Looking for a way to increase your fireworks particles (fireworks produce smoke) production efficiency and improve quality? Look no further than an automatic production line! Our state-of-the-art design integrates the key processes of weighing, mixing, granulation, plate loading, drying, and unloading. Here are some benefits you can expect:
- Say goodbye to labor-intensive work! Our automatic production line reduces the need for human labor and allows for greater consistency in the production process.
- With high-quality ingredients and precise measurements, our production line guarantees the quality of your fireworks consist particles.
- You can increase your production output with ease. The automated processes allow for greater efficiency and faster turnaround times.
Don’t let high-risk processes and artificial participation slow you down. Let our professional fireworks particles automatic production line revolutionize the way you produce high-quality fireworks particles.
A fireworks particles (fireworks display) automatic production line is designed for the main processes of high quality, artificial participation, and high risk in the process of manufacture of fireworks particles in fireworks industry. The production line integrates the weighing and mixing of powder ingredients, granulation, plate loading, drying, unloading, etc., which realizes the automatic production of fireworks particles, improves the production efficiency of fireworks particles, and reduces the participation of labor. The labor force is liberated, and the quality of fireworks particles is guaranteed.
Keywords: fireworks; particles; process; automated production.
Fireworks production mainly includes weighing and mixing ingredients, making pellets, drying and packing pellets, producing shells, installing fuses and pellets, and packaging processes [1-2]. This is called today’s commercial aerial display. As the main component of pellets is gunpowder, which is highly flammable and explosive, phenomena such as compression, friction, temperature rise, or sparks during the production of fireworks pellets (like aluminum powder) can cause serious accidents [3-4]. Especially for processes involving manual labor, such as weighing, mixing, granulating, plate-loading, stacking, drying, and unloading of powder ingredients, the production efficiency is low, and the quality of pellets (smoke balls) is difficult to guarantee. Workers have direct contact with gunpowder, and there is a great safety risk [5-6]. Therefore, designing an automated production line specifically for fireworks pellets is urgent.
Requirements for the Design of Fireworks Pellet Production Line
The primary requirement (aesthetic and entertainment purposes) for designing a fireworks pellet production line is to ensure safety. The safety of pellets is mainly reflected in two aspects: the manufacturing and usage of pellets and colored flames. In the manufacturing process of pellets, because the primary ingredient is gunpowder, it is necessary to avoid compression and friction on the powder ingredients and formed pellets, control the temperature rise of each process with pyrotechnic devices, the chemicals and avoid fire and sparks to prevent explosions (flash powder).
When most fireworks are launched in sparkling shapes (they make a loud sound), the quality of the pellets directly affects the effect of launching. If the powder ingredients used (consumer use) to make pellets are not uniformly mixed, producing “dud” fireworks is easy.
Based on the safety of manufacturing and using fireworks pellets, the following conditions should be met when designing a production line:
1) Regarding equipment selection, wood, copper, and new materials should be prioritized. 2) Parts in contact with gunpowder should use engineering plastics as much as possible.
3) The use of electrical products should be avoided as much as possible, and if it is inevitable, explosion-proof products should be used. If non-explosion-proof electrical products must be used, they should be wrapped with insulating materials.
4) Good heat dissipation should be ensured, and the temperature in the production workshop should not exceed 80℃.
5) The equipment should have real-time monitoring and detection devices, and the equipment or related mechanisms can be stopped immediately in case of problems.
6) The number of personnel involved in the operation on the production line must be less than 3.
7) While drying the medicine granules, the temperature of the drying chamber must not exceed 60 ℃.
8) Considering low economic costs, efficient production, and small-scale production, a process of treatment with a medicine dosage of about 5 kg is determined.
9) The thickness of the placement of medicine granules in the tray must not exceed the thickness of 2 particles.
10) Due to the need for weighing, mixing, and granulating processes to ensure the mixing effect and the quality of medicine granules, it is currently set at 5 times per hour.
The automatic fireworks production line consists mainly of a weighing and mixing machine, a granulating machine, a plate stacking machine, and a drying and smoke unloading machine. The structure and functions of each part are as follows:
Weighing and Mixing Machine
The structure of the weighing and mixing machine is shown in Figure 1. The total amount of powder ingredients is 5 kg, and each powder ingredient is placed in the hopper according to the proportion.
The stepper motor drives the feeding worm to rotate and feed. The amount of feeding that falls into the tray is weighed by an electronic scale. When the set target is reached, the stepper motor stops feeding, the unloading cylinder moves, the tray tilts, and the powder enters the conical mixer through the guide pipe.
The mixing motor drives the stirring worm to rotate to mix the powder. After the mixing is uniform, the discharge valve opens to complete the discharge. In the design, the ACS101-2K1-1 frequency converter of ABB company is selected to control the stepper motor. The power is 1.1 kW, and the protection against noise level is IP20. The materials of the hopper, tray, and other components in direct contact with the fireworks are engineering plastics.
The structure of the granulating machine is shown in Figure 2. After the powder is mixed uniformly by the weighing and mixing machine, it is sent to the hopper of the granulating machine by a conveyor belt. The powder slides from the hopper into the rotating inclined plate. At the same time, the spraying system starts, and the adhesive is sprayed out through the atomizing nozzle to agglomerate the powder into particles.
After most of the particles reach the target particle size (smaller version), the granulation is completed. The discharge cylinder and the lifting platform pour the finished particles into the remaining material recovery chute. The remaining material recovery chute has a gap of 3 mm, which is uniformly distributed. The particles that reach the target particle size slide along the chute to the conveyor belt.
The particles smaller than the target particle size and the remaining flash powder fall into the black flash powder recovery bin under the remaining material recovery chute as raw materials for secondary granulation. In the design, considering that the fireworks are prone to ignition and explosion under friction and compression, the disc’s surface is treated with copper plating to eliminate the generation of colored sparks and static electricity that fireworks show.
Tray Stacking Machine
The overall schematic diagram of the tray stacking machine is shown in Figure 3.
Conveyor 1 delivers a set of four stacked trays to the supply plate machine, which supplies the four trays individually to Conveyor 2. The particles produced by the previous process are transported by Conveyor Belt into the trays on Conveyor 2, completing the tray-loading process. The stacking machine receives the shelves sent by Conveyor 3 and inserts the four trays provided by Conveyor 2 one by one into the shelves, completing the tray stacking process. After stacking, Conveyor 4 transports the shelves to the drying oven in the next process for drying.
Drying and Discharging Machine
The drying and discharging machine consists of two parts, the drying unit, and the discharging unit, as shown in the overall schematic diagram in Figure 4.
The drying unit receives the shelves conveyed by the stacking machine, which are dried in the first, second, and third drying chambers. The set temperatures for the first, second, and third drying chambers are 45℃, 60℃, and 45℃, respectively, with a set time of 10 minutes. After drying, the shelves are transferred to the discharging unit. The discharging cylinder tilts the shelves to discharge the granules collected in the chamber, and the discharging is completed.
Working process of the fireworks granule production line
The automatic fireworks production line is shown in Figure 5.
The working process is as follows: each powder ingredient required for making fireworks granules is added to the corresponding hopper. The powder ingredients are sent to the weighing mechanism by the feeding mechanism for weighing. After the required proportions are achieved, the feeding mechanism stops, and the weighted powder ingredients are transferred through the guide pipeline to the mixer.
After mixing, the powder enters the granulation disc using the inclined disc granulation method. The slide chute then transfers the granules to the tray the conveyor provides. The trays filled with granules are then transported to the stacking machine that has already been fed with shelves. The stacking machine stacks the trays layer by layer onto the shelves.
After stacking, the shelves are transferred by the conveyor to the drying chambers and are dried in three drying chambers for 10 minutes each. After drying, the shelves with granules are transported to the discharging machine, where the discharging cylinder tilts the shelves to discharge the granules. Once discharging is complete, the shelves are returned to the stacking machine to prepare for the next round of production. It completes one working cycle of processing the fireworks granule production line.
The automatic fireworks granule production line integrates the main processes of producing fireworks granules, thereby changing the current independence of each production process and equipment for fireworks granules. It achieves production automation, not only improving the production efficiency and quality of granules but also reducing the labor intensity of workers, meaning, reducing human involvement, and freeing up labor.
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