Box firecracker

Abstract

The utility model discloses a box firecracker which comprises a packaging box for containing firecrackers, the firecrackers are set off in the packaging box, outer sound transmission holes are formed in the box wall of the packaging box, baffles are correspondingly arranged on the inner side of the box wall provided with the outer sound transmission holes, and the firecrackers are arranged in the packaging box on the inner sides of the baffles. A cavity is formed between the box wall and the baffle, the baffle is provided with inner sound transmission holes, and the inner sound transmission holes and the outer sound transmission holes are arranged in a staggered mode. On the basis that the sound transmission effect is ensured, most dust can be deposited in the packaging boxes on the inner side and the outer side of the baffle through two-stage precipitation, and dust pollution is effectively reduced; and meanwhile, pollution of the cannon scraps to the environment can be avoided.

Description

Technical Field

[0001] The utility model relates to a firecracker, in particular to a firecracker that collects the generated debris inside the product packaging box. Background Art

[0002] When a firecracker is set off, the firecracker body bursts to generate debris (hereinafter referred to as firecracker debris). With the increasing awareness of environmental protection, in order to avoid the pollution of the environment by the firecracker debris, an in-box firecracker has been introduced in the industry, which includes a packaging box for accommodating the firecracker. The firecracker is set off inside the packaging box, and sound transmission holes are provided on the box wall of the packaging box to transmit the sound effect of the firecracker. The debris generated by the firecracker can be centrally stored inside the packaging box, which is convenient for centralized collection and avoids damaging the environmental hygiene. The structures of the existing in-box firecrackers can be seen in the following Chinese utility model patent documents:

[0003] "A structure for preventing firecracker debris from overflowing in a firecracker packaging box" disclosed in the authorization announcement number CN214470412U; "A packaging structure for firecrackers" disclosed in the authorization announcement number CN214582814U; "An environment-friendly firecracker structure" disclosed in the authorization announcement number CN218380676U; "A fixing structure for in-box firecrackers" disclosed in the authorization announcement number CN217155169U; "A suspendable in-box firecracker" disclosed in the authorization announcement number CN217155170U; "A protection device for setting off firecrackers" disclosed in the authorization announcement number CN220472447U, etc.

[0004] The disadvantages of the existing technology are that: when a firecracker is set off, in addition to generating firecracker debris, a large amount of dust is also generated, and the existing in-box firecrackers cannot prevent the dust from leaking out of the packaging box to pollute the environment. Content of the Utility Model

[0005] In order to solve the above disadvantages, the technical problem to be solved by the utility model is to provide an in-box firecracker that can effectively reduce dust pollution. To solve the above technical problem, the technical solution adopted by the utility model is an in-box firecracker, which includes a packaging box for accommodating the firecracker. The firecracker is set off inside the packaging box, and an external sound transmission hole is provided on the box wall of the packaging box. It is characterized in that a baffle is correspondingly provided on the inner side of the box wall where the external sound transmission hole is provided, and the firecracker is placed inside the packaging box on the inner side of the baffle; a cavity is formed between the box wall and the baffle, and an internal sound transmission hole is provided on the baffle, and the internal sound transmission hole is arranged in a dislocation manner with the external sound transmission hole.

[0006] The beneficial effect of the utility model is that, on the basis of ensuring the sound transmission effect, when the firecrackers placed on the inner side of the baffle are set off, most of the gunpowder scraps and dust carried by the explosion airflow are blocked by the baffle and deposited in the packaging box inside the baffle (primary precipitation); after a small part of the gunpowder scraps and dust pass through the inner sound transmission hole and enter the cavity with the explosion airflow, due to the misaligned arrangement of the inner and outer sound transmission holes, the explosion airflow forms turbulence to slow down the airflow speed, and the gunpowder scraps and dust entering the cavity are deposited in the cavity (secondary precipitation). After two levels of precipitation, most of the dust will be deposited in the packaging boxes on both sides of the inner and outer sides of the baffle, effectively reducing dust pollution; at the same time, it can also prevent the gunpowder scraps from polluting the environment.

[0007] In one embodiment, a plurality of external sound transmission holes are distributed on the box wall to form an external sound transmission area; a plurality of internal sound transmission holes are distributed on the baffle to form an internal sound transmission area; the external sound transmission area and the internal sound transmission area are arranged at different heights, and the external sound transmission area is located above the internal sound transmission area. When the explosive is ignited, a rotating explosion airflow is formed in the cavity, the lighter airflow rises upward and overflows from the high external sound transmission area, and the heavier dust falls and is deposited in the cavity.

[0008] In one embodiment, a bracket for supporting firecrackers is provided in the packaging box inside the baffle, and the bracket is composed of two cross-shaped plates, and a notch is provided in the center of the top of the bracket, and the firecracker is placed in the notch. The bracket forms four separated overhead first-level sedimentation grids in the box body below the firecracker to collect paper scraps and dust, which is conducive to the deposition of firecracker scraps and dust during the burning process; the firecracker explodes at the top of the bracket, which can reduce the ignition and high-temperature carbonization of paper scraps, and greatly reduce the dust from the explosion.

[0009] In one embodiment, an inner cover is provided on the top of the packaging box to prevent damage to the packaging box during the discharge of the fireworks, strengthen the overall structure and load-bearing and pressure-resistant properties, and reduce dust leakage.

[0010] In one embodiment, the baffle is provided with bending parts at both ends, and the bending parts are fixed on the box body, which can not only fix the baffle, but also strengthen the overall supporting structure to ensure that the inner cavity as the secondary precipitation grid is stable and effective.

[0011] In one embodiment, two opposite side walls of the packaging box are provided with external sound transmission holes, and the inner side of the side wall is correspondingly provided with a baffle plate, and the baffle plate is provided with an internal sound transmission hole, so as to achieve a good effect of both sound transmission and dust blocking.

[0012] In one embodiment, the cavity is provided with a partition plate to improve the dust collection effect.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time.

[0014] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0015] It should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model.

[0016] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0017] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0019] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the packaging box structure for the embodiment;

[0021] Figure 2 Schematic diagram of the structure of the bracket device in the packaging box for the embodiment;

[0022] Figure 3 Schematic diagram of the structure of the bracket and the firecracker device in the packaging box for the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Refer to the attached Figures 1-3 , which reflects a specific structure of the present utility model. The box cannon includes a packaging box 2 for accommodating the firecrackers 1. After the firecrackers 1 are ignited by an ignition lead (not shown in the figure) led out of the box, they are set off inside the packaging box 2.

[0024] External sound transmission holes 3 are provided on the box wall of the packaging box 2. In the example, the external sound transmission holes 3 are provided on two opposite side walls of the packaging box 2, and baffles 4 are correspondingly provided on the inner sides of the side walls. Inner sound transmission holes 5 are provided on the baffles 4. The firecrackers 1 are placed inside the packaging box 2 on the inner side of the baffles 4.

[0025] A cavity 6 is formed between the side wall and the baffle 4. In the example, the cavity 6 is provided with a partition plate 7.

[0026] The inner sound transmission holes 5 are staggered with the outer sound transmission holes 3. In the example, thirty-six outer sound transmission holes 3 are distributed on the side wall of the box body to form an outer sound transmission area; twenty-four inner sound transmission holes 5 are distributed on the baffle plate 4 to form an inner sound transmission area; the outer sound transmission area and the inner sound transmission area are staggered in height, and the horizontal height of the outer sound transmission area is higher than that of the inner sound transmission area, so that the outer sound transmission area is located above the inner sound transmission area. When ignited, the staggered sound transmission holes make the explosion airflow entering the cavity form a rotating airflow, the lighter air rises upward and overflows from the outer sound transmission area at a high place, and the heavier dust falls and is deposited in the cavity. In other embodiments, the inner sound transmission holes 5 and the outer sound transmission holes 3 can also be staggered in other ways. As long as the orthographic projections of the outer sound transmission holes on the box wall and the inner sound transmission holes on the baffle plate do not overlap, they can be staggered to prevent dust from overflowing, and the purpose of the invention can be basically achieved. For example, each sound transmission hole is staggered individually or in groups; or staggered left and right or in other directions.

[0027] In the example, a bracket 8 for supporting firecrackers is provided in the packaging box inside the baffle 4. The bracket 8 is composed of two cross-shaped cardboards. A notch 9 is provided in the center of the top of the bracket 8, and the firecracker 1 is placed in the notch 9. The bracket 8 divides the inner cavity of the box body below the firecracker into four first-level sedimentation grids 10 for collecting paper scraps and dust, which is conducive to the deposition of firecracker dust during the firing process; the firecracker explodes at the top of the bracket 8, which can reduce the ignition and high-temperature carbonization of paper scraps, and greatly reduce the dust from the explosion.

[0028] In the example, the top of the packaging box 1 is provided with an inner cover plate 11 to prevent damage to the packaging box when the firecrackers are set off, strengthen the overall structure and load-bearing and pressure-resistant properties, and reduce dust leakage.

[0029] In the example, the two ends of the baffle 4 are provided with bending parts 12, and the bending parts 12 are fixed on the box body of the packaging box 1. The baffle 4 can be fixed, and the overall supporting structure can be strengthened to ensure that the inner cavity as the secondary precipitation grid is stable and effective.

[0030] With the above scheme, the inner and outer sound transmission holes constitute the external transmission channel of the firecracker sound, ensuring the sound transmission effect. When the firecracker 1 placed on the inner side of the baffle 4 is set off, most of the gunpowder scraps and dust carried by the explosion airflow are blocked by the baffle 4 and deposited in the four primary precipitation grids 10; a small part of the gunpowder scraps and dust pass through the inner sound transmission hole 5 and enter the cavity 6 with the explosion airflow, and then deposit in the cavity 6 as the airflow slows down and rotates turbulently. After two levels of precipitation, most of the dust will be deposited in the packaging box, effectively reducing dust pollution; at the same time, due to the large volume, the gunpowder scraps will not leak out of the packaging box from the outer sound transmission hole, so it can also prevent the gunpowder scraps from polluting the environment.

[0031] The embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and combines the accompanying drawings to specifically describe these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A box firecracker, comprising a packaging box for accommodating firecrackers, the firecrackers are set off in the packaging box, and a sound transmission hole is provided on the wall of the packaging box, characterized in that: A baffle is provided on the inner side of the box wall where the outer sound transmission hole is provided, and the firecrackers are placed in the packaging box on the inner side of the baffle; there is a cavity between the box wall and the baffle, and an inner sound transmission hole is provided on the baffle, and the inner sound transmission hole is staggered with the outer sound transmission hole.

2. A box gun as claimed in claim 1, characterized in that: A plurality of external sound transmission holes are distributed on the box wall to form an external sound transmission area; a plurality of internal sound transmission holes are distributed on the baffle to form an internal sound transmission area; the external sound transmission area and the internal sound transmission area are arranged in a staggered manner, and the external sound transmission area is located above the internal sound transmission area.

3. A box gun as claimed in claim 1 or 2, characterized in that: A bracket for supporting firecrackers is arranged in the packaging box inside the baffle, the bracket is composed of two cross-shaped plates, a notch is arranged in the center of the top of the bracket, and the firecrackers are placed in the notch.

4. A box gun as claimed in claim 3, characterized in that: An inner cover plate is arranged on the top of the packaging box.

5. A box gun as claimed in any one of claims 1, 2 and 4, characterized in that: The two ends of the baffle are provided with bending parts, and the bending parts are fixed on the box body.

6. A box gun as claimed in claim 3, characterized in that: The two ends of the baffle are provided with bending parts, and the bending parts are fixed on the box body.

7. A box gun as claimed in any one of claims 1, 2, 4 and 6, characterized in that: Two opposite side walls of the packaging box are provided with external sound transmission holes, and the inner sides of the side walls are correspondingly provided with baffles, and the baffles are provided with internal sound transmission holes.

8. A box gun as claimed in any one of claims 1, 2, 4 and 6, characterized in that: The cavity is provided with a partition plate.

9. A box gun as claimed in claim 7, characterized in that: The cavity is provided with a partition plate.

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