A cold fireworks machine

Abstract

The present application relates to a kind of cold fireworks machine, it includes: frame and setting in frame blanking mechanism, heating device, feeding mechanism, injection mechanism, driving mechanism and control component;Heating device includes ceramic tube, heating wire and power plug, ceramic tube is sleeved in the outer periphery of feeding mechanism, ceramic tube includes outer peripheral wall, inner peripheral wall and the tube wall thickness part between outer peripheral wall and inner peripheral wall, multiple axial through heating holes are arranged in tube wall thickness part, multiple heating holes are evenly spaced along the circumferential direction of ceramic tube, heating wire is sequentially arranged in multiple heating holes, to be arranged at the periphery of inner peripheral wall.The present application is arranged by multiple axial through heating holes in ceramic tube, and heating wire is sequentially arranged in multiple heating holes, to form the effect that heating wire is evenly arranged in the periphery of inner peripheral wall in large area, not only can improve heating efficiency, and cost can be greatly reduced relative to the mode of heating coil.

Description

Technical Field

[0001] This invention relates to the field of cold fireworks equipment technology, and in particular to a cold fireworks spraying machine. Background Technology

[0002] A cold pyrotechnic generator is a machine used in performance venues such as stages or bars to produce cold pyrotechnics. The cold pyrotechnics produced can replace traditional fireworks effects and are characterized by safety, environmental friendliness, and excellent visual appeal. The cold pyrotechnic generator uses a new type of metal powder without traditional gunpowder. The powder is heated to above its ignition point by electricity, and then wind power is used to propel the ignited metal powder outwards to create the dazzling pyrotechnic effects of traditional fireworks.

[0003] However, in the existing technology, the heating device used in cold flame spraying machines is not designed reasonably, and has problems such as slow heating speed and high cost. Summary of the Invention

[0004] Therefore, the purpose of this invention is to overcome the shortcomings of the prior art and provide a cold flame spraying machine.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A cold flame spraying machine, comprising:

[0007] The frame and the unloading mechanism, heating device, feeding mechanism, spraying mechanism, drive mechanism and control components disposed in the frame;

[0008] The unloading mechanism is used to supply materials to the feeding mechanism;

[0009] The heating device is used to heat the material in the feeding mechanism. The heating device includes a ceramic tube, a heating wire, and a power connector. The ceramic tube is sleeved on the outer periphery of the feeding mechanism. The ceramic tube includes an outer peripheral wall, an inner peripheral wall, and a wall thickness portion located between the outer peripheral wall and the inner peripheral wall. A plurality of axially penetrating heating holes are provided in the wall thickness portion. The plurality of heating holes are evenly spaced along the circumference of the ceramic tube. The heating wire is sequentially inserted into the plurality of heating holes to be arranged on the periphery of the inner peripheral wall. The power connector is electrically connected to both ends of the heating wire through a first connecting wire and a second connecting wire, respectively.

[0010] The spraying mechanism includes a fan and a spray pipe connected to the air outlet of the fan. The feeding mechanism is used to feed the heated material from the side wall of the spray pipe into the spray pipe. The fan is used to spray the heated material out of the spray pipe.

[0011] The drive mechanism is connected to the unloading mechanism and the feeding mechanism;

[0012] The control component is electrically connected to the power connector, the fan, and the drive mechanism.

[0013] In one embodiment, the heating hole is connected to the inner peripheral wall in the radial direction of the ceramic tube.

[0014] In one embodiment, the heating device further includes a thermocouple, the measuring end of which is disposed in the thickness portion of the tube wall, and the signal end of which is electrically connected to the control component.

[0015] In one embodiment, the feeding assembly includes a hopper, a feeding pipe, a feeding screw, and a connecting pipe. The hopper is provided with a feeding port, and the bottom of the hopper is connected to the feeding pipe. The feeding screw is rotatably disposed inside the feeding pipe and is drivenly connected to the driving mechanism. The side wall of the feeding pipe is provided with a feeding port, and the feeding port is connected to the feeding mechanism through the connecting pipe.

[0016] In one embodiment, the feeding mechanism includes a feeding screw and a feeding tube. The feeding screw is rotatably disposed in the feeding tube and is drivenly connected to the driving mechanism. The side wall of the feeding tube is provided with a feed inlet. The connecting tube is connected to the feed inlet. The port of the feeding tube is connected to the side wall of the spraying tube. The ceramic tube is sleeved on the outer periphery of the feeding tube.

[0017] In one embodiment, the driving mechanism includes a drive motor and transmission gears. The transmission gears include a drive gear, a first feeding gear, a second feeding gear, and a discharge gear. The drive gear is located at the output end of the drive motor. The first feeding gear and the second feeding gear are located at the ends of the feeding screw. The discharge gear is located at the ends of the discharge screw. The drive gear meshes with the first feeding gear, and the discharge gear meshes with the second feeding gear.

[0018] In one embodiment, a mounting base plate is fixedly installed inside the frame, one end of the injection pipe is detachably connected to the mounting base plate via a first flange, and the air outlet of the fan is detachably connected to the mounting base plate via a second flange.

[0019] In one embodiment, the heating wire is a nickel-chromium resistance wire.

[0020] In one implementation, the control component employs a microcontroller embedded system.

[0021] In one embodiment, the cold flame spraying machine also includes a power supply unit disposed in the frame, which provides power to the heating device, spraying mechanism, drive mechanism and control components.

[0022] This invention, by setting multiple axially penetrating heating holes in a ceramic tube and sequentially threading heating wires through these holes, creates a uniform, large-area distribution of heating wires on the outer periphery of the inner wall. This not only improves heating efficiency but also significantly reduces costs compared to heating coils. The resulting practical application is excellent and conducive to the widespread use of cold flame sprayers.

[0023] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a frontal view schematic diagram of the cold flame spraying machine in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of the cold flame spraying machine in an embodiment of this application (hidden parts of the structure).

[0026] Figure 3 (This is a schematic diagram of the internal structure of the cold flame spraying machine in the embodiments of this application, showing the hidden part of the structure).

[0027] Figure 4 This is a partial schematic diagram of the drive mechanism of the cold flame spraying machine in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the heating device in the embodiments of this application;

[0029] Figure 6 This is a schematic diagram of the ceramic tube structure in an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the structure of the ceramic tube and heating wire in the embodiments of this application;

[0031] Figure 8 This is a cross-sectional structural diagram of the unloading mechanism, feeding mechanism, heating device, and spray pipe in the embodiments of this application;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Frame; 2. Feeding mechanism; 21. Hopper; 22. Feeding pipe; 221. Feeding port; 23. Feeding screw; 24. Connecting pipe; 3. Heating device; 31. Ceramic tube; 311. Outer peripheral wall; 312. Inner peripheral wall; 313. Tube wall thickness; 3131. Heating hole; 32. Heating wire; 33. Power connector; 331. First connecting wire; 332. Second connecting wire; 34. Thermocouple; 4. Feeding device Mechanism; 41. Feeding screw; 42. Feeding pipe; 421. Inlet; 51. Fan; 52. Injection pipe; 53. First flange; 6. Drive mechanism; 61. Drive motor; 62. Drive gear; 63. First feeding gear; 64. Second feeding gear; 65. Unloading gear; 7. Control components; 73. DMX output port; 74. DMX input port; 75. Battery charging socket; 76. Power switch. Detailed Implementation

[0034] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this invention.

[0036] Please see Figures 1 to 8 The present invention provides a cold flame spraying machine, which includes:

[0037] The frame 1 and the unloading mechanism 2, heating device 3, feeding mechanism 4, spraying mechanism, driving mechanism 6 and control component 7 disposed in the frame 1.

[0038] The feeding mechanism 2 supplies material to the feeding mechanism 4, and the heating device 3 heats the material inside the feeding mechanism 4. The spraying mechanism includes a fan 51 and a spray pipe 52 connected to the outlet of the fan 51. The feeding mechanism 4 feeds the heated material from the side wall of the spray pipe 52 into the spray pipe 52, and the fan 51 sprays the heated material out of the spray pipe 52. The driving mechanism 6 drives the feeding mechanism 2 and the feeding mechanism 4, thereby driving their operation. In this embodiment, the material is conveyed to the feeding mechanism 4 by the feeding mechanism 2, the heating device 3 heats the material inside the feeding mechanism 4, and the feeding mechanism 4 then conveys the material to the spray pipe 52. The heated material is then blown out of the spray pipe 52 by the fan 51, forming a cold flame. It should be noted that the above-mentioned materials include, but are not limited to, metal powders. The heated materials are either in an ignition state or in a molten state. The molten materials are conveyed by the blower 51 and burn by friction with the air, producing brilliant fireworks.

[0039] In the prior art, heating coils are typically used to heat the feeding mechanism 4 to ignite the material inside. However, heating coils are expensive and have low heating efficiency, requiring preheating. To address these technical problems, the heating device 3 provided in this application includes a ceramic tube 31, a heating wire 32, and a power connector 33. The ceramic tube 31 is sleeved on the outer periphery of the feeding mechanism 4. The ceramic tube 31 includes an outer peripheral wall 311, an inner peripheral wall 312, and a wall thickness portion 313 located between the outer peripheral wall 311 and the inner peripheral wall 312. Multiple shafts are provided in the wall thickness portion 313. Multiple heating holes 3131 are evenly spaced along the circumference of the ceramic tube 31. Heating wires 32 are sequentially inserted into the multiple heating holes 3131 to be arranged around the inner peripheral wall 312. The power connector 33 is electrically connected to both ends of the heating wire 32 through the first connecting line 331 and the second connecting line 332, respectively. Thus, the power connector 33 can heat the heating wire 32 after being connected to an external power source. The heating wire 32 continuously heats up in the multiple heating holes 3131, thereby heating the feeding mechanism 4 located in the inner peripheral wall 312 of the ceramic tube 31. This invention, by setting multiple axially penetrating heating holes 3131 in the ceramic tube 31 and sequentially passing the heating wires 32 through the multiple heating holes 3131, creates an effect where the heating wires 32 are uniformly and extensively arranged around the inner peripheral wall 312. This not only improves heating efficiency but also significantly reduces costs compared to heating coils. The resulting practical application effect is excellent and conducive to the promotion and use of cold flame spraying machines.

[0040] The ceramic tube 31 described in this embodiment can serve as an insulator, preventing the heating wire 32 from directly contacting the feeding mechanism 4 and causing the risk of leakage. Its safety is higher than that of the heating coil in the prior art.

[0041] In this embodiment, the control component 7 is electrically connected to the power connector 33, the fan 51, and the drive mechanism 6, thereby controlling the operation of each component. Specifically, the control component 7 adopts a microcontroller embedded system, which has a corresponding chip inside. The microcontroller embedded system is provided with a serial output port and a serial input port. The serial output port is connected to the serial input port of the same model machine through a signal line, and the serial input port is connected to the serial output port of the same model machine through a signal line. This allows data to be transmitted through a single wired controller to control several or even a dozen machines, eliminating the risk of power line overload due to connecting too many machines. The microcontroller embedded system is also provided with a wired control socket that is connected to a wired controller through a line to achieve remote control. The microcontroller embedded system is also provided with a DMX output port 73 that can be connected to the DMX signal input port of other machines through a signal line, making the wiring simpler. The DMX input port 74 is connected to a DMX signal through a signal line, thereby enabling devices such as DMX consoles to control the machine.

[0042] Preferably, the cold flame spraying machine in this embodiment further includes a power supply unit disposed in the frame 1. The power supply unit provides power to the heating device 3, the spraying mechanism, the drive mechanism 6 and the control component 7. The power supply unit is a lithium battery. The microcontroller embedded system is also provided with a battery charging socket 75 for charging the lithium battery. The microcontroller embedded system is also provided with a power switch 76 for controlling the spraying machine, as well as a battery charging indicator light and a battery voltage indicator light.

[0043] Preferably, in this embodiment, the heating hole 3131 is connected to the inner peripheral wall 312 in the directional direction of the ceramic tube 31. Thus, the heat from the heating wire 32 in the heating hole 3131 can be transferred more directly to the feeding mechanism 4 located in the inner peripheral wall 312, further improving the heat dissipation efficiency. Meanwhile, the heating wire 32 will still not come into direct contact with the feeding mechanism 4, ensuring safety.

[0044] Preferably, to facilitate control of the heating temperature of the heating device 3 and improve temperature stability during heating, the heating device 3 in this embodiment further includes a thermocouple 34. The measuring end of the thermocouple 34 is disposed in the tube wall thickness portion 313, and the signal end of the thermocouple 34 is electrically connected to the control component 7. The thermocouple 34 can detect the temperature of the ceramic tube 31 and output relevant electrical signals to the control component 7. The control component 7 can control the power of the heating wire 32 according to the electrical signals.

[0045] In this embodiment, the feeding assembly includes a hopper 21, a feeding pipe 22, a feeding screw 23, and a connecting pipe 24. The hopper 21 has a feeding port, and its bottom is connected to the feeding pipe 22. The feeding screw 23 is rotatably disposed within the feeding pipe 22 and is driven by the driving mechanism 6. The side wall of the feeding pipe 22 has a feeding port 221, which is connected to the feeding mechanism 4 via the connecting pipe 24 to convey materials to the feeding mechanism 4. Materials can be added to the hopper 21 through the feeding port, and the materials can enter the feeding pipe 22 from the bottom of the hopper 21. Based on the required amount of material, the driving mechanism 6 drives the feeding screw 23 to rotate, and the material is moved through the feeding pipe 22 to the feeding port 221 as the screw rotates, and then enters the feeding mechanism 4 through the connecting pipe 24.

[0046] In this embodiment, the feeding mechanism 4 includes a feeding screw 41 and a feeding tube 42. The feeding screw 41 is rotatably disposed in the feeding tube 42 and is driven by the driving mechanism 6. The side wall of the feeding tube 42 is provided with an inlet 421, and the connecting pipe 24 is connected to the inlet 421. The port of the feeding tube 42 is connected to the side wall of the spray pipe 52, and the ceramic tube 31 is sleeved on the outer periphery of the feeding tube 42. The driving mechanism 6 drives the feeding screw 41 to rotate inside the feeding tube 42, so the material is moved forward by the feeding screw 41. At the same time, the heating device 3 continuously heats the feeding tube 42, so the material absorbs heat during the movement, and when the temperature reaches the set temperature, it is sent into the spray pipe 52 for spraying.

[0047] As can be seen from the above, the drive mechanism 6 can drive the unloading mechanism 2 and the feeding mechanism 4 to operate together. There are various possible configurations. Preferably, in this embodiment, the drive mechanism 6 includes a drive motor 61 and transmission gears. The transmission gears include a drive gear 62, a first feeding gear 63, a second feeding gear 64, and an unloading gear 65. The drive gear 62 is located at the output end of the drive motor 61. The first feeding gear 63 and the second feeding gear 64 are located at the ends of the feeding screw 41. The unloading gear 65 is located at the end of the unloading screw 23. The drive gear 62 meshes with the first feeding gear 63, and the unloading gear 65 meshes with the second feeding gear 64. By having the drive motor 61 drive the drive gear 62 to rotate, the first feeding gear 63 is rotated, thereby driving the second feeding gear 64 and the feeding screw 41 to rotate. This, in turn, causes the unloading gear 65 to rotate, driving the unloading screw 23 to rotate. The resulting drive system offers better performance and a simpler structure, allowing the unloading screw 23 and the feeding screw 41 to rotate synchronously. This ensures continuous material transport and heating, resulting in uniform material delivery without accumulation and easier control.

[0048] In this embodiment, the spray pipe 52 includes an upper pipe and a lower pipe that are nested together. The upper and lower pipes are nested together, which has high strength and makes it safer during the spraying process. Of course, in this embodiment of the invention, only one whole spray pipe 52 can be provided.

[0049] Preferably, in this embodiment, a mounting base plate is fixedly installed inside the frame 1. One end of the spray pipe 52 is detachably connected to the mounting base plate via a first flange 53, and the air outlet of the fan 51 is detachably connected to the mounting base plate via a second flange. This arrangement allows for separate replacement of the spray pipe 52 and the fan 51, and the mounting base plate supports the spray pipe 52, preventing it from tilting during spraying.

[0050] Preferably, the heating wire 32 is a nickel-chromium resistance wire, which has higher heating efficiency.

[0051] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A cold flame spraying machine, characterized in that, include: The frame and the unloading mechanism, heating device, feeding mechanism, spraying mechanism, drive mechanism and control components disposed in the frame; The unloading mechanism is used to supply materials to the feeding mechanism; The heating device is used to heat the material in the feeding mechanism. The heating device includes a ceramic tube, a heating wire, and a power connector. The ceramic tube is sleeved on the outer periphery of the feeding mechanism. The ceramic tube includes an outer peripheral wall, an inner peripheral wall, and a wall thickness portion located between the outer peripheral wall and the inner peripheral wall. A plurality of axially penetrating heating holes are provided in the wall thickness portion. The plurality of heating holes are evenly spaced along the circumference of the ceramic tube. The heating wire is sequentially inserted into the plurality of heating holes to be arranged on the periphery of the inner peripheral wall. The power connector is electrically connected to both ends of the heating wire through a first connecting wire and a second connecting wire, respectively. The spraying mechanism includes a fan and a spray pipe connected to the air outlet of the fan. The feeding mechanism is used to feed the heated material from the side wall of the spray pipe into the spray pipe. The fan is used to spray the heated material out of the spray pipe. The drive mechanism is connected to the unloading mechanism and the feeding mechanism; The control component is electrically connected to the power connector, the fan, and the drive mechanism.

2. The cold flame spraying machine according to claim 1, characterized in that: In the radial direction of the ceramic tube, the heating hole communicates with the inner peripheral wall.

3. The cold flame spraying machine according to claim 2, characterized in that: The heating device also includes a thermocouple, the measuring end of which is disposed in the thickness portion of the pipe wall, and the signal end of which is electrically connected to the control component.

4. The cold flame spraying machine according to claim 3, characterized in that: The feeding assembly includes a hopper, a feeding pipe, a feeding screw, and a connecting pipe. The hopper is provided with a feeding port, and the bottom of the hopper is connected to the feeding pipe. The feeding screw is rotatably disposed inside the feeding pipe and is drivenly connected to the driving mechanism. The side wall of the feeding pipe is provided with a feeding port, and the feeding port is connected to the feeding mechanism through the connecting pipe.

5. The cold flame spraying machine according to claim 4, characterized in that: The feeding mechanism includes a feeding screw and a feeding tube. The feeding screw is rotatably disposed in the feeding tube and is driven to the driving mechanism. The side wall of the feeding tube is provided with a feeding port. The connecting tube is connected to the feeding port. The port of the feeding tube is connected to the side wall of the spraying tube. The ceramic tube is sleeved on the outer periphery of the feeding tube.

6. The cold flame spraying machine according to claim 5, characterized in that: The driving mechanism includes a drive motor and transmission gears. The transmission gears include a drive gear, a first feeding gear, a second feeding gear, and a discharge gear. The drive gear is located at the output end of the drive motor. The first feeding gear and the second feeding gear are located at the ends of the feeding screw. The discharge gear is located at the ends of the discharge screw. The drive gear meshes with the first feeding gear, and the discharge gear meshes with the second feeding gear.

7. The cold flame spraying machine according to claim 1, characterized in that: A mounting base plate is fixedly installed inside the frame. One end of the injection pipe is detachably connected to the mounting base plate via a first flange, and the air outlet of the fan is detachably connected to the mounting base plate via a second flange.

8. The cold flame spraying machine according to claim 1, characterized in that: The heating wire is a nickel-chromium resistance wire.

9. The cold flame spraying machine according to claim 1, characterized in that: The control component adopts a single-chip microcomputer embedded system.

10. The cold flame spraying machine according to any one of claims 1-9, characterized in that: It also includes a power supply unit disposed in the frame, which provides power to the heating device, the spraying mechanism, the drive mechanism and the control components.

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