Combustible powder cold light firework effect generating device

Abstract

The combustible powder cold light firework effect generating device comprises a powder storage device and a heating body, and a heating cavity of the heating body is provided with a bent or spiral powder channel; the combustible powder in the powder storage device passes through the powder channel based on wind power to be heated and ignited. When combustible powder flows in a bent or spiral powder channel based on wind power, powder particle flow needs to be subjected to reversing movement, so that the friction coefficient and normal pressure between powder particles and the channel wall are greatly increased, and local high-temperature friction heat is generated. Therefore, the heating body only needs to provide a relatively low heating temperature, the combustible particles can be reliably ignited to be sprayed out under the cooperation of local high-temperature friction heat, and the cold light firework effect formed by the star body effect of combustible powder combustion is achieved.

Description

Technical Field

[0001] The invention relates to a generating device for generating cold light fireworks effect by using combustible powder. Background Art

[0002] Traditional cold light fireworks (cold fireworks) use the burning of gunpowder to excite combustible powders such as metals or metal oxides mixed in it to produce a star effect.

[0003] In the prior art, in order to replace the traditional fireworks ejection formed by gunpowder emission, the industry has developed many devices that simulate the cold light fireworks effect, and the combustible powder is ignited and ejected to form the cold light fireworks ejection effect. Due to its high safety, it has been widely used. In order to realize the ignition and excitation of combustible powder, the prior art can be summarized into the following methods:

[0004] 1. Powder preheating + ignition mode: A cold flame eruption device disclosed in Chinese patent documents such as publication number: CN105241316A, CN105258576A, CN105371707A, CN105854317A, CN107121022A, etc. In this series of patent documents, heating the outer wall of the feed tube is the key factor for powder excitation and ignition to achieve cold flame eruption. Other similar patent documents, such as "a device for emitting and controlling colored cold fireworks - Publication No.: CN106767189A" adopts "heating coil heating"; "a heating element device and stage cold fireworks equipment - Announcement No.: CN216482556U" adopts "a heating module is sheathed on the outer wall of the tube for conveying metal powder"; "a gunpowder-free environmentally friendly fireworks machine - Publication No.: CN109000519A" adopts "the outer surface of the feeding tube is also provided with a heating ring and a heat preservation ring from the inside to the outside". All of them adopt similar powder excitation and ignition methods.

[0005] Second, the arc excitation ignition based on the plasma generator, such as the "multi-flame powder combustion and spraying device" disclosed in the publication number: CN119687731A.

[0006] 3. Combustion and ignition of a pressurized fuel jet based on the Bernoulli principle. For example, CN 221945035U (authorization announcement number) discloses a handheld fireworks device based on powder combustion and eruption; CN 222068500U (authorization announcement number) discloses a fireworks device based on powder combustion and eruption.

[0007] The disadvantage of the existing technology is that in order to ignite and excite metal or metal oxide powders to produce the star effect of cold light fireworks, a relatively high heating temperature is required, which leads to a series of problems: such as high energy consumption of the device, especially high ineffective energy consumption; or there are many necessary components such as igniters, plasma generators, and pressure fuel assemblies, and the structure is relatively complex and difficult to miniaturize; or high energy and flammability make safety lack of guarantee, etc. Summary of the invention

[0008] In order to solve the above-mentioned drawbacks, the technical problem to be solved by the present invention is to provide a device for producing cold light fireworks effects using combustible powder, which can effectively reduce the heating temperature used to excite and ignite the combustible powder.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is a combustible powder cold light fireworks effect generating device, including a powder storage device, characterized in that it also includes a heating body, the heating cavity of the heating body has a curved or spiral powder channel; the combustible powder in the powder storage device is heated and ignited through the powder channel based on wind force.

[0010] The beneficial effect of the present invention is that when the combustible powder flows in a curved or spiral powder channel based on wind force, the powder particle flow needs to reverse direction, which greatly increases the friction coefficient and normal pressure between the powder particles and the channel wall, thereby causing local high-temperature friction heat to be generated. Therefore, the heating body only needs to provide a relatively low heating temperature, and the combustible particles can be reliably ignited and ejected under the coordination of local high-temperature friction heat, presenting a cold light fireworks effect composed of a star effect of the combustible powder burning.

[0011] At the same time, the curved or spiral powder channel is conducive to extending the heating path and heating time of the combustible powder in the same space and optimizing the heating efficiency, thus laying the foundation for the reliable operation of the device under miniaturization.

[0012] Moreover, the combustible powder can be directly heated and ignited, thereby omitting the ignition components necessary in the prior art; no preheating or plasma generator, pressure fuel components, etc. are required, making the device structure relatively simple and also conducive to product miniaturization.

[0013] The heating method of the heating body is selected from one of the following heating methods: resistance heating, induction heating, microwave heating, thermal radiation heating, and thermal conduction heating.

[0014] Preferably, the heating chamber is a tube structure located inside the heating body, and the inner cavity of the tube is a powder channel.

[0015] Preferably, a heating body is arranged around the outer wall of the tube body.

[0016] Preferably, the tube body structure is selected from a spiral tube structure, a circular coil tube structure, an L-shaped tube structure, and a U-shaped coil tube structure.

[0017] Preferably, the heating body is arranged in a box body, and the middle part of the powder channel passes through the box body.

[0018] Preferably, the powder storage device feeds the combustible powder into the powder passage through a screw conveying mechanism.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all the advantages of the preferred solutions described above at the same time.

[0020] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0027] Figure 2 It is a structural diagram of the gravity blanking mechanism.

[0028] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0029] Figure 4 This is a schematic diagram of the overall structure of Example 3.

[0030] Figure 5 It is a structural schematic diagram of another circular coil structure.

[0031] Figure 6 This is a schematic diagram of the structure of Example 4.

[0032] Figure 7 This is a schematic diagram of the structure of Example 5.

[0033] Figure 8 This is a schematic diagram of the structure of Example 6.

[0034] Fig. 9 This is a schematic diagram of the structure of Example 7.

[0035] Fig.10 This is a schematic diagram of the structure of Example 8.

[0036] Fig.11 This is a schematic diagram of the structure of Example 9. DETAILED DESCRIPTION

[0037] Example 1: See attached Figure 1 , reflecting a specific structure of the present invention. The combustible powder cold light fireworks effect generating device comprises a housing 1 of the device, a powder storage device 2, and a heating body 8. In the example, the heating body 8 adopts a resistance heating method consisting of spirally distributed resistance wires.

[0038] The spiral hollow cavity of the spirally distributed resistance wire constitutes the heating cavity. In other embodiments, the heating body 8 can also adopt an electromagnetic heating method formed by an electromagnetic induction coil. The heating cavity of the heating body 8 has a curved powder channel 10:

[0039] In the example, the heating chamber is a tube structure located in the heating body 8, and the inner cavity of the tube is the powder channel 10. The tube structure of the example adopts a U-shaped coil structure. The inner cavity of the tube body of the U-shaped coil is the powder channel 10.

[0040] In the example, the resistance wire constituting the heating body 8 is arranged around the outer wall of the tube body of the U-shaped coil.

[0041] The wind component 7 is connected to the first port of the U-shaped coil to supply air to the powder channel 10 formed by the inner cavity of the U-shaped coil.

[0042] In the example, the powder storage device 2 feeds the combustible powder into the powder channel 10 through the spiral conveying mechanism 3. The spiral conveying mechanism 3 is connected to the discharge port of the powder storage device 2. The motor 4 is connected to the spiral screw of the spiral conveying mechanism 3. When the motor 4 is turned on, the combustible powder in the powder storage device 2 can be transported to the powder channel 10. In other embodiments, the spiral screw of the spiral conveying mechanism 3 can also be driven to rotate manually or in other automatic ways. In other embodiments, a gravity feeding mechanism can also be used, such as Figure 2 As shown, the powder storage device 2 located at a high position is connected to the powder channel 10 through the feeding pipe 20, and the powder falls into the powder channel 10 by its own weight. A silo switch 21 may also be provided. The powder silo of the powder storage device 2 adopts a single silo, multiple silos or multiple powder mixed silos, and also supports the mixed loading of metal powders with different melting points.

[0043] Based on the wind power provided by the wind component 7, the combustible powder in the powder storage device 2 is heated and ignited from the powder channel 10, and then ejected from the second port of the U-shaped coil, the ejection port 9, presenting a cold light fireworks effect composed of a large number of star effects caused by the burning of the combustible powder.

[0044] As for combustible powder, the ignition point of metal particles is as follows: the combustion temperature of 1-100 mesh titanium powder is about 400-700°C, the combustion temperature of 120-400 mesh titanium powder is about 250-500°C; the combustion temperature of 40-100 mesh iron powder is about 600-1000°C, the combustion temperature of 120-400 mesh iron powder is about 400-700°C, the combustion temperature of 500-1000 mesh iron powder is about 280-500°C, and the combustion temperature of nano iron powder is about 250-280°C. The ignition point is proportional to the particle size.

[0045] In the example, when the combustible powder flows in the curved powder channel 10 based on wind force, the powder particle flow needs to undergo two reversing movements, which greatly increases the friction coefficient and normal pressure between the powder particles and the heated inner wall of the U-shaped coil, thereby causing local high-temperature friction heat to be generated. Therefore, the heating body 8 only needs to provide a relatively low heating temperature, such as a resistance heating method that can provide a heating temperature of 1000°C within 2 to 5 seconds. This means that the present invention can provide the heating temperature required for ignition very quickly, and the combustible particles can be reliably ignited by briefly activating the heating body in conjunction with the local high-temperature friction heat.

[0046] At the same time, the curved powder channel 10 formed by the U-shaped coil is conducive to extending the heating path and heating time of the combustible powder in the same space and optimizing the heating efficiency, so that the entire device can be miniaturized.

[0047] Furthermore, the length of the heating path / time of the powder in the powder channel 10 is set according to the ignition point of the combustible powder, or the number of curved or spiral curved portions is set according to the needs, such as Figure 1 The U-shaped coil is formed by two U-shaped connections, that is, it has two curved parts. Other embodiments can also be provided with one curved part or more curved parts according to the actual needs of ignition.

[0048] Furthermore, for each curved portion, the curvature of the curved portion can also be set according to the actual needs of ignition stimulation.

[0049] Therefore, the combustible powder can be directly heated and ignited without the need for additional ignition components.

[0050] On the other hand, the particle size of the combustible powder can also be selected as needed. The particle size, heating temperature, and heating path / time are matched to ensure that the combustible particles are successfully excited at the right time (such as near the ejection port 9). The particle size of the combustible powder is between 10 and 1000 meshes.

[0051] In the example, a heat insulation body 11 is provided around the heating body 8. It has the dual functions of heat preservation and heat insulation, is convenient for installation on a fixed structure, and helps to maintain a constant temperature of the heating body 8. A power module 6 is also provided to supply power to the heating body 8, the wind power equipment 7, and the motor 4; a control module 5 is provided to facilitate remote or local control by a computer, a mobile phone, etc.

[0052] Example 2: See attached Figure 3 , reflecting another specific structure of the present invention. The difference from Example 1 is that the tube structure adopts a spiral tube structure, and the inner cavity of the tube body is a powder channel 10. The heating body 8 is an electric heating plate attached to the outer wall of the spiral tube, so that the spiral tube is a heating cavity of the heating body 8 in the heating body 8. No heat insulation body is set in the example. The rest will not be repeated.

[0053] Example 3: See attached Figure 4 , reflecting another specific structure of the present invention. The difference from Example 1 is that the tube body structure adopts a disc tube structure, and the inner cavity of the tube body is a powder channel 10. Arrows in the figure show the collision and friction between the powder particles and the inner wall of the tube body.

[0054] Figure 5 This reflects another circular coil structure. The rest will not be described in detail.

[0055] Example 4: See attached Figure 6 , reflecting another specific structure of the present invention. The difference from Example 1 is that the tube body structure adopts an L-shaped tube structure, and the inner cavity of the tube body is a powder channel 10. A gravity drop mechanism is adopted. The arrows in the figure show the collision and friction between the powder particles and the inner wall of the tube body. The rest will not be repeated.

[0056] Example 5: See attached Figure 7 , reflecting another specific structure of the present invention. The difference from Example 2 is that the heating body is arranged in the box body 24, which can be inside or outside the inner wall 22, and the middle part of the powder channel 10 passes through the box body 24. The inner cavity of the tube body of the spiral tube structure constitutes the powder channel 10, and the discharge hole 23 of the side wall of the powder channel 10 is connected to the powder storage device 2 to receive the combustible powder, and the fan of the wind power device 7 blows the powder until it is ignited and excited and ejected from the ejection port 9. The box structure is suitable for various heating methods, such as the aforementioned resistance heating, induction heating, and various methods such as microwave heating, thermal radiation heating, and thermal conduction heating. The box body 24 can be closed for thermal insulation.

[0057] Example 6: See attached Figure 8 , reflecting another specific structure of the present invention. The difference from Example 4 is that the housing is a gun-shaped housing 11, and the trigger 26 of the gun is used as the power switch of the heating body 8, the wind power device 7, and the motor 4.

[0058] Example 7: See attached Fig. 9 , reflecting another specific structure of the present invention. The difference from Example 6 is that the tube body structure adopts a disc tube structure, while Example 6 is an L-shaped tube structure.

[0059] Example 8: See attached Fig.10 , reflecting another specific structure of the present invention. The difference from Example 6 is that the tube body structure adopts a U-shaped coil structure.

[0060] Example 9: See attached Fig.11 , reflecting another specific structure of the present invention. The difference from Example 6 is that the housing is a pistol-shaped housing.

[0061] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and describes these embodiments in detail in conjunction with the accompanying drawings in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is only limited by the claims and their full scope and equivalents, and is not limited by the specific embodiments disclosed.

Claims

1. A combustible powder cold light fireworks effect generating device, comprising a powder storage device, characterized in that: It also includes a heating body, wherein a heating chamber of the heating body has a curved or spiral powder channel; the combustible powder in the powder storage device passes through the powder channel based on wind force and is heated and ignited.

2. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: The heating method of the heating body is selected from one of the following heating methods: resistance heating, induction heating, microwave heating, thermal radiation heating, and thermal conduction heating.

3. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: The heating chamber is a tube structure located inside the heating body, and the inner cavity of the tube is a powder channel.

4. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: A heating body is arranged around the outer wall of the tube body.

5. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: The tube structure is selected from a spiral tube structure, a circular coil tube structure, an L-shaped tube structure, and a U-shaped coil tube structure.

6. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: The heating body is arranged in the box body, and the middle part of the powder channel passes through the box body.

7. A combustible powder cold light fireworks effect generating device as claimed in claim 1, characterized in that: The powder storage device feeds combustible powder into the powder channel through a screw conveying mechanism.

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