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A cold pyrotechnic eruption device

A technology of fireworks and equipment, applied in the field of equipment for the eruption of cold fireworks, can solve the problems of large pressure loss of centrifugal fans, inability to achieve upward eruption, and large occupied volume, so as to improve efficiency, optimize acceleration effect, and reduce occupied space. Effect

Active Publication Date: 2021-01-05
HUNAN BEYOND FIRE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The problem to be solved by the present invention is to provide a cold pyrotechnic eruption device for the problems that the existing cold pyrotechnic eruption equipment has a large volume, cannot realize upward eruption and the centrifugal fan of the acceleration device has a large pressure loss and occupies a large volume.

Method used

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  • A cold pyrotechnic eruption device
  • A cold pyrotechnic eruption device
  • A cold pyrotechnic eruption device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Such as Figure 14 As shown, in this embodiment, the centrifugal fan further includes a second rotating shaft mounted on the fan casing, and a second impeller 12 mounted on the second rotating shaft and located in the fan casing. Preferably, the second impeller 12 is located on the other side of the center line 1 of the second airflow channel 52 . A third airflow channel 53 is formed between the outer periphery of the second impeller 12 and the fan casing. The second rotating shaft is installed on the fan housing. Preferably, the second rotating shaft is installed on the bottom plate 200 of the fan casing. The second impeller 12 rotates to drive the airflow entering the fan housing from the second air inlet 2 to move toward the air outlet 3 . Preferably, the second rotating shaft of the first driving motor 4 is inserted into the fan housing from the bottom plate 200 of the fan housing, and the second impeller 12 is fixedly arranged on the second rotating shaft. The ...

Embodiment 2

[0100] Such as Figure 15 As shown, the difference between this embodiment and Embodiment 1 is that the first impeller 11 and the second impeller 12 are arranged in a staggered manner. Preferably, the first impeller 11 and the second impeller 12 are staggered on both sides of the axis l.

[0101] In this implementation, since the first impeller 11 and the second impeller 12 are staggered, the ignited cold pyrotechnic material that enters the second airflow passage (52) from the second air inlet 2 first passes through the first airflow passage (51) Driven by the airflow to move toward the air outlet 3, and then moved to the air outlet 3 under the drive of the airflow in the third airflow channel (53), so as to realize the replacement of the ignited cold pyrotechnic material entering from the second air inlet 2 Good acceleration effect.

Embodiment 3

[0103] Such as Figure 13 As shown, in this embodiment, the included angle between the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 can be set to 90°. This method is suitable for materials that need to be accelerated in the horizontal direction. For example, the axial direction of the air outlet 3 may be set in the vertical direction, and the axial direction of the second air inlet 2 may be set in the horizontal direction. The ignited cold pyrotechnic raw material (spark) enters the fan casing of the centrifugal fan 10 from the horizontal direction, the first impeller 11 rotates, and the flow of gas in the first air flow channel 51 drives the ignited cold pyrotechnic raw material to move toward the air outlet 3, Realize the acceleration process, thereby spray out from the air outlet 3, form the effect of cold pyrotechnic discharge.

[0104] The power unit 30, the second drive motor 6, and the storage unit 40 can be set with reference ...

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Abstract

The invention provides cold firework eruption equipment. The equipment comprises a centrifugal fan and an igniting unit for igniting cold fireworks; the centrifugal fan comprises a fan casing, a firstimpeller arranged inside the fan casing and a first driving motor for driving the first impeller to rotate; a first air flow channel is arranged on the periphery of the first impeller; an air outletand a first air inlet are formed in the fan casing; the centrifugal fan further comprises a second air inlet; the second air inlet is formed in the fan casing and communicates with the first air flowchannel; the sectional area of the second air inlet is not smaller than that of the first air inlet; the first impeller rotates so as to drive an air flow entering the fan casing via the second air inlet to move towards the air outlet; and an outlet of the igniting unit is connected with the second air inlet. According to the equipment, the efficiency of the fan in an accelerator is increased, thepressure loss of the fan is reduced, and the space occupied by the fan is reduced, so that the size of the whole cold firework eruption equipment is reduced. By the aid of the equipment, the effect of downward eruption of the fireworks can be realized, and the equipment is simple in structure and easy to realize.

Description

technical field [0001] The invention belongs to the technical field of pyrotechnics, in particular to equipment for cold pyrotechnic eruption. Background technique [0002] Fireworks are a traditional invention of our country, often used in stage performances, celebrations, and venues. Since fireworks are traditionally set off by gunpowder, relatively strong smoke and gas with pungent odor are produced during the setting off, which is easy to pollute the environment and also has potential safety hazards. In recent years, the country has put forward new requirements for the environmental protection and safety performance of products. Therefore, there is an urgent need to increase its safety, and the replacement of traditional gunpowder eruption by firework eruption equipment without gunpowder has become an inevitable trend and has come into people's field of vision. [0003] For example, patent application 200620089199.0 discloses a device that can make stage cold fireworks...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63J5/02
CPCA63J5/023
Inventor 汤国旋周孝文汤国凯邓大树贺江龙蔡买爽
Owner HUNAN BEYOND FIRE TECH CO LTD