Firework inner cylinder and firework set-off equipment

Abstract

The invention discloses a firework inner cylinder. The outer surface of the inner cylinder is provided with at least one ring of annular groove. The invention also discloses firework set-off equipmentcomprising a launching cylinder and the inner cylinder, a gap is formed between the inner surface of the launching cylinder and the outer surface of the inner cylinder. By means of the firework innercylinder and the firework set-off equipment, the firework production process is simplified, the high production efficiency is achieved, the sealing and closing effects are good, safety and reliability are achieved, repeated use can be achieved, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to the technical field of fireworks, in particular to a fireworks inner tube and a fireworks display device. Background technique [0002] The types of fireworks include combined fireworks and fireworks bombs. The launching principle is to ignite the propellant powder in a closed space, and the propellant powder burns to release a large amount of gas, which generates the chamber pressure required for launching and pushes the explosive effect to fly out of the launch tube. Traditional combination fireworks are made by such as figure 1 The shown single-shot fireworks are arranged and combined, and the structure of the single-shot fireworks is as follows: a launch tube 1' and a mud bottom 2', a launch powder 3', and a sealing paper sheet 4 are arranged in sequence from bottom to top inside the launch tube 1'. ’, the inner tube 5’ and the sealing paper 2 6’, the lead wire 7’ is inserted from the outside of the launch tube 1’ into the...

AI Technical Summary

Problems solved by technology

However, traditional combination fireworks generally go through several processes such as tube making, mud bottom pressing, basin installation, paper loading, assembly and packaging, etc., which not only has many processes, but also has low production efficiency, unstable product quality, and poor airtight sealing effect. , and the paper launch tube is easy to be damp and deformed, which affects the airtightness of the launch tube, resulting in the phenomenon of explosion and low explosion, and it is scrapped after one-time use, which increases the cost of discharge, causes waste of ecological resources and environmental pollution, and the traditional combination Fireworks are a monolithic fixed structure, resulting in high storage and transportation costs

Although there is an integral launch tube made of fiberglass, it is difficult to clean up the gunpowder residue after launch, which leads to scrapping after few uses.

At the same time, traditional paper fireworks are ignited by fuses, which have low safety, reliability and convenience, and are limited in use occasions; large-scale discharge occasions generally use disposable electronic ignition devices, but the structure of disposable electronic ignition devices is complex, and one-time Sexual use, causing waste of resources and environmental pollution

Images