Spray head, self-starting spray head and fire extinguisher thereof

Abstract

The invention discloses a nozzle, a self-starting nozzle and a fire extinguisher thereof. The invention provides a spray head which comprises a connecting part used for being communicated with a pipeline for supplying a medium and an expansion part arranged on the connecting part and extending in the axial direction, and a plurality of through holes communicated with the connecting part are further formed in the expansion part in the axial direction and used for forming a medium movement path. Wherein a guide part is also arranged in the through hole, and the guide part is configured to allow the medium moving along the through hole to spirally move. In this way, the coverage area of the medium which moves to the outside after being guided by the guide part can be increased. And meanwhile, the medium moving to the outside can be more uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing medium delivery, in particular to a sprinkler, a self-starting sprinkler and a fire extinguisher thereof. Background Art

[0002] like Figure 5 As shown, a conventional fire extinguisher 300 generally includes a tank 8 filled with a fire extinguishing medium. It also includes a connecting pipe 81 and a hose 82 that communicate with the tank 8. Together, the connecting pipe 81 and the hose 82 form a path for the fire extinguishing medium to move. Furthermore, the fire extinguisher 300 includes a handle 83 for sequentially connecting the tank 8, the connecting pipe 81, and the hose 82 to form a path for the fire extinguishing medium to move.

[0003] In this configuration, when the fire extinguisher 300 is used to extinguish a fire, the free end of the hose 82 is aligned with the area to be extinguished, and the handle 83 is pressed. This allows the fire extinguishing medium in the tank 8 to flow along the connecting pipe 81 and the hose 82 to the area to be extinguished, thereby achieving the fire extinguishing operation.

[0004] Although this method can achieve the purpose of extinguishing the fire, under this setting, the fire extinguishing medium moving from the tank body 8 to the area to be extinguished generally moves in a straight line, and the area covered by the fire extinguishing medium is small, which is not suitable for large-scale fires.

[0005] At the same time, under this arrangement, it is generally necessary to manually press the handle 83 to move the fire extinguishing medium in the tank 8 along the connecting pipe 81 and the hose 82 to the area to be extinguished. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides a sprinkler, a self-starting sprinkler and a fire extinguisher thereof. To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: A nozzle includes a connecting portion for communicating with a pipe supplying a medium, an extension portion provided on the connecting portion and extending axially, and a plurality of through holes in the extension portion that are axially connected to the connecting portion to form a path for the medium to move. A guide portion is further provided in the through hole, and the guide portion is configured to allow the medium moving along the through hole to move in a spiral motion.

[0007] Furthermore, the guide portion is configured as a spiral sheet structure and is distributed along the channel.

[0008] Furthermore, the diameter of the through hole gradually increases as it moves away from the connecting portion, and the radial outer side of the guide portion and the expansion portion abut against each other, so that the medium moving along the through hole gradually diffuses.

[0009] Furthermore, the connecting portion includes a fixing member fixed relative to the pipe supplying the medium, and a flow guide member arranged on the fixing member for fixing relative to the guide portion. The width of the radial inner side of the flow guide member gradually increases as it approaches the guide portion to diffuse the medium from the fixing member.

[0010] A self-starting nozzle includes a fixing portion fixed relative to a medium supply pipe, a limiting portion connected to the fixing portion in a selective manner and extending along the fixing portion, A first through channel is provided on the fixing portion along its axial direction, and a second through channel is provided on the limiting portion along its axial direction. The first channel and the second channel are used to jointly constitute a path for the medium to move. The self-starting nozzle also includes a blocking portion that is relatively fixedly arranged in the first channel and the second channel to selectively block the first channel and the second channel.

[0011] Furthermore, the sealing portion is configured as a sealed glass tube, and the glass tube is filled with a heat-sensitive fluid.

[0012] Furthermore, the first channel includes a convergence channel whose radial distance gradually decreases as it moves away from the medium supply pipe to accelerate the medium, and a first limiting channel that is connected to the convergence channel and allows the axial inward movement of the blocking part to be restricted.

[0013] Furthermore, the second channel includes a second limiting channel that is interconnected with the first limiting channel to limit the axial outward movement of the sealing part, and a diffusion channel that is interconnected with the second limiting channel. The radial distance of the diffusion channel gradually increases as it moves away from the second limiting channel, thereby diffusing the medium passing through the diffusion channel.

[0014] Furthermore, the self-starting nozzle also includes a guide portion provided at the end of the limiting portion for guiding the movement path of the medium from the second limiting channel, and the guide portion is configured to allow the medium to move axially and diffuse circumferentially.

[0015] A fire extinguisher includes a tank containing a fire extinguishing medium, a connecting pipe connected to the tank for accelerating the fire extinguishing medium from the tank, a hose connected to the connecting pipe for forming a movement path of the fire extinguishing medium, and a handle provided on the connecting pipe for selectively opening the connecting pipe so that the fire extinguishing medium can move from the tank along the connecting pipe and the hose. A nozzle is provided at the free end of the hose, and is capable of guiding the fire extinguishing medium from the hose so that the medium moves to the outside in a spiral manner. At the same time, a self-starting nozzle is optionally provided on the connecting pipe. The self-starting nozzle is configured to allow the tank body, the connecting pipe and the outside to be connected with each other when the sealing portion is broken, so as to form a channel for the movement of the fire extinguishing medium, and allow the fire extinguishing medium located in the tank body to move along the channel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a nozzle is provided at the free end of the hose, and is configured to guide the fire extinguishing medium from the hose so that the medium moves to the outside in a spiral pattern. This increases the coverage area of ​​the medium that is guided by the guide portion and moves to the outside. Furthermore, the medium that moves to the outside is distributed more evenly.

[0017] 2. In the present invention, a self-activating nozzle is selectively provided on the connecting pipe. This nozzle is configured to allow the tank, the connecting pipe, and the outside world to communicate with each other when the sealing portion ruptures, thereby forming a channel for the movement of the fire extinguishing medium. This channel allows the fire extinguishing medium within the tank to flow along. In this way, the fire extinguisher can automatically activate upon exposure to heat, thereby extinguishing the fire. This expands the scope of application of the fire extinguisher. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples: Figure 1 Schematic diagram of the overall structure of the nozzle according to an embodiment of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of a nozzle according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the overall structure of a self-starting nozzle according to an embodiment of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the self-starting nozzle according to an embodiment of the present invention; Figure 5 Schematic diagram of the overall structure of a fire extinguisher according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the overall structure of the fire extinguisher from another perspective according to an embodiment of the present invention.

[0019] In the above drawings: nozzle 100, connecting part 1, fixing part 11, flow guide part 12, expansion part 2, through hole 21, guide part 3, self-starting nozzle 200, fixing part 4, first channel 41, retraction channel 411, first limiting channel 412, first accommodating channel 4121, first abutting channel 4122, limiting part 5, second channel 51, second limiting channel 511, second accommodating channel 5111, second abutting channel 5112, diffusion channel 512, blocking part 6, guide part 7, axial hole 71, guide part 72, guide groove 721, connecting column 73, fire extinguisher 300, tank body 8, connecting pipe 81, hose 82, handle 83, pressure gauge 84. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0021] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a sprinkler, a self-starting sprinkler and a fire extinguisher of the present invention in conjunction with the accompanying drawings.

[0022] Figure 1 、 2 The overall structure of the nozzle according to the present invention is schematically shown. Figure 2 In the illustrated embodiment, the spray head 100 includes a connection portion 1 configured to allow communication with a pipe supplying a medium (a water pipe, a fire extinguisher hose, and the like).

[0023] like Figure 1 As shown, the connecting portion 1 is further provided with an expansion portion 2, which is configured to extend axially along the connecting portion 1. The expansion portion 1 is further provided with a plurality of through holes 21, which extend axially and communicate with the connecting portion 1.

[0024] In this way, the pipeline for supplying the medium, the connecting portion 1 and the through hole 21 together form a path for the medium to move. Specifically, in this arrangement, the medium can move along the pipeline, the connecting portion 1 and the through hole 21 to the outside.

[0025] In addition, if Figure 2 As shown, a guide portion 3 is further provided within the through hole 21. The guide portion 3 is configured to allow the medium moving along the through hole 21 to move in a spiral motion. In this manner, the coverage area of ​​the medium guided by the guide portion 3 and then released to the outside is increased. Furthermore, the medium moving to the outside is made more uniform.

[0026] In one embodiment, Figure 2As shown, the guide portion 3 is configured as a spiral sheet structure and is distributed along the through hole 21. Specifically, in the illustrated embodiment, the guide portion 3 extends axially, and its length is comparable to the length of the through hole 21. In this way, the medium is continuously subjected to the force of the guide portion 3 during its outward movement, thereby causing the medium to continue to move outward in a spiral manner until it moves out of the through hole 21 to the outside world.

[0027] According to a preferred embodiment of the present invention, Figure 2 As shown, the diameter of the through hole 21 gradually increases as it moves away from the connecting portion 1. Specifically, the through hole 21 is configured in a trumpet shape with the larger opening facing outward. At the same time, the radial outer side of the guide portion 3 abuts against the expansion portion 2.

[0028] In this way, a spiral channel is formed between the guide portion 3 and the through hole 21. In this arrangement, the medium can move outward in a spiral form and gradually diffuse as it moves outward. This can further increase the coverage area of ​​the medium that moves to the outside.

[0029] In one embodiment, Figure 2 As shown, the connecting portion 1 includes a fixing member 11, which is configured to be fixed relative to a medium supply pipe and allow communication with the medium supply pipe. Furthermore, a flow guide 12 is provided on the fixing member 11, which is configured to be connected to the expansion portion 2 and allow communication with each through hole 21.

[0030] In addition, if Figure 2 As shown, the radial inner width of the flow guide 12 gradually increases as it approaches the expansion portion 2. In this arrangement, the flow guide 12 can diffuse the medium from the fixing member 11, thereby reducing the movement speed of the medium and allowing the medium to enter the through holes 21 separately.

[0031] In this configuration, when the sprinkler 100 is used to direct the medium, the fixture 11 and the medium supply pipe (water pipe, fire extinguisher hose, or the like) are first connected to each other, and the flow guide 12 is fixedly positioned at the end of the fixture 11. Simultaneously, the extension 2 is positioned at the free end of the flow guide 12, and the guide 3 is positioned within the through hole 21. This completes the arrangement of the sprinkler 100.

[0032] When the nozzle 100 is used to discharge the medium, the medium supply pipe is opened. The medium then flows from the pipe into the fixed member 11 and along the fixed member 11 into the flow guide 12. During this process, the diameter of the flow guide 12 gradually increases, so the flow guide 12 decelerates the medium from the fixed member 11, ensuring that the medium, after passing through the flow guide 12, flows evenly into the through hole 21 and continues to move along the spiral channel formed by the guide portion 3 and the through hole 21.

[0033] At the same time, as the area of ​​the spiral channel continues to increase during this process, the area of ​​the medium will also continue to increase, and will move to the outside in a spiral manner. This can increase the coverage area of ​​the medium and also make the medium more uniform. It should be noted that the pipeline for supplying the medium is configured to allow the medium to be pressurized to provide the force for its movement.

[0034] Figure 3 The overall structure of the self-starting nozzle according to the present invention is schematically shown. Figure 3 In the illustrated embodiment, the self-actuating sprinkler head 200 includes a fixing portion 4 configured to allow a pipe for supplying a medium (a water pipe, a fire extinguisher hose, and the like) to be fixed relative to each other and to communicate with each other.

[0035] At the same time, if Figure 3 As shown, the self-priming nozzle 200 further includes a stopper 5, which extends along the fixing portion 4 and is detachably connected to the fixing portion 4. A first channel 41 is provided along the axial direction of the fixing portion 4, and a second channel 51 is provided along the axial direction of the stopper 5. In this manner, the medium supply pipe, the first channel 41, and the second channel 51 together form a passage for the medium to flow.

[0036] In addition, if Figure 3 As shown, the self-starting nozzle 200 further includes a blocking portion 6 , which is disposed in a relatively fixed manner in the first channel 41 and the second channel 51 and can selectively block the first channel 41 and the second channel 51 .

[0037] In this arrangement, when the blocking portion 6 is located in the first channel 41 and the second channel 51 , a circuit is formed between the pipeline supplying the medium, the first channel 41 and the second channel 51 , thereby preventing the medium from moving outward.

[0038] When the blocking portion 6 is not located within the first channel 41 or the second channel 51, the medium supply pipe, the first channel 41, and the second channel 51 together form a passage for the medium to move, thereby allowing the medium to move outward along the passage. It should be noted that the medium supply pipe allows for pressurization of the medium, and the method of pressurization is well known to those skilled in the art. Therefore, it will not be described in detail here.

[0039] In one embodiment, Figure 3 As shown, the sealing portion 6 is configured as a sealed glass tube filled with a thermosensitive fluid. The thermosensitive fluid is configured to expand upon heating and continuously exert force on the glass tube, thereby causing the glass tube to rupture and thereby separating the sealing portion 6 from the first channel 41 and the second channel 51. In this embodiment, the thermosensitive fluid is kerosene.

[0040] In this setting mode, when the self-starting sprinkler 200 needs to be used, the fixing portion 4 and the pipeline for supplying the medium (water pipe, fire extinguisher hose and the like) are first fixed relative to each other, and a limiting portion 5 is set on the fixing portion 4, and the first channel 41 and the second channel 51 are connected to each other.

[0041] At the same time, blocking portions 6 are provided within first channel 41 and second channel 51. This disconnects the passages between the medium supply pipe, first channel 41, and second channel 51, thereby allowing the medium to reside within the medium supply pipe. This completes the arrangement of the self-starting nozzle 200.

[0042] As the self-starting showerhead 200 continues to heat, the heat is continuously transferred to the sealing portion 6, thereby heating the kerosene within the sealing portion 6. During this process, the kerosene continues to expand due to the heat, continuously exerting a force on the glass tube. When this force exceeds the stress limit of the glass tube, the glass tube will rupture. At this point, the medium supply pipe, first channel 41, and second channel 51 are interconnected.

[0043] During this process, the medium will continue to be subjected to the force exerted on it by the pipeline supplying the medium, so that the medium will continue to move out of the pipeline and continue to move to the outside along the first channel 41 and the second channel 51.

[0044] In one embodiment, Figure 4 As shown, the first channel 41 includes a convergence channel 411 and a first limiting channel 412, which are connected in sequence. The radial distance of the convergence channel 411 gradually decreases as it moves away from the medium supply pipe. In this way, the convergence channel 411 can accelerate the medium.

[0045] At the same time, if Figure 4 As shown, the first limiting channel 412 is configured to limit the axial inward movement of the blocking portion 6. Specifically, the first limiting channel 412 includes a first accommodating channel 4121 having a radial distance equivalent to that of the blocking portion 6 and configured to accommodate the blocking portion 6, and a first abutting channel 4122 that is interconnected with the first accommodating channel 4121 and abuts against the blocking portion 6 to limit the axial inward movement of the blocking portion 6. It should be noted that the radial distance of the first abutting channel 4122 is configured to be smaller than that of the first accommodating channel 4121 and is closer to the retracting channel 411.

[0046] In one embodiment, Figure 4 As shown, the second channel 51 is sequentially connected to a second limiting channel 511 and a diffusion channel 512. The second limiting channel 511 includes a second accommodating channel 5111 having a radial distance equivalent to that of the blocking portion 6 for accommodating the blocking portion 6, and a second abutting channel 5112 that is interconnected with the second accommodating channel 5111 and abuts against the blocking portion 6 to limit the axial outward movement of the blocking portion 6.

[0047] It should be noted that if Figure 4 As shown, the radial distance of the second abutting channel 5112 is configured to be smaller than that of the second accommodating channel 5111 and closer to the diffusion channel 512. Furthermore, the radial distance of the diffusion channel 512 gradually increases as it moves away from the medium supply pipe. In this way, the diffusion channel 512 can diffuse the medium, thereby increasing the coverage area of ​​the medium.

[0048] According to a preferred embodiment of the present invention, Figure 4 As shown, the fixing portion 4 and the limiting portion 5 are engaged with each other in a threaded manner. This facilitates the installation of the blocking portion 6. Specifically, in this arrangement, the blocking portion 6 can be first installed in the first accommodating channel 4121 and abutted against the first abutting channel 4122.

[0049] Then, the limiting portion 5 is placed on the blocking portion 6 so that the blocking portion 6 is located in the second accommodating channel 5111. At the same time, a force is applied to the limiting portion 5, causing it to rotate circumferentially, thereby causing the fixing portion 4 and the limiting portion 5 to engage with each other until the blocking portion 6 and the second abutting channel 5112 abut against each other. Thus, the setting of the blocking portion 6 is completed.

[0050] In one embodiment, Figure 3As shown, the self-starting nozzle 200 further includes a guide portion 7. In this embodiment, the guide portion 7 is provided at the free end of the limiting portion 5 and is configured to allow the medium from the diffusion channel 512 to move in the axial direction and diffuse in the circumferential direction.

[0051] In the illustrated embodiment, Figure 4 As shown, the guide portion 7 includes an axial hole 71 corresponding to the diffuser channel 512, and a guide member 72 connected to the axial hole 71 and extending along the circumferential direction. The cross section of the guide member 72 is arranged in a trapezoidal structure, and its radial distance gradually increases as it moves away from the diffuser channel 512.

[0052] In this manner, the fluid from the diffusion channel 512 can move linearly along the axial hole 71, and during the axial movement along the axial hole 71, it is also subjected to the force of the guide member 72, causing it to diffuse circumferentially. This increases the coverage area of ​​the medium while also enabling targeted movement of the medium, thereby improving the practicality of the self-priming nozzle 200.

[0053] According to a preferred embodiment of the present invention, Figure 3 As shown, the guide member 72 is further provided with a plurality of guide grooves 721. In this way, the medium can pass through the guide grooves 721 during outward movement, thereby moving to a predetermined position. In this arrangement, the area of ​​axial movement of the medium can be further increased.

[0054] According to a preferred embodiment of the present invention, Figure 3 As shown, the guide portion 7 further includes a connecting column 73 , which is disposed between the guide member 72 and the limiting portion 5 to relatively fix the guide member 72 and the limiting portion 5 together.

[0055] Figure 5 The overall structure of the fire extinguisher according to the present invention is schematically shown. Figure 5 In the illustrated embodiment, the fire extinguisher 300 includes a tank body 8 containing a fire extinguishing medium, a connecting pipe 81 connected to the tank body 8 for accelerating the fire extinguishing medium from the tank body 8, a hose 82 connected to the connecting pipe 81 for forming a movement path of the fire extinguishing medium, and a handle 83 provided on the connecting pipe 81 for selectively opening the connecting pipe 81 so that the fire extinguishing medium can move from the tank body 8 along the connecting pipe 81 and the hose 82.

[0056] In addition, if Figure 5 As shown, the fire extinguisher 300 further includes a pressure gauge 84 provided on the connecting pipe 81 for detecting the internal pressure of the tank 8. It should be noted that the structure and connection relationship of the fire extinguisher 300 are well known to those skilled in the art. Therefore, they will not be described in detail here. At the same time, if Figure 4 、 5 As shown, a nozzle 100 is further provided at the free end of the hose 82 , and the nozzle 100 is capable of guiding the fire extinguishing medium from the hose 82 so that the medium moves to the outside in a spiral manner.

[0057] In addition, if Figure 5 As shown, a self-actuating nozzle 200 is optionally provided on the connecting pipe 81. The self-actuating nozzle 200 is configured to allow the tank body 8, the connecting pipe 81, and the outside world to communicate with each other when the sealing portion 6 ruptures, thereby forming a passage for the movement of the fire extinguishing medium, and allowing the fire extinguishing medium in the tank body 8 to move along the passage. It should be noted that the free end of the self-actuating nozzle 200 faces the flammable equipment.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A nozzle, characterized in that: The invention comprises a connecting portion (1) for communicating with a pipeline for supplying a medium, an extension portion (2) provided on the connecting portion (1) and extending axially, and a plurality of through holes (21) in communication with the connecting portion (1) are provided on the extension portion (2) along the axial direction to form a path for the movement of the medium. A guide portion (3) is further provided in the through hole (21), and the guide portion (3) is configured to allow the medium moving along the through hole (21) to move in a spiral motion.

2. The nozzle according to claim 1, characterized in that The guide portion (3) is configured as a spiral sheet structure and is distributed along the channel (11).

3. The nozzle according to claim 2, characterized in that The diameter of the through hole (21) gradually increases as it moves away from the connecting portion (1), and the radial outer side of the guide portion (3) and the expansion portion (2) abut against each other, so that the medium moving along the through hole (21) gradually diffuses.

4. The nozzle according to claim 1, characterized in that The connecting portion (1) comprises a fixing member (11) fixed relative to a pipe supplying a medium, and a flow guide member (12) provided on the fixing member (1) and used to be fixed relative to the guide portion (3). The width of the radial inner side of the flow guide member (12) gradually increases as it approaches the guide portion (3) to diffuse the medium from the fixing member (11).

5. A self-starting nozzle, characterized in that: It comprises a fixing portion (4) fixed relative to a medium supplying medium pipe, a limiting portion (5) connected to the fixing portion (4) in a selective manner and extending along the fixing portion (4), A first through channel (41) is provided on the fixing portion (4) along its axial direction, and a second through channel (51) is provided on the limiting portion (5) along its axial direction. The first channel (41) and the second channel (51) are used to jointly constitute a path for the medium to move. The self-starting nozzle (200) further comprises a blocking portion (6) arranged in a relatively fixed manner in the first channel (41) and the second channel (51) to selectively block the first channel (41) and the second channel (51).

6. The self-starting nozzle according to claim 5, characterized in that: The sealing portion (6) is configured as a sealed glass tube, and the glass tube is filled with a heat-sensitive fluid.

7. The self-starting nozzle according to claim 5, characterized in that: The first channel (41) includes a convergence channel (411) whose radial distance gradually decreases as it moves away from the medium supply pipe to accelerate the medium, and a first limiting channel (412) that is connected to the convergence channel (411) and allows the axial inward movement of the blocking portion (6) to be limited.

8. The self-starting nozzle according to claim 7, characterized in that: The second channel (51) comprises a second limiting channel (511) which is interconnected with the first limiting channel (412) and is used to limit the axial outward movement of the blocking portion (6), and a diffusion channel (512) which is interconnected with the second limiting channel (511), wherein the radial distance of the diffusion channel (512) gradually increases as it gradually moves away from the second limiting channel (511), thereby diffusing the medium passing through the diffusion channel (512).

9. The self-starting nozzle according to any one of claims 5 to 8, characterized in that: The self-starting nozzle (200) further comprises a guide portion (7) provided at the end of the limiting portion (5) for guiding the movement path of the medium from the second limiting channel (511); the guide portion (7) is configured to allow the medium to move axially and diffuse circumferentially.

10. A fire extinguisher, the fire extinguisher (300) comprising a tank (8) containing a fire extinguishing medium, a connecting pipe (81) connected to the tank (8) for accelerating the fire extinguishing medium from the tank (8), a hose (82) connected to the connecting pipe (81) for forming a movement path of the fire extinguishing medium, and a handle (83) provided on the connecting pipe (81) for selectively opening the connecting pipe (81) so that the fire extinguishing medium can move from the tank (8) along the connecting pipe (81) and the hose (82). It is characterized by: A nozzle (100) is provided at the free end of the hose (82), and the nozzle (100) is capable of guiding the fire extinguishing medium from the hose (82) so that the medium moves to the outside in a spiral manner. At the same time, a self-starting nozzle (200) is optionally provided on the connecting pipe (81), and the self-starting nozzle (200) is configured to allow the tank body (8), the connecting pipe (81) and the outside to communicate with each other when the blocking portion (6) is broken, so as to form a passage for the movement of the fire extinguishing medium, and to allow the fire extinguishing medium in the tank body (8) to move along the passage.

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