Mute fire sprinkler and fire extinguishing equipment

Abstract

The utility model discloses a mute fire-fighting sprayer and fire extinguishing equipment, relates to the technical field of fire extinguishing equipment, and aims to solve the problem that the noise is loud when the fire-fighting sprayer releases fire extinguishing gas. The mute fire-fighting sprayer comprises a sprayer main body, a plurality of groups of small air outlet holes are formed in the sprayer main body, and a sound absorption cover is sleeved on the periphery of the sprayer main body; the noise reduction cavity is formed between the sound absorption cover and the spray head body, gas enters the noise reduction cavity through the small air outlet holes of the spray head body and then is sprayed out through the sound absorption cover, and therefore noise generated when fire extinguishing gas is released can be effectively reduced, and the influence caused by noise formation and damage to equipment are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field more specifically, relate to a kind of mute fire sprinkler and fire extinguishing equipment. BACKGROUND

[0002] In the fire fighting field, gas fire extinguishing system is widely applied due to its high efficiency, small influence on equipment and environment and other advantages. However, the existing gas fire sprinkler often produces a large noise when releasing fire extinguishing gas, which not only causes disturbance to the surrounding personnel or affects the communication between fire fighters, but also may cause panic or adverse effects on valuable cultural relics, precision instruments and the like in some special occasions (such as hospitals, libraries, museums and the like).

[0003] Therefore, how to solve the problem of large noise of fire sprinkler when releasing fire extinguishing gas is an urgent problem for the technical personnel in the field. SUMMARY

[0004] Therefore, the utility model provides a mute fire sprinkler, which can effectively reduce the noise generated when releasing fire extinguishing gas and avoid the influence of noise.

[0005] Another object of the utility model is to provide a fire extinguishing equipment comprising the above mute fire sprinkler, which improves the application range.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A mute fire sprinkler comprises a sprinkler body, a plurality of groups of gas outlet holes are formed in the sprinkler body, an acoustic absorption cover is arranged around the sprinkler body, an acoustic cavity is formed between the acoustic absorption cover and the sprinkler body, and the gas enters the acoustic cavity through the gas outlet holes of the sprinkler body and is sprayed out through the acoustic absorption cover.

[0008] Preferably, the sprinkler body comprises a connecting portion connected with a gas source pipeline, an acoustic portion provided with the gas outlet holes, and a transition portion for connecting the connecting portion and the acoustic portion, the transition portion is in a conical structure, the connecting portion, the acoustic portion and the middle portion of the transition portion are all provided with gas flow channels in communication with each other, and the connecting portion, the acoustic portion and the transition portion are in an integrated structure.

[0009] Preferably, the acoustic portion is in a cylindrical structure, the plurality of groups of gas outlet holes are uniformly arranged in the circumferential direction of the acoustic portion, and each group of gas outlet holes comprises a plurality of gas outlet holes uniformly arranged in the axial direction of the acoustic portion.

[0010] Preferably, the acoustic absorption cover is connected with the transition portion through a fixing assembly, so that a closed acoustic cavity is formed between the acoustic portion and the acoustic absorption cover and the fixing assembly.

[0011] Preferably, the fixing assembly comprises an upper pressing plate and a lower pressing plate, and the sound-absorbing cover is in a cylindrical structure, the upper pressing plate and the lower pressing plate are arranged at two ends of the sound-absorbing cover respectively, and are used for fixing the sound-absorbing cover to the outer periphery of the sound-absorbing part.

[0012] Preferably, the edge portions of the upper pressing plate and the lower pressing plate are formed into flange portions which are bent towards the sound-absorbing cover, and the flange portions of the upper pressing plate and the lower pressing plate are buckled at the outer peripheral edges of the two ends of the sound-absorbing cover respectively.

[0013] Preferably, the middle portion of the upper pressing plate is provided with a threaded hole, and the transition portion is detachably arranged in the threaded hole, and the lower pressing plate is arranged below the sound-absorbing part, and the lower pressing plate is connected to the bottom end of the sound-absorbing part through locking screws.

[0014] Preferably, the fixing assembly comprises a connecting plate, and the sound-absorbing cover is in a hemispherical structure, the connecting plate is welded to the sound-absorbing cover, and the connecting plate is threadedly connected to the transition portion, and is used for fixing the sound-absorbing cover to the outer periphery of the sound-absorbing part.

[0015] Preferably, the connecting plate comprises a connecting section which is connected to the transition portion, and is provided with an inner tapered surface which has the same taper as the transition portion, and further comprises a flat plate which is welded to the sound-absorbing cover, and the flat plate is in a circular ring shape, and the connecting section and the flat plate are in an integral structure.

[0016] A fire extinguishing device comprises the sound-absorbing fire nozzle.

[0017] The sound-absorbing fire nozzle comprises a nozzle body, a plurality of groups of gas outlet holes are formed in the nozzle body, the high-pressure gas flow is throttled through the plurality of groups of gas outlet holes, so that the flow rate and pressure of the gas flow are reduced, thereby reducing the sound of the fire extinguishing agent, a sound-absorbing cover is arranged on the outer periphery of the nozzle body, an acoustic cavity is formed between the sound-absorbing cover and the nozzle body, the gas enters the acoustic cavity through the gas outlet holes of the nozzle body, and is sprayed out through the sound-absorbing cover, the gas is sprayed out through the gas outlet holes of the nozzle body and enters the acoustic cavity, the gas bounces back to the acoustic cavity after colliding with the sound-absorbing cover, collides with the newly sprayed gas from the gas outlet holes of the nozzle body, and is finally discharged through the sound-absorbing cover, thereby achieving the effect of sound absorption. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0019] Figure 1 The sound-absorbing fire nozzle provided by the present application is shown in a cross-sectional view.

[0020] Figure 2A sectional view of the nozzle main body provided by the utility model;

[0021] Figure 3 A sectional view of the sound elimination part provided by the utility model;

[0022] Figure 4 A structural schematic view of the lower pressing plate provided by the utility model;

[0023] Figure 5 A sectional view of another embodiment of the mute fire nozzle provided by the utility model.

[0024] Reference signs:

[0025] 1-nozzle main body, 11-connection part, 12-sound elimination part, 13-transition part, 14-air flow channel;

[0026] 2-air outlet small hole;

[0027] 3-sound absorption cover;

[0028] 4-sound elimination cavity;

[0029] 5-upper pressing plate;

[0030] 6-lower pressing plate;

[0031] 7-locking screw;

[0032] 8-connection plate. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] In the utility model, unless explicitly defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] The utility model discloses a core provides a kind of mute fire sprinkler, can effectively reduce the noise generated when extinguishing gas release, avoid noise formation influence.The other core of the utility model provides a kind of fire extinguishing equipment including the mute fire sprinkler described above, improve the scope of application.

[0036] Please refer to Figure 1 、 Figure 2 And Figure 3 A kind of mute fire sprinkler includes the nozzle body 1 of nozzle.

[0037] Specifically, the nozzle body 1 is provided with a plurality of gas outlet holes 2, by setting a plurality of gas outlet holes 2, the high-pressure gas flow is throttled to reduce the flow rate and pressure of gas flow, so as to reduce the sound of spraying fire extinguishing agent, the outer periphery of the nozzle body 1 is provided with a sound-absorbing cover 3, and the sound-absorbing cover 3 and the nozzle body 1 form a sound-absorbing cavity 4, so that the gas enters the sound-absorbing cavity 4 through the gas outlet hole 2 of the nozzle body 1, and then is sprayed out through the sound-absorbing cover 3, the gas is sprayed out through the gas outlet hole 2 of the nozzle body 1 and enters the sound-absorbing cavity 4, the gas bounces to the sound-absorbing cavity 4 after colliding with the sound-absorbing cover 3, and finally is discharged through the sound-absorbing cover 3, so as to achieve the effect of sound-absorbing.

[0038] In practical application, the vibration and noise generated when the nozzle body 1 works can also be reduced by increasing the wall thickness of the sound-absorbing cover 3.

[0039] The mute fire sprinkler arranged in the above manner adopts the design of the sound-absorbing cover 3 and the sound-absorbing cavity 4 to achieve the effect of noise reduction, and a plurality of gas outlet holes 2 are arranged to throttle the high-pressure gas flow to reduce the flow rate and pressure of gas flow, so as to effectively reduce the noise generated when extinguishing gas is released, and provide a relatively quiet environment for communication between fire-fighting personnel.

[0040] It should be emphasized that although the sound-absorbing cover 3 and the sound-absorbing cavity 4 are designed to achieve the effect of reducing speed and sound, they do not have a negative impact on the extinguishing effect.

[0041] In the above embodiment, the nozzle body 1 includes a connecting portion 11 connected to a gas source pipeline, a sound-absorbing portion 12 provided with a gas outlet hole 2, and a transition portion 13 for connecting the connecting portion 11 and the sound-absorbing portion 12, the transition portion 13 is a conical structure, the connecting portion 11, the sound-absorbing portion 12 and the middle part of the transition portion 13 are all provided with gas flow channels 14 in communication with each other, and the connecting portion 11, the sound-absorbing portion 12 and the transition portion 13 are an integral structure.

[0042] It should be noted that the inside of the spray head body 1 is provided with an airflow channel 14, the air inlet and the air outlet small hole 2 are communicated with the airflow channel 14 respectively, and the sound absorption cover 3 is arranged outside the sound reduction part 12 and is used to reduce the noise generated when the spray head body 1 works. In this embodiment, the sound absorption cover 3 is sintered with powder, and the void parameters of the sintered sound absorption cover 3 can be adjusted according to actual needs to improve the noise reduction effect. The sound reduction cavity 4 is a closed cavity, which can be filled with sound absorption material, and the sound reduction cavity 4 is communicated with the airflow channel 14 through the air outlet small hole 2, so that the fire extinguishing gas can enter the sound reduction cavity 4 when passing through the spray head body 1, thereby reducing the gas flow rate and pressure and reducing the noise.

[0043] In this embodiment, the spray head body 1 is generally made of suitable materials such as aluminum alloy and stainless steel, and is made by casting and processing to ensure that the internal airflow channel 14 of the spray head body 1 is smooth and free of burrs and obstacles.

[0044] In the above case, the sound reduction part 12 has a cylindrical structure, and a plurality of groups of air outlet small holes 2 are uniformly arranged on the circumference of the sound reduction part 12. Any group of air outlet small holes 2 includes a plurality of air outlet small holes 2 uniformly arranged along the axial direction of the sound reduction part 12.

[0045] It can be understood that by arranging a plurality of groups of air outlet small holes 2, the high-pressure airflow is throttled to reduce the flow rate and pressure of the airflow, thereby ensuring that the speed and direction of the fire extinguishing gas when sprayed are uniform, reducing the noise generated by airflow impact, and ensuring the fire extinguishing effect. In actual application, the arrangement of the plurality of groups of air outlet small holes 2 on the sound reduction part 12 is not limited, and the size and number of the air outlet small holes 2 are not limited.

[0046] Further, the sound absorption cover 3 is connected with the transition part 13 through a fixing assembly, so that the sound reduction part 12 and the sound absorption cover 3 and the fixing assembly form a closed sound reduction cavity 4.

[0047] It should be noted that the sound absorption cover 3 is installed outside the sound reduction part 12 of the spray head body 1, so that the sound reduction part 12 and the sound absorption cover 3 and the fixing assembly form a closed sound reduction cavity 4.

[0048] Please refer to Figure 1 and Figure 4 , the fixing assembly includes an upper pressing plate 5 and a lower pressing plate 6, and the sound absorption cover 3 has a cylindrical structure, and the upper pressing plate 5 and the lower pressing plate 6 are arranged at both ends of the sound absorption cover 3 respectively, and are used to fix the sound absorption cover 3 to the outer circumference of the sound reduction part 12.

[0049] It can be understood that in actual application, the upper pressing plate 5 is fixed to the transition part 13, and the sound absorption cover 3 is arranged between the upper pressing plate 5 and the lower pressing plate 6, and is used to fix the sound absorption cover 3, thereby achieving the installation and fixation of the sound absorption cover 3.

[0050] On the basis of the above-mentioned embodiments, the edge portions of the upper pressing plate 5 and the lower pressing plate 6 are formed into flange portions which are bent towards the sound absorbing cover 3 side, and the flange portions of the upper pressing plate 5 and the lower pressing plate 6 are respectively buckled at the outer peripheral edges of the two ends of the sound absorbing cover 3.

[0051] It should be noted that the flange portions are arranged on the upper pressing plate 5 and the lower pressing plate 6 to limit the sound absorbing cover 3, and the flange portions are sealed to form the sealed sound absorbing cavity 4 between the sound absorbing cover 3 and the sound eliminating portion 12, so as to ensure the sound eliminating effect.

[0052] Further, the middle portion of the upper pressing plate 5 is provided with a threaded hole, and the transition portion 13 is detachably arranged in the threaded hole, and the lower pressing plate 6 is arranged below the sound eliminating portion 12, and the lower pressing plate 6 is connected with the bottom end of the sound eliminating portion 12 through the locking screw 7.

[0053] It can be understood that, in use, the nozzle body 1 is installed on the upper pressing plate 5, the transition portion 13 is connected and fixed with the threaded hole, the lower pressing plate 6 is threadedly connected with the bottom end of the sound eliminating portion 12 through the locking screw 7, the connection portion of the transition portion 13 and the upper pressing plate 5 is sealed, and the connection portion of the lower pressing plate 6 and the sound eliminating portion 12 is sealed, so as to ensure the closure of the sound absorbing cavity 4, thereby ensuring the sound eliminating effect of the sound absorbing cavity 4.

[0054] Please refer to Figure 5 In another embodiment, the fixing assembly comprises a connecting plate 8, the sound absorbing cover 3 is a hemispherical structure, the connecting plate 8 is welded with the sound absorbing cover 3, and the connecting plate 8 is threadedly connected with the transition portion 13, and is used for fixing the sound absorbing cover 3 on the outer periphery of the sound eliminating section.

[0055] It should be noted that the sound absorbing cover 3, the connecting plate 8 and the sound eliminating portion 12 can form a closed sound absorbing cavity 4, so as to simplify the structure of the nozzle body.

[0056] In the above case, the connecting plate 8 comprises a connecting section connected with the transition portion 13, the connecting section is provided with an inner tapered surface with the same taper as the transition portion 13, and further comprises a flat plate welded with the sound absorbing cover 3, the flat plate is a circular ring, and the connecting section and the flat plate are an integral structure.

[0057] It can be understood that the connecting section is arranged on the flat plate to increase the connection stability of the flat plate and the transition portion 13.

[0058] In summary, the mute fire nozzle provided by the utility model has the advantages of simple structure, convenient installation, wide application range and remarkable noise reduction effect.

[0059] In addition to the mute fire nozzle disclosed in the above-mentioned embodiments, the utility model further provides a fire extinguishing equipment comprising the mute fire nozzle, and the structures of other parts of the fire extinguishing equipment please refer to the prior art, and the text will not be repeated here.

[0060] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. The same or similar reference numerals are used in the drawings and description to refer to the same or like parts, components and operations throughout.

[0061] The above has carried out the detailed introduction to the mute fire-fighting nozzle and fire extinguishing equipment provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used to help understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the utility model without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A silent fire sprinkler head, characterized in that, include: The nozzle body (1) has multiple sets of small air outlet holes (2) and a sound-absorbing cover (3) is fitted around the outer periphery of the nozzle body (1). A silencing cavity (4) is formed between the sound-absorbing cover (3) and the nozzle body (1). Gas enters the silencing cavity (4) through the small air outlet holes (2) of the nozzle body (1) and is then ejected through the sound-absorbing cover (3).

2. The silent fire sprinkler head according to claim 1, characterized in that, The nozzle body (1) includes a connecting part (11) connected to the air source pipe, a silencing part (12) with the air outlet hole (2), and a transition part (13) for connecting the connecting part (11) and the silencing part (12). The transition part (13) has a conical structure. The middle of the connecting part (11), the silencing part (12) and the transition part (13) are all provided with airflow channels (14) that are interconnected. The connecting part (11), the silencing part (12) and the transition part (13) are an integral structure.

3. The silent fire sprinkler head according to claim 2, characterized in that, The silencing part (12) is a cylindrical structure, and multiple sets of air outlet holes (2) are evenly arranged in the circumference of the silencing part (12). Each set of air outlet holes (2) includes multiple air outlet holes (2) evenly arranged along the axial direction of the silencing part (12).

4. The silent fire sprinkler head according to claim 3, characterized in that, The sound-absorbing cover (3) is connected to the transition part (13) through a fixing component, so that the sound-absorbing part (12), the sound-absorbing cover (3), and the fixing component form a closed sound-absorbing cavity (4).

5. The silent fire sprinkler head according to claim 4, characterized in that, The fixing assembly includes an upper pressure plate (5) and a lower pressure plate (6). The sound-absorbing cover (3) is a cylindrical structure. The upper pressure plate (5) and the lower pressure plate are respectively located at both ends of the sound-absorbing cover (3) to fix the sound-absorbing cover (3) to the outer periphery of the sound-absorbing part (12).

6. The silent fire sprinkler head according to claim 5, characterized in that, The edges of the upper pressure plate (5) and the lower pressure plate (6) form flanges that bend toward the sound-absorbing cover (3). The flanges of the upper pressure plate (5) and the lower pressure plate (6) are respectively fastened to the outer peripheral edges at both ends of the sound-absorbing cover (3).

7. The silent fire sprinkler head according to claim 6, characterized in that, The upper pressure plate (5) has a threaded hole in the middle, and the transition part (13) is detachably disposed in the threaded hole. The lower pressure plate (6) is disposed below the silencing part (12), and the lower pressure plate (6) is connected to the bottom end of the silencing part (12) by a locking screw (7).

8. The silent fire sprinkler head according to claim 4, characterized in that, The fixing component includes a connecting plate (8), the sound-absorbing cover (3) is a hemispherical structure, the connecting plate (8) is welded to the sound-absorbing cover (3), and the connecting plate (8) is threadedly connected to the transition part (13) for fixing the sound-absorbing cover (3) to the outer periphery of the transition part (13).

9. The silent fire sprinkler head according to claim 8, characterized in that, The connecting plate (8) includes a connecting section connected to the transition part (13), the connecting section having an inner conical surface with the same taper as the transition part (13), and also includes a flat plate welded to the sound-absorbing cover (3), the flat plate being annular, and the connecting section and the flat plate being an integral structure.

10. A fire extinguishing device, characterized in that, Includes the silent fire sprinkler head as described in any one of claims 1-9.

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