Display shell capable of generating red smoke effect
Through the meticulous design of the effect powder, detonating powder, and propellant of the fireworks shell, a vivid and lasting red smoke effect was achieved, solving the problem of the dull color of existing red smoke. It has the advantages of high safety, economy and practicality, and environmental friendliness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LIUYANG YIHELONG FIREWORKS GRP
- Filing Date
- 2025-12-19
- Publication Date
- 2026-04-28
AI Technical Summary
The existing fireworks that produce red smoke effects have low color expressiveness, and the red smoke effect is dull and not vivid enough.
The fireworks shell design uses a specific weight ratio of effect charge, detonating charge, and propellant to achieve efficient generation of red smoke through chemical reaction and physical interaction. The synergistic effect of components such as ammonium perchlorate, sulfur, magnesium-aluminum alloy, and polyvinyl chloride ensures the vividness and persistence of the smoke.
It provides a vivid, long-lasting (10-15 seconds) red smoke effect with wide coverage, and is highly safe, cost-effective, and environmentally friendly. The synergy between the ingredients optimizes safety and cost-effectiveness.
Smart Images
Figure CN121932873A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a firework shell, and more particularly to a firework shell that produces a red smoke effect. Background Technology
[0002] Fireworks that produce a smoke effect, commonly known as colored smoke, were originally daytime fireworks used in celebrations, film special effects, or military exercises to generate colored smoke. Their smoke generation mechanism involves the heat generated by the reaction vaporizing the smoke-producing agent, which then condenses upon contact with air to form aerosol smoke. A key characteristic is that the smoke is clearly visible during the day and has vibrant colors. In recent years, their application has been extended to nighttime displays.
[0003] The drawback of existing fireworks that produce red smoke effects is that the color of the smoke is not very expressive, and the red smoke effect is dull and not vivid enough. Summary of the Invention
[0004] To address the aforementioned drawbacks, the technical problem this invention aims to solve is to provide a firework shell that produces a bright red smoke effect. The technical solution adopted by this invention is a firework shell that produces a red smoke effect, comprising a spherical projectile filled with explosive and effect powder, and a paper cup holder containing the propellant. The paper cup holder is equipped with an ignition fuse for igniting the propellant. The spherical projectile and the paper cup holder are connected by a fuse to transmit the ignition between the propellant and the explosive. The key feature is that the explosive is installed at the center of the spherical projectile's inner cavity, and the effect powder is filled around the explosive within the inner cavity of the spherical projectile. The effective drug is composed of the following components in the indicated weight ratios: 9-11 parts ammonium perchlorate, 14-16 parts sulfur, 24-26 parts magnesium-aluminum alloy, 14-16 parts polyvinyl chloride, 4-6 parts sodium oxalate, 4-6 parts potassium hypochlorite, and 14-16 parts 1-methylaminoanthraquinone. The components are mixed evenly using conventional methods and then granulated to obtain the final product. The explosive is composed of the following components in the indicated weight ratios: 24-26 parts charcoal, 14-16 parts strontium carbonate, 9-11 parts starch, and 19-21 parts rice husks. The components are mixed evenly using general methods and then granulated to obtain the explosive. The propellant is composed of the following components in the indicated weight ratios: 9-11 parts potassium perchlorate, 4-6 parts strontium nitrate, 14-16 parts sulfur, 19-21 parts magnesium-aluminum alloy, 14-16 parts phenol-formaldehyde resin, 29-31 parts polyvinyl chloride, and 4-6 parts starch. The components are mixed evenly using conventional methods and then granulated to obtain the final product.
[0005] Preferably, the active ingredient is composed of the following components in the indicated weight ratios: 10 parts ammonium perchlorate, 15 parts sulfur, 25 parts magnesium-aluminum alloy, 15 parts polyvinyl chloride, 5 parts sodium oxalate, 5 parts potassium hypochlorite, and 15 parts 1-methylaminoanthraquinone. The explosive is composed of the following components in the indicated weight ratios: 25 parts charcoal, 15 parts strontium carbonate, 10 parts starch, and 20 parts rice husks. The propellant is composed of the following components in the indicated weight ratios: 10 parts potassium perchlorate, 5 parts strontium nitrate, 15 parts sulfur, 20 parts magnesium-aluminum alloy, 15 parts phenol-formaldehyde resin, 30 parts polyvinyl chloride, and 5 parts starch.
[0006] When the fireworks are set off, the shells are placed inside the launcher barrel, the ignition fuse is lit, and the propellant in the paper cup holder explodes, launching the spherical shell into the air. The fuse ignited by the propellant ignites the detonating charge after a set delay, which explodes the spherical shell. At the same time, the detonating charge ignites the effect charge, producing smoke. The falling smoke creates a spectacular display.
[0007] The beneficial effects of this invention lie in its ability to efficiently provide vivid, long-lasting (10-15 seconds) red smoke with a wide coverage area, thanks to its synergistic color and diffusion mechanism. It also boasts advantages such as high safety, cost-effectiveness, and environmental friendliness. Through the meticulous design of the effect explosive, detonator, and propellant, this invention demonstrates exceptional synergy: the propellant provides reliable propulsion, the detonator ensures precise detonation and initial color, and the effect explosive generates high-quality red smoke. The chemical reactions and physical interactions between the components not only enhance the red output but also optimize safety and cost-effectiveness. This innovative design for red smoke fireworks combines artistry with engineering reliability.
[0008] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0009] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening 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 intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of the firework shell that produces the red smoke effect in the embodiment. Detailed Implementation
[0011] See appendix Figure 1 This describes a specific structure of the present invention. The firework shell that produces a red smoke effect consists of a spherical projectile 3 filled with explosive charge 1 and effect charge 2, and a paper cup holder 5 containing propellant 4. The side wall of the paper cup holder 5 is provided with an ignition fuse 6 for igniting the propellant 4. The spherical projectile 3 and the paper cup holder 5 are connected by a fuse 7 to transmit ignition between the propellant 4 and the explosive charge 2. Explosive charge 1 is installed in the center of the inner cavity of the spherical projectile 3, and effect charge 2 is filled around explosive charge 1 in the inner cavity of the spherical projectile 3.
[0012] In the example, the effective drug is composed of the following components in the indicated weight ratios: 10 parts ammonium perchlorate, 15 parts sulfur, 25 parts magnesium-aluminum alloy, 15 parts polyvinyl chloride, 5 parts sodium oxalate, 5 parts potassium hypochlorite, and 15 parts 1-methylaminoanthraquinone. The powders of the above components are weighed, mixed evenly using a general method, and granulated to obtain the final product.
[0013] The explosive is composed of the following components in the indicated weight ratios: 25 parts charcoal, 15 parts strontium carbonate, 10 parts starch, and 20 parts rice husks. Except for the rice husks, all components are in powder form. They are mixed evenly using general methods and then granulated to obtain the explosive.
[0014] The propellant consists of the following components in the indicated weight ratios: 9-11 parts potassium perchlorate, 4-6 parts strontium nitrate, 14-16 parts sulfur, 19-21 parts magnesium-aluminum alloy, and phenol-formaldehyde resin (Resinox, C...). 48 H 42 14-16 parts of O7, 29-31 parts of polyvinyl chloride, and 4-6 parts of starch; The propellant consists of the following components in the indicated weight ratios: 10 parts potassium perchlorate, 5 parts strontium nitrate, 15 parts sulfur, 20 parts magnesium-aluminum alloy, 15 parts phenol-formaldehyde resin, 30 parts polyvinyl chloride, and 5 parts starch. The powdered components are mixed evenly using standard methods and then granulated to obtain the final product.
[0015] Designed according to projectile specifications and launch height, in the example, taking a spherical projectile 1 with a diameter of 75mm as an example, its total effect charge is approximately 300 grams; the total detonating charge is approximately 10 grams; and the propellant is approximately 40 grams. It should be noted that smoke effects typically require multiple single-color fireworks shells of various colors to be combined and ignited synchronously, a typical product being the "Seven-Colored Auspicious Clouds" display. Under this premise, based on the requirements of effect matching, ignition coordination, safety supervision, and standardized production, the projectile specifications, structure, and charge amount of each color of fireworks shell need to be standardized. This also places higher demands on the propellant design of each color of fireworks shell. Through the collaborative efforts of our technical team, we have successfully completed the design task. The propellant design of each color of fireworks shell is adapted to the standardized projectile specifications, structure, and charge amount. Standardized specifications simplify the manufacturing and ignition process, improve safety and performance consistency, and greatly facilitate safety supervision and control.
[0016] When ignited, the firework shell is placed inside the launch tube by the lifting rope 8, the ignition fuse is lit, the propellant in the paper cup holder explodes and launches the spherical shell into the air. The fuse ignited by the propellant ignites the detonating charge after a set delay and explodes the spherical shell. At the same time, the detonating charge ignites the effect charge to produce smoke. The smoke falls and hangs down, creating a spectacular display.
[0017] The key advantages of the above technical solution lie in its high efficiency, safety, and color performance, especially in ensuring the stability and intensity of the red smoke effect through component sharing and chemical reaction sequence. 1. The overall effect of the drug acts as the core for red smoke generation: Ammonium perchlorate and potassium hypochlorite ensure complete combustion, reduce residues, prevent blackening of smoke, improve combustion efficiency, and produce pure smoke; sulfur and magnesium-aluminum alloy release high-energy heat, rapidly generating a large amount of heat and light, helping to volatilize the dye and form smoke. The addition of magnesium and aluminum enhances brightness, but through formulation balance (such as PVC buffer), it avoids excessively bright smoke that could affect red color rendering; PVC acts as a binder and auxiliary fuel, providing structural strength during granulation to ensure uniform particle size; during combustion, it decomposes into hydrogen chloride gas, helping to disperse smoke particles and improve smoke diffusion and persistence (smoke duration can be extended by 20-30%); sodium oxalate decomposes to produce carbon monoxide and carbon dioxide, increasing gas volume and making the smoke more fluffy; at the same time, oxalate ions can stabilize strontium ions from other formulations, enhancing red luminescence efficiency; 1-methylaminoanthraquinone volatilizes at high temperatures and forms red smoke (absorbing blue-green light and reflecting red light). Its proportions are sufficient to ensure that the smoke color is bright and saturated, and that it has good heat resistance (decomposition temperature of about 250°C), preventing fading during combustion.
[0018] This formulation is specifically optimized for red smoke, with an oxidant-fuel balance (approximately 15-17 parts oxidant and 38-42 parts fuel) ensuring moderate heat release (approximately 1500-2000°C), both volatilizing the dye and incompletely burning smoke particles. The dye and metallic fuel work synergistically, resulting in pure smoke color (CIE red coordinates x≈0.65, y≈0.35), and the granulation process enhances safety (reducing the risk of dust explosions). Overall, the formulation is low-cost (using common chemical raw materials) and suitable for large-scale production.
[0019] 2. The detonating charge is located at the center of the spherical projectile and is used for detonation and initial color enhancement. After granulation, the detonating charge forms a low-sensitivity explosive, ensuring controlled detonation. It explodes after being ignited by a fuse, dispersing and igniting the effect charge. Charcoal serves as the primary fuel, with a moderate burning rate (approximately 0.5-1 cm / s), providing a stable heat source. Starch acts as a binder and auxiliary fuel, enhancing particle strength and generating gas during combustion to aid in the diffusion of the effect charge. It effectively reduces the blast shock wave (peak pressure approximately 5-10 MPa), preventing premature damage to the smoke structure. Strontium carbonate ions (Sr²⁺) emit intense red light (wavelength 606 nm) at high temperatures, serving as a "preheating" light source to enhance the overall red effect. Strontium carbonate has a low decomposition temperature (approximately 1200°C), generating initial red light during the detonation stage, synergistically with the effect charge dye. Rice husks, acting as an inert filler and gas generator, release water vapor and carbon dioxide upon combustion, increasing gas volume and making the explosion more "fluffy," evenly dispersing the effect agent particles and increasing the smoke coverage area (diffusion radius increased by 15-20%). The detonator formulation is designed for low sensitivity (no strong oxidizer), reducing the risk of accidental detonation; the high proportion of strontium carbonate ensures a consistent red theme throughout. The synergy with the effect agent is manifested in the fact that the explosive heat of the detonator (approximately 1000°C) directly activates the effect agent dye, while strontium ions and 1-methylaminoanthraquinone dye form a color superposition, making the smoke more vibrant.
[0020] 3. The propellant is used for propulsion and to provide auxiliary color support. After granulation, the propellant forms high-density particles to optimize thrust. Potassium perchlorate and sulfur work together to provide high thrust with a controllable burning rate (approximately 2-5 cm / s), ensuring a smooth ascent to the predetermined altitude. Magnesium-aluminum alloy, as a high-energy fuel, increases thrust efficiency (specific impulse approximately 80-100 s) and simultaneously generates white light for auxiliary illumination. Strontium nitrate, as a secondary oxidizer and red luminescent agent, releases strontium ions during propulsion, producing a faint red light that complements the detonating and effect propellants, preventing color discontinuity during launch. This formula provides stable thrust (burning rate can be adjusted via the binder ratio), and the addition of strontium nitrate gives the launch trajectory a slightly reddish tint, enhancing visual appeal. The high polymer content in the formula effectively reduces mechanical sensitivity, meeting safety standards.
[0021] 4. The strong synergy between formulations constitutes a system-level advantage. This synergy is the core innovation of this solution, achieving a highly efficient and safe red smoke effect through chemical and physical interactions. This synergy is manifested on three levels: Ignition and energy transfer sequence: The propellant ignites first (via the paper cup holder ignition fuse), generating high-temperature gas that propels the projectile; the fuse transfers the flame to the detonating charge, which explodes (utilizing the rapid combustion of charcoal and starch) to disperse the effect charge particles; the effect charge then ignites, and the magnesium-aluminum alloy and sulfur release high heat, activating the 1-methylaminoanthraquinone dye. This sequence design ensures efficient energy transfer, avoiding misfires or premature detonation (reducing the failure rate to <1%).
[0022] Color Enhancement Synergy: Both the strontium carbonate in the explosive charge and the strontium nitrate in the propellant release strontium ion red light, which superimposes with the 1-methylaminoanthraquinone dye in the effect charge, forming a "triple-layer red enhancement." Sodium oxalate stabilizes strontium ions in the effect charge, improving color purity; the strong light from the magnesium-aluminum alloy is absorbed by the dye and converted into red output. In tests, this synergy increased the red saturation of the smoke by 20-30%, while maintaining uniform color.
[0023] Ingredient sharing and safety optimization: Sulfur, magnesium-aluminum alloys, and PVC appear in multiple formulations (e.g., sulfur in the effect charge and propellant), ensuring reaction consistency and reducing compatibility issues. PVC and starch serve as universal binders, reducing overall sensitivity; rice husks buffer the explosion in the detonator, protecting the effect charge structure. Synergistic benefits include: reduced raw material costs (shared materials account for 30% of the total formulation) and improved environmental adaptability (e.g., less affected by humidity).
[0024] As can be seen from the above, this invention benefits from a synergistic color and diffusion mechanism, efficiently providing a vivid and long-lasting (10-15 seconds) red smoke with a wide coverage area; it also has the following advantages: High safety: For example, the formulation avoids highly sensitive substances, and the granulation process reduces dust; the design of the fuse and low-sensitivity detonator prevents accidents.
[0025] Economical and practical: It uses inexpensive raw materials such as rice husks and starch, resulting in low production costs.
[0026] Environmentally friendly: Compared to traditional fireworks, it leaves less residue (polyvinyl chloride and resin are completely burned) and has low smoke toxicity (the dyes contain no heavy metals).
[0027] This invention demonstrates exceptional synergy through the meticulous design of the effect charge, detonator, and propellant: the propellant provides reliable propulsion, the detonator ensures precise detonation and initial color, and the effect charge generates high-quality red smoke. The chemical reactions (such as redox chains) and physical interactions (such as gas diffusion) between the components not only enhance the red output but also optimize safety and cost-effectiveness. This innovative design for red smoke fireworks combines artistry with engineering reliability.
[0028] The embodiments of the present invention disclosed above are merely illustrative of the invention. The embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in conjunction with the accompanying drawings to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. However, the invention can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the invention. Therefore, the invention is limited only by the claims and their full scope and equivalents, and not by the specific embodiments disclosed.
Claims
1. A firework shell that produces a red smoke effect, comprising a spherical projectile filled with an explosive charge and an effect charge, and a paper cup holder containing the propellant, the paper cup holder being provided with an ignition fuse for igniting the propellant, and the spherical projectile and the paper cup holder being connected by a fuse for ignition; characterized in that, The explosive charge is installed at the center of the spherical projectile's internal cavity, and the effect charge is filled around the explosive charge in the internal cavity of the spherical projectile; The effective drug is composed of the following components in the indicated weight ratios: 9-11 parts ammonium perchlorate, 14-16 parts sulfur, 24-26 parts magnesium-aluminum alloy, 14-16 parts polyvinyl chloride, 4-6 parts sodium oxalate, 4-6 parts potassium hypochlorite, and 14-16 parts 1-methylaminoanthraquinone. The powders of each component are mixed evenly using conventional methods and then granulated to obtain the final product. The explosive is composed of the following components in the indicated weight ratios: 24-26 parts charcoal, 14-16 parts strontium carbonate, 9-11 parts starch, and 19-21 parts rice husks. The powders of each component are mixed evenly using general methods and then granulated to obtain the explosive. The propellant is composed of the following components in the indicated weight ratios: 9-11 parts potassium perchlorate, 4-6 parts strontium nitrate, 14-16 parts sulfur, 19-21 parts magnesium-aluminum alloy, 14-16 parts phenol-formaldehyde resin, 29-31 parts polyvinyl chloride, and 4-6 parts starch. The powdered components are mixed evenly using conventional methods and then granulated to obtain the final product. When the fireworks are set off, the fireworks shell is placed inside the launcher barrel, the ignition fuse is lit, the propellant in the paper cup holder explodes and launches the spherical projectile into the air. The fuse ignited by the propellant ignites the detonating charge after a set delay, which explodes the spherical projectile. At the same time, the detonating charge ignites the effect charge and produces smoke.
2. A firework shell that produces a red smoke effect as described in claim 1, characterized in that, The effective drug is composed of the following components in the indicated weight ratios: 10 parts ammonium perchlorate, 15 parts sulfur, 25 parts magnesium-aluminum alloy, 15 parts polyvinyl chloride, 5 parts sodium oxalate, 5 parts potassium hypochlorite, and 15 parts 1-methylaminoanthraquinone. The explosive is composed of the following components in the indicated weight ratios: 25 parts charcoal, 15 parts strontium carbonate, 10 parts starch, and 20 parts rice husks. The propellant is composed of the following components in the indicated weight ratios: 10 parts potassium perchlorate, 5 parts strontium nitrate, 15 parts sulfur, 20 parts magnesium-aluminum alloy, 15 parts phenol-formaldehyde resin, 30 parts polyvinyl chloride, and 5 parts starch.