An automatic feeding firework stick

Abstract

An automatic feeding firework stick comprises a handle, an air tank, an air outlet mechanism and an ignition mechanism; a firework tube comprises an inner tube and a cover arranged outside the inner tube, a filling cavity for loading combustible metal powder is formed between the cover and the inner tube, the lower end of the inner tube is arranged in communication with the air outlet mechanism, the upper end of the inner tube is arranged as a nozzle, the ignition end of the ignition mechanism is arranged below the nozzle, the lower end of the inner tube extends to the bottom of the filling cavity on one side to form a feeding seat, a feeding port is arranged on the feeding seat and located below the filling cavity, a feeding screw is arranged in the filling cavity, the bottom of the feeding screw is arranged at the feeding port, and the feeding screw can be controlled to switch between a first state of stopping conveying the combustible metal powder and a second state of conveying the combustible metal powder into the inner tube. The feeding port is directly arranged at the bottom of the filling cavity, and the feeding screw is used for automatic output, so that the firework stick does not need to be manually shaken during use, and a splendid firework effect can be realized.

Description

Technical Field

[0001] This utility model relates to the field of ignition technology, specifically to an automatic feeding firework stick. Background Technology

[0002] Traditional fireworks, made with gunpowder, explode when ignited, bursting through the paper tube to create sound, smoke, and a fiery red carpet. The ignition point of the gunpowder in these fireworks ranges from 800 to 1200 degrees Celsius, posing a significant risk of burns and requiring a fire-resistant environment to prevent ignition. Fireworks also produce large amounts of dense smoke, causing severe environmental pollution. Furthermore, the manufacturing, processing, and transportation processes can pose dangerous risks. In response, a new alternative, cold fireworks, has been introduced to the market. These are made from metal powder with a lower ignition point, ranging from 60 to 80 degrees Celsius.

[0003] Conventional methods require manual shaking to feed metal powder into the nozzle, and prolonged shaking can easily lead to fatigue. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic feeding firework stick.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatically fed firework stick, comprising: The handle has a built-in gas box, gas outlet mechanism, and ignition mechanism. A firework tube, located at the upper end of the handle, includes an inner tube extending vertically and a cover disposed outside the inner tube. A filling cavity for loading combustible metal powder is formed between the cover and the inner tube. The lower end of the inner tube is connected to a gas outlet mechanism, and its upper end is configured as a nozzle. The ignition end of the ignition mechanism is located below the nozzle. The lower end of the inner tube extends towards the bottom of the packing cavity to form a feed seat. The feed seat is provided with feed inlets that connect the packing cavity and the inner tube respectively, and the feed inlets are located below the packing cavity. A feeding screw is provided inside the packing cavity, and the bottom of the feeding screw is placed at the feed inlet. The feeding screw can be controlled to switch between a first state of stopping the feeding of combustible metal powder and a second state of feeding combustible metal powder into the inner tube.

[0006] The outer side of the inner tube is provided with a mounting bracket for placing the electrical control system, which is used for switching the state of the feeding screw.

[0007] The electrical control system includes a control board and a motor, and the motor and the feeding screw are linked together by a gear set.

[0008] The upper end of the firework tube is equipped with an openable end cap.

[0009] A metal impeller is provided below the nozzle, and the ignition end of the ignition mechanism is located close to the metal impeller.

[0010] The handle surface is provided with a button, one end of which is hinged to the upper end of the air box. The air box is also provided with a piezoelectric element. A pressure rod is rotatably provided at the upper end of the air box. One end of the pressure rod abuts against the piezoelectric element, and the other end is located near the button. It can be rotated relative to the button and press the piezoelectric element.

[0011] The handle surface is also provided with a ignition control slider, which can move along the handle surface and restricts button operation after movement.

[0012] The ignition switch is provided with a buckle on the rear side. Any one of the buckles extends inward to form a limiting block, and the upper end of the button extends upward to form a protrusion that matches the limiting block.

[0013] The thickness of the protrusion is less than the gap between the limiting block and the firing slider.

[0014] The beneficial effects of this utility model are: the feed inlet is directly set at the bottom of the filling chamber, and the feed screw is used for automatic output. When in use, there is no need to manually shake the firework stick to achieve a wonderful firework effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the inner tube structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the handle of this utility model.

[0019] Figure 5 This is a schematic diagram of the internal structure of the handle of this utility model (from another angle).

[0020] Figure 6 This is a partially enlarged schematic diagram of the upper part of the gas box of this utility model.

[0021] Figure 7 This is a cross-sectional view of the ignition control slide of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0024] like Figure 1 and Figure 2 As shown, an automatically feeding firework stick includes a handle, a firework tube, and a screw cap arranged coaxially. Both the handle and the firework tube are cylindrical. The handle 100 serves as the handheld position and is made of insulating material, such as plastic, while the firework tube can be made of metal. The handle and firework tube are snapped together or directly connected by screws. The handle includes a gas box and a shell. A support arm is provided at the upper end of the gas box, and the firework tube is directly screwed to the support arm. The shell is fitted over the gas box and has a rear cover at its bottom, achieving a secure connection between the three components and simplifying installation. Multiple mounting positions are machined at the upper end of the gas box for installing a gas outlet mechanism and an ignition mechanism. The ignition mechanism uses a piezoelectric generator. When the discharge end (i.e., the ignition end) of the piezoelectric generator is pressurized, it generates an electric spark, which ignites the combustible gas discharged by the gas outlet mechanism.

[0025] Handle 100, with built-in gas box 700, gas outlet mechanism 800 and ignition mechanism; Firework tube 200 is located at the upper end of the handle 100. It includes an inner tube 210 that runs vertically through the inner tube 210 and a cover 220 located outside the inner tube 210. A filling cavity 230 for filling combustible metal powder is formed between the cover 220 and the inner tube 210. The lower end of the inner tube 210 is connected to the gas outlet mechanism 800, and its upper end is set as a nozzle 211. The inner tube and the cover can be separate structures or integrated structures.

[0026] The ignition end of the ignition mechanism is located below the nozzle 211. The lower end of the inner tube 210 extends towards the bottom of the filling cavity 230 to form a feed seat 214. The feed seat 214 has feed inlets that connect the filling cavity 230 and the inner tube 210 respectively, and the feed inlets are located below the filling cavity 230. A feeding screw 300 is provided inside the filling cavity, and the bottom of the feeding screw 300 is placed at the feed inlet. The feeding screw 300 can be controlled to switch between a first state of stopping the feeding of combustible metal powder and a second state of feeding combustible metal powder into the inner tube. Placing the feed inlet at the bottom reduces the energy consumption of the power source driving the feeding screw, while making the feeding smoother and ensuring the continuous ignition of the fireworks.

[0027] The inner tube is longer than the chamber, and the bottom of the chamber is sloped or conical, tilting towards the outlet to facilitate the discharge of combustible metal powder from the outlet. The powder is then carried upwards along the inner tube by combustible gas, which impacts the metal impeller, creating a dispersion effect. This ignites the powder, simultaneously setting it ablaze and igniting the metal powder discharged with it, thus creating a fireworks effect. The combustible powder is titanium powder or zirconium powder.

[0028] The outer side of the inner tube is provided with a mounting bracket 213 for housing the electronic control system 400, which is used for switching the state of the feeding screw. The electronic control system is mainly used to control the rotation of the feeding screw, thereby enabling it to automatically feed combustible metal powder into the inner tube.

[0029] The electrical control system includes a control board 410 and a motor 420. The motor and the feeding screw are linked together by a gear set. A button is set on the control board and is electrically connected to the motor. When the button is triggered, the control board controls the motor to move. The motor drives the feeding screw to rotate relative to the motor through the gear set. Compared with manual shaking to convey combustible metal powder, the automatic method is easier and less labor-intensive.

[0030] The upper end of the firework tube 200 is provided with an openable end cap. The end cap is designed to be opened for the addition of metal powder. The end cap can be configured to fit the firework tube with any of the following: interference fit, threaded fit, or circumferential rotation to form a snap-fit ​​fit.

[0031] Since the exhaust mechanism discharges atomized gas, which needs to be dispersed before it can be ignited by piezoelectric electrons, a metal impeller 212 is provided below the nozzle. The ignition end of the ignition mechanism is in contact with the metal impeller 212. The blades disperse the atomized gas, while the discharge line of the piezoelectric electrons is close to the metal impeller but does not contact it. It will ignite the gas and produce an open flame.

[0032] The ignition end of the ignition mechanism is located below the nozzle. In this embodiment, the discharge wire of the piezoelectric electron is extended to the bottom of the nozzle through the inner tube. In order to avoid the discharge wire from contacting the inner tube wall, it is preferable to use a coil spring to center the discharge wire. Since the electric spark generated by the discharge wire is upward, it will only ignite the gas located above the discharge wire and will not affect the discharge wire inside the inner tube.

[0033] like Figure 1 and Figure 6 As shown, the handle 100 has a button 500 on its surface. One end of the button 500 is hinged to the upper end of the air box 700. The air box 700 also has a piezoelectric element 710. A pressure rod 720 is rotatably provided on the upper end of the air box 700. One end of the pressure rod 720 presses against the piezoelectric element 710, and the other end is located near the button 500. It can be rotated relative to the button 500 and press the piezoelectric element 710.

[0034] The button is hinged at the bottom, forming a push-button structure. Pressing the button causes its upper part to rotate relative to the hinge point, which in turn rotates the pressure rod that abuts against it. This causes the pressure rod to press the electron-pumping end against the electron, achieving discharge ignition. The pressure rod is centrally hinged to the upper end of the gas chamber and is preferably fixed by a bracket, allowing it to rotate relative to the button. To increase the contact area between the pressure rod and the button, one end of the pressure rod extends in the width direction to form a linkage rod, such as... Figure 7 As shown, this allows it to be better driven by the button.

[0035] like Figure 1 and Figure 5 As shown, the handle 100 surface is also provided with a ignition control slider 600. The ignition control slider 600 can move along the surface of the handle 100, and after moving, it restricts the action of the button 500. In this embodiment, the movement is along the surface of the handle, specifically a lateral movement, which restricts the action of the button. This restriction can restrict button pressing or button reset, thus serving as a safety lock and ignition control switch.

[0036] The ignition switch 600 has a latch on its rear side, with any one of the latches extending inward to form a limiting block 610. The upper end of the button 500 extends upward to form a protrusion 510 that matches the limiting block 610. The thickness of the protrusion 510 is less than the gap between the limiting block 610 and the ignition switch 600. When used as a safety lock, in the button reset state, moving the ignition switch causes it to move accordingly, and the protrusion engages in the gap, thus restricting the button from being pressed. When used as an ignition switch, after pressing the button, sliding the ignition switch utilizes the outer side of the limiting block and the protrusion to form a limiting engagement, thus restricting the button from resetting and maintaining the ignition state. In this case, the sleeve can also be opened to allow for long-term use of the sparkler without constantly pressing the button, making it more labor-saving.

[0037] like Figure 7 As shown, the handle has a certain space inside, which allows the ignition slider to move laterally. By adjusting the positional relationship between the ignition slider and the button, different states can be achieved. At the same time, when it moves to the initial position, it will not affect the operation of the button.

[0038] like Figure 4 As shown, the handle is also provided with a rotating ring 900. The ring adjusts the air output of the air valve through the inner ring linked with it. The inner ring has an internal thread, and the outer side of the air valve has an external thread. The two are threaded together, thereby realizing the adjustment of the air output of the air valve.

[0039] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. An automatic feeding firework stick, characterized by: It includes: Handle (100), with built-in gas box (700), gas outlet mechanism (800) and ignition mechanism; A firework tube (200) is disposed at the upper end of the handle (100). It includes an inner tube (210) that runs vertically through the inner tube and a cover (220) disposed outside the inner tube (210). A filling cavity (230) for filling combustible metal powder is formed between the cover (220) and the inner tube (210). The lower end of the inner tube (210) is connected to the gas outlet mechanism (800), and its upper end is configured as a nozzle (211). The ignition end of the ignition mechanism is located below the nozzle (211). The lower end of the inner tube (210) extends toward the bottom of the packing cavity (230) to form a feed seat (214). The feed seat (214) is provided with feed inlets that connect the packing cavity (230) and the inner tube (210) respectively, and the feed inlets are located below the packing cavity (230). The packing cavity is provided with a feeding screw (300). The bottom of the feeding screw (300) is placed at the feed inlet. The feeding screw (300) can be controlled to switch between a first state of stopping the conveying of combustible metal powder and a second state of conveying combustible metal powder into the inner tube.

2. The automatic feeding firework stick according to claim 1, wherein: The outer side of the inner tube is provided with a mounting bracket (213) for placing the electrical control system (400), which is used for switching the state of the feeding screw.

3. The self-feeding firework stick according to claim 2, characterized in that: The electrical control system includes a control board (410) and a motor (420), wherein the motor and the feeding screw are linked together by a gear set.

4. The firework stick with automatic feeding according to claim 1, characterized in that: The upper end of the firework tube (200) is provided with an openable end cap.

5. The firework stick with automatic feeding according to claim 1, characterized in that: A metal impeller (212) is provided below the nozzle, and the ignition end of the ignition mechanism is located near the metal impeller (212).

6. The firework stick with automatic feeding according to claim 1, characterized in that: The handle (100) has a button (500) on its surface. One end of the button (500) is hinged to the upper end of the air box (700). The air box (700) also has a piezoelectric element (710). A pressure rod (720) is rotatably provided on the upper end of the air box (700). One end of the pressure rod (720) presses against the piezoelectric element (710), and the other end is set close to the button (500). It can be rotated relative to the button (500) and press the piezoelectric element (710).

7. The firework stick with automatic feeding according to claim 6, characterized in that: The handle (100) surface is also provided with a ignition switch (600), which can move along the surface of the handle (100) and restricts the action of the button (500) after movement.

8. The firework stick with automatic feeding according to claim 7, characterized in that: The ignition switch (600) has a buckle on its rear side. Any one of the buckles extends inward to form a limiting block (610). The upper end of the button (500) extends upward to form a protrusion (510) that matches the limiting block (610).

9. The firework stick with automatic feeding according to claim 8, characterized in that: The thickness of the protrusion (510) is less than the gap between the limiting block (610) and the firing slider (600).

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