阅读说明：本技术 一种花炮 (Fireworks and firecrackers ) 是由 钟兴标 于 2020-12-29 设计创作，主要内容包括：本发明提供了一种花炮,属于礼炮用品技术领域。它解决了现有的花炮视觉效果单一,观赏性不佳的问题。本花炮,包括外筒,所述外筒开设有发射腔,所述发射腔一端开口,另一端具有底面,每个发射腔内设有至少两个内筒,所述内筒上端开口,下端具有底部且底部设有引火孔,所述内筒的下端还具有插接部,各内筒依次层叠,且上方内筒的插接部与下方内筒的上端相插接,当上方的内筒下方内筒中的火药引爆冲击力作用时能够与下方的内筒分离。本花炮每发射一发烟花,能够在空中绽放出多发的效果,而且是在不同的时间、轨迹位置绽放,同时还能发生多次引爆声,极大的提高了视觉和听觉的双重冲击效果,观赏性更佳。(The invention provides a fireworks and firecrackers, and belongs to the technical field of salute articles. The firework solves the problems that the existing fireworks have single visual effect and poor ornamental performance. This fireworks and firecrackers, including the urceolus, the transmission chamber has been seted up to the urceolus, transmission chamber one end opening, the other end have the bottom surface, are equipped with two at least inner tubes in every transmission intracavity, inner tube upper end opening, lower extreme have the bottom and the bottom is equipped with the ignition hole, the lower extreme of inner tube still has grafting portion, and each inner tube stacks gradually, and the grafting portion of top inner tube pegs graft mutually with the upper end of below inner tube, can separate with the inner tube of below when the gunpowder detonation impulse effect in the inner tube below of top is used. Every fireworks of this fireworks launch, can bloom in the air and send out many effect, is in time, the orbit position of difference bloom moreover, can also take place many times and lead to the explosion sound simultaneously, very big improvement the dual impact effect of vision and sense of hearing, the sight is better.)

1. The utility model provides a fireworks, includes urceolus (1), transmission chamber (1a) has been seted up in urceolus (1), transmission chamber (1a) one end opening, the other end have the bottom surface, its characterized in that is equipped with two at least inner tubes (2) in every transmission chamber (1a), inner tube (2) upper end opening, lower extreme have the bottom and the bottom is equipped with ignition hole (2c), the lower extreme of inner tube (2) still has grafting portion (2a), and each inner tube (2) are range upon range of in proper order and the grafting portion of top inner tube (2) pegs graft mutually with the upper end of below inner tube (2), can separate with below inner tube (2) when inner tube (2) of top receive the powder in below inner tube (2) to explode the impulsive force effect.

2. The fireworks according to claim 1, characterized in that, in every two adjacent inner cylinders (2), the bottom of the upper inner cylinder (2) protrudes downward to form the above-mentioned plugging portion (2a), the ignition hole (2c) is opened on the plugging portion (2a), and the plugging portion (2a) of the upper inner cylinder (2) is inserted into the upper end opening of the lower inner cylinder (2) and is tightly fitted with the inner wall of the lower inner cylinder (2).

3. The firework as claimed in claim 1, wherein, in every two adjacent inner cylinders (2), the bottom of the upper inner cylinder (2) protrudes downward to form the plugging portion (2a), the ignition hole (2c) is formed in the plugging portion (2a), the outer peripheral wall of the plugging portion (2a) is provided with a plurality of clamping convex strips (4) protruding outward, the plurality of clamping convex strips (4) are distributed along the circumferential direction of the plugging portion (2a), and the plugging portion (2a) of the upper inner cylinder (2) is inserted into the upper end opening of the lower inner cylinder (2) and is clamped and positioned with the inner wall of the lower inner cylinder (2) through the clamping convex strips (4).

4. The firework as claimed in claim 1, wherein, in every two adjacent inner cylinders (2), the bottom of the upper inner cylinder (2) protrudes downward to form the plugging portion (2a), the ignition hole (2c) is opened on the plugging portion (2a), the inner peripheral wall of the lower inner cylinder (2) is provided with a plurality of clamping convex strips (4) protruding inward, and the plugging portion (2a) of the upper inner cylinder (2) is inserted into the upper end opening of the lower inner cylinder (2) and is abutted against the clamping convex strips (4) for positioning.

5. The firework as claimed in claim 1, wherein, in every two adjacent inner cylinders (2), the bottom of the upper inner cylinder (2) protrudes downward to form the insertion part (2a), the ignition holes (2c) are formed in the insertion part (2a), the outer peripheral wall of the insertion part (2a) is provided with a plurality of clamping convex strips (4) protruding outward, the plurality of clamping convex strips (4) are distributed along the circumferential direction of the insertion part (2a), the inner peripheral wall of the lower inner cylinder (2) is provided with a plurality of clamping grooves (2b), the insertion part (2a) of the upper inner cylinder (2) is inserted into the upper end opening of the lower inner cylinder (2), and the clamping convex strips (4) are clamped in the corresponding clamping grooves (2 b).

6. The fireworks according to claim 1, characterized in that, in every two adjacent inner cylinders (2), the bottom of the upper inner cylinder (2) protrudes downward to form the above-mentioned plug-in portion (2a), the ignition hole (2c) is opened on the plug-in portion (2a), the plug-in portion (2a) of the upper inner cylinder (2) is inserted into the upper end opening of the lower inner cylinder (2) and is bonded with the lower inner cylinder (2) through glue.

7. A fireworks according to any one of claims 1-6, characterized in that, in every two adjacent inner cylinders (2), the bottom surface of the upper inner cylinder (2) abuts against the upper end opening edge of the lower inner cylinder (2) and is bonded thereto by glue.

8. The firework according to claim 3, 4 or 5, wherein the height of the clamping ribs (4) is 0.05-0.1 mm.

9. The firework according to any one of claims 1 to 6, wherein in every two adjacent inner barrels (2), an isolation gasket (3) is arranged in the lower inner barrel (2), the isolation gasket (3) is positioned between the bottom of the upper inner barrel (2) and the effect powder filled in the lower inner barrel (2), and the isolation gasket (3) is further provided with fire passing holes (3 a).

10. The firework as claimed in claim 1, wherein, in every two adjacent inner cylinders (2), the lower end of the upper inner cylinder (2) is provided with an annular retaining edge protruding downwards from the bottom of the inner cylinder (2), the annular retaining edge forms the inserting part (2c), the outer peripheral wall of the upper end of the lower inner cylinder (2) is provided with an annular concave shoulder formed by inwards sinking, and the annular concave shoulder of the upper end of the lower inner cylinder (2) is inserted into the annular retaining edge of the upper inner cylinder (2) and is tightly matched with the annular retaining edge.

Technical Field

The invention belongs to the technical field of salute products, and relates to a firework.

Background

Fireworks, also known as fireworks, are entertainment products for appreciation by using the effect of sound, light, color and the like of gunpowder generated by burning or explosion, and are widely used in grand ceremonies, performances or festivals.

At present, common fireworks on the market generally comprise an inner cylinder and an outer cylinder, wherein one or more launching cavities are arranged on the outer cylinder, the depth of each launching cavity is greater than the height of the inner cylinder, and one inner cylinder is respectively arranged in each launching cavity.

At present, the common fireworks mainly comprise the following two structures: first, the inner barrel is arranged in the launching cavity of the outer barrel, the two ends of the inner barrel are fixed to the inner barrel by arranging a paper sheet (plate), and the other paper sheet is arranged to form a pressurizing air chamber for placing launching gunpowder. The inner barrel is internally provided with effect gunpowder, and the effect gunpowder is stretched into the inner barrel through a firing line and is used for firing the effect gunpowder, and then the effect gunpowder is packaged through yellow mud (traditional fireworks). Secondly, a supporting bottom plate is arranged at the bottom of the inner cylinder, when the effect gunpowder is arranged in the inner cylinder, the lower end of the effect gunpowder is directly packaged through the supporting bottom plate, the traditional mud seal is reduced, when the inner cylinder is directly and tightly clamped in the outer cylinder, a pressurizing air chamber is formed among the bottom end of the inner cylinder, the hole wall and the bottom surface of the launching cavity, and the pressurizing air chamber is used for filling the gunpowder for launching the inner cylinder, such as a firework disclosed in the Chinese patent application (application number: 201910083092.7).

When the existing fireworks and firecrackers are used, the fire at the bottom of the outer cylinder is ignited, the gunpowder in the pressurization air chamber is ignited, the explosive force generated by the gunpowder acts on the bottom of the inner cylinder, and the inner cylinder rapidly moves towards the opening end of the launching cavity; when gunpowder in the pressurization air chamber is detonated, the ignition powder or the ignition wire in the ignition cavity at the bottom end of the barrel body is ignited, and then the effect gunpowder in the inner barrel is detonated, so that the effects of sound, light, color and the like are given out in the air, and each launching cavity can launch one. The existing fireworks have the following defects: the existing fireworks can be detonated once when one firework is launched into the air, and the effects of sound, light and color are played once, so that the visual effect is too single, and the ornamental value is poor.

In order to improve the visual effect and the appreciation of the fireworks, the following methods are conventionally used: 1. and a plurality of different effect gunpowder are packaged in the inner barrel, so that different light and color effects are caused in the air. 2. The time interval of each emission is adjusted, so that the effect superposition of two successively emitted fireworks is realized in the air.

Disclosure of Invention

The invention aims to provide a firework aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to solve the problems of single visual effect and poor ornamental value of the existing fireworks.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a fireworks and firecrackers, includes the urceolus, the transmission chamber has been seted up to the urceolus, transmission chamber one end opening, the other end has the bottom surface, its characterized in that, every transmission intracavity is equipped with two at least inner tubes, inner tube upper end opening, lower extreme have the bottom and the bottom is equipped with the ignition hole, the lower extreme of inner tube still has grafting portion, and each inner tube is range upon range of in proper order, and the grafting portion of top inner tube pegs graft mutually with the upper end of below inner tube, can separate with the inner tube of below when the gunpowder in the inner tube below inner tube of top detonates the impulsive.

In the firework structure, at least two inner cylinders are arranged in each launching cavity of the outer cylinder, effect gunpowder is packaged in each inner cylinder, the inner cylinders are sequentially stacked in the launching cavity and are mutually inserted and positioned, namely, the inner cylinders are mutually connected in a normal state. When the device is used, the fire at the bottom of the outer cylinder is ignited, the gunpowder in the pressurization air chamber is ignited, the explosive force generated by the gunpowder acts on the bottom of the inner cylinder at the lowest part, the inner cylinder at the lowest part together with the inner cylinder at the upper part rapidly moves towards the opening end of the launching cavity and is launched into the air, and at the moment, the inner cylinders are still mutually connected together. After reaching the air, the fire fuse of the first inner cylinder at the lowest part is ignited, and the fire fuse ignites the effect explosive in the inner cylinder, so that the effects of sound, light, color and the like are generated in the air. Meanwhile, impact force generated in the detonation process of the effect explosive acts on the second inner cylinder which is inserted with the inner cylinder to separate the two inner cylinders, the inner cylinder and other inner cylinders are pushed to continuously fly in the air for a certain distance, meanwhile, the fire fuse of the second inner cylinder is also ignited, then the effect explosive in the inner cylinder is detonated, then the effects of sound, light, color and the like are generated in the air, the third inner cylinder is pushed, and the like, and the detonation distance between every two inner cylinders is about 1-10 meters. That is to say, every time this fireworks is launched, can bloom the effect that sends more in the air, bloom in different time, orbit position moreover, can also take place many times and explode the sound, very big improvement vision and the dual impact effect of sense of hearing, the sight is better.

In the fireworks, the traditional paperboard fixing mode can be used between the inner barrel and the outer barrel, and the fireworks can also be fixed in a close-fitting mode. The same effect gunpowder can be packaged in different inner cylinders, and different effect gunpowder can also be packaged in different inner cylinders and can be selected according to requirements.

In the fireworks and firecrackers, the bottom of the upper inner cylinder in every two adjacent inner cylinders protrudes downwards to form the insertion part, the ignition hole is formed in the insertion part, and the insertion part of the upper inner cylinder is inserted into the upper end opening of the lower inner cylinder and is tightly matched with the inner wall of the lower inner cylinder. The arrangement of the insertion part can control the insertion amount between two adjacent inner cylinders, and excessive insertion or incomplete insertion is avoided. The effect through grafting each other and tight fit realization location between each inner tube through grafting portion, the effect of the inertial force of cooperation simultaneously, thereby can guarantee that each inner tube can not break away from each other by the transmission toward aerial in-process, can link together, the ignition of the inner tube that is located the below is lighted, the effect gunpowder in this inner tube is detonated to the ignition, the insertion force of tight fit can be overcome to the impact force of detonating the production, make the inner tube of top can continue to fly a section distance in the air, analogize in proper order, can realize the interval and detonate, thereby bloom the effect of sending out frequently in the air, the dual impact effect of vision and sense of hearing has been improved, the sight is better. And foretell setting for preparation and installation are all comparatively convenient. As a conventional alternative, the lowermost inner cylinder may or may not be provided with a plug part.

As a replacement scheme, in the fireworks and firecrackers, in every two adjacent inner cylinders, the bottom of the upper inner cylinder protrudes downwards to form the insertion part, the ignition hole is formed in the insertion part, the peripheral wall of the insertion part is provided with a plurality of clamping convex strips protruding outwards, the clamping convex strips are distributed along the circumferential direction of the insertion part, and the insertion part of the upper inner cylinder is inserted into the upper end opening of the lower inner cylinder and is clamped and positioned with the inner wall of the lower inner cylinder through the clamping convex strips. The arrangement of the insertion part can control the insertion amount between two adjacent inner cylinders, and excessive insertion or incomplete insertion is avoided. Have a plurality of joint sand grips along circumference in the grafting portion, the joint sand grip extends along the axial, fix a position through joint sand grip chucking between each inner tube, the effect of cooperation inertia force simultaneously, thereby can guarantee that each inner tube can not break away from each other toward aerial in-process by the transmission, can link together, the fire of the inner tube that lies in the below draws and is lighted, the fire draws the effect powder of detonating in this inner tube, the chucking power of joint sand grip can be overcome to the impact force that detonating the production, make the inner tube of top can continue one section distance of flight in the air, analogize in proper order, can realize the interval and explode, thereby blooming the effect of sending out aloft, the dual impact effect of vision and sense of hearing has been improved, the sight is better. The design of joint sand grip for direct tight fit, it is lower to the size precision requirement of the periphery wall of inner tube and internal perisporium, it is more convenient to make. And during the installation, because the setting of joint sand grip for have slight gap between the outer wall of grafting portion and the internal perisporium of inner tube, the gaseous of inside can be followed foretell clearance and discharged, can not produce atmospheric pressure thrust, realization grafting that can be very convenient. As a conventional alternative, the lowermost inner cylinder may or may not be provided with a plug part.

As a replacement scheme, in the fireworks and firecrackers, the bottom of the upper inner cylinder in every two adjacent inner cylinders protrudes downwards to form the insertion part, the ignition hole is formed in the insertion part, the inner peripheral wall of the upper end of the lower inner cylinder is provided with a plurality of clamping convex strips protruding inwards, and the insertion part of the upper inner cylinder is inserted into the upper end opening of the lower inner cylinder and is abutted against the clamping convex strips for positioning. The arrangement of the insertion part can control the insertion amount between two adjacent inner cylinders, and excessive insertion or incomplete insertion is avoided. Be equipped with a plurality of joint sand grips along circumference on the internal perisporium of inner tube, the joint sand grip extends along the axial, fix a position through joint sand grip chucking between each inner tube, the effect of cooperation inertia force simultaneously, thereby can guarantee that each inner tube can not break away from each other toward aerial in-process by the transmission, can link together, the ignition of the inner tube that lies in the below is lighted, the ignition ignites the effect gunpowder in this inner tube, the chucking power of joint sand grip can be overcome to the impact force that explodes the production, make the inner tube of top can continue one section distance of flight in the air, analogize in proper order, can realize the interval and explode, thereby bloom the effect of sending out doubly aloft, the dual impact effect of vision and sense of hearing has been improved, the sight. The design of joint sand grip for direct tight fit, to the size precision requirement of the periphery wall of inner tube and internal perisporium, it is more convenient to make. And during the installation, because the setting of joint sand grip for have slight gap between the outer wall of grafting portion and the internal perisporium of inner tube, the gaseous of inside can be followed foretell clearance and discharged, can not produce atmospheric pressure thrust, realization grafting that can be very convenient. As a conventional replacement, the inner barrel positioned at the lowest part can be provided with a plugging part or not, and the inner barrel positioned at the uppermost part can be provided with a clamping convex strip or not.

As a replacement scheme, in the fireworks and firecrackers described above, in every two adjacent inner cylinders, the bottom of the upper inner cylinder protrudes downwards to form the above-mentioned insertion part, the ignition hole is opened on the insertion part, a plurality of clamping convex strips protruding outwards are arranged on the peripheral wall of the insertion part, the plurality of clamping convex strips are distributed along the circumferential direction of the insertion part, a plurality of clamping grooves are arranged on the inner peripheral wall of the upper end of the lower inner cylinder, and the insertion part of the upper inner cylinder is inserted into the upper end opening of the lower inner cylinder and clamped with the convex strips in the corresponding clamping grooves. Through the mutual tight fit in joint sand grip and joint groove, can realize the grafting location between each inner tube, the effect of cooperation inertia power simultaneously, thereby can guarantee that each inner tube can not break away from each other by the in-process of launching toward the air, can link together, the ignition at the inner tube that lies in the below is lighted, the effect gunpowder in this inner tube is detonated to the ignition, the clamping force of joint sand grip can be overcome to the impact force that the detonation produced, make the inner tube of top can continue to fly a section distance in the air, analogize in proper order, can realize the interval and detonate, thereby bloom in the air and send out multiple effect, the dual impact effect of vision and sense of hearing has been improved, the sight is better.

Alternatively, in the fireworks, the bottom of the upper inner cylinder in every two adjacent inner cylinders protrudes downwards to form the insertion part, the ignition hole is formed in the insertion part, the insertion part of the upper inner cylinder is inserted into the upper end opening of the lower inner cylinder, and the two inner cylinders are bonded through glue. The back accessible is glued in clearance between them and is bonded the location through grafting of grafting portion between each inner tube, the effect of cooperation inertial force simultaneously, thereby can guarantee that each inner tube can not break away from each other by the in-process of launching toward the air, can link together, the ignition of the inner tube that lies in the below is lighted, the effect gunpowder in this inner tube is exploded to the ignition, the power of bonding of glue can be overcome to the impact force that explodes the production, make the inner tube of top can continue to fly a section distance in the air, analogize in proper order, can realize the interval and explode, thereby bloom the effect of sending out frequently in the air, the dual impact effect of vision and sense of hearing has been improved, the sight is better.

Preferably, in the fireworks and firecrackers, the bottom surface of the upper inner cylinder of every two adjacent inner cylinders is abutted against the opening edge of the upper end of the lower inner cylinder, and the upper inner cylinder and the lower inner cylinder are bonded through glue. Also bond through the rubber coating between the bottom surface of top inner tube and the top of below inner tube, thereby can further guarantee the grafting stability between the two adjacent inner tubes, the effect of cooperation inertia power simultaneously, can guarantee that each inner tube can not break away from each other toward aerial in-process by the transmission, can link together, the fire of the inner tube that lies in the below draws to be lighted, the effect gunpowder in this inner tube is drawn to the fire, the bonding power of glue can be overcome to the impact force that explodes the production, make the inner tube of top can continue one section distance of flight in the air, analogize in proper order, can realize the interval and explode, thereby blooming out the effect of sending forth frequently in the air, the dual impact effect of vision and sense of hearing has been improved, the sight is better.

Preferably, in the above fireworks and firecrackers, the protruding height of the clamping convex strip is 0.05-0.1 mm. The height of the clamping convex strips is designed to be the best in the range, so that a good clamping positioning effect can be guaranteed, meanwhile, the required air tightness can be guaranteed between the clamping convex strips and the inner cylinder, the air pressure generated after the effect gunpowder is detonated can push the other inner cylinder which is spliced with the effect gunpowder to be pushed outwards to continue to slide for a certain distance and then detonate, the effect of multiple eruptions in the air is achieved, the visual and auditory dual impact effects are improved, and the ornamental performance is better.

Alternatively, in the fireworks and firecrackers, in every two adjacent inner cylinders, the lower end of the upper inner cylinder is provided with an annular retaining edge which protrudes downwards from the bottom of the inner cylinder, the annular retaining edge forms the inserting part, the outer peripheral wall of the upper end of the lower inner cylinder is provided with an annular concave shoulder which is formed by inwards sinking, and the annular concave shoulder of the upper end of the lower inner cylinder is inserted into the annular retaining edge of the upper inner cylinder and is tightly matched with the annular retaining edge.

In the fireworks and firecrackers, in every two adjacent inner cylinders, an isolation gasket is arranged in the lower inner cylinder, the isolation gasket is positioned between the bottom of the upper inner cylinder and the effect gunpowder filled in the lower inner cylinder, and the isolation gasket is further provided with fire passing holes. The setting of isolation gasket can play a role in separating, can prevent that the heating power and the impact force that produce after the effect gunpowder in the inner tube of below is lighted from directly acting on the inner tube of top, directly also explode the inner tube of top, further guarantee that the inner tube of top can continue to be detonated after the distance of control slides one end under the effect of impact force to bloom the effect of giving out more frequently in the air, improved the dual impact effect of vision and sense of hearing, the sight is better. The fire passing hole can be used for the fire of the upper inner cylinder to pass through. Preferably, the insulating spacer is made of plastic or paper material, and is made of cardboard or plastic sheet.

Preferably, in the above-described firework, the outer peripheral surfaces of the inner cylinders are flush with each other. The outer peripheral surfaces of the inner cylinders are flush, so that the phenomenon that in the launching and lifting process, the impact force generated by detonation of gunpowder in the outer cylinder pressurizing chamber acts on other inner cylinders to cause the inner cylinders to separate and fall off from each other is avoided, the effect of multiple explosion in the air is ensured, the double impact effect of vision and hearing is improved, and the ornamental performance is better.

Compared with the prior art, the firework has the following advantages:

1. every launching intracavity of urceolus is equipped with two at least inner tubes, and each inner tube location of pegging graft each other, and every launching fireworks can bloom in the air the effect that sends frequently, blooms in time, the orbit position of difference moreover, can also take place a lot of simultaneously and lead to the sound of exploding, very big improvement the dual impact effect of vision and sense of hearing, the sight is better.

2. The isolation gasket can play a role of isolating, prevent the heating power and impact force generated after the effect gunpowder in the lower inner cylinder is ignited from directly acting on the upper inner cylinder, directly explode the upper inner cylinder, and further ensure that the upper inner cylinder can be continuously detonated after controlling the distance of one sliding end under the action of the impact force, thereby having the effect of frequently bursting in the air.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic cross-sectional view illustrating the inner cylinders of the second embodiment of the present invention after being inserted into each other.

Fig. 4 is an enlarged view at B in fig. 3.

Fig. 5 is a schematic structural diagram of an inner cylinder having a plugging portion according to a second embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view illustrating a structure of the third embodiment of the present invention after the inner cylinders are inserted into each other.

Fig. 7 is an enlarged view at C in fig. 6.

Fig. 8 is a schematic structural view of an inner cylinder having a snap groove in the third embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view illustrating a structure of the fourth embodiment of the present invention after the inner cylinders are inserted into each other.

Fig. 10 is an enlarged view at D in fig. 9.

Fig. 11 is a schematic cross-sectional view illustrating the inner cylinders of the seventh embodiment of the present invention after being inserted into each other.

In the figure, 1, an outer cylinder; 1a, a transmitting cavity; 2. an inner barrel; 2a, a plug part; 2b, a clamping groove; 3. an isolation gasket; 3a, fire passing holes; 4. and (4) clamping the convex strips.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and 2, the fireworks and firecrackers, including urceolus 1 and inner tube 2, transmission chamber 1a has been seted up to urceolus 1, transmission chamber 1a one end opening, the other end has the bottom surface, be equipped with two at least inner tubes 2 in every transmission chamber 1a, the one end opening of inner tube 2, the other end has the bottom and the bottom has ignition hole 2c to reduce the use of high-quality earth, earth splashes everywhere when avoiding the fireworks and firecrackers to explode simultaneously, influences the environment, all packaged with the effect gunpowder in every inner tube 2. The inner cylinders 2 are sequentially stacked in the emission chamber 1 a.

Specifically speaking, in every two adjacent inner tubes 2, the bottom of upper inner tube 2 has downwards convex grafting portion 2a, thereby make this inner tube 2 wholly be the type of falling a convex, offer the ignition hole 2c that is used for filling the ignition charge or is used for wearing to establish the ignition line on grafting portion 2a, ignition hole 2c and the inner chamber intercommunication of this inner tube 2, the grafting portion 2a of upper inner tube 2 inserts in the upper end opening of lower inner tube 2 and with the inner wall tight fit of lower inner tube 2, that inner tube 2 that is located the below can set up grafting portion 2a, also can not set up grafting portion 2a, all in the protection scope of this application. In this embodiment, two inner cylinders 2 are disposed in each launching cavity 1a, a space is provided between the bottom of the lowermost inner cylinder 2 and the bottom end face of the inner cylinder 2, the bottom of the inner cylinder 2 is further provided with a downward protruding annular convex edge, a fire guiding cavity for filling priming powder is formed between the annular convex edge and the bottom, and the fire guiding cavity is communicated with the inner cavity of the inner cylinder 2 through a bottom ignition hole 2 c.

The peripheral surfaces of the inner cylinders 2 are flush, and the outer walls of the two inner cylinders 2 are tightly clamped with the inner wall in the emission cavity 1 a. A pressurizing air chamber is formed between the bottom of the inner barrel 2 positioned at the lower part and the hole wall and the bottom of the launching cavity 1a, and the pressurizing air chamber is filled with gunpowder for launching the inner barrel 2.

In every two adjacent inner cylinders 2, an isolation gasket 3 is arranged in the lower inner cylinder 2, the isolation gasket 3 is positioned between the insertion part 2a of the upper inner cylinder 2 and the effect gunpowder filled in the lower inner cylinder 2, and can play a role of isolating, so that the heating power and the impact force generated after the effect gunpowder in the lower inner cylinder 2 is ignited can be prevented from directly acting on the upper inner cylinder 2, and the upper inner cylinder 2 is also directly exploded. The isolation gasket 3 is also provided with fire passing holes 3a, and the fire passing holes 3a can be used for fire of the upper inner barrel 2 to pass through or priming powder is filled in the fire passing holes 3 a. The isolation pad 3 is made of plastic or paper material, and is made of cardboard or plastic sheet.

When the fireworks and firecrackers are used, the fire at the bottom of the outer cylinder 1 is ignited, the gunpowder in the pressurizing air chamber of the launching cavity 1a is ignited, the explosive force generated by the gunpowder acts on the bottom of the inner cylinder 2 at the lowest part, the inner cylinder 2 at the lowest part together with the inner cylinder 2 at the upper part rapidly moves towards the opening end of the launching cavity 1a and is launched into the air, and at the moment, the inner cylinders 2 are mutually connected. When the fire reaches the air, the fire of the first inner cylinder 2 at the lowest part is ignited, and the fire ignites the effect explosive in the inner cylinder 2, so that the effects of sound, light, color and the like are generated in the air. Meanwhile, impact force generated in the detonation process of the effect gunpowder acts on the second inner cylinder 2 which is inserted with the inner cylinder to overcome tight fit force to separate the two, the inner cylinder 2 and other inner cylinders 2 are pushed to continuously fly for a certain distance in the air, meanwhile, the fire fuse of the second inner cylinder 2 is also ignited, then the effect gunpowder in the inner cylinder 2 is detonated, then the effects of sound, light, color and the like are generated in the air, then the third inner cylinder is pushed, and the like, and the detonation distance between every two inner cylinders 2 is about 1-10 meters. That is to say, every time this fireworks is launched, can bloom the effect of two in the air, bloom in different time, orbit position moreover, can also take place many times and explode the sound simultaneously, very big improvement vision and the dual impact effect of sense of hearing, the sight is better.

Example two

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: as shown in fig. 3-5, in every two adjacent inner cylinders 2, the bottom of the upper inner cylinder 2 protrudes downward to form an insertion portion 2a, a plurality of clamping convex strips 4 protruding outward are arranged on the outer peripheral wall of the insertion portion 2a, the plurality of clamping convex strips 4 are distributed along the circumferential direction of the insertion portion 2a, the clamping convex strips 4 extend axially, and the insertion portion 2a of the upper inner cylinder 2 is inserted into the upper end opening of the lower inner cylinder 2 and is clamped and positioned with the inner wall of the lower inner cylinder 2 through the clamping convex strips 4. For direct tight fit, it is more convenient to make to the dimensional accuracy requirement of the periphery wall of inner tube 2 and internal perisporium. And during the installation, because the setting of joint sand grip 4 for have slight gap between the outer wall of grafting portion 2a and the internal perisporium of inner tube 2, inside gas can be followed foretell clearance and discharged, can not produce atmospheric pressure thrust, realization grafting that can be very convenient. In this embodiment, the protruding height of the clamping convex strip 4 is 0.05-0.1 mm.

EXAMPLE III

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: as shown in fig. 6 to 8, in every two adjacent inner cylinders 2, the bottom of the upper inner cylinder 2 protrudes downward to form an insertion portion 2a, a plurality of clamping convex strips 4 protruding outward are arranged on the outer peripheral wall of the insertion portion 2a, the plurality of clamping convex strips 4 are distributed along the circumferential direction of the insertion portion 2a, and the clamping convex strips 4 extend along the axial direction. The inner peripheral wall of the inner barrel 2 positioned below is provided with a plurality of clamping grooves 2b, the clamping grooves 2b correspond to the clamping convex strips 4, and the insertion part 2a of the upper inner barrel 2 is inserted into the upper end opening of the lower inner barrel 2 and the clamping convex strips 4 are clamped in the corresponding clamping grooves 2 b. In this embodiment, the protruding height of the clamping convex strip 4 is 0.05-0.1 mm.

Example four

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: as shown in fig. 9-10, in every two adjacent inner cylinders 2, the bottom of the upper inner cylinder 2 protrudes downward to form an insertion portion 2a, the inner peripheral wall of the lower inner cylinder 2 has a plurality of clamping convex strips 4 protruding inward, the plurality of clamping convex strips 4 are distributed along the circumferential direction and extend along the axial direction, and the insertion portion 2a of the upper inner cylinder 2 is inserted into the upper end opening of the lower inner cylinder 2 and abuts against the clamping convex strips 4 for positioning. For direct tight fit, it is more convenient to make to the dimensional accuracy requirement of the periphery wall of inner tube 2 and internal perisporium. And during the installation, because the setting of joint sand grip 4 for have slight gap between the outer wall of grafting portion 2a and the internal perisporium of inner tube 2, inside gas can be followed foretell clearance and discharged, can not produce atmospheric pressure thrust, realization grafting that can be very convenient. In this embodiment, the protruding height of the clamping convex strip 4 is 0.05-0.1 mm.

EXAMPLE five

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: in every two adjacent inner tubes 2, the bottom that is located the inner tube 2 of top protrudes downwards and forms grafting portion 2a, the grafting portion 2a of top inner tube 2 inserts in the upper end opening of below inner tube 2 and bonds through glue between the two, thereby can guarantee that each inner tube 2 is launched towards aerial in-process and can not break away from each other, can link together, can cooperate subsequent effect gunpowder detonating force to realize the separation interval and detonate, thereby bloom out the effect of many in the air, the dual impact effect of vision and sense of hearing has been improved, the sight is better.

EXAMPLE six

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: in every two adjacent inner tubes 2, the bottom surface of top inner tube 2 supports and leans on top opening border department at below inner tube 2 and bonds through glue between the two, thereby can further guarantee the grafting stability between two adjacent inner tubes 2, guarantee that each inner tube 2 is launched towards aerial in-process and can not break away from each other, can link together, can cooperate subsequent effect gunpowder detonation force to realize the separation interval and detonate, thereby blooming out the effect of sending out in the air, the dual impact effect of vision and sense of hearing has been improved, the sight is better.

EXAMPLE seven

The structure and features of this embodiment are substantially the same as those of the first embodiment, and the differences are as follows: as shown in fig. 11, in every two adjacent inner cylinders 2, the lower end of the upper inner cylinder 2 is provided with an annular blocking edge protruding downwards from the bottom of the inner cylinder 2, the annular blocking edge forms an insertion part 2a, the outer peripheral wall of the upper end of the lower inner cylinder 2 is provided with an annular concave shoulder formed by inwards sinking, and the annular concave shoulder of the upper end of the lower inner cylinder 2 is inserted into the annular blocking edge of the upper inner cylinder 2 and is tightly matched with the annular blocking edge.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms outer barrel 1, launching cavity 1a, inner barrel 2, spigot 2a, snap groove 2b, insulating gasket 3, fire passing hole 3a, snap bead 4, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.