A material tray for drying fireworks bright beads

Abstract

The invention discloses a material disc for firework bright bead drying. A plurality of gaps are evenly distributed at the bottom of a disc body, and the width of the gaps is smaller than the grain size of firework bright beads. A buffer rod is correspondingly arranged below each gap, and a dust collecting box is arranged below the buffer rods. The side face of an interlayer between the disc body and the dust collecting box is of an all-around ventilation structure. Flowing of dust along with wind can be effectively restrained; and meanwhile, hot air channels at the bottom of the disc body are evenly distributed, no air flowing dead corner exists, hot air is distributed evenly and circulates smoothly, and a good ventilating and drying effect is achieved.

Description

technical field [0001] The invention relates to a drying appliance. In particular, it is a material tray used for drying fireworks bright beads. Background technique [0002] Firework bright beads are made of powdery pyrotechnic drug materials through granulation. In the process of gradual drying, the peeling phenomenon of tiny material particles on the surface of bright beads is unavoidable. In the drying room, the pyrotechnic drug dust formed by these material particles With the circulation of dry hot air, deposits accumulate in the air duct of the drying room, forming a serious safety hazard. The existing material trays used for drying fireworks bright beads are mostly grid-like structures to facilitate air circulation, and it is difficult to avoid the circulation of pyrotechnic drug dust in the air. In practice, paper is placed on the bottom of the material tray to curb the dust. The phenomenon of wind flow. However, this method also inhibits the flow of air at the sa...

AI Technical Summary

Problems solved by technology

However, this method also inhibits the flow of air at the same time. Due to poor ventilation, the ventilation conditions of the bright beads in different parts of the material tray are different, and the heat dissipation speed of the material surface is uneven. On the one hand, it leads to uneven drying rate; The water removal rate of the bright beads from the surface of the material is greater than the rate at which the water diffuses from the interior of the material to the surface of the material, making the surface of the material hard and crusty, hindering the continued migration and diffusion of moisture inside the material

It not only drags down the drying efficiency of the whole batch of bright beads, but also leads to uneven quality of the same batch of bright beads, which seriously affects the discharge effect

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