Firework inner tube mud bottom packaging structure and firework shell

Abstract

The application relates to a fireworks inner tube mud bottom packaging structure and a fireworks shell. The fireworks inner tube (2) comprises a tubular structure inner tube shell (21), the lower end opening of the inner tube shell (21) is provided with a bottom mud (22) formed in a press forming mode, the bottom mud (22) is fixedly sealed to the lower end opening of the inner tube shell (21), and the edge of the lower surface (221) of the bottom mud (22) is not lower than the lower end surface (211) of the inner tube shell (21); a fire transmission fuse (24) is arranged in the middle of the bottom mud (22), and the lower end of the fire transmission fuse (24) is exposed to the lower surface (221) of the bottom mud (22).

Description

Technical Field

[0001] This application belongs to the field of fireworks product technology, and relates to a mud-bottom sealing structure for the inner tube of fireworks, and a firework shell having the structure. Background Technology

[0002] Firework shells mainly consist of a launch tube and an inner tube. The bottom of the inner tube is usually sealed with yellow clay as a base mud. Because the inner tube has a large diameter, the base mud is easily shattered when the propellant explodes, causing the inner tube to fail to launch or to launch at a low height. Therefore, how to seal the bottom of the inner tube with clay is the problem that this application needs to solve. Summary of the Invention

[0003] In view of the problems existing in the prior art, the purpose of this application is to provide a mud bottom sealing structure for the inner tube of fireworks, so as to prevent the mud bottom from being blown up and increase the launch height of the inner tube of fireworks.

[0004] This application is achieved through the following technical solution.

[0005] This technical solution provides a firework inner tube mud bottom sealing structure. The firework inner tube includes a tubular inner tube shell. The lower end opening of the inner tube shell is provided with a bottom mud formed by compression molding. The bottom mud is fixedly sealed to the lower end opening of the inner tube shell. The edge of the lower surface of the bottom mud is not lower than the lower end face of the inner tube shell. A ignition lead is threaded through the middle of the bottom mud, and the lower end of the ignition lead is exposed on the lower surface of the bottom mud.

[0006] In one embodiment of this technical solution, the edge of the lower surface of the bottom mud is flush with the lower end face of the inner cylinder shell.

[0007] In one embodiment of this technical solution, the edge of the lower surface of the bottom mud is higher than the lower end face of the inner cylinder shell.

[0008] In one embodiment of this technical solution, the bottom mud extends outward from the side of the inner cylinder shell to form a skirt, and the skirt covers the lower end face of the inner cylinder shell.

[0009] In one embodiment of this technical solution, the side surface of the skirt is aligned with the side surface of the inner shell.

[0010] In one embodiment of this technical solution, the lower surface of the bottom mud is provided with an inwardly recessed groove, the lower end of the ignition lead is located in the groove, the groove is also filled with ignition tailings, and the lower end of the ignition lead is inserted into the ignition tailings.

[0011] Another technical solution of this application is to provide a firework shell, including a launch tube and a firework inner tube disposed inside the launch tube, wherein the firework inner tube includes the firework inner tube mud bottom sealing structure described in the above technical solution.

[0012] In one embodiment of this technical solution, the interior of the firework inner tube is filled with explosives, and the upper end of the ignition fuse is inserted into the explosives; The launching tube includes an outer shell with an opening at the top, the interior of which is filled with propellant, and the inner tube of the firework is located inside the outer shell and above the propellant, with a gap between the inner tube and the outer shell.

[0013] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0014] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0015] Figure 1 This is a cross-sectional structural diagram of a bird deterrent projectile shown in this application.

[0016] Figure 2 This is a schematic diagram of the overall structure of a bird-repelling projectile shown in one embodiment of this application.

[0017] Figure 3 This is a cross-sectional structural schematic diagram of a bird-repelling projectile shown in one embodiment of this application.

[0018] Figure 4 This is another cross-sectional structural schematic diagram of the bird-repelling projectile shown in one embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1-Launch tube; 11-Outer shell; 12-Propellant; 13-Sealing filler; 2-Firework inner tube; 21-Inner shell; 211-Lower end face; 22-Bottom mud; 221-Lower surface; 222-Skirt; 223-Groove; 23-Explosive; 24-Ignition fuse; 25-Ignition charge; Detailed Implementation The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown in the figure, this embodiment provides a firework shell, which can be used as a bird deterrent shell, a fireworks shell, etc. The firework shell includes a launch tube 1 and a firework inner tube 2 disposed inside the launch tube 1. The launch tube 1 includes an outer shell 11 with an upper opening. The outer shell 11 is filled with a propellant 12. The firework inner tube 2 is disposed inside the outer shell 11 and above the propellant 12. A gap is provided between the firework inner tube 2 and the outer shell 11.

[0022] In addition, the launch tube 1 may include, but is not limited to, an ignition element and a sealing filler 13. The ignition element may be a fuse, an electronic fuse, etc., which are not shown in the figure. The ignition element is used to ignite the propellant 12. When the propellant 12 explodes, it launches the inner tube 2 of the fireworks. The ignition element can be selected and set according to actual needs. The ignition element is existing technology. The sealing filler 13 is set at the upper outlet of the outer tube shell 11. The sealing filler 13 covers the inner tube 2 of the fireworks. The sealing filler 13 is usually made of one or more of the following: a paraffin layer, an adhesive layer, or a sealing powder layer. It is easily broken by the inner tube 2 of the fireworks during launch.

[0023] In this embodiment, the inner tube 2 of the fireworks includes a tubular inner shell 21. The lower end opening of the inner shell 21 is provided with a bottom mud 22 formed by compression molding. The bottom mud 22 is fixedly sealed to the lower end opening of the inner shell 21. The edge of the lower surface 221 of the bottom mud 22 is not lower than the lower end surface 211 of the inner shell 21. A ignition fuse 24 is threaded through the middle of the bottom mud 22. The lower end of the ignition fuse 24 protrudes from the lower surface 221 of the bottom mud 22. The upper end of the inner shell 21 can also be sealed with yellow mud. The interior of the inner tube 2 of the fireworks is filled with explosive 23. The upper end of the ignition fuse 24 is inserted into the explosive 23.

[0024] It should be noted that, as Figure 1 As shown, the lower surface 221 of the bottom mud 22 is lower than the lower end face 211 of the inner cylinder shell 21. That is, the lower surface 221 of the bottom mud 22 is recessed inward, causing the lower end face 211 of the inner cylinder shell 21 to protrude by a distance h. When the propellant 12 below is ignited, the pressure generated by the explosion will act on the inner wall of the bottom of the inner cylinder shell 21. On the one hand, the inner cylinder shell 21 expands outward, and the bottom mud 22 separates from the inner wall of the inner cylinder shell 21, causing the bottom mud 22 to fall off. On the other hand, the expanded inner shell makes the gap disappear, and the outer wall of the inner cylinder shell 21 is directly squeezed into the inner wall of the outer cylinder shell 11, increasing the friction between the two, reducing the firing speed of the inner cylinder shell 21, resulting in a lower firing height and failing to achieve the expected effect.

[0025] For example, such as Figure 3As shown, the edge of the lower surface 221 of the bottom mud 22 is flush with the lower end face 211 of the inner cylinder shell 21.

[0026] like Figure 4 As shown, the edge of the lower surface 221 of the bottom mud 22 is higher than the lower end face 211 of the inner cylinder shell 21. The side of the bottom mud 22 that is higher than the inner cylinder shell 21 extends outward to form a skirt 222. The skirt 222 covers the lower end face 211 of the inner cylinder shell 21, and the side surface of the skirt 222 is flush with the side surface of the inner cylinder shell 21.

[0027] In this embodiment, the lower surface 221 of the mud 22 is provided with an inwardly recessed groove 223, which is filled with ignition charge 25. The lower end of the ignition fuse 24 protruding from the mud 22 is located in the groove 223 and inserted into the ignition charge 25. In order to solve the problem that the ignition fuse 24 is not ignited by the propellant 12 or extinguishes after firing, the ignition charge 25 can avoid this problem. The ignition charge 25 is a gunpowder that is easily ignited by the propellant 12. The ignition charge 25 is available on the market, and its components are common knowledge in the art and will not be described in detail here.

[0028] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A clay bottom sealing structure for a fireworks inner tube, characterized in that, The inner tube (2) of the fireworks includes a tubular inner shell (21). The lower end opening of the inner shell (21) is provided with a bottom mud (22) formed by pressing. The bottom mud (22) is fixedly sealed to the lower end opening of the inner shell (21). The edge of the lower surface (221) of the bottom mud (22) is not lower than the lower end face (211) of the inner shell (21). A ignition wire (24) is passed through the middle of the bottom mud (22). The lower end of the ignition wire (24) is exposed on the lower surface (221) of the bottom mud (22).

2. The firework inner tube mud bottom sealing structure according to claim 1, characterized in that, The edge of the lower surface (221) of the bottom mud (22) is flush with the lower end face (211) of the inner shell (21).

3. The firework inner tube mud bottom sealing structure according to claim 1, characterized in that, The edge of the lower surface (221) of the bottom mud (22) is higher than the lower end face (211) of the inner shell (21).

4. The firework inner tube mud bottom sealing structure according to claim 3, characterized in that, The bottom mud (22) extends outward from the side of the inner cylinder shell (21) to form a skirt (222), which covers the lower end face (211) of the inner cylinder shell (21).

5. The firework inner tube mud bottom sealing structure according to claim 4, characterized in that, The side surface of the skirt (222) is aligned with the side surface of the inner shell (21).

6. The firework inner tube mud bottom sealing structure according to claim 1, characterized in that, The lower surface (221) of the bottom mud (22) is provided with an inwardly recessed groove (223), the lower end of the ignition lead (24) is located in the groove (223), the groove (223) is also filled with ignition tailing powder (25), and the lower end of the ignition lead (24) is inserted into the ignition tailing powder (25).

7. A type of firework shell, characterized in that, It includes a launch tube (1) and a firework inner tube (2) disposed within the launch tube (1), wherein the firework inner tube (2) includes a firework inner tube mud bottom sealing structure as described in any one of claims 1 to 6.

8. The firework shell according to claim 7, characterized in that, The interior of the firework inner tube (2) is filled with explosives (23), and the upper end of the ignition fuse (24) is inserted into the explosives (23); The launching tube (1) includes an outer shell (11) with an upper opening. The outer shell (11) is filled with propellant (12). The inner tube (2) of the fireworks is located inside the outer shell (11) and above the propellant (12). There is a gap between the inner tube (2) of the fireworks and the outer shell (11).

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