Gunpowder-free cold firework eruption device

Abstract

The invention discloses a gunpowder-free cold firework eruption device, which belongs to the technical field of cold firework performance, and comprises a rack, an ignition assembly, a feeding assembly, an injection structure and an air supply device, the input end of the ignition assembly is connected with a discharging port of the feeding assembly, the ignition assembly is used for electromagnetically heating metal powder and inputting the metal powder into the spraying structure, the spraying structure is arranged at the output end of the air supply device, and the air supply device introduces airflow into the spraying structure to spray the ignited metal powder. By arranging the ignition assembly and the ventilation structure, metal powder can be ignited in all directions in an electromagnetic mode, meanwhile, air is blown into the ignition assembly through air pressure of the air supply device, the metal powder can be preliminarily ignited in the ignition assembly, and the situation that the metal powder cannot be fully ignited when entering the injection structure to be erupted is avoided; therefore, the problem that the cold fireworks are poor in ornamental value due to the fact that the cold fireworks eruption device is prone to insufficient combustion during ignition is effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of cold fireworks performance, and specifically refers to a gunpowder-free cold fireworks ejection device. Background Art

[0002] Cold fireworks are a type of cold light and smokeless fireworks made from metal powders with relatively low ignition points and processed in a certain proportion. They are commonly used in stage performances, celebration activities, etc., and can create a colorful visual effect. Cold fireworks ejection devices usually use gunpowder primer for ignition when igniting. The gunpowder is used as an ignition source to ignite the metal powder. However, this ignition method is prone to the situation where the metal powder does not burn fully, which not only reduces the ornamental value of the fireworks but also causes waste of materials.

[0003] Therefore, in order to be able to ignite cold fireworks in a gunpowder-free manner and be able to supply air to the metal powder for auxiliary combustion during ignition to avoid the influence of the ornamental value of the fireworks caused by incomplete combustion of the metal powder, a gunpowder-free cold fireworks ejection device is proposed. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a gunpowder-free cold fireworks ejection device, which effectively solves the problem that the current cold fireworks ejection device uses gunpowder as an ignition source to ignite the metal powder during ignition, which easily causes the metal powder to fail to burn completely during ejection and affects the viewing effect of cold fireworks.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a gunpowder-free cold fireworks ejection device, which includes a frame, an ignition assembly, a feeding component, a spraying structure, and a air supply device;

[0006] The input end of the ignition assembly is connected to the discharge port of the feeding component, and is used for electromagnetic heating of the metal powder and inputting it into the spraying structure. The spraying structure is arranged at the output end of the air supply device, and the air supply device supplies air flow into the spraying structure to spray the ignited metal powder;

[0007] The ignition assembly includes a pushing pipe, a main shaft, and a ventilation structure. The pushing pipe is fixedly installed on the frame. The main shaft rotates on the pushing pipe, and a pushing auger is fixedly connected to the main shaft. The pushing auger is arranged inside the pushing pipe to push the metal powder to move. An electromagnetic heating coil is fixedly installed on the outside of the pushing pipe, and the electromagnetic heating coil heats the metal powder in the pipe to the combustion point. The ventilation structure is fixedly installed and penetrates through the pushing pipe for supplying air into the pipe to assist in igniting the metal powder;

[0008] One end of the spraying structure is provided with an air inlet. The spraying structure is provided with a connecting pipe at the end of the air inlet, and the other end of the connecting pipe is arranged at the input end of the ventilation structure.

[0009] Further, the injection structure includes an injection pipe, which is fixedly installed on the frame. The injection pipe is an L-shaped hollow tubular structure.

[0010] Further, a feed inlet is formed in the injection pipe. The inside of the pusher pipe is communicated with the inside of the injection pipe at the feed inlet. One end of the pushing auger penetrates through the feed inlet and extends into the injection pipe.

[0011] Further, the ventilation structure includes a ventilation pipe. An air inlet is formed at the top of the ventilation pipe. An air vent is provided at the bottom side of the ventilation pipe. A mounting bracket is fixedly connected to the middle of the ventilation pipe.

[0012] Further, the ventilation structure further includes a blocking ball and an anti-backflow ball. A first spring is provided between the blocking ball and the mounting bracket. Under the elastic force of the first spring, the blocking ball closes the air inlet. A second spring is provided between the anti-backflow ball and the mounting bracket. Under the pulling force of the second spring, the anti-backflow ball closes the air vent.

[0013] Further, the feeding assembly includes a storage bin and a rotating shaft. The storage bin is fixedly installed on the frame. The rotating shaft rotates in the storage bin. A collecting hopper is fixedly connected to the bottom of the storage bin. A discharge pipe is fixedly connected to the bottom of the collecting hopper. Stirring blades are fixedly connected to the rotating shaft. The stirring blades are arranged in the collecting hopper. A feeding auger is fixedly connected to the bottom of the rotating shaft. The feeding auger is arranged in the discharge pipe.

[0014] Further, a protection box is fixedly connected to the storage bin. A transmission shaft is rotatably connected in the protection box. A driving bevel gear is fixedly connected to the transmission shaft. A driven bevel gear is fixedly connected to the rotating shaft. The driven bevel gear is meshed with the driving bevel gear.

[0015] Further, a first belt pulley is fixedly connected to the main shaft. A second belt pulley is fixedly connected to the transmission shaft. A belt is installed between the second belt pulley and the first belt pulley.

[0016] Further, an insulating and heat-preserving sleeve is fixedly sleeved on the outer circumference of the pusher pipe. The electromagnetic heating coil is fixedly sleeved on the outer circumference of the insulating and heat-preserving sleeve.

[0017] Further, a driving motor is fixedly installed on the frame. The output end of the driving motor drives the main shaft to rotate.

[0018] The beneficial effects obtained by the present invention with the above structure are as follows:

[0019] (1) In order to solve the problem that the cold fireworks spraying device is prone to insufficient combustion when ignited, resulting in poor ornamental effect of the cold fireworks, the present invention can ignite the metal powder in all directions by electromagnetic means through the setting of the ignition assembly and the ventilation structure. At the same time, the air is blown into the ignition assembly by the air pressure of the air supply device to assist the combustion of the metal powder, thereby effectively improving the combustion degree of the metal powder and the ornamental effect of the cold fireworks;

[0020] (2) Among them, the air inlet end of the ventilation structure is connected to the air inlet of the spraying structure through a connecting pipe. When the air supply device works, the air is introduced into the ignition assembly through the air pressure generated by the air supply device, so that the metal powder can be preliminarily ignited in the ignition assembly, avoiding insufficient ignition when the metal powder enters the spraying structure and erupts, and effectively improving the combustion effect of the metal powder;

[0021] (3) In addition, two one-way air flow ports are provided in the ventilation structure, and the air flow in the direction is closed by a plugging ball and an anti-reverse ball respectively. When the air flows in, the elastic force of the spring weakens the incoming air flow, avoiding excessive combustion of the metal powder before the metal powder erupts due to excessive air introduced from the ventilation structure;

[0022] (4) In the ignition assembly, the metal powder is heated and ignited by means of an electromagnetic coil, which can uniformly heat the metal powder and exceed the ignition point. Then, when the metal powder with a temperature exceeding the ignition point enters the spraying pipe, it can further burn when it contacts sufficient air. The metal powder is heated more uniformly and the combustion effect is better. Brief Description of the Drawings

[0023] Figure 1 It is a three-dimensional structure schematic diagram of a gunpowder-free cold fireworks spraying device proposed by the present invention;

[0024] Figure 2 It is an internal structure schematic diagram of a gunpowder-free cold fireworks spraying device proposed by the present invention;

[0025] Figure 3 It is a structure schematic diagram of the ignition assembly of a gunpowder-free cold fireworks spraying device proposed by the present invention;

[0026] Figure 4 It is a structure schematic diagram of the ventilation structure;

[0027] Figure 5 It is a structure schematic diagram of the feeding component of a gunpowder-free cold fireworks spraying device proposed by the present invention;

[0028] Figure 6 It is an internal structure schematic diagram of the feeding component;

[0029] Figure 7This is a partial structural schematic diagram of a gunpowder-free cold fireworks ejection device proposed by the present invention.

[0030] Among them, 1 is the frame; 2 is the ignition assembly; 3 is the feeding component; 4 is the ejection structure; 5 is the air supply device; 21 is the pushing pipe; 22 is the insulating and heat-preserving sleeve; 23 is the electromagnetic heating coil; 25 is the pushing auger; 26 is the main shaft; 27 is the first belt pulley; 28 is the ventilation structure; 281 is the ventilation pipe; 282 is the air inlet; 283 is the mounting bracket; 284 is the blocking ball; 285 is the first spring; 286 is the ventilation port; 287 is the anti-reverse ball; 288 is the second spring; 31 is the storage bin; 32 is the protection box; 33 is the transmission shaft; 34 is the driving bevel gear; 35 is the rotating shaft; 36 is the driven bevel gear; 37 is the stirring blade; 38 is the blanking auger; 39 is the collecting hopper; 310 is the discharge pipe; 311 is the second belt pulley; 41 is the ejection pipe; 42 is the feed inlet; 44 is the air inlet; 45 is the heat-preserving pipe; 6 is the driving motor; 7 is the connecting pipe.

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] As Figures 1-7 shown, the present invention proposes a gunpowder-free cold fireworks ejection device, including a frame 1, an ignition assembly 2, a feeding component 3, an ejection structure 4, and an air supply device 5;

[0035] The input end of the ignition assembly 2 is connected to the discharge port of the feeding component 3, and is used to electromagnetically heat the metal powder and input it into the ejection structure 4. The ejection structure 4 is arranged at the output end of the air supply device 5, and the air supply device 5 passes air into the ejection structure 4 to eject the ignited metal powder;

[0036] The ignition assembly 2 includes a feeding pipe 21, a main shaft 26 and a ventilation structure 28. The feeding pipe 21 is fixedly installed on the frame 1. The main shaft 26 rotates on the feeding pipe 21. A feeding auger 25 is fixedly connected to the main shaft 26. The feeding auger 25 is arranged inside the feeding pipe 21 to push the metal powder to move. An electromagnetic heating coil 23 is fixedly installed on the outer side of the feeding pipe 21. The electromagnetic heating coil 23 heats the metal powder in the pipe to the combustion point. The ventilation structure 28 is fixedly installed and penetrates through the feeding pipe 21 for introducing air into the pipe to assist in igniting the metal powder.

[0037] The injection structure 4 is provided with a connecting pipe 7 at one end provided with an air inlet 44. The other end of the connecting pipe 7 is arranged at the input end of the ventilation structure 28. When the air supply device 5 supplies air to the injection structure 4, the air flow can enter the ventilation structure 28 through the connecting pipe 7, so as to introduce air into the feeding pipe 21 and initially ignite the metal powder, avoiding insufficient combustion when the metal powder enters the injection structure 4 and erupts.

[0038] Among them, the injection structure 4 includes an injection pipe 41. The injection pipe 41 is fixedly installed on the frame 1. The injection pipe 41 is an L-shaped hollow tubular structure. The top of the vertical part of the injection pipe 41 is an injection port. The output end of the air supply device 5 is connected to the horizontal part of the injection pipe 41.

[0039] In addition, a feed inlet 42 is opened on the injection pipe 41. The feed inlet 42 is arranged on one side of the vertical part of the injection pipe 41. The inside of the feeding pipe 21 is communicated with the inside of the injection pipe 41 at the feed inlet 42. One end of the feeding auger 25 penetrates through the feed inlet 42 and extends into the injection pipe 41.

[0040] Specifically, the ventilation structure 28 includes a ventilation pipe 281. An air inlet 282 is opened at the top of the ventilation pipe 281. An air vent 286 is arranged at the bottom side of the ventilation pipe 281. A mounting bracket 283 is fixedly connected to the middle of the ventilation pipe 281. The ventilation structure 28 further includes a blocking ball 284 and an anti-backflow ball 287. A first spring 285 is arranged between the blocking ball 284 and the mounting bracket 283. Under the elastic force of the first spring 285, the blocking ball 284 closes the air inlet 282, and the elastic force of the first spring 285 can weaken the introduced air flow, avoiding excessive combustion of the metal powder in the ignition assembly 2 due to excessive air introduced from the ventilation structure 28. A second spring 288 is arranged between the anti-backflow ball 287 and the mounting bracket 283. Under the pulling force of the first spring 285, the anti-backflow ball 287 closes the air vent 286, and the anti-backflow ball 287 can prevent the air flow in the feeding pipe 21 from flowing back to the ventilation structure 28.

[0041] In this embodiment, the feeding assembly 3 includes a storage bin 31 and a rotating shaft 35. The storage bin 31 is fixedly installed on the frame 1, and the rotating shaft 35 rotates inside the storage bin 31. A collecting hopper 39 is fixedly connected to the bottom of the storage bin 31. The collecting hopper 39 is a frustum-shaped structure with a pointed end facing downwards, enabling the metal powder raw material to move smoothly downwards. A discharge pipe 310 is fixedly connected to the bottom of the collecting hopper 39. A stirring blade 37 is fixedly connected to the rotating shaft 35. The stirring blade 37 is arranged inside the collecting hopper 39. The stirring blade 37 can stir the metal powder inside the collecting hopper 39 to ensure the smooth feeding of the metal powder. A feeding auger 38 is fixedly connected to the bottom of the rotating shaft 35. The feeding auger 38 is arranged inside the discharge pipe 310.

[0042] A protection box 32 is fixedly connected to the storage bin 31. A transmission shaft 33 is rotatably connected inside the protection box 32. A driving bevel gear 34 is fixedly connected to the transmission shaft 33. A driven bevel gear 36 is fixedly connected to the rotating shaft 35. The driven bevel gear 36 is meshed and connected with the driving bevel gear 34.

[0043] In this embodiment, a first belt pulley 27 is fixedly connected to the main shaft 26. A second belt pulley 311 is fixedly connected to the transmission shaft 33. A belt is installed between the second belt pulley 311 and the first belt pulley 27.

[0044] As a preferred embodiment, an insulating and heat-insulating sleeve 22 is fixedly sleeved on the outer circumference of the pushing pipe 21. An electromagnetic heating coil 23 is fixedly sleeved on the outer circumference of the insulating and heat-insulating sleeve 22. The electromagnetic heating coil 23 heats the metal powder by using the principle of electromagnetic induction. The inner layer of the pushing pipe 21 should be coated with an anti-sticking coating. Specifically, the pushing pipe 21 is made of an insulating non-metallic material, preferably ceramic material. The pushing auger 25 is preferably a ceramic blade.

[0045] Specifically, a driving motor 6 is fixedly installed on the frame 1. The output end of the driving motor 6 drives the main shaft 26 to rotate.

[0046] During specific use, when performing a cold flame spraying performance, first, the metal powder for the cold flame performance is filled into the storage bin 31. When the device is started, the driving motor 6 drives the main shaft 26 to rotate. The main shaft 26 and the transmission shaft 33 rotate together through belt transmission. The transmission shaft 33 drives the rotating shaft 35 to rotate through the meshing of the driving bevel gear 34 and the driven bevel gear 36. The rotating shaft 35 drives the stirring blade 37 and the feeding auger 38 to rotate. The stirring blade 37 stirs the metal powder inside the collecting hopper 39 to ensure the uniform feeding of the metal powder. At the same time, the rotation of the collecting hopper 39 enables the metal powder to enter the inside of the pushing pipe 21.

[0047] Meanwhile, the main shaft 26 drives the feeding auger 25 to rotate, enabling the metal powder to move along the inside of the feeding pipe 21 towards the injection pipe 41. When the metal powder passes through the electromagnetic heating coil 23, the alternating current in the electromagnetic heating coil 23 generates a changing magnetic field. Under the electromagnetic induction effect, the metal powder in the feeding pipe 21 generates high temperature. At the same time, air is introduced into the feeding pipe 21 at the air supply structure 28 to assist in igniting the metal powder. When the metal powder with a temperature exceeding the ignition point enters the injection pipe 41, the outside of the injection pipe 41 is sleeved with a heat preservation pipe 45. Contacting sufficient air, it can further burn and erupt from the top of the injection pipe 41 under the impact of the air flow generated by the air supply device 5.

[0048] When the air supply device 5 introduces air flow into the injection pipe 41, the air pressure in the injection pipe 41 increases, causing a part of the air flow to enter the input port of the air supply structure 28 through the connecting pipe 7. Under the action of the air pressure, the blocking ball 284 compresses the first spring 285, and the anti - reverse ball 287 stretches the second spring 288, opening the air flow channels at the air inlet 282 and the air vent 286, enabling air to enter the inside of the feeding pipe 21 to initially ignite the metal powder and preventing the metal powder from not being fully ignited when burning in the injection structure 4.

[0049] The above is the overall working process of the present invention.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

[0052] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural manners and embodiments without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A powder-free cold flame eruption device, characterized in that: It comprises a frame (1), an ignition assembly (2), a feeding assembly (3), an injection structure (4) and an air supply device (5); The input end of the ignition assembly (2) is connected to the discharge port of the feeding assembly (3) and is used to electromagnetically heat the metal powder and feed it into the injection structure (4). The injection structure (4) is arranged on the output end of the air supply device (5). The air supply device (5) injects air into the injection structure (4) to spray the ignited metal powder. The ignition assembly (2) comprises a push tube (21), a main shaft (26) and a ventilation structure (28), wherein the push tube (21) is fixedly mounted on the frame (1), the main shaft (26) rotates on the push tube (21), a push auger (25) is fixedly connected to the main shaft (26), the push auger (25) is arranged inside the push tube (21) to push the metal powder to move, an electromagnetic heating coil (23) is fixedly mounted on the outside of the push tube (21), the electromagnetic heating coil (23) heats the metal powder in the tube to a combustion point, and the ventilation structure (28) is fixed and runs through the push tube (21) to allow air to be introduced into the tube to assist in ignition of the metal powder; An air inlet (44) is provided at one end of the injection structure (4), a connecting pipe (7) is provided at one end of the air inlet (44), and the other end of the connecting pipe (7) is arranged at the input end of the ventilation structure (28).

2. A powder-free cold flame eruption device according to claim 1, characterized in that: The spraying structure (4) comprises a spraying pipe (41), wherein the spraying pipe (41) is fixedly mounted on the frame (1), and the spraying pipe (41) is an L-shaped hollow tubular structure.

3. A powder-free cold flame eruption device according to claim 2, characterized in that: The injection pipe (41) is provided with a feed port (42), the interior of the push pipe (21) is connected to the interior of the injection pipe (41) at the feed port (42), and one end of the push auger (25) passes through the feed port (42) and extends into the interior of the injection pipe (41).

4. A powder-free cold flame eruption device according to claim 3, characterized in that: The ventilation structure (28) comprises a ventilation pipe (281), the top of the ventilation pipe (281) is provided with an air inlet (282), the bottom side of the ventilation pipe (281) is provided with a ventilation port (286), and the middle part of the ventilation pipe (281) is fixedly connected with a mounting frame (283).

5. A powder-free cold flame eruption device according to claim 4, characterized in that: The ventilation structure (28) also includes a blocking ball (284) and an anti-rebound ball (287). A spring 1 (285) is provided between the blocking ball (284) and the mounting frame (283). Under the elastic force of the spring 1 (285), the blocking ball (284) closes the air inlet (282). A spring 2 (288) is provided between the anti-rebound ball (287) and the mounting frame (283). Under the tensile force of the spring 2 (288), the anti-rebound ball (287) closes the air vent (286).

6. A powder-free cold flame eruption device according to claim 5, characterized in that: The feeding assembly (3) comprises a material storage bin (31) and a rotating shaft (35); the material storage bin (31) is fixedly mounted on the frame (1); the rotating shaft (35) rotates in the material storage bin (31); the bottom of the material storage bin (31) is fixedly connected to a collecting hopper (39); the bottom of the collecting hopper (39) is fixedly connected to a discharge pipe (310); a stirring blade (37) is fixedly connected to the rotating shaft (35); the stirring blade (37) is arranged in the collecting hopper (39); the bottom of the rotating shaft (35) is fixedly connected to a material discharge winch (38); the material discharge winch (38) is arranged in the discharge pipe (310).

7. A powder-free cold flame eruption device according to claim 6, characterized in that: The material storage bin (31) is fixedly connected to a protection box (32), a transmission shaft (33) is rotatably connected inside the protection box (32), a driving bevel gear (34) is fixedly connected to the transmission shaft (33), a driven bevel gear (36) is fixedly connected to the rotating shaft (35), and the driven bevel gear (36) is meshingly connected to the driving bevel gear (34).

8. A powder-free cold flame eruption device according to claim 7, characterized in that: The main shaft (26) is fixedly connected with a pulley 1 (27), the transmission shaft (33) is fixedly connected with a pulley 2 (311), and a belt is installed between the pulley 2 (311) and the pulley 1 (27).

9. A powder-free cold flame eruption device according to claim 8, characterized in that: An insulating heat preservation sleeve (22) is fixedly sleeved on the outer circumference of the pushing tube (21), and the electromagnetic heating coil (23) is fixedly sleeved on the outer circumference of the insulating heat preservation sleeve (22).

10. A powder-free cold flame eruption device according to claim 9, characterized in that: A driving motor (6) is fixedly mounted on the frame (1), and an output end of the driving motor (6) drives the main shaft (26) to rotate.

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