A whole cast environment-friendly firework inner tube structure

The environmentally friendly fireworks inner tube structure, formed by integral casting, uses a mixture of pulp, starch, and inorganic dust, which solves the problems of inconvenient production and fire hazards of fireworks inner tubes, and achieves efficient and environmentally friendly fireworks display effects.

CN224285671UActive Publication Date: 2026-05-26FUJIAN HEXIN MACHINERY CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN HEXIN MACHINERY CO LTD
Filing Date
2025-05-16
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing structure of fireworks inner tubes has problems such as inconvenience in production, fragility, environmental pollution, and fire hazards.

Method used

The environmentally friendly fireworks inner tube is made by mixing pulp, starch and inorganic dust, and then casting it as a whole using a hot press mold. It has a simple structure, with an effect powder chamber at the top, an ignition powder chamber at the bottom, and a connecting channel in the middle. The ignition head is designed as an inverted conical trapezoid, replacing the traditional fuse connection.

Benefits of technology

It achieves high-efficiency production, environmental protection and no pollution, good combustion effect, avoids fire hazards, and is easy to operate and adaptable to all-weather production.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224285671U_ABST
    Figure CN224285671U_ABST
Patent Text Reader

Abstract

This utility model discloses an integrally cast environmentally friendly fireworks inner tube structure, which is made by uniformly mixing pulp, starch, and inorganic dust, and then integrally pressure casting using a hot-pressing mold. It includes an inner tube body, an effect powder chamber, and an ignition powder chamber. A bottom sealing layer is provided between the effect powder chamber and the ignition powder chamber, and a connecting channel is provided in the middle of the bottom sealing layer, connecting the effect powder chamber and the ignition powder chamber. Above the connecting channel is an upper ignition chamber with an inverted conical structure, and below the connecting channel is a lower ignition chamber with a conical structure. The conical heads of the two chambers are connected. The outer side of the lower ignition chamber is equipped with an ignition head with a downwardly protruding inverted conical trapezoidal platform. This utility model provides an integrally cast environmentally friendly fireworks inner tube structure, which is simple in structure, easy to operate, can be integrally cast, mass-produced, has good fireworks display effects, is environmentally friendly and pollution-free, does not pose a fire hazard, and is a time-saving and labor-saving integrally cast environmentally friendly fireworks inner tube.
Need to check novelty before this filing date? Find Prior Art