (43).

8. The compressed air foam fire extinguishing device according to claim 7, characterized in that, Fixing columns (45) are installed on both sides of the front plate (43). One end of the fixing column (45) is connected to the front plate (43), and the other end of the fixing column (45) penetrates through the rear plate (41) and is located on the other side of the rear plate (41). A sliding ring (8) is installed on the rear plate (41), and a sliding block (81) is installed on the sliding ring (8). A sliding groove (46) is provided on the rear plate (41). The sliding ring (8) is slidably connected to the rear plate (41) through the cooperation of the sliding block (81) and the sliding ring (8). Fixing rods (82) are installed at both ends of the sliding ring (8). The fixing rods (82) correspond to the fixing columns (45) one by one. One end of the fixing rod (82) penetrates through the fixing column (45) and is located on the other side of the fixing column (45). A pulling plate (83) is installed on the sliding ring (8).

9. The compressed air foam fire extinguishing device according to claim 8, characterized in that, An insertion connection pipe (47) is installed on the front plate (43). A plurality of separation plates (51) distributed in a circular pattern are provided on the spray head (5). One end of the separation plate (51) is connected to the spray head (5), and the other end of the separation plate (51) is located inside the insertion connection pipe (47) and fits against the inner wall of the insertion connection pipe (47). A convex ball (52) is installed on the separation plate (51). The separation plate (51) is detachably connected to the insertion connection pipe (47) through the convex ball (52). A taking plate (48) is provided on the front plate (43). Both ends of the taking plate (48) are respectively connected to the fixing columns (45) on both sides. A taking ring (49) is installed on the taking plate (48).

10. A method for using a compressed air foam fire extinguishing device. According to a compressed air foam fire extinguishing device as described in any one of claims 1-9, the method specifically includes the following steps: Step 1: Fit the fitting ring (12) on the release pipe (11) of the foam release box (1) with the insertion ring (32) of the mixing pipe (3). The insertion rod (13) on the fitting ring (12) passes through the insertion ring (32), and then the pneumatic cylinder one (62) drives the fixing block (63) to descend, driving the insertion rod (13) to move, completing the fitting of the fitting ring (12) and the insertion ring (32). At this time, the release pipe (11) is hermetically connected to the mixing pipe (3) through the sealing pipe (15) and the fitting with the sealing ring (33). Step 2: Connect the pressurizing pipe (31) to the air outlet end of the air compressor (2), and then connect the spray head (5) to the insertion connection pipe (47) of the telescopic assembly (4). Step 3: The foam release box (1) releases foam liquid into the mixing pipe (3) through the release pipe (11), mixes with the compressed gas in the mixing pipe (3), and then enters the stable ball (36), where it impacts the rotating assembly (7) to rotate in the stable ball (36) for preliminary mixing of the gas and liquid. Step 4: The mixed foam liquid is released from the spray head (5) through the telescopic assembly (4). At this time, after releasing the fixation of the telescopic assembly (4), move the spray head (5) through the taking ring (49) to extinguish the fire. Step Five: When the liquid in the foam release box (1) is insufficient, the pneumatic cylinder one (62) drives the fixed block (63) away from the insertion rod (13) to release the fixation of the release pipe (11), and then the foam release box (1) can be replaced.

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