Safety firework

Abstract

The invention discloses a safety firework which comprises a base and a firework body, the firework body is detachably installed on the base and comprises a shell and a plurality of firework barrels, the firework barrels are filled with propellant powder, and the propellant powder comprises the following components in parts by weight: 1-3 parts of a fire extinguishing agent, 1-3 parts of a fire extinguishing agent, 1-3 parts of a fire extinguishing agent and 1-3 parts of a fire extinguishing agent. The explosive comprises the following components in parts by weight: 10-15 parts of aluminum powder, 2-5 parts of charcoal, 20-60 parts of an explosive promoter, 1-10 parts of ferric oxide, 0.8-5 parts of glutinous rice flour and 10-25 parts of a desensitizing agent. The gun propellant of the fireworks takes the aluminum powder, the charcoal, the explosion promoter, the ferric oxide and the like as main raw materials, all of which are common chemical reagents, are wide in source and easy to obtain, can be prepared by adopting simple powder mixing, stirring, granulating and drying processes, and is suitable for industrial batch production, and the process is safe and controllable; and by adding the desensitizer, the friction impact sensitivity of the firework gunpowder can be greatly reduced, and the safety of the firework gunpowder is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fireworks, and in particular to a safety type fireworks. Background Art

[0002] Fireworks and firecrackers have a long history. For thousands of years, fireworks have been used on many occasions, from Chinese New Year and other festivals to weddings, school entrance exams and promotions, to building completions and store openings. Whenever there's a need to express joy, people have traditionally set off firecrackers to celebrate, a practice that has shaped our country's unique cultural heritage.

[0003] Traditional fireworks bursting powder is primarily composed of metal powder, sulfur, and potassium nitrate. The metal powder acts as a reducing agent, the sulfur acts as a combustible and reducing agent, and the potassium nitrate acts as an oxidizing agent. The violent reaction between the reducing and oxidizing agents creates an explosion. Naturally, the reaction between sulfur and potassium nitrate releases toxic and hazardous gases such as sulfur oxides and nitrogen oxides. Furthermore, potassium nitrate is flammable and explosive, with high sensitivity to impact and friction, posing safety risks during processing, transportation, and storage. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a safe firework, wherein the propellant uses aluminum powder, charcoal, an explosion accelerator and iron oxide as main raw materials, which are common chemical reagents with a wide range of sources and are easily available. They can be prepared by a simple powder mixing, stirring, granulation and drying process, are suitable for industrial mass production, and the process is safe and controllable. In addition, by adding a desensitizing agent, the friction and impact sensitivity of the firework gunpowder can be greatly reduced, thereby improving its safety.

[0005] The present invention provides a technical solution to solve the above problems: a safety firework, comprising a base and a firework body, wherein the firework body is detachably mounted on the base, the firework body comprising a shell and a plurality of firework tubes, wherein the firework tubes are filled with propellant, and the propellant comprises the following components in parts by weight:

[0006] 10-15 parts of aluminum powder, 2-5 parts of charcoal, 20-60 parts of explosion accelerator, 1-10 parts of iron oxide, 0.8-5 parts of glutinous rice flour, and 10-25 parts of desensitizing agent.

[0007] Preferably, the propellant comprises the following components in parts by weight:

[0008] 10 parts of aluminum powder, 2 parts of charcoal, 22 parts of explosion accelerator, 3 parts of iron oxide, 1.25 parts of glutinous rice flour, and 11 parts of desensitizing agent.

[0009] Preferably, the propellant comprises the following components in parts by weight:

[0010] 12 parts of aluminum powder, 3 parts of charcoal, 29 parts of explosion accelerator, 10 parts of iron oxide, 3 parts of glutinous rice flour, and 25 parts of desensitizing agent.

[0011] Preferably, the propellant comprises the following components in parts by weight:

[0012] 15 parts of aluminum powder, 5 parts of charcoal, 30 parts of explosion accelerator, 2 parts of iron oxide, 2 parts of glutinous rice flour, and 13 parts of desensitizing agent.

[0013] Preferably, the raw materials of the desensitizing agent include magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, dicyclopentadiene iron, and polyazide glycidyl ether.

[0014] Preferably, the components of the desensitizing agent raw materials are:

[0015] 1.5-3 parts of magnesium oxide, 2-4 parts of zinc oxide, 2-4 parts of calcium stearate, 1-3 parts of ammonium dinitramide, 2-7 parts of bismuth trioxide, 9-12 parts of dicyclopentadiene iron, and 6-8 parts of polyazide glycidyl ether.

[0016] Preferably, the explosion promoter is a combination of one or more of potassium perchlorate, potassium chlorate and potassium permanganate.

[0017] Preferably, the method for preparing the propellant comprises the following steps:

[0018] S1. preparing a desensitizing agent;

[0019] S2, adding glutinous rice flour and aluminum powder to ethyl acetate, stirring until completely dissolved, and stirring evenly to obtain a dispersion;

[0020] S3, adding iron oxide, desensitizing agent and explosion accelerator to the dispersion, stirring evenly to obtain a slurry;

[0021] S4. The obtained slurry is extruded and granulated through a granulator of a granulation plate, and the obtained particles are dried to obtain the final propellant.

[0022] Preferably, the preparation method of the desensitizing agent in S1 is:

[0023] S1.1. Mix magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, and dicyclopentadienyl iron, grind, and sieve to obtain a mixed powder;

[0024] S1.2. Then, polyazide glycidyl ether is added and stirred and mixed evenly under ultrasonic vibration to prepare the desensitizing agent.

[0025] Preferably, the specification of the mixed powder in S1.1 is between 200 mesh and 200 mesh.

[0026] Compared with the prior art, the advantages of the present invention are: the propellant of the fireworks of the present invention uses aluminum powder, charcoal, explosion accelerator and iron oxide as main raw materials, all of which are common chemical reagents with a wide range of sources and are easily available. They can be prepared by a simple powder mixing, stirring, granulation and drying process, are suitable for industrial mass production, and the process is safe and controllable; and by adding a desensitizing agent, the friction and impact sensitivity of the fireworks powder can be greatly reduced, thereby improving its safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a flowchart of the preparation of the propellant of the present invention;

[0030] Figure 3 This is a flowchart of the preparation of the insensitivity agent of the present invention;

[0031] Figure 4 This is a cross-sectional view of the present invention Figure 1 ;

[0032] Figure 5 yes Figure 4 A magnified schematic diagram of point A in the middle;

[0033] Figure 6 yes Figure 4 A magnified schematic diagram of point B in the middle;

[0034] Figure 7 It is a top view of the information firecracker base of the present invention;

[0035] Figure 8 This is a cross-sectional view of the present invention Figure 2 ;

[0036] Figure 9 yes Figure 8 Enlarged schematic diagram of point C in the middle.

[0037] The accompanying drawings are marked with: 1. Base, 2. Shell, 3. Firework barrel, 4. Firing barrel, 5. Positioning plate, 6. Snap-fit groove, 7. Inclined surface one, 8. Snap-fit rod, 9. Spring one, 10. Connecting rod, 11. Spring two, 12. Limiting plate, 13. Mounting cavity, 14. Inclined surface two, 15. Matching groove, 16. Follow-up column, 17. Fixing hole, 18. Damping ring, 19. Fixed barrel, 20. Limiting ring, 21. Movable barrel, 22. Fixed plate. DETAILED DESCRIPTION

[0038] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0039] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. Throughout the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0041] In the present invention, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0042] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0043] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0044] Example 1

[0045] This embodiment discloses a propellant for use in fireworks, wherein the propellant comprises the following components in parts by weight:

[0046] 10-15 parts of aluminum powder, 2-5 parts of charcoal, 20-60 parts of explosion promoter, 1-10 parts of iron oxide, 0.8-5 parts of glutinous rice flour, 10-25 parts of desensitizing agent, wherein the explosion promoter is a combination of one or more of potassium perchlorate, potassium chlorate and potassium permanganate. The explosion promoter is used to increase the intensity of the reaction system, while increasing the explosion temperature and gas production, which is conducive to forming a greater shock wave pressure and increasing the explosion dispersion radius of the fireworks.

[0047] Example 2

[0048] The propellant comprises the following components in parts by weight:

[0049] 10 parts of aluminum powder, 2 parts of charcoal, 22 parts of explosion accelerator, 3 parts of iron oxide, 1.25 parts of glutinous rice flour, and 11 parts of desensitizing agent.

[0050] Example 3

[0051] The propellant comprises the following components in parts by weight:

[0052] 12 parts of aluminum powder, 3 parts of charcoal, 29 parts of explosion accelerator, 10 parts of iron oxide, 3 parts of glutinous rice flour, and 25 parts of desensitizing agent.

[0053] Example 4

[0054] The propellant comprises the following components in parts by weight:

[0055] 15 parts of aluminum powder, 5 parts of charcoal, 30 parts of explosion accelerator, 2 parts of iron oxide, 2 parts of glutinous rice flour, and 13 parts of desensitizing agent.

[0056] Example 5

[0057] The raw materials of the desensitizing agent include magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, dicyclopentadiene iron, and polyazide glycidyl ether.

[0058] Specifically, the components of the desensitizing agent raw materials are 1.5-3 parts of magnesium oxide, 2-4 parts of zinc oxide, 2-4 parts of calcium stearate, 1-3 parts of ammonium dinitramide, 2-7 parts of bismuth trioxide, 9-12 parts of dicyclopentadiene iron, and 6-8 parts of polyazide glycidyl ether.

[0059] Among them, the insensitivity agent can greatly reduce the friction and impact sensitivity of fireworks gunpowder, thereby improving its safety. The gunpowder burns slowly, and after ignition, it will only burn gradually if it is not in a tightly sealed environment, and will not instantly produce a violent explosion to form a strong shock wave; it effectively avoids accidents during the production process of fireworks.

[0060] Example 6

[0061] This embodiment discloses a method for preparing the propellant in Examples 1-5. Specifically, the method for preparing the propellant includes the following steps:

[0062] S1. preparing a desensitizing agent;

[0063] S2, adding glutinous rice flour and aluminum powder to ethyl acetate, stirring until completely dissolved, and stirring evenly to obtain a dispersion;

[0064] S3, adding iron oxide, desensitizing agent and explosion accelerator to the dispersion, stirring evenly to obtain a slurry;

[0065] S4. The obtained slurry is extruded and granulated through a granulator of a granulation plate, and the obtained particles are dried to obtain the final propellant.

[0066] In this embodiment, further, the preparation method of the desensitizing agent in S1 is:

[0067] S1.1, magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, and dicyclopentadienyl iron are mixed, ground, and then sieved to obtain a mixed powder, wherein the specification of the mixed powder is between 200 mesh and 200 mesh;

[0068] S1.2. Then, polyazide glycidyl ether is added and stirred and mixed evenly under ultrasonic vibration to prepare the desensitizing agent.

[0069] Example 7

[0070] This embodiment discloses a safety firework, comprising a base, a firework body, and a positioning release mechanism. The firework body is detachably mounted on the base. The firework body comprises a shell and a plurality of firework tubes. The firework tubes are filled with the propellant described in Examples 1-6. The base 1 is provided with a plurality of positioning components for positioning the firework body.

[0071] The positioning assembly includes a clamping rod 8 and a spring 9. The base 1 is provided with a mounting hole for accommodating the positioning assembly. One end of the clamping rod 8 is fixedly connected to the spring 9, and the other end can be clamped to the firework body. In this embodiment, the firework body is positioned using the positioning assembly, thereby achieving a detachable connection between the firework base and the firework body. This allows the firework base to be recycled and reused after the firework is fired, saving costs and promoting environmental protection.

[0072] The firework body includes a shell 2 and a plurality of firework tubes 3. The plurality of firework tubes 3 are vertically installed inside the shell 2. A positioning plate 5 is provided at the lower part of the shell 2. The positioning plate 5 is provided with a clamping groove 6 that can be clamped with a clamping rod 8.

[0073] The positioning release mechanism can be used to release the positioning of the firecracker body by the positioning component.

[0074] Furthermore, in order to improve the smoothness of the cooperation between the positioning plate and the clamping rod, the upper part of the end of the clamping rod 8 that is clamped with the clamping groove 6 is provided with an inclined surface 7. When the shell is installed, the positioning plate at the bottom of the shell first contacts the inclined surface 1, and the clamping rod is squeezed into the mounting hole during the contact process. When the clamping groove on the positioning plate is relative to the position of the clamping rod, the clamping rod extends from the mounting hole into the clamping groove under the action of spring 1 and clamps with the clamping groove. Since the lower end surface of the clamping rod is a plane, the clamping groove can be well limited.

[0075] In this embodiment, further, the positioning release structure includes a firing cylinder 4, a follower column 16 and a connecting component;

[0076] The firing cylinder 4 is movably arranged in the housing 2 and is filled with medicine. The medicine in the firing cylinder 4 is ignited last.

[0077] The base 1 is provided with a fixing hole 17 for mounting a follower column 16. The follower column 16 can move up and down in the fixing hole 17. A through hole is provided on the housing 2 at a position corresponding to the fixing hole 17. One end of the follower column 16 can pass through the through hole and contact the lower end surface of the firing tube 4.

[0078] The connecting component is installed in the mounting hole, one end of the mounting hole is connected to the fixing hole 17, one end of the connecting component is connected to the spring 9, and the other end is in contact with the follower column 16. When the medicine in the firing tube 4 is ignited and fired, the firing tube 4 is driven by the recoil force to drive the follower column 16 to move downward. When the follower column 16 moves to the specified position, the connecting component drives the clamping rod 8 to retract into the mounting hole, thereby releasing the positioning of the positioning plate 5.

[0079] Furthermore, in order to prevent the firing tube from moving downward due to external force during transportation or storage, causing the positioning release structure to open and release the positioning of the firecracker body, the firing tube 4 includes a fixed tube 19 and a movable tube 21, and a fixed plate 22 is provided in the housing 2. The fixed tube 19 is vertically fixedly mounted on the fixed plate 22, and the movable tube 21 is movably mounted on the lower end of the fixed tube 19, and the lower end surface of the movable tube 21 abuts against the follower column 16. The specific installation method between the fixed tube and the fixed plate is as follows: a positioning hole for the fixed tube 19 to pass through is provided on the fixed plate 22, and a limiting ring 20 is provided on the fixed tube 19 to abut against the upper end surface of the fixed plate 22.

[0080] In the above scheme, when the fixed cylinder is fixedly mounted on the fixed plate, when the firing cylinder is subjected to external force during transportation or storage, since the movable cylinder is mounted inside the shell, the external force will only act on the fixed cylinder, and the fixed plate provides a fixing effect for the fixed cylinder. Therefore, the fixed cylinder will not be displaced by the external force, and the firing cylinder below the fixed cylinder will not be affected.

[0081] In this embodiment, specifically, the connecting component includes a connecting rod 10, a limit plate 12 and a spring 2 11. One end of the connecting rod 10 is connected to the spring 1 9, and the other end can be extended into the fixing hole 17. The limit plate 12 is installed on the connecting rod 10, and the mounting hole is provided with a mounting cavity 13 for accommodating the limit plate 12. The spring 2 11 is arranged in the mounting cavity 13, and one end of the spring 2 11 abuts against the limit plate 12, and the other end abuts against the cavity wall of the mounting cavity 13. The follower column 16 is provided with a mating groove 15 that can cooperate with the connecting rod 10. When the follower column 16 moves downward to the specified position, one end of the connecting rod 10 can enter the mating groove 15. Furthermore, in order to enable the follower rod to return to its original position after the base is removed, a second inclined surface 14 is provided on the lower end surface of one end of the connecting rod 10 that cooperates with the matching groove 15. When the base is removed, the staff can pull the follower column upwards, and the matching groove squeezes the second inclined surface to retract the connecting rod into the mounting hole, thereby resetting the follower column.

[0082] In the above scheme, when the medicine in the firing cylinder is ignited and ejected, the firing cylinder is subjected to a downward recoil force, and the movable cylinder in the firing cylinder moves downward to drive the follower column to move downward. When the follower column moves to the specified position, the connecting rod enters the matching groove under the action of the second spring. During the movement of the connecting rod, the clamping rod is retracted into the mounting hole, thereby releasing the positioning of the firework body (such as Figure 8 Therefore, in this solution, the base of the firework can release the positioning of the firework body only after the medicine in the firing tube is completely ignited, which can prevent the positioning components in the firework from being abnormally released under the action of external forces during transportation or ignition, thereby improving the stability of the connection between the firework body and the base.

[0083] Among them, it should be noted that, in order to prevent the follower column from axially moving during transportation, a damping ring 18 is provided at the lower end of the hole wall of the fixing hole 17, and the inner ring of the damping ring 18 is in contact with the outer circumferential surface of the follower column 16. The damping ring 18 can provide the follower column 16 with an axial pre-tightening force for installation. At the same time, under the action of spring 2, one end of the connecting rod abuts against the outer circumferential surface of the follower column, which can also provide friction in the axial direction, further preventing the follower column from axially moving during transportation.

[0084] The firing tube 4 is arranged at the center of the shell 2 , and the follower column 16 is installed at the center of the base 1 .

[0085] The above description is merely a description of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the claims. The present invention is not limited to the above embodiment, and variations in the specific structure are permitted. Any variations within the scope of the independent claims of the present invention are also within the scope of protection of the present invention.

Claims

1. A safety firework, comprising a base and a firework body, wherein the firework body is detachably mounted on the base, and characterized in that: The firework body includes a shell and a plurality of firework tubes, wherein the firework tubes are filled with propellant, and the propellant includes the following components in parts by weight: 10-15 parts of aluminum powder, 2-5 parts of charcoal, 20-60 parts of explosion accelerator, 1-10 parts of iron oxide, 0.8-5 parts of glutinous rice flour, and 10-25 parts of desensitizing agent.

2. A safety firework according to claim 1, characterized in that: The propellant comprises the following components in parts by weight: 10 parts of aluminum powder, 2 parts of charcoal, 22 parts of explosion accelerator, 3 parts of iron oxide, 1.25 parts of glutinous rice flour, and 11 parts of desensitizing agent.

3. The safety firework according to claim 1, characterized in that: The propellant comprises the following components in parts by weight: 12 parts of aluminum powder, 3 parts of charcoal, 29 parts of explosion accelerator, 10 parts of iron oxide, 3 parts of glutinous rice flour, and 25 parts of desensitizing agent.

4. The safety firework according to claim 1, characterized in that: The propellant comprises the following components in parts by weight: 15 parts of aluminum powder, 5 parts of charcoal, 30 parts of explosion accelerator, 2 parts of iron oxide, 2 parts of glutinous rice flour, and 13 parts of desensitizing agent.

5. The safety firework according to claim 1, characterized in that: The raw materials of the desensitizing agent include magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, dicyclopentadiene iron, and polyazide glycidyl ether.

6. The safety firework according to claim 5, characterized in that: The components of the desensitizing agent raw materials are: 1.5-3 parts of magnesium oxide, 2-4 parts of zinc oxide, 2-4 parts of calcium stearate, 1-3 parts of ammonium dinitramide, 2-7 parts of bismuth trioxide, 9-12 parts of dicyclopentadiene iron, and 6-8 parts of polyazide glycidyl ether.

7. The safety firework according to claim 1, characterized in that: The explosion accelerator is a combination of one or more of potassium perchlorate, potassium chlorate and potassium permanganate.

8. The safety firework according to claim 6, characterized in that: The preparation method of the propellant comprises the following steps: S1. preparing a desensitizing agent; S2, adding glutinous rice flour and aluminum powder to ethyl acetate, stirring until completely dissolved, and stirring evenly to obtain a dispersion; S3, adding iron oxide, desensitizing agent and explosion accelerator to the dispersion, stirring evenly to obtain a slurry; S4. The obtained slurry is extruded and granulated through a granulator of a granulation plate, and the obtained particles are dried to obtain the final propellant.

9. The safety firework according to claim 8, characterized in that: The preparation method of the desensitizing agent in S1 is: S1.

1. Mix magnesium oxide, zinc oxide, calcium stearate, ammonium dinitramide, bismuth trioxide, and dicyclopentadienyl iron, grind, and sieve to obtain a mixed powder; S1.2, then add polyazide glycidyl ether, and stir and mix evenly under ultrasonic vibration to prepare the desensitizing agent.

10. The safety firework according to claim 9, characterized in that: The specification of the mixed powder in S1.1 is between 200 mesh and 200 mesh.

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